/* -----------------------------------------------------------------------------
- * $Id: Assembler.h,v 1.12 1999/11/29 18:59:23 sewardj Exp $
+ * $Id: Assembler.h,v 1.13 2000/04/27 16:35:29 sewardj Exp $
*
* (c) The GHC Team 1994-1998.
*
typedef double AsmDouble;
typedef char* AsmString;
+typedef int AsmSp; /* stack offset */
+typedef int AsmPc; /* program counter */
+typedef AsmSp AsmVar; /* offset of a Var on the stack */
+
/* I want to #include this file into the file that defines the
* functions but I don't want to expose the structures that
* these types point to.
* This hack is the best I could think of. Surely there's a better way?
*/
#ifdef INSIDE_ASSEMBLER_C
-typedef struct AsmObject_ *AsmObject;
-typedef struct AsmBCO_ *AsmBCO;
-typedef struct AsmCAF_ *AsmCAF;
-typedef struct AsmCon_ *AsmCon;
-typedef StgInfoTable *AsmInfo;
-typedef StgClosure *AsmClosure;
-typedef Instr AsmInstr;
+/* these types are defined in Assembler.c */
+typedef
+ enum {
+ Asm_RefNoOp, /* Pointer which needs no further messing with */
+ Asm_RefObject, /* Reference to malloc'd AsmCAF/AsmBCO/AsmCon */
+ Asm_RefHugs, /* Reference to Hugs name or tycon table */
+
+ Asm_NonPtrWord, /* A non-pointer word */
+ Asm_Insn8, /* One BCO insn byte */
+ }
+ Asm_Kind;
+
+typedef
+ struct {
+ Asm_Kind kind;
+ StgWord val; /* StgWord is allegedly big enough to also hold
+ a pointer, on all platforms */
+ }
+ Asm_Entity;
+
+
+ struct AsmObject_ {
+ unsigned int magic;
+ struct AsmObject_* next;
+ enum { Asm_BCO, Asm_CAF, Asm_Con } kind;
+ int sizeEntities;
+ int usedEntities;
+ Asm_Entity* entities;
+ StgClosure* closure;
+
+ int n_refs; /* number of ptr words */
+ int n_words; /* number of words */
+ int n_insns; /* number of insn BYTES */
+
+ /* AsmCon specifics */
+ StgInfoTable* itbl;
+
+ /* AsmBCO specifics */
+ int /*StgExpr*/ stgexpr; /* stg tree for debugging */
+ AsmSp sp; /* simulated sp */
+ AsmSp max_sp; /* high-tide of sp */
+ Instr lastOpc; /* last opcode, for peephole opt */
+ };
+ /* AsmObject_ is only mentioned in Assembler.c; clients use
+ AsmObject/AsmBCO/AsmCAF/AsmCon.
+ */
+
+typedef StgInfoTable* AsmInfo;
+typedef struct AsmObject_* AsmBCO;
+typedef struct AsmObject_* AsmCAF;
+typedef struct AsmObject_* AsmCon;
+typedef struct AsmObject_* AsmObject;
+typedef Instr AsmInstr;
#else
/* the types we export are totally opaque */
-typedef void *AsmObject;
-typedef void *AsmBCO;
-typedef void *AsmCAF;
-typedef void *AsmCon;
-typedef void *AsmInfo;
-typedef void *AsmClosure;
-typedef unsigned int AsmInstr;
+typedef void* AsmObject;
+typedef void* AsmBCO;
+typedef void* AsmCAF;
+typedef void* AsmCon;
+typedef void* AsmInfo;
+typedef void* AsmClosure;
+typedef unsigned int AsmInstr;
#endif
-typedef int AsmSp; /* stack offset */
-typedef int AsmPc; /* program counter */
-typedef AsmSp AsmVar; /* offset of a Var on the stack */
+
/* --------------------------------------------------------------------------
* "Types" used within the assembler
} AsmRep;
/* --------------------------------------------------------------------------
+ * Top-level control of the BCO generation + linking mechanism
+ * ------------------------------------------------------------------------*/
+
+extern void asmInitialise ( void );
+extern void asmAllocateHeapSpace ( void );
+extern void asmCopyAndLink ( void );
+extern void asmShutdown ( void );
+
+extern void* /* StgClosure* */ asmGetClosureOfObject ( AsmObject );
+
+/* --------------------------------------------------------------------------
* Allocating (top level) heap objects
* ------------------------------------------------------------------------*/
extern AsmBCO asmBeginContinuation ( AsmSp sp, int /*List*/ alts );
extern void asmEndContinuation ( AsmBCO bco );
-extern AsmObject asmMkObject ( AsmClosure c );
-
extern AsmCAF asmBeginCAF ( void );
-extern void asmEndCAF ( AsmCAF caf, AsmBCO body );
+extern void asmEndCAF ( AsmCAF caf );
extern AsmInfo asmMkInfo ( AsmNat tag, AsmNat ptrs );
extern AsmCon asmBeginCon ( AsmInfo info );
* in right to left order.
*/
extern void asmAddPtr ( AsmObject obj, AsmObject arg );
-
-extern int asmObjectHasClosure( AsmObject obj );
-extern AsmClosure asmClosureOfObject ( AsmObject obj );
-extern void asmMarkObject ( AsmObject obj );
-
extern int asmRepSizeW ( AsmRep rep );
/* --------------------------------------------------------------------------
AsmSp base );
extern char* asmGetPrimopName ( AsmPrim* p );
-extern AsmBCO asm_BCO_catch ( void );
-extern AsmBCO asm_BCO_raise ( void );
-extern AsmBCO asm_BCO_seq ( void );
-extern AsmBCO asm_BCO_takeMVar ( void );
+extern void* /* StgBCO* */ asm_BCO_catch ( void );
+extern void* /* StgBCO* */ asm_BCO_raise ( void );
+extern void* /* StgBCO* */ asm_BCO_seq ( void );
+extern void* /* StgBCO* */ asm_BCO_takeMVar ( void );
/* --------------------------------------------------------------------------
* Heap manipulation
* ------------------------------------------------------------------------*/
-extern AsmVar asmClosure ( AsmBCO bco, AsmObject p );
-extern AsmVar asmGHCClosure ( AsmBCO bco, AsmObject p );
+extern AsmVar asmPushRefHugs ( AsmBCO bco, int /*Name*/ n );
+extern AsmVar asmPushRefObject ( AsmBCO bco, AsmObject p );
+extern AsmVar asmPushRefNoOp ( AsmBCO bco, StgPtr p );
+
+extern void asmAddRefObject ( AsmObject obj, AsmObject p );
+extern void asmAddRefNoOp ( AsmObject obj, StgPtr p );
extern AsmVar asmAllocCONSTR ( AsmBCO bco, AsmInfo info );
extern AsmSp asmBeginPack ( AsmBCO bco );
-extern void asmEndPack ( AsmBCO bco, AsmVar v, AsmSp start, AsmInfo info );
+extern void asmEndPack ( AsmBCO bco, AsmVar v, AsmSp start,
+ AsmInfo info );
extern void asmBeginUnpack ( AsmBCO bco );
extern void asmEndUnpack ( AsmBCO bco );
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