1.0.24.25: add volatile after asm in spinlock and swap_lispobjs

[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 10df5d8..4c5d1a7 100644 (file)
--- a/src/runtime/x86-64-arch.h
+++ b/src/runtime/x86-64-arch.h
@@ -29,13 +29,15 @@ get_spinlock(volatile lispobj *word,long value)
         lose("recursive get_spinlock: 0x%x,%ld\n",word,value);
     do {
 #if defined(LISP_FEATURE_DARWIN)
-        asm ("xor %0,%0\n\
+        asm volatile
+            ("xor %0,%0\n\
               lock/cmpxchg %1,%2"
              : "=a" (rax)
              : "r" (value), "m" (*word)
              : "memory", "cc");
 #else
-        asm ("xor %0,%0\n\
+        asm volatile
+            ("xor %0,%0\n\
               lock cmpxchg %1,%2"
              : "=a" (rax)
              : "r" (value), "m" (*word)
@@ -57,7 +59,8 @@ static inline lispobj
 swap_lispobjs(volatile lispobj *dest, lispobj value)
 {
     lispobj old_value;
-    asm ("lock xchg %0,(%1)"
+    asm volatile
+        ("lock xchg %0,(%1)"
          : "=r" (old_value)
          : "r" (dest), "0" (value)
          : "memory");