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https://github.com/golang/go
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b100216441
Fixes #10068. Change-Id: I1f12225ee16b0090b87403931c0bc0157f068309 Reviewed-on: https://go-review.googlesource.com/6555 Reviewed-by: Minux Ma <minux@golang.org>
141 lines
2.9 KiB
ArmAsm
141 lines
2.9 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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#include "textflag.h"
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#include "funcdata.h"
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//
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// System call support for AMD64, Darwin
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//
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// Trap # in AX, args in DI SI DX, return in AX DX
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// func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno);
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TEXT ·Syscall(SB),NOSPLIT,$0-56
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CALL runtime·entersyscall(SB)
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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 $0, R10
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MOVQ $0, R8
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MOVQ $0, R9
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MOVQ trap+0(FP), AX // syscall entry
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ADDQ $0x2000000, AX
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SYSCALL
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JCC ok
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MOVQ $-1, r1+32(FP)
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MOVQ $0, r2+40(FP)
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MOVQ AX, err+48(FP)
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CALL runtime·exitsyscall(SB)
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RET
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ok:
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MOVQ AX, r1+32(FP)
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MOVQ DX, r2+40(FP)
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MOVQ $0, err+48(FP)
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CALL runtime·exitsyscall(SB)
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RET
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// func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno);
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TEXT ·Syscall6(SB),NOSPLIT,$0-80
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CALL runtime·entersyscall(SB)
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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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ADDQ $0x2000000, AX
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SYSCALL
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JCC ok6
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MOVQ $-1, r1+56(FP)
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MOVQ $0, r2+64(FP)
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MOVQ AX, err+72(FP)
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CALL runtime·exitsyscall(SB)
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RET
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ok6:
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MOVQ AX, r1+56(FP)
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MOVQ DX, r2+64(FP)
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MOVQ $0, err+72(FP)
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CALL runtime·exitsyscall(SB)
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RET
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// func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno)
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TEXT ·Syscall9(SB),NOSPLIT,$0-104
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CALL runtime·entersyscall(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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MOVQ a7+56(FP), R11
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MOVQ a8+64(FP), R12
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MOVQ a9+72(FP), R13
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SUBQ $32, SP
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MOVQ R11, 8(SP)
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MOVQ R12, 16(SP)
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MOVQ R13, 24(SP)
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ADDQ $0x2000000, AX
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SYSCALL
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JCC ok9
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ADDQ $32, SP
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MOVQ $-1, r1+80(FP)
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MOVQ $0, r2+88(FP)
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MOVQ AX, err+96(FP)
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CALL runtime·exitsyscall(SB)
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RET
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ok9:
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ADDQ $32, SP
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MOVQ AX, r1+80(FP)
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MOVQ DX, r2+88(FP)
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MOVQ $0, err+96(FP)
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CALL runtime·exitsyscall(SB)
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RET
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// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
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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 $0, R10
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MOVQ $0, R8
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MOVQ $0, R9
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MOVQ trap+0(FP), AX // syscall entry
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ADDQ $0x2000000, AX
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SYSCALL
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JCC ok1
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MOVQ $-1, r1+32(FP)
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MOVQ $0, r2+40(FP)
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MOVQ AX, err+48(FP)
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RET
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ok1:
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MOVQ AX, r1+32(FP)
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MOVQ DX, r2+40(FP)
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MOVQ $0, err+48(FP)
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RET
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// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
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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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ADDQ $0x2000000, AX
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SYSCALL
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JCC ok2
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MOVQ $-1, r1+56(FP)
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MOVQ $0, r2+64(FP)
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MOVQ AX, err+72(FP)
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RET
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ok2:
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MOVQ AX, r1+56(FP)
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MOVQ DX, r2+64(FP)
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MOVQ $0, err+72(FP)
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RET
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