X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fincludes%2FTailCalls.h;h=13eea0e48043f31c678c78475ebcd97bd2bb6859;hb=153b9cb9b11e05c4edb1b6bc0a7b972660e41f70;hp=2dbd99c490df46969bdd21b8e29d6b367e210fc3;hpb=19f8036efd024ccf19cdf8426853b21e0467d0c5;p=ghc-hetmet.git

diff --git a/ghc/includes/TailCalls.h b/ghc/includes/TailCalls.h
index 2dbd99c..13eea0e 100644
--- a/ghc/includes/TailCalls.h
+++ b/ghc/includes/TailCalls.h
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: TailCalls.h,v 1.9 2002/05/28 09:22:08 wolfgang Exp $
+ * $Id: TailCalls.h,v 1.18 2005/01/28 12:55:54 simonmar Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -16,7 +16,7 @@
 
 #ifdef USE_MINIINTERPRETER
 
-#define JMP_(cont) return(stgCast(StgFunPtr,cont))
+#define JMP_(cont) return((StgFunPtr)(cont))
 #define FB_
 #define FE_
 
@@ -28,7 +28,7 @@ extern void __DISCARD__(void);
    Tail calling on x86
    -------------------------------------------------------------------------- */
 
-#if i386_TARGET_ARCH
+#if i386_HOST_ARCH
 
 /* Note about discard: possibly there to fool GCC into clearing up
    before we do the jump eg. if there are some arguments left on the C
@@ -51,19 +51,34 @@ extern void __DISCARD__(void);
 
 #define JMP_(cont)			\
     { 					\
-      void *target;			\
+      void *__target;			\
       __DISCARD__();			\
-      target = (void *)(cont);    	\
-      goto *target; 	    	    	\
+      __target = (void *)(cont);    	\
+      goto *__target; 	    	    	\
+    }
+
+#endif /* i386_HOST_ARCH */
+
+/* -----------------------------------------------------------------------------
+   Tail calling on x86_64
+   -------------------------------------------------------------------------- */
+
+#if x86_64_HOST_ARCH
+
+#define JMP_(cont)			\
+    { 					\
+      void *__target;			\
+      __target = (void *)(cont);    	\
+      goto *__target; 	    	    	\
     }
 
-#endif /* i386_TARGET_ARCH */
+#endif /* x86_64_HOST_ARCH */
 
 /* -----------------------------------------------------------------------------
    Tail calling on Sparc
    -------------------------------------------------------------------------- */
 
-#ifdef sparc_TARGET_ARCH
+#ifdef sparc_HOST_ARCH
 
 #define JMP_(cont)	((F_) (cont))()
 	/* Oh so happily, the above turns into a "call" instruction,
@@ -75,26 +90,29 @@ extern void __DISCARD__(void);
 #define FB_
 #define FE_
 
-#endif /* sparc_TARGET_ARCH */
+#endif /* sparc_HOST_ARCH */
 
 /* -----------------------------------------------------------------------------
    Tail calling on Alpha
    -------------------------------------------------------------------------- */
 
-#ifdef alpha_TARGET_ARCH
+#ifdef alpha_HOST_ARCH
 
+#if IN_STG_CODE
 register void *_procedure __asm__("$27");
+#endif
 
-#define JMP_(cont)	    	    	    	\
-    do { _procedure = (void *)(cont);    	\
-         goto *_procedure;    	    	    	\
+#define JMP_(cont)				\
+    do { _procedure = (void *)(cont);		\
+         __DISCARD__();				\
+         goto *_procedure;			\
        } while(0)
 
 /* Don't need these for alpha mangling */
 #define FB_
 #define FE_
 
-#endif /* alpha_TARGET_ARCH */
+#endif /* alpha_HOST_ARCH */
 
 /* -----------------------------------------------------------------------------
    Tail calling on HP
@@ -155,7 +173,7 @@ but uses $$dyncall if necessary to cope, just in case you aren't.
    Tail calling on PowerPC
    -------------------------------------------------------------------------- */
 
-#ifdef powerpc_TARGET_ARCH
+#ifdef powerpc_HOST_ARCH
 
 #define JMP_(cont)			\
     { 					\
@@ -183,7 +201,26 @@ but uses $$dyncall if necessary to cope, just in case you aren't.
 	#define JMP_(cont)	((F_) (cont))()
 */
 
-#endif /* powerpc_TARGET_ARCH */
+#endif /* powerpc_HOST_ARCH */
+
+#ifdef powerpc64_HOST_ARCH
+#define JMP_(cont) ((F_) (cont))()
+#endif
+
+/* -----------------------------------------------------------------------------
+   Tail calling on IA64
+   -------------------------------------------------------------------------- */
+
+#ifdef ia64_HOST_ARCH
+
+/* The compiler can more intelligently decide how to do this.  We therefore
+ * implement it as a call and optimise to a jump at mangle time. */
+#define JMP_(cont)	((F_) (cont))(); __asm__ volatile ("--- TAILCALL ---");
+
+/* Don't emit calls to __DISCARD__ as this causes hassles */
+#define __DISCARD__()
+
+#endif
 
 /* -----------------------------------------------------------------------------
   FUNBEGIN and FUNEND.