/* -----------------------------------------------------------------------------
- * $Id: StgMiscClosures.hc,v 1.56 2000/12/15 10:37:51 sewardj Exp $
+ * $Id: StgMiscClosures.hc,v 1.69 2001/11/08 12:46:31 simonmar Exp $
*
* (c) The GHC Team, 1998-2000
*
*
* ---------------------------------------------------------------------------*/
+#include "Stg.h"
#include "Rts.h"
#include "RtsUtils.h"
#include "RtsFlags.h"
#include "StgMiscClosures.h"
-#include "HeapStackCheck.h" /* for stg_gen_yield */
#include "Storage.h"
#include "StoragePriv.h"
#include "Profiling.h"
Support for the bytecode interpreter.
-------------------------------------------------------------------------- */
-#ifdef GHCI
-
/* 9 bits of return code for constructors created by the interpreter. */
FN_(stg_interp_constr_entry)
{
/* R1 points at the constructor */
FB_
- STGCALL2(fprintf,stderr,"stg_interp_constr_entry (direct return)!\n");
+ /* STGCALL2(fprintf,stderr,"stg_interp_constr_entry (direct return)!\n"); */
/* Pointless, since SET_TAG doesn't do anything */
SET_TAG( GET_TAG(GET_INFO(R1.cl)));
JMP_(ENTRY_CODE((P_)(*Sp)));
/* Some info tables to be used when compiled code returns a value to
the interpreter, i.e. the interpreter pushes one of these onto the
stack before entering a value. What the code does is to
- impedance-match the compiled return convention (in R1/F1/D1 etc) to
+ impedance-match the compiled return convention (in R1p/R1n/F1/D1 etc) to
the interpreter's convention (returned value is on top of stack),
and then cause the scheduler to enter the interpreter.
ptr to one of these info tables.
The info table code, both direct and vectored, must:
- * push R1/F1/D1 on the stack
+ * push R1/F1/D1 on the stack, and its tag if necessary
* push the BCO (so it's now on the stack twice)
* Yield, ie, go to the scheduler.
haven't got a good story about that yet.
*/
-/* When the returned value is in R1 ... */
-#define STG_CtoI_RET_R1_Template(label) \
+/* When the returned value is in R1 and it is a pointer, so doesn't
+ need tagging ... */
+#define STG_CtoI_RET_R1p_Template(label) \
IFN_(label) \
{ \
StgPtr bco; \
FE_ \
}
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_entry);
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_0_entry);
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_1_entry);
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_2_entry);
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_3_entry);
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_4_entry);
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_5_entry);
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_6_entry);
-STG_CtoI_RET_R1_Template(stg_ctoi_ret_R1_7_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_0_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_1_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_2_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_3_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_4_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_5_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_6_entry);
+STG_CtoI_RET_R1p_Template(stg_ctoi_ret_R1p_7_entry);
+
+VEC_POLY_INFO_TABLE(stg_ctoi_ret_R1p,0, NULL/*srt*/, 0/*srt_off*/, 0/*srt_len*/, RET_BCO,, EF_);
+
+
+
+/* When the returned value is in R1 and it isn't a pointer. */
+#define STG_CtoI_RET_R1n_Template(label) \
+ IFN_(label) \
+ { \
+ StgPtr bco; \
+ FB_ \
+ bco = ((StgPtr*)Sp)[1]; \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = (StgPtr)R1.i; \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = (StgPtr)1; /* tag */ \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = bco; \
+ JMP_(stg_yield_to_interpreter); \
+ FE_ \
+ }
+
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_entry);
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_0_entry);
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_1_entry);
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_2_entry);
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_3_entry);
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_4_entry);
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_5_entry);
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_6_entry);
+STG_CtoI_RET_R1n_Template(stg_ctoi_ret_R1n_7_entry);
+
+VEC_POLY_INFO_TABLE(stg_ctoi_ret_R1n,0, NULL/*srt*/, 0/*srt_off*/, 0/*srt_len*/, RET_BCO,, EF_);
+
-VEC_POLY_INFO_TABLE(stg_ctoi_ret_R1,0, NULL/*srt*/, 0/*srt_off*/, 0/*srt_len*/, RET_BCO,, EF_);
/* When the returned value is in F1 ... */
-/* TODO */
+#define STG_CtoI_RET_F1_Template(label) \
+ IFN_(label) \
+ { \
+ StgPtr bco; \
+ FB_ \
+ bco = ((StgPtr*)Sp)[1]; \
+ Sp -= sizeofW(StgFloat); \
+ ASSIGN_FLT((W_*)Sp, F1); \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = (StgPtr)sizeofW(StgFloat); \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = bco; \
+ JMP_(stg_yield_to_interpreter); \
+ FE_ \
+ }
+
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_entry);
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_0_entry);
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_1_entry);
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_2_entry);
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_3_entry);
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_4_entry);
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_5_entry);
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_6_entry);
+STG_CtoI_RET_F1_Template(stg_ctoi_ret_F1_7_entry);
+
+VEC_POLY_INFO_TABLE(stg_ctoi_ret_F1,0, NULL/*srt*/, 0/*srt_off*/, 0/*srt_len*/, RET_BCO,, EF_);
+
+
/* When the returned value is in D1 ... */
-/* TODO */
+#define STG_CtoI_RET_D1_Template(label) \
+ IFN_(label) \
+ { \
+ StgPtr bco; \
+ FB_ \
+ bco = ((StgPtr*)Sp)[1]; \
+ Sp -= sizeofW(StgDouble); \
+ ASSIGN_DBL((W_*)Sp, D1); \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = (StgPtr)sizeofW(StgDouble); \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = bco; \
+ JMP_(stg_yield_to_interpreter); \
+ FE_ \
+ }
+
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_entry);
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_0_entry);
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_1_entry);
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_2_entry);
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_3_entry);
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_4_entry);
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_5_entry);
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_6_entry);
+STG_CtoI_RET_D1_Template(stg_ctoi_ret_D1_7_entry);
+
+VEC_POLY_INFO_TABLE(stg_ctoi_ret_D1,0, NULL/*srt*/, 0/*srt_off*/, 0/*srt_len*/, RET_BCO,, EF_);
+
+
+/* When the returned value a VoidRep ... */
+#define STG_CtoI_RET_V_Template(label) \
+ IFN_(label) \
+ { \
+ StgPtr bco; \
+ FB_ \
+ bco = ((StgPtr*)Sp)[1]; \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = 0; /* VoidRep tag */ \
+ Sp -= 1; \
+ ((StgPtr*)Sp)[0] = bco; \
+ JMP_(stg_yield_to_interpreter); \
+ FE_ \
+ }
+
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_entry);
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_0_entry);
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_1_entry);
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_2_entry);
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_3_entry);
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_4_entry);
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_5_entry);
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_6_entry);
+STG_CtoI_RET_V_Template(stg_ctoi_ret_V_7_entry);
+
+VEC_POLY_INFO_TABLE(stg_ctoi_ret_V,0, NULL/*srt*/, 0/*srt_off*/, 0/*srt_len*/, RET_BCO,, EF_);
/* The other way round: when the interpreter returns a value to
FE_
}
-#endif /* GHCI */
-
/* -----------------------------------------------------------------------------
Entry code for an indirection.
# ifdef PROFILING
# error Profiling and ticky-ticky do not mix at present!
# endif /* PROFILING */
- SET_INFO((StgInd*)R1.p,&IND_info);
+ SET_INFO((StgInd*)R1.p,&stg_IND_info);
#endif /* TICKY_TICKY */
R1.p = (P_) ((StgInd*)R1.p)->indirectee;
# ifdef PROFILING
# error Profiling and ticky-ticky do not mix at present!
# endif /* PROFILING */
- SET_INFO((StgInd*)R1.p,&IND_OLDGEN_info);
+ SET_INFO((StgInd*)R1.p,&stg_IND_OLDGEN_info);
#endif /* TICKY_TICKY */
R1.p = (P_) ((StgInd*)R1.p)->indirectee;
}
/* -----------------------------------------------------------------------------
- Entry code for CAFs
-
- This code assumes R1 is in a register for now.
- -------------------------------------------------------------------------- */
-
-INFO_TABLE(stg_CAF_UNENTERED_info,stg_CAF_UNENTERED_entry,1,3,CAF_UNENTERED,,EF_,0,0);
-STGFUN(stg_CAF_UNENTERED_entry)
-{
- FB_
- /* ToDo: implement directly in GHC */
- Sp -= 1;
- Sp[0] = R1.w;
- JMP_(stg_yield_to_interpreter);
- FE_
-}
-
-/* 0,4 is entirely bogus; _do not_ rely on this info */
-INFO_TABLE(stg_CAF_ENTERED_info,stg_CAF_ENTERED_entry,0,4,CAF_ENTERED,,EF_,0,0);
-STGFUN(stg_CAF_ENTERED_entry)
-{
- FB_
- R1.p = (P_) ((StgCAF*)R1.p)->value; /* just a fancy indirection */
- TICK_ENT_VIA_NODE();
- JMP_(GET_ENTRY(R1.cl));
- FE_
-}
-
-/* -----------------------------------------------------------------------------
Entry code for a black hole.
Entering a black hole normally causes a cyclic data dependency, but
bdescr *bd = Bdescr(R1.p);
if (bd->back != (bdescr *)BaseReg) {
if (bd->gen->no >= 1 || bd->step->no >= 1) {
- CMPXCHG(R1.cl->header.info, &BLACKHOLE_info, &WHITEHOLE_info);
+ CMPXCHG(R1.cl->header.info, &stg_BLACKHOLE_info, &stg_WHITEHOLE_info);
} else {
EXTFUN_RTS(stg_gc_enter_1_hponly);
JMP_(stg_gc_enter_1_hponly);
#endif
TICK_ENT_BH();
- /* Put ourselves on the blocking queue for this black hole */
+ // Put ourselves on the blocking queue for this black hole
#if defined(GRAN) || defined(PAR)
- /* in fact, only difference is the type of the end-of-queue marker! */
+ // in fact, only difference is the type of the end-of-queue marker!
CurrentTSO->link = END_BQ_QUEUE;
((StgBlockingQueue *)R1.p)->blocking_queue = (StgBlockingQueueElement *)CurrentTSO;
#else
CurrentTSO->link = END_TSO_QUEUE;
((StgBlockingQueue *)R1.p)->blocking_queue = CurrentTSO;
#endif
- /* jot down why and on what closure we are blocked */
+ // jot down why and on what closure we are blocked
CurrentTSO->why_blocked = BlockedOnBlackHole;
CurrentTSO->block_info.closure = R1.cl;
- /* closure is mutable since something has just been added to its BQ */
- recordMutable((StgMutClosure *)R1.cl);
- /* Change the BLACKHOLE into a BLACKHOLE_BQ */
+
+ // Change the CAF_BLACKHOLE into a BLACKHOLE_BQ_STATIC
((StgBlockingQueue *)R1.p)->header.info = &stg_BLACKHOLE_BQ_info;
- /* PAR: dumping of event now done in blockThread -- HWL */
+ // closure is mutable since something has just been added to its BQ
+ recordMutable((StgMutClosure *)R1.cl);
- /* stg_gen_block is too heavyweight, use a specialised one */
- BLOCK_NP(1);
+ // PAR: dumping of event now done in blockThread -- HWL
+ // stg_gen_block is too heavyweight, use a specialised one
+ BLOCK_NP(1);
FE_
}
bdescr *bd = Bdescr(R1.p);
if (bd->back != (bdescr *)BaseReg) {
if (bd->gen->no >= 1 || bd->step->no >= 1) {
- CMPXCHG(R1.cl->header.info, &BLACKHOLE_info, &WHITEHOLE_info);
+ CMPXCHG(R1.cl->header.info, &stg_BLACKHOLE_info, &stg_WHITEHOLE_info);
} else {
EXTFUN_RTS(stg_gc_enter_1_hponly);
JMP_(stg_gc_enter_1_hponly);
{
bdescr *bd = Bdescr(R1.p);
if (bd->back != (bdescr *)BaseReg) {
- if (bd->gen->no >= 1 || bd->step->no >= 1) {
- CMPXCHG(R1.cl->header.info, &CAF_BLACKHOLE_info, &WHITEHOLE_info);
+ if (bd->gen_no >= 1 || bd->step->no >= 1) {
+ CMPXCHG(R1.cl->header.info, &stg_CAF_BLACKHOLE_info, &stg_WHITEHOLE_info);
} else {
EXTFUN_RTS(stg_gc_enter_1_hponly);
JMP_(stg_gc_enter_1_hponly);
TICK_ENT_BH();
- /* Put ourselves on the blocking queue for this black hole */
+ // Put ourselves on the blocking queue for this black hole
#if defined(GRAN) || defined(PAR)
- /* in fact, only difference is the type of the end-of-queue marker! */
+ // in fact, only difference is the type of the end-of-queue marker!
CurrentTSO->link = END_BQ_QUEUE;
((StgBlockingQueue *)R1.p)->blocking_queue = (StgBlockingQueueElement *)CurrentTSO;
#else
CurrentTSO->link = END_TSO_QUEUE;
((StgBlockingQueue *)R1.p)->blocking_queue = CurrentTSO;
#endif
- /* jot down why and on what closure we are blocked */
+ // jot down why and on what closure we are blocked
CurrentTSO->why_blocked = BlockedOnBlackHole;
CurrentTSO->block_info.closure = R1.cl;
- /* closure is mutable since something has just been added to its BQ */
- recordMutable((StgMutClosure *)R1.cl);
- /* Change the CAF_BLACKHOLE into a BLACKHOLE_BQ */
+
+ // Change the CAF_BLACKHOLE into a BLACKHOLE_BQ_STATIC
((StgBlockingQueue *)R1.p)->header.info = &stg_BLACKHOLE_BQ_info;
- /* PAR: dumping of event now done in blockThread -- HWL */
+ // closure is mutable since something has just been added to its BQ
+ recordMutable((StgMutClosure *)R1.cl);
- /* stg_gen_block is too heavyweight, use a specialised one */
+ // PAR: dumping of event now done in blockThread -- HWL
+
+ // stg_gen_block is too heavyweight, use a specialised one
BLOCK_NP(1);
FE_
}
SET_STATIC_HDR(stg_END_MUT_LIST_closure,stg_END_MUT_LIST_info,0/*CC*/,,EI_)
, /*payload*/{} };
-INFO_TABLE(stg_MUT_CONS_info, stg_MUT_CONS_entry, 1, 1, MUT_VAR, , EF_, 0, 0);
+INFO_TABLE(stg_MUT_CONS_info, stg_MUT_CONS_entry, 1, 1, MUT_CONS, , EF_, 0, 0);
NON_ENTERABLE_ENTRY_CODE(MUT_CONS);
/* -----------------------------------------------------------------------------
}
#else
INFO_TABLE_SRT_BITMAP(stg_forceIO_ret_info,stg_forceIO_ret_entry,0,0,0,0,RET_SMALL,,EF_,0,0);
-STGFUN(forceIO_ret_entry)
+STGFUN(stg_forceIO_ret_entry)
{
StgClosure *rval;
FB_
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