mirror of https://go.googlesource.com/go
97 lines
2.2 KiB
ArmAsm
97 lines
2.2 KiB
ArmAsm
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build dragonfly || freebsd || netbsd
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#include "textflag.h"
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#include "funcdata.h"
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//
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// System call support for AMD64 unixes
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//
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// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64)
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// func Syscall6(trap int64, a1, a2, a3, a4, a5, a6 int64) (r1, r2, err int64)
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// Trap # in AX, args in DI SI DX, return in AX DX
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TEXT ·Syscall(SB),NOSPLIT,$0-56
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CALL runtime·entersyscall<ABIInternal>(SB)
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MOVQ trap+0(FP), AX // syscall entry
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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SYSCALL
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JCC ok
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MOVQ $-1, r1+32(FP) // r1
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MOVQ $0, r2+40(FP) // r2
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MOVQ AX, err+48(FP) // errno
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CALL runtime·exitsyscall<ABIInternal>(SB)
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RET
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ok:
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MOVQ AX, r1+32(FP) // r1
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MOVQ DX, r2+40(FP) // r2
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MOVQ $0, err+48(FP) // errno
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CALL runtime·exitsyscall<ABIInternal>(SB)
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RET
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TEXT ·Syscall6(SB),NOSPLIT,$0-80
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CALL runtime·entersyscall<ABIInternal>(SB)
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MOVQ trap+0(FP), AX // syscall entry
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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MOVQ a4+32(FP), R10
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MOVQ a5+40(FP), R8
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MOVQ a6+48(FP), R9
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SYSCALL
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JCC ok6
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MOVQ $-1, r1+56(FP) // r1
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MOVQ $0, r2+64(FP) // r2
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MOVQ AX, err+72(FP) // errno
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CALL runtime·exitsyscall<ABIInternal>(SB)
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RET
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ok6:
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MOVQ AX, r1+56(FP) // r1
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MOVQ DX, r2+64(FP) // r2
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MOVQ $0, err+72(FP) // errno
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CALL runtime·exitsyscall<ABIInternal>(SB)
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RET
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TEXT ·RawSyscall(SB),NOSPLIT,$0-56
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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MOVQ trap+0(FP), AX // syscall entry
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SYSCALL
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JCC ok1
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MOVQ $-1, r1+32(FP) // r1
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MOVQ $0, r2+40(FP) // r2
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MOVQ AX, err+48(FP) // errno
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RET
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ok1:
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MOVQ AX, r1+32(FP) // r1
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MOVQ DX, r2+40(FP) // r2
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MOVQ $0, err+48(FP) // errno
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RET
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TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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MOVQ a4+32(FP), R10
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MOVQ a5+40(FP), R8
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MOVQ a6+48(FP), R9
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MOVQ trap+0(FP), AX // syscall entry
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SYSCALL
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JCC ok2
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MOVQ $-1, r1+56(FP) // r1
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MOVQ $0, r2+64(FP) // r2
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MOVQ AX, err+72(FP) // errno
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RET
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ok2:
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MOVQ AX, r1+56(FP) // r1
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MOVQ DX, r2+64(FP) // r2
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MOVQ $0, err+72(FP) // errno
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RET
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