[project @ 1998-02-09 13:00:33 by sof]

[ghc-hetmet.git] / ghc / includes / COptWraps.lh

diff --git a/ghc/includes/COptWraps.lh b/ghc/includes/COptWraps.lh
index 409693b..96f84bc 100644 (file)
--- a/ghc/includes/COptWraps.lh
+++ b/ghc/includes/COptWraps.lh
@@ -232,7 +232,8 @@ in the end.
 
 Getting this right requires three extremely @MAGIC@ macros, no doubt
 chock full of assembly gook for the current platform.  These are
-@MAGIC_CALL_SETUP@, which gets ready for one of these magic calls,
+@MAGIC_CALL_SET
+UP@, which gets ready for one of these magic calls,
 @MAGIC_CALL@, which performs the call and stashes away all possible
 results, and @MAGIC_RETURN@, which collects all possible results back
 up again.
@@ -540,6 +541,13 @@ gets whatever it's after.
 
 #define WRAPPER_NAME(f)          /* nothing */
 
+/* 
+   Threaded code needs to be able to grab the return address, in case we have
+   an intervening context switch.
+ */
+
+#define SET_RETADDR(loc)  { register StgFunPtrFunPtr ra __asm__ ("$31"); loc = ra; }
+
 #define WRAPPER_SETUP(f,ignore1,ignore2)  SaveAllStgContext();
 
 #define WRAPPER_RETURN(x)  \