* Copyright (c) 1994-1998.
*
* $RCSfile: Assembler.c,v $
- * $Revision: 1.8 $
- * $Date: 1999/04/27 10:07:15 $
+ * $Revision: 1.14 $
+ * $Date: 1999/11/08 15:30:32 $
*
* This module provides functions to construct BCOs and other closures
* required by the bytecode compiler.
#include "Bytecodes.h"
#include "Printer.h"
#include "Disassembler.h"
-#include "Evaluator.h"
#include "StgMiscClosures.h"
#include "Storage.h"
+#include "Schedule.h"
+#include "Evaluator.h"
#define INSIDE_ASSEMBLER_C
#include "Assembler.h"
bco->hp = hp;
}
-static void resetSp( AsmBCO bco, AsmSp sp )
+static void setSp( AsmBCO bco, AsmSp sp )
{
bco->max_sp = stg_max(bco->sp,bco->max_sp);
bco->sp = sp;
+ bco->max_sp = stg_max(bco->sp,bco->max_sp);
+}
+
+static void incSp ( AsmBCO bco, int sp_delta )
+{
+ bco->max_sp = stg_max(bco->sp,bco->max_sp);
+ bco->sp += sp_delta;
+ bco->max_sp = stg_max(bco->sp,bco->max_sp);
+}
+
+static void decSp ( AsmBCO bco, int sp_delta )
+{
+ bco->max_sp = stg_max(bco->sp,bco->max_sp);
+ bco->sp -= sp_delta;
+ bco->max_sp = stg_max(bco->sp,bco->max_sp);
}
/* --------------------------------------------------------------------------
{
nat p = bco->object.ptrs.len;
nat np = bco->nps.len;
- nat is = bco->is.len + 2; /* 2 for stack check */
+ nat is = bco->is.len + (bco->max_sp <= 255 ? 2 : 3); /* 2 or 3 for stack check */
StgClosure* c = asmAlloc(BCO_sizeW(p,np,is));
StgBCO* o = stgCast(StgBCO*,c);
nat j = 0;
bco->max_sp = stg_max(bco->sp,bco->max_sp);
bco->max_hp = stg_max(bco->hp,bco->max_hp);
- bcoInstr(o,j++) = i_STK_CHECK;
- bcoInstr(o,j++) = bco->max_sp;
+
+ ASSERT(bco->max_sp <= 65535);
+ if (bco->max_sp <= 255) {
+ bcoInstr(o,j++) = i_STK_CHECK;
+ bcoInstr(o,j++) = bco->max_sp;
+ } else {
+ bcoInstr(o,j++) = i_STK_CHECK_big;
+ bcoInstr(o,j++) = bco->max_sp / 256;
+ bcoInstr(o,j++) = bco->max_sp % 256;
+ }
+
mapQueue(Instrs, StgWord8, bco->is, bcoInstr(o,j++) = x);
ASSERT(j == is);
}
case ADDR_REP: return sizeofW(StgWord) + sizeofW(StgAddr);
case FLOAT_REP: return sizeofW(StgWord) + sizeofW(StgFloat);
case DOUBLE_REP: return sizeofW(StgWord) + sizeofW(StgDouble);
-#ifdef PROVIDE_STABLE
case STABLE_REP: return sizeofW(StgWord) + sizeofW(StgWord);
-#endif
case INTEGER_REP:
#ifdef PROVIDE_WEAK
emiti_16(bco,i_VAR_DOUBLE_big,arg1);
}
+static void emit_i_VAR_STABLE ( AsmBCO bco, int arg1 )
+{
+ ASSERT(arg1 >= 0);
+ if (arg1 < 256)
+ emiti_8 (bco,i_VAR_STABLE, arg1); else
+ emiti_16(bco,i_VAR_STABLE_big,arg1);
+}
+
static void emit_i_VAR ( AsmBCO bco, int arg1 )
{
ASSERT(arg1 >= 0);
AsmVar asmBind ( AsmBCO bco, AsmRep rep )
{
- bco->sp += repSizeW(rep);
+ incSp(bco,repSizeW(rep));
return bco->sp;
}
if (rep == VOID_REP) {
emiti_(bco,i_VOID);
- bco->sp += repSizeW(rep);
+ incSp(bco,repSizeW(rep));
return;
}
case DOUBLE_REP:
emit_i_VAR_DOUBLE(bco,offset);
break;
-#ifdef PROVIDE_STABLE
case STABLE_REP:
emit_i_VAR_STABLE(bco,offset);
break;
-#endif
case INTEGER_REP:
#ifdef PROVIDE_WEAK
default:
barf("asmVar %d",rep);
}
- bco->sp += repSizeW(rep);
+ incSp(bco,repSizeW(rep));
}
/* --------------------------------------------------------------------------
ASSERT(x >= 0 && y >= 0);
if (y != 0) {
emit_i_SLIDE(bco,x,y);
- bco->sp -= sp1 - sp2;
+ decSp(bco,sp1 - sp2);
}
emiti_(bco,i_ENTER);
+ decSp(bco,sizeofW(StgPtr));
}
/* --------------------------------------------------------------------------
emiti_(bco,i_PACK_DOUBLE);
grabHpNonUpd(bco,Dzh_sizeW);
break;
-#ifdef PROVIDE_STABLE
case STABLE_REP:
emiti_(bco,i_PACK_STABLE);
grabHpNonUpd(bco,Stablezh_sizeW);
break;
-#endif
default:
barf("asmBox %d",rep);
}
/* NB: these operations DO pop their arg */
- bco->sp -= repSizeW(rep); /* pop unboxed arg */
- bco->sp += sizeofW(StgPtr); /* push box */
+ decSp(bco, repSizeW(rep)); /* pop unboxed arg */
+ incSp(bco, sizeofW(StgPtr)); /* push box */
return bco->sp;
}
case DOUBLE_REP:
emiti_(bco,i_UNPACK_DOUBLE);
break;
-#ifdef PROVIDE_STABLE
case STABLE_REP:
emiti_(bco,i_UNPACK_STABLE);
break;
-#endif
default:
barf("asmUnbox %d",rep);
}
/* NB: these operations DO NOT pop their arg */
- bco->sp += repSizeW(rep); /* push unboxed arg */
+ incSp(bco, repSizeW(rep)); /* push unboxed arg */
return bco->sp;
}
{
emit_i_CONST_INT(bco,bco->nps.len);
asmWords(bco,AsmInt,x);
- bco->sp += repSizeW(INT_REP);
+ incSp(bco, repSizeW(INT_REP));
}
void asmConstInteger( AsmBCO bco, AsmString x )
{
emit_i_CONST_INTEGER(bco,bco->nps.len);
asmWords(bco,AsmString,x);
- bco->sp += repSizeW(INTEGER_REP);
+ incSp(bco, repSizeW(INTEGER_REP));
}
void asmConstAddr( AsmBCO bco, AsmAddr x )
{
emit_i_CONST_ADDR(bco,bco->nps.len);
asmWords(bco,AsmAddr,x);
- bco->sp += repSizeW(ADDR_REP);
+ incSp(bco, repSizeW(ADDR_REP));
}
void asmConstWord( AsmBCO bco, AsmWord x )
{
emit_i_CONST_INT(bco,bco->nps.len);
asmWords(bco,AsmWord,(AsmInt)x);
- bco->sp += repSizeW(WORD_REP);
+ incSp(bco, repSizeW(WORD_REP));
}
void asmConstChar( AsmBCO bco, AsmChar x )
{
emit_i_CONST_CHAR(bco,bco->nps.len);
asmWords(bco,AsmChar,x);
- bco->sp += repSizeW(CHAR_REP);
+ incSp(bco, repSizeW(CHAR_REP));
}
void asmConstFloat( AsmBCO bco, AsmFloat x )
{
emit_i_CONST_FLOAT(bco,bco->nps.len);
asmWords(bco,AsmFloat,x);
- bco->sp += repSizeW(FLOAT_REP);
+ incSp(bco, repSizeW(FLOAT_REP));
}
void asmConstDouble( AsmBCO bco, AsmDouble x )
{
emit_i_CONST_DOUBLE(bco,bco->nps.len);
asmWords(bco,AsmDouble,x);
- bco->sp += repSizeW(DOUBLE_REP);
+ incSp(bco, repSizeW(DOUBLE_REP));
}
/* --------------------------------------------------------------------------
{
emit_i_RETADDR(bco,bco->object.ptrs.len);
asmPtr(bco,&(ret_addr->object));
- bco->sp += 2 * sizeofW(StgPtr);
+ incSp(bco, 2 * sizeofW(StgPtr));
return bco->sp;
}
AsmBCO asmBeginContinuation ( AsmSp sp, int /*List*/ alts )
{
AsmBCO bco = asmBeginBCO(alts);
- bco->sp = sp;
+ setSp(bco, sp);
return bco;
}
void asmEndAlt( AsmBCO bco, AsmSp sp )
{
- resetSp(bco,sp);
+ setSp(bco,sp);
}
AsmPc asmTest( AsmBCO bco, AsmWord tag )
asmVar(bco,v,INT_REP);
asmConstInt(bco,x);
emiti_16(bco,i_TEST_INT,0);
- bco->sp -= 2*repSizeW(INT_REP);
+ decSp(bco, 2*repSizeW(INT_REP));
return bco->is.len;
}
void asmEndPrim( AsmBCO bco, const AsmPrim* prim, AsmSp base )
{
emiti_8(bco,prim->prefix,prim->opcode);
- bco->sp = base;
+ setSp(bco, base);
}
/* Hugs used to let you add arbitrary primops with arbitrary types
, { "primIndexAddrOffAddr", "AI", "A", MONAD_Id, i_PRIMOP1, i_indexAddrOffAddr }
, { "primIndexFloatOffAddr", "AI", "F", MONAD_Id, i_PRIMOP1, i_indexFloatOffAddr }
, { "primIndexDoubleOffAddr", "AI", "D", MONAD_Id, i_PRIMOP1, i_indexDoubleOffAddr }
-#ifdef PROVIDE_STABLE
, { "primIndexStableOffAddr", "AI", "s", MONAD_Id, i_PRIMOP1, i_indexStableOffAddr }
-#endif
+
+ /* Stable# operations */
+ , { "primIntToStablePtr", "I", "s", MONAD_Id, i_PRIMOP1, i_intToStable }
+ , { "primStablePtrToInt", "s", "I", MONAD_Id, i_PRIMOP1, i_stableToInt }
/* These ops really ought to be in the IO monad */
, { "primReadCharOffAddr", "AI", "C", MONAD_ST, i_PRIMOP1, i_readCharOffAddr }
, { "primReadAddrOffAddr", "AI", "A", MONAD_ST, i_PRIMOP1, i_readAddrOffAddr }
, { "primReadFloatOffAddr", "AI", "F", MONAD_ST, i_PRIMOP1, i_readFloatOffAddr }
, { "primReadDoubleOffAddr", "AI", "D", MONAD_ST, i_PRIMOP1, i_readDoubleOffAddr }
-#ifdef PROVIDE_STABLE
, { "primReadStableOffAddr", "AI", "s", MONAD_ST, i_PRIMOP1, i_readStableOffAddr }
-#endif
/* These ops really ought to be in the IO monad */
, { "primWriteCharOffAddr", "AIC", "", MONAD_ST, i_PRIMOP1, i_writeCharOffAddr }
, { "primWriteAddrOffAddr", "AIA", "", MONAD_ST, i_PRIMOP1, i_writeAddrOffAddr }
, { "primWriteFloatOffAddr", "AIF", "", MONAD_ST, i_PRIMOP1, i_writeFloatOffAddr }
, { "primWriteDoubleOffAddr", "AID", "", MONAD_ST, i_PRIMOP1, i_writeDoubleOffAddr }
-#ifdef PROVIDE_STABLE
, { "primWriteStableOffAddr", "AIs", "", MONAD_ST, i_PRIMOP1, i_writeStableOffAddr }
-#endif
/* Integer operations */
, { "primCompareInteger", "ZZ", "I", MONAD_Id, i_PRIMOP1, i_compareInteger }
, { "primReadDoubleArray", "mI", "D", MONAD_ST, i_PRIMOP2, i_readDoubleArray }
, { "primIndexDoubleArray", "xI", "D", MONAD_Id, i_PRIMOP2, i_indexDoubleArray }
-#ifdef PROVIDE_STABLE
+#if 0
+#ifdef PROVIDE_STABLE
, { "primWriteStableArray", "mIs", "", MONAD_ST, i_PRIMOP2, i_writeStableArray }
, { "primReadStableArray", "mI", "s", MONAD_ST, i_PRIMOP2, i_readStableArray }
, { "primIndexStableArray", "xI", "s", MONAD_Id, i_PRIMOP2, i_indexStableArray }
#endif
-
+#endif
/* {new,write,read,index}ForeignObjArray not provided */
, { "primMakeWeak", "bac", "w", MONAD_IO, i_PRIMOP2, i_makeWeak }
, { "primDeRefWeak", "w", "Ia", MONAD_IO, i_PRIMOP2, i_deRefWeak }
#endif
-#ifdef PROVIDE_STABLE
/* StablePtr# operations */
, { "primMakeStablePtr", "a", "s", MONAD_IO, i_PRIMOP2, i_makeStablePtr }
, { "primDeRefStablePtr", "s", "a", MONAD_IO, i_PRIMOP2, i_deRefStablePtr }
, { "primFreeStablePtr", "s", "", MONAD_IO, i_PRIMOP2, i_freeStablePtr }
-#endif
+
+ /* foreign export dynamic support */
+ , { "primCreateAdjThunkARCH", "sAC","A", MONAD_IO, i_PRIMOP2, i_createAdjThunkARCH }
+
+ /* misc handy hacks */
+ , { "primGetArgc", "", "I", MONAD_IO, i_PRIMOP2, i_getArgc }
+ , { "primGetArgv", "I", "A", MONAD_IO, i_PRIMOP2, i_getArgv }
+
#ifdef PROVIDE_PTREQUALITY
, { "primReallyUnsafePtrEquality", "aa", "B",MONAD_Id, i_PRIMOP2, i_reallyUnsafePtrEquality }
#endif
/* Ccall is polyadic - so it's excluded from this table */
- , { 0,0,0,0 }
+ , { 0,0,0,0,0,0 }
};
-const AsmPrim ccall_Id = { "ccall", 0, 0, MONAD_IO, i_PRIMOP2, i_ccall_Id };
-const AsmPrim ccall_IO = { "ccall", 0, 0, MONAD_IO, i_PRIMOP2, i_ccall_IO };
+const AsmPrim ccall_ccall_Id
+ = { "ccall", 0, 0, MONAD_IO, i_PRIMOP2, i_ccall_ccall_Id };
+const AsmPrim ccall_ccall_IO
+ = { "ccall", 0, 0, MONAD_IO, i_PRIMOP2, i_ccall_ccall_IO };
+const AsmPrim ccall_stdcall_Id
+ = { "ccall", 0, 0, MONAD_IO, i_PRIMOP2, i_ccall_stdcall_Id };
+const AsmPrim ccall_stdcall_IO
+ = { "ccall", 0, 0, MONAD_IO, i_PRIMOP2, i_ccall_stdcall_IO };
const AsmPrim* asmFindPrim( char* s )
AsmBCO bco = asmBeginBCO(0 /*NIL*/);
emiti_8(bco,i_ARG_CHECK,2);
emiti_8(bco,i_PRIMOP1,i_pushcatchframe);
- bco->sp += (1-2)*sizeofW(StgPtr) + sizeofW(StgCatchFrame);
+ incSp(bco, (1-2)*sizeofW(StgPtr) + sizeofW(StgCatchFrame));
emiti_(bco,i_ENTER);
+ decSp(bco, sizeofW(StgPtr));
asmEndBCO(bco);
return bco;
}
AsmBCO bco = asmBeginBCO(0 /*NIL*/);
emiti_8(bco,i_ARG_CHECK,1);
emiti_8(bco,i_PRIMOP2,i_raise);
+ decSp(bco,sizeofW(StgPtr));
asmEndBCO(bco);
return bco;
}
emit_i_VAR(cont,1);
emit_i_SLIDE(cont,1,2);
emiti_(cont,i_ENTER);
- cont->sp += 3*sizeofW(StgPtr);
+ incSp(cont, 3*sizeofW(StgPtr));
asmEndBCO(cont);
eval = asmBeginBCO(0 /*NIL*/);
emit_i_SLIDE(eval,3,1);
emiti_8(eval,i_PRIMOP1,i_pushseqframe);
emiti_(eval,i_ENTER);
- eval->sp += sizeofW(StgSeqFrame) + 4*sizeofW(StgPtr);
+ incSp(eval, sizeofW(StgSeqFrame) + 4*sizeofW(StgPtr));
asmEndBCO(eval);
return eval;
ASSERT( sizeW_fromITBL(info) >= MIN_NONUPD_SIZE + sizeofW(StgHeader) );
emiti_8(bco,i_ALLOC_CONSTR,bco->nps.len);
asmWords(bco,AsmInfo,info);
- bco->sp += sizeofW(StgClosurePtr);
+ incSp(bco, sizeofW(StgClosurePtr));
grabHpNonUpd(bco,sizeW_fromITBL(info));
return bco->sp;
}
/* only reason to include info is for this assertion */
assert(info->layout.payload.ptrs == size);
emit_i_PACK(bco, bco->sp - v);
- bco->sp = start;
+ setSp(bco, start);
}
void asmBeginUnpack( AsmBCO bco )
AsmVar asmAllocAP( AsmBCO bco, AsmNat words )
{
emiti_8(bco,i_ALLOC_AP,words);
- bco->sp += sizeofW(StgPtr);
+ incSp(bco, sizeofW(StgPtr));
grabHpUpd(bco,AP_sizeW(words));
return bco->sp;
}
{
emit_i_MKAP(bco,bco->sp-v,bco->sp-start-1);
/* -1 because fun isn't counted */
- bco->sp = start;
+ setSp(bco, start);
}
AsmVar asmAllocPAP( AsmBCO bco, AsmNat size )
{
emiti_8(bco,i_ALLOC_PAP,size);
- bco->sp += sizeofW(StgPtr);
+ incSp(bco, sizeofW(StgPtr));
return bco->sp;
}
{
emiti_8_8(bco,i_MKPAP,bco->sp-v,bco->sp-start-1);
/* -1 because fun isn't counted */
- bco->sp = start;
+ setSp(bco, start);
}
AsmVar asmClosure( AsmBCO bco, AsmObject p )
{
emit_i_CONST(bco,bco->object.ptrs.len);
asmPtr(bco,p);
- bco->sp += sizeofW(StgPtr);
+ incSp(bco, sizeofW(StgPtr));
return bco->sp;
}
+AsmVar asmGHCClosure( AsmBCO bco, AsmObject p )
+{
+ // A complete hack. Pushes the address as a tagged int
+ // and then uses SLIDE to get rid of the tag. Appalling.
+ asmConstInt(bco, (AsmInt)p);
+ emit_i_SLIDE(bco,0,1); decSp(bco,1);
+ return bco->sp;
+}
+
+
/* --------------------------------------------------------------------------
* Building InfoTables
* ------------------------------------------------------------------------*/
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