Text file
src/syscall/asm_darwin_amd64.s
1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 #include "textflag.h"
6 #include "funcdata.h"
7
8 //
9 // System call support for AMD64, Darwin
10 //
11
12 // Trap # in AX, args in DI SI DX, return in AX DX
13
14 // func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno);
15 TEXT ·Syscall(SB),NOSPLIT,$0-56
16 CALL runtime·entersyscall(SB)
17 MOVQ a1+8(FP), DI
18 MOVQ a2+16(FP), SI
19 MOVQ a3+24(FP), DX
20 MOVQ trap+0(FP), AX // syscall entry
21 ADDQ $0x2000000, AX
22 SYSCALL
23 JCC ok
24 MOVQ $-1, r1+32(FP)
25 MOVQ $0, r2+40(FP)
26 MOVQ AX, err+48(FP)
27 CALL runtime·exitsyscall(SB)
28 RET
29 ok:
30 MOVQ AX, r1+32(FP)
31 MOVQ DX, r2+40(FP)
32 MOVQ $0, err+48(FP)
33 CALL runtime·exitsyscall(SB)
34 RET
35
36 // func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno);
37 TEXT ·Syscall6(SB),NOSPLIT,$0-80
38 CALL runtime·entersyscall(SB)
39 MOVQ a1+8(FP), DI
40 MOVQ a2+16(FP), SI
41 MOVQ a3+24(FP), DX
42 MOVQ a4+32(FP), R10
43 MOVQ a5+40(FP), R8
44 MOVQ a6+48(FP), R9
45 MOVQ trap+0(FP), AX // syscall entry
46 ADDQ $0x2000000, AX
47 SYSCALL
48 JCC ok6
49 MOVQ $-1, r1+56(FP)
50 MOVQ $0, r2+64(FP)
51 MOVQ AX, err+72(FP)
52 CALL runtime·exitsyscall(SB)
53 RET
54 ok6:
55 MOVQ AX, r1+56(FP)
56 MOVQ DX, r2+64(FP)
57 MOVQ $0, err+72(FP)
58 CALL runtime·exitsyscall(SB)
59 RET
60
61 // func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno)
62 TEXT ·Syscall9(SB),NOSPLIT,$0-104
63 CALL runtime·entersyscall(SB)
64 MOVQ trap+0(FP), AX // syscall entry
65 MOVQ a1+8(FP), DI
66 MOVQ a2+16(FP), SI
67 MOVQ a3+24(FP), DX
68 MOVQ a4+32(FP), R10
69 MOVQ a5+40(FP), R8
70 MOVQ a6+48(FP), R9
71 MOVQ a7+56(FP), R11
72 MOVQ a8+64(FP), R12
73 MOVQ a9+72(FP), R13
74 SUBQ $32, SP
75 MOVQ R11, 8(SP)
76 MOVQ R12, 16(SP)
77 MOVQ R13, 24(SP)
78 ADDQ $0x2000000, AX
79 SYSCALL
80 JCC ok9
81 ADDQ $32, SP
82 MOVQ $-1, r1+80(FP)
83 MOVQ $0, r2+88(FP)
84 MOVQ AX, err+96(FP)
85 CALL runtime·exitsyscall(SB)
86 RET
87 ok9:
88 ADDQ $32, SP
89 MOVQ AX, r1+80(FP)
90 MOVQ DX, r2+88(FP)
91 MOVQ $0, err+96(FP)
92 CALL runtime·exitsyscall(SB)
93 RET
94
95 // func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
96 TEXT ·RawSyscall(SB),NOSPLIT,$0-56
97 MOVQ a1+8(FP), DI
98 MOVQ a2+16(FP), SI
99 MOVQ a3+24(FP), DX
100 MOVQ trap+0(FP), AX // syscall entry
101 ADDQ $0x2000000, AX
102 SYSCALL
103 JCC ok1
104 MOVQ $-1, r1+32(FP)
105 MOVQ $0, r2+40(FP)
106 MOVQ AX, err+48(FP)
107 RET
108 ok1:
109 MOVQ AX, r1+32(FP)
110 MOVQ DX, r2+40(FP)
111 MOVQ $0, err+48(FP)
112 RET
113
114 // func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
115 TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
116 MOVQ a1+8(FP), DI
117 MOVQ a2+16(FP), SI
118 MOVQ a3+24(FP), DX
119 MOVQ a4+32(FP), R10
120 MOVQ a5+40(FP), R8
121 MOVQ a6+48(FP), R9
122 MOVQ trap+0(FP), AX // syscall entry
123 ADDQ $0x2000000, AX
124 SYSCALL
125 JCC ok2
126 MOVQ $-1, r1+56(FP)
127 MOVQ $0, r2+64(FP)
128 MOVQ AX, err+72(FP)
129 RET
130 ok2:
131 MOVQ AX, r1+56(FP)
132 MOVQ DX, r2+64(FP)
133 MOVQ $0, err+72(FP)
134 RET
135
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