blob: db1dea7c2911c0b9536da8e6c2555961267ac516 (
plain)
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
|
/=======================================================================
/ solaris_i386.s -- compare and swap for solaris_i386
/=======================================================================
/ Fortunately the Sun compiler can process cpp conditionals with -P
/ '/' is the comment for x86, while '!' is the comment for Sparc
.file "tas.s"
#if defined(__amd64)
.code64
#endif
.globl pg_atomic_cas
.type pg_atomic_cas, @function
.section .text, "ax"
.align 16
pg_atomic_cas:
#if defined(__amd64)
movl %edx,%eax
lock
cmpxchgl %esi,(%rdi)
#else
movl 4(%esp), %edx
movl 8(%esp), %ecx
movl 12(%esp), %eax
lock
cmpxchgl %ecx, (%edx)
#endif
ret
.size pg_atomic_cas, . - pg_atomic_cas
|
