[project @ 2001-01-15 09:55:41 by sewardj]

Add mkApUpd0# primop, used to make sure bytecode-compiled top-level things
are updateable.

ghc/compiler/prelude/primops.txt

 -----------------------------------------------------------------------
--- $Id: primops.txt,v 1.13 2001/01/03 16:44:29 sewardj Exp $
+-- $Id: primops.txt,v 1.14 2001/01/15 09:55:41 sewardj Exp $
 --
 -- Primitive Operations
 --
@@ -43,13 +43,24 @@ defaults
 
 
 ------------------------------------------------------------------------
---- Support for the bytecode linker                                  ---
+--- Support for the bytecode interpreter and linker                  ---
 ------------------------------------------------------------------------
 
 -- Convert an Addr# to a followable type
 primop   AddrToHValueOp "addrToHValue#" GenPrimOp
    Addr# -> (# a #)
 
+primop   MkApUpd0_Op "mkApUpd0#" GenPrimOp
+   a -> (# a #)
+   with
+   out_of_line = True
+
+primop  NewBCOOp "newBCO#" GenPrimOp
+   ByteArr# -> ByteArr# -> Array# a -> ByteArr# -> State# s -> (# State# s, BCO# #)
+   with
+   has_side_effects = True
+   out_of_line      = True
+
 
 ------------------------------------------------------------------------
 --- Addr#                                                            ---
@@ -1098,16 +1109,6 @@ primop TouchOp "touch#" GenPrimOp
    with
    strictness       = { \ arity -> StrictnessInfo [wwLazy, wwPrim] False }
 
-------------------------------------------------------------------------
---- Bytecode objects                                                 ---
-------------------------------------------------------------------------
-
-primop  NewBCOOp "newBCO#" GenPrimOp
-   ByteArr# -> ByteArr# -> Array# a -> ByteArr# -> State# s -> (# State# s, BCO# #)
-   with
-   has_side_effects = True
-   out_of_line      = True
-
 
 ------------------------------------------------------------------------
 --- Weak pointers                                                    ---

ghc/includes/PrimOps.h

 /* -----------------------------------------------------------------------------
- * $Id: PrimOps.h,v 1.71 2001/01/03 16:44:29 sewardj Exp $
+ * $Id: PrimOps.h,v 1.72 2001/01/15 09:55:41 sewardj Exp $
  *
  * (c) The GHC Team, 1998-2000
  *
@@ -934,10 +934,11 @@ EXTFUN_RTS(mkForeignObjzh_fast);
 /*  tagToEnum# is handled directly by the code generator. */
 
 /* -----------------------------------------------------------------------------
-   BCOs
+   BCOs and BCO linkery
    -------------------------------------------------------------------------- */
 
 EXTFUN_RTS(newBCOzh_fast);
+EXTFUN_RTS(mkApUpd0zh_fast);
 
 /* -----------------------------------------------------------------------------
    Signal processing.  Not really primops, but called directly from

ghc/lib/std/PrelGHC.hi-boot

@@ -386,6 +386,7 @@ __export PrelGHC
 
   newBCOzh
   BCOzh
+  mkApUpd0zh
 
   unsafeCoercezh
   addrToHValuezh

ghc/rts/Interpreter.c

@@ -5,8 +5,8 @@
  * Copyright (c) 1994-2000.
  *
  * $RCSfile: Interpreter.c,v $
- * $Revision: 1.11 $
- * $Date: 2001/01/12 12:06:24 $
+ * $Revision: 1.12 $
+ * $Date: 2001/01/15 09:55:41 $
  * ---------------------------------------------------------------------------*/
 
 #ifdef GHCI
@@ -344,6 +344,7 @@ StgThreadReturnCode interpretBCO ( Capability* cap )
 		 //fprintf(stderr, "---PACK p %d, np %d\n",
 		 //	 (int) itbl->layout.payload.ptrs,
 		 //	 (int) itbl->layout.payload.nptrs );
+                 ASSERT( itbl->layout.payload.ptrs + itbl->layout.payload.nptrs > 0);
                  SET_HDR(con, BCO_ITBL(o_itbl), CCS_SYSTEM/*ToDo*/);
                  for (i = 0; i < n_words; i++)
                     con->payload[i] = (StgClosure*)StackWord(i);

ghc/rts/PrimOps.hc

 /* -----------------------------------------------------------------------------
- * $Id: PrimOps.hc,v 1.66 2000/12/20 15:17:55 rrt Exp $
+ * $Id: PrimOps.hc,v 1.67 2001/01/15 09:55:41 sewardj Exp $
  *
  * (c) The GHC Team, 1998-2000
  *
@@ -1042,6 +1042,26 @@ FN_(newBCOzh_fast)
   RET_P(bco);
   FE_
 }
+
+FN_(mkApUpd0zh_fast)
+{
+  /* R1.p = the fn for the AP_UPD
+  */
+  StgAP_UPD* ap;
+  FB_
+  HP_CHK_GEN_TICKY(AP_sizeW(0), R1_PTR, mkApUpd0zh_fast,);
+  TICK_ALLOC_PRIM(sizeofW(StgHeader), AP_sizeW(0)-sizeofW(StgHeader), 0);
+  CCS_ALLOC(CCCS,AP_sizeW(0)); /* ccs prof */
+  ap = (StgAP_UPD *) (Hp + 1 - AP_sizeW(0));
+  SET_HDR(ap, &stg_AP_UPD_info, CCCS);
+
+  ap->n_args = 0;
+  ap->fun = R1.cl;
+
+  TICK_RET_UNBOXED_TUP(1);
+  RET_P(ap);
+  FE_
+}
 #endif
 
 /* -----------------------------------------------------------------------------