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| author | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 11:54:00 -0700 |
|---|---|---|
| committer | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 11:54:00 -0700 |
| commit | f154da9e12608589e8d5f0508f908a0c3e88a1bb (patch) | |
| tree | f8255d51e10c6f1e0ed69702200b966c9556a431 /src/syscall/asm_darwin_386.s | |
| parent | 8d8329ed5dfb9622c82a9fbec6fd99a580f9c9f6 (diff) | |
| download | golang-f154da9e12608589e8d5f0508f908a0c3e88a1bb.tar.gz | |
Imported Upstream version 1.4upstream/1.4
Diffstat (limited to 'src/syscall/asm_darwin_386.s')
| -rw-r--r-- | src/syscall/asm_darwin_386.s | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/syscall/asm_darwin_386.s b/src/syscall/asm_darwin_386.s new file mode 100644 index 000000000..7205deb12 --- /dev/null +++ b/src/syscall/asm_darwin_386.s @@ -0,0 +1,143 @@ +// 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" +#include "funcdata.h" + +// +// System call support for 386, Darwin +// + +// func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32); +// func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32); +// Trap # in AX, args on stack above caller pc. + +TEXT ·Syscall(SB),NOSPLIT,$0-28 + CALL runtime·entersyscall(SB) + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok + MOVL $-1, 20(SP) // r1 + MOVL $-1, 24(SP) // r2 + MOVL AX, 28(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok: + MOVL AX, 20(SP) // r1 + MOVL DX, 24(SP) // r2 + MOVL $0, 28(SP) // errno + CALL runtime·exitsyscall(SB) + RET + +TEXT ·Syscall6(SB),NOSPLIT,$0-40 + CALL runtime·entersyscall(SB) + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok6 + MOVL $-1, 32(SP) // r1 + MOVL $-1, 36(SP) // r2 + MOVL AX, 40(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok6: + MOVL AX, 32(SP) // r1 + MOVL DX, 36(SP) // r2 + MOVL $0, 40(SP) // errno + CALL runtime·exitsyscall(SB) + RET + +TEXT ·Syscall9(SB),NOSPLIT,$0-52 + CALL runtime·entersyscall(SB) + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok9 + MOVL $-1, 44(SP) // r1 + MOVL $-1, 48(SP) // r2 + MOVL AX, 52(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok9: + MOVL AX, 44(SP) // r1 + MOVL DX, 48(SP) // r2 + MOVL $0, 52(SP) // errno + CALL runtime·exitsyscall(SB) + RET + +TEXT ·RawSyscall(SB),NOSPLIT,$0-28 + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok1 + MOVL $-1, 20(SP) // r1 + MOVL $-1, 24(SP) // r2 + MOVL AX, 28(SP) // errno + RET +ok1: + MOVL AX, 20(SP) // r1 + MOVL DX, 24(SP) // r2 + MOVL $0, 28(SP) // errno + RET + +TEXT ·RawSyscall6(SB),NOSPLIT,$0-40 + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok2 + MOVL $-1, 32(SP) // r1 + MOVL $-1, 36(SP) // r2 + MOVL AX, 40(SP) // errno + RET +ok2: + MOVL AX, 32(SP) // r1 + MOVL DX, 36(SP) // r2 + MOVL $0, 40(SP) // errno + RET |