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asm_darwin_amd64.s
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// 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.
#include "textflag.h"
#include "funcdata.h"
//
// System call support for AMD64, Darwin
//
// Trap # in AX, args in DI SI DX, return in AX DX
// func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno);
TEXT ·Syscall(SB),NOSPLIT,$0-56
CALL runtime·entersyscall<ABIInternal>(SB)
MOVQ a1+8(FP), DI
MOVQ a2+16(FP), SI
MOVQ a3+24(FP), DX
MOVQ trap+0(FP), AX // syscall entry
ADDQ $0x2000000, AX
SYSCALL
JCC ok
MOVQ $-1, r1+32(FP)
MOVQ $0, r2+40(FP)
MOVQ AX, err+48(FP)
CALL runtime·exitsyscall<ABIInternal>(SB)
RET
ok:
MOVQ AX, r1+32(FP)
MOVQ DX, r2+40(FP)
MOVQ $0, err+48(FP)
CALL runtime·exitsyscall<ABIInternal>(SB)
RET
// func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno);
TEXT ·Syscall6(SB),NOSPLIT,$0-80
CALL runtime·entersyscall<ABIInternal>(SB)
MOVQ a1+8(FP), DI
MOVQ a2+16(FP), SI
MOVQ a3+24(FP), DX
MOVQ a4+32(FP), R10
MOVQ a5+40(FP), R8
MOVQ a6+48(FP), R9
MOVQ trap+0(FP), AX // syscall entry
ADDQ $0x2000000, AX
SYSCALL
JCC ok6
MOVQ $-1, r1+56(FP)
MOVQ $0, r2+64(FP)
MOVQ AX, err+72(FP)
CALL runtime·exitsyscall<ABIInternal>(SB)
RET
ok6:
MOVQ AX, r1+56(FP)
MOVQ DX, r2+64(FP)
MOVQ $0, err+72(FP)
CALL runtime·exitsyscall<ABIInternal>(SB)
RET
// func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno)
TEXT ·Syscall9(SB),NOSPLIT,$0-104
CALL runtime·entersyscall<ABIInternal>(SB)
MOVQ trap+0(FP), AX // syscall entry
MOVQ a1+8(FP), DI
MOVQ a2+16(FP), SI
MOVQ a3+24(FP), DX
MOVQ a4+32(FP), R10
MOVQ a5+40(FP), R8
MOVQ a6+48(FP), R9
MOVQ a7+56(FP), R11
MOVQ a8+64(FP), R12
MOVQ a9+72(FP), R13
SUBQ $32, SP
MOVQ R11, 8(SP)
MOVQ R12, 16(SP)
MOVQ R13, 24(SP)
ADDQ $0x2000000, AX
SYSCALL
JCC ok9
ADDQ $32, SP
MOVQ $-1, r1+80(FP)
MOVQ $0, r2+88(FP)
MOVQ AX, err+96(FP)
CALL runtime·exitsyscall<ABIInternal>(SB)
RET
ok9:
ADDQ $32, SP
MOVQ AX, r1+80(FP)
MOVQ DX, r2+88(FP)
MOVQ $0, err+96(FP)
CALL runtime·exitsyscall<ABIInternal>(SB)
RET
// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
MOVQ a1+8(FP), DI
MOVQ a2+16(FP), SI
MOVQ a3+24(FP), DX
MOVQ trap+0(FP), AX // syscall entry
ADDQ $0x2000000, AX
SYSCALL
JCC ok1
MOVQ $-1, r1+32(FP)
MOVQ $0, r2+40(FP)
MOVQ AX, err+48(FP)
RET
ok1:
MOVQ AX, r1+32(FP)
MOVQ DX, r2+40(FP)
MOVQ $0, err+48(FP)
RET
// func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
MOVQ a1+8(FP), DI
MOVQ a2+16(FP), SI
MOVQ a3+24(FP), DX
MOVQ a4+32(FP), R10
MOVQ a5+40(FP), R8
MOVQ a6+48(FP), R9
MOVQ trap+0(FP), AX // syscall entry
ADDQ $0x2000000, AX
SYSCALL
JCC ok2
MOVQ $-1, r1+56(FP)
MOVQ $0, r2+64(FP)
MOVQ AX, err+72(FP)
RET
ok2:
MOVQ AX, r1+56(FP)
MOVQ DX, r2+64(FP)
MOVQ $0, err+72(FP)
RET