X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fpic%2Fralloc.c;h=d51dca63908cc3bbd70662d61bd533b44c9ae55c;hb=3062f96ccb55d1d05caf9c8782f4961f87b341ce;hp=3281321b7524b239859904ea79bd362d1a6cb859;hpb=5979bbd157a5f3cd8018aed666e4dd41a3e08edf;p=fw%2Fsdcc diff --git a/src/pic/ralloc.c b/src/pic/ralloc.c index 3281321b..d51dca63 100644 --- a/src/pic/ralloc.c +++ b/src/pic/ralloc.c @@ -26,18 +26,12 @@ #include "common.h" #include "ralloc.h" +#include "device.h" #include "pcode.h" #include "gen.h" -#if defined(__BORLANDC__) || defined(_MSC_VER) -#define STRCASECMP stricmp #define FENTRY2 1 ? (void)0 : printf -#else -#define STRCASECMP strcasecmp -//#define FENTRY2(fmt,...) do { fprintf (stderr, "%s:%d: called.\n", __FUNCTION__, __LINE__); fprintf (stderr, fmt, ## __VA_ARGS__); } while (0) -#define FENTRY2 1 ? (void)0 : printf -#endif /* this should go in SDCCicode.h, but it doesn't. */ #define IS_REF(op) (IS_SYMOP(op) && op->operand.symOperand->isref == 1) @@ -82,8 +76,7 @@ set *dynInternalRegs=NULL; static hTab *dynDirectRegNames= NULL; // static hTab *regHash = NULL; /* a hash table containing ALL registers */ -static int dynrIdx=0x20; -static int rDirectIdx=0; +static int dynrIdx = 0x1000; int pic14_nRegs = 128; // = sizeof (regspic14) / sizeof (regs); @@ -172,7 +165,7 @@ static void static char * debugAopGet (char *str, operand * op) { - if (str) + if (str) debugLog (str); printOperand (op, debugF); @@ -257,7 +250,6 @@ static char * case STRUCT: return "STRUCT"; case UNION: return "UNION"; case ENUM: return "ENUM"; - case ELIPSIS: return "ELIPSIS"; case RANGE: return "RANGE"; case FAR: return "FAR"; case CASE: return "CASE"; @@ -343,22 +335,20 @@ static regs *regWithIdx (set *dRegs, int idx, int fixed); static regs* newReg(short type, PIC_OPTYPE pc_type, int rIdx, char *name, int size, int alias) { - regs *dReg; + regs *dReg, *reg_alias; /* check whether a matching register already exists */ dReg = dirregWithName( name ); if (dReg) { - //printf( "%s: already present: %s\n", __FUNCTION__, name ); - return (dReg); - } - dReg = regWithIdx( dynDirectRegs, rIdx, 0 ); - if (!dReg) dReg = regWithIdx( dynDirectRegs, rIdx, 1 ); - if (dReg) - { - //printf( "%s: already present %s (idx:%d/%x)", __FUNCTION__, name, rIdx, rIdx ); - return (dReg); + //printf( "%s: already present: %s\n", __FUNCTION__, name ); + return (dReg); } + // check whether a register at that location exists + reg_alias = regWithIdx( dynDirectRegs, rIdx, 0 ); + if (!reg_alias) reg_alias = regWithIdx( dynDirectRegs, rIdx, 1 ); + + // create a new register dReg = Safe_calloc(1,sizeof(regs)); dReg->type = type; dReg->pc_type = pc_type; @@ -383,18 +373,12 @@ static regs* newReg(short type, PIC_OPTYPE pc_type, int rIdx, char *name, int si dReg->address = 0; dReg->size = size; dReg->alias = alias; - dReg->reg_alias = NULL; + dReg->reg_alias = reg_alias; dReg->reglives.usedpFlows = newSet(); dReg->reglives.assignedpFlows = newSet(); + if (type != REG_STK) hTabAddItem(&dynDirectRegNames, regname2key(dReg->name), dReg); + debugLog( "%s: Created register %s.\n", __FUNCTION__, dReg->name); - hTabAddItem(&dynDirectRegNames, regname2key(dReg->name), dReg); -#ifdef __GNUC__ - debugLog( "%s: Created register %s (%p).\n", - __FUNCTION__, dReg->name, __builtin_return_address(0) ); -#else - debugLog( "%s: Created register %s.\n", - __FUNCTION__, dReg->name); -#endif return dReg; } @@ -410,6 +394,7 @@ regWithIdx (set *dRegs, int idx, int fixed) dReg = setNextItem(dRegs)) { if(idx == dReg->rIdx && (fixed == (int)dReg->isFixed)) { + while (dReg->reg_alias) dReg = dReg->reg_alias; return dReg; } } @@ -495,11 +480,13 @@ regFindFree (set *dRegs) /*-----------------------------------------------------------------*/ /* initStack - allocate registers for a pseudo stack */ /*-----------------------------------------------------------------*/ -void initStack(int base_address, int size) +void initStack(int base_address, int size, int shared) { int i; - + PIC_device *pic; + + pic = pic14_getPIC(); Gstack_base_addr = base_address; Gstack_size = size; //fprintf(stderr,"initStack [base:0x%02x, size:%d]\n", base_address, size); @@ -508,14 +495,13 @@ void initStack(int base_address, int size) char buffer[16]; regs *r; SNPRINTF(&buffer[0], 16, "STK%02d", i); - r = newReg(REG_STK, PO_GPR_TEMP,base_address,buffer,1,0); - r->address = base_address; // Pseudo stack needs a fixed location that can be known by all modules + // multi-bank device, sharebank prohibited by user + r = newReg(REG_STK, PO_GPR_TEMP, base_address--, buffer, 1, shared ? (pic ? pic->bankMask : 0x180) : 0x0); r->isFixed = 1; r->isPublic = 1; + r->isEmitted = 1; //r->name[0] = 's'; - r->alias = 0x180; // Using shared memory for pseudo stack addSet(&dynStackRegs,r); - base_address--; } } @@ -590,6 +576,8 @@ dirregWithName (char *name) while(reg) { if(STRCASECMP(reg->name, name) == 0) { + // handle registers with multiple names + while (reg->reg_alias) reg = reg->reg_alias; return(reg); } @@ -636,7 +624,7 @@ allocNewDirReg (sym_link *symlnk,const char *name) else idx = address; } else { - idx = rDirectIdx++; + idx = dynrIdx++; } reg = newReg(REG_GPR, PO_DIR, idx, (char*)name,getSize (symlnk),0 ); debugLog (" -- added %s to hash, size = %d\n", (char*)name,reg->size); @@ -749,7 +737,7 @@ allocDirReg (operand *op ) if(!IS_CONFIG_ADDRESS(address)) { //fprintf(stderr,"allocating new reg %s\n",name); - reg = newReg(REG_GPR, PO_DIR, rDirectIdx++, name,getSize (OP_SYMBOL (op)->type),0 ); + reg = newReg(REG_GPR, PO_DIR, dynrIdx++, name,getSize (OP_SYMBOL (op)->type),0 ); debugLog (" -- added %s to hash, size = %d\n", name,reg->size); //hTabAddItem(&dynDirectRegNames, regname2key(name), reg); @@ -826,7 +814,7 @@ allocRegByName (char *name, int size) * a new one and put it in the hash table AND in the * dynDirectRegNames set */ //fprintf (stderr,"%s symbol name %s, size:%d\n", __FUNCTION__,name,size); - reg = newReg(REG_GPR, PO_DIR, rDirectIdx++, name,size,0 ); + reg = newReg(REG_GPR, PO_DIR, dynrIdx++, name,size,0 ); for (sym = setFirstItem(sfr->syms); sym; sym = setNextItem(sfr->syms)) { if (strcmp(reg->name+1,sym->name)==0) { unsigned a = SPEC_ADDR(sym->etype); @@ -902,14 +890,18 @@ typeRegWithIdx (int idx, int type, int fixed) break; case REG_STK: - if( (dReg = regWithIdx ( dynStackRegs, idx, fixed)) != NULL ) { + if( (dReg = regWithIdx ( dynStackRegs, idx, 0)) != NULL ) { + debugLog ("Found a Stack Register!\n"); + return dReg; + } else + if( (dReg = regWithIdx ( dynStackRegs, idx, 1)) != NULL ) { debugLog ("Found a Stack Register!\n"); return dReg; } else { werror (E_STACK_OUT, "Register"); /* return an existing register just to avoid the SDCC crash */ - return regWithIdx ( dynStackRegs, 0x7f, fixed); + return regWithIdx ( dynStackRegs, 0x7f, 0); } break; case REG_SFR: @@ -1075,10 +1067,7 @@ void writeSetUsedRegs(FILE *of, set *dRegs) } } -extern void assignFixedRegisters(set *regset); -extern void assignRelocatableRegisters(set *regset,int used); extern void dump_map(void); -extern void dump_sfr(FILE *of); void packBits(set *bregs) { @@ -1129,7 +1118,7 @@ void packBits(set *bregs) bit_no=0; sprintf (buffer, "bitfield%d", byte_no); //fprintf(stderr,"new relocatable bit field\n"); - relocbitfield = newReg(REG_GPR, PO_GPR_BIT,rDirectIdx++,buffer,1,0); + relocbitfield = newReg(REG_GPR, PO_GPR_BIT,dynrIdx++,buffer,1,0); relocbitfield->isBitField = 1; //addSet(&dynDirectRegs,relocbitfield); addSet(&dynInternalRegs,relocbitfield); @@ -1138,7 +1127,7 @@ void packBits(set *bregs) } breg->reg_alias = relocbitfield; - breg->address = rDirectIdx; /* byte_no; */ + breg->address = dynrIdx; /* byte_no; */ breg->rIdx = bit_no++; } } @@ -1177,6 +1166,7 @@ void bitEQUs(FILE *of, set *bregs) } } + void aliasEQUs(FILE *of, set *fregs, int use_rIdx) { regs *reg; @@ -1202,63 +1192,14 @@ void aliasEQUs(FILE *of, set *fregs, int use_rIdx) void writeUsedRegs(FILE *of) { - packBits(dynDirectBitRegs); - - assignFixedRegisters(dynInternalRegs); - assignFixedRegisters(dynAllocRegs); - assignFixedRegisters(dynStackRegs); - assignFixedRegisters(dynDirectRegs); - assignRelocatableRegisters(dynInternalRegs,0); - assignRelocatableRegisters(dynAllocRegs,0); - assignRelocatableRegisters(dynStackRegs,0); + packBits(dynDirectBitRegs); - assignRelocatableRegisters(dynDirectRegs,0); - /* - assignRelocatableRegisters(dynDirectRegs,0); - printf("assignRelocatableRegisters(dynDirectRegs,0);\n"); - */ //dump_map(); - dump_sfr(of); bitEQUs(of,dynDirectBitRegs); - /* - aliasEQUs(of,dynAllocRegs,0); - aliasEQUs(of,dynDirectRegs,0); - aliasEQUs(of,dynStackRegs,0); - aliasEQUs(of,dynProcessorRegs,1); - */ } -#if 0 -/*-----------------------------------------------------------------*/ -/* allDefsOutOfRange - all definitions are out of a range */ -/*-----------------------------------------------------------------*/ -static bool -allDefsOutOfRange (bitVect * defs, int fseq, int toseq) -{ - int i; - - debugLog ("%s\n", __FUNCTION__); - if (!defs) - return TRUE; - - for (i = 0; i < defs->size; i++) - { - iCode *ic; - - if (bitVectBitValue (defs, i) && - (ic = hTabItemWithKey (iCodehTab, i)) && - (ic->seq >= fseq && ic->seq <= toseq)) - - return FALSE; - - } - - return TRUE; -} -#endif - /*-----------------------------------------------------------------*/ /* computeSpillable - given a point find the spillable live ranges */ /*-----------------------------------------------------------------*/ @@ -3084,6 +3025,19 @@ packRegsForAssign (iCode * ic, eBBlock * ebp) if (!dic) return 0; /* did not find */ + /* if assignment then check that right is not a bit */ + if (ASSIGNMENT (ic) && !POINTER_SET (ic)) + { + sym_link *etype = operandType (IC_RESULT (dic)); + if (IS_BITFIELD (etype)) + { + /* if result is a bit too then it's ok */ + etype = operandType (IC_RESULT (ic)); + if (!IS_BITFIELD (etype)) + return 0; + } + } + /* if the result is on stack or iaccess then it must be the same at least one of the operands */ if (OP_SYMBOL (IC_RESULT (ic))->onStack ||