[project @ 2000-06-13 15:04:48 by keithw]

[ghc-hetmet.git] / ghc / compiler / absCSyn / PprAbsC.lhs

diff --git a/ghc/compiler/absCSyn/PprAbsC.lhs b/ghc/compiler/absCSyn/PprAbsC.lhs
index 7c869bf..f3dd000 100644 (file)
--- a/ghc/compiler/absCSyn/PprAbsC.lhs
+++ b/ghc/compiler/absCSyn/PprAbsC.lhs
@@ -151,7 +151,7 @@ pprAbsC (CReturn am return_info)  c
    mk_vector x = hcat [ptext SLIT("RET_VEC"), char '(', pprAmode am, comma,
                       x, rparen ]
 
-pprAbsC (CSplitMarker) _ = ptext SLIT("/* SPLIT */")
+pprAbsC (CSplitMarker) _ = ptext SLIT("__STG_SPLIT_MARKER")
 
 -- we optimise various degenerate cases of CSwitches.
 
@@ -346,7 +346,7 @@ pprAbsC stmt@(CCallTypedef is_tdef (CCall op_str is_asm may_gc cconv) results ar
       -- the first argument will be the "I/O world" token (a VoidRep)
       -- all others should be non-void
      non_void_args =
-       let nvas = tail args
+       let nvas = init args
        in ASSERT (all non_void nvas) nvas
 
       -- there will usually be two results: a (void) state which we
@@ -361,13 +361,14 @@ pprAbsC (CCodeBlock lbl abs_C) _
     else
     case (pprTempAndExternDecls abs_C) of { (pp_temps, pp_exts) ->
     vcat [
-        char ' ',
+        empty,
+       pp_exts, 
        hcat [text (if (externallyVisibleCLabel lbl)
                          then "FN_("   -- abbreviations to save on output
                          else "IFN_("),
                   pprCLabel lbl, text ") {"],
 
-       pp_exts, pp_temps,
+       pp_temps,
 
        nest 8 (ptext SLIT("FB_")),
        nest 8 (pprAbsC abs_C (costs abs_C)),
@@ -599,16 +600,14 @@ ppLocalnessMacro include_dyn_prefix clabel =
   where
    is_visible = externallyVisibleCLabel clabel
    label_type = labelType clabel
-   is_dynamic = labelDynamic clabel
 
    visiblity_prefix
      | is_visible = char 'E'
      | otherwise  = char 'I'
 
    dyn_prefix
-     | not include_dyn_prefix = empty
-     | is_dynamic            = char 'D'
-     | otherwise             = empty
+     | include_dyn_prefix && labelDynamic clabel = char 'D'
+     | otherwise                                = empty
 
 \end{code}
 
@@ -798,9 +797,10 @@ pprCCall call@(CCall op_str is_asm may_gc cconv) args results vol_regs
        | otherwise = ( pp_basic_saves $$ pp_saves,
                        pp_basic_restores $$ pp_restores)
 
-    non_void_args = let nvas = take (length args - 1) args
-                   in ASSERT2 ( all non_void nvas, pprCCallOp call <+> hsep (map pprAmode args) )
-                      nvas
+    non_void_args = 
+       let nvas = init args
+       in ASSERT2 ( all non_void nvas, pprCCallOp call <+> hsep (map pprAmode args) )
+       nvas
     -- the last argument will be the "I/O world" token (a VoidRep)
     -- all others should be non-void
 
@@ -955,7 +955,7 @@ process_casm results args string = process results args string
   process []    _ "" = empty
   process (_:_) _ "" = error ("process_casm: non-void result not assigned while processing _casm_ \"" ++ 
                              string ++ 
-                             "\"\n(Try changing result type to PrimIO ()\n")
+                             "\"\n(Try changing result type to IO ()\n")
 
   process ress args ('%':cs)
     = case cs of
@@ -1108,6 +1108,29 @@ pprAmode amode
   = ppr_amode amode
 \end{code}
 
+When we have an indirection through a CIndex, we have to be careful to
+get the type casts right.  
+
+this amode:
+
+       CVal (CIndex kind1 base offset) kind2
+
+means (in C speak): 
+       
+       *(kind2 *)((kind1 *)base + offset)
+
+That is, the indexing is done in units of kind1, but the resulting
+amode has kind2.
+
+\begin{code}
+ppr_amode (CVal reg_rel@(CIndex _ _ _) kind)
+  = case (pprRegRelative False{-no sign wanted-} reg_rel) of
+       (pp_reg, Nothing)     -> panic "ppr_amode: CIndex"
+       (pp_reg, Just offset) -> 
+          hcat [ char '*', parens (pprPrimKind kind <> char '*'),
+                 parens (pp_reg <> char '+' <> offset) ]
+\end{code}
+
 Now the rest of the cases for ``workhorse'' @ppr_amode@:
 
 \begin{code}
@@ -1294,7 +1317,7 @@ pprUnionTag AddrRep               = char 'a'
 pprUnionTag FloatRep           = char 'f'
 pprUnionTag DoubleRep          = panic "pprUnionTag:Double?"
 
-pprUnionTag StablePtrRep       = char 'i'
+pprUnionTag StablePtrRep       = char 'p'
 pprUnionTag StableNameRep      = char 'p'
 pprUnionTag WeakPtrRep         = char 'p'
 pprUnionTag ForeignObjRep      = char 'p'