X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fincludes%2FInfoTables.h;h=1aff7681f75e80955826cbf9a3357e49c0cb72f9;hb=6e5df3a4551b8d8b83e936b3f7b52edfc778ca8a;hp=e99dabb25815a3b8e5a940cac67882fa20a71e51;hpb=21462c00b3241f15de3b145ac92ee5b266b5733a;p=ghc-hetmet.git diff --git a/ghc/includes/InfoTables.h b/ghc/includes/InfoTables.h index e99dabb..1aff768 100644 --- a/ghc/includes/InfoTables.h +++ b/ghc/includes/InfoTables.h @@ -1,5 +1,5 @@ /* ---------------------------------------------------------------------------- - * $Id: InfoTables.h,v 1.12 1999/03/02 19:44:10 sof Exp $ + * $Id: InfoTables.h,v 1.27 2002/05/14 08:15:49 matthewc Exp $ * * (c) The GHC Team, 1998-1999 * @@ -14,45 +14,80 @@ Profiling info -------------------------------------------------------------------------- */ -#ifdef PROFILING - -#define PROF_INFO_WORDS n - typedef struct { - /* nothing yet */ + char *closure_type; + char *closure_desc; } StgProfInfo; -#else /* !PROFILING */ - -#define PROF_INFO_WORDS 0 - -typedef struct { - /* empty */ -} StgProfInfo; - -#endif /* PROFILING */ - /* ----------------------------------------------------------------------------- Parallelism info -------------------------------------------------------------------------- */ -#ifdef PAR +#if 0 && (defined(PAR) || defined(GRAN)) -#define PAR_INFO_WORDS 0 +// CURRENTLY UNUSED +// ToDo: use this in StgInfoTable (mutually recursive) -- HWL typedef struct { - /* empty */ + StgInfoTable *rbh_infoptr; /* infoptr to the RBH */ } StgParInfo; -#else /* !PAR */ +#endif /* 0 */ -#define PAR_INFO_WORDS 0 +/* + Copied from ghc-0.29; ToDo: check this code -- HWL -typedef struct { - /* empty */ -} StgParInfo; + In the parallel system, all updatable closures have corresponding + revertible black holes. When we are assembly-mangling, we guarantee + that the revertible black hole code precedes the normal entry code, so + that the RBH info table resides at a fixed offset from the normal info + table. Otherwise, we add the RBH info table pointer to the end of the + normal info table and vice versa. + + Currently has to use a !RBH_MAGIC_OFFSET setting. + Still todo: init of par.infoptr field in all infotables!! +*/ + +#if defined(PAR) || defined(GRAN) + +# ifdef RBH_MAGIC_OFFSET + +# error magic offset not yet implemented + +# define RBH_INFO_WORDS 0 +# define INCLUDE_RBH_INFO(infoptr) -#endif /* PAR */ +# define RBH_INFOPTR(infoptr) (((P_)infoptr) - RBH_MAGIC_OFFSET) +# define REVERT_INFOPTR(infoptr) (((P_)infoptr) + RBH_MAGIC_OFFSET) + +# else + +# define RBH_INFO_WORDS 1 +# define INCLUDE_RBH_INFO(info) rbh_infoptr : &(info) + +# define RBH_INFOPTR(infoptr) (((StgInfoTable *)(infoptr))->rbh_infoptr) +# define REVERT_INFOPTR(infoptr) (((StgInfoTable *)(infoptr))->rbh_infoptr) + +# endif + +/* see ParallelRts.h */ +// EXTFUN(RBH_entry); +//StgClosure *convertToRBH(StgClosure *closure); +//#if defined(GRAN) +//void convertFromRBH(StgClosure *closure); +//#elif defined(PAR) +//void convertToFetchMe(StgPtr closure, globalAddr *ga); +//#endif + +#endif + +/* ----------------------------------------------------------------------------- + Ticky info + -------------------------------------------------------------------------- */ + +typedef struct { + /* empty */ +} StgTickyInfo; /* ----------------------------------------------------------------------------- Debugging info @@ -60,16 +95,12 @@ typedef struct { #ifdef DEBUG_CLOSURE -#define DEBUG_INFO_WORDS n - typedef struct { ... whatever ... } StgDebugInfo; #else /* !DEBUG_CLOSURE */ -#define DEBUG_INFO_WORDS 0 - typedef struct { /* empty */ } StgDebugInfo; @@ -77,107 +108,20 @@ typedef struct { #endif /* DEBUG_CLOSURE */ /* ----------------------------------------------------------------------------- - Closure Types - - If you add or delete any closure types, don't forget to update - ClosureTypes.h for the native code generator. This is a temporary - measure (I hope). + Closure flags -------------------------------------------------------------------------- */ -typedef enum { - - INVALID_OBJECT /* Object tag 0 raises an internal error */ - - , CONSTR - , CONSTR_1_0 - , CONSTR_0_1 - , CONSTR_2_0 - , CONSTR_1_1 - , CONSTR_0_2 - , CONSTR_INTLIKE - , CONSTR_CHARLIKE - , CONSTR_STATIC - , CONSTR_NOCAF_STATIC - - , FUN - , FUN_1_0 - , FUN_0_1 - , FUN_2_0 - , FUN_1_1 - , FUN_0_2 - , FUN_STATIC - - , THUNK - , THUNK_1_0 - , THUNK_0_1 - , THUNK_2_0 - , THUNK_1_1 - , THUNK_0_2 - , THUNK_STATIC - , THUNK_SELECTOR - - , BCO - , AP_UPD - - , PAP /* should be called AP_NUPD */ - - , IND - , IND_OLDGEN - , IND_PERM - , IND_OLDGEN_PERM - , IND_STATIC - - , CAF_UNENTERED - , CAF_ENTERED - , CAF_BLACKHOLE - - , RET_BCO - , RET_SMALL - , RET_VEC_SMALL - , RET_BIG - , RET_VEC_BIG - , RET_DYN - , UPDATE_FRAME - , CATCH_FRAME - , STOP_FRAME - , SEQ_FRAME - - , BLACKHOLE - , BLACKHOLE_BQ - - , MVAR - - , ARR_WORDS - , MUT_ARR_PTRS - , MUT_ARR_PTRS_FROZEN - - , MUT_VAR - - , WEAK - , FOREIGN - , STABLE_NAME - - , TSO - - , BLOCKED_FETCH - , FETCH_ME - - , EVACUATED - - , N_CLOSURE_TYPES /* number of distinct closure types */ - -} StgClosureType; - /* The type flags provide quick access to certain properties of a closure. */ -#define _HNF (1<<0) /* head normal form? */ +#define _HNF (1<<0) /* head normal form? */ #define _BTM (1<<1) /* bitmap-style layout? */ -#define _NS (1<<2) /* non-sparkable */ -#define _STA (1<<3) /* static? */ -#define _THU (1<<4) /* thunk? */ -#define _MUT (1<<5) /* mutable? */ -#define _UPT (1<<6) /* unpointed? */ -#define _SRT (1<<7) /* has an SRT? */ +#define _NS (1<<2) /* non-sparkable */ +#define _STA (1<<3) /* static? */ +#define _THU (1<<4) /* thunk? */ +#define _MUT (1<<5) /* mutable? */ +#define _UPT (1<<6) /* unpointed? */ +#define _SRT (1<<7) /* has an SRT? */ +#define _IND (1<<8) /* is an indirection? */ #define isSTATIC(flags) ((flags) &_STA) #define isMUTABLE(flags) ((flags) &_MUT) @@ -186,70 +130,33 @@ typedef enum { #define isUNPOINTED(flags) ((flags) &_UPT) #define hasSRT(flags) ((flags) &_SRT) -#define closure_STATIC(closure) ( get_itbl(closure)->flags & _STA) -#define closure_SHOULD_SPARK(closure) (!(get_itbl(closure)->flags & _NS)) -#define closure_MUTABLE(closure) ( get_itbl(closure)->flags & _MUT) -#define closure_UNPOINTED(closure) ( get_itbl(closure)->flags & _UPT) - -/* HNF BTM NS STA THU MUT UPT SRT */ - -#define FLAGS_CONSTR (_HNF| _NS ) -#define FLAGS_CONSTR_1_0 (_HNF| _NS ) -#define FLAGS_CONSTR_0_1 (_HNF| _NS ) -#define FLAGS_CONSTR_2_0 (_HNF| _NS ) -#define FLAGS_CONSTR_1_1 (_HNF| _NS ) -#define FLAGS_CONSTR_0_2 (_HNF| _NS ) -#define FLAGS_CONSTR_STATIC (_HNF| _NS|_STA ) -#define FLAGS_CONSTR_NOCAF_STATIC (_HNF| _NS|_STA ) -#define FLAGS_FUN (_HNF| _NS| _SRT ) -#define FLAGS_FUN_1_0 (_HNF| _NS ) -#define FLAGS_FUN_0_1 (_HNF| _NS ) -#define FLAGS_FUN_2_0 (_HNF| _NS ) -#define FLAGS_FUN_1_1 (_HNF| _NS ) -#define FLAGS_FUN_0_2 (_HNF| _NS ) -#define FLAGS_FUN_STATIC (_HNF| _NS|_STA| _SRT ) -#define FLAGS_THUNK ( _BTM| _THU| _SRT ) -#define FLAGS_THUNK_1_0 ( _BTM| _THU| _SRT ) -#define FLAGS_THUNK_0_1 ( _BTM| _THU| _SRT ) -#define FLAGS_THUNK_2_0 ( _BTM| _THU| _SRT ) -#define FLAGS_THUNK_1_1 ( _BTM| _THU| _SRT ) -#define FLAGS_THUNK_0_2 ( _BTM| _THU| _SRT ) -#define FLAGS_THUNK_STATIC ( _BTM| _STA|_THU| _SRT ) -#define FLAGS_THUNK_SELECTOR ( _BTM| _THU| _SRT ) -#define FLAGS_BCO (_HNF| _NS ) -#define FLAGS_CAF_UNENTERED 0 /* Do we still use these? */ -#define FLAGS_CAF_ENTERED 0 -#define FLAGS_CAF_BLACKHOLE ( _BTM|_NS| _UPT ) -#define FLAGS_AP_UPD ( _BTM| _THU ) -#define FLAGS_PAP (_HNF| _NS ) -#define FLAGS_IND 0 -#define FLAGS_IND_OLDGEN 0 -#define FLAGS_IND_PERM 0 -#define FLAGS_IND_OLDGEN_PERM 0 -#define FLAGS_IND_STATIC ( _STA ) -#define FLAGS_EVACUATED 0 -#define FLAGS_ARR_WORDS (_HNF| _NS| _UPT ) -#define FLAGS_MUT_ARR_PTRS (_HNF| _NS| _MUT|_UPT ) -#define FLAGS_MUT_ARR_PTRS_FROZEN (_HNF| _NS| _MUT|_UPT ) -#define FLAGS_MUT_VAR (_HNF| _NS| _MUT|_UPT ) -#define FLAGS_FOREIGN (_HNF| _NS| _UPT ) -#define FLAGS_STABLE_NAME (_HNF| _NS| _UPT ) -#define FLAGS_WEAK (_HNF| _NS| _UPT ) -#define FLAGS_BLACKHOLE ( _NS| _UPT ) -#define FLAGS_BLACKHOLE_BQ ( _NS| _MUT|_UPT ) -#define FLAGS_MVAR (_HNF| _NS| _MUT|_UPT ) -#define FLAGS_FETCH_ME (_HNF| _NS ) -#define FLAGS_TSO (_HNF| _NS| _MUT|_UPT ) -#define FLAGS_RET_BCO ( _BTM ) -#define FLAGS_RET_SMALL ( _BTM| _SRT) -#define FLAGS_RET_VEC_SMALL ( _BTM| _SRT) -#define FLAGS_RET_BIG ( _SRT) -#define FLAGS_RET_VEC_BIG ( _SRT) -#define FLAGS_RET_DYN ( _SRT) -#define FLAGS_CATCH_FRAME ( _BTM ) -#define FLAGS_STOP_FRAME ( _BTM ) -#define FLAGS_SEQ_FRAME ( _BTM ) -#define FLAGS_UPDATE_FRAME ( _BTM ) +extern StgWord16 closure_flags[]; + +#define closureFlags(c) (closure_flags[get_itbl(c)->type]) + +#define closure_HNF(c) ( closureFlags(c) & _HNF) +#define closure_BITMAP(c) ( closureFlags(c) & _BTM) +#define closure_NON_SPARK(c) ( (closureFlags(c) & _NS)) +#define closure_SHOULD_SPARK(c) (!(closureFlags(c) & _NS)) +#define closure_STATIC(c) ( closureFlags(c) & _STA) +#define closure_THUNK(c) ( closureFlags(c) & _THU) +#define closure_MUTABLE(c) ( closureFlags(c) & _MUT) +#define closure_UNPOINTED(c) ( closureFlags(c) & _UPT) +#define closure_SRT(c) ( closureFlags(c) & _SRT) +#define closure_IND(c) ( closureFlags(c) & _IND) + +/* same as above but for info-ptr rather than closure */ +#define ipFlags(ip) (closure_flags[ip->type]) + +#define ip_HNF(ip) ( ipFlags(ip) & _HNF) +#define ip_BITMAP(ip) ( ipFlags(ip) & _BTM) +#define ip_SHOULD_SPARK(ip) (!(ipFlags(ip) & _NS)) +#define ip_STATIC(ip) ( ipFlags(ip) & _STA) +#define ip_THUNK(ip) ( ipFlags(ip) & _THU) +#define ip_MUTABLE(ip) ( ipFlags(ip) & _MUT) +#define ip_UNPOINTED(ip) ( ipFlags(ip) & _UPT) +#define ip_SRT(ip) ( ipFlags(ip) & _SRT) +#define ip_IND(ip) ( ipFlags(ip) & _IND) /* ----------------------------------------------------------------------------- Info Tables @@ -262,7 +169,7 @@ typedef enum { typedef struct { StgWord size; - StgWord bitmap[0]; + StgWord bitmap[FLEXIBLE_ARRAY]; } StgLargeBitmap; /* @@ -273,22 +180,19 @@ typedef struct { */ typedef union { -#if SIZEOF_VOID_P == 8 struct { +#if SIZEOF_VOID_P == 8 StgWord32 ptrs; /* number of pointers */ StgWord32 nptrs; /* number of non-pointers */ - } payload; #else - struct { StgWord16 ptrs; /* number of pointers */ StgWord16 nptrs; /* number of non-pointers */ +#endif } payload; StgWord bitmap; /* bit pattern, 1 = pointer, 0 = non-pointer */ StgWord selector_offset; /* used in THUNK_SELECTORs */ StgLargeBitmap* large_bitmap; /* pointer to large bitmap structure */ - -#endif } StgClosureInfo; @@ -301,33 +205,55 @@ typedef union { typedef StgClosure* StgSRT[]; +/* + * The entry code pointer must be the first word of an info table. + * See the comment in ghc/rts/Storage.h (Plan C) for details. + */ typedef struct _StgInfoTable { +#ifndef TABLES_NEXT_TO_CODE + StgFunPtr entry; +#endif StgSRT *srt; /* pointer to the SRT table */ -#ifdef PAR - StgParInfo par; +#if defined(PAR) || defined(GRAN) + struct _StgInfoTable *rbh_infoptr; #endif #ifdef PROFILING StgProfInfo prof; #endif +#ifdef TICKY + StgTickyInfo ticky; +#endif #ifdef DEBUG_CLOSURE StgDebugInfo debug; #endif StgClosureInfo layout; /* closure layout info (pointer-sized) */ #if SIZEOF_VOID_P == 8 - StgWord16 flags; /* } */ - StgClosureType type : 16; /* } These 4 elements fit into 64 bits */ + StgWord32 type; /* } These 2 elements fit into 64 bits */ StgWord32 srt_len; /* } */ #else - StgWord8 flags; /* } */ - StgClosureType type : 8; /* } These 4 elements fit into 32 bits */ - StgWord16 srt_len; /* } */ + StgWord type : 16; /* } These 2 elements fit into 32 bits */ + StgWord srt_len : 16; /* } */ #endif -#if USE_MINIINTERPRETER - StgFunPtr (*vector)[]; - StgFunPtr entry; +#ifdef TABLES_NEXT_TO_CODE + StgCode code[FLEXIBLE_ARRAY]; #else - StgCode code[0]; + StgFunPtr vector[FLEXIBLE_ARRAY]; #endif } StgInfoTable; +/* Info tables are read-only, therefore we uniformly declare them with + * C's const attribute. This isn't just a nice thing to do: it's + * necessary because the garbage collector has to distinguish between + * closure pointers and info table pointers when traversing the + * stack. We distinguish the two by checking whether the pointer is + * into text-space or not. + */ + +#if ia64_TARGET_ARCH +/* We need to give the compiler a gentle hint to put it in text-space */ +#define INFO_TBL_CONST const __attribute__((section (".text"))) +#else +#define INFO_TBL_CONST const +#endif + #endif /* INFOTABLES_H */