X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fx86-64-arch.h;h=fe764f64288445d27f521f4b6d9ed1ccfafa8a19;hb=c8617f57d0413beb2890e94dabe227cef9c5ddad;hp=4cb9d4cdcf7dfcc72e63f6d249c7b947731c3cbd;hpb=79cc569a97e444389350ea3f5b1017374fe16bec;p=sbcl.git

diff --git a/src/runtime/x86-64-arch.h b/src/runtime/x86-64-arch.h
index 4cb9d4c..fe764f6 100644
--- a/src/runtime/x86-64-arch.h
+++ b/src/runtime/x86-64-arch.h
@@ -9,6 +9,8 @@
 #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
@@ -16,21 +18,32 @@
  * here? (The answer wasn't obvious to me when merging the
  * architecture-abstracting patches for CSR's SPARC port. -- WHN 2002-02-15) */
 
-extern never_returns lose(char *fmt, ...);
+#define COMPILER_BARRIER \
+    do { __asm__ __volatile__ ( "" : : : "memory"); } while (0)
 
 static inline void
-get_spinlock(volatile lispobj *word,long value)
+get_spinlock(volatile lispobj *word, unsigned long value)
 {
 #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\
+#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;
@@ -40,7 +53,24 @@ get_spinlock(volatile lispobj *word,long value)
 static inline void
 release_spinlock(volatile lispobj *word)
 {
+    /* See comment in RELEASE-SPINLOCK in target-thread.lisp. */
+    COMPILER_BARRIER;
     *word=0;
+    COMPILER_BARRIER;
 }
 
+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 */