Micro-optimize gc scavenge.

[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 81ac4b7..b25b9d8 100644 (file)
--- a/src/runtime/x86-64-arch.h
+++ b/src/runtime/x86-64-arch.h
@@ -12,6 +12,7 @@
 #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
@@ -71,4 +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 */