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0.8alpha.0.32:
[sbcl.git]
/
src
/
runtime
/
x86-arch.c
diff --git
a/src/runtime/x86-arch.c
b/src/runtime/x86-arch.c
index
9b51cc0
..
e080615
100644
(file)
--- a/
src/runtime/x86-arch.c
+++ b/
src/runtime/x86-arch.c
@@
-141,6
+141,18
@@
arch_install_breakpoint(void *pc)
return result;
}
return result;
}
+void
+get_spinlock(lispobj *word,int value)
+{
+ u32 eax=0;
+ do {
+ asm ("xor %0,%0;lock cmpxchg %1,%2"
+ : "=a" (eax)
+ : "r" (value), "m" (*word)
+ : "memory", "cc");
+ } while(eax!=0);
+}
+
void
arch_remove_breakpoint(void *pc, unsigned long orig_inst)
{
void
arch_remove_breakpoint(void *pc, unsigned long orig_inst)
{