#error genesis/config.h (or sbcl.h) must be included before this file
#endif
+#include "interr.h" /* for declaration of lose() */
+
#define ARCH_HAS_STACK_POINTER
/* FIXME: Do we also want
#include "interr.h"
static inline void
-get_spinlock(volatile lispobj *word,long value)
+get_spinlock(volatile lispobj *word, unsigned long value)
{
#ifdef LISP_FEATURE_SB_THREAD
u32 eax=0;
if(*word==value)
lose("recursive get_spinlock: 0x%x,%ld\n",word,value);
do {
- asm ("xor %0,%0\n\
+#if defined(LISP_FEATURE_DARWIN)
+ asm volatile ("xor %0,%0;\n\
+ lock/cmpxchg %1,%2"
+ : "=a" (eax)
+ : "r" (value), "m" (*word)
+ : "memory", "cc");
+#else
+ asm volatile ("xor %0,%0\n\
lock cmpxchg %1,%2"
: "=a" (eax)
: "r" (value), "m" (*word)
: "memory", "cc");
+#endif
+
} while(eax!=0);
#else
*word=value;
#endif
}
-static inline void
-release_spinlock(volatile lispobj *word)
-{
- *word=0;
-}
-
#include <stdio.h>
static inline lispobj
swap_lispobjs(volatile lispobj *dest, lispobj value)
{
lispobj old_value;
- asm ("lock xchg %0,(%1)"
+#if defined(LISP_FEATURE_DARWIN)
+ asm volatile ("lock/xchg %0,(%1)"
+ : "=r" (old_value)
+ : "r" (dest), "0" (value)
+ : "memory");
+#else
+ asm volatile ("lock xchg %0,(%1)"
: "=r" (old_value)
: "r" (dest), "0" (value)
: "memory");
+#endif
return old_value;
}
+static inline void
+release_spinlock(volatile lispobj *word)
+{
+ /* A memory barrier is needed, use swap_lispobjs. See comment in
+ * RELEASE-SPINLOCK in target-thread.lisp. */
+ swap_lispobjs(word,0);
+}
+
extern void fast_bzero_detect(void *, size_t);
extern void (*fast_bzero_pointer)(void *, size_t);