diff options
Diffstat (limited to 'vendor/github.com/ebitengine/purego/internal')
33 files changed, 1878 insertions, 0 deletions
diff --git a/vendor/github.com/ebitengine/purego/internal/cgo/dlfcn_cgo_unix.go b/vendor/github.com/ebitengine/purego/internal/cgo/dlfcn_cgo_unix.go new file mode 100644 index 0000000..b09ecac --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/cgo/dlfcn_cgo_unix.go @@ -0,0 +1,56 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2024 The Ebitengine Authors + +//go:build freebsd || linux + +package cgo + +/* + #cgo LDFLAGS: -ldl + +#include <dlfcn.h> +#include <stdlib.h> +*/ +import "C" + +import ( + "errors" + "unsafe" +) + +func Dlopen(filename string, flag int) (uintptr, error) { + cfilename := C.CString(filename) + defer C.free(unsafe.Pointer(cfilename)) + handle := C.dlopen(cfilename, C.int(flag)) + if handle == nil { + return 0, errors.New(C.GoString(C.dlerror())) + } + return uintptr(handle), nil +} + +func Dlsym(handle uintptr, symbol string) (uintptr, error) { + csymbol := C.CString(symbol) + defer C.free(unsafe.Pointer(csymbol)) + symbolAddr := C.dlsym(*(*unsafe.Pointer)(unsafe.Pointer(&handle)), csymbol) + if symbolAddr == nil { + return 0, errors.New(C.GoString(C.dlerror())) + } + return uintptr(symbolAddr), nil +} + +func Dlclose(handle uintptr) error { + result := C.dlclose(*(*unsafe.Pointer)(unsafe.Pointer(&handle))) + if result != 0 { + return errors.New(C.GoString(C.dlerror())) + } + return nil +} + +// all that is needed is to assign each dl function because then its +// symbol will then be made available to the linker and linked to inside dlfcn.go +var ( + _ = C.dlopen + _ = C.dlsym + _ = C.dlerror + _ = C.dlclose +) diff --git a/vendor/github.com/ebitengine/purego/internal/cgo/empty.go b/vendor/github.com/ebitengine/purego/internal/cgo/empty.go new file mode 100644 index 0000000..1d7cffe --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/cgo/empty.go @@ -0,0 +1,6 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2024 The Ebitengine Authors + +package cgo + +// Empty so that importing this package doesn't cause issue for certain platforms. diff --git a/vendor/github.com/ebitengine/purego/internal/cgo/syscall_cgo_unix.go b/vendor/github.com/ebitengine/purego/internal/cgo/syscall_cgo_unix.go new file mode 100644 index 0000000..37ff24d --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/cgo/syscall_cgo_unix.go @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build freebsd || (linux && !(arm64 || amd64)) + +package cgo + +// this file is placed inside internal/cgo and not package purego +// because Cgo and assembly files can't be in the same package. + +/* + #cgo LDFLAGS: -ldl + +#include <stdint.h> +#include <dlfcn.h> +#include <errno.h> +#include <assert.h> + +typedef struct syscall15Args { + uintptr_t fn; + uintptr_t a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15; + uintptr_t f1, f2, f3, f4, f5, f6, f7, f8; + uintptr_t err; +} syscall15Args; + +void syscall15(struct syscall15Args *args) { + assert((args->f1|args->f2|args->f3|args->f4|args->f5|args->f6|args->f7|args->f8) == 0); + uintptr_t (*func_name)(uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, + uintptr_t a7, uintptr_t a8, uintptr_t a9, uintptr_t a10, uintptr_t a11, uintptr_t a12, + uintptr_t a13, uintptr_t a14, uintptr_t a15); + *(void**)(&func_name) = (void*)(args->fn); + uintptr_t r1 = func_name(args->a1,args->a2,args->a3,args->a4,args->a5,args->a6,args->a7,args->a8,args->a9, + args->a10,args->a11,args->a12,args->a13,args->a14,args->a15); + args->a1 = r1; + args->err = errno; +} + +*/ +import "C" +import "unsafe" + +// assign purego.syscall15XABI0 to the C version of this function. +var Syscall15XABI0 = unsafe.Pointer(C.syscall15) + +//go:nosplit +func Syscall15X(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15 uintptr) (r1, r2, err uintptr) { + args := C.syscall15Args{ + C.uintptr_t(fn), C.uintptr_t(a1), C.uintptr_t(a2), C.uintptr_t(a3), + C.uintptr_t(a4), C.uintptr_t(a5), C.uintptr_t(a6), + C.uintptr_t(a7), C.uintptr_t(a8), C.uintptr_t(a9), C.uintptr_t(a10), C.uintptr_t(a11), C.uintptr_t(a12), + C.uintptr_t(a13), C.uintptr_t(a14), C.uintptr_t(a15), 0, 0, 0, 0, 0, 0, 0, 0, 0, + } + C.syscall15(&args) + return uintptr(args.a1), 0, uintptr(args.err) +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_amd64.h b/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_amd64.h new file mode 100644 index 0000000..9949435 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_amd64.h @@ -0,0 +1,99 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Macros for transitioning from the host ABI to Go ABI0. +// +// These save the frame pointer, so in general, functions that use +// these should have zero frame size to suppress the automatic frame +// pointer, though it's harmless to not do this. + +#ifdef GOOS_windows + +// REGS_HOST_TO_ABI0_STACK is the stack bytes used by +// PUSH_REGS_HOST_TO_ABI0. +#define REGS_HOST_TO_ABI0_STACK (28*8 + 8) + +// PUSH_REGS_HOST_TO_ABI0 prepares for transitioning from +// the host ABI to Go ABI0 code. It saves all registers that are +// callee-save in the host ABI and caller-save in Go ABI0 and prepares +// for entry to Go. +// +// Save DI SI BP BX R12 R13 R14 R15 X6-X15 registers and the DF flag. +// Clear the DF flag for the Go ABI. +// MXCSR matches the Go ABI, so we don't have to set that, +// and Go doesn't modify it, so we don't have to save it. +#define PUSH_REGS_HOST_TO_ABI0() \ + PUSHFQ \ + CLD \ + ADJSP $(REGS_HOST_TO_ABI0_STACK - 8) \ + MOVQ DI, (0*0)(SP) \ + MOVQ SI, (1*8)(SP) \ + MOVQ BP, (2*8)(SP) \ + MOVQ BX, (3*8)(SP) \ + MOVQ R12, (4*8)(SP) \ + MOVQ R13, (5*8)(SP) \ + MOVQ R14, (6*8)(SP) \ + MOVQ R15, (7*8)(SP) \ + MOVUPS X6, (8*8)(SP) \ + MOVUPS X7, (10*8)(SP) \ + MOVUPS X8, (12*8)(SP) \ + MOVUPS X9, (14*8)(SP) \ + MOVUPS X10, (16*8)(SP) \ + MOVUPS X11, (18*8)(SP) \ + MOVUPS X12, (20*8)(SP) \ + MOVUPS X13, (22*8)(SP) \ + MOVUPS X14, (24*8)(SP) \ + MOVUPS X15, (26*8)(SP) + +#define POP_REGS_HOST_TO_ABI0() \ + MOVQ (0*0)(SP), DI \ + MOVQ (1*8)(SP), SI \ + MOVQ (2*8)(SP), BP \ + MOVQ (3*8)(SP), BX \ + MOVQ (4*8)(SP), R12 \ + MOVQ (5*8)(SP), R13 \ + MOVQ (6*8)(SP), R14 \ + MOVQ (7*8)(SP), R15 \ + MOVUPS (8*8)(SP), X6 \ + MOVUPS (10*8)(SP), X7 \ + MOVUPS (12*8)(SP), X8 \ + MOVUPS (14*8)(SP), X9 \ + MOVUPS (16*8)(SP), X10 \ + MOVUPS (18*8)(SP), X11 \ + MOVUPS (20*8)(SP), X12 \ + MOVUPS (22*8)(SP), X13 \ + MOVUPS (24*8)(SP), X14 \ + MOVUPS (26*8)(SP), X15 \ + ADJSP $-(REGS_HOST_TO_ABI0_STACK - 8) \ + POPFQ + +#else +// SysV ABI + +#define REGS_HOST_TO_ABI0_STACK (6*8) + +// SysV MXCSR matches the Go ABI, so we don't have to set that, +// and Go doesn't modify it, so we don't have to save it. +// Both SysV and Go require DF to be cleared, so that's already clear. +// The SysV and Go frame pointer conventions are compatible. +#define PUSH_REGS_HOST_TO_ABI0() \ + ADJSP $(REGS_HOST_TO_ABI0_STACK) \ + MOVQ BP, (5*8)(SP) \ + LEAQ (5*8)(SP), BP \ + MOVQ BX, (0*8)(SP) \ + MOVQ R12, (1*8)(SP) \ + MOVQ R13, (2*8)(SP) \ + MOVQ R14, (3*8)(SP) \ + MOVQ R15, (4*8)(SP) + +#define POP_REGS_HOST_TO_ABI0() \ + MOVQ (0*8)(SP), BX \ + MOVQ (1*8)(SP), R12 \ + MOVQ (2*8)(SP), R13 \ + MOVQ (3*8)(SP), R14 \ + MOVQ (4*8)(SP), R15 \ + MOVQ (5*8)(SP), BP \ + ADJSP $-(REGS_HOST_TO_ABI0_STACK) + +#endif diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_arm64.h b/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_arm64.h new file mode 100644 index 0000000..5d5061e --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/abi_arm64.h @@ -0,0 +1,39 @@ +// Copyright 2021 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Macros for transitioning from the host ABI to Go ABI0. +// +// These macros save and restore the callee-saved registers +// from the stack, but they don't adjust stack pointer, so +// the user should prepare stack space in advance. +// SAVE_R19_TO_R28(offset) saves R19 ~ R28 to the stack space +// of ((offset)+0*8)(RSP) ~ ((offset)+9*8)(RSP). +// +// SAVE_F8_TO_F15(offset) saves F8 ~ F15 to the stack space +// of ((offset)+0*8)(RSP) ~ ((offset)+7*8)(RSP). +// +// R29 is not saved because Go will save and restore it. + +#define SAVE_R19_TO_R28(offset) \ + STP (R19, R20), ((offset)+0*8)(RSP) \ + STP (R21, R22), ((offset)+2*8)(RSP) \ + STP (R23, R24), ((offset)+4*8)(RSP) \ + STP (R25, R26), ((offset)+6*8)(RSP) \ + STP (R27, g), ((offset)+8*8)(RSP) +#define RESTORE_R19_TO_R28(offset) \ + LDP ((offset)+0*8)(RSP), (R19, R20) \ + LDP ((offset)+2*8)(RSP), (R21, R22) \ + LDP ((offset)+4*8)(RSP), (R23, R24) \ + LDP ((offset)+6*8)(RSP), (R25, R26) \ + LDP ((offset)+8*8)(RSP), (R27, g) /* R28 */ +#define SAVE_F8_TO_F15(offset) \ + FSTPD (F8, F9), ((offset)+0*8)(RSP) \ + FSTPD (F10, F11), ((offset)+2*8)(RSP) \ + FSTPD (F12, F13), ((offset)+4*8)(RSP) \ + FSTPD (F14, F15), ((offset)+6*8)(RSP) +#define RESTORE_F8_TO_F15(offset) \ + FLDPD ((offset)+0*8)(RSP), (F8, F9) \ + FLDPD ((offset)+2*8)(RSP), (F10, F11) \ + FLDPD ((offset)+4*8)(RSP), (F12, F13) \ + FLDPD ((offset)+6*8)(RSP), (F14, F15) diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_amd64.s b/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_amd64.s new file mode 100644 index 0000000..2b7eb57 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_amd64.s @@ -0,0 +1,39 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#include "textflag.h" +#include "abi_amd64.h" + +// Called by C code generated by cmd/cgo. +// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr) +// Saves C callee-saved registers and calls cgocallback with three arguments. +// fn is the PC of a func(a unsafe.Pointer) function. +// This signature is known to SWIG, so we can't change it. +TEXT crosscall2(SB), NOSPLIT, $0-0 + PUSH_REGS_HOST_TO_ABI0() + + // Make room for arguments to cgocallback. + ADJSP $0x18 + +#ifndef GOOS_windows + MOVQ DI, 0x0(SP) // fn + MOVQ SI, 0x8(SP) // arg + + // Skip n in DX. + MOVQ CX, 0x10(SP) // ctxt + +#else + MOVQ CX, 0x0(SP) // fn + MOVQ DX, 0x8(SP) // arg + + // Skip n in R8. + MOVQ R9, 0x10(SP) // ctxt + +#endif + + CALL runtime·cgocallback(SB) + + ADJSP $-0x18 + POP_REGS_HOST_TO_ABI0() + RET diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_arm64.s b/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_arm64.s new file mode 100644 index 0000000..50e5261 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/asm_arm64.s @@ -0,0 +1,36 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#include "textflag.h" +#include "abi_arm64.h" + +// Called by C code generated by cmd/cgo. +// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr) +// Saves C callee-saved registers and calls cgocallback with three arguments. +// fn is the PC of a func(a unsafe.Pointer) function. +TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0 +/* + * We still need to save all callee save register as before, and then + * push 3 args for fn (R0, R1, R3), skipping R2. + * Also note that at procedure entry in gc world, 8(RSP) will be the + * first arg. + */ + SUB $(8*24), RSP + STP (R0, R1), (8*1)(RSP) + MOVD R3, (8*3)(RSP) + + SAVE_R19_TO_R28(8*4) + SAVE_F8_TO_F15(8*14) + STP (R29, R30), (8*22)(RSP) + + // Initialize Go ABI environment + BL runtime·load_g(SB) + BL runtime·cgocallback(SB) + + RESTORE_R19_TO_R28(8*4) + RESTORE_F8_TO_F15(8*14) + LDP (8*22)(RSP), (R29, R30) + + ADD $(8*24), RSP + RET diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/callbacks.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/callbacks.go new file mode 100644 index 0000000..f29e690 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/callbacks.go @@ -0,0 +1,93 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo && (darwin || freebsd || linux) + +package fakecgo + +import ( + _ "unsafe" +) + +// TODO: decide if we need _runtime_cgo_panic_internal + +//go:linkname x_cgo_init_trampoline x_cgo_init_trampoline +//go:linkname _cgo_init _cgo_init +var x_cgo_init_trampoline byte +var _cgo_init = &x_cgo_init_trampoline + +// Creates a new system thread without updating any Go state. +// +// This method is invoked during shared library loading to create a new OS +// thread to perform the runtime initialization. This method is similar to +// _cgo_sys_thread_start except that it doesn't update any Go state. + +//go:linkname x_cgo_thread_start_trampoline x_cgo_thread_start_trampoline +//go:linkname _cgo_thread_start _cgo_thread_start +var x_cgo_thread_start_trampoline byte +var _cgo_thread_start = &x_cgo_thread_start_trampoline + +// Notifies that the runtime has been initialized. +// +// We currently block at every CGO entry point (via _cgo_wait_runtime_init_done) +// to ensure that the runtime has been initialized before the CGO call is +// executed. This is necessary for shared libraries where we kickoff runtime +// initialization in a separate thread and return without waiting for this +// thread to complete the init. + +//go:linkname x_cgo_notify_runtime_init_done_trampoline x_cgo_notify_runtime_init_done_trampoline +//go:linkname _cgo_notify_runtime_init_done _cgo_notify_runtime_init_done +var x_cgo_notify_runtime_init_done_trampoline byte +var _cgo_notify_runtime_init_done = &x_cgo_notify_runtime_init_done_trampoline + +// Indicates whether a dummy thread key has been created or not. +// +// When calling go exported function from C, we register a destructor +// callback, for a dummy thread key, by using pthread_key_create. + +//go:linkname _cgo_pthread_key_created _cgo_pthread_key_created +var x_cgo_pthread_key_created uintptr +var _cgo_pthread_key_created = &x_cgo_pthread_key_created + +// Set the x_crosscall2_ptr C function pointer variable point to crosscall2. +// It's for the runtime package to call at init time. +func set_crosscall2() { + // nothing needs to be done here for fakecgo + // because it's possible to just call cgocallback directly +} + +//go:linkname _set_crosscall2 runtime.set_crosscall2 +var _set_crosscall2 = set_crosscall2 + +// Store the g into the thread-specific value. +// So that pthread_key_destructor will dropm when the thread is exiting. + +//go:linkname x_cgo_bindm_trampoline x_cgo_bindm_trampoline +//go:linkname _cgo_bindm _cgo_bindm +var x_cgo_bindm_trampoline byte +var _cgo_bindm = &x_cgo_bindm_trampoline + +// TODO: decide if we need x_cgo_set_context_function +// TODO: decide if we need _cgo_yield + +var ( + // In Go 1.20 the race detector was rewritten to pure Go + // on darwin. This means that when CGO_ENABLED=0 is set + // fakecgo is built with race detector code. This is not + // good since this code is pretending to be C. The go:norace + // pragma is not enough, since it only applies to the native + // ABIInternal function. The ABIO wrapper (which is necessary, + // since all references to text symbols from assembly will use it) + // does not inherit the go:norace pragma, so it will still be + // instrumented by the race detector. + // + // To circumvent this issue, using closure calls in the + // assembly, which forces the compiler to use the ABIInternal + // native implementation (which has go:norace) instead. + threadentry_call = threadentry + x_cgo_init_call = x_cgo_init + x_cgo_setenv_call = x_cgo_setenv + x_cgo_unsetenv_call = x_cgo_unsetenv + x_cgo_thread_start_call = x_cgo_thread_start +) diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/doc.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/doc.go new file mode 100644 index 0000000..be82f7d --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/doc.go @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || freebsd || linux) + +// Package fakecgo implements the Cgo runtime (runtime/cgo) entirely in Go. +// This allows code that calls into C to function properly when CGO_ENABLED=0. +// +// # Goals +// +// fakecgo attempts to replicate the same naming structure as in the runtime. +// For example, functions that have the prefix "gcc_*" are named "go_*". +// This makes it easier to port other GOOSs and GOARCHs as well as to keep +// it in sync with runtime/cgo. +// +// # Support +// +// Currently, fakecgo only supports macOS on amd64 & arm64. It also cannot +// be used with -buildmode=c-archive because that requires special initialization +// that fakecgo does not implement at the moment. +// +// # Usage +// +// Using fakecgo is easy just import _ "github.com/ebitengine/purego" and then +// set the environment variable CGO_ENABLED=0. +// The recommended usage for fakecgo is to prefer using runtime/cgo if possible +// but if cross-compiling or fast build times are important fakecgo is available. +// Purego will pick which ever Cgo runtime is available and prefer the one that +// comes with Go (runtime/cgo). +package fakecgo + +//go:generate go run gen.go diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/freebsd.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/freebsd.go new file mode 100644 index 0000000..bb73a70 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/freebsd.go @@ -0,0 +1,27 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build freebsd && !cgo + +package fakecgo + +import _ "unsafe" // for go:linkname + +// Supply environ and __progname, because we don't +// link against the standard FreeBSD crt0.o and the +// libc dynamic library needs them. + +// Note: when building with cross-compiling or CGO_ENABLED=0, add +// the following argument to `go` so that these symbols are defined by +// making fakecgo the Cgo. +// -gcflags="github.com/ebitengine/purego/internal/fakecgo=-std" + +//go:linkname _environ environ +//go:linkname _progname __progname + +//go:cgo_export_dynamic environ +//go:cgo_export_dynamic __progname + +var _environ uintptr +var _progname uintptr diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin_amd64.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin_amd64.go new file mode 100644 index 0000000..39f5ff1 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin_amd64.go @@ -0,0 +1,73 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo + +package fakecgo + +import "unsafe" + +//go:nosplit +//go:norace +func _cgo_sys_thread_start(ts *ThreadStart) { + var attr pthread_attr_t + var ign, oset sigset_t + var p pthread_t + var size size_t + var err int + + sigfillset(&ign) + pthread_sigmask(SIG_SETMASK, &ign, &oset) + + size = pthread_get_stacksize_np(pthread_self()) + pthread_attr_init(&attr) + pthread_attr_setstacksize(&attr, size) + // Leave stacklo=0 and set stackhi=size; mstart will do the rest. + ts.g.stackhi = uintptr(size) + + err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts) + + pthread_sigmask(SIG_SETMASK, &oset, nil) + + if err != 0 { + print("fakecgo: pthread_create failed: ") + println(err) + abort() + } +} + +// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function +// +//go:linkname x_threadentry_trampoline threadentry_trampoline +var x_threadentry_trampoline byte +var threadentry_trampolineABI0 = &x_threadentry_trampoline + +//go:nosplit +//go:norace +func threadentry(v unsafe.Pointer) unsafe.Pointer { + ts := *(*ThreadStart)(v) + free(v) + + setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g))) + + // faking funcs in go is a bit a... involved - but the following works :) + fn := uintptr(unsafe.Pointer(&ts.fn)) + (*(*func())(unsafe.Pointer(&fn)))() + + return nil +} + +// here we will store a pointer to the provided setg func +var setg_func uintptr + +//go:nosplit +//go:norace +func x_cgo_init(g *G, setg uintptr) { + var size size_t + + setg_func = setg + + size = pthread_get_stacksize_np(pthread_self()) + g.stacklo = uintptr(unsafe.Add(unsafe.Pointer(&size), -size+4096)) +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin_arm64.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin_arm64.go new file mode 100644 index 0000000..d0868f0 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin_arm64.go @@ -0,0 +1,88 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo + +package fakecgo + +import "unsafe" + +//go:nosplit +//go:norace +func _cgo_sys_thread_start(ts *ThreadStart) { + var attr pthread_attr_t + var ign, oset sigset_t + var p pthread_t + var size size_t + var err int + + sigfillset(&ign) + pthread_sigmask(SIG_SETMASK, &ign, &oset) + + size = pthread_get_stacksize_np(pthread_self()) + pthread_attr_init(&attr) + pthread_attr_setstacksize(&attr, size) + // Leave stacklo=0 and set stackhi=size; mstart will do the rest. + ts.g.stackhi = uintptr(size) + + err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts) + + pthread_sigmask(SIG_SETMASK, &oset, nil) + + if err != 0 { + print("fakecgo: pthread_create failed: ") + println(err) + abort() + } +} + +// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function +// +//go:linkname x_threadentry_trampoline threadentry_trampoline +var x_threadentry_trampoline byte +var threadentry_trampolineABI0 = &x_threadentry_trampoline + +//go:nosplit +//go:norace +func threadentry(v unsafe.Pointer) unsafe.Pointer { + ts := *(*ThreadStart)(v) + free(v) + + // TODO: support ios + //#if TARGET_OS_IPHONE + // darwin_arm_init_thread_exception_port(); + //#endif + setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g))) + + // faking funcs in go is a bit a... involved - but the following works :) + fn := uintptr(unsafe.Pointer(&ts.fn)) + (*(*func())(unsafe.Pointer(&fn)))() + + return nil +} + +// here we will store a pointer to the provided setg func +var setg_func uintptr + +// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c) +// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us +// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup +// This function can't be go:systemstack since go is not in a state where the systemcheck would work. +// +//go:nosplit +//go:norace +func x_cgo_init(g *G, setg uintptr) { + var size size_t + + setg_func = setg + size = pthread_get_stacksize_np(pthread_self()) + g.stacklo = uintptr(unsafe.Add(unsafe.Pointer(&size), -size+4096)) + + //TODO: support ios + //#if TARGET_OS_IPHONE + // darwin_arm_init_mach_exception_handler(); + // darwin_arm_init_thread_exception_port(); + // init_working_dir(); + //#endif +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_freebsd_amd64.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_freebsd_amd64.go new file mode 100644 index 0000000..c9ff715 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_freebsd_amd64.go @@ -0,0 +1,95 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo + +package fakecgo + +import "unsafe" + +//go:nosplit +func _cgo_sys_thread_start(ts *ThreadStart) { + var attr pthread_attr_t + var ign, oset sigset_t + var p pthread_t + var size size_t + var err int + + //fprintf(stderr, "runtime/cgo: _cgo_sys_thread_start: fn=%p, g=%p\n", ts->fn, ts->g); // debug + sigfillset(&ign) + pthread_sigmask(SIG_SETMASK, &ign, &oset) + + pthread_attr_init(&attr) + pthread_attr_getstacksize(&attr, &size) + // Leave stacklo=0 and set stackhi=size; mstart will do the rest. + ts.g.stackhi = uintptr(size) + + err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts) + + pthread_sigmask(SIG_SETMASK, &oset, nil) + + if err != 0 { + print("fakecgo: pthread_create failed: ") + println(err) + abort() + } +} + +// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function +// +//go:linkname x_threadentry_trampoline threadentry_trampoline +var x_threadentry_trampoline byte +var threadentry_trampolineABI0 = &x_threadentry_trampoline + +//go:nosplit +func threadentry(v unsafe.Pointer) unsafe.Pointer { + ts := *(*ThreadStart)(v) + free(v) + + setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g))) + + // faking funcs in go is a bit a... involved - but the following works :) + fn := uintptr(unsafe.Pointer(&ts.fn)) + (*(*func())(unsafe.Pointer(&fn)))() + + return nil +} + +// here we will store a pointer to the provided setg func +var setg_func uintptr + +//go:nosplit +func x_cgo_init(g *G, setg uintptr) { + var size size_t + var attr *pthread_attr_t + + /* The memory sanitizer distributed with versions of clang + before 3.8 has a bug: if you call mmap before malloc, mmap + may return an address that is later overwritten by the msan + library. Avoid this problem by forcing a call to malloc + here, before we ever call malloc. + + This is only required for the memory sanitizer, so it's + unfortunate that we always run it. It should be possible + to remove this when we no longer care about versions of + clang before 3.8. The test for this is + misc/cgo/testsanitizers. + + GCC works hard to eliminate a seemingly unnecessary call to + malloc, so we actually use the memory we allocate. */ + + setg_func = setg + attr = (*pthread_attr_t)(malloc(unsafe.Sizeof(*attr))) + if attr == nil { + println("fakecgo: malloc failed") + abort() + } + pthread_attr_init(attr) + pthread_attr_getstacksize(attr, &size) + // runtime/cgo uses __builtin_frame_address(0) instead of `uintptr(unsafe.Pointer(&size))` + // but this should be OK since we are taking the address of the first variable in this function. + g.stacklo = uintptr(unsafe.Pointer(&size)) - uintptr(size) + 4096 + pthread_attr_destroy(attr) + free(unsafe.Pointer(attr)) +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_freebsd_arm64.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_freebsd_arm64.go new file mode 100644 index 0000000..e3a060b --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_freebsd_arm64.go @@ -0,0 +1,98 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo + +package fakecgo + +import "unsafe" + +//go:nosplit +func _cgo_sys_thread_start(ts *ThreadStart) { + var attr pthread_attr_t + var ign, oset sigset_t + var p pthread_t + var size size_t + var err int + + // fprintf(stderr, "runtime/cgo: _cgo_sys_thread_start: fn=%p, g=%p\n", ts->fn, ts->g); // debug + sigfillset(&ign) + pthread_sigmask(SIG_SETMASK, &ign, &oset) + + pthread_attr_init(&attr) + pthread_attr_getstacksize(&attr, &size) + // Leave stacklo=0 and set stackhi=size; mstart will do the rest. + ts.g.stackhi = uintptr(size) + + err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts) + + pthread_sigmask(SIG_SETMASK, &oset, nil) + + if err != 0 { + print("fakecgo: pthread_create failed: ") + println(err) + abort() + } +} + +// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function +// +//go:linkname x_threadentry_trampoline threadentry_trampoline +var x_threadentry_trampoline byte +var threadentry_trampolineABI0 = &x_threadentry_trampoline + +//go:nosplit +func threadentry(v unsafe.Pointer) unsafe.Pointer { + ts := *(*ThreadStart)(v) + free(v) + + setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g))) + + // faking funcs in go is a bit a... involved - but the following works :) + fn := uintptr(unsafe.Pointer(&ts.fn)) + (*(*func())(unsafe.Pointer(&fn)))() + + return nil +} + +// here we will store a pointer to the provided setg func +var setg_func uintptr + +// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c) +// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us +// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup +// This function can't be go:systemstack since go is not in a state where the systemcheck would work. +// +//go:nosplit +func x_cgo_init(g *G, setg uintptr) { + var size size_t + var attr *pthread_attr_t + + /* The memory sanitizer distributed with versions of clang + before 3.8 has a bug: if you call mmap before malloc, mmap + may return an address that is later overwritten by the msan + library. Avoid this problem by forcing a call to malloc + here, before we ever call malloc. + + This is only required for the memory sanitizer, so it's + unfortunate that we always run it. It should be possible + to remove this when we no longer care about versions of + clang before 3.8. The test for this is + misc/cgo/testsanitizers. + + GCC works hard to eliminate a seemingly unnecessary call to + malloc, so we actually use the memory we allocate. */ + + setg_func = setg + attr = (*pthread_attr_t)(malloc(unsafe.Sizeof(*attr))) + if attr == nil { + println("fakecgo: malloc failed") + abort() + } + pthread_attr_init(attr) + pthread_attr_getstacksize(attr, &size) + g.stacklo = uintptr(unsafe.Pointer(&size)) - uintptr(size) + 4096 + pthread_attr_destroy(attr) + free(unsafe.Pointer(attr)) +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_libinit.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_libinit.go new file mode 100644 index 0000000..d229d84 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_libinit.go @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || freebsd || linux) + +package fakecgo + +import ( + "syscall" + "unsafe" +) + +var ( + pthread_g pthread_key_t + + runtime_init_cond = PTHREAD_COND_INITIALIZER + runtime_init_mu = PTHREAD_MUTEX_INITIALIZER + runtime_init_done int +) + +//go:nosplit +func x_cgo_notify_runtime_init_done() { + pthread_mutex_lock(&runtime_init_mu) + runtime_init_done = 1 + pthread_cond_broadcast(&runtime_init_cond) + pthread_mutex_unlock(&runtime_init_mu) +} + +// Store the g into a thread-specific value associated with the pthread key pthread_g. +// And pthread_key_destructor will dropm when the thread is exiting. +func x_cgo_bindm(g unsafe.Pointer) { + // We assume this will always succeed, otherwise, there might be extra M leaking, + // when a C thread exits after a cgo call. + // We only invoke this function once per thread in runtime.needAndBindM, + // and the next calls just reuse the bound m. + pthread_setspecific(pthread_g, g) +} + +// _cgo_try_pthread_create retries pthread_create if it fails with +// EAGAIN. +// +//go:nosplit +//go:norace +func _cgo_try_pthread_create(thread *pthread_t, attr *pthread_attr_t, pfn unsafe.Pointer, arg *ThreadStart) int { + var ts syscall.Timespec + // tries needs to be the same type as syscall.Timespec.Nsec + // but the fields are int32 on 32bit and int64 on 64bit. + // tries is assigned to syscall.Timespec.Nsec in order to match its type. + tries := ts.Nsec + var err int + + for tries = 0; tries < 20; tries++ { + // inlined this call because it ran out of stack when inlining was disabled + err = int(call5(pthread_createABI0, uintptr(unsafe.Pointer(thread)), uintptr(unsafe.Pointer(attr)), uintptr(pfn), uintptr(unsafe.Pointer(arg)), 0)) + if err == 0 { + // inlined this call because it ran out of stack when inlining was disabled + call5(pthread_detachABI0, uintptr(*thread), 0, 0, 0, 0) + return 0 + } + if err != int(syscall.EAGAIN) { + return err + } + ts.Sec = 0 + ts.Nsec = (tries + 1) * 1000 * 1000 // Milliseconds. + // inlined this call because it ran out of stack when inlining was disabled + call5(nanosleepABI0, uintptr(unsafe.Pointer(&ts)), 0, 0, 0, 0) + } + return int(syscall.EAGAIN) +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_linux_amd64.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_linux_amd64.go new file mode 100644 index 0000000..c9ff715 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_linux_amd64.go @@ -0,0 +1,95 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo + +package fakecgo + +import "unsafe" + +//go:nosplit +func _cgo_sys_thread_start(ts *ThreadStart) { + var attr pthread_attr_t + var ign, oset sigset_t + var p pthread_t + var size size_t + var err int + + //fprintf(stderr, "runtime/cgo: _cgo_sys_thread_start: fn=%p, g=%p\n", ts->fn, ts->g); // debug + sigfillset(&ign) + pthread_sigmask(SIG_SETMASK, &ign, &oset) + + pthread_attr_init(&attr) + pthread_attr_getstacksize(&attr, &size) + // Leave stacklo=0 and set stackhi=size; mstart will do the rest. + ts.g.stackhi = uintptr(size) + + err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts) + + pthread_sigmask(SIG_SETMASK, &oset, nil) + + if err != 0 { + print("fakecgo: pthread_create failed: ") + println(err) + abort() + } +} + +// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function +// +//go:linkname x_threadentry_trampoline threadentry_trampoline +var x_threadentry_trampoline byte +var threadentry_trampolineABI0 = &x_threadentry_trampoline + +//go:nosplit +func threadentry(v unsafe.Pointer) unsafe.Pointer { + ts := *(*ThreadStart)(v) + free(v) + + setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g))) + + // faking funcs in go is a bit a... involved - but the following works :) + fn := uintptr(unsafe.Pointer(&ts.fn)) + (*(*func())(unsafe.Pointer(&fn)))() + + return nil +} + +// here we will store a pointer to the provided setg func +var setg_func uintptr + +//go:nosplit +func x_cgo_init(g *G, setg uintptr) { + var size size_t + var attr *pthread_attr_t + + /* The memory sanitizer distributed with versions of clang + before 3.8 has a bug: if you call mmap before malloc, mmap + may return an address that is later overwritten by the msan + library. Avoid this problem by forcing a call to malloc + here, before we ever call malloc. + + This is only required for the memory sanitizer, so it's + unfortunate that we always run it. It should be possible + to remove this when we no longer care about versions of + clang before 3.8. The test for this is + misc/cgo/testsanitizers. + + GCC works hard to eliminate a seemingly unnecessary call to + malloc, so we actually use the memory we allocate. */ + + setg_func = setg + attr = (*pthread_attr_t)(malloc(unsafe.Sizeof(*attr))) + if attr == nil { + println("fakecgo: malloc failed") + abort() + } + pthread_attr_init(attr) + pthread_attr_getstacksize(attr, &size) + // runtime/cgo uses __builtin_frame_address(0) instead of `uintptr(unsafe.Pointer(&size))` + // but this should be OK since we are taking the address of the first variable in this function. + g.stacklo = uintptr(unsafe.Pointer(&size)) - uintptr(size) + 4096 + pthread_attr_destroy(attr) + free(unsafe.Pointer(attr)) +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_linux_arm64.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_linux_arm64.go new file mode 100644 index 0000000..a3b1cca --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_linux_arm64.go @@ -0,0 +1,98 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo + +package fakecgo + +import "unsafe" + +//go:nosplit +func _cgo_sys_thread_start(ts *ThreadStart) { + var attr pthread_attr_t + var ign, oset sigset_t + var p pthread_t + var size size_t + var err int + + //fprintf(stderr, "runtime/cgo: _cgo_sys_thread_start: fn=%p, g=%p\n", ts->fn, ts->g); // debug + sigfillset(&ign) + pthread_sigmask(SIG_SETMASK, &ign, &oset) + + pthread_attr_init(&attr) + pthread_attr_getstacksize(&attr, &size) + // Leave stacklo=0 and set stackhi=size; mstart will do the rest. + ts.g.stackhi = uintptr(size) + + err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts) + + pthread_sigmask(SIG_SETMASK, &oset, nil) + + if err != 0 { + print("fakecgo: pthread_create failed: ") + println(err) + abort() + } +} + +// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function +// +//go:linkname x_threadentry_trampoline threadentry_trampoline +var x_threadentry_trampoline byte +var threadentry_trampolineABI0 = &x_threadentry_trampoline + +//go:nosplit +func threadentry(v unsafe.Pointer) unsafe.Pointer { + ts := *(*ThreadStart)(v) + free(v) + + setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g))) + + // faking funcs in go is a bit a... involved - but the following works :) + fn := uintptr(unsafe.Pointer(&ts.fn)) + (*(*func())(unsafe.Pointer(&fn)))() + + return nil +} + +// here we will store a pointer to the provided setg func +var setg_func uintptr + +// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c) +// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us +// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup +// This function can't be go:systemstack since go is not in a state where the systemcheck would work. +// +//go:nosplit +func x_cgo_init(g *G, setg uintptr) { + var size size_t + var attr *pthread_attr_t + + /* The memory sanitizer distributed with versions of clang + before 3.8 has a bug: if you call mmap before malloc, mmap + may return an address that is later overwritten by the msan + library. Avoid this problem by forcing a call to malloc + here, before we ever call malloc. + + This is only required for the memory sanitizer, so it's + unfortunate that we always run it. It should be possible + to remove this when we no longer care about versions of + clang before 3.8. The test for this is + misc/cgo/testsanitizers. + + GCC works hard to eliminate a seemingly unnecessary call to + malloc, so we actually use the memory we allocate. */ + + setg_func = setg + attr = (*pthread_attr_t)(malloc(unsafe.Sizeof(*attr))) + if attr == nil { + println("fakecgo: malloc failed") + abort() + } + pthread_attr_init(attr) + pthread_attr_getstacksize(attr, &size) + g.stacklo = uintptr(unsafe.Pointer(&size)) - uintptr(size) + 4096 + pthread_attr_destroy(attr) + free(unsafe.Pointer(attr)) +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_setenv.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_setenv.go new file mode 100644 index 0000000..e42d84f --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_setenv.go @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || freebsd || linux) + +package fakecgo + +//go:nosplit +//go:norace +func x_cgo_setenv(arg *[2]*byte) { + setenv(arg[0], arg[1], 1) +} + +//go:nosplit +//go:norace +func x_cgo_unsetenv(arg *[1]*byte) { + unsetenv(arg[0]) +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/go_util.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_util.go new file mode 100644 index 0000000..0ac10d1 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/go_util.go @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || freebsd || linux) + +package fakecgo + +import "unsafe" + +// _cgo_thread_start is split into three parts in cgo since only one part is system dependent (keep it here for easier handling) + +// _cgo_thread_start(ThreadStart *arg) (runtime/cgo/gcc_util.c) +// This get's called instead of the go code for creating new threads +// -> pthread_* stuff is used, so threads are setup correctly for C +// If this is missing, TLS is only setup correctly on thread 1! +// This function should be go:systemstack instead of go:nosplit (but that requires runtime) +// +//go:nosplit +//go:norace +func x_cgo_thread_start(arg *ThreadStart) { + var ts *ThreadStart + // Make our own copy that can persist after we return. + // _cgo_tsan_acquire(); + ts = (*ThreadStart)(malloc(unsafe.Sizeof(*ts))) + // _cgo_tsan_release(); + if ts == nil { + println("fakecgo: out of memory in thread_start") + abort() + } + // *ts = *arg would cause a writebarrier so copy using slices + s1 := unsafe.Slice((*uintptr)(unsafe.Pointer(ts)), unsafe.Sizeof(*ts)/8) + s2 := unsafe.Slice((*uintptr)(unsafe.Pointer(arg)), unsafe.Sizeof(*arg)/8) + for i := range s2 { + s1[i] = s2[i] + } + _cgo_sys_thread_start(ts) // OS-dependent half +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/iscgo.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/iscgo.go new file mode 100644 index 0000000..28af41c --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/iscgo.go @@ -0,0 +1,19 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo && (darwin || freebsd || linux) + +// The runtime package contains an uninitialized definition +// for runtime·iscgo. Override it to tell the runtime we're here. +// There are various function pointers that should be set too, +// but those depend on dynamic linker magic to get initialized +// correctly, and sometimes they break. This variable is a +// backup: it depends only on old C style static linking rules. + +package fakecgo + +import _ "unsafe" // for go:linkname + +//go:linkname _iscgo runtime.iscgo +var _iscgo bool = true diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo.go new file mode 100644 index 0000000..38f9441 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo.go @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || freebsd || linux) + +package fakecgo + +type ( + size_t uintptr + // Sources: + // Darwin (32 bytes) - https://github.com/apple/darwin-xnu/blob/2ff845c2e033bd0ff64b5b6aa6063a1f8f65aa32/bsd/sys/_types.h#L74 + // FreeBSD (32 bytes) - https://github.com/DoctorWkt/xv6-freebsd/blob/d2a294c2a984baed27676068b15ed9a29b06ab6f/include/signal.h#L98C9-L98C21 + // Linux (128 bytes) - https://github.com/torvalds/linux/blob/ab75170520d4964f3acf8bb1f91d34cbc650688e/arch/x86/include/asm/signal.h#L25 + sigset_t [128]byte + pthread_attr_t [64]byte + pthread_t int + pthread_key_t uint64 +) + +// for pthread_sigmask: + +type sighow int32 + +const ( + SIG_BLOCK sighow = 0 + SIG_UNBLOCK sighow = 1 + SIG_SETMASK sighow = 2 +) + +type G struct { + stacklo uintptr + stackhi uintptr +} + +type ThreadStart struct { + g *G + tls *uintptr + fn uintptr +} diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_darwin.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_darwin.go new file mode 100644 index 0000000..af14833 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_darwin.go @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo + +package fakecgo + +type ( + pthread_mutex_t struct { + sig int64 + opaque [56]byte + } + pthread_cond_t struct { + sig int64 + opaque [40]byte + } +) + +var ( + PTHREAD_COND_INITIALIZER = pthread_cond_t{sig: 0x3CB0B1BB} + PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t{sig: 0x32AAABA7} +) diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_freebsd.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_freebsd.go new file mode 100644 index 0000000..ca1f722 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_freebsd.go @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo + +package fakecgo + +type ( + pthread_cond_t uintptr + pthread_mutex_t uintptr +) + +var ( + PTHREAD_COND_INITIALIZER = pthread_cond_t(0) + PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t(0) +) diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_linux.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_linux.go new file mode 100644 index 0000000..c4b6e9e --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_linux.go @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo + +package fakecgo + +type ( + pthread_cond_t [48]byte + pthread_mutex_t [48]byte +) + +var ( + PTHREAD_COND_INITIALIZER = pthread_cond_t{} + PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t{} +) diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/setenv.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/setenv.go new file mode 100644 index 0000000..f30af0e --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/setenv.go @@ -0,0 +1,19 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !cgo && (darwin || freebsd || linux) + +package fakecgo + +import _ "unsafe" // for go:linkname + +//go:linkname x_cgo_setenv_trampoline x_cgo_setenv_trampoline +//go:linkname _cgo_setenv runtime._cgo_setenv +var x_cgo_setenv_trampoline byte +var _cgo_setenv = &x_cgo_setenv_trampoline + +//go:linkname x_cgo_unsetenv_trampoline x_cgo_unsetenv_trampoline +//go:linkname _cgo_unsetenv runtime._cgo_unsetenv +var x_cgo_unsetenv_trampoline byte +var _cgo_unsetenv = &x_cgo_unsetenv_trampoline diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols.go new file mode 100644 index 0000000..7a3a1bb --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols.go @@ -0,0 +1,201 @@ +// Code generated by 'go generate' with gen.go. DO NOT EDIT. + +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || freebsd || linux) + +package fakecgo + +import ( + "syscall" + "unsafe" +) + +// setg_trampoline calls setg with the G provided +func setg_trampoline(setg uintptr, G uintptr) + +// call5 takes fn the C function and 5 arguments and calls the function with those arguments +func call5(fn, a1, a2, a3, a4, a5 uintptr) uintptr + +//go:nosplit +func malloc(size uintptr) unsafe.Pointer { + ret := call5(mallocABI0, uintptr(size), 0, 0, 0, 0) + // this indirection is to avoid go vet complaining about possible misuse of unsafe.Pointer + return *(*unsafe.Pointer)(unsafe.Pointer(&ret)) +} + +//go:nosplit +func free(ptr unsafe.Pointer) { + call5(freeABI0, uintptr(ptr), 0, 0, 0, 0) +} + +//go:nosplit +func setenv(name *byte, value *byte, overwrite int32) int32 { + return int32(call5(setenvABI0, uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(value)), uintptr(overwrite), 0, 0)) +} + +//go:nosplit +func unsetenv(name *byte) int32 { + return int32(call5(unsetenvABI0, uintptr(unsafe.Pointer(name)), 0, 0, 0, 0)) +} + +//go:nosplit +func sigfillset(set *sigset_t) int32 { + return int32(call5(sigfillsetABI0, uintptr(unsafe.Pointer(set)), 0, 0, 0, 0)) +} + +//go:nosplit +func nanosleep(ts *syscall.Timespec, rem *syscall.Timespec) int32 { + return int32(call5(nanosleepABI0, uintptr(unsafe.Pointer(ts)), uintptr(unsafe.Pointer(rem)), 0, 0, 0)) +} + +//go:nosplit +func abort() { + call5(abortABI0, 0, 0, 0, 0, 0) +} + +//go:nosplit +func pthread_attr_init(attr *pthread_attr_t) int32 { + return int32(call5(pthread_attr_initABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0)) +} + +//go:nosplit +func pthread_create(thread *pthread_t, attr *pthread_attr_t, start unsafe.Pointer, arg unsafe.Pointer) int32 { + return int32(call5(pthread_createABI0, uintptr(unsafe.Pointer(thread)), uintptr(unsafe.Pointer(attr)), uintptr(start), uintptr(arg), 0)) +} + +//go:nosplit +func pthread_detach(thread pthread_t) int32 { + return int32(call5(pthread_detachABI0, uintptr(thread), 0, 0, 0, 0)) +} + +//go:nosplit +func pthread_sigmask(how sighow, ign *sigset_t, oset *sigset_t) int32 { + return int32(call5(pthread_sigmaskABI0, uintptr(how), uintptr(unsafe.Pointer(ign)), uintptr(unsafe.Pointer(oset)), 0, 0)) +} + +//go:nosplit +func pthread_self() pthread_t { + return pthread_t(call5(pthread_selfABI0, 0, 0, 0, 0, 0)) +} + +//go:nosplit +func pthread_get_stacksize_np(thread pthread_t) size_t { + return size_t(call5(pthread_get_stacksize_npABI0, uintptr(thread), 0, 0, 0, 0)) +} + +//go:nosplit +func pthread_attr_getstacksize(attr *pthread_attr_t, stacksize *size_t) int32 { + return int32(call5(pthread_attr_getstacksizeABI0, uintptr(unsafe.Pointer(attr)), uintptr(unsafe.Pointer(stacksize)), 0, 0, 0)) +} + +//go:nosplit +func pthread_attr_setstacksize(attr *pthread_attr_t, size size_t) int32 { + return int32(call5(pthread_attr_setstacksizeABI0, uintptr(unsafe.Pointer(attr)), uintptr(size), 0, 0, 0)) +} + +//go:nosplit +func pthread_attr_destroy(attr *pthread_attr_t) int32 { + return int32(call5(pthread_attr_destroyABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0)) +} + +//go:nosplit +func pthread_mutex_lock(mutex *pthread_mutex_t) int32 { + return int32(call5(pthread_mutex_lockABI0, uintptr(unsafe.Pointer(mutex)), 0, 0, 0, 0)) +} + +//go:nosplit +func pthread_mutex_unlock(mutex *pthread_mutex_t) int32 { + return int32(call5(pthread_mutex_unlockABI0, uintptr(unsafe.Pointer(mutex)), 0, 0, 0, 0)) +} + +//go:nosplit +func pthread_cond_broadcast(cond *pthread_cond_t) int32 { + return int32(call5(pthread_cond_broadcastABI0, uintptr(unsafe.Pointer(cond)), 0, 0, 0, 0)) +} + +//go:nosplit +func pthread_setspecific(key pthread_key_t, value unsafe.Pointer) int32 { + return int32(call5(pthread_setspecificABI0, uintptr(key), uintptr(value), 0, 0, 0)) +} + +//go:linkname _malloc _malloc +var _malloc uintptr +var mallocABI0 = uintptr(unsafe.Pointer(&_malloc)) + +//go:linkname _free _free +var _free uintptr +var freeABI0 = uintptr(unsafe.Pointer(&_free)) + +//go:linkname _setenv _setenv +var _setenv uintptr +var setenvABI0 = uintptr(unsafe.Pointer(&_setenv)) + +//go:linkname _unsetenv _unsetenv +var _unsetenv uintptr +var unsetenvABI0 = uintptr(unsafe.Pointer(&_unsetenv)) + +//go:linkname _sigfillset _sigfillset +var _sigfillset uintptr +var sigfillsetABI0 = uintptr(unsafe.Pointer(&_sigfillset)) + +//go:linkname _nanosleep _nanosleep +var _nanosleep uintptr +var nanosleepABI0 = uintptr(unsafe.Pointer(&_nanosleep)) + +//go:linkname _abort _abort +var _abort uintptr +var abortABI0 = uintptr(unsafe.Pointer(&_abort)) + +//go:linkname _pthread_attr_init _pthread_attr_init +var _pthread_attr_init uintptr +var pthread_attr_initABI0 = uintptr(unsafe.Pointer(&_pthread_attr_init)) + +//go:linkname _pthread_create _pthread_create +var _pthread_create uintptr +var pthread_createABI0 = uintptr(unsafe.Pointer(&_pthread_create)) + +//go:linkname _pthread_detach _pthread_detach +var _pthread_detach uintptr +var pthread_detachABI0 = uintptr(unsafe.Pointer(&_pthread_detach)) + +//go:linkname _pthread_sigmask _pthread_sigmask +var _pthread_sigmask uintptr +var pthread_sigmaskABI0 = uintptr(unsafe.Pointer(&_pthread_sigmask)) + +//go:linkname _pthread_self _pthread_self +var _pthread_self uintptr +var pthread_selfABI0 = uintptr(unsafe.Pointer(&_pthread_self)) + +//go:linkname _pthread_get_stacksize_np _pthread_get_stacksize_np +var _pthread_get_stacksize_np uintptr +var pthread_get_stacksize_npABI0 = uintptr(unsafe.Pointer(&_pthread_get_stacksize_np)) + +//go:linkname _pthread_attr_getstacksize _pthread_attr_getstacksize +var _pthread_attr_getstacksize uintptr +var pthread_attr_getstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_getstacksize)) + +//go:linkname _pthread_attr_setstacksize _pthread_attr_setstacksize +var _pthread_attr_setstacksize uintptr +var pthread_attr_setstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_setstacksize)) + +//go:linkname _pthread_attr_destroy _pthread_attr_destroy +var _pthread_attr_destroy uintptr +var pthread_attr_destroyABI0 = uintptr(unsafe.Pointer(&_pthread_attr_destroy)) + +//go:linkname _pthread_mutex_lock _pthread_mutex_lock +var _pthread_mutex_lock uintptr +var pthread_mutex_lockABI0 = uintptr(unsafe.Pointer(&_pthread_mutex_lock)) + +//go:linkname _pthread_mutex_unlock _pthread_mutex_unlock +var _pthread_mutex_unlock uintptr +var pthread_mutex_unlockABI0 = uintptr(unsafe.Pointer(&_pthread_mutex_unlock)) + +//go:linkname _pthread_cond_broadcast _pthread_cond_broadcast +var _pthread_cond_broadcast uintptr +var pthread_cond_broadcastABI0 = uintptr(unsafe.Pointer(&_pthread_cond_broadcast)) + +//go:linkname _pthread_setspecific _pthread_setspecific +var _pthread_setspecific uintptr +var pthread_setspecificABI0 = uintptr(unsafe.Pointer(&_pthread_setspecific)) diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_darwin.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_darwin.go new file mode 100644 index 0000000..54aaa46 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_darwin.go @@ -0,0 +1,29 @@ +// Code generated by 'go generate' with gen.go. DO NOT EDIT. + +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo + +package fakecgo + +//go:cgo_import_dynamic purego_malloc malloc "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_free free "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_setenv setenv "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_unsetenv unsetenv "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_sigfillset sigfillset "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_nanosleep nanosleep "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_abort abort "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_create pthread_create "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_detach pthread_detach "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_self pthread_self "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_get_stacksize_np pthread_get_stacksize_np "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_attr_setstacksize pthread_attr_setstacksize "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "/usr/lib/libSystem.B.dylib" +//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "/usr/lib/libSystem.B.dylib" diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_freebsd.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_freebsd.go new file mode 100644 index 0000000..8153811 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_freebsd.go @@ -0,0 +1,29 @@ +// Code generated by 'go generate' with gen.go. DO NOT EDIT. + +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo + +package fakecgo + +//go:cgo_import_dynamic purego_malloc malloc "libc.so.7" +//go:cgo_import_dynamic purego_free free "libc.so.7" +//go:cgo_import_dynamic purego_setenv setenv "libc.so.7" +//go:cgo_import_dynamic purego_unsetenv unsetenv "libc.so.7" +//go:cgo_import_dynamic purego_sigfillset sigfillset "libc.so.7" +//go:cgo_import_dynamic purego_nanosleep nanosleep "libc.so.7" +//go:cgo_import_dynamic purego_abort abort "libc.so.7" +//go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "libpthread.so" +//go:cgo_import_dynamic purego_pthread_create pthread_create "libpthread.so" +//go:cgo_import_dynamic purego_pthread_detach pthread_detach "libpthread.so" +//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "libpthread.so" +//go:cgo_import_dynamic purego_pthread_self pthread_self "libpthread.so" +//go:cgo_import_dynamic purego_pthread_get_stacksize_np pthread_get_stacksize_np "libpthread.so" +//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "libpthread.so" +//go:cgo_import_dynamic purego_pthread_attr_setstacksize pthread_attr_setstacksize "libpthread.so" +//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "libpthread.so" +//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "libpthread.so" +//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "libpthread.so" +//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "libpthread.so" +//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "libpthread.so" diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_linux.go b/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_linux.go new file mode 100644 index 0000000..180057d --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_linux.go @@ -0,0 +1,29 @@ +// Code generated by 'go generate' with gen.go. DO NOT EDIT. + +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo + +package fakecgo + +//go:cgo_import_dynamic purego_malloc malloc "libc.so.6" +//go:cgo_import_dynamic purego_free free "libc.so.6" +//go:cgo_import_dynamic purego_setenv setenv "libc.so.6" +//go:cgo_import_dynamic purego_unsetenv unsetenv "libc.so.6" +//go:cgo_import_dynamic purego_sigfillset sigfillset "libc.so.6" +//go:cgo_import_dynamic purego_nanosleep nanosleep "libc.so.6" +//go:cgo_import_dynamic purego_abort abort "libc.so.6" +//go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_create pthread_create "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_detach pthread_detach "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_self pthread_self "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_get_stacksize_np pthread_get_stacksize_np "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_attr_setstacksize pthread_attr_setstacksize "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "libpthread.so.0" +//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "libpthread.so.0" diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_amd64.s b/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_amd64.s new file mode 100644 index 0000000..c9a3cc0 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_amd64.s @@ -0,0 +1,104 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || linux || freebsd) + +/* +trampoline for emulating required C functions for cgo in go (see cgo.go) +(we convert cdecl calling convention to go and vice-versa) + +Since we're called from go and call into C we can cheat a bit with the calling conventions: + - in go all the registers are caller saved + - in C we have a couple of callee saved registers + +=> we can use BX, R12, R13, R14, R15 instead of the stack + +C Calling convention cdecl used here (we only need integer args): +1. arg: DI +2. arg: SI +3. arg: DX +4. arg: CX +5. arg: R8 +6. arg: R9 +We don't need floats with these functions -> AX=0 +return value will be in AX +*/ +#include "textflag.h" +#include "go_asm.h" + +// these trampolines map the gcc ABI to Go ABI and then calls into the Go equivalent functions. + +TEXT x_cgo_init_trampoline(SB), NOSPLIT, $16 + MOVQ DI, AX + MOVQ SI, BX + MOVQ ·x_cgo_init_call(SB), DX + MOVQ (DX), CX + CALL CX + RET + +TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $8 + MOVQ DI, AX + MOVQ ·x_cgo_thread_start_call(SB), DX + MOVQ (DX), CX + CALL CX + RET + +TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $8 + MOVQ DI, AX + MOVQ ·x_cgo_setenv_call(SB), DX + MOVQ (DX), CX + CALL CX + RET + +TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $8 + MOVQ DI, AX + MOVQ ·x_cgo_unsetenv_call(SB), DX + MOVQ (DX), CX + CALL CX + RET + +TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0 + CALL ·x_cgo_notify_runtime_init_done(SB) + RET + +TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0 + CALL ·x_cgo_bindm(SB) + RET + +// func setg_trampoline(setg uintptr, g uintptr) +TEXT ·setg_trampoline(SB), NOSPLIT, $0-16 + MOVQ G+8(FP), DI + MOVQ setg+0(FP), BX + XORL AX, AX + CALL BX + RET + +TEXT threadentry_trampoline(SB), NOSPLIT, $16 + MOVQ DI, AX + MOVQ ·threadentry_call(SB), DX + MOVQ (DX), CX + CALL CX + RET + +TEXT ·call5(SB), NOSPLIT, $0-56 + MOVQ fn+0(FP), BX + MOVQ a1+8(FP), DI + MOVQ a2+16(FP), SI + MOVQ a3+24(FP), DX + MOVQ a4+32(FP), CX + MOVQ a5+40(FP), R8 + + XORL AX, AX // no floats + + PUSHQ BP // save BP + MOVQ SP, BP // save SP inside BP bc BP is callee-saved + SUBQ $16, SP // allocate space for alignment + ANDQ $-16, SP // align on 16 bytes for SSE + + CALL BX + + MOVQ BP, SP // get SP back + POPQ BP // restore BP + + MOVQ AX, ret+48(FP) + RET diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_arm64.s b/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_arm64.s new file mode 100644 index 0000000..9dbdbc0 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_arm64.s @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || freebsd || linux) + +#include "textflag.h" +#include "go_asm.h" + +// these trampolines map the gcc ABI to Go ABI and then calls into the Go equivalent functions. + +TEXT x_cgo_init_trampoline(SB), NOSPLIT, $0-0 + MOVD R0, 8(RSP) + MOVD R1, 16(RSP) + MOVD ·x_cgo_init_call(SB), R26 + MOVD (R26), R2 + CALL (R2) + RET + +TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $0-0 + MOVD R0, 8(RSP) + MOVD ·x_cgo_thread_start_call(SB), R26 + MOVD (R26), R2 + CALL (R2) + RET + +TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $0-0 + MOVD R0, 8(RSP) + MOVD ·x_cgo_setenv_call(SB), R26 + MOVD (R26), R2 + CALL (R2) + RET + +TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $0-0 + MOVD R0, 8(RSP) + MOVD ·x_cgo_unsetenv_call(SB), R26 + MOVD (R26), R2 + CALL (R2) + RET + +TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0-0 + CALL ·x_cgo_notify_runtime_init_done(SB) + RET + +TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0 + CALL ·x_cgo_bindm(SB) + RET + +// func setg_trampoline(setg uintptr, g uintptr) +TEXT ·setg_trampoline(SB), NOSPLIT, $0-16 + MOVD G+8(FP), R0 + MOVD setg+0(FP), R1 + CALL R1 + RET + +TEXT threadentry_trampoline(SB), NOSPLIT, $0-0 + MOVD R0, 8(RSP) + MOVD ·threadentry_call(SB), R26 + MOVD (R26), R2 + CALL (R2) + MOVD $0, R0 // TODO: get the return value from threadentry + RET + +TEXT ·call5(SB), NOSPLIT, $0-0 + MOVD fn+0(FP), R6 + MOVD a1+8(FP), R0 + MOVD a2+16(FP), R1 + MOVD a3+24(FP), R2 + MOVD a4+32(FP), R3 + MOVD a5+40(FP), R4 + CALL R6 + MOVD R0, ret+48(FP) + RET diff --git a/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_stubs.s b/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_stubs.s new file mode 100644 index 0000000..a65b201 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_stubs.s @@ -0,0 +1,90 @@ +// Code generated by 'go generate' with gen.go. DO NOT EDIT. + +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +//go:build !cgo && (darwin || freebsd || linux) + +#include "textflag.h" + +// these stubs are here because it is not possible to go:linkname directly the C functions on darwin arm64 + +TEXT _malloc(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_malloc(SB) + RET + +TEXT _free(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_free(SB) + RET + +TEXT _setenv(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_setenv(SB) + RET + +TEXT _unsetenv(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_unsetenv(SB) + RET + +TEXT _sigfillset(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_sigfillset(SB) + RET + +TEXT _nanosleep(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_nanosleep(SB) + RET + +TEXT _abort(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_abort(SB) + RET + +TEXT _pthread_attr_init(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_attr_init(SB) + RET + +TEXT _pthread_create(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_create(SB) + RET + +TEXT _pthread_detach(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_detach(SB) + RET + +TEXT _pthread_sigmask(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_sigmask(SB) + RET + +TEXT _pthread_self(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_self(SB) + RET + +TEXT _pthread_get_stacksize_np(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_get_stacksize_np(SB) + RET + +TEXT _pthread_attr_getstacksize(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_attr_getstacksize(SB) + RET + +TEXT _pthread_attr_setstacksize(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_attr_setstacksize(SB) + RET + +TEXT _pthread_attr_destroy(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_attr_destroy(SB) + RET + +TEXT _pthread_mutex_lock(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_mutex_lock(SB) + RET + +TEXT _pthread_mutex_unlock(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_mutex_unlock(SB) + RET + +TEXT _pthread_cond_broadcast(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_cond_broadcast(SB) + RET + +TEXT _pthread_setspecific(SB), NOSPLIT|NOFRAME, $0-0 + JMP purego_pthread_setspecific(SB) + RET diff --git a/vendor/github.com/ebitengine/purego/internal/strings/strings.go b/vendor/github.com/ebitengine/purego/internal/strings/strings.go new file mode 100644 index 0000000..5b0d252 --- /dev/null +++ b/vendor/github.com/ebitengine/purego/internal/strings/strings.go @@ -0,0 +1,40 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2022 The Ebitengine Authors + +package strings + +import ( + "unsafe" +) + +// hasSuffix tests whether the string s ends with suffix. +func hasSuffix(s, suffix string) bool { + return len(s) >= len(suffix) && s[len(s)-len(suffix):] == suffix +} + +// CString converts a go string to *byte that can be passed to C code. +func CString(name string) *byte { + if hasSuffix(name, "\x00") { + return &(*(*[]byte)(unsafe.Pointer(&name)))[0] + } + b := make([]byte, len(name)+1) + copy(b, name) + return &b[0] +} + +// GoString copies a null-terminated char* to a Go string. +func GoString(c uintptr) string { + // We take the address and then dereference it to trick go vet from creating a possible misuse of unsafe.Pointer + ptr := *(*unsafe.Pointer)(unsafe.Pointer(&c)) + if ptr == nil { + return "" + } + var length int + for { + if *(*byte)(unsafe.Add(ptr, uintptr(length))) == '\x00' { + break + } + length++ + } + return string(unsafe.Slice((*byte)(ptr), length)) +} |