* Copyright (c) 1994-2000.
*
* $RCSfile: Interpreter.c,v $
- * $Revision: 1.16 $
- * $Date: 2001/02/06 12:09:42 $
+ * $Revision: 1.31 $
+ * $Date: 2001/11/08 12:46:31 $
* ---------------------------------------------------------------------------*/
-#ifdef GHCI
-
+#include "PosixSource.h"
#include "Rts.h"
#include "RtsAPI.h"
#include "RtsUtils.h"
#define BCO_LIT(n) (W_)literals[n]
#define BCO_ITBL(n) itbls[n]
-#define LOAD_STACK_POINTERS \
- iSp = cap->rCurrentTSO->sp; iSu = cap->rCurrentTSO->su;
+#define LOAD_STACK_POINTERS \
+ iSp = cap->r.rCurrentTSO->sp; \
+ iSu = cap->r.rCurrentTSO->su; \
+ /* We don't change this ... */ \
+ iSpLim = cap->r.rCurrentTSO->stack + RESERVED_STACK_WORDS;
+
-#define SAVE_STACK_POINTERS \
- cap->rCurrentTSO->sp = iSp; cap->rCurrentTSO->su = iSu;
+#define SAVE_STACK_POINTERS \
+ cap->r.rCurrentTSO->sp = iSp; \
+ cap->r.rCurrentTSO->su = iSu;
-#define RETURN(retcode) \
+#define RETURN(retcode) \
SAVE_STACK_POINTERS; return retcode;
void interp_shutdown ( void )
{
int i, j, k, o_max, i_max, j_max;
- fprintf(stderr, "%d constrs entered -> (%d BCO, %d UPD, %d ???)\n",
+ fprintf(stderr, "%d constrs entered -> (%d BCO, %d UPD, %d ??? )\n",
it_retto_BCO + it_retto_UPDATE + it_retto_other,
it_retto_BCO, it_retto_UPDATE, it_retto_other );
fprintf(stderr, "%d total entries, %d unknown entries \n",
LOAD_STACK_POINTERS;
- /* We don't change this ... */
- iSpLim = cap->rCurrentTSO->stack + RESERVED_STACK_WORDS;
-
/* Main object-entering loop. Object to be entered is on top of
stack. */
nextEnter:
// checkSanity(1);
// iSp--; StackWord(0) = obj;
- // checkStack(iSp,cap->rCurrentTSO->stack+cap->rCurrentTSO->stack_size,iSu);
+ // checkStack(iSp,cap->r.rCurrentTSO->stack+cap->r.rCurrentTSO->stack_size,iSu);
// iSp++;
- printStack(iSp,cap->rCurrentTSO->stack+cap->rCurrentTSO->stack_size,iSu);
+ printStack(iSp,cap->r.rCurrentTSO->stack+cap->r.rCurrentTSO->stack_size,iSu);
fprintf(stderr, "\n\n");
);
case SEQ_FRAME:
/* Too complicated ... adopt the Usual Solution. */
- fprintf(stderr, "!!! SEQ frame in PAP update\n");
+ /* fprintf(stderr, "!!! SEQ frame in PAP update\n"); */
goto defer_to_sched;
case CATCH_FRAME:
/* Heap check */
if (doYouWantToGC()) {
iSp--; StackWord(0) = (W_)bco;
- cap->rCurrentTSO->what_next = ThreadEnterInterp;
+ cap->r.rCurrentTSO->what_next = ThreadEnterInterp;
RETURN(HeapOverflow);
}
if (iSp - (INTERP_STACK_CHECK_THRESH+1) < iSpLim) {
iSp--;
StackWord(0) = (W_)obj;
- cap->rCurrentTSO->what_next = ThreadEnterInterp;
+ cap->r.rCurrentTSO->what_next = ThreadEnterInterp;
RETURN(StackOverflow);
}
if (context_switch) {
iSp--;
StackWord(0) = (W_)obj;
- cap->rCurrentTSO->what_next = ThreadEnterInterp;
+ cap->r.rCurrentTSO->what_next = ThreadEnterInterp;
RETURN(ThreadYielding);
}
IF_DEBUG(evaluator,
//if (do_print_stack) {
//fprintf(stderr, "\n-- BEGIN stack\n");
- //printStack(iSp,cap->rCurrentTSO->stack+cap->rCurrentTSO->stack_size,iSu);
+ //printStack(iSp,cap->r.rCurrentTSO->stack+cap->r.rCurrentTSO->stack_size,iSu);
//fprintf(stderr, "-- END stack\n\n");
//}
do_print_stack = 1;
fprintf(stderr, "%d %p\n", i, (StgPtr)(*(iSp+i)));
fprintf(stderr,"\n");
}
- //if (do_print_stack) checkStack(iSp,cap->rCurrentTSO->stack+cap->rCurrentTSO->stack_size,iSu);
+ //if (do_print_stack) checkStack(iSp,cap->r.rCurrentTSO->stack+cap->r.rCurrentTSO->stack_size,iSu);
);
# ifdef INTERP_STATS
if (iSp - stk_words_reqd < iSpLim) {
iSp--;
StackWord(0) = (W_)obj;
- cap->rCurrentTSO->what_next = ThreadEnterInterp;
+ cap->r.rCurrentTSO->what_next = ThreadEnterInterp;
RETURN(StackOverflow);
}
goto nextInsn;
fprintf(stderr,"\tBuilt ");
printObj((StgClosure*)pap);
);
- cap->rCurrentTSO->what_next = ThreadEnterGHC;
+ cap->r.rCurrentTSO->what_next = ThreadEnterGHC;
RETURN(ThreadYielding);
}
case bci_PUSH_L: {
ap = (StgAP_UPD*)allocate_UPD(request);
StackWord(-1) = (W_)ap;
ap->n_args = n_payload;
- SET_HDR(ap, &stg_AP_UPD_info, ??)
+ SET_HDR(ap, &stg_AP_UPD_info, CCS_SYSTEM/*ToDo*/)
iSp --;
goto nextInsn;
}
bciPtr = failto;
goto nextInsn;
}
+ case bci_TESTLT_F: {
+ /* The top thing on the stack should be a tagged float. */
+ int discr = BCO_NEXT;
+ int failto = BCO_NEXT;
+ StgFloat stackFlt, discrFlt;
+ ASSERT(sizeofW(StgFloat) == StackWord(0));
+ stackFlt = PK_FLT( & StackWord(1) );
+ discrFlt = PK_FLT( & BCO_LIT(discr) );
+ if (stackFlt >= discrFlt)
+ bciPtr = failto;
+ goto nextInsn;
+ }
+ case bci_TESTEQ_F: {
+ /* The top thing on the stack should be a tagged float. */
+ int discr = BCO_NEXT;
+ int failto = BCO_NEXT;
+ StgFloat stackFlt, discrFlt;
+ ASSERT(sizeofW(StgFloat) == StackWord(0));
+ stackFlt = PK_FLT( & StackWord(1) );
+ discrFlt = PK_FLT( & BCO_LIT(discr) );
+ if (stackFlt != discrFlt)
+ bciPtr = failto;
+ goto nextInsn;
+ }
/* Control-flow ish things */
case bci_ENTER: {
if (ret_itbl == (StgInfoTable*)&stg_ctoi_ret_R1p_info
|| ret_itbl == (StgInfoTable*)&stg_ctoi_ret_R1n_info
|| ret_itbl == (StgInfoTable*)&stg_ctoi_ret_F1_info
- || ret_itbl == (StgInfoTable*)&stg_ctoi_ret_D1_info) {
+ || ret_itbl == (StgInfoTable*)&stg_ctoi_ret_D1_info
+ || ret_itbl == (StgInfoTable*)&stg_ctoi_ret_V_info) {
/* Returning to interpreted code. Interpret the BCO
immediately underneath the itbl. */
StgBCO* ret_bco = (StgBCO*)StackWord(tag +1+1);
the TOS value into R1/F1/D1 and do a standard
compiled-code return. */
StgInfoTable* magic_itbl = BCO_ITBL(o_itoc_itbl);
- StackWord(0) = (W_)magic_itbl;
- cap->rCurrentTSO->what_next = ThreadRunGHC;
- RETURN(ThreadYielding);
+ if (magic_itbl != NULL) {
+ StackWord(0) = (W_)magic_itbl;
+ cap->r.rCurrentTSO->what_next = ThreadRunGHC;
+ RETURN(ThreadYielding);
+ } else {
+ /* Special case -- returning a VoidRep to
+ compiled code. T.O.S is the VoidRep tag,
+ and underneath is the return itbl. Zap the
+ tag and enter the itbl. */
+ ASSERT(StackWord(0) == (W_)NULL);
+ iSp ++;
+ cap->r.rCurrentTSO->what_next = ThreadRunGHC;
+ RETURN(ThreadYielding);
+ }
}
}
-
+ case bci_SWIZZLE: {
+ int stkoff = BCO_NEXT;
+ signed short n = (signed short)(BCO_NEXT);
+ StackWord(stkoff) += (W_)n;
+ goto nextInsn;
+ }
+ case bci_CCALL: {
+ StgInt tok;
+ int o_itbl = BCO_NEXT;
+ void(*marshall_fn)(void*) = (void (*)(void*))BCO_LIT(o_itbl);
+ SAVE_STACK_POINTERS;
+ tok = suspendThread(cap);
+ marshall_fn ( (void*)(& StackWord(0) ) );
+ cap = resumeThread(tok);
+ LOAD_STACK_POINTERS;
+ goto nextInsn;
+ }
+ case bci_JMP: {
+ /* BCO_NEXT modifies bciPtr, so be conservative. */
+ int nextpc = BCO_NEXT;
+ bciPtr = nextpc;
+ goto nextInsn;
+ }
case bci_CASEFAIL:
barf("interpretBCO: hit a CASEFAIL");
- /* As yet unimplemented */
- case bci_TESTLT_F:
- case bci_TESTEQ_F:
-
/* Errors */
default:
barf("interpretBCO: unknown or unimplemented opcode");
printObj(obj);
);
iSp--; StackWord(0) = (W_)obj;
- cap->rCurrentTSO->what_next = ThreadEnterGHC;
+ cap->r.rCurrentTSO->what_next = ThreadEnterGHC;
RETURN(ThreadYielding);
}
} /* switch on object kind */
barf("fallen off end of object-type switch in interpretBCO()");
}
-
-#endif /* GHCI */
projects / ghc-hetmet.git / blobdiff