Fix cut-to-width in the presence of bad constants in dead code.

[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 4c5d1a7..b25b9d8 100644 (file)
--- a/src/runtime/x86-64-arch.h
+++ b/src/runtime/x86-64-arch.h
@@ -12,16 +12,18 @@
 #include "interr.h"                     /* for declaration of lose() */
 
 #define ARCH_HAS_STACK_POINTER
+#define ALIEN_STACK_GROWS_DOWNWARD
 
 /* FIXME: Do we also want
  *   #define ARCH_HAS_FLOAT_REGISTERS
  * here? (The answer wasn't obvious to me when merging the
  * architecture-abstracting patches for CSR's SPARC port. -- WHN 2002-02-15) */
 
-#include "interr.h"
+#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;
@@ -52,7 +54,10 @@ 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
@@ -67,4 +72,6 @@ swap_lispobjs(volatile lispobj *dest, lispobj value)
     return old_value;
 }
 
+extern void AMD64_SYSV_ABI fast_bzero(void *, size_t);
+
 #endif /* _X86_64_ARCH_H */