diff options
Diffstat (limited to 'src/backend/port/tas/sunstudio_x86.s')
| -rw-r--r-- | src/backend/port/tas/sunstudio_x86.s | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/backend/port/tas/sunstudio_x86.s b/src/backend/port/tas/sunstudio_x86.s new file mode 100644 index 0000000..808b207 --- /dev/null +++ b/src/backend/port/tas/sunstudio_x86.s @@ -0,0 +1,43 @@ +/------------------------------------------------------------------------- +/ +/ sunstudio_x86.s +/ compare and swap for Sun Studio on x86 +/ +/ Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group +/ Portions Copyright (c) 1994, Regents of the University of California +/ +/ IDENTIFICATION +/ src/backend/port/tas/sunstudio_x86.s +/ +/------------------------------------------------------------------------- + +/ 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 |