From 12af9cdff485fd2c76630ba85e8437e5ee51558c Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Fri, 30 Dec 2005 21:43:41 +0000
Subject: Add support for Solaris x86_64 using Sun's compiler.

Pierre Girard
---
 src/backend/port/tas/solaris_x86_64.s | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 src/backend/port/tas/solaris_x86_64.s

(limited to 'src/backend')

diff --git a/src/backend/port/tas/solaris_x86_64.s b/src/backend/port/tas/solaris_x86_64.s
new file mode 100644
index 00000000000..4fad43e5a2a
--- /dev/null
+++ b/src/backend/port/tas/solaris_x86_64.s
@@ -0,0 +1,35 @@
+/=============================================================================
+/ tas.s -- test and set lock for solaris_i386
+/ based on i386 ASM with modifications outlined in
+/ http://www.x86-64.org/documentation/assembly
+/=============================================================================
+
+        .file   "tas.s"
+        .text
+        .align  16
+.L1.text:
+
+        .globl  tas
+tas:
+        pushq   %rbp            /save prev base pointer
+        movq    %rsp,%rbp       /new base pointer
+        pushq   %rbx            /save prev bx
+        movq    8(%rbp),%rbx    /load bx with address of lock
+        movq    $255,%rax       /put something in ax
+        xchgb   %al,(%rbx)      /swap lock value with "0"
+        cmpb    $0,%al          /did we get the lock?
+        jne     .Locked
+        subq    %rax,%rax       /yes, we got it -- return 0
+        jmp     .Finish
+        .align  8
+.Locked:
+        movq    $1,%rax         /no, we didn't get it - return 1
+.Finish:
+        popq    %rbx            /restore prev bx
+        movq    %rbp,%rsp       /restore stack state
+        popq    %rbp
+        ret                     /return
+        .align  8
+        .type   tas,@function
+        .size   tas,.-tas
+
-- 
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