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authormo khan <mo@mokhan.ca>2025-05-11 21:12:57 -0600
committermo khan <mo@mokhan.ca>2025-05-11 21:12:57 -0600
commit60440f90dca28e99a31dd328c5f6d5dc0f9b6a2e (patch)
tree2f54adf55086516f162f0a55a5347e6b25f7f176 /vendor/github.com/ebitengine/purego/sys_arm64.s
parent05ca9b8d3a9c7203a3a3b590beaa400900bd9007 (diff)
chore: vendor go dependencies
Diffstat (limited to 'vendor/github.com/ebitengine/purego/sys_arm64.s')
-rw-r--r--vendor/github.com/ebitengine/purego/sys_arm64.s92
1 files changed, 92 insertions, 0 deletions
diff --git a/vendor/github.com/ebitengine/purego/sys_arm64.s b/vendor/github.com/ebitengine/purego/sys_arm64.s
new file mode 100644
index 0000000..a68fdb9
--- /dev/null
+++ b/vendor/github.com/ebitengine/purego/sys_arm64.s
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || freebsd || linux || windows
+
+#include "textflag.h"
+#include "go_asm.h"
+#include "funcdata.h"
+
+#define STACK_SIZE 64
+#define PTR_ADDRESS (STACK_SIZE - 8)
+
+// syscall15X calls a function in libc on behalf of the syscall package.
+// syscall15X takes a pointer to a struct like:
+// struct {
+// fn uintptr
+// a1 uintptr
+// a2 uintptr
+// a3 uintptr
+// a4 uintptr
+// a5 uintptr
+// a6 uintptr
+// a7 uintptr
+// a8 uintptr
+// a9 uintptr
+// a10 uintptr
+// a11 uintptr
+// a12 uintptr
+// a13 uintptr
+// a14 uintptr
+// a15 uintptr
+// r1 uintptr
+// r2 uintptr
+// err uintptr
+// }
+// syscall15X must be called on the g0 stack with the
+// C calling convention (use libcCall).
+GLOBL ·syscall15XABI0(SB), NOPTR|RODATA, $8
+DATA ·syscall15XABI0(SB)/8, $syscall15X(SB)
+TEXT syscall15X(SB), NOSPLIT, $0
+ SUB $STACK_SIZE, RSP // push structure pointer
+ MOVD R0, PTR_ADDRESS(RSP)
+ MOVD R0, R9
+
+ FMOVD syscall15Args_f1(R9), F0 // f1
+ FMOVD syscall15Args_f2(R9), F1 // f2
+ FMOVD syscall15Args_f3(R9), F2 // f3
+ FMOVD syscall15Args_f4(R9), F3 // f4
+ FMOVD syscall15Args_f5(R9), F4 // f5
+ FMOVD syscall15Args_f6(R9), F5 // f6
+ FMOVD syscall15Args_f7(R9), F6 // f7
+ FMOVD syscall15Args_f8(R9), F7 // f8
+
+ MOVD syscall15Args_a1(R9), R0 // a1
+ MOVD syscall15Args_a2(R9), R1 // a2
+ MOVD syscall15Args_a3(R9), R2 // a3
+ MOVD syscall15Args_a4(R9), R3 // a4
+ MOVD syscall15Args_a5(R9), R4 // a5
+ MOVD syscall15Args_a6(R9), R5 // a6
+ MOVD syscall15Args_a7(R9), R6 // a7
+ MOVD syscall15Args_a8(R9), R7 // a8
+ MOVD syscall15Args_arm64_r8(R9), R8 // r8
+
+ MOVD syscall15Args_a9(R9), R10
+ MOVD R10, 0(RSP) // push a9 onto stack
+ MOVD syscall15Args_a10(R9), R10
+ MOVD R10, 8(RSP) // push a10 onto stack
+ MOVD syscall15Args_a11(R9), R10
+ MOVD R10, 16(RSP) // push a11 onto stack
+ MOVD syscall15Args_a12(R9), R10
+ MOVD R10, 24(RSP) // push a12 onto stack
+ MOVD syscall15Args_a13(R9), R10
+ MOVD R10, 32(RSP) // push a13 onto stack
+ MOVD syscall15Args_a14(R9), R10
+ MOVD R10, 40(RSP) // push a14 onto stack
+ MOVD syscall15Args_a15(R9), R10
+ MOVD R10, 48(RSP) // push a15 onto stack
+
+ MOVD syscall15Args_fn(R9), R10 // fn
+ BL (R10)
+
+ MOVD PTR_ADDRESS(RSP), R2 // pop structure pointer
+ ADD $STACK_SIZE, RSP
+
+ MOVD R0, syscall15Args_a1(R2) // save r1
+ MOVD R1, syscall15Args_a2(R2) // save r3
+ FMOVD F0, syscall15Args_f1(R2) // save f0
+ FMOVD F1, syscall15Args_f2(R2) // save f1
+ FMOVD F2, syscall15Args_f3(R2) // save f2
+ FMOVD F3, syscall15Args_f4(R2) // save f3
+
+ RET