diff options
author | Austin Clements <austin@google.com> | 2014-10-22 13:25:37 -0400 |
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committer | Austin Clements <austin@google.com> | 2014-10-22 13:25:37 -0400 |
commit | 800a826ae560191d4dbb6c529eea15cf4349a06f (patch) | |
tree | c4206bb02365c3b9c66e2946031b86f0ee527faf /src/syscall/asm_freebsd_amd64.s | |
parent | 2c586384223e980fd3303625ea6b02ed5d9fb9c0 (diff) | |
parent | 1678ee65674b332e900a703de296eb66fbadcf45 (diff) | |
download | go-800a826ae560191d4dbb6c529eea15cf4349a06f.tar.gz |
build: merge the great pkg/ rename into dev.power64
This also removes pkg/runtime/traceback_lr.c, which was ported
to Go in an earlier commit and then moved to
runtime/traceback.go.
Reviewer: rsc@golang.org
rsc: LGTM
Diffstat (limited to 'src/syscall/asm_freebsd_amd64.s')
-rw-r--r-- | src/syscall/asm_freebsd_amd64.s | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/src/syscall/asm_freebsd_amd64.s b/src/syscall/asm_freebsd_amd64.s new file mode 100644 index 000000000..58cbfe1a9 --- /dev/null +++ b/src/syscall/asm_freebsd_amd64.s @@ -0,0 +1,141 @@ +// 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, FreeBSD +// + +// The SYSCALL variant for invoking system calls is broken in FreeBSD. +// See comment at top of ../runtime/sys_freebsd_amd64.c and +// golang.org/issue/6372. +#define SYSCALL MOVQ R10, CX; INT $0x80 + +// 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); +// func Syscall9(trap int64, a1, a2, a3, a4, a5, a6, a7, a8, a9 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 + 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 + 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 ·Syscall9(SB),NOSPLIT,$0-104 + CALL runtime·entersyscall(SB) + MOVQ 8(SP), AX + MOVQ 16(SP), DI + MOVQ 24(SP), SI + MOVQ 32(SP), DX + MOVQ 40(SP), R10 + MOVQ 48(SP), R8 + MOVQ 56(SP), R9 + + // shift around the last three arguments so they're at the + // top of the stack when the syscall is called. + MOVQ 64(SP), R11 // arg 7 + MOVQ R11, 8(SP) + MOVQ 72(SP), R11 // arg 8 + MOVQ R11, 16(SP) + MOVQ 80(SP), R11 // arg 9 + MOVQ R11, 24(SP) + + SYSCALL + JCC ok9 + MOVQ $-1, 88(SP) // r1 + MOVQ $0, 96(SP) // r2 + MOVQ AX, 104(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok9: + MOVQ AX, 88(SP) // r1 + MOVQ DX, 96(SP) // r2 + MOVQ $0, 104(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 + 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 + 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 |