yggdrasil/gcc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

natObject.cc (X86 compare_and_swap): Use +m constraint.

Browse Source 
2002-01-25  Bryce McKinlay  <bryce@waitaki.otago.ac.nz>

	* java/lang/natObject.cc (X86 compare_and_swap): Use +m constraint.

From-SVN: r49198
This commit is contained in:
Bryce McKinlay
2002-01-25 02:53:37 +00:00
committed by Bryce McKinlay
parent 6b016bf436
commit 9fa5237cb7
2 changed files with 7 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libjava/java/lang/natObject.cc
+3 -2
View File
@@ -327,8 +327,9 @@ typedef size_t obj_addr_t; /* Integer type big enough for object */
{
char result;
__asm__ __volatile__("lock; cmpxchgl %2, %0; setz %1"
: "=m"(*(addr)), "=q"(result)
: "r" (new_val), "0"(*(addr)), "a"(old) : "memory");
: "+m"(*(addr)), "=q"(result)
: "r" (new_val), "a"(old)
: "memory");
return (bool) result;
}