File size: 3,001 Bytes
04dc9f2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | // 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 路Syscall(SB),NOSPLIT,$0-56
CALL runtime路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路exitsyscall<ABIInternal>(SB)
RET
ok:
MOVQ AX, r1+32(FP)
MOVQ DX, r2+40(FP)
MOVQ $0, err+48(FP)
CALL runtime路exitsyscall<ABIInternal>(SB)
RET
// func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno);
TEXT 路Syscall6(SB),NOSPLIT,$0-80
CALL runtime路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路exitsyscall<ABIInternal>(SB)
RET
ok6:
MOVQ AX, r1+56(FP)
MOVQ DX, r2+64(FP)
MOVQ $0, err+72(FP)
CALL runtime路exitsyscall<ABIInternal>(SB)
RET
// func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno)
TEXT 路Syscall9(SB),NOSPLIT,$0-104
CALL runtime路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路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路exitsyscall<ABIInternal>(SB)
RET
// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
TEXT 路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 路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
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