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Diffstat (limited to 'src/syscall/asm_darwin_amd64.s')
| -rw-r--r-- | src/syscall/asm_darwin_amd64.s | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/syscall/asm_darwin_amd64.s b/src/syscall/asm_darwin_amd64.s new file mode 100644 index 000000000..d6f1c96f5 --- /dev/null +++ b/src/syscall/asm_darwin_amd64.s @@ -0,0 +1,106 @@ +// 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. + +// TODO(rsc): Rewrite all nn(SP) references into name+(nn-8)(FP) +// so that go vet can check that they are correct. + +#include "textflag.h" + +// +// System call support for AMD64, Darwin +// + +// 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(SB) + MOVQ 16(SP), DI + MOVQ 24(SP), SI + MOVQ 32(SP), DX + MOVQ $0, R10 + MOVQ $0, R8 + MOVQ $0, R9 + MOVQ 8(SP), AX // syscall entry + ADDQ $0x2000000, AX + SYSCALL + JCC ok + MOVQ $-1, 40(SP) // r1 + MOVQ $0, 48(SP) // r2 + MOVQ AX, 56(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok: + MOVQ AX, 40(SP) // r1 + MOVQ DX, 48(SP) // r2 + MOVQ $0, 56(SP) // errno + CALL runtime·exitsyscall(SB) + RET + +TEXT ·Syscall6(SB),NOSPLIT,$0-80 + CALL runtime·entersyscall(SB) + MOVQ 16(SP), DI + MOVQ 24(SP), SI + MOVQ 32(SP), DX + MOVQ 40(SP), R10 + MOVQ 48(SP), R8 + MOVQ 56(SP), R9 + MOVQ 8(SP), AX // syscall entry + ADDQ $0x2000000, AX + SYSCALL + JCC ok6 + MOVQ $-1, 64(SP) // r1 + MOVQ $0, 72(SP) // r2 + MOVQ AX, 80(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok6: + MOVQ AX, 64(SP) // r1 + MOVQ DX, 72(SP) // r2 + MOVQ $0, 80(SP) // errno + CALL runtime·exitsyscall(SB) + RET + +TEXT ·RawSyscall(SB),NOSPLIT,$0-56 + MOVQ 16(SP), DI + MOVQ 24(SP), SI + MOVQ 32(SP), DX + MOVQ $0, R10 + MOVQ $0, R8 + MOVQ $0, R9 + MOVQ 8(SP), AX // syscall entry + ADDQ $0x2000000, AX + SYSCALL + JCC ok1 + MOVQ $-1, 40(SP) // r1 + MOVQ $0, 48(SP) // r2 + MOVQ AX, 56(SP) // errno + RET +ok1: + MOVQ AX, 40(SP) // r1 + MOVQ DX, 48(SP) // r2 + MOVQ $0, 56(SP) // errno + RET + +TEXT ·RawSyscall6(SB),NOSPLIT,$0-80 + MOVQ 16(SP), DI + MOVQ 24(SP), SI + MOVQ 32(SP), DX + MOVQ 40(SP), R10 + MOVQ 48(SP), R8 + MOVQ 56(SP), R9 + MOVQ 8(SP), AX // syscall entry + ADDQ $0x2000000, AX + SYSCALL + JCC ok2 + MOVQ $-1, 64(SP) // r1 + MOVQ $0, 72(SP) // r2 + MOVQ AX, 80(SP) // errno + RET +ok2: + MOVQ AX, 64(SP) // r1 + MOVQ DX, 72(SP) // r2 + MOVQ $0, 80(SP) // errno + RET |