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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
| commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
| tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /src/syscall/asm_unix_amd64.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.20-upstream.tar.xz golang-1.20-upstream.zip | |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/syscall/asm_unix_amd64.s')
| -rw-r--r-- | src/syscall/asm_unix_amd64.s | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/syscall/asm_unix_amd64.s b/src/syscall/asm_unix_amd64.s new file mode 100644 index 0000000..6d8da71 --- /dev/null +++ b/src/syscall/asm_unix_amd64.s @@ -0,0 +1,96 @@ +// 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. + +//go:build dragonfly || freebsd || netbsd + +#include "textflag.h" +#include "funcdata.h" + +// +// System call support for AMD64 unixes +// + +// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64) +// func Syscall6(trap int64, a1, a2, a3, a4, a5, a6 int64) (r1, r2, err int64) +// Trap # in AX, args in DI SI DX, return in AX DX + +TEXT ·Syscall(SB),NOSPLIT,$0-56 + CALL runtime·entersyscall<ABIInternal>(SB) + MOVQ trap+0(FP), AX // syscall entry + MOVQ a1+8(FP), DI + MOVQ a2+16(FP), SI + MOVQ a3+24(FP), DX + SYSCALL + JCC ok + MOVQ $-1, r1+32(FP) // r1 + MOVQ $0, r2+40(FP) // r2 + MOVQ AX, err+48(FP) // errno + CALL runtime·exitsyscall<ABIInternal>(SB) + RET +ok: + MOVQ AX, r1+32(FP) // r1 + MOVQ DX, r2+40(FP) // r2 + MOVQ $0, err+48(FP) // errno + CALL runtime·exitsyscall<ABIInternal>(SB) + RET + +TEXT ·Syscall6(SB),NOSPLIT,$0-80 + CALL runtime·entersyscall<ABIInternal>(SB) + MOVQ trap+0(FP), AX // syscall entry + MOVQ a1+8(FP), DI + MOVQ a2+16(FP), SI + MOVQ a3+24(FP), DX + MOVQ a4+32(FP), R10 + MOVQ a5+40(FP), R8 + MOVQ a6+48(FP), R9 + SYSCALL + JCC ok6 + MOVQ $-1, r1+56(FP) // r1 + MOVQ $0, r2+64(FP) // r2 + MOVQ AX, err+72(FP) // errno + CALL runtime·exitsyscall<ABIInternal>(SB) + RET +ok6: + MOVQ AX, r1+56(FP) // r1 + MOVQ DX, r2+64(FP) // r2 + MOVQ $0, err+72(FP) // errno + CALL runtime·exitsyscall<ABIInternal>(SB) + RET + +TEXT ·RawSyscall(SB),NOSPLIT,$0-56 + MOVQ a1+8(FP), DI + MOVQ a2+16(FP), SI + MOVQ a3+24(FP), DX + MOVQ trap+0(FP), AX // syscall entry + SYSCALL + JCC ok1 + MOVQ $-1, r1+32(FP) // r1 + MOVQ $0, r2+40(FP) // r2 + MOVQ AX, err+48(FP) // errno + RET +ok1: + MOVQ AX, r1+32(FP) // r1 + MOVQ DX, r2+40(FP) // r2 + MOVQ $0, err+48(FP) // errno + RET + +TEXT ·RawSyscall6(SB),NOSPLIT,$0-80 + MOVQ a1+8(FP), DI + MOVQ a2+16(FP), SI + MOVQ a3+24(FP), DX + MOVQ a4+32(FP), R10 + MOVQ a5+40(FP), R8 + MOVQ a6+48(FP), R9 + MOVQ trap+0(FP), AX // syscall entry + SYSCALL + JCC ok2 + MOVQ $-1, r1+56(FP) // r1 + MOVQ $0, r2+64(FP) // r2 + MOVQ AX, err+72(FP) // errno + RET +ok2: + MOVQ AX, r1+56(FP) // r1 + MOVQ DX, r2+64(FP) // r2 + MOVQ $0, err+72(FP) // errno + RET |