[project @ 2000-03-17 13:30:23 by simonmar]
[ghc-hetmet.git] / ghc / rts / Evaluator.c
index 1ef92e1..0624184 100644 (file)
@@ -5,8 +5,8 @@
  * Copyright (c) 1994-1998.
  *
  * $RCSfile: Evaluator.c,v $
- * $Revision: 1.29 $
- * $Date: 1999/11/18 16:02:18 $
+ * $Revision: 1.41 $
+ * $Date: 2000/03/17 13:30:23 $
  * ---------------------------------------------------------------------------*/
 
 #include "Rts.h"
@@ -23,7 +23,9 @@
 #include "Assembler.h" /* for CFun stuff */
 #include "ForeignCall.h"
 #include "PrimOps.h"   /* for __{encode,decode}{Float,Double} */
+#include "Prelude.h"
 #include "Evaluator.h"
+#include "sainteger.h"
 
 #ifdef DEBUG
 #include "Printer.h"
 #include <ieee754.h> /* These are for primops */
 #endif
 
-#ifdef STANDALONE_INTEGER
-#include "sainteger.h"
-#else
-#error Non-standalone integer not yet supported
-#endif
+
 
 /* An incredibly useful abbreviation.
  * Interestingly, there are some uses of END_TSO_QUEUE_closure that
@@ -70,7 +68,7 @@
    for a given function by name.  Useful but a hack.  Sigh.
  */
 extern void* getHugs_AsmObject_for ( char* s );
-
+extern int /*Bool*/ combined;
 
 /* --------------------------------------------------------------------------
  * Crude profiling stuff (mainly to assess effect of optimiser)
@@ -298,7 +296,6 @@ static        StgClosure* raiseAnError   ( StgClosure* exception );
 
 static int  enterCountI = 0;
 
-#ifdef STANDALONE_INTEGER
 StgDouble B__encodeDouble (B* s, I_ e);
 void      B__decodeDouble (B* man, I_* exp, StgDouble dbl);
 #if ! FLOATS_AS_DOUBLES
@@ -308,7 +305,6 @@ StgPtr    CreateByteArrayToHoldInteger ( int );
 B*        IntegerInsideByteArray ( StgPtr );
 void      SloppifyIntegerEnd ( StgPtr );
 #endif
-#endif
 
 
 
@@ -698,6 +694,16 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                     xPushPtr(p);
                     Continue;
                 }
+            Case(i_ALLOC_CONSTR_big):
+                {
+                    StgPtr p;
+                    int x = BCO_INSTR_16;
+                    StgInfoTable* info = bcoConstAddr(bco,x);
+                    SSS; p = grabHpNonUpd(sizeW_fromITBL(info)); LLL;
+                    SET_HDR((StgClosure*)p,info,??);
+                    xPushPtr(p);
+                    Continue;
+                }
             Case(i_MKAP):
                 {
                     int x = BCO_INSTR_8;  /* ToDo: Word not Int! */
@@ -841,7 +847,7 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                 {
                     int  tag       = BCO_INSTR_8;
                     StgWord offset = BCO_INSTR_16;
-                    if (constrTag(stgCast(StgClosure*,xStackPtr(0))) != tag) {
+                    if (constrTag( (StgClosure*)xStackPtr(0) ) != tag) {
                         bciPtr += offset;
                     }
                     Continue;
@@ -905,11 +911,17 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                     xPushTaggedInt(bcoConstInt(bco,BCO_INSTR_8));
                     Continue;
                 }
+            Case(i_CONST_INT_big):
+                {
+                    int n = BCO_INSTR_16;
+                    xPushTaggedInt(bcoConstInt(bco,n));
+                    Continue;
+                }
             Case(i_PACK_INT):
                 {
                     StgClosure* o;
                     SSS; o = (StgClosure*)grabHpNonUpd(Izh_sizeW); LLL;
-                    SET_HDR(o,&Izh_con_info,??);
+                    SET_HDR(o,Izh_con_info,??);
                     payloadWord(o,0) = xPopTaggedInt();
                     IF_DEBUG(evaluator,
                              fprintf(stderr,"\tBuilt "); 
@@ -966,7 +978,7 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                 {
                     StgClosure* o;
                     SSS; o = (StgClosure*)grabHpNonUpd(Wzh_sizeW); LLL;
-                    SET_HDR(o,&Wzh_con_info,??);
+                    SET_HDR(o,Wzh_con_info,??);
                     payloadWord(o,0) = xPopTaggedWord();
                     IF_DEBUG(evaluator,
                              fprintf(stderr,"\tBuilt "); 
@@ -995,11 +1007,17 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                     xPushTaggedAddr(bcoConstAddr(bco,BCO_INSTR_8));
                     Continue;
                 }
+            Case(i_CONST_ADDR_big):
+                {
+                    int n = BCO_INSTR_16;
+                    xPushTaggedAddr(bcoConstAddr(bco,n));
+                    Continue;
+                }
             Case(i_PACK_ADDR):
                 {
                     StgClosure* o;
                     SSS; o = (StgClosure*)grabHpNonUpd(Azh_sizeW); LLL;
-                    SET_HDR(o,&Azh_con_info,??);
+                    SET_HDR(o,Azh_con_info,??);
                     payloadPtr(o,0) = xPopTaggedAddr();
                     IF_DEBUG(evaluator,
                              fprintf(stderr,"\tBuilt "); 
@@ -1032,7 +1050,7 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                 {
                     StgClosure* o;
                     SSS; o = (StgClosure*)grabHpNonUpd(Czh_sizeW); LLL;
-                    SET_HDR(o,&Czh_con_info,??);
+                    SET_HDR(o,Czh_con_info,??);
                     payloadWord(o,0) = xPopTaggedChar();
                     xPushPtr(stgCast(StgPtr,o));
                     IF_DEBUG(evaluator,
@@ -1065,7 +1083,7 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                 {
                     StgClosure* o;
                     SSS; o = (StgClosure*)grabHpNonUpd(Fzh_sizeW); LLL;
-                    SET_HDR(o,&Fzh_con_info,??);
+                    SET_HDR(o,Fzh_con_info,??);
                     ASSIGN_FLT(&payloadWord(o,0),xPopTaggedFloat());
                     IF_DEBUG(evaluator,
                              fprintf(stderr,"\tBuilt "); 
@@ -1104,7 +1122,7 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                 {
                     StgClosure* o;
                     SSS; o = (StgClosure*)grabHpNonUpd(Dzh_sizeW); LLL;
-                    SET_HDR(o,&Dzh_con_info,??);
+                    SET_HDR(o,Dzh_con_info,??);
                     ASSIGN_DBL(&payloadWord(o,0),xPopTaggedDouble());
                     IF_DEBUG(evaluator,
                              fprintf(stderr,"\tBuilt "); 
@@ -1130,7 +1148,7 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                 {
                     StgClosure* o;
                     SSS; o = (StgClosure*)grabHpNonUpd(Stablezh_sizeW); LLL;
-                    SET_HDR(o,&StablePtr_con_info,??);
+                    SET_HDR(o,StablePtr_con_info,??);
                     payloadWord(o,0) = xPopTaggedStable();
                     IF_DEBUG(evaluator,
                              fprintf(stderr,"\tBuilt "); 
@@ -1258,11 +1276,9 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
             Case(i_VAR_FLOAT_big):
             Case(i_CONST_CHAR_big):
             Case(i_VAR_CHAR_big):
-            Case(i_CONST_ADDR_big):
             Case(i_VAR_ADDR_big):
             Case(i_VAR_STABLE_big):
             Case(i_CONST_INTEGER_big):
-            Case(i_CONST_INT_big):
             Case(i_VAR_INT_big):
             Case(i_VAR_WORD_big):
             Case(i_RETADDR_big):
@@ -1327,7 +1343,7 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
     case SE_CAF_BLACKHOLE:
         {
             /* Let the scheduler figure out what to do :-) */
-            cap->rCurrentTSO->whatNext = ThreadEnterGHC;
+            cap->rCurrentTSO->what_next = ThreadEnterGHC;
             xPushCPtr(obj);
             RETURN(ThreadYielding);
         }
@@ -1438,7 +1454,9 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
                 case RET_VEC_SMALL:
                 case RET_BIG:
                 case RET_VEC_BIG:
-                 //       barf("todo: RET_[VEC_]{BIG,SMALL}");
+                        cap->rCurrentTSO->what_next = ThreadEnterGHC;
+                        xPushCPtr(obj);
+                        RETURN(ThreadYielding);
                 default:
                         belch("entered CONSTR with invalid continuation on stack");
                         IF_DEBUG(evaluator,
@@ -1457,7 +1475,7 @@ StgThreadReturnCode enter( Capability* cap, StgClosure* obj0 )
             //fprintf(stderr, "entering unknown closure -- yielding to sched\n"); 
             //printObj(obj);
             //LLL;
-            cap->rCurrentTSO->whatNext = ThreadEnterGHC;
+            cap->rCurrentTSO->what_next = ThreadEnterGHC;
             xPushCPtr(obj); /* code to restart with */
             RETURN(ThreadYielding);
         }
@@ -1769,7 +1787,7 @@ static StgClosure* makeErrorCall ( const char* msg )
    HaskellObj error 
       = asmClosureOfObject(getHugs_AsmObject_for("error"));
    HaskellObj unpack
-      = asmClosureOfObject(getHugs_AsmObject_for("primUnpackString"));
+      = asmClosureOfObject(getHugs_AsmObject_for("hugsprimUnpackString"));
    HaskellObj thunk
       = rts_apply ( unpack, rts_mkAddr ( (void*)msg ) );
    thunk
@@ -2103,17 +2121,16 @@ static StgClosure* makeErrorCall ( const char* msg )
 }
 
 
-#ifdef STANDALONE_INTEGER
 StgPtr CreateByteArrayToHoldInteger ( int nbytes )
 {
-   StgInt  words     = (nbytes+sizeof(W_)-1)/sizeof(W_);
+   StgWord words     = (nbytes+sizeof(W_)-1)/sizeof(W_);
    StgWord size      = sizeofW(StgArrWords) + words;
    StgArrWords* arr  = (StgArrWords*)allocate(size);
    SET_HDR(arr,&ARR_WORDS_info,CCCS);
    arr->words = words;
-   ASSERT(nbytes <= arr->words * sizeof(W_));
+   ASSERT((W_)nbytes <= arr->words * sizeof(W_));
 #ifdef DEBUG
-   {nat i;
+   {StgWord i;
     for (i = 0; i < words; ++i) {
     arr->payload[i] = 0xdeadbeef;
    }}
@@ -2172,7 +2189,6 @@ void SloppifyIntegerEnd ( StgPtr arr0 )
    SloppifyIntegerEnd(p);                            \
    PushPtr(p);                                       \
 }
-#endif
 
 
 
@@ -2201,7 +2217,7 @@ void SloppifyIntegerEnd ( StgPtr arr0 )
 }
 
 
-void myStackCheck ( Capability* cap )
+static void myStackCheck ( Capability* cap )
 {
    /* fprintf(stderr, "myStackCheck\n"); */
    if (!(gSpLim <= gSp && gSp <= stgCast(StgPtr,gSu))) {
@@ -2209,21 +2225,22 @@ void myStackCheck ( Capability* cap )
       assert(0);
    }
    while (1) {
-      if (!(gSu >= cap->rCurrentTSO->stack 
-            && gSu <= cap->rCurrentTSO->stack 
-               + cap->rCurrentTSO->stack_size)) {
+      if (!( (P_)gSu >= (P_)cap->rCurrentTSO->stack 
+              && 
+              (P_)gSu <= (P_)(cap->rCurrentTSO->stack 
+                              + cap->rCurrentTSO->stack_size))) {
          fprintf ( stderr, "myStackCheck: gSu out of stack\n" );
          assert(0);
       }
       switch (get_itbl(stgCast(StgClosure*,gSu))->type) {
       case CATCH_FRAME:
-         gSu = (StgPtr) ((StgCatchFrame*)(gSu))->link;
+         gSu = (StgUpdateFrame*) ((StgCatchFrame*)(gSu))->link;
          break;
       case UPDATE_FRAME:
-         gSu = (StgPtr) ((StgUpdateFrame*)(gSu))->link;
+         gSu = (StgUpdateFrame*) ((StgUpdateFrame*)(gSu))->link;
          break;
       case SEQ_FRAME:
-         gSu = (StgPtr) ((StgSeqFrame*)(gSu))->link;
+         gSu = (StgUpdateFrame*) ((StgSeqFrame*)(gSu))->link;
          break;
       case STOP_FRAME:
          goto postloop;
@@ -2244,6 +2261,9 @@ void myStackCheck ( Capability* cap )
 */
 static void* enterBCO_primop1 ( int primop1code )
 {
+    if (combined)
+       barf("enterBCO_primop1 in combined mode");
+
     switch (primop1code) {
         case i_pushseqframe:
             {
@@ -2413,7 +2433,6 @@ static void* enterBCO_primop1 ( int primop1code )
         case i_readStableOffAddr:  OP_AI_s(indexStablePtrOffAddrzh(r,x,y)); break;
         case i_writeStableOffAddr: OP_AIs_(writeStablePtrOffAddrzh(x,y,z)); break;
 
-#ifdef STANDALONE_INTEGER
         case i_compareInteger:     
             {
                 B* x = IntegerInsideByteArray(PopPtr());
@@ -2478,9 +2497,6 @@ static void* enterBCO_primop1 ( int primop1code )
                                       IntegerInsideByteArray(PopPtr())
                                    ));
                                    break; 
-#else
-#error Non-standalone integer not yet implemented
-#endif /* STANDALONE_INTEGER */
 
         case i_gtFloat:         OP_FF_B(x>y);        break;
         case i_geFloat:         OP_FF_B(x>=y);       break;
@@ -2521,7 +2537,6 @@ static void* enterBCO_primop1 ( int primop1code )
         case i_tanhFloat:       OP_F_F(tanh(x));     break;
         case i_powerFloat:      OP_FF_F(pow(x,y));   break;
 
-#ifdef STANDALONE_INTEGER
         case i_encodeFloatZ:
             {
                 StgPtr sig = PopPtr();
@@ -2541,9 +2556,7 @@ static void* enterBCO_primop1 ( int primop1code )
                 PushPtr(sig);
             }
             break;
-#else
-#error encode/decodeFloatZ not yet implemented for GHC ints
-#endif
+
         case i_isNaNFloat:      OP_F_B(isFloatNaN(x));      break;
         case i_isInfiniteFloat: OP_F_B(isFloatInfinite(x)); break;
         case i_isNegativeZeroFloat: OP_F_B(isFloatNegativeZero(x)); break;
@@ -2589,7 +2602,6 @@ static void* enterBCO_primop1 ( int primop1code )
         case i_tanhDouble:      OP_D_D(tanh(x));     break;
         case i_powerDouble:     OP_DD_D(pow(x,y));   break;
 
-#ifdef STANDALONE_INTEGER
         case i_encodeDoubleZ:
             {
                 StgPtr sig = PopPtr();
@@ -2609,9 +2621,7 @@ static void* enterBCO_primop1 ( int primop1code )
                 PushPtr(sig);
             }
             break;
-#else
-#error encode/decodeDoubleZ not yet implemented for GHC ints
-#endif
+
         case i_isNaNDouble:      OP_D_B(isDoubleNaN(x));      break;
         case i_isInfiniteDouble: OP_D_B(isDoubleInfinite(x)); break;
         case i_isNegativeZeroDouble: OP_D_B(isDoubleNegativeZero(x)); break;
@@ -2640,6 +2650,15 @@ static void* enterBCO_primop2 ( int primop2code,
                                 StgBCO** bco,
                                 Capability* cap )
 {
+        if (combined) {
+          /* A small concession: we need to allow ccalls, 
+              even in combined mode.
+           */
+           if (primop2code != i_ccall_ccall_IO &&
+               primop2code != i_ccall_stdcall_IO)
+              barf("enterBCO_primop2 in combined mode");
+        }
+
         switch (primop2code) {
         case i_raise:  /* raise#{err} */
             {
@@ -2950,7 +2969,7 @@ static void* enterBCO_primop2 ( int primop2code,
                     */
                     PushCPtr((StgClosure*)(*bco));
                     *return2 = ThreadBlocked;
-                    return (void*)(1+(NULL));
+                    return (void*)(1+(char*)(NULL));
 
                 } else {
                     PushCPtr(mvar->value);
@@ -3037,14 +3056,6 @@ static void* enterBCO_primop2 ( int primop2code,
                 break;
             }
 
-#if 1
-#if 0
-ToDo: another way out of the problem might be to add an explicit
-continuation to primTakeMVar: takeMVar v = primTakeMVar v takeMVar.
-The problem with this plan is that now I dont know how much to chop
-off the stack.
-#endif
-#endif
         case i_delay:
         case i_waitRead:
         case i_waitWrite:
@@ -3059,9 +3070,12 @@ off the stack.
         case i_ccall_stdcall_IO:
             {
                 int r;
-                CFunDescriptor* descriptor = PopTaggedAddr();
-                void (*funPtr)(void)       = PopTaggedAddr();
-                char cc = (primop2code == i_ccall_stdcall_Id ||
+                CFunDescriptor* descriptor;
+                void (*funPtr)(void);
+                char cc;
+                descriptor = PopTaggedAddr();
+                funPtr     = PopTaggedAddr();
+                 cc = (primop2code == i_ccall_stdcall_Id ||
                            primop2code == i_ccall_stdcall_IO)
                           ? 's' : 'c';
                 r = ccall(descriptor,funPtr,bco,cc,cap);
@@ -3097,7 +3111,7 @@ nat marshall(char arg_ty, void* arg)
     case INT_REP:
             PushTaggedInt(*((int*)arg));
             return ARG_SIZE(INT_TAG);
-#ifdef TODO_STANDALONE_INTEGER
+#if 0
     case INTEGER_REP:
             PushTaggedInteger(*((mpz_ptr*)arg));
             return ARG_SIZE(INTEGER_TAG);
@@ -3149,7 +3163,7 @@ nat unmarshall(char res_ty, void* res)
     case INT_REP:
             *((int*)res) = PopTaggedInt();
             return ARG_SIZE(INT_TAG);
-#ifdef TODO_STANDALONE_INTEGER
+#if 0
     case INTEGER_REP:
             *((mpz_ptr*)res) = PopTaggedInteger();
             return ARG_SIZE(INTEGER_TAG);
@@ -3200,7 +3214,7 @@ nat argSize( const char* ks )
         case INT_REP:
                 sz += sizeof(StgWord) * ARG_SIZE(INT_TAG);
                 break;
-#ifdef TODO_STANDALONE_INTEGER
+#if 0
         case INTEGER_REP:
                 sz += sizeof(StgWord) * ARG_SIZE(INTEGER_TAG);
                 break;
@@ -3245,8 +3259,6 @@ nat argSize( const char* ks )
  * (ghc/rts/StgPrimFloat.c)
  * ---------------------------------------------------------------------------*/
 
-#ifdef STANDALONE_INTEGER
-
 #if IEEE_FLOATING_POINT
 #define MY_DMINEXP  ((DBL_MIN_EXP) - (DBL_MANT_DIG) - 1)
 /* DMINEXP is defined in values.h on Linux (for example) */
@@ -3418,6 +3430,4 @@ void B__decodeFloat (B* man, I_* exp, StgFloat flt)
 
 #endif /* FLOATS_AS_DOUBLES */
 
-#endif /* STANDALONE_INTEGER */
-
 #endif /* INTERPRETER */