* reserved for the system libraries? If so, it would be tidy to
* rename flags like _X86_ARCH_H so their names are in a part of the
* namespace that we control. */
-#ifndef _X86_ARCH_H
-#define _X86_ARCH_H
+#ifndef _X86_64_ARCH_H
+#define _X86_64_ARCH_H
+
+#ifndef SBCL_GENESIS_CONFIG
+#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
* here? (The answer wasn't obvious to me when merging the
* architecture-abstracting patches for CSR's SPARC port. -- WHN 2002-02-15) */
-static inline void
-get_spinlock(lispobj *word,long value)
+#define COMPILER_BARRIER \
+ do { __asm__ __volatile__ ( "" : : : "memory"); } while (0)
+
+static inline void
+get_spinlock(volatile lispobj *word, unsigned long value)
{
-#if 0
- u32 eax=0;
+#ifdef LISP_FEATURE_SB_THREAD
+ u64 rax=0;
+ if(*word==value)
+ lose("recursive get_spinlock: 0x%x,%ld\n",word,value);
do {
- asm ("xor %0,%0\n\
- lock cmpxchg %1,%2"
- : "=a" (eax)
- : "r" (value), "m" (*word)
- : "memory", "cc");
- } while(eax!=0);
+#if defined(LISP_FEATURE_DARWIN)
+ asm volatile
+ ("xor %0,%0\n\
+ lock/cmpxchg %1,%2"
+ : "=a" (rax)
+ : "r" (value), "m" (*word)
+ : "memory", "cc");
+#else
+ asm volatile
+ ("xor %0,%0\n\
+ lock cmpxchg %1,%2"
+ : "=a" (rax)
+ : "r" (value), "m" (*word)
+ : "memory", "cc");
+#endif
+ } while(rax!=0);
#else
*word=value;
#endif
}
static inline void
-release_spinlock(lispobj *word)
+release_spinlock(volatile lispobj *word)
{
+ /* See comment in RELEASE-SPINLOCK in target-thread.lisp. */
+ COMPILER_BARRIER;
*word=0;
+ COMPILER_BARRIER;
}
-#endif /* _X86_ARCH_H */
+static inline lispobj
+swap_lispobjs(volatile lispobj *dest, lispobj value)
+{
+ lispobj old_value;
+ asm volatile
+ ("lock xchg %0,(%1)"
+ : "=r" (old_value)
+ : "r" (dest), "0" (value)
+ : "memory");
+ return old_value;
+}
+
+extern void AMD64_SYSV_ABI fast_bzero(void *, size_t);
+
+#endif /* _X86_64_ARCH_H */