diff options
Diffstat (limited to 'src/pkg/syscall/asm_linux_amd64.s')
| -rw-r--r-- | src/pkg/syscall/asm_linux_amd64.s | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/src/pkg/syscall/asm_linux_amd64.s b/src/pkg/syscall/asm_linux_amd64.s new file mode 100644 index 000000000..fdc233ca5 --- /dev/null +++ b/src/pkg/syscall/asm_linux_amd64.s @@ -0,0 +1,129 @@ +// 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. + +// +// System calls for AMD64, Linux +// + +// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64); +// Trap # in AX, args in DI SI DX R10 R8 R9, return in AX DX +// Note that this differs from "standard" ABI convention, which +// would pass 4th arg in CX, not R10. + +TEXT ·Syscall(SB),7,$0 + 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 + CMPQ AX, $0xfffffffffffff001 + JLS ok + MOVQ $-1, 40(SP) // r1 + MOVQ $0, 48(SP) // r2 + NEGQ AX + 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),7,$0 + 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 + CMPQ AX, $0xfffffffffffff001 + JLS ok6 + MOVQ $-1, 64(SP) // r1 + MOVQ $0, 72(SP) // r2 + NEGQ AX + 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),7,$0 + 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 + CMPQ AX, $0xfffffffffffff001 + JLS ok1 + MOVQ $-1, 40(SP) // r1 + MOVQ $0, 48(SP) // r2 + NEGQ AX + 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),7,$0 + 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 + CMPQ AX, $0xfffffffffffff001 + JLS ok2 + MOVQ $-1, 64(SP) // r1 + MOVQ $0, 72(SP) // r2 + NEGQ AX + MOVQ AX, 80(SP) // errno + RET +ok2: + MOVQ AX, 64(SP) // r1 + MOVQ DX, 72(SP) // r2 + MOVQ $0, 80(SP) // errno + RET + +TEXT ·Gettimeofday(SB),7,$0 + MOVQ 8(SP), DI + MOVQ $0, SI + MOVQ $0xffffffffff600000, AX + CALL AX + + CMPQ AX, $0xfffffffffffff001 + JLS ok7 + NEGQ AX + MOVQ AX, 16(SP) // errno + RET +ok7: + MOVQ $0, 16(SP) // errno + RET + +TEXT ·Time(SB),7,$0 + MOVQ 8(SP), DI + MOVQ $0xffffffffff600400, AX + CALL AX + MOVQ AX, 16(SP) // tt + MOVQ $0, 24(SP) // errno + RET |