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
|
// Copyright 2015 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.
// Note: some of these functions are semantically inlined
// by the compiler (in src/cmd/compile/internal/gc/ssa.go).
#include "textflag.h"
// bool Cas(int32 *val, int32 old, int32 new)
// Atomically:
// if(*val == old){
// *val = new;
// return 1;
// } else
// return 0;
TEXT runtime∕internal∕atomic·Cas(SB),NOSPLIT,$0-17
MOVQ ptr+0(FP), BX
MOVL old+8(FP), AX
MOVL new+12(FP), CX
LOCK
CMPXCHGL CX, 0(BX)
SETEQ ret+16(FP)
RET
// bool runtime∕internal∕atomic·Cas64(uint64 *val, uint64 old, uint64 new)
// Atomically:
// if(*val == *old){
// *val = new;
// return 1;
// } else {
// return 0;
// }
TEXT runtime∕internal∕atomic·Cas64(SB), NOSPLIT, $0-25
MOVQ ptr+0(FP), BX
MOVQ old+8(FP), AX
MOVQ new+16(FP), CX
LOCK
CMPXCHGQ CX, 0(BX)
SETEQ ret+24(FP)
RET
TEXT runtime∕internal∕atomic·Casuintptr(SB), NOSPLIT, $0-25
JMP runtime∕internal∕atomic·Cas64(SB)
TEXT runtime∕internal∕atomic·CasRel(SB), NOSPLIT, $0-17
JMP runtime∕internal∕atomic·Cas(SB)
TEXT runtime∕internal∕atomic·Loaduintptr(SB), NOSPLIT, $0-16
JMP runtime∕internal∕atomic·Load64(SB)
TEXT runtime∕internal∕atomic·Loaduint(SB), NOSPLIT, $0-16
JMP runtime∕internal∕atomic·Load64(SB)
TEXT runtime∕internal∕atomic·Storeuintptr(SB), NOSPLIT, $0-16
JMP runtime∕internal∕atomic·Store64(SB)
TEXT runtime∕internal∕atomic·Loadint64(SB), NOSPLIT, $0-16
JMP runtime∕internal∕atomic·Load64(SB)
TEXT runtime∕internal∕atomic·Xaddint64(SB), NOSPLIT, $0-24
JMP runtime∕internal∕atomic·Xadd64(SB)
// bool Casp1(void **val, void *old, void *new)
// Atomically:
// if(*val == old){
// *val = new;
// return 1;
// } else
// return 0;
TEXT runtime∕internal∕atomic·Casp1(SB), NOSPLIT, $0-25
MOVQ ptr+0(FP), BX
MOVQ old+8(FP), AX
MOVQ new+16(FP), CX
LOCK
CMPXCHGQ CX, 0(BX)
SETEQ ret+24(FP)
RET
// uint32 Xadd(uint32 volatile *val, int32 delta)
// Atomically:
// *val += delta;
// return *val;
TEXT runtime∕internal∕atomic·Xadd(SB), NOSPLIT, $0-20
MOVQ ptr+0(FP), BX
MOVL delta+8(FP), AX
MOVL AX, CX
LOCK
XADDL AX, 0(BX)
ADDL CX, AX
MOVL AX, ret+16(FP)
RET
TEXT runtime∕internal∕atomic·Xadd64(SB), NOSPLIT, $0-24
MOVQ ptr+0(FP), BX
MOVQ delta+8(FP), AX
MOVQ AX, CX
LOCK
XADDQ AX, 0(BX)
ADDQ CX, AX
MOVQ AX, ret+16(FP)
RET
TEXT runtime∕internal∕atomic·Xadduintptr(SB), NOSPLIT, $0-24
JMP runtime∕internal∕atomic·Xadd64(SB)
TEXT runtime∕internal∕atomic·Xchg(SB), NOSPLIT, $0-20
MOVQ ptr+0(FP), BX
MOVL new+8(FP), AX
XCHGL AX, 0(BX)
MOVL AX, ret+16(FP)
RET
TEXT runtime∕internal∕atomic·Xchg64(SB), NOSPLIT, $0-24
MOVQ ptr+0(FP), BX
MOVQ new+8(FP), AX
XCHGQ AX, 0(BX)
MOVQ AX, ret+16(FP)
RET
TEXT runtime∕internal∕atomic·Xchguintptr(SB), NOSPLIT, $0-24
JMP runtime∕internal∕atomic·Xchg64(SB)
TEXT runtime∕internal∕atomic·StorepNoWB(SB), NOSPLIT, $0-16
MOVQ ptr+0(FP), BX
MOVQ val+8(FP), AX
XCHGQ AX, 0(BX)
RET
TEXT runtime∕internal∕atomic·Store(SB), NOSPLIT, $0-12
MOVQ ptr+0(FP), BX
MOVL val+8(FP), AX
XCHGL AX, 0(BX)
RET
TEXT runtime∕internal∕atomic·StoreRel(SB), NOSPLIT, $0-12
JMP runtime∕internal∕atomic·Store(SB)
TEXT runtime∕internal∕atomic·Store8(SB), NOSPLIT, $0-9
MOVQ ptr+0(FP), BX
MOVB val+8(FP), AX
XCHGB AX, 0(BX)
RET
TEXT runtime∕internal∕atomic·Store64(SB), NOSPLIT, $0-16
MOVQ ptr+0(FP), BX
MOVQ val+8(FP), AX
XCHGQ AX, 0(BX)
RET
// void runtime∕internal∕atomic·Or8(byte volatile*, byte);
TEXT runtime∕internal∕atomic·Or8(SB), NOSPLIT, $0-9
MOVQ ptr+0(FP), AX
MOVB val+8(FP), BX
LOCK
ORB BX, (AX)
RET
// void runtime∕internal∕atomic·And8(byte volatile*, byte);
TEXT runtime∕internal∕atomic·And8(SB), NOSPLIT, $0-9
MOVQ ptr+0(FP), AX
MOVB val+8(FP), BX
LOCK
ANDB BX, (AX)
RET
|
