diff options
Diffstat (limited to 'vendor/backtrace/src')
36 files changed, 0 insertions, 7827 deletions
diff --git a/vendor/backtrace/src/backtrace/libunwind.rs b/vendor/backtrace/src/backtrace/libunwind.rs deleted file mode 100644 index 0564f2ea..00000000 --- a/vendor/backtrace/src/backtrace/libunwind.rs +++ /dev/null @@ -1,301 +0,0 @@ -//! Backtrace support using libunwind/gcc_s/etc APIs. -//! -//! This module contains the ability to unwind the stack using libunwind-style -//! APIs. Note that there's a whole bunch of implementations of the -//! libunwind-like API, and this is just trying to be compatible with most of -//! them all at once instead of being picky. -//! -//! The libunwind API is powered by `_Unwind_Backtrace` and is in practice very -//! reliable at generating a backtrace. It's not entirely clear how it does it -//! (frame pointers? eh_frame info? both?) but it seems to work! -//! -//! Most of the complexity of this module is handling the various platform -//! differences across libunwind implementations. Otherwise this is a pretty -//! straightforward Rust binding to the libunwind APIs. -//! -//! This is the default unwinding API for all non-Windows platforms currently. - -use core::ffi::c_void; -use core::ptr::addr_of_mut; - -pub enum Frame { - Raw(*mut uw::_Unwind_Context), - Cloned { - ip: *mut c_void, - sp: *mut c_void, - symbol_address: *mut c_void, - }, -} - -// With a raw libunwind pointer it should only ever be access in a readonly -// threadsafe fashion, so it's `Sync`. When sending to other threads via `Clone` -// we always switch to a version which doesn't retain interior pointers, so we -// should be `Send` as well. -unsafe impl Send for Frame {} -unsafe impl Sync for Frame {} - -impl Frame { - pub fn ip(&self) -> *mut c_void { - let ctx = match *self { - Frame::Raw(ctx) => ctx, - Frame::Cloned { ip, .. } => return ip, - }; - #[allow(unused_mut)] - let mut ip = unsafe { uw::_Unwind_GetIP(ctx) as *mut c_void }; - - // To reduce TCB size in SGX enclaves, we do not want to implement - // symbol resolution functionality. Rather, we can print the offset of - // the address here, which could be later mapped to correct function. - #[cfg(all(target_env = "sgx", target_vendor = "fortanix"))] - { - let image_base = super::sgx_image_base::get_image_base(); - ip = usize::wrapping_sub(ip as usize, image_base as _) as _; - } - ip - } - - pub fn sp(&self) -> *mut c_void { - match *self { - Frame::Raw(ctx) => unsafe { uw::get_sp(ctx) as *mut c_void }, - Frame::Cloned { sp, .. } => sp, - } - } - - pub fn symbol_address(&self) -> *mut c_void { - if let Frame::Cloned { symbol_address, .. } = *self { - return symbol_address; - } - - // The macOS linker emits a "compact" unwind table that only includes an - // entry for a function if that function either has an LSDA or its - // encoding differs from that of the previous entry. Consequently, on - // macOS, `_Unwind_FindEnclosingFunction` is unreliable (it can return a - // pointer to some totally unrelated function). Instead, we just always - // return the ip. - // - // https://github.com/rust-lang/rust/issues/74771#issuecomment-664056788 - // - // Note the `skip_inner_frames.rs` test is skipped on macOS due to this - // clause, and if this is fixed that test in theory can be run on macOS! - if cfg!(target_vendor = "apple") { - self.ip() - } else { - unsafe { uw::_Unwind_FindEnclosingFunction(self.ip()) } - } - } - - pub fn module_base_address(&self) -> Option<*mut c_void> { - None - } -} - -impl Clone for Frame { - fn clone(&self) -> Frame { - Frame::Cloned { - ip: self.ip(), - sp: self.sp(), - symbol_address: self.symbol_address(), - } - } -} - -struct Bomb { - enabled: bool, -} - -impl Drop for Bomb { - fn drop(&mut self) { - if self.enabled { - panic!("cannot panic during the backtrace function"); - } - } -} - -#[inline(always)] -pub unsafe fn trace(mut cb: &mut dyn FnMut(&super::Frame) -> bool) { - unsafe { - uw::_Unwind_Backtrace(trace_fn, addr_of_mut!(cb).cast()); - } - - extern "C" fn trace_fn( - ctx: *mut uw::_Unwind_Context, - arg: *mut c_void, - ) -> uw::_Unwind_Reason_Code { - let cb = unsafe { &mut *arg.cast::<&mut dyn FnMut(&super::Frame) -> bool>() }; - let cx = super::Frame { - inner: Frame::Raw(ctx), - }; - - let mut bomb = Bomb { enabled: true }; - let keep_going = cb(&cx); - bomb.enabled = false; - - if keep_going { - uw::_URC_NO_REASON - } else { - uw::_URC_FAILURE - } - } -} - -/// Unwind library interface used for backtraces -/// -/// Note that dead code is allowed as here are just bindings -/// iOS doesn't use all of them it but adding more -/// platform-specific configs pollutes the code too much -#[allow(non_camel_case_types)] -#[allow(non_snake_case)] -#[allow(dead_code)] -mod uw { - pub use self::_Unwind_Reason_Code::*; - - use core::ffi::c_void; - - #[repr(C)] - pub enum _Unwind_Reason_Code { - _URC_NO_REASON = 0, - _URC_FOREIGN_EXCEPTION_CAUGHT = 1, - _URC_FATAL_PHASE2_ERROR = 2, - _URC_FATAL_PHASE1_ERROR = 3, - _URC_NORMAL_STOP = 4, - _URC_END_OF_STACK = 5, - _URC_HANDLER_FOUND = 6, - _URC_INSTALL_CONTEXT = 7, - _URC_CONTINUE_UNWIND = 8, - _URC_FAILURE = 9, // used only by ARM EABI - } - - pub enum _Unwind_Context {} - - pub type _Unwind_Trace_Fn = - extern "C" fn(ctx: *mut _Unwind_Context, arg: *mut c_void) -> _Unwind_Reason_Code; - - unsafe extern "C" { - pub fn _Unwind_Backtrace( - trace: _Unwind_Trace_Fn, - trace_argument: *mut c_void, - ) -> _Unwind_Reason_Code; - } - - cfg_if::cfg_if! { - // available since GCC 4.2.0, should be fine for our purpose - if #[cfg(all( - not(all(target_os = "android", target_arch = "arm")), - not(all(target_os = "freebsd", target_arch = "arm")), - not(all(target_os = "linux", target_arch = "arm")), - not(all(target_os = "horizon", target_arch = "arm")), - not(all(target_os = "rtems", target_arch = "arm")), - not(all(target_os = "vita", target_arch = "arm")), - not(all(target_os = "nuttx", target_arch = "arm")), - ))] { - unsafe extern "C" { - pub fn _Unwind_GetIP(ctx: *mut _Unwind_Context) -> libc::uintptr_t; - pub fn _Unwind_FindEnclosingFunction(pc: *mut c_void) -> *mut c_void; - - #[cfg(not(all(target_os = "linux", target_arch = "s390x")))] - // This function is a misnomer: rather than getting this frame's - // Canonical Frame Address (aka the caller frame's SP) it - // returns this frame's SP. - // - // https://github.com/libunwind/libunwind/blob/d32956507cf29d9b1a98a8bce53c78623908f4fe/src/unwind/GetCFA.c#L28-L35 - #[link_name = "_Unwind_GetCFA"] - pub fn get_sp(ctx: *mut _Unwind_Context) -> libc::uintptr_t; - - } - - // s390x uses a biased CFA value, therefore we need to use - // _Unwind_GetGR to get the stack pointer register (%r15) - // instead of relying on _Unwind_GetCFA. - #[cfg(all(target_os = "linux", target_arch = "s390x"))] - pub unsafe fn get_sp(ctx: *mut _Unwind_Context) -> libc::uintptr_t { - unsafe extern "C" { - pub fn _Unwind_GetGR(ctx: *mut _Unwind_Context, index: libc::c_int) -> libc::uintptr_t; - } - unsafe { _Unwind_GetGR(ctx, 15) } - } - } else { - use core::ptr::addr_of_mut; - - // On android and arm, the function `_Unwind_GetIP` and a bunch of - // others are macros, so we define functions containing the - // expansion of the macros. - // - // TODO: link to the header file that defines these macros, if you - // can find it. (I, fitzgen, cannot find the header file that some - // of these macro expansions were originally borrowed from.) - #[repr(C)] - enum _Unwind_VRS_Result { - _UVRSR_OK = 0, - _UVRSR_NOT_IMPLEMENTED = 1, - _UVRSR_FAILED = 2, - } - #[repr(C)] - enum _Unwind_VRS_RegClass { - _UVRSC_CORE = 0, - _UVRSC_VFP = 1, - _UVRSC_FPA = 2, - _UVRSC_WMMXD = 3, - _UVRSC_WMMXC = 4, - } - #[repr(C)] - enum _Unwind_VRS_DataRepresentation { - _UVRSD_UINT32 = 0, - _UVRSD_VFPX = 1, - _UVRSD_FPAX = 2, - _UVRSD_UINT64 = 3, - _UVRSD_FLOAT = 4, - _UVRSD_DOUBLE = 5, - } - - type _Unwind_Word = libc::c_uint; - unsafe extern "C" { - fn _Unwind_VRS_Get( - ctx: *mut _Unwind_Context, - klass: _Unwind_VRS_RegClass, - word: _Unwind_Word, - repr: _Unwind_VRS_DataRepresentation, - data: *mut c_void, - ) -> _Unwind_VRS_Result; - } - - pub unsafe fn _Unwind_GetIP(ctx: *mut _Unwind_Context) -> libc::uintptr_t { - let mut val: _Unwind_Word = 0; - let ptr = addr_of_mut!(val); - unsafe { - let _ = _Unwind_VRS_Get( - ctx, - _Unwind_VRS_RegClass::_UVRSC_CORE, - 15, - _Unwind_VRS_DataRepresentation::_UVRSD_UINT32, - ptr.cast::<c_void>(), - ); - } - (val & !1) as libc::uintptr_t - } - - // R13 is the stack pointer on arm. - const SP: _Unwind_Word = 13; - - pub unsafe fn get_sp(ctx: *mut _Unwind_Context) -> libc::uintptr_t { - let mut val: _Unwind_Word = 0; - let ptr = addr_of_mut!(val); - unsafe { - let _ = _Unwind_VRS_Get( - ctx, - _Unwind_VRS_RegClass::_UVRSC_CORE, - SP, - _Unwind_VRS_DataRepresentation::_UVRSD_UINT32, - ptr.cast::<c_void>(), - ); - } - val as libc::uintptr_t - } - - // This function also doesn't exist on Android or ARM/Linux, so make it - // a no-op. - pub unsafe fn _Unwind_FindEnclosingFunction(pc: *mut c_void) -> *mut c_void { - pc - } - } - } -} diff --git a/vendor/backtrace/src/backtrace/miri.rs b/vendor/backtrace/src/backtrace/miri.rs deleted file mode 100644 index 2c36be42..00000000 --- a/vendor/backtrace/src/backtrace/miri.rs +++ /dev/null @@ -1,119 +0,0 @@ -use alloc::boxed::Box; -use alloc::vec::Vec; -use core::ffi::c_void; - -unsafe extern "Rust" { - fn miri_backtrace_size(flags: u64) -> usize; - fn miri_get_backtrace(flags: u64, buf: *mut *mut ()); - fn miri_resolve_frame(ptr: *mut (), flags: u64) -> MiriFrame; - fn miri_resolve_frame_names(ptr: *mut (), flags: u64, name_buf: *mut u8, filename_buf: *mut u8); -} - -#[repr(C)] -pub struct MiriFrame { - pub name_len: usize, - pub filename_len: usize, - pub lineno: u32, - pub colno: u32, - pub fn_ptr: *mut c_void, -} - -#[derive(Clone, Debug)] -pub struct FullMiriFrame { - pub name: Box<[u8]>, - pub filename: Box<[u8]>, - pub lineno: u32, - pub colno: u32, - pub fn_ptr: *mut c_void, -} - -#[derive(Debug, Clone)] -pub struct Frame { - pub addr: *mut c_void, - pub inner: FullMiriFrame, -} - -// SAFETY: Miri guarantees that the returned pointer -// can be used from any thread. -unsafe impl Send for Frame {} -unsafe impl Sync for Frame {} - -impl Frame { - pub fn ip(&self) -> *mut c_void { - self.addr - } - - pub fn sp(&self) -> *mut c_void { - core::ptr::null_mut() - } - - pub fn symbol_address(&self) -> *mut c_void { - self.inner.fn_ptr - } - - pub fn module_base_address(&self) -> Option<*mut c_void> { - None - } -} - -// SAFETY: This function is safe to call. It is only marked as `unsafe` to -// avoid having to allow `unused_unsafe` since other implementations are -// unsafe. -pub unsafe fn trace<F: FnMut(&super::Frame) -> bool>(cb: F) { - // SAFETY: Miri guarantees that the backtrace API functions - // can be called from any thread. - unsafe { trace_unsynchronized(cb) }; -} - -pub fn resolve_addr(ptr: *mut c_void) -> Frame { - // SAFETY: Miri will stop execution with an error if this pointer - // is invalid. - let frame = unsafe { miri_resolve_frame(ptr.cast::<()>(), 1) }; - - let mut name = Vec::with_capacity(frame.name_len); - let mut filename = Vec::with_capacity(frame.filename_len); - - // SAFETY: name and filename have been allocated with the amount - // of memory miri has asked for, and miri guarantees it will initialize it - unsafe { - miri_resolve_frame_names( - ptr.cast::<()>(), - 0, - name.as_mut_ptr(), - filename.as_mut_ptr(), - ); - - name.set_len(frame.name_len); - filename.set_len(frame.filename_len); - } - - Frame { - addr: ptr, - inner: FullMiriFrame { - name: name.into(), - filename: filename.into(), - lineno: frame.lineno, - colno: frame.colno, - fn_ptr: frame.fn_ptr, - }, - } -} - -unsafe fn trace_unsynchronized<F: FnMut(&super::Frame) -> bool>(mut cb: F) { - let len = unsafe { miri_backtrace_size(0) }; - - let mut frames = Vec::with_capacity(len); - - unsafe { - miri_get_backtrace(1, frames.as_mut_ptr()); - - frames.set_len(len); - } - - for ptr in frames.iter() { - let frame = resolve_addr((*ptr).cast::<c_void>()); - if !cb(&super::Frame { inner: frame }) { - return; - } - } -} diff --git a/vendor/backtrace/src/backtrace/mod.rs b/vendor/backtrace/src/backtrace/mod.rs deleted file mode 100644 index 2a36214b..00000000 --- a/vendor/backtrace/src/backtrace/mod.rs +++ /dev/null @@ -1,206 +0,0 @@ -use core::ffi::c_void; -use core::fmt; - -/// Inspects the current call-stack, passing all active frames into the closure -/// provided to calculate a stack trace. -/// -/// This function is the workhorse of this library in calculating the stack -/// traces for a program. The given closure `cb` is yielded instances of a -/// `Frame` which represent information about that call frame on the stack. The -/// closure is yielded frames in a top-down fashion (most recently called -/// functions first). -/// -/// The closure's return value is an indication of whether the backtrace should -/// continue. A return value of `false` will terminate the backtrace and return -/// immediately. -/// -/// Once a `Frame` is acquired you will likely want to call `backtrace::resolve` -/// to convert the `ip` (instruction pointer) or symbol address to a `Symbol` -/// through which the name and/or filename/line number can be learned. -/// -/// Note that this is a relatively low-level function and if you'd like to, for -/// example, capture a backtrace to be inspected later, then the `Backtrace` -/// type may be more appropriate. -/// -/// # Required features -/// -/// This function requires the `std` feature of the `backtrace` crate to be -/// enabled, and the `std` feature is enabled by default. -/// -/// # Panics -/// -/// This function strives to never panic, but if the `cb` provided panics then -/// some platforms will force a double panic to abort the process. Some -/// platforms use a C library which internally uses callbacks which cannot be -/// unwound through, so panicking from `cb` may trigger a process abort. -/// -/// # Example -/// -/// ``` -/// extern crate backtrace; -/// -/// fn main() { -/// backtrace::trace(|frame| { -/// // ... -/// -/// true // continue the backtrace -/// }); -/// } -/// ``` -#[cfg(feature = "std")] -pub fn trace<F: FnMut(&Frame) -> bool>(cb: F) { - let _guard = crate::lock::lock(); - unsafe { trace_unsynchronized(cb) } -} - -/// Same as `trace`, only unsafe as it's unsynchronized. -/// -/// This function does not have synchronization guarantees but is available -/// when the `std` feature of this crate isn't compiled in. See the `trace` -/// function for more documentation and examples. -/// -/// # Panics -/// -/// See information on `trace` for caveats on `cb` panicking. -pub unsafe fn trace_unsynchronized<F: FnMut(&Frame) -> bool>(mut cb: F) { - unsafe { trace_imp(&mut cb) } -} - -/// A trait representing one frame of a backtrace, yielded to the `trace` -/// function of this crate. -/// -/// The tracing function's closure will be yielded frames, and the frame is -/// virtually dispatched as the underlying implementation is not always known -/// until runtime. -#[derive(Clone)] -pub struct Frame { - pub(crate) inner: FrameImp, -} - -impl Frame { - /// Returns the current instruction pointer of this frame. - /// - /// This is normally the next instruction to execute in the frame, but not - /// all implementations list this with 100% accuracy (but it's generally - /// pretty close). - /// - /// It is recommended to pass this value to `backtrace::resolve` to turn it - /// into a symbol name. - pub fn ip(&self) -> *mut c_void { - self.inner.ip() - } - - /// Returns the current stack pointer of this frame. - /// - /// In the case that a backend cannot recover the stack pointer for this - /// frame, a null pointer is returned. - pub fn sp(&self) -> *mut c_void { - self.inner.sp() - } - - /// Returns the starting symbol address of the frame of this function. - /// - /// This will attempt to rewind the instruction pointer returned by `ip` to - /// the start of the function, returning that value. In some cases, however, - /// backends will just return `ip` from this function. - /// - /// The returned value can sometimes be used if `backtrace::resolve` failed - /// on the `ip` given above. - pub fn symbol_address(&self) -> *mut c_void { - self.inner.symbol_address() - } - - /// Returns the base address of the module to which the frame belongs. - pub fn module_base_address(&self) -> Option<*mut c_void> { - self.inner.module_base_address() - } -} - -impl fmt::Debug for Frame { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - f.debug_struct("Frame") - .field("ip", &self.ip()) - .field("symbol_address", &self.symbol_address()) - .finish() - } -} - -#[cfg(all(target_env = "sgx", target_vendor = "fortanix"))] -mod sgx_image_base { - - #[cfg(not(feature = "std"))] - pub(crate) mod imp { - use core::ffi::c_void; - use core::sync::atomic::{AtomicUsize, Ordering::SeqCst}; - - static IMAGE_BASE: AtomicUsize = AtomicUsize::new(0); - - /// Set the image base address. This is only available for Fortanix SGX - /// target when the `std` feature is not enabled. This can be used in the - /// standard library to set the correct base address. - #[doc(hidden)] - pub fn set_image_base(base_addr: *mut c_void) { - IMAGE_BASE.store(base_addr as _, SeqCst); - } - - pub(crate) fn get_image_base() -> *mut c_void { - IMAGE_BASE.load(SeqCst) as _ - } - } - - #[cfg(feature = "std")] - mod imp { - use core::ffi::c_void; - - pub(crate) fn get_image_base() -> *mut c_void { - std::os::fortanix_sgx::mem::image_base() as _ - } - } - - pub(crate) use imp::get_image_base; -} - -#[cfg(all(target_env = "sgx", target_vendor = "fortanix", not(feature = "std")))] -pub use sgx_image_base::imp::set_image_base; - -cfg_if::cfg_if! { - // This needs to come first, to ensure that - // Miri takes priority over the host platform - if #[cfg(miri)] { - pub(crate) mod miri; - use self::miri::trace as trace_imp; - pub(crate) use self::miri::Frame as FrameImp; - } else if #[cfg( - any( - all( - unix, - not(target_os = "emscripten"), - not(all(target_os = "ios", target_arch = "arm")), - ), - all( - target_env = "sgx", - target_vendor = "fortanix", - ), - ) - )] { - mod libunwind; - use self::libunwind::trace as trace_imp; - pub(crate) use self::libunwind::Frame as FrameImp; - } else if #[cfg(all(windows, not(target_vendor = "uwp")))] { - cfg_if::cfg_if! { - if #[cfg(any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "arm64ec"))] { - mod win64; - use self::win64::trace as trace_imp; - pub(crate) use self::win64::Frame as FrameImp; - } else if #[cfg(any(target_arch = "x86", target_arch = "arm"))] { - mod win32; - use self::win32::trace as trace_imp; - pub(crate) use self::win32::Frame as FrameImp; - } - } - } else { - mod noop; - use self::noop::trace as trace_imp; - pub(crate) use self::noop::Frame as FrameImp; - } -} diff --git a/vendor/backtrace/src/backtrace/noop.rs b/vendor/backtrace/src/backtrace/noop.rs deleted file mode 100644 index 98dbcfad..00000000 --- a/vendor/backtrace/src/backtrace/noop.rs +++ /dev/null @@ -1,32 +0,0 @@ -//! Empty implementation of unwinding used when no other implementation is -//! appropriate. - -use core::ffi::c_void; -use core::ptr::null_mut; - -// SAFETY: This function is safe to call. It is only marked as `unsafe` to -// avoid having to allow `unused_unsafe` since other implementations are -// unsafe. -#[inline(always)] -pub unsafe fn trace(_cb: &mut dyn FnMut(&super::Frame) -> bool) {} - -#[derive(Clone)] -pub struct Frame; - -impl Frame { - pub fn ip(&self) -> *mut c_void { - null_mut() - } - - pub fn sp(&self) -> *mut c_void { - null_mut() - } - - pub fn symbol_address(&self) -> *mut c_void { - null_mut() - } - - pub fn module_base_address(&self) -> Option<*mut c_void> { - None - } -} diff --git a/vendor/backtrace/src/backtrace/win32.rs b/vendor/backtrace/src/backtrace/win32.rs deleted file mode 100644 index 9c459306..00000000 --- a/vendor/backtrace/src/backtrace/win32.rs +++ /dev/null @@ -1,214 +0,0 @@ -//! Backtrace strategy for Windows platforms. -//! -//! This module contains the ability to generate a backtrace on Windows using one -//! of two possible methods. The `StackWalkEx` function is primarily used if -//! possible, but not all systems have that. Failing that the `StackWalk64` -//! function is used instead. Note that `StackWalkEx` is favored because it -//! handles debuginfo internally and returns inline frame information. -//! -//! Note that all dbghelp support is loaded dynamically, see `src/dbghelp.rs` -//! for more information about that. - -use super::super::{dbghelp, windows_sys::*}; -use core::ffi::c_void; -use core::mem; - -#[derive(Clone, Copy)] -pub enum StackFrame { - New(STACKFRAME_EX), - Old(STACKFRAME64), -} - -#[derive(Clone, Copy)] -pub struct Frame { - pub(crate) stack_frame: StackFrame, - base_address: *mut c_void, -} - -// we're just sending around raw pointers and reading them, never interpreting -// them so this should be safe to both send and share across threads. -unsafe impl Send for Frame {} -unsafe impl Sync for Frame {} - -impl Frame { - pub fn ip(&self) -> *mut c_void { - self.addr_pc().Offset as *mut _ - } - - pub fn sp(&self) -> *mut c_void { - self.addr_stack().Offset as *mut _ - } - - pub fn symbol_address(&self) -> *mut c_void { - self.ip() - } - - pub fn module_base_address(&self) -> Option<*mut c_void> { - Some(self.base_address) - } - - #[cfg(not(target_env = "gnu"))] - pub fn inline_context(&self) -> Option<u32> { - match self.stack_frame { - StackFrame::New(ref new) => Some(new.InlineFrameContext), - StackFrame::Old(_) => None, - } - } - - fn addr_pc(&self) -> &ADDRESS64 { - match self.stack_frame { - StackFrame::New(ref new) => &new.AddrPC, - StackFrame::Old(ref old) => &old.AddrPC, - } - } - - fn addr_pc_mut(&mut self) -> &mut ADDRESS64 { - match self.stack_frame { - StackFrame::New(ref mut new) => &mut new.AddrPC, - StackFrame::Old(ref mut old) => &mut old.AddrPC, - } - } - - fn addr_frame_mut(&mut self) -> &mut ADDRESS64 { - match self.stack_frame { - StackFrame::New(ref mut new) => &mut new.AddrFrame, - StackFrame::Old(ref mut old) => &mut old.AddrFrame, - } - } - - fn addr_stack(&self) -> &ADDRESS64 { - match self.stack_frame { - StackFrame::New(ref new) => &new.AddrStack, - StackFrame::Old(ref old) => &old.AddrStack, - } - } - - fn addr_stack_mut(&mut self) -> &mut ADDRESS64 { - match self.stack_frame { - StackFrame::New(ref mut new) => &mut new.AddrStack, - StackFrame::Old(ref mut old) => &mut old.AddrStack, - } - } -} - -#[repr(C, align(16))] // required by `CONTEXT`, is a FIXME in windows metadata right now -struct MyContext(CONTEXT); - -#[inline(always)] -pub unsafe fn trace(cb: &mut dyn FnMut(&super::Frame) -> bool) { - // Allocate necessary structures for doing the stack walk - let process = GetCurrentProcess(); - let thread = GetCurrentThread(); - - let mut context = mem::zeroed::<MyContext>(); - RtlCaptureContext(&mut context.0); - - // Ensure this process's symbols are initialized - let dbghelp = match dbghelp::init() { - Ok(dbghelp) => dbghelp, - Err(()) => return, // oh well... - }; - - let function_table_access = dbghelp.SymFunctionTableAccess64(); - let get_module_base = dbghelp.SymGetModuleBase64(); - - let process_handle = GetCurrentProcess(); - - // Attempt to use `StackWalkEx` if we can, but fall back to `StackWalk64` - // since it's in theory supported on more systems. - match (*dbghelp.dbghelp()).StackWalkEx() { - #[allow(non_snake_case)] - Some(StackWalkEx) => { - let mut inner: STACKFRAME_EX = mem::zeroed(); - inner.StackFrameSize = mem::size_of::<STACKFRAME_EX>() as u32; - let mut frame = super::Frame { - inner: Frame { - stack_frame: StackFrame::New(inner), - base_address: 0 as _, - }, - }; - let image = init_frame(&mut frame.inner, &context.0); - let frame_ptr = match &mut frame.inner.stack_frame { - StackFrame::New(ptr) => ptr as *mut STACKFRAME_EX, - _ => unreachable!(), - }; - - while StackWalkEx( - image as u32, - process, - thread, - frame_ptr, - &mut context.0 as *mut CONTEXT as *mut _, - None, - Some(function_table_access), - Some(get_module_base), - None, - 0, - ) == TRUE - { - frame.inner.base_address = get_module_base(process_handle, frame.ip() as _) as _; - - if !cb(&frame) { - break; - } - } - } - None => { - let mut frame = super::Frame { - inner: Frame { - stack_frame: StackFrame::Old(mem::zeroed()), - base_address: 0 as _, - }, - }; - let image = init_frame(&mut frame.inner, &context.0); - let frame_ptr = match &mut frame.inner.stack_frame { - StackFrame::Old(ptr) => ptr as *mut STACKFRAME64, - _ => unreachable!(), - }; - - while dbghelp.StackWalk64()( - image as u32, - process, - thread, - frame_ptr, - &mut context.0 as *mut CONTEXT as *mut _, - None, - Some(function_table_access), - Some(get_module_base), - None, - ) == TRUE - { - frame.inner.base_address = get_module_base(process_handle, frame.ip() as _) as _; - - if !cb(&frame) { - break; - } - } - } - } -} - -#[cfg(target_arch = "x86")] -fn init_frame(frame: &mut Frame, ctx: &CONTEXT) -> u16 { - frame.addr_pc_mut().Offset = ctx.Eip as u64; - frame.addr_pc_mut().Mode = AddrModeFlat; - frame.addr_stack_mut().Offset = ctx.Esp as u64; - frame.addr_stack_mut().Mode = AddrModeFlat; - frame.addr_frame_mut().Offset = ctx.Ebp as u64; - frame.addr_frame_mut().Mode = AddrModeFlat; - - IMAGE_FILE_MACHINE_I386 -} - -#[cfg(target_arch = "arm")] -fn init_frame(frame: &mut Frame, ctx: &CONTEXT) -> u16 { - frame.addr_pc_mut().Offset = ctx.Pc as u64; - frame.addr_pc_mut().Mode = AddrModeFlat; - frame.addr_stack_mut().Offset = ctx.Sp as u64; - frame.addr_stack_mut().Mode = AddrModeFlat; - unsafe { - frame.addr_frame_mut().Offset = ctx.R11 as u64; - } - frame.addr_frame_mut().Mode = AddrModeFlat; - IMAGE_FILE_MACHINE_ARMNT -} diff --git a/vendor/backtrace/src/backtrace/win64.rs b/vendor/backtrace/src/backtrace/win64.rs deleted file mode 100644 index 81f63585..00000000 --- a/vendor/backtrace/src/backtrace/win64.rs +++ /dev/null @@ -1,151 +0,0 @@ -//! Backtrace strategy for Windows `x86_64` and `aarch64` platforms. -//! -//! This module contains the ability to capture a backtrace on Windows using -//! `RtlVirtualUnwind` to walk the stack one frame at a time. This function is much faster than using -//! `dbghelp!StackWalk*` because it does not load debug info to report inlined frames. -//! We still report inlined frames during symbolization by consulting the appropriate -//! `dbghelp` functions. - -use super::super::windows_sys::*; -use core::ffi::c_void; - -#[derive(Clone, Copy)] -pub struct Frame { - base_address: *mut c_void, - ip: *mut c_void, - sp: *mut c_void, - #[cfg(not(target_env = "gnu"))] - inline_context: Option<u32>, -} - -// we're just sending around raw pointers and reading them, never interpreting -// them so this should be safe to both send and share across threads. -unsafe impl Send for Frame {} -unsafe impl Sync for Frame {} - -impl Frame { - pub fn ip(&self) -> *mut c_void { - self.ip - } - - pub fn sp(&self) -> *mut c_void { - self.sp - } - - pub fn symbol_address(&self) -> *mut c_void { - self.ip - } - - pub fn module_base_address(&self) -> Option<*mut c_void> { - Some(self.base_address) - } - - #[cfg(not(target_env = "gnu"))] - pub fn inline_context(&self) -> Option<u32> { - self.inline_context - } -} - -#[repr(C, align(16))] // required by `CONTEXT`, is a FIXME in windows metadata right now -struct MyContext(CONTEXT); - -#[cfg(any(target_arch = "x86_64", target_arch = "arm64ec"))] -impl MyContext { - #[inline(always)] - fn ip(&self) -> u64 { - self.0.Rip - } - - #[inline(always)] - fn sp(&self) -> u64 { - self.0.Rsp - } -} - -#[cfg(target_arch = "aarch64")] -impl MyContext { - #[inline(always)] - fn ip(&self) -> usize { - self.0.Pc as usize - } - - #[inline(always)] - fn sp(&self) -> usize { - self.0.Sp as usize - } -} - -#[inline(always)] -pub unsafe fn trace(cb: &mut dyn FnMut(&super::Frame) -> bool) { - use core::ptr; - - // Capture the initial context to start walking from. - // FIXME: shouldn't this have a Default impl? - let mut context = unsafe { core::mem::zeroed::<MyContext>() }; - unsafe { RtlCaptureContext(&mut context.0) }; - - loop { - let ip = context.ip(); - - // The base address of the module containing the function will be stored here - // when RtlLookupFunctionEntry returns successfully. - let mut base = 0; - // We use the `RtlLookupFunctionEntry` function in kernel32 which allows - // us to backtrace through JIT frames. - // Note that `RtlLookupFunctionEntry` only works for in-process backtraces, - // but that's all we support anyway, so it all lines up well. - let fn_entry = unsafe { RtlLookupFunctionEntry(ip, &mut base, ptr::null_mut()) }; - if fn_entry.is_null() { - // No function entry could be found - this may indicate a corrupt - // stack or that a binary was unloaded (amongst other issues). Stop - // walking and don't call the callback as we can't be confident in - // this frame or the rest of the stack. - break; - } - - let frame = super::Frame { - inner: Frame { - base_address: base as *mut c_void, - ip: ip as *mut c_void, - sp: context.sp() as *mut c_void, - #[cfg(not(target_env = "gnu"))] - inline_context: None, - }, - }; - - // We've loaded all the info about the current frame, so now call the - // callback. - if !cb(&frame) { - // Callback told us to stop, so we're done. - break; - } - - // Unwind to the next frame. - let previous_ip = ip; - let previous_sp = context.sp(); - let mut handler_data = 0usize; - let mut establisher_frame = 0; - unsafe { - RtlVirtualUnwind( - 0, - base, - ip, - fn_entry, - &mut context.0, - ptr::addr_of_mut!(handler_data).cast::<*mut c_void>(), - &mut establisher_frame, - ptr::null_mut(), - ); - } - - // RtlVirtualUnwind indicates the end of the stack in two different ways: - // * On x64, it sets the instruction pointer to 0. - // * On ARM64, it leaves the context unchanged (easiest way to check is - // to see if the instruction and stack pointers are the same). - // If we detect either of these, then unwinding is completed. - let ip = context.ip(); - if ip == 0 || (ip == previous_ip && context.sp() == previous_sp) { - break; - } - } -} diff --git a/vendor/backtrace/src/capture.rs b/vendor/backtrace/src/capture.rs deleted file mode 100644 index eb672593..00000000 --- a/vendor/backtrace/src/capture.rs +++ /dev/null @@ -1,621 +0,0 @@ -#![allow(clippy::from_over_into)] - -#[cfg(feature = "serde")] -use crate::resolve; -use crate::PrintFmt; -use crate::{resolve_frame, trace, BacktraceFmt, Symbol, SymbolName}; -use core::ffi::c_void; -use std::fmt; -use std::path::{Path, PathBuf}; -use std::prelude::v1::*; - -#[cfg(feature = "serde")] -use serde::{Deserialize, Serialize}; - -/// Representation of an owned and self-contained backtrace. -/// -/// This structure can be used to capture a backtrace at various points in a -/// program and later used to inspect what the backtrace was at that time. -/// -/// `Backtrace` supports pretty-printing of backtraces through its `Debug` -/// implementation. -/// -/// # Required features -/// -/// This function requires the `std` feature of the `backtrace` crate to be -/// enabled, and the `std` feature is enabled by default. -#[derive(Clone)] -#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))] -pub struct Backtrace { - // Frames here are listed from top-to-bottom of the stack - frames: Box<[BacktraceFrame]>, -} - -#[derive(Clone, Copy)] -struct TracePtr(*mut c_void); -/// SAFETY: These pointers are always valid within a process and are not used for mutation. -unsafe impl Send for TracePtr {} -/// SAFETY: These pointers are always valid within a process and are not used for mutation. -unsafe impl Sync for TracePtr {} - -impl TracePtr { - fn into_void(self) -> *mut c_void { - self.0 - } - #[cfg(feature = "serde")] - fn from_addr(addr: usize) -> Self { - TracePtr(addr as *mut c_void) - } -} - -#[cfg(feature = "serde")] -impl<'de> Deserialize<'de> for TracePtr { - #[inline] - fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> - where - D: serde::Deserializer<'de>, - { - struct PrimitiveVisitor; - - impl<'de> serde::de::Visitor<'de> for PrimitiveVisitor { - type Value = TracePtr; - - fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result { - formatter.write_str("usize") - } - - #[inline] - fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E> - where - E: serde::de::Error, - { - Ok(TracePtr(v as usize as *mut c_void)) - } - - #[inline] - fn visit_u16<E>(self, v: u16) -> Result<Self::Value, E> - where - E: serde::de::Error, - { - Ok(TracePtr(v as usize as *mut c_void)) - } - - #[inline] - fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E> - where - E: serde::de::Error, - { - if usize::BITS >= 32 { - Ok(TracePtr(v as usize as *mut c_void)) - } else { - Err(E::invalid_type( - serde::de::Unexpected::Unsigned(v as _), - &self, - )) - } - } - - #[inline] - fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E> - where - E: serde::de::Error, - { - if usize::BITS >= 64 { - Ok(TracePtr(v as usize as *mut c_void)) - } else { - Err(E::invalid_type( - serde::de::Unexpected::Unsigned(v as _), - &self, - )) - } - } - } - - deserializer.deserialize_u64(PrimitiveVisitor) - } -} - -#[cfg(feature = "serde")] -impl Serialize for TracePtr { - #[inline] - fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> - where - S: serde::ser::Serializer, - { - serializer.serialize_u64(self.0 as usize as u64) - } -} - -fn _assert_send_sync() { - fn _assert<T: Send + Sync>() {} - _assert::<Backtrace>(); -} - -/// Captured version of a frame in a backtrace. -/// -/// This type is returned as a list from `Backtrace::frames` and represents one -/// stack frame in a captured backtrace. -/// -/// # Required features -/// -/// This function requires the `std` feature of the `backtrace` crate to be -/// enabled, and the `std` feature is enabled by default. -#[derive(Clone)] -pub struct BacktraceFrame { - frame: Frame, - symbols: Option<Box<[BacktraceSymbol]>>, -} - -#[derive(Clone)] -enum Frame { - Raw(crate::Frame), - #[cfg(feature = "serde")] - Deserialized { - ip: TracePtr, - symbol_address: TracePtr, - module_base_address: Option<TracePtr>, - }, -} - -impl Frame { - fn ip(&self) -> *mut c_void { - match *self { - Frame::Raw(ref f) => f.ip(), - #[cfg(feature = "serde")] - Frame::Deserialized { ip, .. } => ip.into_void(), - } - } - - fn symbol_address(&self) -> *mut c_void { - match *self { - Frame::Raw(ref f) => f.symbol_address(), - #[cfg(feature = "serde")] - Frame::Deserialized { symbol_address, .. } => symbol_address.into_void(), - } - } - - fn module_base_address(&self) -> Option<*mut c_void> { - match *self { - Frame::Raw(ref f) => f.module_base_address(), - #[cfg(feature = "serde")] - Frame::Deserialized { - module_base_address, - .. - } => module_base_address.map(|addr| addr.into_void()), - } - } - - /// Resolve all addresses in the frame to their symbolic names. - fn resolve_symbols(&self) -> Box<[BacktraceSymbol]> { - let mut symbols = Vec::new(); - let sym = |symbol: &Symbol| { - symbols.push(BacktraceSymbol { - name: symbol.name().map(|m| m.as_bytes().into()), - addr: symbol.addr().map(TracePtr), - filename: symbol.filename().map(|m| m.to_owned()), - lineno: symbol.lineno(), - colno: symbol.colno(), - }); - }; - match *self { - Frame::Raw(ref f) => resolve_frame(f, sym), - #[cfg(feature = "serde")] - Frame::Deserialized { ip, .. } => { - resolve(ip.into_void(), sym); - } - } - symbols.into_boxed_slice() - } -} - -/// Captured version of a symbol in a backtrace. -/// -/// This type is returned as a list from `BacktraceFrame::symbols` and -/// represents the metadata for a symbol in a backtrace. -/// -/// # Required features -/// -/// This function requires the `std` feature of the `backtrace` crate to be -/// enabled, and the `std` feature is enabled by default. -#[derive(Clone)] -#[cfg_attr(feature = "serde", derive(Deserialize, Serialize))] -pub struct BacktraceSymbol { - name: Option<Box<[u8]>>, - addr: Option<TracePtr>, - filename: Option<PathBuf>, - lineno: Option<u32>, - colno: Option<u32>, -} - -impl Backtrace { - /// Captures a backtrace at the callsite of this function, returning an - /// owned representation. - /// - /// This function is useful for representing a backtrace as an object in - /// Rust. This returned value can be sent across threads and printed - /// elsewhere, and the purpose of this value is to be entirely self - /// contained. - /// - /// Note that on some platforms acquiring a full backtrace and resolving it - /// can be extremely expensive. If the cost is too much for your application - /// it's recommended to instead use `Backtrace::new_unresolved()` which - /// avoids the symbol resolution step (which typically takes the longest) - /// and allows deferring that to a later date. - /// - /// # Examples - /// - /// ``` - /// use backtrace::Backtrace; - /// - /// let current_backtrace = Backtrace::new(); - /// ``` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - #[inline(never)] // want to make sure there's a frame here to remove - pub fn new() -> Backtrace { - let mut bt = Self::create(Self::new as usize); - bt.resolve(); - bt - } - - /// Similar to `new` except that this does not resolve any symbols, this - /// simply captures the backtrace as a list of addresses. - /// - /// At a later time the `resolve` function can be called to resolve this - /// backtrace's symbols into readable names. This function exists because - /// the resolution process can sometimes take a significant amount of time - /// whereas any one backtrace may only be rarely printed. - /// - /// # Examples - /// - /// ``` - /// use backtrace::Backtrace; - /// - /// let mut current_backtrace = Backtrace::new_unresolved(); - /// println!("{current_backtrace:?}"); // no symbol names - /// current_backtrace.resolve(); - /// println!("{current_backtrace:?}"); // symbol names now present - /// ``` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - #[inline(never)] // want to make sure there's a frame here to remove - pub fn new_unresolved() -> Backtrace { - Self::create(Self::new_unresolved as usize) - } - - fn create(ip: usize) -> Backtrace { - let mut frames = Vec::new(); - trace(|frame| { - frames.push(BacktraceFrame { - frame: Frame::Raw(frame.clone()), - symbols: None, - }); - - // clear inner frames, and start with call site. - if frame.symbol_address() as usize == ip { - frames.clear(); - } - - true - }); - frames.shrink_to_fit(); - - Backtrace { - frames: frames.into_boxed_slice(), - } - } - - /// Returns the frames from when this backtrace was captured. - /// - /// The first entry of this slice is likely the function `Backtrace::new`, - /// and the last frame is likely something about how this thread or the main - /// function started. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn frames(&self) -> &[BacktraceFrame] { - self.frames.as_ref() - } - - /// If this backtrace was created from `new_unresolved` then this function - /// will resolve all addresses in the backtrace to their symbolic names. - /// - /// If this backtrace has been previously resolved or was created through - /// `new`, this function does nothing. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn resolve(&mut self) { - self.frames.iter_mut().for_each(BacktraceFrame::resolve); - } -} - -impl From<Vec<BacktraceFrame>> for Backtrace { - fn from(frames: Vec<BacktraceFrame>) -> Self { - Backtrace { - frames: frames.into_boxed_slice(), - } - } -} - -impl From<crate::Frame> for BacktraceFrame { - fn from(frame: crate::Frame) -> Self { - BacktraceFrame { - frame: Frame::Raw(frame), - symbols: None, - } - } -} - -// we don't want to implement `impl From<Backtrace> for Vec<BacktraceFrame>` on purpose, -// because "... additional directions for Vec<T> can weaken type inference ..." -// more information on https://github.com/rust-lang/backtrace-rs/pull/526 -impl Into<Vec<BacktraceFrame>> for Backtrace { - fn into(self) -> Vec<BacktraceFrame> { - self.frames.into_vec() - } -} - -impl BacktraceFrame { - /// Same as `Frame::ip` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn ip(&self) -> *mut c_void { - self.frame.ip() - } - - /// Same as `Frame::symbol_address` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn symbol_address(&self) -> *mut c_void { - self.frame.symbol_address() - } - - /// Same as `Frame::module_base_address` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn module_base_address(&self) -> Option<*mut c_void> { - self.frame.module_base_address() - } - - /// Returns the list of symbols that this frame corresponds to. - /// - /// Normally there is only one symbol per frame, but sometimes if a number - /// of functions are inlined into one frame then multiple symbols will be - /// returned. The first symbol listed is the "innermost function", whereas - /// the last symbol is the outermost (last caller). - /// - /// Note that if this frame came from an unresolved backtrace then this will - /// return an empty list. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn symbols(&self) -> &[BacktraceSymbol] { - self.symbols.as_ref().map(|s| &s[..]).unwrap_or(&[]) - } - - /// Resolve all addresses in this frame to their symbolic names. - /// - /// If this frame has been previously resolved, this function does nothing. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn resolve(&mut self) { - if self.symbols.is_none() { - self.symbols = Some(self.frame.resolve_symbols()); - } - } -} - -impl BacktraceSymbol { - /// Same as `Symbol::name` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn name(&self) -> Option<SymbolName<'_>> { - self.name.as_ref().map(|s| SymbolName::new(s)) - } - - /// Same as `Symbol::addr` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn addr(&self) -> Option<*mut c_void> { - self.addr.map(|s| s.into_void()) - } - - /// Same as `Symbol::filename` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn filename(&self) -> Option<&Path> { - self.filename.as_deref() - } - - /// Same as `Symbol::lineno` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn lineno(&self) -> Option<u32> { - self.lineno - } - - /// Same as `Symbol::colno` - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn colno(&self) -> Option<u32> { - self.colno - } -} - -impl fmt::Debug for Backtrace { - fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { - let style = if fmt.alternate() { - PrintFmt::Full - } else { - PrintFmt::Short - }; - - // When printing paths we try to strip the cwd if it exists, otherwise - // we just print the path as-is. Note that we also only do this for the - // short format, because if it's full we presumably want to print - // everything. - let cwd = std::env::current_dir(); - let mut print_path = - move |fmt: &mut fmt::Formatter<'_>, path: crate::BytesOrWideString<'_>| { - let path = path.into_path_buf(); - if style == PrintFmt::Full { - if let Ok(cwd) = &cwd { - if let Ok(suffix) = path.strip_prefix(cwd) { - return fmt::Display::fmt(&suffix.display(), fmt); - } - } - } - fmt::Display::fmt(&path.display(), fmt) - }; - - let mut f = BacktraceFmt::new(fmt, style, &mut print_path); - f.add_context()?; - for frame in &self.frames { - f.frame().backtrace_frame(frame)?; - } - f.finish()?; - Ok(()) - } -} - -impl Default for Backtrace { - fn default() -> Backtrace { - Backtrace::new() - } -} - -impl fmt::Debug for BacktraceFrame { - fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { - fmt.debug_struct("BacktraceFrame") - .field("ip", &self.ip()) - .field("symbol_address", &self.symbol_address()) - .finish() - } -} - -impl fmt::Debug for BacktraceSymbol { - fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { - fmt.debug_struct("BacktraceSymbol") - .field("name", &self.name()) - .field("addr", &self.addr()) - .field("filename", &self.filename()) - .field("lineno", &self.lineno()) - .field("colno", &self.colno()) - .finish() - } -} - -#[cfg(feature = "serde")] -mod serde_impls { - use super::*; - use serde::de::Deserializer; - use serde::ser::Serializer; - use serde::{Deserialize, Serialize}; - - #[derive(Serialize, Deserialize)] - struct SerializedFrame { - ip: usize, - symbol_address: usize, - module_base_address: Option<usize>, - symbols: Option<Box<[BacktraceSymbol]>>, - } - - impl Serialize for BacktraceFrame { - fn serialize<S>(&self, s: S) -> Result<S::Ok, S::Error> - where - S: Serializer, - { - let BacktraceFrame { frame, symbols } = self; - SerializedFrame { - ip: frame.ip() as usize, - symbol_address: frame.symbol_address() as usize, - module_base_address: frame.module_base_address().map(|sym_a| sym_a as usize), - symbols: symbols.clone(), - } - .serialize(s) - } - } - - impl<'a> Deserialize<'a> for BacktraceFrame { - fn deserialize<D>(d: D) -> Result<Self, D::Error> - where - D: Deserializer<'a>, - { - let frame: SerializedFrame = SerializedFrame::deserialize(d)?; - Ok(BacktraceFrame { - frame: Frame::Deserialized { - ip: TracePtr::from_addr(frame.ip), - symbol_address: TracePtr::from_addr(frame.symbol_address), - module_base_address: frame.module_base_address.map(TracePtr::from_addr), - }, - symbols: frame.symbols, - }) - } - } -} - -#[cfg(test)] -mod tests { - use super::*; - - #[test] - fn test_frame_conversion() { - let mut frames = vec![]; - crate::trace(|frame| { - let converted = BacktraceFrame::from(frame.clone()); - frames.push(converted); - true - }); - - let mut manual = Backtrace::from(frames); - manual.resolve(); - let frames = manual.frames(); - - for frame in frames { - println!("{:?}", frame.ip()); - println!("{:?}", frame.symbol_address()); - println!("{:?}", frame.module_base_address()); - println!("{:?}", frame.symbols()); - } - } -} diff --git a/vendor/backtrace/src/dbghelp.rs b/vendor/backtrace/src/dbghelp.rs deleted file mode 100644 index df31fefb..00000000 --- a/vendor/backtrace/src/dbghelp.rs +++ /dev/null @@ -1,487 +0,0 @@ -//! A module to assist in managing dbghelp bindings on Windows -//! -//! Backtraces on Windows (at least for MSVC) are largely powered through -//! `dbghelp.dll` and the various functions that it contains. These functions -//! are currently loaded *dynamically* rather than linking to `dbghelp.dll` -//! statically. This is currently done by the standard library (and is in theory -//! required there), but is an effort to help reduce the static dll dependencies -//! of a library since backtraces are typically pretty optional. That being -//! said, `dbghelp.dll` almost always successfully loads on Windows. -//! -//! Note though that since we're loading all this support dynamically we can't -//! actually use the raw definitions in `windows_sys`, but rather we need to define -//! the function pointer types ourselves and use that. We don't really want to -//! be in the business of duplicating auto-generated bindings, so we assert that all bindings match -//! those in `windows_sys.rs`. -//! -//! Finally, you'll note here that the dll for `dbghelp.dll` is never unloaded, -//! and that's currently intentional. The thinking is that we can globally cache -//! it and use it between calls to the API, avoiding expensive loads/unloads. If -//! this is a problem for leak detectors or something like that we can cross the -//! bridge when we get there. - -#![allow(non_snake_case)] - -use alloc::vec::Vec; - -use super::windows_sys::*; -use core::ffi::c_void; -use core::mem; -use core::ptr; -use core::slice; - -// This macro is used to define a `Dbghelp` structure which internally contains -// all the function pointers that we might load. -macro_rules! dbghelp { - (extern "system" { - $(fn $name:ident($($arg:ident: $argty:ty),*) -> $ret: ty;)* - }) => ( - pub struct Dbghelp { - /// The loaded DLL for `dbghelp.dll` - dll: HINSTANCE, - - // Each function pointer for each function we might use - $($name: usize,)* - } - - static mut DBGHELP: Dbghelp = Dbghelp { - // Initially we haven't loaded the DLL - dll: ptr::null_mut(), - // Initially all functions are set to zero to say they need to be - // dynamically loaded. - $($name: 0,)* - }; - - // Convenience typedef for each function type. - $(pub type $name = unsafe extern "system" fn($($argty),*) -> $ret;)* - - impl Dbghelp { - /// Attempts to open `dbghelp.dll`. Returns success if it works or - /// error if `LoadLibraryW` fails. - fn ensure_open(&mut self) -> Result<(), ()> { - if !self.dll.is_null() { - return Ok(()) - } - let lib = b"dbghelp.dll\0"; - unsafe { - self.dll = LoadLibraryA(lib.as_ptr()); - if self.dll.is_null() { - Err(()) - } else { - Ok(()) - } - } - } - - // Function for each method we'd like to use. When called it will - // either read the cached function pointer or load it and return the - // loaded value. Loads are asserted to succeed. - $(pub fn $name(&mut self) -> Option<$name> { - // Assert that windows_sys::$name is declared to have the same - // argument types and return type as our declaration, although - // it might be either extern "C" or extern "system". - cfg_if::cfg_if! { - if #[cfg(any(target_arch = "x86", not(windows_raw_dylib)))] { - let _: unsafe extern "system" fn($($argty),*) -> $ret = super::windows_sys::$name; - } else { - let _: unsafe extern "C" fn($($argty),*) -> $ret = super::windows_sys::$name; - } - } - - unsafe { - if self.$name == 0 { - let name = concat!(stringify!($name), "\0"); - self.$name = self.symbol(name.as_bytes())?; - } - Some(mem::transmute::<usize, $name>(self.$name)) - } - })* - - fn symbol(&self, symbol: &[u8]) -> Option<usize> { - unsafe { - GetProcAddress(self.dll, symbol.as_ptr()).map(|address|address as usize) - } - } - } - - // Convenience proxy to use the cleanup locks to reference dbghelp - // functions. - #[allow(dead_code)] - impl Init { - $(pub fn $name(&self) -> $name { - // FIXME: https://github.com/rust-lang/backtrace-rs/issues/678 - #[allow(static_mut_refs)] - unsafe { - DBGHELP.$name().unwrap() - } - })* - - pub fn dbghelp(&self) -> *mut Dbghelp { - #[allow(unused_unsafe)] - unsafe { ptr::addr_of_mut!(DBGHELP) } - } - } - ) - -} - -dbghelp! { - extern "system" { - fn SymGetOptions() -> u32; - fn SymSetOptions(options: u32) -> u32; - fn SymInitializeW( - handle: HANDLE, - path: PCWSTR, - invade: BOOL - ) -> BOOL; - fn SymGetSearchPathW( - hprocess: HANDLE, - searchpatha: PWSTR, - searchpathlength: u32 - ) -> BOOL; - fn SymSetSearchPathW( - hprocess: HANDLE, - searchpatha: PCWSTR - ) -> BOOL; - fn EnumerateLoadedModulesW64( - hprocess: HANDLE, - enumloadedmodulescallback: PENUMLOADED_MODULES_CALLBACKW64, - usercontext: *const c_void - ) -> BOOL; - fn StackWalk64( - MachineType: u32, - hProcess: HANDLE, - hThread: HANDLE, - StackFrame: *mut STACKFRAME64, - ContextRecord: *mut c_void, - ReadMemoryRoutine: PREAD_PROCESS_MEMORY_ROUTINE64, - FunctionTableAccessRoutine: PFUNCTION_TABLE_ACCESS_ROUTINE64, - GetModuleBaseRoutine: PGET_MODULE_BASE_ROUTINE64, - TranslateAddress: PTRANSLATE_ADDRESS_ROUTINE64 - ) -> BOOL; - fn SymFunctionTableAccess64( - hProcess: HANDLE, - AddrBase: u64 - ) -> *mut c_void; - fn SymGetModuleBase64( - hProcess: HANDLE, - AddrBase: u64 - ) -> u64; - fn SymFromAddrW( - hProcess: HANDLE, - Address: u64, - Displacement: *mut u64, - Symbol: *mut SYMBOL_INFOW - ) -> BOOL; - fn SymGetLineFromAddrW64( - hProcess: HANDLE, - dwAddr: u64, - pdwDisplacement: *mut u32, - Line: *mut IMAGEHLP_LINEW64 - ) -> BOOL; - fn StackWalkEx( - MachineType: u32, - hProcess: HANDLE, - hThread: HANDLE, - StackFrame: *mut STACKFRAME_EX, - ContextRecord: *mut c_void, - ReadMemoryRoutine: PREAD_PROCESS_MEMORY_ROUTINE64, - FunctionTableAccessRoutine: PFUNCTION_TABLE_ACCESS_ROUTINE64, - GetModuleBaseRoutine: PGET_MODULE_BASE_ROUTINE64, - TranslateAddress: PTRANSLATE_ADDRESS_ROUTINE64, - Flags: u32 - ) -> BOOL; - fn SymFromInlineContextW( - hProcess: HANDLE, - Address: u64, - InlineContext: u32, - Displacement: *mut u64, - Symbol: *mut SYMBOL_INFOW - ) -> BOOL; - fn SymGetLineFromInlineContextW( - hProcess: HANDLE, - dwAddr: u64, - InlineContext: u32, - qwModuleBaseAddress: u64, - pdwDisplacement: *mut u32, - Line: *mut IMAGEHLP_LINEW64 - ) -> BOOL; - fn SymAddrIncludeInlineTrace( - hProcess: HANDLE, - Address: u64 - ) -> u32; - fn SymQueryInlineTrace( - hProcess: HANDLE, - StartAddress: u64, - StartContext: u32, - StartRetAddress: u64, - CurAddress: u64, - CurContext: *mut u32, - CurFrameIndex: *mut u32 - ) -> BOOL; - } -} - -pub struct Init { - lock: HANDLE, -} - -/// Initialize all support necessary to access `dbghelp` API functions from this -/// crate. -/// -/// Note that this function is **safe**, it internally has its own -/// synchronization. Also note that it is safe to call this function multiple -/// times recursively. -pub fn init() -> Result<Init, ()> { - use core::sync::atomic::{AtomicPtr, Ordering::SeqCst}; - - // Helper function for generating a name that's unique to the process. - fn mutex_name() -> [u8; 33] { - let mut name: [u8; 33] = *b"Local\\RustBacktraceMutex00000000\0"; - let mut id = unsafe { GetCurrentProcessId() }; - // Quick and dirty no alloc u32 to hex. - let mut index = name.len() - 1; - while id > 0 { - name[index - 1] = match (id & 0xF) as u8 { - h @ 0..=9 => b'0' + h, - h => b'A' + (h - 10), - }; - id >>= 4; - index -= 1; - } - name - } - - unsafe { - // First thing we need to do is to synchronize this function. This can - // be called concurrently from other threads or recursively within one - // thread. Note that it's trickier than that though because what we're - // using here, `dbghelp`, *also* needs to be synchronized with all other - // callers to `dbghelp` in this process. - // - // Typically there aren't really that many calls to `dbghelp` within the - // same process and we can probably safely assume that we're the only - // ones accessing it. There is, however, one primary other user we have - // to worry about which is ironically ourselves, but in the standard - // library. The Rust standard library depends on this crate for - // backtrace support, and this crate also exists on crates.io. This - // means that if the standard library is printing a panic backtrace it - // may race with this crate coming from crates.io, causing segfaults. - // - // To help solve this synchronization problem we employ a - // Windows-specific trick here (it is, after all, a Windows-specific - // restriction about synchronization). We create a *session-local* named - // mutex to protect this call. The intention here is that the standard - // library and this crate don't have to share Rust-level APIs to - // synchronize here but can instead work behind the scenes to make sure - // they're synchronizing with one another. That way when this function - // is called through the standard library or through crates.io we can be - // sure that the same mutex is being acquired. - // - // So all of that is to say that the first thing we do here is we - // atomically create a `HANDLE` which is a named mutex on Windows. We - // synchronize a bit with other threads sharing this function - // specifically and ensure that only one handle is created per instance - // of this function. Note that the handle is never closed once it's - // stored in the global. - // - // After we've actually go the lock we simply acquire it, and our `Init` - // handle we hand out will be responsible for dropping it eventually. - static LOCK: AtomicPtr<c_void> = AtomicPtr::new(ptr::null_mut()); - let mut lock = LOCK.load(SeqCst); - if lock.is_null() { - let name = mutex_name(); - lock = CreateMutexA(ptr::null_mut(), FALSE, name.as_ptr()); - if lock.is_null() { - return Err(()); - } - if let Err(other) = LOCK.compare_exchange(ptr::null_mut(), lock, SeqCst, SeqCst) { - debug_assert!(!other.is_null()); - CloseHandle(lock); - lock = other; - } - } - debug_assert!(!lock.is_null()); - let r = WaitForSingleObjectEx(lock, INFINITE, FALSE); - debug_assert_eq!(r, 0); - let ret = Init { lock }; - - // Ok, phew! Now that we're all safely synchronized, let's actually - // start processing everything. First up we need to ensure that - // `dbghelp.dll` is actually loaded in this process. We do this - // dynamically to avoid a static dependency. This has historically been - // done to work around weird linking issues and is intended at making - // binaries a bit more portable since this is largely just a debugging - // utility. - // - // Once we've opened `dbghelp.dll` we need to call some initialization - // functions in it, and that's detailed more below. We only do this - // once, though, so we've got a global boolean indicating whether we're - // done yet or not. - // FIXME: https://github.com/rust-lang/backtrace-rs/issues/678 - #[allow(static_mut_refs)] - DBGHELP.ensure_open()?; - - static mut INITIALIZED: bool = false; - if !INITIALIZED { - set_optional_options(ret.dbghelp()); - INITIALIZED = true; - } - Ok(ret) - } -} -unsafe fn set_optional_options(dbghelp: *mut Dbghelp) -> Option<()> { - unsafe { - let orig = (*dbghelp).SymGetOptions()?(); - - // Ensure that the `SYMOPT_DEFERRED_LOADS` flag is set, because - // according to MSVC's own docs about this: "This is the fastest, most - // efficient way to use the symbol handler.", so let's do that! - (*dbghelp).SymSetOptions()?(orig | SYMOPT_DEFERRED_LOADS); - - // Actually initialize symbols with MSVC. Note that this can fail, but we - // ignore it. There's not a ton of prior art for this per se, but LLVM - // internally seems to ignore the return value here and one of the - // sanitizer libraries in LLVM prints a scary warning if this fails but - // basically ignores it in the long run. - // - // One case this comes up a lot for Rust is that the standard library and - // this crate on crates.io both want to compete for `SymInitializeW`. The - // standard library historically wanted to initialize then cleanup most of - // the time, but now that it's using this crate it means that someone will - // get to initialization first and the other will pick up that - // initialization. - (*dbghelp).SymInitializeW()?(GetCurrentProcess(), ptr::null_mut(), TRUE); - - // The default search path for dbghelp will only look in the current working - // directory and (possibly) `_NT_SYMBOL_PATH` and `_NT_ALT_SYMBOL_PATH`. - // However, we also want to look in the directory of the executable - // and each DLL that is loaded. To do this, we need to update the search path - // to include these directories. - // - // See https://learn.microsoft.com/cpp/build/reference/pdbpath for an - // example of where symbols are usually searched for. - let mut search_path_buf = Vec::new(); - search_path_buf.resize(1024, 0); - - // Prefill the buffer with the current search path. - if (*dbghelp).SymGetSearchPathW()?( - GetCurrentProcess(), - search_path_buf.as_mut_ptr(), - search_path_buf.len() as _, - ) == TRUE - { - // Trim the buffer to the actual length of the string. - let len = lstrlenW(search_path_buf.as_mut_ptr()); - assert!(len >= 0); - search_path_buf.truncate(len as usize); - } else { - // If getting the search path fails, at least include the current directory. - search_path_buf.clear(); - search_path_buf.push(utf16_char('.')); - search_path_buf.push(utf16_char(';')); - } - - let mut search_path = SearchPath::new(search_path_buf); - - // Update the search path to include the directory of the executable and each DLL. - (*dbghelp).EnumerateLoadedModulesW64()?( - GetCurrentProcess(), - Some(enum_loaded_modules_callback), - ((&mut search_path) as *mut SearchPath) as *mut c_void, - ); - - let new_search_path = search_path.finalize(); - - // Set the new search path. - (*dbghelp).SymSetSearchPathW()?(GetCurrentProcess(), new_search_path.as_ptr()); - } - Some(()) -} - -struct SearchPath { - search_path_utf16: Vec<u16>, -} - -fn utf16_char(c: char) -> u16 { - let buf = &mut [0u16; 2]; - let buf = c.encode_utf16(buf); - assert!(buf.len() == 1); - buf[0] -} - -impl SearchPath { - fn new(initial_search_path: Vec<u16>) -> Self { - Self { - search_path_utf16: initial_search_path, - } - } - - /// Add a path to the search path if it is not already present. - fn add(&mut self, path: &[u16]) { - let sep = utf16_char(';'); - - // We could deduplicate in a case-insensitive way, but case-sensitivity - // can be configured by directory on Windows, so let's not do that. - // https://learn.microsoft.com/windows/wsl/case-sensitivity - if !self - .search_path_utf16 - .split(|&c| c == sep) - .any(|p| p == path) - { - if self.search_path_utf16.last() != Some(&sep) { - self.search_path_utf16.push(sep); - } - self.search_path_utf16.extend_from_slice(path); - } - } - - fn finalize(mut self) -> Vec<u16> { - // Add a null terminator. - self.search_path_utf16.push(0); - self.search_path_utf16 - } -} - -extern "system" fn enum_loaded_modules_callback( - module_name: PCWSTR, - _: u64, - _: u32, - user_context: *const c_void, -) -> BOOL { - // `module_name` is an absolute path like `C:\path\to\module.dll` - // or `C:\path\to\module.exe` - let len: usize = unsafe { lstrlenW(module_name).try_into().unwrap() }; - - if len == 0 { - // This should not happen, but if it does, we can just ignore it. - return TRUE; - } - - let module_name = unsafe { slice::from_raw_parts(module_name, len) }; - let path_sep = utf16_char('\\'); - let alt_path_sep = utf16_char('/'); - - let Some(end_of_directory) = module_name - .iter() - .rposition(|&c| c == path_sep || c == alt_path_sep) - else { - // `module_name` being an absolute path, it should always contain at least one - // path separator. If not, there is nothing we can do. - return TRUE; - }; - - let search_path = unsafe { &mut *(user_context as *mut SearchPath) }; - search_path.add(&module_name[..end_of_directory]); - - TRUE -} - -impl Drop for Init { - fn drop(&mut self) { - unsafe { - let r = ReleaseMutex(self.lock); - debug_assert!(r != 0); - } - } -} diff --git a/vendor/backtrace/src/lib.rs b/vendor/backtrace/src/lib.rs deleted file mode 100644 index 13ca6b58..00000000 --- a/vendor/backtrace/src/lib.rs +++ /dev/null @@ -1,251 +0,0 @@ -//! A library for acquiring a backtrace at runtime -//! -//! This library is meant to supplement the `RUST_BACKTRACE=1` support of the -//! standard library by allowing an acquisition of a backtrace at runtime -//! programmatically. The backtraces generated by this library do not need to be -//! parsed, for example, and expose the functionality of multiple backend -//! implementations. -//! -//! # Usage -//! -//! First, add this to your Cargo.toml -//! -//! ```toml -//! [dependencies] -//! backtrace = "0.3" -//! ``` -//! -//! Next: -//! -//! ``` -//! # // Unsafe here so test passes on no_std. -//! # #[cfg(feature = "std")] { -//! backtrace::trace(|frame| { -//! let ip = frame.ip(); -//! let symbol_address = frame.symbol_address(); -//! -//! // Resolve this instruction pointer to a symbol name -//! backtrace::resolve_frame(frame, |symbol| { -//! if let Some(name) = symbol.name() { -//! // ... -//! } -//! if let Some(filename) = symbol.filename() { -//! // ... -//! } -//! }); -//! -//! true // keep going to the next frame -//! }); -//! # } -//! ``` -//! -//! # Backtrace accuracy -//! -//! This crate implements best-effort attempts to get the native backtrace. This -//! is not always guaranteed to work, and some platforms don't return any -//! backtrace at all. If your application requires accurate backtraces then it's -//! recommended to closely evaluate this crate to see whether it's suitable -//! for your use case on your target platforms. -//! -//! Even on supported platforms, there's a number of reasons that backtraces may -//! be less-than-accurate, including but not limited to: -//! -//! * Unwind information may not be available. This crate primarily implements -//! backtraces by unwinding the stack, but not all functions may have -//! unwinding information (e.g. DWARF unwinding information). -//! -//! * Rust code may be compiled without unwinding information for some -//! functions. This can also happen for Rust code compiled with -//! `-Cpanic=abort`. You can remedy this, however, with -//! `-Cforce-unwind-tables` as a compiler option. -//! -//! * Unwind information may be inaccurate or corrupt. In the worst case -//! inaccurate unwind information can lead this library to segfault. In the -//! best case inaccurate information will result in a truncated stack trace. -//! -//! * Backtraces may not report filenames/line numbers correctly due to missing -//! or corrupt debug information. This won't lead to segfaults unlike corrupt -//! unwinding information, but missing or malformed debug information will -//! mean that filenames and line numbers will not be available. This may be -//! because debug information wasn't generated by the compiler, or it's just -//! missing on the filesystem. -//! -//! * Not all platforms are supported. For example there's no way to get a -//! backtrace on WebAssembly at the moment. -//! -//! * Crate features may be disabled. Currently this crate supports using Gimli -//! libbacktrace on non-Windows platforms for reading debuginfo for -//! backtraces. If both crate features are disabled, however, then these -//! platforms will generate a backtrace but be unable to generate symbols for -//! it. -//! -//! In most standard workflows for most standard platforms you generally don't -//! need to worry about these caveats. We'll try to fix ones where we can over -//! time, but otherwise it's important to be aware of the limitations of -//! unwinding-based backtraces! - -#![deny(missing_docs)] -#![no_std] -#![cfg_attr( - all(feature = "std", target_env = "sgx", target_vendor = "fortanix"), - feature(sgx_platform) -)] -#![warn(rust_2018_idioms)] -// When we're building as part of libstd, silence all warnings since they're -// irrelevant as this crate is developed out-of-tree. -#![cfg_attr(backtrace_in_libstd, allow(warnings))] -#![cfg_attr(not(feature = "std"), allow(dead_code))] - -#[cfg(feature = "std")] -#[macro_use] -extern crate std; - -// This is only used for gimli right now, which is only used on some platforms, and miri -// so don't worry if it's unused in other configurations. -#[allow(unused_extern_crates)] -extern crate alloc; - -pub use self::backtrace::{trace_unsynchronized, Frame}; -mod backtrace; - -pub use self::symbolize::resolve_frame_unsynchronized; -pub use self::symbolize::{resolve_unsynchronized, Symbol, SymbolName}; -mod symbolize; - -pub use self::types::BytesOrWideString; -mod types; - -#[cfg(feature = "std")] -pub use self::symbolize::clear_symbol_cache; - -mod print; -pub use print::{BacktraceFmt, BacktraceFrameFmt, PrintFmt}; - -cfg_if::cfg_if! { - if #[cfg(feature = "std")] { - pub use self::backtrace::trace; - pub use self::symbolize::{resolve, resolve_frame}; - pub use self::capture::{Backtrace, BacktraceFrame, BacktraceSymbol}; - mod capture; - } -} - -cfg_if::cfg_if! { - if #[cfg(all(target_env = "sgx", target_vendor = "fortanix", not(feature = "std")))] { - pub use self::backtrace::set_image_base; - } -} - -#[cfg(feature = "std")] -mod lock { - use std::boxed::Box; - use std::cell::Cell; - use std::ptr; - use std::sync::{Mutex, MutexGuard, Once}; - - /// A "Maybe" LockGuard - pub struct LockGuard(Option<MutexGuard<'static, ()>>); - - /// The global lock, lazily allocated on first use - static mut LOCK: *mut Mutex<()> = ptr::null_mut(); - static INIT: Once = Once::new(); - // Whether this thread is the one that holds the lock - thread_local!(static LOCK_HELD: Cell<bool> = const { Cell::new(false) }); - - impl Drop for LockGuard { - fn drop(&mut self) { - // Don't do anything if we're a LockGuard(None) - if self.0.is_some() { - LOCK_HELD.with(|slot| { - // Immediately crash if we somehow aren't the thread holding this lock - assert!(slot.get()); - // We are no longer the thread holding this lock - slot.set(false); - }); - } - // lock implicitly released here, if we're a LockGuard(Some(..)) - } - } - - /// Acquire a partially unsound(!!!) global re-entrant lock over - /// backtrace's internals. - /// - /// That is, this lock can be acquired as many times as you want - /// on a single thread without deadlocking, allowing one thread - /// to acquire exclusive access to the ability to make backtraces. - /// Calls to this locking function are freely sprinkled in every place - /// where that needs to be enforced. - /// - /// - /// # Why - /// - /// This was first introduced to guard uses of Windows' dbghelp API, - /// which isn't threadsafe. It's unclear if other things now rely on - /// this locking. - /// - /// - /// # How - /// - /// The basic idea is to have a single global mutex, and a thread_local - /// boolean saying "yep this is the thread that acquired the mutex". - /// - /// The first time a thread acquires the lock, it is handed a - /// `LockGuard(Some(..))` that will actually release the lock on Drop. - /// All subsequence attempts to lock on the same thread will see - /// that their thread acquired the lock, and get `LockGuard(None)` - /// which will do nothing when dropped. - /// - /// - /// # Safety - /// - /// As long as you only ever assign the returned LockGuard to a freshly - /// declared local variable, it will do its job correctly, as the "first" - /// LockGuard will strictly outlive all subsequent LockGuards and - /// properly release the lock when the thread is done with backtracing. - /// - /// However if you ever attempt to store a LockGuard beyond the scope - /// it was acquired in, it might actually be a `LockGuard(None)` that - /// doesn't actually hold the lock! In this case another thread might - /// acquire the lock and you'll get races this system was intended to - /// avoid! - /// - /// This is why this is "partially unsound". As a public API this would - /// be unacceptable, but this is crate-private, and if you use this in - /// the most obvious and simplistic way it Just Works™. - /// - /// Note however that std specifically bypasses this lock, and uses - /// the `*_unsynchronized` backtrace APIs. This is "fine" because - /// it wraps its own calls to backtrace in a non-reentrant Mutex - /// that prevents two backtraces from getting interleaved during printing. - pub fn lock() -> LockGuard { - // If we're the thread holding this lock, pretend to acquire the lock - // again by returning a LockGuard(None) - if LOCK_HELD.with(|l| l.get()) { - return LockGuard(None); - } - // Insist that we totally are the thread holding the lock - // (our thread will block until we are) - LOCK_HELD.with(|s| s.set(true)); - unsafe { - // lazily allocate the lock if necessary - INIT.call_once(|| { - LOCK = Box::into_raw(Box::new(Mutex::new(()))); - }); - // ok *actually* try to acquire the lock, blocking as necessary - LockGuard(Some((*LOCK).lock().unwrap())) - } - } -} - -#[cfg(all( - windows, - any( - target_env = "msvc", - all(target_env = "gnu", any(target_arch = "x86", target_arch = "arm")) - ), - not(target_vendor = "uwp") -))] -mod dbghelp; -// Auto-generated by windows-bindgen/riddle -#[cfg(any(windows, target_os = "cygwin"))] -mod windows_sys; diff --git a/vendor/backtrace/src/print.rs b/vendor/backtrace/src/print.rs deleted file mode 100644 index 888840ee..00000000 --- a/vendor/backtrace/src/print.rs +++ /dev/null @@ -1,310 +0,0 @@ -#[cfg(feature = "std")] -use super::{BacktraceFrame, BacktraceSymbol}; -use super::{BytesOrWideString, Frame, SymbolName}; -use core::ffi::c_void; -use core::fmt; - -const HEX_WIDTH: usize = 2 + 2 * core::mem::size_of::<usize>(); - -#[cfg(target_os = "fuchsia")] -mod fuchsia; - -/// A formatter for backtraces. -/// -/// This type can be used to print a backtrace regardless of where the backtrace -/// itself comes from. If you have a `Backtrace` type then its `Debug` -/// implementation already uses this printing format. -pub struct BacktraceFmt<'a, 'b> { - fmt: &'a mut fmt::Formatter<'b>, - frame_index: usize, - format: PrintFmt, - print_path: - &'a mut (dyn FnMut(&mut fmt::Formatter<'_>, BytesOrWideString<'_>) -> fmt::Result + 'b), -} - -/// The styles of printing that we can print -#[derive(Copy, Clone, Eq, PartialEq)] -#[non_exhaustive] -pub enum PrintFmt { - /// Prints a terser backtrace which ideally only contains relevant information - Short, - /// Prints a backtrace that contains all possible information - Full, -} - -impl<'a, 'b> BacktraceFmt<'a, 'b> { - /// Create a new `BacktraceFmt` which will write output to the provided - /// `fmt`. - /// - /// The `format` argument will control the style in which the backtrace is - /// printed, and the `print_path` argument will be used to print the - /// `BytesOrWideString` instances of filenames. This type itself doesn't do - /// any printing of filenames, but this callback is required to do so. - pub fn new( - fmt: &'a mut fmt::Formatter<'b>, - format: PrintFmt, - print_path: &'a mut (dyn FnMut(&mut fmt::Formatter<'_>, BytesOrWideString<'_>) -> fmt::Result - + 'b), - ) -> Self { - BacktraceFmt { - fmt, - frame_index: 0, - format, - print_path, - } - } - - /// Prints a preamble for the backtrace about to be printed. - /// - /// This is required on some platforms for backtraces to be fully - /// symbolicated later, and otherwise this should just be the first method - /// you call after creating a `BacktraceFmt`. - pub fn add_context(&mut self) -> fmt::Result { - #[cfg(target_os = "fuchsia")] - fuchsia::print_dso_context(self.fmt)?; - Ok(()) - } - - /// Adds a frame to the backtrace output. - /// - /// This commit returns an RAII instance of a `BacktraceFrameFmt` which can be used - /// to actually print a frame, and on destruction it will increment the - /// frame counter. - pub fn frame(&mut self) -> BacktraceFrameFmt<'_, 'a, 'b> { - BacktraceFrameFmt { - fmt: self, - symbol_index: 0, - } - } - - /// Completes the backtrace output. - /// - /// This is currently a no-op but is added for future compatibility with - /// backtrace formats. - pub fn finish(&mut self) -> fmt::Result { - #[cfg(target_os = "fuchsia")] - fuchsia::finish_context(self.fmt)?; - Ok(()) - } - - /// Inserts a message in the backtrace output. - /// - /// This allows information to be inserted between frames, - /// and won't increment the `frame_index` unlike the `frame` - /// method. - pub fn message(&mut self, msg: &str) -> fmt::Result { - self.fmt.write_str(msg) - } - - /// Return the inner formatter. - /// - /// This is used for writing custom information between frames with `write!` and `writeln!`, - /// and won't increment the `frame_index` unlike the `frame` method. - pub fn formatter(&mut self) -> &mut fmt::Formatter<'b> { - self.fmt - } -} - -/// A formatter for just one frame of a backtrace. -/// -/// This type is created by the `BacktraceFmt::frame` function. -pub struct BacktraceFrameFmt<'fmt, 'a, 'b> { - fmt: &'fmt mut BacktraceFmt<'a, 'b>, - symbol_index: usize, -} - -impl BacktraceFrameFmt<'_, '_, '_> { - /// Prints a `BacktraceFrame` with this frame formatter. - /// - /// This will recursively print all `BacktraceSymbol` instances within the - /// `BacktraceFrame`. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - #[cfg(feature = "std")] - pub fn backtrace_frame(&mut self, frame: &BacktraceFrame) -> fmt::Result { - let symbols = frame.symbols(); - for symbol in symbols { - self.backtrace_symbol(frame, symbol)?; - } - if symbols.is_empty() { - self.print_raw(frame.ip(), None, None, None)?; - } - Ok(()) - } - - /// Prints a `BacktraceSymbol` within a `BacktraceFrame`. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - #[cfg(feature = "std")] - pub fn backtrace_symbol( - &mut self, - frame: &BacktraceFrame, - symbol: &BacktraceSymbol, - ) -> fmt::Result { - self.print_raw_with_column( - frame.ip(), - symbol.name(), - // TODO: this isn't great that we don't end up printing anything - // with non-utf8 filenames. Thankfully almost everything is utf8 so - // this shouldn't be too bad. - symbol - .filename() - .and_then(|p| Some(BytesOrWideString::Bytes(p.to_str()?.as_bytes()))), - symbol.lineno(), - symbol.colno(), - )?; - Ok(()) - } - - /// Prints a raw traced `Frame` and `Symbol`, typically from within the raw - /// callbacks of this crate. - pub fn symbol(&mut self, frame: &Frame, symbol: &super::Symbol) -> fmt::Result { - self.print_raw_with_column( - frame.ip(), - symbol.name(), - symbol.filename_raw(), - symbol.lineno(), - symbol.colno(), - )?; - Ok(()) - } - - /// Adds a raw frame to the backtrace output. - /// - /// This method, unlike the previous, takes the raw arguments in case - /// they're being source from different locations. Note that this may be - /// called multiple times for one frame. - pub fn print_raw( - &mut self, - frame_ip: *mut c_void, - symbol_name: Option<SymbolName<'_>>, - filename: Option<BytesOrWideString<'_>>, - lineno: Option<u32>, - ) -> fmt::Result { - self.print_raw_with_column(frame_ip, symbol_name, filename, lineno, None) - } - - /// Adds a raw frame to the backtrace output, including column information. - /// - /// This method, like the previous, takes the raw arguments in case - /// they're being source from different locations. Note that this may be - /// called multiple times for one frame. - pub fn print_raw_with_column( - &mut self, - frame_ip: *mut c_void, - symbol_name: Option<SymbolName<'_>>, - filename: Option<BytesOrWideString<'_>>, - lineno: Option<u32>, - colno: Option<u32>, - ) -> fmt::Result { - // Fuchsia is unable to symbolize within a process so it has a special - // format which can be used to symbolize later. Print that instead of - // printing addresses in our own format here. - if cfg!(target_os = "fuchsia") { - self.print_raw_fuchsia(frame_ip)?; - } else { - self.print_raw_generic(frame_ip, symbol_name, filename, lineno, colno)?; - } - self.symbol_index += 1; - Ok(()) - } - - #[allow(unused_mut)] - fn print_raw_generic( - &mut self, - frame_ip: *mut c_void, - symbol_name: Option<SymbolName<'_>>, - filename: Option<BytesOrWideString<'_>>, - lineno: Option<u32>, - colno: Option<u32>, - ) -> fmt::Result { - // No need to print "null" frames, it basically just means that the - // system backtrace was a bit eager to trace back super far. - if let PrintFmt::Short = self.fmt.format { - if frame_ip.is_null() { - return Ok(()); - } - } - - // Print the index of the frame as well as the optional instruction - // pointer of the frame. If we're beyond the first symbol of this frame - // though we just print appropriate whitespace. - if self.symbol_index == 0 { - write!(self.fmt.fmt, "{:4}: ", self.fmt.frame_index)?; - if let PrintFmt::Full = self.fmt.format { - write!(self.fmt.fmt, "{frame_ip:HEX_WIDTH$?} - ")?; - } - } else { - write!(self.fmt.fmt, " ")?; - if let PrintFmt::Full = self.fmt.format { - write!(self.fmt.fmt, "{:1$}", "", HEX_WIDTH + 3)?; - } - } - - // Next up write out the symbol name, using the alternate formatting for - // more information if we're a full backtrace. Here we also handle - // symbols which don't have a name, - match (symbol_name, &self.fmt.format) { - (Some(name), PrintFmt::Short) => write!(self.fmt.fmt, "{name:#}")?, - (Some(name), PrintFmt::Full) => write!(self.fmt.fmt, "{name}")?, - (None, _) => write!(self.fmt.fmt, "<unknown>")?, - } - self.fmt.fmt.write_str("\n")?; - - // And last up, print out the filename/line number if they're available. - if let (Some(file), Some(line)) = (filename, lineno) { - self.print_fileline(file, line, colno)?; - } - - Ok(()) - } - - fn print_fileline( - &mut self, - file: BytesOrWideString<'_>, - line: u32, - colno: Option<u32>, - ) -> fmt::Result { - // Filename/line are printed on lines under the symbol name, so print - // some appropriate whitespace to sort of right-align ourselves. - if let PrintFmt::Full = self.fmt.format { - write!(self.fmt.fmt, "{:1$}", "", HEX_WIDTH)?; - } - write!(self.fmt.fmt, " at ")?; - - // Delegate to our internal callback to print the filename and then - // print out the line number. - (self.fmt.print_path)(self.fmt.fmt, file)?; - write!(self.fmt.fmt, ":{line}")?; - - // Add column number, if available. - if let Some(colno) = colno { - write!(self.fmt.fmt, ":{colno}")?; - } - - writeln!(self.fmt.fmt)?; - Ok(()) - } - - fn print_raw_fuchsia(&mut self, frame_ip: *mut c_void) -> fmt::Result { - // We only care about the first symbol of a frame - if self.symbol_index == 0 { - self.fmt.fmt.write_str("{{{bt:")?; - write!(self.fmt.fmt, "{}:{:?}", self.fmt.frame_index, frame_ip)?; - self.fmt.fmt.write_str("}}}\n")?; - } - Ok(()) - } -} - -impl Drop for BacktraceFrameFmt<'_, '_, '_> { - fn drop(&mut self) { - self.fmt.frame_index += 1; - } -} diff --git a/vendor/backtrace/src/print/fuchsia.rs b/vendor/backtrace/src/print/fuchsia.rs deleted file mode 100644 index 01821fd9..00000000 --- a/vendor/backtrace/src/print/fuchsia.rs +++ /dev/null @@ -1,441 +0,0 @@ -use core::fmt::{self, Write}; -use core::mem::{size_of, transmute}; -use core::slice::from_raw_parts; -use libc::c_char; - -unsafe extern "C" { - // dl_iterate_phdr takes a callback that will receive a dl_phdr_info pointer - // for every DSO that has been linked into the process. dl_iterate_phdr also - // ensures that the dynamic linker is locked from start to finish of the - // iteration. If the callback returns a non-zero value the iteration is - // terminated early. 'data' will be passed as the third argument to the - // callback on each call. 'size' gives the size of the dl_phdr_info. - #[allow(improper_ctypes)] - fn dl_iterate_phdr( - f: extern "C" fn(info: &dl_phdr_info, size: usize, data: &mut DsoPrinter<'_, '_>) -> i32, - data: &mut DsoPrinter<'_, '_>, - ) -> i32; -} - -// We need to parse out the build ID and some basic program header data -// which means that we need a bit of stuff from the ELF spec as well. - -const PT_LOAD: u32 = 1; -const PT_NOTE: u32 = 4; - -// Now we have to replicate, bit for bit, the structure of the dl_phdr_info -// type used by fuchsia's current dynamic linker. Chromium also has this ABI -// boundary as well as crashpad. Eventually we'd like to move these cases to -// use elf-search but we'd need to provide that in the SDK and that has not -// yet been done. Thus we (and they) are stuck having to use this method -// which incurs a tight coupling with the fuchsia libc. - -#[allow(non_camel_case_types)] -#[repr(C)] -struct dl_phdr_info { - addr: *const u8, - name: *const c_char, - phdr: *const Elf_Phdr, - phnum: u16, - adds: u64, - subs: u64, - tls_modid: usize, - tls_data: *const u8, -} - -impl dl_phdr_info { - fn program_headers(&self) -> PhdrIter<'_> { - PhdrIter { - phdrs: self.phdr_slice(), - base: self.addr, - } - } - // We have no way of knowing of checking if e_phoff and e_phnum are valid. - // libc should ensure this for us however so it's safe to form a slice here. - fn phdr_slice(&self) -> &[Elf_Phdr] { - unsafe { from_raw_parts(self.phdr, self.phnum as usize) } - } -} - -struct PhdrIter<'a> { - phdrs: &'a [Elf_Phdr], - base: *const u8, -} - -impl<'a> Iterator for PhdrIter<'a> { - type Item = Phdr<'a>; - fn next(&mut self) -> Option<Self::Item> { - self.phdrs.split_first().map(|(phdr, new_phdrs)| { - self.phdrs = new_phdrs; - Phdr { - phdr, - base: self.base, - } - }) - } -} - -// Elf_Phdr represents a 64-bit ELF program header in the endianness of the target -// architecture. -#[allow(non_camel_case_types)] -#[derive(Clone, Debug)] -#[repr(C)] -struct Elf_Phdr { - p_type: u32, - p_flags: u32, - p_offset: u64, - p_vaddr: u64, - p_paddr: u64, - p_filesz: u64, - p_memsz: u64, - p_align: u64, -} - -// Phdr represents a valid ELF program header and its contents. -struct Phdr<'a> { - phdr: &'a Elf_Phdr, - base: *const u8, -} - -impl<'a> Phdr<'a> { - // We have no way of checking if p_addr or p_memsz are valid. Fuchsia's libc - // parses the notes first however so by virtue of being here these headers - // must be valid. NoteIter does not require the underlying data to be valid - // but it does require the bounds to be valid. We trust that libc has ensured - // that this is the case for us here. - fn notes(&self) -> NoteIter<'a> { - unsafe { - NoteIter::new( - self.base.add(self.phdr.p_offset as usize), - self.phdr.p_memsz as usize, - ) - } - } -} - -// The note type for build IDs. -const NT_GNU_BUILD_ID: u32 = 3; - -// Elf_Nhdr represents an ELF note header in the endianness of the target. -#[allow(non_camel_case_types)] -#[repr(C)] -struct Elf_Nhdr { - n_namesz: u32, - n_descsz: u32, - n_type: u32, -} - -// Note represents an ELF note (header + contents). The name is left as a u8 -// slice because it is not always null terminated and rust makes it easy enough -// to check that the bytes match eitherway. -struct Note<'a> { - name: &'a [u8], - desc: &'a [u8], - tipe: u32, -} - -// NoteIter lets you safely iterate over a note segment. It terminates as soon -// as an error occurs or there are no more notes. If you iterate over invalid -// data it will function as though no notes were found. -struct NoteIter<'a> { - base: &'a [u8], - error: bool, -} - -impl<'a> NoteIter<'a> { - // It is an invariant of function that the pointer and size given denote a - // valid range of bytes that can all be read. The contents of these bytes - // can be anything but the range must be valid for this to be safe. - unsafe fn new(base: *const u8, size: usize) -> Self { - NoteIter { - base: unsafe { from_raw_parts(base, size) }, - error: false, - } - } -} - -// align_to aligns 'x' to 'to'-byte alignment assuming 'to' is a power of 2. -// This follows a standard pattern in C/C++ ELF parsing code where -// (x + to - 1) & -to is used. Rust does not let you negate usize so I use -// 2's-complement conversion to recreate that. -fn align_to(x: usize, to: usize) -> usize { - (x + to - 1) & (!to + 1) -} - -// take_bytes_align4 consumes num bytes from the slice (if present) and -// additionally ensures that the final slice is properlly aligned. If an -// either the number of bytes requested is too large or the slice can't be -// realigned afterwards due to not enough remaining bytes existing, None is -// returned and the slice is not modified. -fn take_bytes_align4<'a>(num: usize, bytes: &mut &'a [u8]) -> Option<&'a [u8]> { - if bytes.len() < align_to(num, 4) { - return None; - } - let (out, bytes_new) = bytes.split_at(num); - *bytes = &bytes_new[align_to(num, 4) - num..]; - Some(out) -} - -// This function has no real invariants the caller must uphold other than -// perhaps that 'bytes' should be aligned for performance (and on some -// architectures correctness). The values in the Elf_Nhdr fields might -// be nonsense but this function ensures no such thing. -fn take_nhdr<'a>(bytes: &mut &'a [u8]) -> Option<&'a Elf_Nhdr> { - if size_of::<Elf_Nhdr>() > bytes.len() { - return None; - } - // This is safe as long as there is enough space and we just confirmed that - // in the if statement above so this should not be unsafe. - let out = unsafe { transmute::<*const u8, &'a Elf_Nhdr>(bytes.as_ptr()) }; - // Note that sice_of::<Elf_Nhdr>() is always 4-byte aligned. - *bytes = &bytes[size_of::<Elf_Nhdr>()..]; - Some(out) -} - -impl<'a> Iterator for NoteIter<'a> { - type Item = Note<'a>; - fn next(&mut self) -> Option<Self::Item> { - // Check if we've reached the end. - if self.base.is_empty() || self.error { - return None; - } - // We transmute out an nhdr but we carefully consider the resulting - // struct. We don't trust the namesz or descsz and we make no unsafe - // decisions based on the type. So even if we get out complete garbage - // we should still be safe. - let nhdr = take_nhdr(&mut self.base)?; - let name = take_bytes_align4(nhdr.n_namesz as usize, &mut self.base)?; - let desc = take_bytes_align4(nhdr.n_descsz as usize, &mut self.base)?; - Some(Note { - name: name, - desc: desc, - tipe: nhdr.n_type, - }) - } -} - -struct Perm(u32); - -/// Indicates that a segment is executable. -const PERM_X: u32 = 0b00000001; -/// Indicates that a segment is writable. -const PERM_W: u32 = 0b00000010; -/// Indicates that a segment is readable. -const PERM_R: u32 = 0b00000100; - -impl core::fmt::Display for Perm { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - let v = self.0; - if v & PERM_R != 0 { - f.write_char('r')? - } - if v & PERM_W != 0 { - f.write_char('w')? - } - if v & PERM_X != 0 { - f.write_char('x')? - } - Ok(()) - } -} - -/// Represents an ELF segment at runtime. -struct Segment { - /// Gives the runtime virtual address of this segment's contents. - addr: usize, - /// Gives the memory size of this segment's contents. - size: usize, - /// Gives the module virtual address of this segment with the ELF file. - mod_rel_addr: usize, - /// Gives the permissions found in the ELF file. These permissions are not - /// necessarily the permissions present at runtime however. - flags: Perm, -} - -/// Lets one iterate over Segments from a DSO. -struct SegmentIter<'a> { - phdrs: &'a [Elf_Phdr], - base: usize, -} - -impl Iterator for SegmentIter<'_> { - type Item = Segment; - - fn next(&mut self) -> Option<Self::Item> { - self.phdrs.split_first().and_then(|(phdr, new_phdrs)| { - self.phdrs = new_phdrs; - if phdr.p_type != PT_LOAD { - self.next() - } else { - Some(Segment { - addr: phdr.p_vaddr as usize + self.base, - size: phdr.p_memsz as usize, - mod_rel_addr: phdr.p_vaddr as usize, - flags: Perm(phdr.p_flags), - }) - } - }) - } -} - -/// Represents an ELF DSO (Dynamic Shared Object). This type references -/// the data stored in the actual DSO rather than making its own copy. -struct Dso<'a> { - /// The dynamic linker always gives us a name, even if the name is empty. - /// In the case of the main executable this name will be empty. In the case - /// of a shared object it will be the soname (see DT_SONAME). - name: &'a str, - /// On Fuchsia virtually all binaries have build IDs but this is not a strict - /// requirement. There's no way to match up DSO information with a real ELF - /// file afterwards if there is no build_id so we require that every DSO - /// have one here. DSO's without a build_id are ignored. - build_id: &'a [u8], - - base: usize, - phdrs: &'a [Elf_Phdr], -} - -impl Dso<'_> { - /// Returns an iterator over Segments in this DSO. - fn segments(&self) -> SegmentIter<'_> { - SegmentIter { - phdrs: self.phdrs.as_ref(), - base: self.base, - } - } -} - -struct HexSlice<'a> { - bytes: &'a [u8], -} - -impl fmt::Display for HexSlice<'_> { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - for byte in self.bytes { - write!(f, "{byte:02x}")?; - } - Ok(()) - } -} - -fn get_build_id<'a>(info: &'a dl_phdr_info) -> Option<&'a [u8]> { - for phdr in info.program_headers() { - if phdr.phdr.p_type == PT_NOTE { - for note in phdr.notes() { - if note.tipe == NT_GNU_BUILD_ID && (note.name == b"GNU\0" || note.name == b"GNU") { - return Some(note.desc); - } - } - } - } - None -} - -/// These errors encode issues that arise while parsing information about -/// each DSO. -enum Error { - /// NameError means that an error occurred while converting a C style string - /// into a rust string. - NameError, - /// BuildIDError means that we didn't find a build ID. This could either be - /// because the DSO had no build ID or because the segment containing the - /// build ID was malformed. - BuildIDError, -} - -/// Calls either 'dso' or 'error' for each DSO linked into the process by the -/// dynamic linker. -/// -/// # Arguments -/// -/// * `visitor` - A DsoPrinter that will have one of eats methods called foreach DSO. -fn for_each_dso(mut visitor: &mut DsoPrinter<'_, '_>) { - extern "C" fn callback( - info: &dl_phdr_info, - _size: usize, - visitor: &mut DsoPrinter<'_, '_>, - ) -> i32 { - // dl_iterate_phdr ensures that info.name will point to a valid - // location. - let name_len = unsafe { libc::strlen(info.name) }; - let name_slice: &[u8] = - unsafe { core::slice::from_raw_parts(info.name.cast::<u8>(), name_len) }; - let name = match core::str::from_utf8(name_slice) { - Ok(name) => name, - Err(_) => { - return visitor.error(Error::NameError) as i32; - } - }; - let build_id = match get_build_id(info) { - Some(build_id) => build_id, - None => { - return visitor.error(Error::BuildIDError) as i32; - } - }; - visitor.dso(Dso { - name: name, - build_id: build_id, - phdrs: info.phdr_slice(), - base: info.addr as usize, - }) as i32 - } - unsafe { dl_iterate_phdr(callback, &mut visitor) }; -} - -struct DsoPrinter<'a, 'b> { - writer: &'a mut core::fmt::Formatter<'b>, - module_count: usize, - error: core::fmt::Result, -} - -impl DsoPrinter<'_, '_> { - fn dso(&mut self, dso: Dso<'_>) -> bool { - let mut write = || { - write!( - self.writer, - "{{{{{{module:{:#x}:{}:elf:{}}}}}}}\n", - self.module_count, - dso.name, - HexSlice { - bytes: dso.build_id.as_ref() - } - )?; - for seg in dso.segments() { - write!( - self.writer, - "{{{{{{mmap:{:#x}:{:#x}:load:{:#x}:{}:{:#x}}}}}}}\n", - seg.addr, seg.size, self.module_count, seg.flags, seg.mod_rel_addr - )?; - } - self.module_count += 1; - Ok(()) - }; - match write() { - Ok(()) => false, - Err(err) => { - self.error = Err(err); - true - } - } - } - fn error(&mut self, _error: Error) -> bool { - false - } -} - -/// This function prints the Fuchsia symbolizer markup for all information contained in a DSO. -pub fn print_dso_context(out: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { - out.write_str("{{{reset:begin}}}\n")?; - let mut visitor = DsoPrinter { - writer: out, - module_count: 0, - error: Ok(()), - }; - for_each_dso(&mut visitor); - visitor.error -} - -/// This function prints the Fuchsia symbolizer markup to end the backtrace. -pub fn finish_context(out: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { - out.write_str("{{{reset:end}}}\n") -} diff --git a/vendor/backtrace/src/symbolize/dbghelp.rs b/vendor/backtrace/src/symbolize/dbghelp.rs deleted file mode 100644 index d3b688f8..00000000 --- a/vendor/backtrace/src/symbolize/dbghelp.rs +++ /dev/null @@ -1,317 +0,0 @@ -//! Symbolication strategy using `dbghelp.dll` on Windows, only used for MSVC -//! -//! This symbolication strategy, like with backtraces, uses dynamically loaded -//! information from `dbghelp.dll`. (see `src/dbghelp.rs` for info about why -//! it's dynamically loaded). -//! -//! This API selects its resolution strategy based on the frame provided or the -//! information we have at hand. If a frame from `StackWalkEx` is given to us -//! then we use similar APIs to generate correct information about inlined -//! functions. Otherwise if all we have is an address or an older stack frame -//! from `StackWalk64` we use the older APIs for symbolication. -//! -//! There's a good deal of support in this module, but a good chunk of it is -//! converting back and forth between Windows types and Rust types. For example -//! symbols come to us as wide strings which we then convert to utf-8 strings if -//! we can. - -#![allow(bad_style)] - -use super::super::{dbghelp, windows_sys::*}; -use super::{BytesOrWideString, ResolveWhat, SymbolName}; -use core::ffi::c_void; -use core::marker; -use core::mem; -use core::ptr; -use core::slice; - -// FIXME: replace with ptr::from_ref once MSRV is high enough -#[inline(always)] -#[must_use] -const fn ptr_from_ref<T: ?Sized>(r: &T) -> *const T { - r -} - -// Store an OsString on std so we can provide the symbol name and filename. -pub struct Symbol<'a> { - name: *const [u8], - addr: *mut c_void, - line: Option<u32>, - filename: Option<*const [u16]>, - #[cfg(feature = "std")] - _filename_cache: Option<::std::ffi::OsString>, - #[cfg(not(feature = "std"))] - _filename_cache: (), - _marker: marker::PhantomData<&'a i32>, -} - -impl Symbol<'_> { - pub fn name(&self) -> Option<SymbolName<'_>> { - Some(SymbolName::new(unsafe { &*self.name })) - } - - pub fn addr(&self) -> Option<*mut c_void> { - Some(self.addr) - } - - pub fn filename_raw(&self) -> Option<BytesOrWideString<'_>> { - self.filename - .map(|slice| unsafe { BytesOrWideString::Wide(&*slice) }) - } - - pub fn colno(&self) -> Option<u32> { - None - } - - pub fn lineno(&self) -> Option<u32> { - self.line - } - - #[cfg(feature = "std")] - pub fn filename(&self) -> Option<&::std::path::Path> { - use std::path::Path; - - self._filename_cache.as_ref().map(Path::new) - } -} - -#[repr(C, align(8))] -struct Aligned8<T>(T); - -#[cfg(not(target_vendor = "win7"))] -pub unsafe fn resolve(what: ResolveWhat<'_>, cb: &mut dyn FnMut(&super::Symbol)) { - // Ensure this process's symbols are initialized - let dbghelp = match dbghelp::init() { - Ok(dbghelp) => dbghelp, - Err(()) => return, // oh well... - }; - unsafe { - match what { - ResolveWhat::Address(_) => { - resolve_with_inline(&dbghelp, what.address_or_ip(), None, cb) - } - ResolveWhat::Frame(frame) => { - resolve_with_inline(&dbghelp, frame.ip(), frame.inner.inline_context(), cb) - } - }; - } -} - -#[cfg(target_vendor = "win7")] -pub unsafe fn resolve(what: ResolveWhat<'_>, cb: &mut dyn FnMut(&super::Symbol)) { - // Ensure this process's symbols are initialized - let dbghelp = match dbghelp::init() { - Ok(dbghelp) => dbghelp, - Err(()) => return, // oh well... - }; - - unsafe { - let resolve_inner = if (*dbghelp.dbghelp()).SymAddrIncludeInlineTrace().is_some() { - // We are on a version of dbghelp 6.2+, which contains the more modern - // Inline APIs. - resolve_with_inline - } else { - // We are on an older version of dbghelp which doesn't contain the Inline - // APIs. - resolve_legacy - }; - match what { - ResolveWhat::Address(_) => resolve_inner(&dbghelp, what.address_or_ip(), None, cb), - ResolveWhat::Frame(frame) => { - resolve_inner(&dbghelp, frame.ip(), frame.inner.inline_context(), cb) - } - }; - } -} - -/// Resolve the address using the legacy dbghelp API. -/// -/// This should work all the way down to Windows XP. The inline context is -/// ignored, since this concept was only introduced in dbghelp 6.2+. -#[cfg(target_vendor = "win7")] -unsafe fn resolve_legacy( - dbghelp: &dbghelp::Init, - addr: *mut c_void, - _inline_context: Option<u32>, - cb: &mut dyn FnMut(&super::Symbol), -) -> Option<()> { - let addr = super::adjust_ip(addr) as u64; - unsafe { - do_resolve( - |info| dbghelp.SymFromAddrW()(GetCurrentProcess(), addr, &mut 0, info), - |line| dbghelp.SymGetLineFromAddrW64()(GetCurrentProcess(), addr, &mut 0, line), - cb, - ); - } - Some(()) -} - -/// Resolve the address using the modern dbghelp APIs. -/// -/// Note that calling this function requires having dbghelp 6.2+ loaded - and -/// will panic otherwise. -unsafe fn resolve_with_inline( - dbghelp: &dbghelp::Init, - addr: *mut c_void, - inline_context: Option<u32>, - cb: &mut dyn FnMut(&super::Symbol), -) -> Option<()> { - unsafe { - let current_process = GetCurrentProcess(); - // Ensure we have the functions we need. Return if any aren't found. - let SymFromInlineContextW = (*dbghelp.dbghelp()).SymFromInlineContextW()?; - let SymGetLineFromInlineContextW = (*dbghelp.dbghelp()).SymGetLineFromInlineContextW()?; - - let addr = super::adjust_ip(addr) as u64; - - let (inlined_frame_count, inline_context) = if let Some(ic) = inline_context { - (0, ic) - } else { - let SymAddrIncludeInlineTrace = (*dbghelp.dbghelp()).SymAddrIncludeInlineTrace()?; - let SymQueryInlineTrace = (*dbghelp.dbghelp()).SymQueryInlineTrace()?; - - let mut inlined_frame_count = SymAddrIncludeInlineTrace(current_process, addr); - - let mut inline_context = 0; - - // If there is are inlined frames but we can't load them for some reason OR if there are no - // inlined frames, then we disregard inlined_frame_count and inline_context. - if (inlined_frame_count > 0 - && SymQueryInlineTrace( - current_process, - addr, - 0, - addr, - addr, - &mut inline_context, - &mut 0, - ) != TRUE) - || inlined_frame_count == 0 - { - inlined_frame_count = 0; - inline_context = 0; - } - - (inlined_frame_count, inline_context) - }; - - let last_inline_context = inline_context + 1 + inlined_frame_count; - - for inline_context in inline_context..last_inline_context { - do_resolve( - |info| SymFromInlineContextW(current_process, addr, inline_context, &mut 0, info), - |line| { - SymGetLineFromInlineContextW( - current_process, - addr, - inline_context, - 0, - &mut 0, - line, - ) - }, - cb, - ); - } - } - Some(()) -} - -unsafe fn do_resolve( - sym_from_addr: impl FnOnce(*mut SYMBOL_INFOW) -> BOOL, - get_line_from_addr: impl FnOnce(&mut IMAGEHLP_LINEW64) -> BOOL, - cb: &mut dyn FnMut(&super::Symbol), -) { - const SIZE: usize = 2 * MAX_SYM_NAME as usize + mem::size_of::<SYMBOL_INFOW>(); - let mut data = Aligned8([0u8; SIZE]); - let info = unsafe { &mut *data.0.as_mut_ptr().cast::<SYMBOL_INFOW>() }; - info.MaxNameLen = MAX_SYM_NAME as u32; - // the struct size in C. the value is different to - // `size_of::<SYMBOL_INFOW>() - MAX_SYM_NAME + 1` (== 81) - // due to struct alignment. - info.SizeOfStruct = 88; - - if sym_from_addr(info) != TRUE { - return; - } - - // If the symbol name is greater than MaxNameLen, SymFromAddrW will - // give a buffer of (MaxNameLen - 1) characters and set NameLen to - // the real value. - let name_len = ::core::cmp::min(info.NameLen as usize, info.MaxNameLen as usize - 1); - let name_ptr = info.Name.as_ptr().cast::<u16>(); - - // Reencode the utf-16 symbol to utf-8 so we can use `SymbolName::new` like - // all other platforms - let mut name_buffer = [0_u8; 256]; - let mut name_len = unsafe { - WideCharToMultiByte( - CP_UTF8, - 0, - name_ptr, - name_len as i32, - name_buffer.as_mut_ptr(), - name_buffer.len() as i32, - core::ptr::null_mut(), - core::ptr::null_mut(), - ) as usize - }; - if name_len == 0 { - // If the returned length is zero that means the buffer wasn't big enough. - // However, the buffer will be filled with as much as will fit. - name_len = name_buffer.len(); - } else if name_len > name_buffer.len() { - // This can't happen. - return; - } - let name = ptr::addr_of!(name_buffer[..name_len]); - - let mut line = IMAGEHLP_LINEW64 { - SizeOfStruct: 0, - Key: core::ptr::null_mut(), - LineNumber: 0, - FileName: core::ptr::null_mut(), - Address: 0, - }; - line.SizeOfStruct = mem::size_of::<IMAGEHLP_LINEW64>() as u32; - - let mut filename = None; - let mut lineno = None; - if get_line_from_addr(&mut line) == TRUE { - lineno = Some(line.LineNumber); - - let base = line.FileName; - let mut len = 0; - while unsafe { *base.offset(len) != 0 } { - len += 1; - } - - let len = len as usize; - - unsafe { - filename = Some(ptr_from_ref(slice::from_raw_parts(base, len))); - } - } - - cb(&super::Symbol { - inner: Symbol { - name, - addr: info.Address as *mut _, - line: lineno, - filename, - _filename_cache: unsafe { cache(filename) }, - _marker: marker::PhantomData, - }, - }) -} - -#[cfg(feature = "std")] -unsafe fn cache(filename: Option<*const [u16]>) -> Option<::std::ffi::OsString> { - use std::os::windows::ffi::OsStringExt; - unsafe { filename.map(|f| ::std::ffi::OsString::from_wide(&*f)) } -} - -#[cfg(not(feature = "std"))] -unsafe fn cache(_filename: Option<*const [u16]>) {} - -pub unsafe fn clear_symbol_cache() {} diff --git a/vendor/backtrace/src/symbolize/gimli.rs b/vendor/backtrace/src/symbolize/gimli.rs deleted file mode 100644 index 19756c17..00000000 --- a/vendor/backtrace/src/symbolize/gimli.rs +++ /dev/null @@ -1,563 +0,0 @@ -//! Support for symbolication using the `gimli` crate on crates.io -//! -//! This is the default symbolication implementation for Rust. - -use self::gimli::read::EndianSlice; -use self::gimli::NativeEndian as Endian; -use self::mmap::Mmap; -use self::stash::Stash; -use super::BytesOrWideString; -use super::ResolveWhat; -use super::SymbolName; -use addr2line::gimli; -use core::convert::TryInto; -use core::mem; -use libc::c_void; -use mystd::ffi::OsString; -use mystd::fs::File; -use mystd::path::Path; -use mystd::prelude::v1::*; - -#[cfg(backtrace_in_libstd)] -mod mystd { - pub use crate::*; -} -#[cfg(not(backtrace_in_libstd))] -extern crate std as mystd; - -cfg_if::cfg_if! { - if #[cfg(windows)] { - #[path = "gimli/mmap_windows.rs"] - mod mmap; - } else if #[cfg(target_vendor = "apple")] { - #[path = "gimli/mmap_unix.rs"] - mod mmap; - } else if #[cfg(any( - target_os = "android", - target_os = "freebsd", - target_os = "fuchsia", - target_os = "haiku", - target_os = "hurd", - target_os = "linux", - target_os = "openbsd", - target_os = "solaris", - target_os = "illumos", - target_os = "aix", - target_os = "cygwin", - ))] { - #[path = "gimli/mmap_unix.rs"] - mod mmap; - } else { - #[path = "gimli/mmap_fake.rs"] - mod mmap; - } -} - -mod lru; -mod stash; - -use lru::Lru; - -const MAPPINGS_CACHE_SIZE: usize = 4; - -struct Mapping { - // 'static lifetime is a lie to hack around lack of support for self-referential structs. - cx: Context<'static>, - _map: Mmap, - stash: Stash, -} - -enum Either<A, B> { - #[allow(dead_code)] - A(A), - B(B), -} - -impl Mapping { - /// Creates a `Mapping` by ensuring that the `data` specified is used to - /// create a `Context` and it can only borrow from that or the `Stash` of - /// decompressed sections or auxiliary data. - fn mk<F>(data: Mmap, mk: F) -> Option<Mapping> - where - F: for<'a> FnOnce(&'a [u8], &'a Stash) -> Option<Context<'a>>, - { - Mapping::mk_or_other(data, move |data, stash| { - let cx = mk(data, stash)?; - Some(Either::B(cx)) - }) - } - - /// Creates a `Mapping` from `data`, or if the closure decides to, returns a - /// different mapping. - fn mk_or_other<F>(data: Mmap, mk: F) -> Option<Mapping> - where - F: for<'a> FnOnce(&'a [u8], &'a Stash) -> Option<Either<Mapping, Context<'a>>>, - { - let stash = Stash::new(); - let cx = match mk(&data, &stash)? { - Either::A(mapping) => return Some(mapping), - Either::B(cx) => cx, - }; - Some(Mapping { - // Convert to 'static lifetimes since the symbols should - // only borrow `map` and `stash` and we're preserving them below. - cx: unsafe { core::mem::transmute::<Context<'_>, Context<'static>>(cx) }, - _map: data, - stash, - }) - } -} - -struct Context<'a> { - dwarf: addr2line::Context<EndianSlice<'a, Endian>>, - object: Object<'a>, - package: Option<gimli::DwarfPackage<EndianSlice<'a, Endian>>>, -} - -impl<'data> Context<'data> { - fn new( - stash: &'data Stash, - object: Object<'data>, - sup: Option<Object<'data>>, - dwp: Option<Object<'data>>, - ) -> Option<Context<'data>> { - let mut sections = gimli::Dwarf::load(|id| -> Result<_, ()> { - if cfg!(not(target_os = "aix")) { - let data = object.section(stash, id.name()).unwrap_or(&[]); - Ok(EndianSlice::new(data, Endian)) - } else if let Some(name) = id.xcoff_name() { - let data = object.section(stash, name).unwrap_or(&[]); - Ok(EndianSlice::new(data, Endian)) - } else { - Ok(EndianSlice::new(&[], Endian)) - } - }) - .ok()?; - - if let Some(sup) = sup { - sections - .load_sup(|id| -> Result<_, ()> { - let data = sup.section(stash, id.name()).unwrap_or(&[]); - Ok(EndianSlice::new(data, Endian)) - }) - .ok()?; - } - let dwarf = addr2line::Context::from_dwarf(sections).ok()?; - - let mut package = None; - if let Some(dwp) = dwp { - package = Some( - gimli::DwarfPackage::load( - |id| -> Result<_, gimli::Error> { - let data = id - .dwo_name() - .and_then(|name| dwp.section(stash, name)) - .unwrap_or(&[]); - Ok(EndianSlice::new(data, Endian)) - }, - EndianSlice::new(&[], Endian), - ) - .ok()?, - ); - } - - Some(Context { - dwarf, - object, - package, - }) - } - - fn find_frames( - &'_ self, - stash: &'data Stash, - probe: u64, - ) -> gimli::Result<addr2line::FrameIter<'_, EndianSlice<'data, Endian>>> { - use addr2line::{LookupContinuation, LookupResult}; - - let mut l = self.dwarf.find_frames(probe); - loop { - let (load, continuation) = match l { - LookupResult::Output(output) => break output, - LookupResult::Load { load, continuation } => (load, continuation), - }; - - l = continuation.resume(handle_split_dwarf(self.package.as_ref(), stash, load)); - } - } -} - -fn mmap(path: &Path) -> Option<Mmap> { - let file = File::open(path).ok()?; - let len = file.metadata().ok()?.len().try_into().ok()?; - unsafe { Mmap::map(&file, len, 0) } -} - -cfg_if::cfg_if! { - if #[cfg(any(windows, target_os = "cygwin"))] { - mod coff; - use self::coff::{handle_split_dwarf, Object}; - } else if #[cfg(any(target_vendor = "apple"))] { - mod macho; - use self::macho::{handle_split_dwarf, Object}; - } else if #[cfg(target_os = "aix")] { - mod xcoff; - use self::xcoff::{handle_split_dwarf, Object}; - } else { - mod elf; - use self::elf::{handle_split_dwarf, Object}; - } -} - -cfg_if::cfg_if! { - if #[cfg(any(windows, target_os = "cygwin"))] { - mod libs_windows; - use libs_windows::native_libraries; - } else if #[cfg(target_vendor = "apple")] { - mod libs_macos; - use libs_macos::native_libraries; - } else if #[cfg(target_os = "illumos")] { - mod libs_illumos; - use libs_illumos::native_libraries; - } else if #[cfg(all( - any( - target_os = "linux", - target_os = "fuchsia", - target_os = "freebsd", - target_os = "hurd", - target_os = "openbsd", - target_os = "netbsd", - target_os = "nto", - target_os = "android", - ), - not(target_env = "uclibc"), - ))] { - mod libs_dl_iterate_phdr; - use libs_dl_iterate_phdr::native_libraries; - #[path = "gimli/parse_running_mmaps_unix.rs"] - mod parse_running_mmaps; - } else if #[cfg(target_env = "libnx")] { - mod libs_libnx; - use libs_libnx::native_libraries; - } else if #[cfg(target_os = "haiku")] { - mod libs_haiku; - use libs_haiku::native_libraries; - } else if #[cfg(target_os = "aix")] { - mod libs_aix; - use libs_aix::native_libraries; - } else { - // Everything else should doesn't know how to load native libraries. - fn native_libraries() -> Vec<Library> { - Vec::new() - } - } -} - -#[derive(Default)] -struct Cache { - /// All known shared libraries that have been loaded. - libraries: Vec<Library>, - - /// Mappings cache where we retain parsed dwarf information. - /// - /// This list has a fixed capacity for its entire lifetime which never - /// increases. The `usize` element of each pair is an index into `libraries` - /// above where `usize::max_value()` represents the current executable. The - /// `Mapping` is corresponding parsed dwarf information. - /// - /// Note that this is basically an LRU cache and we'll be shifting things - /// around in here as we symbolize addresses. - mappings: Lru<(usize, Mapping), MAPPINGS_CACHE_SIZE>, -} - -struct Library { - name: OsString, - #[cfg(target_os = "android")] - /// On Android, the dynamic linker [can map libraries directly from a - /// ZIP archive][ndk-linker-changes] (typically an `.apk`). - /// - /// The linker requires that these libraries are stored uncompressed - /// and page-aligned. - /// - /// These "embedded" libraries have filepaths of the form - /// `/path/to/my.apk!/lib/mylib.so` (where `/path/to/my.apk` is the archive - /// and `lib/mylib.so` is the name of the library within the archive). - /// - /// This mechanism is present on Android since API level 23. - /// - /// [ndk-linker-changes]: https://android.googlesource.com/platform/bionic/+/main/android-changes-for-ndk-developers.md#opening-shared-libraries-directly-from-an-apk - zip_offset: Option<u64>, - #[cfg(target_os = "aix")] - /// On AIX, the library mmapped can be a member of a big-archive file. - /// For example, with a big-archive named libfoo.a containing libbar.so, - /// one can use `dlopen("libfoo.a(libbar.so)", RTLD_MEMBER | RTLD_LAZY)` - /// to use the `libbar.so` library. In this case, only `libbar.so` is - /// mmapped, not the whole `libfoo.a`. - member_name: OsString, - /// Segments of this library loaded into memory, and where they're loaded. - segments: Vec<LibrarySegment>, - /// The "bias" of this library, typically where it's loaded into memory. - /// This value is added to each segment's stated address to get the actual - /// virtual memory address that the segment is loaded into. Additionally - /// this bias is subtracted from real virtual memory addresses to index into - /// debuginfo and the symbol table. - bias: usize, -} - -struct LibrarySegment { - /// The stated address of this segment in the object file. This is not - /// actually where the segment is loaded, but rather this address plus the - /// containing library's `bias` is where to find it. - stated_virtual_memory_address: usize, - /// The size of this segment in memory. - len: usize, -} - -fn create_mapping(lib: &Library) -> Option<Mapping> { - cfg_if::cfg_if! { - if #[cfg(target_os = "aix")] { - Mapping::new(lib.name.as_ref(), &lib.member_name) - } else if #[cfg(target_os = "android")] { - Mapping::new_android(lib.name.as_ref(), lib.zip_offset) - } else { - Mapping::new(lib.name.as_ref()) - } - } -} - -/// Try to extract the archive path from an "embedded" library path -/// (e.g. `/path/to/my.apk` from `/path/to/my.apk!/mylib.so`). -/// -/// Returns `None` if the path does not contain a `!/` separator. -#[cfg(target_os = "android")] -fn extract_zip_path_android(path: &mystd::ffi::OsStr) -> Option<&mystd::ffi::OsStr> { - use mystd::os::unix::ffi::OsStrExt; - - path.as_bytes() - .windows(2) - .enumerate() - .find(|(_, chunk)| chunk == b"!/") - .map(|(index, _)| mystd::ffi::OsStr::from_bytes(path.as_bytes().split_at(index).0)) -} - -// unsafe because this is required to be externally synchronized -pub unsafe fn clear_symbol_cache() { - unsafe { - Cache::with_global(|cache| cache.mappings.clear()); - } -} - -impl Cache { - fn new() -> Cache { - Cache { - mappings: Lru::default(), - libraries: native_libraries(), - } - } - - // unsafe because this is required to be externally synchronized - unsafe fn with_global(f: impl FnOnce(&mut Self)) { - // A very small, very simple LRU cache for debug info mappings. - // - // The hit rate should be very high, since the typical stack doesn't cross - // between many shared libraries. - // - // The `addr2line::Context` structures are pretty expensive to create. Its - // cost is expected to be amortized by subsequent `locate` queries, which - // leverage the structures built when constructing `addr2line::Context`s to - // get nice speedups. If we didn't have this cache, that amortization would - // never happen, and symbolicating backtraces would be ssssllllooooowwww. - static mut MAPPINGS_CACHE: Option<Cache> = None; - - unsafe { - // FIXME: https://github.com/rust-lang/backtrace-rs/issues/678 - #[allow(static_mut_refs)] - f(MAPPINGS_CACHE.get_or_insert_with(Cache::new)) - } - } - - fn avma_to_svma(&self, addr: *const u8) -> Option<(usize, *const u8)> { - self.libraries - .iter() - .enumerate() - .filter_map(|(i, lib)| { - // First up, test if this `lib` has any segment containing the - // `addr` (handling relocation). If this check passes then we - // can continue below and actually translate the address. - // - // Note that we're using `wrapping_add` here to avoid overflow - // checks. It's been seen in the wild that the SVMA + bias - // computation overflows. It seems a bit odd that would happen - // but there's not a huge amount we can do about it other than - // probably just ignore those segments since they're likely - // pointing off into space. This originally came up in - // rust-lang/backtrace-rs#329. - if !lib.segments.iter().any(|s| { - let svma = s.stated_virtual_memory_address; - let start = svma.wrapping_add(lib.bias); - let end = start.wrapping_add(s.len); - let address = addr as usize; - start <= address && address < end - }) { - return None; - } - - // Now that we know `lib` contains `addr`, we can offset with - // the bias to find the stated virtual memory address. - let svma = (addr as usize).wrapping_sub(lib.bias); - Some((i, svma as *const u8)) - }) - .next() - } - - fn mapping_for_lib<'a>(&'a mut self, lib: usize) -> Option<(&'a mut Context<'a>, &'a Stash)> { - let cache_idx = self.mappings.iter().position(|(lib_id, _)| *lib_id == lib); - - let cache_entry = if let Some(idx) = cache_idx { - self.mappings.move_to_front(idx) - } else { - // When the mapping is not in the cache, create a new mapping and insert it, - // which will also evict the oldest entry. - create_mapping(&self.libraries[lib]) - .and_then(|mapping| self.mappings.push_front((lib, mapping))) - }; - - let (_, mapping) = cache_entry?; - let cx: &'a mut Context<'static> = &mut mapping.cx; - let stash: &'a Stash = &mapping.stash; - // don't leak the `'static` lifetime, make sure it's scoped to just - // ourselves - Some(( - unsafe { mem::transmute::<&'a mut Context<'static>, &'a mut Context<'a>>(cx) }, - stash, - )) - } -} - -pub unsafe fn resolve(what: ResolveWhat<'_>, cb: &mut dyn FnMut(&super::Symbol)) { - let addr = what.address_or_ip(); - let mut call = |sym: Symbol<'_>| { - // Extend the lifetime of `sym` to `'static` since we are unfortunately - // required to here, but it's only ever going out as a reference so no - // reference to it should be persisted beyond this frame anyway. - // SAFETY: praying the above is correct - let sym = unsafe { mem::transmute::<Symbol<'_>, Symbol<'static>>(sym) }; - (cb)(&super::Symbol { inner: sym }); - }; - - unsafe { - Cache::with_global(|cache| { - let (lib, addr) = match cache.avma_to_svma(addr.cast_const().cast::<u8>()) { - Some(pair) => pair, - None => return, - }; - - // Finally, get a cached mapping or create a new mapping for this file, and - // evaluate the DWARF info to find the file/line/name for this address. - let (cx, stash) = match cache.mapping_for_lib(lib) { - Some((cx, stash)) => (cx, stash), - None => return, - }; - let mut any_frames = false; - if let Ok(mut frames) = cx.find_frames(stash, addr as u64) { - while let Ok(Some(frame)) = frames.next() { - any_frames = true; - let name = match frame.function { - Some(f) => Some(f.name.slice()), - None => cx.object.search_symtab(addr as u64), - }; - call(Symbol::Frame { - addr: addr as *mut c_void, - location: frame.location, - name, - }); - } - } - if !any_frames { - if let Some((object_cx, object_addr)) = cx.object.search_object_map(addr as u64) { - if let Ok(mut frames) = object_cx.find_frames(stash, object_addr) { - while let Ok(Some(frame)) = frames.next() { - any_frames = true; - call(Symbol::Frame { - addr: addr as *mut c_void, - location: frame.location, - name: frame.function.map(|f| f.name.slice()), - }); - } - } - } - } - if !any_frames { - if let Some(name) = cx.object.search_symtab(addr as u64) { - call(Symbol::Symtab { name }); - } - } - }); - } -} - -pub enum Symbol<'a> { - /// We were able to locate frame information for this symbol, and - /// `addr2line`'s frame internally has all the nitty gritty details. - Frame { - addr: *mut c_void, - location: Option<addr2line::Location<'a>>, - name: Option<&'a [u8]>, - }, - /// Couldn't find debug information, but we found it in the symbol table of - /// the elf executable. - Symtab { name: &'a [u8] }, -} - -impl Symbol<'_> { - pub fn name(&self) -> Option<SymbolName<'_>> { - match self { - Symbol::Frame { name, .. } => { - let name = name.as_ref()?; - Some(SymbolName::new(name)) - } - Symbol::Symtab { name, .. } => Some(SymbolName::new(name)), - } - } - - pub fn addr(&self) -> Option<*mut c_void> { - match self { - Symbol::Frame { addr, .. } => Some(*addr), - Symbol::Symtab { .. } => None, - } - } - - pub fn filename_raw(&self) -> Option<BytesOrWideString<'_>> { - match self { - Symbol::Frame { location, .. } => { - let file = location.as_ref()?.file?; - Some(BytesOrWideString::Bytes(file.as_bytes())) - } - Symbol::Symtab { .. } => None, - } - } - - pub fn filename(&self) -> Option<&Path> { - match self { - Symbol::Frame { location, .. } => { - let file = location.as_ref()?.file?; - Some(Path::new(file)) - } - Symbol::Symtab { .. } => None, - } - } - - pub fn lineno(&self) -> Option<u32> { - match self { - Symbol::Frame { location, .. } => location.as_ref()?.line, - Symbol::Symtab { .. } => None, - } - } - - pub fn colno(&self) -> Option<u32> { - match self { - Symbol::Frame { location, .. } => location.as_ref()?.column, - Symbol::Symtab { .. } => None, - } - } -} diff --git a/vendor/backtrace/src/symbolize/gimli/coff.rs b/vendor/backtrace/src/symbolize/gimli/coff.rs deleted file mode 100644 index 031afea0..00000000 --- a/vendor/backtrace/src/symbolize/gimli/coff.rs +++ /dev/null @@ -1,116 +0,0 @@ -use super::mystd::path::Path; -use super::{gimli, Context, Endian, EndianSlice, Mapping, Stash}; -use alloc::sync::Arc; -use alloc::vec::Vec; -use core::convert::TryFrom; -use object::pe::{ImageDosHeader, ImageSymbol}; -use object::read::coff::ImageSymbol as _; -use object::read::pe::{ImageNtHeaders, ImageOptionalHeader, SectionTable}; -use object::read::StringTable; -use object::LittleEndian as LE; - -#[cfg(target_pointer_width = "32")] -type Pe = object::pe::ImageNtHeaders32; -#[cfg(target_pointer_width = "64")] -type Pe = object::pe::ImageNtHeaders64; - -impl Mapping { - pub fn new(path: &Path) -> Option<Mapping> { - let map = super::mmap(path)?; - Mapping::mk(map, |data, stash| { - Context::new(stash, Object::parse(data)?, None, None) - }) - } -} - -pub struct Object<'a> { - data: &'a [u8], - sections: SectionTable<'a>, - symbols: Vec<(usize, &'a ImageSymbol)>, - strings: StringTable<'a>, -} - -pub fn get_image_base(data: &[u8]) -> Option<usize> { - let dos_header = ImageDosHeader::parse(data).ok()?; - let mut offset = dos_header.nt_headers_offset().into(); - let (nt_headers, _) = Pe::parse(data, &mut offset).ok()?; - usize::try_from(nt_headers.optional_header().image_base()).ok() -} - -impl<'a> Object<'a> { - fn parse(data: &'a [u8]) -> Option<Object<'a>> { - let dos_header = ImageDosHeader::parse(data).ok()?; - let mut offset = dos_header.nt_headers_offset().into(); - let (nt_headers, _) = Pe::parse(data, &mut offset).ok()?; - let sections = nt_headers.sections(data, offset).ok()?; - let symtab = nt_headers.symbols(data).ok()?; - let strings = symtab.strings(); - let image_base = usize::try_from(nt_headers.optional_header().image_base()).ok()?; - - // Collect all the symbols into a local vector which is sorted - // by address and contains enough data to learn about the symbol - // name. Note that we only look at function symbols and also - // note that the sections are 1-indexed because the zero section - // is special (apparently). - let mut symbols = Vec::new(); - for (_, sym) in symtab.iter() { - if sym.derived_type() != object::pe::IMAGE_SYM_DTYPE_FUNCTION { - continue; - } - let Some(section_index) = sym.section() else { - continue; - }; - let addr = usize::try_from(sym.value.get(LE)).ok()?; - let section = sections.section(section_index).ok()?; - let va = usize::try_from(section.virtual_address.get(LE)).ok()?; - symbols.push((addr + va + image_base, sym)); - } - symbols.sort_unstable_by_key(|x| x.0); - Some(Object { - data, - sections, - strings, - symbols, - }) - } - - pub fn section(&self, _: &Stash, name: &str) -> Option<&'a [u8]> { - Some( - self.sections - .section_by_name(self.strings, name.as_bytes())? - .1 - .pe_data(self.data) - .ok()?, - ) - } - - pub fn search_symtab<'b>(&'b self, addr: u64) -> Option<&'b [u8]> { - // Note that unlike other formats COFF doesn't embed the size of - // each symbol. As a last ditch effort search for the *closest* - // symbol to a particular address and return that one. This gets - // really wonky once symbols start getting removed because the - // symbols returned here can be totally incorrect, but we have - // no idea of knowing how to detect that. - let addr = usize::try_from(addr).ok()?; - let i = match self.symbols.binary_search_by_key(&addr, |p| p.0) { - Ok(i) => i, - // typically `addr` isn't in the array, but `i` is where - // we'd insert it, so the previous position must be the - // greatest less than `addr` - Err(i) => i.checked_sub(1)?, - }; - self.symbols[i].1.name(self.strings).ok() - } - - pub(super) fn search_object_map(&self, _addr: u64) -> Option<(&Context<'_>, u64)> { - None - } -} - -pub(super) fn handle_split_dwarf<'data>( - _package: Option<&gimli::DwarfPackage<EndianSlice<'data, Endian>>>, - _stash: &'data Stash, - _load: addr2line::SplitDwarfLoad<EndianSlice<'data, Endian>>, -) -> Option<Arc<gimli::Dwarf<EndianSlice<'data, Endian>>>> { - None -} diff --git a/vendor/backtrace/src/symbolize/gimli/elf.rs b/vendor/backtrace/src/symbolize/gimli/elf.rs deleted file mode 100644 index a3ddc9df..00000000 --- a/vendor/backtrace/src/symbolize/gimli/elf.rs +++ /dev/null @@ -1,568 +0,0 @@ -#![allow(clippy::useless_conversion)] - -use super::mystd::ffi::OsStr; -use super::mystd::fs; -use super::mystd::os::unix::ffi::OsStrExt; -use super::mystd::path::{Path, PathBuf}; -use super::Either; -use super::{gimli, Context, Endian, EndianSlice, Mapping, Stash}; -use alloc::string::String; -use alloc::sync::Arc; -use alloc::vec::Vec; -use core::convert::{TryFrom, TryInto}; -use core::str; -#[cfg(feature = "ruzstd")] -use object::elf::ELFCOMPRESS_ZSTD; -use object::elf::{ELFCOMPRESS_ZLIB, ELF_NOTE_GNU, NT_GNU_BUILD_ID, SHF_COMPRESSED}; -use object::read::elf::{CompressionHeader, FileHeader, SectionHeader, SectionTable, Sym}; -use object::read::StringTable; -use object::{BigEndian, Bytes, NativeEndian}; - -#[cfg(target_pointer_width = "32")] -type Elf = object::elf::FileHeader32<NativeEndian>; -#[cfg(target_pointer_width = "64")] -type Elf = object::elf::FileHeader64<NativeEndian>; - -impl Mapping { - pub fn new(path: &Path) -> Option<Mapping> { - let map = super::mmap(path)?; - Mapping::mk_or_other(map, |map, stash| { - let object = Object::parse(map)?; - - // Try to locate an external debug file using the build ID. - if let Some(path_debug) = object.build_id().and_then(locate_build_id) { - if let Some(mapping) = Mapping::new_debug(path, path_debug, None) { - return Some(Either::A(mapping)); - } - } - - // Try to locate an external debug file using the GNU debug link section. - if let Some((path_debug, crc)) = object.gnu_debuglink_path(path) { - if let Some(mapping) = Mapping::new_debug(path, path_debug, Some(crc)) { - return Some(Either::A(mapping)); - } - } - - let dwp = Mapping::load_dwarf_package(path, stash); - - Context::new(stash, object, None, dwp).map(Either::B) - }) - } - - /// On Android, shared objects can be loaded directly from a ZIP archive - /// (see: [`super::Library::zip_offset`]). - /// - /// If `zip_offset` is not None, we interpret the `path` as an - /// "embedded" library path, and the value of `zip_offset` tells us where - /// in the ZIP archive the library data starts. - /// - /// We expect `zip_offset` to be page-aligned because the dynamic linker - /// requires this. Otherwise, loading the embedded library will fail. - /// - /// If we fail to load an embedded library for any reason, we fallback to - /// interpreting the path as a literal file on disk (same as calling [`Self::new`]). - #[cfg(target_os = "android")] - pub fn new_android(path: &Path, zip_offset: Option<u64>) -> Option<Mapping> { - fn map_embedded_library(path: &Path, zip_offset: u64) -> Option<Mapping> { - // get path of ZIP archive (delimited by `!/`) - let zip_path = Path::new(super::extract_zip_path_android(path.as_os_str())?); - - let file = fs::File::open(zip_path).ok()?; - let len = file.metadata().ok()?.len(); - - // NOTE: we map the remainder of the entire archive instead of just the library so we don't have to determine its length - // NOTE: mmap will fail if `zip_offset` is not page-aligned - let map = unsafe { - super::mmap::Mmap::map(&file, usize::try_from(len - zip_offset).ok()?, zip_offset) - }?; - - Mapping::mk(map, |map, stash| { - Context::new(stash, Object::parse(&map)?, None, None) - }) - } - - // if ZIP offset is given, try mapping as a ZIP-embedded library - // otherwise, fallback to mapping as a literal filepath - if let Some(zip_offset) = zip_offset { - map_embedded_library(path, zip_offset).or_else(|| Self::new(path)) - } else { - Self::new(path) - } - } - - /// Load debuginfo from an external debug file. - fn new_debug(original_path: &Path, path: PathBuf, crc: Option<u32>) -> Option<Mapping> { - let map = super::mmap(&path)?; - Mapping::mk(map, |map, stash| { - let object = Object::parse(map)?; - - if let Some(_crc) = crc { - // TODO: check crc - } - - // Try to locate a supplementary object file. - let mut sup = None; - if let Some((path_sup, build_id_sup)) = object.gnu_debugaltlink_path(&path) { - if let Some(map_sup) = super::mmap(&path_sup) { - let map_sup = stash.cache_mmap(map_sup); - if let Some(sup_) = Object::parse(map_sup) { - if sup_.build_id() == Some(build_id_sup) { - sup = Some(sup_); - } - } - } - } - - let dwp = Mapping::load_dwarf_package(original_path, stash); - - Context::new(stash, object, sup, dwp) - }) - } - - /// Try to locate a DWARF package file. - fn load_dwarf_package<'data>(path: &Path, stash: &'data Stash) -> Option<Object<'data>> { - let mut path_dwp = path.to_path_buf(); - let dwp_extension = path - .extension() - .map(|previous_extension| { - let mut previous_extension = previous_extension.to_os_string(); - previous_extension.push(".dwp"); - previous_extension - }) - .unwrap_or_else(|| "dwp".into()); - path_dwp.set_extension(dwp_extension); - if let Some(map_dwp) = super::mmap(&path_dwp) { - let map_dwp = stash.cache_mmap(map_dwp); - if let Some(dwp_) = Object::parse(map_dwp) { - return Some(dwp_); - } - } - - None - } -} - -struct ParsedSym { - address: u64, - size: u64, - name: u32, -} - -pub struct Object<'a> { - /// Zero-sized type representing the native endianness. - /// - /// We could use a literal instead, but this helps ensure correctness. - endian: NativeEndian, - /// The entire file data. - data: &'a [u8], - sections: SectionTable<'a, Elf>, - strings: StringTable<'a>, - /// List of pre-parsed and sorted symbols by base address. - syms: Vec<ParsedSym>, -} - -impl<'a> Object<'a> { - fn parse(data: &'a [u8]) -> Option<Object<'a>> { - let elf = Elf::parse(data).ok()?; - let endian = elf.endian().ok()?; - let sections = elf.sections(endian, data).ok()?; - let mut syms = sections - .symbols(endian, data, object::elf::SHT_SYMTAB) - .ok()?; - if syms.is_empty() { - syms = sections - .symbols(endian, data, object::elf::SHT_DYNSYM) - .ok()?; - } - let strings = syms.strings(); - - let mut syms = syms - .iter() - // Only look at function/object symbols. This mirrors what - // libbacktrace does and in general we're only symbolicating - // function addresses in theory. Object symbols correspond - // to data, and maybe someone's crazy enough to have a - // function go into static data? - .filter(|sym| { - let st_type = sym.st_type(); - st_type == object::elf::STT_FUNC || st_type == object::elf::STT_OBJECT - }) - // skip anything that's in an undefined section header, - // since it means it's an imported function and we're only - // symbolicating with locally defined functions. - .filter(|sym| sym.st_shndx(endian) != object::elf::SHN_UNDEF) - .map(|sym| { - let address = sym.st_value(endian).into(); - let size = sym.st_size(endian).into(); - let name = sym.st_name(endian); - ParsedSym { - address, - size, - name, - } - }) - .collect::<Vec<_>>(); - syms.sort_unstable_by_key(|s| s.address); - Some(Object { - endian, - data, - sections, - strings, - syms, - }) - } - - pub fn section(&self, stash: &'a Stash, name: &str) -> Option<&'a [u8]> { - if let Some(section) = self.section_header(name) { - let mut data = Bytes(section.data(self.endian, self.data).ok()?); - - // Check for DWARF-standard (gABI) compression, i.e., as generated - // by ld's `--compress-debug-sections=zlib-gabi` and - // `--compress-debug-sections=zstd` flags. - let flags: u64 = section.sh_flags(self.endian).into(); - if (flags & u64::from(SHF_COMPRESSED)) == 0 { - // Not compressed. - return Some(data.0); - } - - let header = data.read::<<Elf as FileHeader>::CompressionHeader>().ok()?; - match header.ch_type(self.endian) { - ELFCOMPRESS_ZLIB => { - let size = usize::try_from(header.ch_size(self.endian)).ok()?; - let buf = stash.allocate(size); - decompress_zlib(data.0, buf)?; - return Some(buf); - } - #[cfg(feature = "ruzstd")] - ELFCOMPRESS_ZSTD => { - let size = usize::try_from(header.ch_size(self.endian)).ok()?; - let buf = stash.allocate(size); - decompress_zstd(data.0, buf)?; - return Some(buf); - } - _ => return None, // Unknown compression type. - } - } - - // Check for the nonstandard GNU compression format, i.e., as generated - // by ld's `--compress-debug-sections=zlib-gnu` flag. This means that if - // we're actually asking for `.debug_info` then we need to look up a - // section named `.zdebug_info`. - if !name.starts_with(".debug_") { - return None; - } - let debug_name = name[7..].as_bytes(); - let compressed_section = self - .sections - .iter() - .filter_map(|header| { - let name = self.sections.section_name(self.endian, header).ok()?; - if name.starts_with(b".zdebug_") && &name[8..] == debug_name { - Some(header) - } else { - None - } - }) - .next()?; - let mut data = Bytes(compressed_section.data(self.endian, self.data).ok()?); - if data.read_bytes(8).ok()?.0 != b"ZLIB\0\0\0\0" { - return None; - } - let size = usize::try_from(data.read::<object::U32Bytes<_>>().ok()?.get(BigEndian)).ok()?; - let buf = stash.allocate(size); - decompress_zlib(data.0, buf)?; - Some(buf) - } - - fn section_header(&self, name: &str) -> Option<&<Elf as FileHeader>::SectionHeader> { - self.sections - .section_by_name(self.endian, name.as_bytes()) - .map(|(_index, section)| section) - } - - pub fn search_symtab(&self, addr: u64) -> Option<&[u8]> { - // Same sort of binary search as Windows above - let i = match self.syms.binary_search_by_key(&addr, |sym| sym.address) { - Ok(i) => i, - Err(i) => i.checked_sub(1)?, - }; - let sym = self.syms.get(i)?; - if sym.address <= addr && addr <= sym.address + sym.size { - self.strings.get(sym.name).ok() - } else { - None - } - } - - pub(super) fn search_object_map(&self, _addr: u64) -> Option<(&Context<'_>, u64)> { - None - } - - fn build_id(&self) -> Option<&'a [u8]> { - for section in self.sections.iter() { - if let Ok(Some(mut notes)) = section.notes(self.endian, self.data) { - while let Ok(Some(note)) = notes.next() { - if note.name() == ELF_NOTE_GNU && note.n_type(self.endian) == NT_GNU_BUILD_ID { - return Some(note.desc()); - } - } - } - } - None - } - - // The contents of the ".gnu_debuglink" section is documented at: - // https://sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html - fn gnu_debuglink_path(&self, path: &Path) -> Option<(PathBuf, u32)> { - let section = self.section_header(".gnu_debuglink")?; - let data = section.data(self.endian, self.data).ok()?; - let len = data.iter().position(|x| *x == 0)?; - let filename = OsStr::from_bytes(&data[..len]); - let offset = (len + 1 + 3) & !3; - let crc_bytes = data - .get(offset..offset + 4) - .and_then(|bytes| bytes.try_into().ok())?; - let crc = u32::from_ne_bytes(crc_bytes); - let path_debug = locate_debuglink(path, filename)?; - Some((path_debug, crc)) - } - - // The format of the ".gnu_debugaltlink" section is based on gdb. - fn gnu_debugaltlink_path(&self, path: &Path) -> Option<(PathBuf, &'a [u8])> { - let section = self.section_header(".gnu_debugaltlink")?; - let data = section.data(self.endian, self.data).ok()?; - let len = data.iter().position(|x| *x == 0)?; - let filename = OsStr::from_bytes(&data[..len]); - let build_id = &data[len + 1..]; - let path_sup = locate_debugaltlink(path, filename, build_id)?; - Some((path_sup, build_id)) - } -} - -fn decompress_zlib(input: &[u8], output: &mut [u8]) -> Option<()> { - use miniz_oxide::inflate::core::inflate_flags::{ - TINFL_FLAG_PARSE_ZLIB_HEADER, TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF, - }; - use miniz_oxide::inflate::core::{decompress, DecompressorOxide}; - use miniz_oxide::inflate::TINFLStatus; - - let (status, in_read, out_read) = decompress( - &mut DecompressorOxide::new(), - input, - output, - 0, - TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF | TINFL_FLAG_PARSE_ZLIB_HEADER, - ); - if status == TINFLStatus::Done && in_read == input.len() && out_read == output.len() { - Some(()) - } else { - None - } -} - -#[cfg(feature = "ruzstd")] -fn decompress_zstd(mut input: &[u8], mut output: &mut [u8]) -> Option<()> { - use ruzstd::frame::ReadFrameHeaderError; - use ruzstd::frame_decoder::FrameDecoderError; - use ruzstd::io::Read; - - while !input.is_empty() { - let mut decoder = match ruzstd::StreamingDecoder::new(&mut input) { - Ok(decoder) => decoder, - Err(FrameDecoderError::ReadFrameHeaderError(ReadFrameHeaderError::SkipFrame { - length, - .. - })) => { - input = &input.get(length as usize..)?; - continue; - } - Err(_) => return None, - }; - loop { - let bytes_written = decoder.read(output).ok()?; - if bytes_written == 0 { - break; - } - output = &mut output[bytes_written..]; - } - } - - if !output.is_empty() { - // Lengths didn't match, something is wrong. - return None; - } - - Some(()) -} - -const DEBUG_PATH: &str = "/usr/lib/debug"; - -fn debug_path_exists() -> bool { - cfg_if::cfg_if! { - if #[cfg(any(target_os = "freebsd", target_os = "hurd", target_os = "linux"))] { - use core::sync::atomic::{AtomicU8, Ordering}; - static DEBUG_PATH_EXISTS: AtomicU8 = AtomicU8::new(0); - - let mut exists = DEBUG_PATH_EXISTS.load(Ordering::Relaxed); - if exists == 0 { - exists = if Path::new(DEBUG_PATH).is_dir() { - 1 - } else { - 2 - }; - DEBUG_PATH_EXISTS.store(exists, Ordering::Relaxed); - } - exists == 1 - } else { - false - } - } -} - -/// Locate a debug file based on its build ID. -/// -/// The format of build id paths is documented at: -/// https://sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html -fn locate_build_id(build_id: &[u8]) -> Option<PathBuf> { - const BUILD_ID_PATH: &str = "/usr/lib/debug/.build-id/"; - const BUILD_ID_SUFFIX: &str = ".debug"; - - if build_id.len() < 2 { - return None; - } - - if !debug_path_exists() { - return None; - } - - let mut path = - String::with_capacity(BUILD_ID_PATH.len() + BUILD_ID_SUFFIX.len() + build_id.len() * 2 + 1); - path.push_str(BUILD_ID_PATH); - path.push(char::from_digit((build_id[0] >> 4) as u32, 16)?); - path.push(char::from_digit((build_id[0] & 0xf) as u32, 16)?); - path.push('/'); - for byte in &build_id[1..] { - path.push(char::from_digit((byte >> 4) as u32, 16)?); - path.push(char::from_digit((byte & 0xf) as u32, 16)?); - } - path.push_str(BUILD_ID_SUFFIX); - Some(PathBuf::from(path)) -} - -/// Locate a file specified in a `.gnu_debuglink` section. -/// -/// `path` is the file containing the section. -/// `filename` is from the contents of the section. -/// -/// Search order is based on gdb, documented at: -/// https://sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html -/// -/// gdb also allows the user to customize the debug search path, but we don't. -/// -/// gdb also supports debuginfod, but we don't yet. -fn locate_debuglink(path: &Path, filename: &OsStr) -> Option<PathBuf> { - let path = fs::canonicalize(path).ok()?; - let parent = path.parent()?; - let mut f = - PathBuf::with_capacity(DEBUG_PATH.len() + parent.as_os_str().len() + filename.len() + 2); - let filename = Path::new(filename); - - // Try "/parent/filename" if it differs from "path" - f.push(parent); - f.push(filename); - if f != path && f.is_file() { - return Some(f); - } - - // Try "/parent/.debug/filename" - f.clear(); - f.push(parent); - f.push(".debug"); - f.push(filename); - if f.is_file() { - return Some(f); - } - - if debug_path_exists() { - // Try "/usr/lib/debug/parent/filename" - f.clear(); - f.push(DEBUG_PATH); - f.push(parent.strip_prefix("/").unwrap()); - f.push(filename); - if f.is_file() { - return Some(f); - } - } - - None -} - -/// Locate a file specified in a `.gnu_debugaltlink` section. -/// -/// `path` is the file containing the section. -/// `filename` and `build_id` are the contents of the section. -/// -/// Search order is based on gdb: -/// - filename, which is either absolute or relative to `path` -/// - the build ID path under `BUILD_ID_PATH` -/// -/// gdb also allows the user to customize the debug search path, but we don't. -/// -/// gdb also supports debuginfod, but we don't yet. -fn locate_debugaltlink(path: &Path, filename: &OsStr, build_id: &[u8]) -> Option<PathBuf> { - let filename = Path::new(filename); - if filename.is_absolute() { - if filename.is_file() { - return Some(filename.into()); - } - } else { - let path = fs::canonicalize(path).ok()?; - let parent = path.parent()?; - let mut f = PathBuf::from(parent); - f.push(filename); - if f.is_file() { - return Some(f); - } - } - - locate_build_id(build_id) -} - -pub(super) fn handle_split_dwarf<'data>( - package: Option<&gimli::DwarfPackage<EndianSlice<'data, Endian>>>, - stash: &'data Stash, - load: addr2line::SplitDwarfLoad<EndianSlice<'data, Endian>>, -) -> Option<Arc<gimli::Dwarf<EndianSlice<'data, Endian>>>> { - if let Some(dwp) = package.as_ref() { - if let Ok(Some(cu)) = dwp.find_cu(load.dwo_id, &load.parent) { - return Some(Arc::new(cu)); - } - } - - let mut path = PathBuf::new(); - if let Some(p) = load.comp_dir.as_ref() { - path.push(OsStr::from_bytes(&p)); - } - - path.push(OsStr::from_bytes(&load.path.as_ref()?)); - - if let Some(map_dwo) = super::mmap(&path) { - let map_dwo = stash.cache_mmap(map_dwo); - if let Some(dwo) = Object::parse(map_dwo) { - return gimli::Dwarf::load(|id| -> Result<_, ()> { - let data = id - .dwo_name() - .and_then(|name| dwo.section(stash, name)) - .unwrap_or(&[]); - Ok(EndianSlice::new(data, Endian)) - }) - .ok() - .map(|mut dwo_dwarf| { - dwo_dwarf.make_dwo(&load.parent); - Arc::new(dwo_dwarf) - }); - } - } - - None -} diff --git a/vendor/backtrace/src/symbolize/gimli/libs_aix.rs b/vendor/backtrace/src/symbolize/gimli/libs_aix.rs deleted file mode 100644 index 01270a71..00000000 --- a/vendor/backtrace/src/symbolize/gimli/libs_aix.rs +++ /dev/null @@ -1,85 +0,0 @@ -use super::mystd::env; -use super::mystd::ffi::OsStr; -use super::mystd::os::unix::prelude::*; -use super::xcoff; -use super::{Library, LibrarySegment}; -use alloc::borrow::ToOwned; -use alloc::vec; -use alloc::vec::Vec; -use core::ffi::{c_int, CStr}; -use core::mem; - -const EXE_IMAGE_BASE: u64 = 0x100000000; - -unsafe extern "C" { - #[link_name = "_Errno"] - fn errno_location() -> *mut c_int; -} - -fn errno() -> i32 { - unsafe { (*errno_location()) as i32 } -} - -/// On AIX, we use `loadquery` with `L_GETINFO` flag to query libraries mmapped. -/// See https://www.ibm.com/docs/en/aix/7.2?topic=l-loadquery-subroutine for -/// detailed information of `loadquery`. -pub(super) fn native_libraries() -> Vec<Library> { - let mut ret = Vec::new(); - unsafe { - let mut buffer = vec![mem::zeroed::<libc::ld_info>(); 64]; - loop { - if libc::loadquery( - libc::L_GETINFO, - buffer.as_mut_ptr().cast::<libc::c_char>(), - (mem::size_of::<libc::ld_info>() * buffer.len()) as u32, - ) != -1 - { - break; - } else { - match errno() { - libc::ENOMEM => { - buffer.resize(buffer.len() * 2, mem::zeroed::<libc::ld_info>()); - } - _ => { - // If other error occurs, return empty libraries. - return Vec::new(); - } - } - } - } - let mut current = buffer.as_mut_ptr(); - loop { - let text_base = (*current).ldinfo_textorg as usize; - let filename_ptr: *const libc::c_char = &(*current).ldinfo_filename[0]; - let bytes = CStr::from_ptr(filename_ptr).to_bytes(); - let member_name_ptr = filename_ptr.offset((bytes.len() + 1) as isize); - let mut filename = OsStr::from_bytes(bytes).to_owned(); - if text_base == EXE_IMAGE_BASE as usize { - if let Ok(exe) = env::current_exe() { - filename = exe.into_os_string(); - } - } - let bytes = CStr::from_ptr(member_name_ptr).to_bytes(); - let member_name = OsStr::from_bytes(bytes).to_owned(); - if let Some(image) = xcoff::parse_image(filename.as_ref(), &member_name) { - ret.push(Library { - name: filename, - member_name, - segments: vec![LibrarySegment { - stated_virtual_memory_address: image.base as usize, - len: image.size, - }], - bias: (text_base + image.offset).wrapping_sub(image.base as usize), - }); - } - if (*current).ldinfo_next == 0 { - break; - } - current = current - .cast::<libc::c_char>() - .offset((*current).ldinfo_next as isize) - .cast::<libc::ld_info>(); - } - } - return ret; -} diff --git a/vendor/backtrace/src/symbolize/gimli/libs_dl_iterate_phdr.rs b/vendor/backtrace/src/symbolize/gimli/libs_dl_iterate_phdr.rs deleted file mode 100644 index d52819f6..00000000 --- a/vendor/backtrace/src/symbolize/gimli/libs_dl_iterate_phdr.rs +++ /dev/null @@ -1,122 +0,0 @@ -// Other Unix (e.g. Linux) platforms use ELF as an object file format -// and typically implement an API called `dl_iterate_phdr` to load -// native libraries. - -use super::mystd::env; -use super::mystd::ffi::{OsStr, OsString}; -use super::mystd::os::unix::prelude::*; -use super::{parse_running_mmaps, Library, LibrarySegment}; -use alloc::borrow::ToOwned; -use alloc::vec::Vec; -use core::ffi::CStr; -use core::slice; - -struct CallbackData { - libs: Vec<Library>, - maps: Option<Vec<parse_running_mmaps::MapsEntry>>, -} -pub(super) fn native_libraries() -> Vec<Library> { - let mut cb_data = CallbackData { - libs: Vec::new(), - #[cfg(not(target_os = "hurd"))] - maps: parse_running_mmaps::parse_maps().ok(), - #[cfg(target_os = "hurd")] - maps: None, - }; - unsafe { - libc::dl_iterate_phdr(Some(callback), core::ptr::addr_of_mut!(cb_data).cast()); - } - cb_data.libs -} - -fn infer_current_exe( - maps: &Option<Vec<parse_running_mmaps::MapsEntry>>, - base_addr: usize, -) -> OsString { - #[cfg(not(target_os = "hurd"))] - if let Some(entries) = maps { - let opt_path = entries - .iter() - .find(|e| e.ip_matches(base_addr) && e.pathname().len() > 0) - .map(|e| e.pathname()) - .cloned(); - if let Some(path) = opt_path { - return path; - } - } - - env::current_exe().map(|e| e.into()).unwrap_or_default() -} - -/// # Safety -/// `info` must be a valid pointer. -/// `data` must be a valid pointer to `CallbackData`. -#[forbid(unsafe_op_in_unsafe_fn)] -unsafe extern "C" fn callback( - info: *mut libc::dl_phdr_info, - _size: libc::size_t, - data: *mut libc::c_void, -) -> libc::c_int { - // SAFETY: We are guaranteed these fields: - let dlpi_addr = unsafe { (*info).dlpi_addr }; - let dlpi_name = unsafe { (*info).dlpi_name }; - let dlpi_phdr = unsafe { (*info).dlpi_phdr }; - let dlpi_phnum = unsafe { (*info).dlpi_phnum }; - // SAFETY: We assured this. - let CallbackData { libs, maps } = unsafe { &mut *data.cast::<CallbackData>() }; - // most implementations give us the main program first - let is_main = libs.is_empty(); - // we may be statically linked, which means we are main and mostly one big blob of code - let is_static = dlpi_addr == 0; - // sometimes we get a null or 0-len CStr, based on libc's whims, but these mean the same thing - let no_given_name = dlpi_name.is_null() - // SAFETY: we just checked for null - || unsafe { *dlpi_name == 0 }; - let name = if is_static { - // don't try to look up our name from /proc/self/maps, it'll get silly - env::current_exe().unwrap_or_default().into_os_string() - } else if is_main && no_given_name { - infer_current_exe(&maps, dlpi_addr as usize) - } else { - // this fallback works even if we are main, because some platforms give the name anyways - if dlpi_name.is_null() { - OsString::new() - } else { - // SAFETY: we just checked for nullness - OsStr::from_bytes(unsafe { CStr::from_ptr(dlpi_name) }.to_bytes()).to_owned() - } - }; - #[cfg(target_os = "android")] - let zip_offset: Option<u64> = { - // only check for ZIP-embedded file if we have data from /proc/self/maps - maps.as_ref().and_then(|maps| { - // check if file is embedded within a ZIP archive by searching for `!/` - super::extract_zip_path_android(&name).and_then(|_| { - // find MapsEntry matching library's base address and get its file offset - maps.iter() - .find(|m| m.ip_matches(dlpi_addr as usize)) - .map(|m| m.offset()) - }) - }) - }; - let headers = if dlpi_phdr.is_null() || dlpi_phnum == 0 { - &[] - } else { - // SAFETY: We just checked for nullness or 0-len slices - unsafe { slice::from_raw_parts(dlpi_phdr, dlpi_phnum as usize) } - }; - libs.push(Library { - name, - #[cfg(target_os = "android")] - zip_offset, - segments: headers - .iter() - .map(|header| LibrarySegment { - len: header.p_memsz as usize, - stated_virtual_memory_address: header.p_vaddr as usize, - }) - .collect(), - bias: dlpi_addr as usize, - }); - 0 -} diff --git a/vendor/backtrace/src/symbolize/gimli/libs_haiku.rs b/vendor/backtrace/src/symbolize/gimli/libs_haiku.rs deleted file mode 100644 index ddfd6b47..00000000 --- a/vendor/backtrace/src/symbolize/gimli/libs_haiku.rs +++ /dev/null @@ -1,50 +0,0 @@ -// Haiku implements the image_info struct and the get_next_image_info() -// functions to iterate through the loaded executable images. The -// image_info struct contains a pointer to the start of the .text -// section within the virtual address space, as well as the size of -// that section. All the read-only segments of the ELF-binary are in -// that part of the address space. - -use super::mystd::ffi::OsStr; -use super::mystd::os::unix::prelude::*; -use super::{Library, LibrarySegment}; -use alloc::borrow::ToOwned; -use alloc::vec::Vec; -use core::ffi::CStr; -use core::mem::MaybeUninit; - -pub(super) fn native_libraries() -> Vec<Library> { - let mut libraries: Vec<Library> = Vec::new(); - - unsafe { - let mut info = MaybeUninit::<libc::image_info>::zeroed(); - let mut cookie: i32 = 0; - // Load the first image to get a valid info struct - let mut status = - libc::get_next_image_info(libc::B_CURRENT_TEAM, &mut cookie, info.as_mut_ptr()); - if status != libc::B_OK { - return libraries; - } - let mut info = info.assume_init(); - - while status == libc::B_OK { - let mut segments = Vec::new(); - segments.push(LibrarySegment { - stated_virtual_memory_address: 0, - len: info.text_size as usize, - }); - - let bytes = CStr::from_ptr(info.name.as_ptr()).to_bytes(); - let name = OsStr::from_bytes(bytes).to_owned(); - libraries.push(Library { - name: name, - segments: segments, - bias: info.text as usize, - }); - - status = libc::get_next_image_info(libc::B_CURRENT_TEAM, &mut cookie, &mut info); - } - } - - libraries -} diff --git a/vendor/backtrace/src/symbolize/gimli/libs_illumos.rs b/vendor/backtrace/src/symbolize/gimli/libs_illumos.rs deleted file mode 100644 index 025eb250..00000000 --- a/vendor/backtrace/src/symbolize/gimli/libs_illumos.rs +++ /dev/null @@ -1,101 +0,0 @@ -use super::mystd::ffi::OsStr; -use super::mystd::os::unix::prelude::*; -use super::{Library, LibrarySegment}; -use alloc::borrow::ToOwned; -use alloc::vec::Vec; -use core::ffi::CStr; -use core::mem; -use object::NativeEndian; - -#[cfg(target_pointer_width = "64")] -use object::elf::{FileHeader64 as FileHeader, ProgramHeader64 as ProgramHeader}; - -type EHdr = FileHeader<NativeEndian>; -type PHdr = ProgramHeader<NativeEndian>; - -#[repr(C)] -struct LinkMap { - l_addr: libc::c_ulong, - l_name: *const libc::c_char, - l_ld: *const libc::c_void, - l_next: *const LinkMap, - l_prev: *const LinkMap, - l_refname: *const libc::c_char, -} - -const RTLD_SELF: *const libc::c_void = -3isize as *const libc::c_void; -const RTLD_DI_LINKMAP: libc::c_int = 2; - -unsafe extern "C" { - fn dlinfo( - handle: *const libc::c_void, - request: libc::c_int, - p: *mut libc::c_void, - ) -> libc::c_int; -} - -pub(super) fn native_libraries() -> Vec<Library> { - let mut libs = Vec::new(); - - // Request the current link map from the runtime linker: - let map = unsafe { - let mut map: *const LinkMap = mem::zeroed(); - if dlinfo( - RTLD_SELF, - RTLD_DI_LINKMAP, - core::ptr::addr_of_mut!(map).cast::<libc::c_void>(), - ) != 0 - { - return libs; - } - map - }; - - // Each entry in the link map represents a loaded object: - let mut l = map; - while !l.is_null() { - // Fetch the fully qualified path of the loaded object: - let bytes = unsafe { CStr::from_ptr((*l).l_name) }.to_bytes(); - let name = OsStr::from_bytes(bytes).to_owned(); - - // The base address of the object loaded into memory: - let addr = unsafe { (*l).l_addr }; - - // Use the ELF header for this object to locate the program - // header: - let e: *const EHdr = unsafe { (*l).l_addr as *const EHdr }; - let phoff = unsafe { (*e).e_phoff }.get(NativeEndian); - let phnum = unsafe { (*e).e_phnum }.get(NativeEndian); - let etype = unsafe { (*e).e_type }.get(NativeEndian); - - let phdr: *const PHdr = (addr + phoff) as *const PHdr; - let phdr = unsafe { core::slice::from_raw_parts(phdr, phnum as usize) }; - - libs.push(Library { - name, - segments: phdr - .iter() - .map(|p| { - let memsz = p.p_memsz.get(NativeEndian); - let vaddr = p.p_vaddr.get(NativeEndian); - LibrarySegment { - len: memsz as usize, - stated_virtual_memory_address: vaddr as usize, - } - }) - .collect(), - bias: if etype == object::elf::ET_EXEC { - // Program header addresses for the base executable are - // already absolute. - 0 - } else { - // Other addresses are relative to the object base. - addr as usize - }, - }); - - l = unsafe { (*l).l_next }; - } - - libs -} diff --git a/vendor/backtrace/src/symbolize/gimli/libs_libnx.rs b/vendor/backtrace/src/symbolize/gimli/libs_libnx.rs deleted file mode 100644 index 7f280780..00000000 --- a/vendor/backtrace/src/symbolize/gimli/libs_libnx.rs +++ /dev/null @@ -1,28 +0,0 @@ -use super::{Library, LibrarySegment}; -use alloc::vec::Vec; - -// DevkitA64 doesn't natively support debug info, but the build system will -// place debug info at the path `romfs:/debug_info.elf`. -pub(super) fn native_libraries() -> Vec<Library> { - unsafe extern "C" { - static __start__: u8; - } - - let bias = core::ptr::addr_of!(__start__) as usize; - - let mut ret = Vec::new(); - let mut segments = Vec::new(); - segments.push(LibrarySegment { - stated_virtual_memory_address: 0, - len: usize::max_value() - bias, - }); - - let path = "romfs:/debug_info.elf"; - ret.push(Library { - name: path.into(), - segments, - bias, - }); - - ret -} diff --git a/vendor/backtrace/src/symbolize/gimli/libs_macos.rs b/vendor/backtrace/src/symbolize/gimli/libs_macos.rs deleted file mode 100644 index f65811b2..00000000 --- a/vendor/backtrace/src/symbolize/gimli/libs_macos.rs +++ /dev/null @@ -1,154 +0,0 @@ -#![allow(deprecated)] - -use super::mystd::ffi::OsStr; -use super::mystd::os::unix::prelude::*; -use super::mystd::prelude::v1::*; -use super::{Library, LibrarySegment}; -use core::convert::TryInto; -use core::ffi::CStr; -use core::mem; - -// FIXME: replace with ptr::from_ref once MSRV is high enough -#[inline(always)] -#[must_use] -const fn ptr_from_ref<T: ?Sized>(r: &T) -> *const T { - r -} - -pub(super) fn native_libraries() -> Vec<Library> { - let mut ret = Vec::new(); - let images = unsafe { libc::_dyld_image_count() }; - for i in 0..images { - ret.extend(native_library(i)); - } - return ret; -} - -fn native_library(i: u32) -> Option<Library> { - use object::macho; - use object::read::macho::{MachHeader, Segment}; - use object::NativeEndian; - - // Fetch the name of this library which corresponds to the path of - // where to load it as well. - let name = unsafe { - let name = libc::_dyld_get_image_name(i); - if name.is_null() { - return None; - } - CStr::from_ptr(name) - }; - - // Load the image header of this library and delegate to `object` to - // parse all the load commands so we can figure out all the segments - // involved here. - let (mut load_commands, endian) = unsafe { - let header = libc::_dyld_get_image_header(i); - if header.is_null() { - return None; - } - match (*header).magic { - macho::MH_MAGIC => { - let endian = NativeEndian; - let header = &*header.cast::<macho::MachHeader32<NativeEndian>>(); - let data = core::slice::from_raw_parts( - ptr_from_ref(header).cast::<u8>(), - mem::size_of_val(header) + header.sizeofcmds.get(endian) as usize, - ); - (header.load_commands(endian, data, 0).ok()?, endian) - } - macho::MH_MAGIC_64 => { - let endian = NativeEndian; - let header = &*header.cast::<macho::MachHeader64<NativeEndian>>(); - let data = core::slice::from_raw_parts( - ptr_from_ref(header).cast::<u8>(), - mem::size_of_val(header) + header.sizeofcmds.get(endian) as usize, - ); - (header.load_commands(endian, data, 0).ok()?, endian) - } - _ => return None, - } - }; - - // Iterate over the segments and register known regions for segments - // that we find. Additionally record information bout text segments - // for processing later, see comments below. - let mut segments = Vec::new(); - let mut first_text = 0; - let mut text_fileoff_zero = false; - while let Some(cmd) = load_commands.next().ok()? { - if let Some((seg, _)) = cmd.segment_32().ok()? { - if seg.name() == b"__TEXT" { - first_text = segments.len(); - if seg.fileoff(endian) == 0 && seg.filesize(endian) > 0 { - text_fileoff_zero = true; - } - } - segments.push(LibrarySegment { - len: seg.vmsize(endian).try_into().ok()?, - stated_virtual_memory_address: seg.vmaddr(endian).try_into().ok()?, - }); - } - if let Some((seg, _)) = cmd.segment_64().ok()? { - if seg.name() == b"__TEXT" { - first_text = segments.len(); - if seg.fileoff(endian) == 0 && seg.filesize(endian) > 0 { - text_fileoff_zero = true; - } - } - segments.push(LibrarySegment { - len: seg.vmsize(endian).try_into().ok()?, - stated_virtual_memory_address: seg.vmaddr(endian).try_into().ok()?, - }); - } - } - - // Determine the "slide" for this library which ends up being the - // bias we use to figure out where in memory objects are loaded. - // This is a bit of a weird computation though and is the result of - // trying a few things in the wild and seeing what sticks. - // - // The general idea is that the `bias` plus a segment's - // `stated_virtual_memory_address` is going to be where in the - // actual address space the segment resides. The other thing we rely - // on though is that a real address minus the `bias` is the index to - // look up in the symbol table and debuginfo. - // - // It turns out, though, that for system loaded libraries these - // calculations are incorrect. For native executables, however, it - // appears correct. Lifting some logic from LLDB's source it has - // some special-casing for the first `__TEXT` section loaded from - // file offset 0 with a nonzero size. For whatever reason when this - // is present it appears to mean that the symbol table is relative - // to just the vmaddr slide for the library. If it's *not* present - // then the symbol table is relative to the vmaddr slide plus the - // segment's stated address. - // - // To handle this situation if we *don't* find a text section at - // file offset zero then we increase the bias by the first text - // sections's stated address and decrease all stated addresses by - // that amount as well. That way the symbol table is always appears - // relative to the library's bias amount. This appears to have the - // right results for symbolizing via the symbol table. - // - // Honestly I'm not entirely sure whether this is right or if - // there's something else that should indicate how to do this. For - // now though this seems to work well enough (?) and we should - // always be able to tweak this over time if necessary. - // - // For some more information see #318 - let mut slide = unsafe { libc::_dyld_get_image_vmaddr_slide(i) as usize }; - if !text_fileoff_zero { - let adjust = segments[first_text].stated_virtual_memory_address; - for segment in segments.iter_mut() { - segment.stated_virtual_memory_address -= adjust; - } - slide += adjust; - } - - Some(Library { - name: OsStr::from_bytes(name.to_bytes()).to_owned(), - segments, - bias: slide, - }) -} diff --git a/vendor/backtrace/src/symbolize/gimli/libs_windows.rs b/vendor/backtrace/src/symbolize/gimli/libs_windows.rs deleted file mode 100644 index 1d9a74cc..00000000 --- a/vendor/backtrace/src/symbolize/gimli/libs_windows.rs +++ /dev/null @@ -1,158 +0,0 @@ -use super::super::super::windows_sys::*; -use super::mystd::ffi::OsString; -use super::{coff, mmap, Library, LibrarySegment}; -use alloc::vec; -use alloc::vec::Vec; -use core::mem; -use core::mem::MaybeUninit; - -// For loading native libraries on Windows, see some discussion on -// rust-lang/rust#71060 for the various strategies here. -pub(super) fn native_libraries() -> Vec<Library> { - let mut ret = Vec::new(); - unsafe { - add_loaded_images(&mut ret); - } - return ret; -} - -unsafe fn add_loaded_images(ret: &mut Vec<Library>) { - unsafe { - let snap = CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, 0); - if snap == INVALID_HANDLE_VALUE { - return; - } - - // huge struct, probably should avoid manually initializing it even if we can - let mut me = MaybeUninit::<MODULEENTRY32W>::zeroed().assume_init(); - me.dwSize = mem::size_of_val(&me) as u32; - if Module32FirstW(snap, &mut me) == TRUE { - loop { - if let Some(lib) = load_library(&me) { - ret.push(lib); - } - - if Module32NextW(snap, &mut me) != TRUE { - break; - } - } - } - - CloseHandle(snap); - } -} - -// Safety: long_path should be null-terminated -#[cfg(target_os = "cygwin")] -unsafe fn get_posix_path(long_path: &[u16]) -> Option<OsString> { - use super::mystd::os::unix::ffi::OsStringExt; - - unsafe extern "C" { - // Doc: https://cygwin.com/cygwin-api/func-cygwin-conv-path.html - // Src: https://github.com/cygwin/cygwin/blob/718a15ba50e0d01c79800bd658c2477f9a603540/winsup/cygwin/path.cc#L3902 - // Safety: - // * `what` should be `CCP_WIN_W_TO_POSIX` here - // * `from` is null-terminated UTF-16 path - // * `to` is buffer, the buffer size is `size`. - fn cygwin_conv_path( - what: libc::c_uint, - from: *const u16, - to: *mut u8, - size: libc::size_t, - ) -> libc::ssize_t; - } - const CCP_WIN_W_TO_POSIX: libc::c_uint = 3; - - // If `size` is 0, returns needed buffer size, including null terminator; - // or -1 if error. - // Safety: if `size` is 0, `to` is not used. - let name_len = unsafe { - cygwin_conv_path( - CCP_WIN_W_TO_POSIX, - long_path.as_ptr(), - core::ptr::null_mut(), - 0, - ) - }; - // Expect at least 1 for null terminator. - // It's not likely to return error here. - if name_len < 1 { - return None; - } - let name_len = name_len as usize; - let mut name_buffer = Vec::with_capacity(name_len); - // Safety: `name_buffer` is large enough. - let res = unsafe { - cygwin_conv_path( - CCP_WIN_W_TO_POSIX, - long_path.as_ptr(), - name_buffer.as_mut_ptr(), - name_len, - ) - }; - // It's not likely to return error here. - if res != 0 { - return None; - } - // Remove the null terminator. - unsafe { name_buffer.set_len(name_len - 1) }; - let name = OsString::from_vec(name_buffer); - Some(name) -} - -unsafe fn load_library(me: &MODULEENTRY32W) -> Option<Library> { - #[cfg(windows)] - let name = { - use super::mystd::os::windows::prelude::*; - let pos = me - .szExePath - .iter() - .position(|i| *i == 0) - .unwrap_or(me.szExePath.len()); - OsString::from_wide(&me.szExePath[..pos]) - }; - #[cfg(target_os = "cygwin")] - // Safety: the path with max length MAX_PATH always contains a null - // terminator. Don't slice it. - let name = unsafe { get_posix_path(&me.szExePath[..])? }; - - // MinGW libraries currently don't support ASLR - // (rust-lang/rust#16514), but DLLs can still be relocated around in - // the address space. It appears that addresses in debug info are - // all as-if this library was loaded at its "image base", which is a - // field in its COFF file headers. Since this is what debuginfo - // seems to list we parse the symbol table and store addresses as if - // the library was loaded at "image base" as well. - // - // The library may not be loaded at "image base", however. - // (presumably something else may be loaded there?) This is where - // the `bias` field comes into play, and we need to figure out the - // value of `bias` here. Unfortunately though it's not clear how to - // acquire this from a loaded module. What we do have, however, is - // the actual load address (`modBaseAddr`). - // - // As a bit of a cop-out for now we mmap the file, read the file - // header information, then drop the mmap. This is wasteful because - // we'll probably reopen the mmap later, but this should work well - // enough for now. - // - // Once we have the `image_base` (desired load location) and the - // `base_addr` (actual load location) we can fill in the `bias` - // (difference between the actual and desired) and then the stated - // address of each segment is the `image_base` since that's what the - // file says. - // - // For now it appears that unlike ELF/MachO we can make do with one - // segment per library, using `modBaseSize` as the whole size. - let mmap = mmap(name.as_ref())?; - let image_base = coff::get_image_base(&mmap)?; - let base_addr = me.modBaseAddr as usize; - Some(Library { - name, - bias: base_addr.wrapping_sub(image_base), - segments: vec![LibrarySegment { - stated_virtual_memory_address: image_base, - len: me.modBaseSize as usize, - }], - }) -} diff --git a/vendor/backtrace/src/symbolize/gimli/lru.rs b/vendor/backtrace/src/symbolize/gimli/lru.rs deleted file mode 100644 index b7cf5a5b..00000000 --- a/vendor/backtrace/src/symbolize/gimli/lru.rs +++ /dev/null @@ -1,75 +0,0 @@ -use core::mem::{self, MaybeUninit}; -use core::ptr; - -/// least-recently-used cache with static size -pub(crate) struct Lru<T, const N: usize> { - // SAFETY: len <= initialized values - len: usize, - arr: [MaybeUninit<T>; N], -} - -impl<T, const N: usize> Default for Lru<T, N> { - fn default() -> Self { - Lru { - len: 0, - arr: [const { MaybeUninit::uninit() }; N], - } - } -} - -impl<T, const N: usize> Lru<T, N> { - #[inline] - pub fn clear(&mut self) { - let len = self.len; - self.len = 0; - // SAFETY: we can't touch these values again due to setting self.len = 0 - unsafe { ptr::drop_in_place(ptr::addr_of_mut!(self.arr[0..len]) as *mut [T]) } - } - - #[inline] - pub fn iter(&self) -> impl Iterator<Item = &T> { - self.arr[0..self.len] - .iter() - // SAFETY: we only iterate initialized values due to our len invariant - .map(|init| unsafe { init.assume_init_ref() }) - } - - #[inline] - pub fn push_front(&mut self, value: T) -> Option<&mut T> { - if N == 0 { - return None; - } else if self.len == N { - self.len = N - 1; - // SAFETY: we maintain len invariant and bail on N == 0 - unsafe { ptr::drop_in_place(self.arr.as_mut_ptr().cast::<T>().add(N - 1)) }; - }; - let len_to_init = self.len + 1; - let mut last = MaybeUninit::new(value); - for elem in self.arr[0..len_to_init].iter_mut() { - // OPT(size): using `mem::swap` allows surprising size regressions - last = mem::replace(elem, last); - } - self.len = len_to_init; - - self.arr - .first_mut() - // SAFETY: we just pushed it - .map(|elem| unsafe { elem.assume_init_mut() }) - } - - #[inline] - pub fn move_to_front(&mut self, idx: usize) -> Option<&mut T> { - let elem = self.arr[0..self.len].get_mut(idx)?; - // SAFETY: we already bailed if the index is bad, so our slicing will be infallible, - // so it is permissible to allow the len invariant to decay, as we always restore it - let mut last = mem::replace(elem, MaybeUninit::uninit()); - for elem in self.arr[0..=idx].iter_mut() { - // OPT(size): using `mem::swap` allows surprising size regressions - last = mem::replace(elem, last); - } - self.arr - .first_mut() - // SAFETY: we have restored the len invariant - .map(|elem| unsafe { elem.assume_init_mut() }) - } -} diff --git a/vendor/backtrace/src/symbolize/gimli/macho.rs b/vendor/backtrace/src/symbolize/gimli/macho.rs deleted file mode 100644 index fcbe6098..00000000 --- a/vendor/backtrace/src/symbolize/gimli/macho.rs +++ /dev/null @@ -1,318 +0,0 @@ -use super::mystd::path::Path; -use super::{gimli, Context, Endian, EndianSlice, Mapping, Stash}; -use alloc::boxed::Box; -use alloc::sync::Arc; -use alloc::vec::Vec; -use core::convert::TryInto; -use object::macho; -use object::read::macho::{MachHeader, Nlist, Section, Segment as _}; -use object::{Bytes, NativeEndian}; - -#[cfg(target_pointer_width = "32")] -type Mach = object::macho::MachHeader32<NativeEndian>; -#[cfg(target_pointer_width = "64")] -type Mach = object::macho::MachHeader64<NativeEndian>; -type MachSegment = <Mach as MachHeader>::Segment; -type MachSection = <Mach as MachHeader>::Section; -type MachNlist = <Mach as MachHeader>::Nlist; - -impl Mapping { - // The loading path for macOS is so different we just have a completely - // different implementation of the function here. On macOS we need to go - // probing the filesystem for a bunch of files. - pub fn new(path: &Path) -> Option<Mapping> { - // First up we need to load the unique UUID which is stored in the macho - // header of the file we're reading, specified at `path`. - let map = super::mmap(path)?; - let (macho, data) = find_header(&map)?; - let endian = macho.endian().ok()?; - let uuid = macho.uuid(endian, data, 0).ok()?; - - // Next we need to look for a `*.dSYM` file. For now we just probe the - // containing directory and look around for something that matches - // `*.dSYM`. Once it's found we root through the dwarf resources that it - // contains and try to find a macho file which has a matching UUID as - // the one of our own file. If we find a match that's the dwarf file we - // want to return. - if let Some(uuid) = uuid { - if let Some(parent) = path.parent() { - if let Some(mapping) = Mapping::load_dsym(parent, uuid) { - return Some(mapping); - } - } - } - - // Looks like nothing matched our UUID, so let's at least return our own - // file. This should have the symbol table for at least some - // symbolication purposes. - Mapping::mk(map, |data, stash| { - let (macho, data) = find_header(data)?; - let endian = macho.endian().ok()?; - let obj = Object::parse(macho, endian, data)?; - Context::new(stash, obj, None, None) - }) - } - - fn load_dsym(dir: &Path, uuid: [u8; 16]) -> Option<Mapping> { - for entry in dir.read_dir().ok()? { - let entry = entry.ok()?; - let filename = match entry.file_name().into_string() { - Ok(name) => name, - Err(_) => continue, - }; - if !filename.ends_with(".dSYM") { - continue; - } - let candidates = entry.path().join("Contents/Resources/DWARF"); - if let Some(mapping) = Mapping::try_dsym_candidate(&candidates, uuid) { - return Some(mapping); - } - } - None - } - - fn try_dsym_candidate(dir: &Path, uuid: [u8; 16]) -> Option<Mapping> { - // Look for files in the `DWARF` directory which have a matching uuid to - // the original object file. If we find one then we found the debug - // information. - for entry in dir.read_dir().ok()? { - let entry = entry.ok()?; - let map = super::mmap(&entry.path())?; - let candidate = Mapping::mk(map, |data, stash| { - let (macho, data) = find_header(data)?; - let endian = macho.endian().ok()?; - let entry_uuid = macho.uuid(endian, data, 0).ok()??; - if entry_uuid != uuid { - return None; - } - let obj = Object::parse(macho, endian, data)?; - Context::new(stash, obj, None, None) - }); - if let Some(candidate) = candidate { - return Some(candidate); - } - } - - None - } -} - -fn find_header(data: &'_ [u8]) -> Option<(&'_ Mach, &'_ [u8])> { - use object::endian::BigEndian; - - let desired_cpu = || { - if cfg!(target_arch = "x86") { - Some(macho::CPU_TYPE_X86) - } else if cfg!(target_arch = "x86_64") { - Some(macho::CPU_TYPE_X86_64) - } else if cfg!(target_arch = "arm") { - Some(macho::CPU_TYPE_ARM) - } else if cfg!(target_arch = "aarch64") { - Some(macho::CPU_TYPE_ARM64) - } else { - None - } - }; - - let mut data = Bytes(data); - match data - .clone() - .read::<object::endian::U32<NativeEndian>>() - .ok()? - .get(NativeEndian) - { - macho::MH_MAGIC_64 | macho::MH_CIGAM_64 | macho::MH_MAGIC | macho::MH_CIGAM => {} - - macho::FAT_MAGIC | macho::FAT_CIGAM => { - let mut header_data = data; - let endian = BigEndian; - let header = header_data.read::<macho::FatHeader>().ok()?; - let nfat = header.nfat_arch.get(endian); - let arch = (0..nfat) - .filter_map(|_| header_data.read::<macho::FatArch32>().ok()) - .find(|arch| desired_cpu() == Some(arch.cputype.get(endian)))?; - let offset = arch.offset.get(endian); - let size = arch.size.get(endian); - data = data - .read_bytes_at(offset.try_into().ok()?, size.try_into().ok()?) - .ok()?; - } - - macho::FAT_MAGIC_64 | macho::FAT_CIGAM_64 => { - let mut header_data = data; - let endian = BigEndian; - let header = header_data.read::<macho::FatHeader>().ok()?; - let nfat = header.nfat_arch.get(endian); - let arch = (0..nfat) - .filter_map(|_| header_data.read::<macho::FatArch64>().ok()) - .find(|arch| desired_cpu() == Some(arch.cputype.get(endian)))?; - let offset = arch.offset.get(endian); - let size = arch.size.get(endian); - data = data - .read_bytes_at(offset.try_into().ok()?, size.try_into().ok()?) - .ok()?; - } - - _ => return None, - } - - Mach::parse(data.0, 0).ok().map(|h| (h, data.0)) -} - -// This is used both for executables/libraries and source object files. -pub struct Object<'a> { - endian: NativeEndian, - data: &'a [u8], - dwarf: Option<&'a [MachSection]>, - syms: Vec<(&'a [u8], u64)>, - syms_sort_by_name: bool, - // Only set for executables/libraries, and not the source object files. - object_map: Option<object::ObjectMap<'a>>, - // The outer Option is for lazy loading, and the inner Option allows load errors to be cached. - object_mappings: Box<[Option<Option<Mapping>>]>, -} - -impl<'a> Object<'a> { - fn parse(mach: &'a Mach, endian: NativeEndian, data: &'a [u8]) -> Option<Object<'a>> { - let is_object = mach.filetype(endian) == object::macho::MH_OBJECT; - let mut dwarf = None; - let mut syms = Vec::new(); - let mut syms_sort_by_name = false; - let mut commands = mach.load_commands(endian, data, 0).ok()?; - let mut object_map = None; - let mut object_mappings = Vec::new(); - while let Ok(Some(command)) = commands.next() { - if let Some((segment, section_data)) = MachSegment::from_command(command).ok()? { - // Object files should have all sections in a single unnamed segment load command. - if segment.name() == b"__DWARF" || (is_object && segment.name() == b"") { - dwarf = segment.sections(endian, section_data).ok(); - } - } else if let Some(symtab) = command.symtab().ok()? { - let symbols = symtab.symbols::<Mach, _>(endian, data).ok()?; - syms = symbols - .iter() - .filter_map(|nlist: &MachNlist| { - let name = nlist.name(endian, symbols.strings()).ok()?; - if name.len() > 0 && nlist.is_definition() { - Some((name, u64::from(nlist.n_value(endian)))) - } else { - None - } - }) - .collect(); - if is_object { - // We never search object file symbols by address. - // Instead, we already know the symbol name from the executable, and we - // need to search by name to find the matching symbol in the object file. - syms.sort_unstable_by_key(|(name, _)| *name); - syms_sort_by_name = true; - } else { - syms.sort_unstable_by_key(|(_, addr)| *addr); - let map = symbols.object_map(endian); - object_mappings.resize_with(map.objects().len(), || None); - object_map = Some(map); - } - } - } - - Some(Object { - endian, - data, - dwarf, - syms, - syms_sort_by_name, - object_map, - object_mappings: object_mappings.into_boxed_slice(), - }) - } - - pub fn section(&self, _: &Stash, name: &str) -> Option<&'a [u8]> { - let name = name.as_bytes(); - let dwarf = self.dwarf?; - let section = dwarf.into_iter().find(|section| { - let section_name = section.name(); - section_name == name || { - section_name.starts_with(b"__") - && name.starts_with(b".") - && §ion_name[2..] == &name[1..] - } - })?; - Some(section.data(self.endian, self.data).ok()?) - } - - pub fn search_symtab<'b>(&'b self, addr: u64) -> Option<&'b [u8]> { - debug_assert!(!self.syms_sort_by_name); - let i = match self.syms.binary_search_by_key(&addr, |(_, addr)| *addr) { - Ok(i) => i, - Err(i) => i.checked_sub(1)?, - }; - let (sym, _addr) = self.syms.get(i)?; - Some(sym) - } - - /// Try to load a context for an object file. - /// - /// If dsymutil was not run, then the DWARF may be found in the source object files. - pub(super) fn search_object_map<'b>(&'b mut self, addr: u64) -> Option<(&'b Context<'b>, u64)> { - // `object_map` contains a map from addresses to symbols and object paths. - // Look up the address and get a mapping for the object. - let object_map = self.object_map.as_ref()?; - let symbol = object_map.get(addr)?; - let object_index = symbol.object_index(); - let mapping = self.object_mappings.get_mut(object_index)?; - if mapping.is_none() { - // No cached mapping, so create it. - *mapping = Some(object_mapping(object_map.objects().get(object_index)?)); - } - let cx: &'b Context<'static> = &mapping.as_ref()?.as_ref()?.cx; - // Don't leak the `'static` lifetime, make sure it's scoped to just ourselves. - let cx = unsafe { core::mem::transmute::<&'b Context<'static>, &'b Context<'b>>(cx) }; - - // We must translate the address in order to be able to look it up - // in the DWARF in the object file. - debug_assert!(cx.object.syms.is_empty() || cx.object.syms_sort_by_name); - let i = cx - .object - .syms - .binary_search_by_key(&symbol.name(), |(name, _)| *name) - .ok()?; - let object_symbol = cx.object.syms.get(i)?; - let object_addr = addr - .wrapping_sub(symbol.address()) - .wrapping_add(object_symbol.1); - Some((cx, object_addr)) - } -} - -fn object_mapping(file: &object::read::ObjectMapFile<'_>) -> Option<Mapping> { - use super::mystd::ffi::OsStr; - use super::mystd::os::unix::prelude::*; - - let map = super::mmap(Path::new(OsStr::from_bytes(file.path())))?; - let member_name = file.member(); - Mapping::mk(map, |data, stash| { - let data = match member_name { - Some(member_name) => { - let archive = object::read::archive::ArchiveFile::parse(data).ok()?; - let member = archive - .members() - .filter_map(Result::ok) - .find(|m| m.name() == member_name)?; - member.data(data).ok()? - } - None => data, - }; - let (macho, data) = find_header(data)?; - let endian = macho.endian().ok()?; - let obj = Object::parse(macho, endian, data)?; - Context::new(stash, obj, None, None) - }) -} - -pub(super) fn handle_split_dwarf<'data>( - _package: Option<&gimli::DwarfPackage<EndianSlice<'data, Endian>>>, - _stash: &'data Stash, - _load: addr2line::SplitDwarfLoad<EndianSlice<'data, Endian>>, -) -> Option<Arc<gimli::Dwarf<EndianSlice<'data, Endian>>>> { - None -} diff --git a/vendor/backtrace/src/symbolize/gimli/mmap_fake.rs b/vendor/backtrace/src/symbolize/gimli/mmap_fake.rs deleted file mode 100644 index 71697fc3..00000000 --- a/vendor/backtrace/src/symbolize/gimli/mmap_fake.rs +++ /dev/null @@ -1,27 +0,0 @@ -use super::mystd::io::{Read, Seek, SeekFrom}; -use super::File; -use alloc::vec::Vec; -use core::ops::Deref; - -pub struct Mmap { - vec: Vec<u8>, -} - -impl Mmap { - pub unsafe fn map(mut file: &File, len: usize, offset: u64) -> Option<Mmap> { - let mut mmap = Mmap { - vec: Vec::with_capacity(len), - }; - file.seek(SeekFrom::Start(offset)); - file.read_to_end(&mut mmap.vec).ok()?; - Some(mmap) - } -} - -impl Deref for Mmap { - type Target = [u8]; - - fn deref(&self) -> &[u8] { - &self.vec[..] - } -} diff --git a/vendor/backtrace/src/symbolize/gimli/mmap_unix.rs b/vendor/backtrace/src/symbolize/gimli/mmap_unix.rs deleted file mode 100644 index 24ebeb3c..00000000 --- a/vendor/backtrace/src/symbolize/gimli/mmap_unix.rs +++ /dev/null @@ -1,51 +0,0 @@ -use super::mystd::fs::File; -use super::mystd::os::unix::prelude::*; -use core::ops::Deref; -use core::ptr; -use core::slice; - -#[cfg(not(all(target_os = "linux", target_env = "gnu")))] -use libc::mmap as mmap64; -#[cfg(all(target_os = "linux", target_env = "gnu"))] -use libc::mmap64; - -pub struct Mmap { - ptr: *mut libc::c_void, - len: usize, -} - -impl Mmap { - pub unsafe fn map(file: &File, len: usize, offset: u64) -> Option<Mmap> { - let ptr = unsafe { - mmap64( - ptr::null_mut(), - len, - libc::PROT_READ, - libc::MAP_PRIVATE, - file.as_raw_fd(), - offset.try_into().ok()?, - ) - }; - if ptr == libc::MAP_FAILED { - return None; - } - Some(Mmap { ptr, len }) - } -} - -impl Deref for Mmap { - type Target = [u8]; - - fn deref(&self) -> &[u8] { - unsafe { slice::from_raw_parts(self.ptr as *const u8, self.len) } - } -} - -impl Drop for Mmap { - fn drop(&mut self) { - unsafe { - let r = libc::munmap(self.ptr, self.len); - debug_assert_eq!(r, 0); - } - } -} diff --git a/vendor/backtrace/src/symbolize/gimli/mmap_windows.rs b/vendor/backtrace/src/symbolize/gimli/mmap_windows.rs deleted file mode 100644 index d3c02723..00000000 --- a/vendor/backtrace/src/symbolize/gimli/mmap_windows.rs +++ /dev/null @@ -1,67 +0,0 @@ -use super::super::super::windows_sys::*; - -use super::mystd::fs::File; -use super::mystd::os::windows::prelude::*; -use core::ffi::c_void; -use core::ops::Deref; -use core::ptr; -use core::slice; - -pub struct Mmap { - // keep the file alive to prevent it from being deleted which would cause - // us to read bad data. - _file: File, - ptr: *mut c_void, - len: usize, -} - -impl Mmap { - pub unsafe fn map(file: &File, len: usize, offset: u64) -> Option<Mmap> { - unsafe { - let file = file.try_clone().ok()?; - let mapping = CreateFileMappingA( - file.as_raw_handle(), - ptr::null_mut(), - PAGE_READONLY, - 0, - 0, - ptr::null(), - ); - if mapping.is_null() { - return None; - } - let ptr = MapViewOfFile( - mapping, - FILE_MAP_READ, - (offset >> 32) as u32, - offset as u32, - len, - ); - CloseHandle(mapping); - if ptr.Value.is_null() { - return None; - } - Some(Mmap { - _file: file, - ptr: ptr.Value, - len, - }) - } - } -} -impl Deref for Mmap { - type Target = [u8]; - - fn deref(&self) -> &[u8] { - unsafe { slice::from_raw_parts(self.ptr.cast_const().cast::<u8>(), self.len) } - } -} - -impl Drop for Mmap { - fn drop(&mut self) { - unsafe { - let r = UnmapViewOfFile(MEMORY_MAPPED_VIEW_ADDRESS { Value: self.ptr }); - debug_assert!(r != 0); - } - } -} diff --git a/vendor/backtrace/src/symbolize/gimli/parse_running_mmaps_unix.rs b/vendor/backtrace/src/symbolize/gimli/parse_running_mmaps_unix.rs deleted file mode 100644 index 5803d5dc..00000000 --- a/vendor/backtrace/src/symbolize/gimli/parse_running_mmaps_unix.rs +++ /dev/null @@ -1,304 +0,0 @@ -// Note: This file is only currently used on targets that call out to the code -// in `mod libs_dl_iterate_phdr` (e.g. linux, freebsd, ...); it may be more -// general purpose, but it hasn't been tested elsewhere. - -use super::mystd::ffi::OsString; -use super::mystd::fs::File; -use super::mystd::io::Read; -use alloc::string::String; -use alloc::vec::Vec; -use core::str::FromStr; - -#[derive(PartialEq, Eq, Debug)] -pub(super) struct MapsEntry { - /// start (inclusive) and limit (exclusive) of address range. - address: (usize, usize), - /// The perms field are the permissions for the entry - /// - /// r = read - /// w = write - /// x = execute - /// s = shared - /// p = private (copy on write) - perms: [char; 4], - /// Offset into the file (or "whatever"). - offset: u64, - /// device (major, minor) - dev: (usize, usize), - /// inode on the device. 0 indicates that no inode is associated with the memory region (e.g. uninitalized data aka BSS). - inode: usize, - /// Usually the file backing the mapping. - /// - /// Note: The man page for proc includes a note about "coordination" by - /// using readelf to see the Offset field in ELF program headers. pnkfelix - /// is not yet sure if that is intended to be a comment on pathname, or what - /// form/purpose such coordination is meant to have. - /// - /// There are also some pseudo-paths: - /// "[stack]": The initial process's (aka main thread's) stack. - /// "[stack:<tid>]": a specific thread's stack. (This was only present for a limited range of Linux verisons; it was determined to be too expensive to provide.) - /// "[vdso]": Virtual dynamically linked shared object - /// "[heap]": The process's heap - /// - /// The pathname can be blank, which means it is an anonymous mapping - /// obtained via mmap. - /// - /// Newlines in pathname are replaced with an octal escape sequence. - /// - /// The pathname may have "(deleted)" appended onto it if the file-backed - /// path has been deleted. - /// - /// Note that modifications like the latter two indicated above imply that - /// in general the pathname may be ambiguous. (I.e. you cannot tell if the - /// denoted filename actually ended with the text "(deleted)", or if that - /// was added by the maps rendering. - pathname: OsString, -} - -pub(super) fn parse_maps() -> Result<Vec<MapsEntry>, &'static str> { - let mut v = Vec::new(); - let mut proc_self_maps = - File::open("/proc/self/maps").map_err(|_| "Couldn't open /proc/self/maps")?; - let mut buf = String::new(); - let _bytes_read = proc_self_maps - .read_to_string(&mut buf) - .map_err(|_| "Couldn't read /proc/self/maps")?; - for line in buf.lines() { - v.push(line.parse()?); - } - - Ok(v) -} - -impl MapsEntry { - pub(super) fn pathname(&self) -> &OsString { - &self.pathname - } - - pub(super) fn ip_matches(&self, ip: usize) -> bool { - self.address.0 <= ip && ip < self.address.1 - } - - #[cfg(target_os = "android")] - pub(super) fn offset(&self) -> u64 { - self.offset - } -} - -impl FromStr for MapsEntry { - type Err = &'static str; - - // Format: address perms offset dev inode pathname - // e.g.: "ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]" - // e.g.: "7f5985f46000-7f5985f48000 rw-p 00039000 103:06 76021795 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2" - // e.g.: "35b1a21000-35b1a22000 rw-p 00000000 00:00 0" - // - // Note that paths may contain spaces, so we can't use `str::split` for parsing (until - // Split::remainder is stabilized #77998). - fn from_str(s: &str) -> Result<Self, Self::Err> { - let (range_str, s) = s.trim_start().split_once(' ').unwrap_or((s, "")); - if range_str.is_empty() { - return Err("Couldn't find address"); - } - - let (perms_str, s) = s.trim_start().split_once(' ').unwrap_or((s, "")); - if perms_str.is_empty() { - return Err("Couldn't find permissions"); - } - - let (offset_str, s) = s.trim_start().split_once(' ').unwrap_or((s, "")); - if offset_str.is_empty() { - return Err("Couldn't find offset"); - } - - let (dev_str, s) = s.trim_start().split_once(' ').unwrap_or((s, "")); - if dev_str.is_empty() { - return Err("Couldn't find dev"); - } - - let (inode_str, s) = s.trim_start().split_once(' ').unwrap_or((s, "")); - if inode_str.is_empty() { - return Err("Couldn't find inode"); - } - - // Pathname may be omitted in which case it will be empty - let pathname_str = s.trim_start(); - - let hex = |s| usize::from_str_radix(s, 16).map_err(|_| "Couldn't parse hex number"); - let hex64 = |s| u64::from_str_radix(s, 16).map_err(|_| "Couldn't parse hex number"); - - let address = if let Some((start, limit)) = range_str.split_once('-') { - (hex(start)?, hex(limit)?) - } else { - return Err("Couldn't parse address range"); - }; - let perms: [char; 4] = { - let mut chars = perms_str.chars(); - let mut c = || chars.next().ok_or("insufficient perms"); - let perms = [c()?, c()?, c()?, c()?]; - if chars.next().is_some() { - return Err("too many perms"); - } - perms - }; - let offset = hex64(offset_str)?; - let dev = if let Some((major, minor)) = dev_str.split_once(':') { - (hex(major)?, hex(minor)?) - } else { - return Err("Couldn't parse dev"); - }; - let inode = hex(inode_str)?; - let pathname = pathname_str.into(); - - Ok(MapsEntry { - address, - perms, - offset, - dev, - inode, - pathname, - }) - } -} - -// Make sure we can parse 64-bit sample output if we're on a 64-bit target. -#[cfg(target_pointer_width = "64")] -#[test] -fn check_maps_entry_parsing_64bit() { - assert_eq!( - "ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 \ - [vsyscall]" - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0xffffffffff600000, 0xffffffffff601000), - perms: ['-', '-', 'x', 'p'], - offset: 0x00000000, - dev: (0x00, 0x00), - inode: 0x0, - pathname: "[vsyscall]".into(), - } - ); - - assert_eq!( - "7f5985f46000-7f5985f48000 rw-p 00039000 103:06 76021795 \ - /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2" - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0x7f5985f46000, 0x7f5985f48000), - perms: ['r', 'w', '-', 'p'], - offset: 0x00039000, - dev: (0x103, 0x06), - inode: 0x76021795, - pathname: "/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2".into(), - } - ); - assert_eq!( - "35b1a21000-35b1a22000 rw-p 00000000 00:00 0" - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0x35b1a21000, 0x35b1a22000), - perms: ['r', 'w', '-', 'p'], - offset: 0x00000000, - dev: (0x00, 0x00), - inode: 0x0, - pathname: Default::default(), - } - ); -} - -// (This output was taken from a 32-bit machine, but will work on any target) -#[test] -fn check_maps_entry_parsing_32bit() { - /* Example snippet of output: - 08056000-08077000 rw-p 00000000 00:00 0 [heap] - b7c79000-b7e02000 r--p 00000000 08:01 60662705 /usr/lib/locale/locale-archive - b7e02000-b7e03000 rw-p 00000000 00:00 0 - */ - assert_eq!( - "08056000-08077000 rw-p 00000000 00:00 0 \ - [heap]" - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0x08056000, 0x08077000), - perms: ['r', 'w', '-', 'p'], - offset: 0x00000000, - dev: (0x00, 0x00), - inode: 0x0, - pathname: "[heap]".into(), - } - ); - - assert_eq!( - "b7c79000-b7e02000 r--p 00000000 08:01 60662705 \ - /usr/lib/locale/locale-archive" - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0xb7c79000, 0xb7e02000), - perms: ['r', '-', '-', 'p'], - offset: 0x00000000, - dev: (0x08, 0x01), - inode: 0x60662705, - pathname: "/usr/lib/locale/locale-archive".into(), - } - ); - assert_eq!( - "b7e02000-b7e03000 rw-p 00000000 00:00 0" - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0xb7e02000, 0xb7e03000), - perms: ['r', 'w', '-', 'p'], - offset: 0x00000000, - dev: (0x00, 0x00), - inode: 0x0, - pathname: Default::default(), - } - ); - assert_eq!( - "b7c79000-b7e02000 r--p 00000000 08:01 60662705 \ - /executable/path/with some spaces" - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0xb7c79000, 0xb7e02000), - perms: ['r', '-', '-', 'p'], - offset: 0x00000000, - dev: (0x08, 0x01), - inode: 0x60662705, - pathname: "/executable/path/with some spaces".into(), - } - ); - assert_eq!( - "b7c79000-b7e02000 r--p 00000000 08:01 60662705 \ - /executable/path/with multiple-continuous spaces " - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0xb7c79000, 0xb7e02000), - perms: ['r', '-', '-', 'p'], - offset: 0x00000000, - dev: (0x08, 0x01), - inode: 0x60662705, - pathname: "/executable/path/with multiple-continuous spaces ".into(), - } - ); - assert_eq!( - " b7c79000-b7e02000 r--p 00000000 08:01 60662705 \ - /executable/path/starts-with-spaces" - .parse::<MapsEntry>() - .unwrap(), - MapsEntry { - address: (0xb7c79000, 0xb7e02000), - perms: ['r', '-', '-', 'p'], - offset: 0x00000000, - dev: (0x08, 0x01), - inode: 0x60662705, - pathname: "/executable/path/starts-with-spaces".into(), - } - ); -} diff --git a/vendor/backtrace/src/symbolize/gimli/stash.rs b/vendor/backtrace/src/symbolize/gimli/stash.rs deleted file mode 100644 index 5ec06e24..00000000 --- a/vendor/backtrace/src/symbolize/gimli/stash.rs +++ /dev/null @@ -1,51 +0,0 @@ -#![allow(clippy::all)] -// only used on Linux right now, so allow dead code elsewhere -#![cfg_attr(not(target_os = "linux"), allow(dead_code))] - -use super::Mmap; -use alloc::vec; -use alloc::vec::Vec; -use core::cell::UnsafeCell; - -/// A simple arena allocator for byte buffers. -pub struct Stash { - buffers: UnsafeCell<Vec<Vec<u8>>>, - mmaps: UnsafeCell<Vec<Mmap>>, -} - -impl Stash { - pub fn new() -> Stash { - Stash { - buffers: UnsafeCell::new(Vec::new()), - mmaps: UnsafeCell::new(Vec::new()), - } - } - - /// Allocates a buffer of the specified size and returns a mutable reference - /// to it. - pub fn allocate(&self, size: usize) -> &mut [u8] { - // SAFETY: this is the only function that ever constructs a mutable - // reference to `self.buffers`. - let buffers = unsafe { &mut *self.buffers.get() }; - let i = buffers.len(); - buffers.push(vec![0; size]); - // SAFETY: we never remove elements from `self.buffers`, so a reference - // to the data inside any buffer will live as long as `self` does. - &mut buffers[i] - } - - /// Stores a `Mmap` for the lifetime of this `Stash`, returning a pointer - /// which is scoped to just this lifetime. - pub fn cache_mmap(&self, map: Mmap) -> &[u8] { - // SAFETY: this is the only location for a mutable pointer to - // `mmaps`, and this structure isn't threadsafe to shared across - // threads either. We also never remove elements from `self.mmaps`, - // so a reference to the data inside the map will live as long as - // `self` does. - unsafe { - let mmaps = &mut *self.mmaps.get(); - mmaps.push(map); - mmaps.last().unwrap() - } - } -} diff --git a/vendor/backtrace/src/symbolize/gimli/xcoff.rs b/vendor/backtrace/src/symbolize/gimli/xcoff.rs deleted file mode 100644 index 18c61cbd..00000000 --- a/vendor/backtrace/src/symbolize/gimli/xcoff.rs +++ /dev/null @@ -1,188 +0,0 @@ -use super::mystd::ffi::OsStr; -use super::mystd::os::unix::ffi::OsStrExt; -use super::mystd::path::Path; -use super::{gimli, Context, Endian, EndianSlice, Mapping, Stash}; -use alloc::sync::Arc; -use alloc::vec::Vec; -use core::ops::Deref; -use core::str; -use object::read::archive::ArchiveFile; -use object::read::xcoff::{FileHeader, SectionHeader, XcoffFile, XcoffSymbol}; -use object::Object as _; -use object::ObjectSection as _; -use object::ObjectSymbol as _; -use object::SymbolFlags; - -#[cfg(target_pointer_width = "32")] -type Xcoff = object::xcoff::FileHeader32; -#[cfg(target_pointer_width = "64")] -type Xcoff = object::xcoff::FileHeader64; - -impl Mapping { - pub fn new(path: &Path, member_name: &OsStr) -> Option<Mapping> { - let map = super::mmap(path)?; - Mapping::mk(map, |data, stash| { - if member_name.is_empty() { - Context::new(stash, Object::parse(data)?, None, None) - } else { - let archive = ArchiveFile::parse(data).ok()?; - for member in archive - .members() - .filter_map(|m| m.ok()) - .filter(|m| OsStr::from_bytes(m.name()) == member_name) - { - let member_data = member.data(data).ok()?; - if let Some(obj) = Object::parse(member_data) { - return Context::new(stash, obj, None, None); - } - } - None - } - }) - } -} - -struct ParsedSym<'a> { - address: u64, - size: u64, - name: &'a str, -} - -pub struct Object<'a> { - syms: Vec<ParsedSym<'a>>, - file: XcoffFile<'a, Xcoff>, -} - -pub struct Image { - pub offset: usize, - pub base: u64, - pub size: usize, -} - -pub fn parse_xcoff(data: &[u8]) -> Option<Image> { - let mut offset = 0; - let header = Xcoff::parse(data, &mut offset).ok()?; - let _ = header.aux_header(data, &mut offset).ok()?; - let sections = header.sections(data, &mut offset).ok()?; - if let Some(section) = sections.iter().find(|s| { - if let Ok(name) = str::from_utf8(&s.s_name()[0..5]) { - name == ".text" - } else { - false - } - }) { - Some(Image { - offset: section.s_scnptr() as usize, - base: section.s_paddr() as u64, - size: section.s_size() as usize, - }) - } else { - None - } -} - -pub fn parse_image(path: &Path, member_name: &OsStr) -> Option<Image> { - let map = super::mmap(path)?; - let data = map.deref(); - if member_name.is_empty() { - return parse_xcoff(data); - } else { - let archive = ArchiveFile::parse(data).ok()?; - for member in archive - .members() - .filter_map(|m| m.ok()) - .filter(|m| OsStr::from_bytes(m.name()) == member_name) - { - let member_data = member.data(data).ok()?; - if let Some(image) = parse_xcoff(member_data) { - return Some(image); - } - } - None - } -} - -impl<'a> Object<'a> { - fn get_concrete_size(file: &XcoffFile<'a, Xcoff>, sym: &XcoffSymbol<'a, '_, Xcoff>) -> u64 { - match sym.flags() { - SymbolFlags::Xcoff { - n_sclass: _, - x_smtyp: _, - x_smclas: _, - containing_csect: Some(index), - } => { - if let Ok(tgt_sym) = file.symbol_by_index(index) { - Self::get_concrete_size(file, &tgt_sym) - } else { - 0 - } - } - _ => sym.size(), - } - } - - fn parse(data: &'a [u8]) -> Option<Object<'a>> { - let file = XcoffFile::parse(data).ok()?; - let mut syms = file - .symbols() - .filter_map(|sym| { - let name = sym.name().map_or("", |v| v); - let address = sym.address(); - let size = Self::get_concrete_size(&file, &sym); - if name == ".text" || name == ".data" { - // We don't want to include ".text" and ".data" symbols. - // If they are included, since their ranges cover other - // symbols, when searching a symbol for a given address, - // ".text" or ".data" is returned. That's not what we expect. - None - } else { - Some(ParsedSym { - address, - size, - name, - }) - } - }) - .collect::<Vec<_>>(); - syms.sort_by_key(|s| s.address); - Some(Object { syms, file }) - } - - pub fn section(&self, _: &Stash, name: &str) -> Option<&'a [u8]> { - Some(self.file.section_by_name(name)?.data().ok()?) - } - - pub fn search_symtab<'b>(&'b self, addr: u64) -> Option<&'b [u8]> { - // Symbols, except ".text" and ".data", are sorted and are not overlapped each other, - // so we can just perform a binary search here. - let i = match self.syms.binary_search_by_key(&addr, |sym| sym.address) { - Ok(i) => i, - Err(i) => i.checked_sub(1)?, - }; - let sym = self.syms.get(i)?; - if (sym.address..sym.address + sym.size).contains(&addr) { - // On AIX, for a function call, for example, `foo()`, we have - // two symbols `foo` and `.foo`. `foo` references the function - // descriptor and `.foo` references the function entry. - // See https://www.ibm.com/docs/en/xl-fortran-aix/16.1.0?topic=calls-linkage-convention-function - // for more information. - // We trim the prefix `.` here, so that the rust demangler can work - // properly. - Some(sym.name.trim_start_matches(".").as_bytes()) - } else { - None - } - } - - pub(super) fn search_object_map(&self, _addr: u64) -> Option<(&Context<'_>, u64)> { - None - } -} - -pub(super) fn handle_split_dwarf<'data>( - _package: Option<&gimli::DwarfPackage<EndianSlice<'data, Endian>>>, - _stash: &'data Stash, - _load: addr2line::SplitDwarfLoad<EndianSlice<'data, Endian>>, -) -> Option<Arc<gimli::Dwarf<EndianSlice<'data, Endian>>>> { - None -} diff --git a/vendor/backtrace/src/symbolize/miri.rs b/vendor/backtrace/src/symbolize/miri.rs deleted file mode 100644 index 5b0dc308..00000000 --- a/vendor/backtrace/src/symbolize/miri.rs +++ /dev/null @@ -1,56 +0,0 @@ -use core::ffi::c_void; -use core::marker::PhantomData; - -use super::super::backtrace::miri::{resolve_addr, Frame}; -use super::BytesOrWideString; -use super::{ResolveWhat, SymbolName}; - -pub unsafe fn resolve(what: ResolveWhat<'_>, cb: &mut dyn FnMut(&super::Symbol)) { - let sym = match what { - ResolveWhat::Address(addr) => Symbol { - inner: resolve_addr(addr), - _unused: PhantomData, - }, - ResolveWhat::Frame(frame) => Symbol { - inner: frame.inner.clone(), - _unused: PhantomData, - }, - }; - cb(&super::Symbol { inner: sym }) -} - -pub struct Symbol<'a> { - inner: Frame, - _unused: PhantomData<&'a ()>, -} - -impl<'a> Symbol<'a> { - pub fn name(&self) -> Option<SymbolName<'_>> { - Some(SymbolName::new(&self.inner.inner.name)) - } - - pub fn addr(&self) -> Option<*mut c_void> { - Some(self.inner.addr) - } - - pub fn filename_raw(&self) -> Option<BytesOrWideString<'_>> { - Some(BytesOrWideString::Bytes(&self.inner.inner.filename)) - } - - pub fn lineno(&self) -> Option<u32> { - Some(self.inner.inner.lineno) - } - - pub fn colno(&self) -> Option<u32> { - Some(self.inner.inner.colno) - } - - #[cfg(feature = "std")] - pub fn filename(&self) -> Option<&std::path::Path> { - Some(std::path::Path::new( - core::str::from_utf8(&self.inner.inner.filename).unwrap(), - )) - } -} - -pub unsafe fn clear_symbol_cache() {} diff --git a/vendor/backtrace/src/symbolize/mod.rs b/vendor/backtrace/src/symbolize/mod.rs deleted file mode 100644 index 137d2ea3..00000000 --- a/vendor/backtrace/src/symbolize/mod.rs +++ /dev/null @@ -1,450 +0,0 @@ -use core::{fmt, str}; - -cfg_if::cfg_if! { - if #[cfg(feature = "std")] { - use std::path::Path; - use std::prelude::v1::*; - } -} - -use super::backtrace::Frame; -use super::types::BytesOrWideString; -use core::ffi::c_void; -use rustc_demangle::{try_demangle, Demangle}; - -/// Resolve an address to a symbol, passing the symbol to the specified -/// closure. -/// -/// This function will look up the given address in areas such as the local -/// symbol table, dynamic symbol table, or DWARF debug info (depending on the -/// activated implementation) to find symbols to yield. -/// -/// The closure may not be called if resolution could not be performed, and it -/// also may be called more than once in the case of inlined functions. -/// -/// Symbols yielded represent the execution at the specified `addr`, returning -/// file/line pairs for that address (if available). -/// -/// Note that if you have a `Frame` then it's recommended to use the -/// `resolve_frame` function instead of this one. -/// -/// # Required features -/// -/// This function requires the `std` feature of the `backtrace` crate to be -/// enabled, and the `std` feature is enabled by default. -/// -/// # Panics -/// -/// This function strives to never panic, but if the `cb` provided panics then -/// some platforms will force a double panic to abort the process. Some -/// platforms use a C library which internally uses callbacks which cannot be -/// unwound through, so panicking from `cb` may trigger a process abort. -/// -/// # Example -/// -/// ``` -/// extern crate backtrace; -/// -/// fn main() { -/// backtrace::trace(|frame| { -/// let ip = frame.ip(); -/// -/// backtrace::resolve(ip, |symbol| { -/// // ... -/// }); -/// -/// false // only look at the top frame -/// }); -/// } -/// ``` -#[cfg(feature = "std")] -pub fn resolve<F: FnMut(&Symbol)>(addr: *mut c_void, cb: F) { - let _guard = crate::lock::lock(); - unsafe { resolve_unsynchronized(addr, cb) } -} - -/// Resolve a previously captured frame to a symbol, passing the symbol to the -/// specified closure. -/// -/// This function performs the same function as `resolve` except that it takes a -/// `Frame` as an argument instead of an address. This can allow some platform -/// implementations of backtracing to provide more accurate symbol information -/// or information about inline frames for example. It's recommended to use this -/// if you can. -/// -/// # Required features -/// -/// This function requires the `std` feature of the `backtrace` crate to be -/// enabled, and the `std` feature is enabled by default. -/// -/// # Panics -/// -/// This function strives to never panic, but if the `cb` provided panics then -/// some platforms will force a double panic to abort the process. Some -/// platforms use a C library which internally uses callbacks which cannot be -/// unwound through, so panicking from `cb` may trigger a process abort. -/// -/// # Example -/// -/// ``` -/// extern crate backtrace; -/// -/// fn main() { -/// backtrace::trace(|frame| { -/// backtrace::resolve_frame(frame, |symbol| { -/// // ... -/// }); -/// -/// false // only look at the top frame -/// }); -/// } -/// ``` -#[cfg(feature = "std")] -pub fn resolve_frame<F: FnMut(&Symbol)>(frame: &Frame, cb: F) { - let _guard = crate::lock::lock(); - unsafe { resolve_frame_unsynchronized(frame, cb) } -} - -pub enum ResolveWhat<'a> { - Address(*mut c_void), - Frame(&'a Frame), -} - -impl<'a> ResolveWhat<'a> { - #[allow(dead_code)] - fn address_or_ip(&self) -> *mut c_void { - match self { - ResolveWhat::Address(a) => adjust_ip(*a), - ResolveWhat::Frame(f) => adjust_ip(f.ip()), - } - } -} - -// IP values from stack frames are typically (always?) the instruction -// *after* the call that's the actual stack trace. Symbolizing this on -// causes the filename/line number to be one ahead and perhaps into -// the void if it's near the end of the function. -// -// This appears to basically always be the case on all platforms, so we always -// subtract one from a resolved ip to resolve it to the previous call -// instruction instead of the instruction being returned to. -// -// Ideally we would not do this. Ideally we would require callers of the -// `resolve` APIs here to manually do the -1 and account that they want location -// information for the *previous* instruction, not the current. Ideally we'd -// also expose on `Frame` if we are indeed the address of the next instruction -// or the current. -// -// For now though this is a pretty niche concern so we just internally always -// subtract one. Consumers should keep working and getting pretty good results, -// so we should be good enough. -fn adjust_ip(a: *mut c_void) -> *mut c_void { - if a.is_null() { - a - } else { - (a as usize - 1) as *mut c_void - } -} - -/// Same as `resolve`, only unsafe as it's unsynchronized. -/// -/// This function does not have synchronization guarantees but is available when -/// the `std` feature of this crate isn't compiled in. See the `resolve` -/// function for more documentation and examples. -/// -/// # Panics -/// -/// See information on `resolve` for caveats on `cb` panicking. -pub unsafe fn resolve_unsynchronized<F>(addr: *mut c_void, mut cb: F) -where - F: FnMut(&Symbol), -{ - unsafe { imp::resolve(ResolveWhat::Address(addr), &mut cb) } -} - -/// Same as `resolve_frame`, only unsafe as it's unsynchronized. -/// -/// This function does not have synchronization guarantees but is available -/// when the `std` feature of this crate isn't compiled in. See the -/// `resolve_frame` function for more documentation and examples. -/// -/// # Panics -/// -/// See information on `resolve_frame` for caveats on `cb` panicking. -pub unsafe fn resolve_frame_unsynchronized<F>(frame: &Frame, mut cb: F) -where - F: FnMut(&Symbol), -{ - unsafe { imp::resolve(ResolveWhat::Frame(frame), &mut cb) } -} - -/// A trait representing the resolution of a symbol in a file. -/// -/// This trait is yielded as a trait object to the closure given to the -/// `backtrace::resolve` function, and it is virtually dispatched as it's -/// unknown which implementation is behind it. -/// -/// A symbol can give contextual information about a function, for example the -/// name, filename, line number, precise address, etc. Not all information is -/// always available in a symbol, however, so all methods return an `Option`. -pub struct Symbol { - // TODO: this lifetime bound needs to be persisted eventually to `Symbol`, - // but that's currently a breaking change. For now this is safe since - // `Symbol` is only ever handed out by reference and can't be cloned. - inner: imp::Symbol<'static>, -} - -impl Symbol { - /// Returns the name of this function. - /// - /// The returned structure can be used to query various properties about the - /// symbol name: - /// - /// * The `Display` implementation will print out the demangled symbol. - /// * The raw `str` value of the symbol can be accessed (if it's valid - /// utf-8). - /// * The raw bytes for the symbol name can be accessed. - pub fn name(&self) -> Option<SymbolName<'_>> { - self.inner.name() - } - - /// Returns the starting address of this function. - pub fn addr(&self) -> Option<*mut c_void> { - self.inner.addr() - } - - /// Returns the raw filename as a slice. This is mainly useful for `no_std` - /// environments. - pub fn filename_raw(&self) -> Option<BytesOrWideString<'_>> { - self.inner.filename_raw() - } - - /// Returns the column number for where this symbol is currently executing. - /// - /// Only gimli currently provides a value here and even then only if `filename` - /// returns `Some`, and so it is then consequently subject to similar caveats. - pub fn colno(&self) -> Option<u32> { - self.inner.colno() - } - - /// Returns the line number for where this symbol is currently executing. - /// - /// This return value is typically `Some` if `filename` returns `Some`, and - /// is consequently subject to similar caveats. - pub fn lineno(&self) -> Option<u32> { - self.inner.lineno() - } - - /// Returns the file name where this function was defined. - /// - /// This is currently only available when libbacktrace or gimli is being - /// used (e.g. unix platforms other) and when a binary is compiled with - /// debuginfo. If neither of these conditions is met then this will likely - /// return `None`. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - #[cfg(feature = "std")] - #[allow(unreachable_code)] - pub fn filename(&self) -> Option<&Path> { - self.inner.filename() - } -} - -impl fmt::Debug for Symbol { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - let mut d = f.debug_struct("Symbol"); - if let Some(name) = self.name() { - d.field("name", &name); - } - if let Some(addr) = self.addr() { - d.field("addr", &addr); - } - - #[cfg(feature = "std")] - { - if let Some(filename) = self.filename() { - d.field("filename", &filename); - } - } - - if let Some(lineno) = self.lineno() { - d.field("lineno", &lineno); - } - d.finish() - } -} - -cfg_if::cfg_if! { - if #[cfg(feature = "cpp_demangle")] { - // Maybe a parsed C++ symbol, if parsing the mangled symbol as Rust - // failed. - struct OptionCppSymbol<'a>(Option<::cpp_demangle::BorrowedSymbol<'a>>); - - impl<'a> OptionCppSymbol<'a> { - fn parse(input: &'a [u8]) -> OptionCppSymbol<'a> { - OptionCppSymbol(::cpp_demangle::BorrowedSymbol::new(input).ok()) - } - - fn none() -> OptionCppSymbol<'a> { - OptionCppSymbol(None) - } - } - } -} - -/// A wrapper around a symbol name to provide ergonomic accessors to the -/// demangled name, the raw bytes, the raw string, etc. -pub struct SymbolName<'a> { - bytes: &'a [u8], - demangled: Option<Demangle<'a>>, - #[cfg(feature = "cpp_demangle")] - cpp_demangled: OptionCppSymbol<'a>, -} - -impl<'a> SymbolName<'a> { - /// Creates a new symbol name from the raw underlying bytes. - pub fn new(bytes: &'a [u8]) -> SymbolName<'a> { - let str_bytes = str::from_utf8(bytes).ok(); - let demangled = str_bytes.and_then(|s| try_demangle(s).ok()); - - #[cfg(feature = "cpp_demangle")] - let cpp = if demangled.is_none() { - OptionCppSymbol::parse(bytes) - } else { - OptionCppSymbol::none() - }; - - SymbolName { - bytes, - demangled, - #[cfg(feature = "cpp_demangle")] - cpp_demangled: cpp, - } - } - - /// Returns the raw (mangled) symbol name as a `str` if the symbol is valid utf-8. - /// - /// Use the `Display` implementation if you want the demangled version. - pub fn as_str(&self) -> Option<&'a str> { - self.demangled - .as_ref() - .map(|s| s.as_str()) - .or_else(|| str::from_utf8(self.bytes).ok()) - } - - /// Returns the raw symbol name as a list of bytes - pub fn as_bytes(&self) -> &'a [u8] { - self.bytes - } -} - -fn format_symbol_name( - fmt: fn(&str, &mut fmt::Formatter<'_>) -> fmt::Result, - mut bytes: &[u8], - f: &mut fmt::Formatter<'_>, -) -> fmt::Result { - while bytes.len() > 0 { - match str::from_utf8(bytes) { - Ok(name) => { - fmt(name, f)?; - break; - } - Err(err) => { - fmt("\u{FFFD}", f)?; - - match err.error_len() { - Some(len) => bytes = &bytes[err.valid_up_to() + len..], - None => break, - } - } - } - } - Ok(()) -} - -impl<'a> fmt::Display for SymbolName<'a> { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - if let Some(ref s) = self.demangled { - return s.fmt(f); - } - - #[cfg(feature = "cpp_demangle")] - { - if let Some(ref cpp) = self.cpp_demangled.0 { - return cpp.fmt(f); - } - } - - format_symbol_name(fmt::Display::fmt, self.bytes, f) - } -} - -impl<'a> fmt::Debug for SymbolName<'a> { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - if let Some(ref s) = self.demangled { - return s.fmt(f); - } - - #[cfg(all(feature = "std", feature = "cpp_demangle"))] - { - use std::fmt::Write; - - // This may to print if the demangled symbol isn't actually - // valid, so handle the error here gracefully by not propagating - // it outwards. - if let Some(ref cpp) = self.cpp_demangled.0 { - let mut s = String::new(); - if write!(s, "{cpp}").is_ok() { - return s.fmt(f); - } - } - } - - format_symbol_name(fmt::Debug::fmt, self.bytes, f) - } -} - -/// Attempt to reclaim that cached memory used to symbolicate addresses. -/// -/// This method will attempt to release any global data structures that have -/// otherwise been cached globally or in the thread which typically represent -/// parsed DWARF information or similar. -/// -/// # Caveats -/// -/// While this function is always available it doesn't actually do anything on -/// most implementations. Libraries like dbghelp or libbacktrace do not provide -/// facilities to deallocate state and manage the allocated memory. For now the -/// `std` feature of this crate is the only feature where this -/// function has any effect. -#[cfg(feature = "std")] -pub fn clear_symbol_cache() { - let _guard = crate::lock::lock(); - unsafe { - imp::clear_symbol_cache(); - } -} - -cfg_if::cfg_if! { - if #[cfg(miri)] { - mod miri; - use miri as imp; - } else if #[cfg(all(windows, target_env = "msvc", not(target_vendor = "uwp")))] { - mod dbghelp; - use dbghelp as imp; - } else if #[cfg(all( - any(unix, all(windows, target_env = "gnu")), - not(target_vendor = "uwp"), - not(target_os = "emscripten"), - any(not(backtrace_in_libstd), feature = "backtrace"), - ))] { - mod gimli; - use gimli as imp; - } else { - mod noop; - use noop as imp; - } -} diff --git a/vendor/backtrace/src/symbolize/noop.rs b/vendor/backtrace/src/symbolize/noop.rs deleted file mode 100644 index c5333653..00000000 --- a/vendor/backtrace/src/symbolize/noop.rs +++ /dev/null @@ -1,41 +0,0 @@ -//! Empty symbolication strategy used to compile for platforms that have no -//! support. - -use super::{BytesOrWideString, ResolveWhat, SymbolName}; -use core::ffi::c_void; -use core::marker; - -pub unsafe fn resolve(_addr: ResolveWhat<'_>, _cb: &mut dyn FnMut(&super::Symbol)) {} - -pub struct Symbol<'a> { - _marker: marker::PhantomData<&'a i32>, -} - -impl Symbol<'_> { - pub fn name(&self) -> Option<SymbolName<'_>> { - None - } - - pub fn addr(&self) -> Option<*mut c_void> { - None - } - - pub fn filename_raw(&self) -> Option<BytesOrWideString<'_>> { - None - } - - #[cfg(feature = "std")] - pub fn filename(&self) -> Option<&::std::path::Path> { - None - } - - pub fn lineno(&self) -> Option<u32> { - None - } - - pub fn colno(&self) -> Option<u32> { - None - } -} - -pub unsafe fn clear_symbol_cache() {} diff --git a/vendor/backtrace/src/types.rs b/vendor/backtrace/src/types.rs deleted file mode 100644 index c419247a..00000000 --- a/vendor/backtrace/src/types.rs +++ /dev/null @@ -1,83 +0,0 @@ -//! Platform dependent types. - -cfg_if::cfg_if! { - if #[cfg(feature = "std")] { - use std::borrow::Cow; - use std::fmt; - use std::path::PathBuf; - use std::prelude::v1::*; - use std::str; - } -} - -/// A platform independent representation of a string. When working with `std` -/// enabled it is recommended to the convenience methods for providing -/// conversions to `std` types. -#[derive(Debug)] -pub enum BytesOrWideString<'a> { - /// A slice, typically provided on Unix platforms. - Bytes(&'a [u8]), - /// Wide strings typically from Windows. - Wide(&'a [u16]), -} - -#[cfg(feature = "std")] -impl<'a> BytesOrWideString<'a> { - /// Lossy converts to a `Cow<str>`, will allocate if `Bytes` is not valid - /// UTF-8 or if `BytesOrWideString` is `Wide`. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn to_str_lossy(&self) -> Cow<'a, str> { - use self::BytesOrWideString::*; - - match *self { - Bytes(slice) => String::from_utf8_lossy(slice), - Wide(wide) => Cow::Owned(String::from_utf16_lossy(wide)), - } - } - - /// Provides a `Path` representation of `BytesOrWideString`. - /// - /// # Required features - /// - /// This function requires the `std` feature of the `backtrace` crate to be - /// enabled, and the `std` feature is enabled by default. - pub fn into_path_buf(self) -> PathBuf { - #[cfg(unix)] - { - use std::ffi::OsStr; - use std::os::unix::ffi::OsStrExt; - - if let BytesOrWideString::Bytes(slice) = self { - return PathBuf::from(OsStr::from_bytes(slice)); - } - } - - #[cfg(windows)] - { - use std::ffi::OsString; - use std::os::windows::ffi::OsStringExt; - - if let BytesOrWideString::Wide(slice) = self { - return PathBuf::from(OsString::from_wide(slice)); - } - } - - if let BytesOrWideString::Bytes(b) = self { - if let Ok(s) = str::from_utf8(b) { - return PathBuf::from(s); - } - } - unreachable!() - } -} - -#[cfg(feature = "std")] -impl<'a> fmt::Display for BytesOrWideString<'a> { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - self.to_str_lossy().fmt(f) - } -} diff --git a/vendor/backtrace/src/windows_sys.rs b/vendor/backtrace/src/windows_sys.rs deleted file mode 100644 index 443a1696..00000000 --- a/vendor/backtrace/src/windows_sys.rs +++ /dev/null @@ -1,668 +0,0 @@ -// Bindings generated by `windows-bindgen` 0.58.0 - -#![allow( - non_snake_case, - non_upper_case_globals, - non_camel_case_types, - dead_code, - clippy::all -)] -windows_targets::link!("dbghelp.dll" "system" fn EnumerateLoadedModulesW64(hprocess : HANDLE, enumloadedmodulescallback : PENUMLOADED_MODULES_CALLBACKW64, usercontext : *const core::ffi::c_void) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn StackWalk64(machinetype : u32, hprocess : HANDLE, hthread : HANDLE, stackframe : *mut STACKFRAME64, contextrecord : *mut core::ffi::c_void, readmemoryroutine : PREAD_PROCESS_MEMORY_ROUTINE64, functiontableaccessroutine : PFUNCTION_TABLE_ACCESS_ROUTINE64, getmodulebaseroutine : PGET_MODULE_BASE_ROUTINE64, translateaddress : PTRANSLATE_ADDRESS_ROUTINE64) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn StackWalkEx(machinetype : u32, hprocess : HANDLE, hthread : HANDLE, stackframe : *mut STACKFRAME_EX, contextrecord : *mut core::ffi::c_void, readmemoryroutine : PREAD_PROCESS_MEMORY_ROUTINE64, functiontableaccessroutine : PFUNCTION_TABLE_ACCESS_ROUTINE64, getmodulebaseroutine : PGET_MODULE_BASE_ROUTINE64, translateaddress : PTRANSLATE_ADDRESS_ROUTINE64, flags : u32) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn SymAddrIncludeInlineTrace(hprocess : HANDLE, address : u64) -> u32); -windows_targets::link!("dbghelp.dll" "system" fn SymFromAddrW(hprocess : HANDLE, address : u64, displacement : *mut u64, symbol : *mut SYMBOL_INFOW) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn SymFromInlineContextW(hprocess : HANDLE, address : u64, inlinecontext : u32, displacement : *mut u64, symbol : *mut SYMBOL_INFOW) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn SymFunctionTableAccess64(hprocess : HANDLE, addrbase : u64) -> *mut core::ffi::c_void); -windows_targets::link!("dbghelp.dll" "system" fn SymGetLineFromAddrW64(hprocess : HANDLE, dwaddr : u64, pdwdisplacement : *mut u32, line : *mut IMAGEHLP_LINEW64) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn SymGetLineFromInlineContextW(hprocess : HANDLE, dwaddr : u64, inlinecontext : u32, qwmodulebaseaddress : u64, pdwdisplacement : *mut u32, line : *mut IMAGEHLP_LINEW64) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn SymGetModuleBase64(hprocess : HANDLE, qwaddr : u64) -> u64); -windows_targets::link!("dbghelp.dll" "system" fn SymGetOptions() -> u32); -windows_targets::link!("dbghelp.dll" "system" fn SymGetSearchPathW(hprocess : HANDLE, searchpatha : PWSTR, searchpathlength : u32) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn SymInitializeW(hprocess : HANDLE, usersearchpath : PCWSTR, finvadeprocess : BOOL) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn SymQueryInlineTrace(hprocess : HANDLE, startaddress : u64, startcontext : u32, startretaddress : u64, curaddress : u64, curcontext : *mut u32, curframeindex : *mut u32) -> BOOL); -windows_targets::link!("dbghelp.dll" "system" fn SymSetOptions(symoptions : u32) -> u32); -windows_targets::link!("dbghelp.dll" "system" fn SymSetSearchPathW(hprocess : HANDLE, searchpatha : PCWSTR) -> BOOL); -windows_targets::link!("kernel32.dll" "system" fn CloseHandle(hobject : HANDLE) -> BOOL); -windows_targets::link!("kernel32.dll" "system" fn CreateFileMappingA(hfile : HANDLE, lpfilemappingattributes : *const SECURITY_ATTRIBUTES, flprotect : PAGE_PROTECTION_FLAGS, dwmaximumsizehigh : u32, dwmaximumsizelow : u32, lpname : PCSTR) -> HANDLE); -windows_targets::link!("kernel32.dll" "system" fn CreateMutexA(lpmutexattributes : *const SECURITY_ATTRIBUTES, binitialowner : BOOL, lpname : PCSTR) -> HANDLE); -windows_targets::link!("kernel32.dll" "system" fn CreateToolhelp32Snapshot(dwflags : CREATE_TOOLHELP_SNAPSHOT_FLAGS, th32processid : u32) -> HANDLE); -windows_targets::link!("kernel32.dll" "system" fn GetCurrentProcess() -> HANDLE); -windows_targets::link!("kernel32.dll" "system" fn GetCurrentProcessId() -> u32); -windows_targets::link!("kernel32.dll" "system" fn GetCurrentThread() -> HANDLE); -windows_targets::link!("kernel32.dll" "system" fn GetProcAddress(hmodule : HMODULE, lpprocname : PCSTR) -> FARPROC); -windows_targets::link!("kernel32.dll" "system" fn LoadLibraryA(lplibfilename : PCSTR) -> HMODULE); -windows_targets::link!("kernel32.dll" "system" fn MapViewOfFile(hfilemappingobject : HANDLE, dwdesiredaccess : FILE_MAP, dwfileoffsethigh : u32, dwfileoffsetlow : u32, dwnumberofbytestomap : usize) -> MEMORY_MAPPED_VIEW_ADDRESS); -windows_targets::link!("kernel32.dll" "system" fn Module32FirstW(hsnapshot : HANDLE, lpme : *mut MODULEENTRY32W) -> BOOL); -windows_targets::link!("kernel32.dll" "system" fn Module32NextW(hsnapshot : HANDLE, lpme : *mut MODULEENTRY32W) -> BOOL); -windows_targets::link!("kernel32.dll" "system" fn ReleaseMutex(hmutex : HANDLE) -> BOOL); -windows_targets::link!("kernel32.dll" "system" fn RtlCaptureContext(contextrecord : *mut CONTEXT)); -#[cfg(target_arch = "aarch64")] -windows_targets::link!("kernel32.dll" "system" fn RtlLookupFunctionEntry(controlpc : usize, imagebase : *mut usize, historytable : *mut UNWIND_HISTORY_TABLE) -> *mut IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY); -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -windows_targets::link!("kernel32.dll" "system" fn RtlLookupFunctionEntry(controlpc : u64, imagebase : *mut u64, historytable : *mut UNWIND_HISTORY_TABLE) -> *mut IMAGE_RUNTIME_FUNCTION_ENTRY); -#[cfg(target_arch = "aarch64")] -windows_targets::link!("kernel32.dll" "system" fn RtlVirtualUnwind(handlertype : RTL_VIRTUAL_UNWIND_HANDLER_TYPE, imagebase : usize, controlpc : usize, functionentry : *const IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY, contextrecord : *mut CONTEXT, handlerdata : *mut *mut core::ffi::c_void, establisherframe : *mut usize, contextpointers : *mut KNONVOLATILE_CONTEXT_POINTERS) -> EXCEPTION_ROUTINE); -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -windows_targets::link!("kernel32.dll" "system" fn RtlVirtualUnwind(handlertype : RTL_VIRTUAL_UNWIND_HANDLER_TYPE, imagebase : u64, controlpc : u64, functionentry : *const IMAGE_RUNTIME_FUNCTION_ENTRY, contextrecord : *mut CONTEXT, handlerdata : *mut *mut core::ffi::c_void, establisherframe : *mut u64, contextpointers : *mut KNONVOLATILE_CONTEXT_POINTERS) -> EXCEPTION_ROUTINE); -windows_targets::link!("kernel32.dll" "system" fn UnmapViewOfFile(lpbaseaddress : MEMORY_MAPPED_VIEW_ADDRESS) -> BOOL); -windows_targets::link!("kernel32.dll" "system" fn WaitForSingleObjectEx(hhandle : HANDLE, dwmilliseconds : u32, balertable : BOOL) -> WAIT_EVENT); -windows_targets::link!("kernel32.dll" "system" fn WideCharToMultiByte(codepage : u32, dwflags : u32, lpwidecharstr : PCWSTR, cchwidechar : i32, lpmultibytestr : PSTR, cbmultibyte : i32, lpdefaultchar : PCSTR, lpuseddefaultchar : *mut BOOL) -> i32); -windows_targets::link!("kernel32.dll" "system" fn lstrlenW(lpstring : PCWSTR) -> i32); -#[repr(C)] -#[derive(Clone, Copy)] -pub struct ADDRESS64 { - pub Offset: u64, - pub Segment: u16, - pub Mode: ADDRESS_MODE, -} -pub type ADDRESS_MODE = i32; -#[repr(C)] -#[derive(Clone, Copy)] -pub union ARM64_NT_NEON128 { - pub Anonymous: ARM64_NT_NEON128_0, - pub D: [f64; 2], - pub S: [f32; 4], - pub H: [u16; 8], - pub B: [u8; 16], -} -#[repr(C)] -#[derive(Clone, Copy)] -pub struct ARM64_NT_NEON128_0 { - pub Low: u64, - pub High: i64, -} -pub const AddrModeFlat: ADDRESS_MODE = 3i32; -pub type BOOL = i32; -#[repr(C)] -#[cfg(target_arch = "aarch64")] -#[derive(Clone, Copy)] -pub struct CONTEXT { - pub ContextFlags: CONTEXT_FLAGS, - pub Cpsr: u32, - pub Anonymous: CONTEXT_0, - pub Sp: u64, - pub Pc: u64, - pub V: [ARM64_NT_NEON128; 32], - pub Fpcr: u32, - pub Fpsr: u32, - pub Bcr: [u32; 8], - pub Bvr: [u64; 8], - pub Wcr: [u32; 2], - pub Wvr: [u64; 2], -} -#[repr(C)] -#[cfg(target_arch = "aarch64")] -#[derive(Clone, Copy)] -pub union CONTEXT_0 { - pub Anonymous: CONTEXT_0_0, - pub X: [u64; 31], -} -#[repr(C)] -#[cfg(target_arch = "aarch64")] -#[derive(Clone, Copy)] -pub struct CONTEXT_0_0 { - pub X0: u64, - pub X1: u64, - pub X2: u64, - pub X3: u64, - pub X4: u64, - pub X5: u64, - pub X6: u64, - pub X7: u64, - pub X8: u64, - pub X9: u64, - pub X10: u64, - pub X11: u64, - pub X12: u64, - pub X13: u64, - pub X14: u64, - pub X15: u64, - pub X16: u64, - pub X17: u64, - pub X18: u64, - pub X19: u64, - pub X20: u64, - pub X21: u64, - pub X22: u64, - pub X23: u64, - pub X24: u64, - pub X25: u64, - pub X26: u64, - pub X27: u64, - pub X28: u64, - pub Fp: u64, - pub Lr: u64, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub struct CONTEXT { - pub P1Home: u64, - pub P2Home: u64, - pub P3Home: u64, - pub P4Home: u64, - pub P5Home: u64, - pub P6Home: u64, - pub ContextFlags: CONTEXT_FLAGS, - pub MxCsr: u32, - pub SegCs: u16, - pub SegDs: u16, - pub SegEs: u16, - pub SegFs: u16, - pub SegGs: u16, - pub SegSs: u16, - pub EFlags: u32, - pub Dr0: u64, - pub Dr1: u64, - pub Dr2: u64, - pub Dr3: u64, - pub Dr6: u64, - pub Dr7: u64, - pub Rax: u64, - pub Rcx: u64, - pub Rdx: u64, - pub Rbx: u64, - pub Rsp: u64, - pub Rbp: u64, - pub Rsi: u64, - pub Rdi: u64, - pub R8: u64, - pub R9: u64, - pub R10: u64, - pub R11: u64, - pub R12: u64, - pub R13: u64, - pub R14: u64, - pub R15: u64, - pub Rip: u64, - pub Anonymous: CONTEXT_0, - pub VectorRegister: [M128A; 26], - pub VectorControl: u64, - pub DebugControl: u64, - pub LastBranchToRip: u64, - pub LastBranchFromRip: u64, - pub LastExceptionToRip: u64, - pub LastExceptionFromRip: u64, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub union CONTEXT_0 { - pub FltSave: XSAVE_FORMAT, - pub Anonymous: CONTEXT_0_0, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub struct CONTEXT_0_0 { - pub Header: [M128A; 2], - pub Legacy: [M128A; 8], - pub Xmm0: M128A, - pub Xmm1: M128A, - pub Xmm2: M128A, - pub Xmm3: M128A, - pub Xmm4: M128A, - pub Xmm5: M128A, - pub Xmm6: M128A, - pub Xmm7: M128A, - pub Xmm8: M128A, - pub Xmm9: M128A, - pub Xmm10: M128A, - pub Xmm11: M128A, - pub Xmm12: M128A, - pub Xmm13: M128A, - pub Xmm14: M128A, - pub Xmm15: M128A, -} -#[repr(C)] -#[cfg(target_arch = "x86")] -#[derive(Clone, Copy)] -pub struct CONTEXT { - pub ContextFlags: CONTEXT_FLAGS, - pub Dr0: u32, - pub Dr1: u32, - pub Dr2: u32, - pub Dr3: u32, - pub Dr6: u32, - pub Dr7: u32, - pub FloatSave: FLOATING_SAVE_AREA, - pub SegGs: u32, - pub SegFs: u32, - pub SegEs: u32, - pub SegDs: u32, - pub Edi: u32, - pub Esi: u32, - pub Ebx: u32, - pub Edx: u32, - pub Ecx: u32, - pub Eax: u32, - pub Ebp: u32, - pub Eip: u32, - pub SegCs: u32, - pub EFlags: u32, - pub Esp: u32, - pub SegSs: u32, - pub ExtendedRegisters: [u8; 512], -} - -pub type CONTEXT_FLAGS = u32; -pub const CP_UTF8: u32 = 65001u32; -pub type CREATE_TOOLHELP_SNAPSHOT_FLAGS = u32; -pub type EXCEPTION_DISPOSITION = i32; -#[repr(C)] -#[derive(Clone, Copy)] -pub struct EXCEPTION_RECORD { - pub ExceptionCode: NTSTATUS, - pub ExceptionFlags: u32, - pub ExceptionRecord: *mut EXCEPTION_RECORD, - pub ExceptionAddress: *mut core::ffi::c_void, - pub NumberParameters: u32, - pub ExceptionInformation: [usize; 15], -} -pub type EXCEPTION_ROUTINE = Option< - unsafe extern "system" fn( - exceptionrecord: *mut EXCEPTION_RECORD, - establisherframe: *const core::ffi::c_void, - contextrecord: *mut CONTEXT, - dispatchercontext: *const core::ffi::c_void, - ) -> EXCEPTION_DISPOSITION, ->; -pub const FALSE: BOOL = 0i32; -pub type FARPROC = Option<unsafe extern "system" fn() -> isize>; -pub type FILE_MAP = u32; -pub const FILE_MAP_READ: FILE_MAP = 4u32; -#[repr(C)] -#[cfg(any( - target_arch = "aarch64", - target_arch = "arm64ec", - target_arch = "x86_64" -))] -#[derive(Clone, Copy)] -pub struct FLOATING_SAVE_AREA { - pub ControlWord: u32, - pub StatusWord: u32, - pub TagWord: u32, - pub ErrorOffset: u32, - pub ErrorSelector: u32, - pub DataOffset: u32, - pub DataSelector: u32, - pub RegisterArea: [u8; 80], - pub Cr0NpxState: u32, -} -#[repr(C)] -#[cfg(target_arch = "x86")] -#[derive(Clone, Copy)] -pub struct FLOATING_SAVE_AREA { - pub ControlWord: u32, - pub StatusWord: u32, - pub TagWord: u32, - pub ErrorOffset: u32, - pub ErrorSelector: u32, - pub DataOffset: u32, - pub DataSelector: u32, - pub RegisterArea: [u8; 80], - pub Spare0: u32, -} -pub type HANDLE = *mut core::ffi::c_void; -pub type HINSTANCE = *mut core::ffi::c_void; -pub type HMODULE = *mut core::ffi::c_void; -#[repr(C)] -#[derive(Clone, Copy)] -pub struct IMAGEHLP_LINEW64 { - pub SizeOfStruct: u32, - pub Key: *mut core::ffi::c_void, - pub LineNumber: u32, - pub FileName: PWSTR, - pub Address: u64, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub struct IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY { - pub BeginAddress: u32, - pub Anonymous: IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY_0, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub union IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY_0 { - pub UnwindData: u32, - pub Anonymous: IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY_0_0, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub struct IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY_0_0 { - pub _bitfield: u32, -} -pub type IMAGE_FILE_MACHINE = u16; -pub const IMAGE_FILE_MACHINE_I386: IMAGE_FILE_MACHINE = 332u16; -#[repr(C)] -#[derive(Clone, Copy)] -pub struct IMAGE_RUNTIME_FUNCTION_ENTRY { - pub BeginAddress: u32, - pub EndAddress: u32, - pub Anonymous: IMAGE_RUNTIME_FUNCTION_ENTRY_0, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub union IMAGE_RUNTIME_FUNCTION_ENTRY_0 { - pub UnwindInfoAddress: u32, - pub UnwindData: u32, -} -pub const INFINITE: u32 = 4294967295u32; -pub const INVALID_HANDLE_VALUE: HANDLE = -1i32 as _; -#[repr(C)] -#[derive(Clone, Copy)] -pub struct KDHELP64 { - pub Thread: u64, - pub ThCallbackStack: u32, - pub ThCallbackBStore: u32, - pub NextCallback: u32, - pub FramePointer: u32, - pub KiCallUserMode: u64, - pub KeUserCallbackDispatcher: u64, - pub SystemRangeStart: u64, - pub KiUserExceptionDispatcher: u64, - pub StackBase: u64, - pub StackLimit: u64, - pub BuildVersion: u32, - pub RetpolineStubFunctionTableSize: u32, - pub RetpolineStubFunctionTable: u64, - pub RetpolineStubOffset: u32, - pub RetpolineStubSize: u32, - pub Reserved0: [u64; 2], -} -#[repr(C)] -#[cfg(target_arch = "aarch64")] -#[derive(Clone, Copy)] -pub struct KNONVOLATILE_CONTEXT_POINTERS { - pub X19: *mut u64, - pub X20: *mut u64, - pub X21: *mut u64, - pub X22: *mut u64, - pub X23: *mut u64, - pub X24: *mut u64, - pub X25: *mut u64, - pub X26: *mut u64, - pub X27: *mut u64, - pub X28: *mut u64, - pub Fp: *mut u64, - pub Lr: *mut u64, - pub D8: *mut u64, - pub D9: *mut u64, - pub D10: *mut u64, - pub D11: *mut u64, - pub D12: *mut u64, - pub D13: *mut u64, - pub D14: *mut u64, - pub D15: *mut u64, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub struct KNONVOLATILE_CONTEXT_POINTERS { - pub Anonymous1: KNONVOLATILE_CONTEXT_POINTERS_0, - pub Anonymous2: KNONVOLATILE_CONTEXT_POINTERS_1, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub union KNONVOLATILE_CONTEXT_POINTERS_0 { - pub FloatingContext: [*mut M128A; 16], - pub Anonymous: KNONVOLATILE_CONTEXT_POINTERS_0_0, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub struct KNONVOLATILE_CONTEXT_POINTERS_0_0 { - pub Xmm0: *mut M128A, - pub Xmm1: *mut M128A, - pub Xmm2: *mut M128A, - pub Xmm3: *mut M128A, - pub Xmm4: *mut M128A, - pub Xmm5: *mut M128A, - pub Xmm6: *mut M128A, - pub Xmm7: *mut M128A, - pub Xmm8: *mut M128A, - pub Xmm9: *mut M128A, - pub Xmm10: *mut M128A, - pub Xmm11: *mut M128A, - pub Xmm12: *mut M128A, - pub Xmm13: *mut M128A, - pub Xmm14: *mut M128A, - pub Xmm15: *mut M128A, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub union KNONVOLATILE_CONTEXT_POINTERS_1 { - pub IntegerContext: [*mut u64; 16], - pub Anonymous: KNONVOLATILE_CONTEXT_POINTERS_1_0, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub struct KNONVOLATILE_CONTEXT_POINTERS_1_0 { - pub Rax: *mut u64, - pub Rcx: *mut u64, - pub Rdx: *mut u64, - pub Rbx: *mut u64, - pub Rsp: *mut u64, - pub Rbp: *mut u64, - pub Rsi: *mut u64, - pub Rdi: *mut u64, - pub R8: *mut u64, - pub R9: *mut u64, - pub R10: *mut u64, - pub R11: *mut u64, - pub R12: *mut u64, - pub R13: *mut u64, - pub R14: *mut u64, - pub R15: *mut u64, -} -#[repr(C)] -#[cfg(target_arch = "x86")] -#[derive(Clone, Copy)] -pub struct KNONVOLATILE_CONTEXT_POINTERS { - pub Dummy: u32, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub struct M128A { - pub Low: u64, - pub High: i64, -} -pub const MAX_SYM_NAME: u32 = 2000u32; -#[repr(C)] -#[derive(Clone, Copy)] -pub struct MEMORY_MAPPED_VIEW_ADDRESS { - pub Value: *mut core::ffi::c_void, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub struct MODULEENTRY32W { - pub dwSize: u32, - pub th32ModuleID: u32, - pub th32ProcessID: u32, - pub GlblcntUsage: u32, - pub ProccntUsage: u32, - pub modBaseAddr: *mut u8, - pub modBaseSize: u32, - pub hModule: HMODULE, - pub szModule: [u16; 256], - pub szExePath: [u16; 260], -} -pub type NTSTATUS = i32; -pub type PAGE_PROTECTION_FLAGS = u32; -pub const PAGE_READONLY: PAGE_PROTECTION_FLAGS = 2u32; -pub type PCSTR = *const u8; -pub type PCWSTR = *const u16; -pub type PENUMLOADED_MODULES_CALLBACKW64 = Option< - unsafe extern "system" fn( - modulename: PCWSTR, - modulebase: u64, - modulesize: u32, - usercontext: *const core::ffi::c_void, - ) -> BOOL, ->; -pub type PFUNCTION_TABLE_ACCESS_ROUTINE64 = - Option<unsafe extern "system" fn(ahprocess: HANDLE, addrbase: u64) -> *mut core::ffi::c_void>; -pub type PGET_MODULE_BASE_ROUTINE64 = - Option<unsafe extern "system" fn(hprocess: HANDLE, address: u64) -> u64>; -pub type PREAD_PROCESS_MEMORY_ROUTINE64 = Option< - unsafe extern "system" fn( - hprocess: HANDLE, - qwbaseaddress: u64, - lpbuffer: *mut core::ffi::c_void, - nsize: u32, - lpnumberofbytesread: *mut u32, - ) -> BOOL, ->; -pub type PSTR = *mut u8; -pub type PTRANSLATE_ADDRESS_ROUTINE64 = Option< - unsafe extern "system" fn(hprocess: HANDLE, hthread: HANDLE, lpaddr: *const ADDRESS64) -> u64, ->; -pub type PWSTR = *mut u16; -pub type RTL_VIRTUAL_UNWIND_HANDLER_TYPE = u32; -#[repr(C)] -#[derive(Clone, Copy)] -pub struct SECURITY_ATTRIBUTES { - pub nLength: u32, - pub lpSecurityDescriptor: *mut core::ffi::c_void, - pub bInheritHandle: BOOL, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub struct STACKFRAME64 { - pub AddrPC: ADDRESS64, - pub AddrReturn: ADDRESS64, - pub AddrFrame: ADDRESS64, - pub AddrStack: ADDRESS64, - pub AddrBStore: ADDRESS64, - pub FuncTableEntry: *mut core::ffi::c_void, - pub Params: [u64; 4], - pub Far: BOOL, - pub Virtual: BOOL, - pub Reserved: [u64; 3], - pub KdHelp: KDHELP64, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub struct STACKFRAME_EX { - pub AddrPC: ADDRESS64, - pub AddrReturn: ADDRESS64, - pub AddrFrame: ADDRESS64, - pub AddrStack: ADDRESS64, - pub AddrBStore: ADDRESS64, - pub FuncTableEntry: *mut core::ffi::c_void, - pub Params: [u64; 4], - pub Far: BOOL, - pub Virtual: BOOL, - pub Reserved: [u64; 3], - pub KdHelp: KDHELP64, - pub StackFrameSize: u32, - pub InlineFrameContext: u32, -} -#[repr(C)] -#[derive(Clone, Copy)] -pub struct SYMBOL_INFOW { - pub SizeOfStruct: u32, - pub TypeIndex: u32, - pub Reserved: [u64; 2], - pub Index: u32, - pub Size: u32, - pub ModBase: u64, - pub Flags: SYMBOL_INFO_FLAGS, - pub Value: u64, - pub Address: u64, - pub Register: u32, - pub Scope: u32, - pub Tag: u32, - pub NameLen: u32, - pub MaxNameLen: u32, - pub Name: [u16; 1], -} -pub type SYMBOL_INFO_FLAGS = u32; -pub const SYMOPT_DEFERRED_LOADS: u32 = 4u32; -pub const TH32CS_SNAPMODULE: CREATE_TOOLHELP_SNAPSHOT_FLAGS = 8u32; -pub const TRUE: BOOL = 1i32; -#[repr(C)] -#[cfg(any( - target_arch = "aarch64", - target_arch = "arm64ec", - target_arch = "x86_64" -))] -#[derive(Clone, Copy)] -pub struct UNWIND_HISTORY_TABLE { - pub Count: u32, - pub LocalHint: u8, - pub GlobalHint: u8, - pub Search: u8, - pub Once: u8, - pub LowAddress: usize, - pub HighAddress: usize, - pub Entry: [UNWIND_HISTORY_TABLE_ENTRY; 12], -} -#[repr(C)] -#[cfg(target_arch = "aarch64")] -#[derive(Clone, Copy)] -pub struct UNWIND_HISTORY_TABLE_ENTRY { - pub ImageBase: usize, - pub FunctionEntry: *mut IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY, -} -#[repr(C)] -#[cfg(any(target_arch = "arm64ec", target_arch = "x86_64"))] -#[derive(Clone, Copy)] -pub struct UNWIND_HISTORY_TABLE_ENTRY { - pub ImageBase: usize, - pub FunctionEntry: *mut IMAGE_RUNTIME_FUNCTION_ENTRY, -} -pub type WAIT_EVENT = u32; -#[repr(C)] -#[cfg(any( - target_arch = "aarch64", - target_arch = "arm64ec", - target_arch = "x86_64" -))] -#[derive(Clone, Copy)] -pub struct XSAVE_FORMAT { - pub ControlWord: u16, - pub StatusWord: u16, - pub TagWord: u8, - pub Reserved1: u8, - pub ErrorOpcode: u16, - pub ErrorOffset: u32, - pub ErrorSelector: u16, - pub Reserved2: u16, - pub DataOffset: u32, - pub DataSelector: u16, - pub Reserved3: u16, - pub MxCsr: u32, - pub MxCsr_Mask: u32, - pub FloatRegisters: [M128A; 8], - pub XmmRegisters: [M128A; 16], - pub Reserved4: [u8; 96], -} -#[repr(C)] -#[cfg(target_arch = "x86")] -#[derive(Clone, Copy)] -pub struct XSAVE_FORMAT { - pub ControlWord: u16, - pub StatusWord: u16, - pub TagWord: u8, - pub Reserved1: u8, - pub ErrorOpcode: u16, - pub ErrorOffset: u32, - pub ErrorSelector: u16, - pub Reserved2: u16, - pub DataOffset: u32, - pub DataSelector: u16, - pub Reserved3: u16, - pub MxCsr: u32, - pub MxCsr_Mask: u32, - pub FloatRegisters: [M128A; 8], - pub XmmRegisters: [M128A; 8], - pub Reserved4: [u8; 224], -} - -#[cfg(target_arch = "arm")] -include!("./windows_sys_arm32_shim.rs"); diff --git a/vendor/backtrace/src/windows_sys_arm32_shim.rs b/vendor/backtrace/src/windows_sys_arm32_shim.rs deleted file mode 100644 index 4df9064c..00000000 --- a/vendor/backtrace/src/windows_sys_arm32_shim.rs +++ /dev/null @@ -1,53 +0,0 @@ -pub const ARM_MAX_BREAKPOINTS: usize = 8; -pub const ARM_MAX_WATCHPOINTS: usize = 1; - -#[repr(C)] -#[derive(Clone, Copy)] -pub struct NEON128 { - pub Low: u64, - pub High: i64, -} - -#[repr(C)] -#[derive(Clone, Copy)] -pub union CONTEXT_FloatRegs { - pub Q: [NEON128; 16], - pub D: [u64; 32], - pub S: [u32; 32], -} - -#[repr(C)] -#[derive(Clone, Copy)] -pub struct CONTEXT { - pub ContextFlags: u32, - pub R0: u32, - pub R1: u32, - pub R2: u32, - pub R3: u32, - pub R4: u32, - pub R5: u32, - pub R6: u32, - pub R7: u32, - pub R8: u32, - pub R9: u32, - pub R10: u32, - pub R11: u32, - pub R12: u32, - // Control registers - pub Sp: u32, - pub Lr: u32, - pub Pc: u32, - pub Cpsr: u32, - // Floating-point registers - pub Fpsrc: u32, - pub Padding: u32, - pub u: CONTEXT_FloatRegs, - // Debug registers - pub Bvr: [u32; ARM_MAX_BREAKPOINTS], - pub Bcr: [u32; ARM_MAX_BREAKPOINTS], - pub Wvr: [u32; ARM_MAX_WATCHPOINTS], - pub Wcr: [u32; ARM_MAX_WATCHPOINTS], - pub Padding2: [u32; 2], -} - -pub const IMAGE_FILE_MACHINE_ARMNT: IMAGE_FILE_MACHINE = 0x01c4; |