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1.0.5.32: partial fix for DISASSEMBLE bug reported by Peter Graves
[sbcl.git]
/
src
/
runtime
/
x86-64-arch.h
diff --git
a/src/runtime/x86-64-arch.h
b/src/runtime/x86-64-arch.h
index
90b5150
..
baa5b8d
100644
(file)
--- a/
src/runtime/x86-64-arch.h
+++ b/
src/runtime/x86-64-arch.h
@@
-26,11
+26,19
@@
get_spinlock(volatile lispobj *word,long value)
if(*word==value)
lose("recursive get_spinlock: 0x%x,%ld\n",word,value);
do {
if(*word==value)
lose("recursive get_spinlock: 0x%x,%ld\n",word,value);
do {
+#if defined(LISP_FEATURE_DARWIN)
+ asm ("xor %0,%0\n\
+ lock/cmpxchg %1,%2"
+ : "=a" (rax)
+ : "r" (value), "m" (*word)
+ : "memory", "cc");
+#else
asm ("xor %0,%0\n\
lock cmpxchg %1,%2"
: "=a" (rax)
: "r" (value), "m" (*word)
: "memory", "cc");
asm ("xor %0,%0\n\
lock cmpxchg %1,%2"
: "=a" (rax)
: "r" (value), "m" (*word)
: "memory", "cc");
+#endif
} while(rax!=0);
#else
*word=value;
} while(rax!=0);
#else
*word=value;
@@
-43,4
+51,15
@@
release_spinlock(volatile lispobj *word)
*word=0;
}
*word=0;
}
+static inline lispobj
+swap_lispobjs(volatile lispobj *dest, lispobj value)
+{
+ lispobj old_value;
+ asm ("lock xchg %0,(%1)"
+ : "=r" (old_value)
+ : "r" (dest), "0" (value)
+ : "memory");
+ return old_value;
+}
+
#endif /* _X86_64_ARCH_H */
#endif /* _X86_64_ARCH_H */