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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
// Copyright 2016 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"
//
// System calls for s390x, Linux
//
// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64)
TEXT ·Syscall(SB),NOSPLIT,$0-56
BL runtime·entersyscall(SB)
MOVD a1+8(FP), R2
MOVD a2+16(FP), R3
MOVD a3+24(FP), R4
MOVD $0, R5
MOVD $0, R6
MOVD $0, R7
MOVD trap+0(FP), R1 // syscall entry
SYSCALL
MOVD $0xfffffffffffff001, R8
CMPUBLT R2, R8, ok
MOVD $-1, r1+32(FP)
MOVD $0, r2+40(FP)
NEG R2, R2
MOVD R2, err+48(FP) // errno
BL runtime·exitsyscall(SB)
RET
ok:
MOVD R2, r1+32(FP)
MOVD R3, r2+40(FP)
MOVD $0, err+48(FP) // errno
BL runtime·exitsyscall(SB)
RET
// func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT ·Syscall6(SB),NOSPLIT,$0-80
BL runtime·entersyscall(SB)
MOVD a1+8(FP), R2
MOVD a2+16(FP), R3
MOVD a3+24(FP), R4
MOVD a4+32(FP), R5
MOVD a5+40(FP), R6
MOVD a6+48(FP), R7
MOVD trap+0(FP), R1 // syscall entry
SYSCALL
MOVD $0xfffffffffffff001, R8
CMPUBLT R2, R8, ok6
MOVD $-1, r1+56(FP)
MOVD $0, r2+64(FP)
NEG R2, R2
MOVD R2, err+72(FP) // errno
BL runtime·exitsyscall(SB)
RET
ok6:
MOVD R2, r1+56(FP)
MOVD R3, r2+64(FP)
MOVD $0, err+72(FP) // errno
BL runtime·exitsyscall(SB)
RET
// func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT ·RawSyscall(SB),NOSPLIT,$0-56
MOVD a1+8(FP), R2
MOVD a2+16(FP), R3
MOVD a3+24(FP), R4
MOVD $0, R5
MOVD $0, R6
MOVD $0, R7
MOVD trap+0(FP), R1 // syscall entry
SYSCALL
MOVD $0xfffffffffffff001, R8
CMPUBLT R2, R8, ok1
MOVD $-1, r1+32(FP)
MOVD $0, r2+40(FP)
NEG R2, R2
MOVD R2, err+48(FP) // errno
RET
ok1:
MOVD R2, r1+32(FP)
MOVD R3, r2+40(FP)
MOVD $0, err+48(FP) // errno
RET
// func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
MOVD a1+8(FP), R2
MOVD a2+16(FP), R3
MOVD a3+24(FP), R4
MOVD a4+32(FP), R5
MOVD a5+40(FP), R6
MOVD a6+48(FP), R7
MOVD trap+0(FP), R1 // syscall entry
SYSCALL
MOVD $0xfffffffffffff001, R8
CMPUBLT R2, R8, ok2
MOVD $-1, r1+56(FP)
MOVD $0, r2+64(FP)
NEG R2, R2
MOVD R2, err+72(FP) // errno
RET
ok2:
MOVD R2, r1+56(FP)
MOVD R3, r2+64(FP)
MOVD $0, err+72(FP) // errno
RET
// func rawVforkSyscall(trap, a1 uintptr) (r1, err uintptr)
TEXT ·rawVforkSyscall(SB),NOSPLIT|NOFRAME,$0-32
MOVD $0, R2
MOVD a1+8(FP), R3
MOVD $0, R4
MOVD $0, R5
MOVD $0, R6
MOVD $0, R7
MOVD trap+0(FP), R1 // syscall entry
SYSCALL
MOVD $0xfffffffffffff001, R8
CMPUBLT R2, R8, ok2
MOVD $-1, r1+16(FP)
NEG R2, R2
MOVD R2, err+24(FP) // errno
RET
ok2:
MOVD R2, r1+16(FP)
MOVD $0, err+24(FP) // errno
RET
// func rawSyscallNoError(trap, a1, a2, a3 uintptr) (r1, r2 uintptr)
TEXT ·rawSyscallNoError(SB),NOSPLIT,$0-48
MOVD a1+8(FP), R2
MOVD a2+16(FP), R3
MOVD a3+24(FP), R4
MOVD $0, R5
MOVD $0, R6
MOVD $0, R7
MOVD trap+0(FP), R1 // syscall entry
SYSCALL
MOVD R2, r1+32(FP)
MOVD R3, r2+40(FP)
RET
#define SYS_SOCKETCALL 102 /* from zsysnum_linux_s390x.go */
// func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err int)
// Kernel interface gets call sub-number and pointer to a0.
TEXT ·socketcall(SB),NOSPLIT,$0-72
BL runtime·entersyscall(SB)
MOVD $SYS_SOCKETCALL, R1 // syscall entry
MOVD call+0(FP), R2 // socket call number
MOVD $a0+8(FP), R3 // pointer to call arguments
MOVD $0, R4
MOVD $0, R5
MOVD $0, R6
MOVD $0, R7
SYSCALL
MOVD $0xfffffffffffff001, R8
CMPUBLT R2, R8, oksock
MOVD $-1, n+56(FP)
NEG R2, R2
MOVD R2, err+64(FP)
BL runtime·exitsyscall(SB)
RET
oksock:
MOVD R2, n+56(FP)
MOVD $0, err+64(FP)
CALL runtime·exitsyscall(SB)
RET
// func rawsocketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err int)
// Kernel interface gets call sub-number and pointer to a0.
TEXT ·rawsocketcall(SB),NOSPLIT,$0-72
MOVD $SYS_SOCKETCALL, R1 // syscall entry
MOVD call+0(FP), R2 // socket call number
MOVD $a0+8(FP), R3 // pointer to call arguments
MOVD $0, R4
MOVD $0, R5
MOVD $0, R6
MOVD $0, R7
SYSCALL
MOVD $0xfffffffffffff001, R8
CMPUBLT R2, R8, oksock1
MOVD $-1, n+56(FP)
NEG R2, R2
MOVD R2, err+64(FP)
RET
oksock1:
MOVD R2, n+56(FP)
MOVD $0, err+64(FP)
RET
|
