nsprpub/pr/src/md/unix/os_Irix.s@4ab42b5ab56c
nsprpub/pr/src/md/unix/os_Irix.s
Wed, 31 Dec 2014 07:53:36 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 07:53:36 +0100
- branch
- TOR_BUG_3246
- changeset 5
- 4ab42b5ab56c
- permissions
- -rw-r--r--
Correct small whitespace inconsistency, lost while renaming variables.
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 /*
7 * Atomically add a new element to the top of the stack
8 *
9 * usage : PR_StackPush(listp, elementp);
10 * -----------------------
11 */
13 #include "md/_irix.h"
14 #ifdef _PR_HAVE_ATOMIC_CAS
16 #include <sys/asm.h>
17 #include <sys/regdef.h>
19 LEAF(PR_StackPush)
21 retry_push:
22 .set noreorder
23 lw v0,0(a0)
24 li t1,1
25 beq v0,t1,retry_push
26 move t0,a1
28 ll v0,0(a0)
29 beq v0,t1,retry_push
30 nop
31 sc t1,0(a0)
32 beq t1,0,retry_push
33 nop
34 sw v0,0(a1)
35 sync
36 sw t0,0(a0)
37 nop
38 nop
39 nop
40 nop
41 nop
42 nop
43 nop
44 nop
45 nop
46 nop
47 nop
48 nop
49 nop
50 nop
51 nop
52 nop
53 nop
54 nop
55 nop
56 nop
57 nop
58 nop
59 nop
60 nop
61 nop
62 nop
63 nop
64 nop
65 jr ra
66 nop
68 END(PR_StackPush)
70 /*
71 *
72 * Atomically remove the element at the top of the stack
73 *
74 * usage : elemep = PR_StackPop(listp);
75 *
76 */
78 LEAF(PR_StackPop)
79 retry_pop:
80 .set noreorder
83 lw v0,0(a0)
84 li t1,1
85 beq v0,0,done
86 nop
87 beq v0,t1,retry_pop
88 nop
90 ll v0,0(a0)
91 beq v0,0,done
92 nop
93 beq v0,t1,retry_pop
94 nop
95 sc t1,0(a0)
96 beq t1,0,retry_pop
97 nop
98 lw t0,0(v0)
99 sw t0,0(a0)
100 done:
101 nop
102 nop
103 nop
104 nop
105 nop
106 nop
107 nop
108 nop
109 nop
110 nop
111 nop
112 nop
113 nop
114 nop
115 nop
116 nop
117 nop
118 nop
119 nop
120 nop
121 nop
122 nop
123 nop
124 nop
125 nop
126 nop
127 nop
128 nop
129 jr ra
130 nop
132 END(PR_StackPop)
134 #endif /* _PR_HAVE_ATOMIC_CAS */
