X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2FSDCCsymt.c;h=72f323ab3437b7d0de6f0fec90d132b1d5ffc86b;hb=6c78bc0cba530b6d01daaedcbb327a1f06013c27;hp=1e02f3cdf913f7409b77673229d4ceaadd09b495;hpb=8d27b83ad215d62145d2837388928355d64f35c6;p=fw%2Fsdcc diff --git a/src/SDCCsymt.c b/src/SDCCsymt.c index 1e02f3cd..72f323ab 100644 --- a/src/SDCCsymt.c +++ b/src/SDCCsymt.c @@ -81,7 +81,7 @@ initSymt () } /*-----------------------------------------------------------------*/ -/* newBucket - allocates & returns a new bucket */ +/* newBucket - allocates & returns a new bucket */ /*-----------------------------------------------------------------*/ bucket * newBucket () @@ -118,7 +118,7 @@ addSym (bucket ** stab, int checkType) { int i; /* index into the hash Table */ - bucket *bp; /* temp bucket * */ + bucket *bp; /* temp bucket * */ if (checkType) { symbol *csym = (symbol *)sym; @@ -141,8 +141,8 @@ addSym (bucket ** stab, /* get a free entry */ bp = Safe_alloc ( sizeof (bucket)); - bp->sym = sym; /* update the symbol pointer */ - bp->level = level; /* update the nest level */ + bp->sym = sym; /* update the symbol pointer */ + bp->level = level; /* update the nest level */ bp->block = block; strncpyz (bp->name, sname, sizeof(bp->name)); /* copy the name into place */ @@ -163,7 +163,7 @@ addSym (bucket ** stab, } /*-----------------------------------------------------------------*/ -/* deleteSym - deletes a symbol from the hash Table entry */ +/* deleteSym - deletes a symbol from the hash Table entry */ /*-----------------------------------------------------------------*/ void deleteSym (bucket ** stab, void *sym, char *sname) @@ -184,6 +184,7 @@ deleteSym (bucket ** stab, void *sym, char *sname) if (!bp) /* did not find it */ return; + /* if this is the first one in the chain */ if (!bp->prev) { @@ -199,11 +200,10 @@ deleteSym (bucket ** stab, void *sym, char *sname) bp->prev->next = bp->next; } - } /*-----------------------------------------------------------------*/ -/* findSym - finds a symbol in a table */ +/* findSym - finds a symbol in a table */ /*-----------------------------------------------------------------*/ void * findSym (bucket ** stab, void *sym, const char *sname) @@ -592,7 +592,6 @@ void checkTypeSanity(sym_link *etype, char *name) { // short AND long werror (E_LONG_AND_SHORT_INVALID, noun, name); } - } /*------------------------------------------------------------------*/ @@ -690,9 +689,9 @@ mergeSpec (sym_link * dest, sym_link * src, char *name) return dest; } -/*------------------------------------------------------------------*/ +/*-------------------------------------------------------------------*/ /* genSymName - generates and returns a name used for anonymous vars */ -/*------------------------------------------------------------------*/ +/*-------------------------------------------------------------------*/ char * genSymName (int level) { @@ -747,7 +746,7 @@ newFloatLink () } /*------------------------------------------------------------------*/ -/* newFixed16x16Link - a new Float type */ +/* newFixed16x16Link - a new Float type */ /*------------------------------------------------------------------*/ sym_link * newFixed16x16Link () @@ -1007,7 +1006,7 @@ copySymbol (symbol * src) } /*------------------------------------------------------------------*/ -/* reverseSyms - reverses the links for a symbol chain */ +/* reverseSyms - reverses the links for a symbol chain */ /*------------------------------------------------------------------*/ symbol * reverseSyms (symbol * sym) @@ -1032,7 +1031,7 @@ reverseSyms (symbol * sym) } /*------------------------------------------------------------------*/ -/* reverseLink - reverses the links for a type chain */ +/* reverseLink - reverses the links for a type chain */ /*------------------------------------------------------------------*/ sym_link * reverseLink (sym_link * type) @@ -1082,24 +1081,20 @@ addSymChain (symbol ** symHead) DCL_ELEM (sym->type) = getNelements (sym->type, sym->ival); } - /* if already exists in the symbol table then check if - one of them is an extern definition; - if yes then then check if the type match; - if the types match then delete the current entry and - add the new entry */ + /* if already exists in the symbol table on the same level */ if ((csym = findSymWithLevel (SymbolTab, sym)) && csym->level == sym->level) { /* if not formal parameter and not in file scope then show symbol redefined error - else check if symbols have conpatible types */ + else check if symbols have compatible types */ if (!sym->_isparm && sym->level > 0) error = 1; else { - /* If the previous definition was for an array with incomplete */ - /* type, and the new definition has completed the type, update */ - /* the original type to match */ + /* If the previous definition was for an array with incomplete + type, and the new definition has completed the type, update + the original type to match */ if (IS_DECL(csym->type) && DCL_TYPE(csym->type)==ARRAY && IS_DECL(sym->type) && DCL_TYPE(sym->type)==ARRAY) { @@ -1156,6 +1151,14 @@ addSymChain (symbol ** symHead) if (csym->ival && !sym->ival) sym->ival = csym->ival; + if (!csym->cdef && !sym->cdef && IS_EXTERN (sym->etype)) + { + /* if none of symbols is a compiler defined function + and at least one is not extern + then set the new symbol to non extern */ + SPEC_EXTR(sym->etype) = SPEC_EXTR(csym->etype); + } + /* delete current entry */ deleteSym (SymbolTab, csym, csym->name); deleteFromSeg(csym); @@ -1209,6 +1212,8 @@ structElemType (sym_link * stype, value * id) etype = getSpec (type); SPEC_SCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ? SPEC_SCLS (etype) : SPEC_SCLS (petype)); + SPEC_OCLS (etype) = (SPEC_SCLS (petype) == S_REGISTER ? + SPEC_OCLS (etype) : SPEC_OCLS (petype)); if (IS_SPEC (type)) SPEC_CONST (type) |= SPEC_CONST (stype); else @@ -1267,6 +1272,8 @@ compStructSize (int su, structdef * sdef) /* if this is a bit field */ if (loop->bitVar) { + SPEC_BUNNAMED (loop->etype) = loop->bitUnnamed; + /* change it to a unsigned bit */ SPEC_NOUN (loop->etype) = V_BITFIELD; /* ISO/IEC 9899 J.3.9 implementation defined behaviour: */ @@ -1274,16 +1281,17 @@ compStructSize (int su, structdef * sdef) if (!loop->etype->select.s.b_signed) SPEC_USIGN(loop->etype) = 1; - SPEC_BLEN (loop->etype) = loop->bitVar; - if (loop->bitVar == BITVAR_PAD) { /* A zero length bitfield forces padding */ - SPEC_BSTR (loop->etype) = bitOffset; SPEC_BLEN (loop->etype) = 0; - bitOffset = 8; + SPEC_BSTR (loop->etype) = bitOffset; + if (bitOffset > 0) + bitOffset = 8; /* padding is not needed when at bit 0 */ loop->offset = sum; } else { + SPEC_BLEN (loop->etype) = loop->bitVar; + if (bitOffset == 8) { bitOffset = 0; sum++; @@ -1681,14 +1689,14 @@ changePointer (sym_link * p) } /*------------------------------------------------------------------*/ -/* checkDecl - does semantic validation of a declaration */ +/* checkDecl - does semantic validation of a declaration */ /*------------------------------------------------------------------*/ int checkDecl (symbol * sym, int isProto) { - checkSClass (sym, isProto); /* check the storage class */ - changePointer (sym->type); /* change pointers if required */ + checkSClass (sym, isProto); /* check the storage class */ + changePointer (sym->type); /* change pointers if required */ /* if this is an array without any dimension then update the dimension from the initial value */ @@ -1865,7 +1873,7 @@ computeType (sym_link * type1, sym_link * type2, /* if both are bitvars choose the larger one */ else if (IS_BITVAR (etype1) && IS_BITVAR (etype2)) rType = SPEC_BLEN (etype1) >= SPEC_BLEN (etype2) ? - copyLinkChain (type1) : copyLinkChain (type1); + copyLinkChain (type1) : copyLinkChain (type2); /* if only one of them is a bit variable then the other one prevails */ else if (IS_BITVAR (etype1) && !IS_BITVAR (etype2)) @@ -2040,8 +2048,28 @@ computeType (sym_link * type1, sym_link * type2, return rType; } +int +comparePtrType (sym_link * dest, sym_link * src, bool bMustCast) +{ + int res; + + if (IS_VOID (src->next) && IS_VOID (dest->next)) + return bMustCast ? -1 : 1; + if ((IS_VOID (src->next) && !IS_VOID (dest->next)) || + (!IS_VOID (src->next) && IS_VOID (dest->next)) ) + return -1; + res = compareType (dest->next, src->next); + if (res == 1) + return bMustCast ? -1 : 1; + else if (res == -2) + return -2; + else + return 0; +} + /*--------------------------------------------------------------------*/ -/* compareType - will do type check return 1 if match, -1 if castable */ +/* compareType - will do type check return 1 if match, 0 if no match, */ +/* -1 if castable, -2 if only signedness differs */ /*--------------------------------------------------------------------*/ int compareType (sym_link * dest, sym_link * src) @@ -2067,7 +2095,7 @@ compareType (sym_link * dest, sym_link * src) return -1; if (IS_FUNC (dest->next) && IS_VOID(src->next)) return -1; - return compareType (dest->next, src->next); + return comparePtrType(dest, src, FALSE); } if (DCL_TYPE (src) == DCL_TYPE (dest)) @@ -2076,7 +2104,7 @@ compareType (sym_link * dest, sym_link * src) { //checkFunction(src,dest); } - return compareType (dest->next, src->next); + return comparePtrType(dest, src, FALSE); } if (IS_PTR (dest) && IS_GENPTR (src) && IS_VOID(src->next)) { @@ -2086,7 +2114,9 @@ compareType (sym_link * dest, sym_link * src) (IS_GENPTR (dest) || ((DCL_TYPE(src) == POINTER) && (DCL_TYPE(dest) == IPOINTER)) )) - return -1; + { + return comparePtrType(dest, src, TRUE); + } if (IS_PTR (dest) && IS_ARRAY (src)) { value *val=aggregateToPointer (valFromType(src)); @@ -2105,6 +2135,9 @@ compareType (sym_link * dest, sym_link * src) return 0; } + if (IS_PTR (src) && IS_VOID (dest)) + return -1; + /* if one is a specifier and the other is not */ if ((IS_SPEC (src) && !IS_SPEC (dest)) || (IS_SPEC (dest) && !IS_SPEC (src))) @@ -2154,7 +2187,7 @@ compareType (sym_link * dest, sym_link * src) return -1; if (SPEC_USIGN (dest) != SPEC_USIGN (src)) - return -1; + return -2; return 1; } @@ -2291,7 +2324,7 @@ compareTypeExact (sym_link * dest, sym_link * src, int level) srcScls = SPEC_SCLS (src); /* Compensate for const to const code change in checkSClass() */ - if (!level & port->mem.code_ro && SPEC_CONST (dest)) + if (((!level) & port->mem.code_ro) && SPEC_CONST (dest)) { if (srcScls == S_CODE && destScls == S_FIXED) destScls = S_CODE; @@ -2339,7 +2372,7 @@ compareTypeExact (sym_link * dest, sym_link * src, int level) } /*------------------------------------------------------------------*/ -/* inCalleeSaveList - return 1 if found in callee save list */ +/* inCalleeSaveList - return 1 if found in callee save list */ /*------------------------------------------------------------------*/ static int calleeCmp(void *p1, void *p2) @@ -2395,6 +2428,8 @@ aggregateToPointer (value * val) } break; case S_AUTO: + DCL_TYPE (val->type) = PTR_TYPE(SPEC_OCLS(val->etype)); + break; case S_DATA: case S_REGISTER: DCL_TYPE (val->type) = POINTER; @@ -3252,8 +3287,8 @@ symbol *__fps16x16_lteq; symbol *__fps16x16_gt; symbol *__fps16x16_gteq; -/* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */ -symbol *__muldiv[3][3][2]; +/* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED/BOTH */ +symbol *__muldiv[3][3][4]; /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */ sym_link *__multypes[3][2]; /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */ @@ -3407,7 +3442,7 @@ initCSupport () }; const char *ssu[] = { - "s", "u" + "s", "su", "us", "u" }; const char *srlrr[] = { @@ -3477,12 +3512,12 @@ initCSupport () { if (tofrom) { - SNPRINTF (buffer, sizeof(buffer), "__fs2%s%s", ssu[su], sbwd[bwd]); + SNPRINTF (buffer, sizeof(buffer), "__fs2%s%s", ssu[su*3], sbwd[bwd]); __conv[tofrom][bwd][su] = funcOfType (buffer, __multypes[bwd][su], floatType, 1, options.float_rent); } else { - SNPRINTF (buffer, sizeof(buffer), "__%s%s2fs", ssu[su], sbwd[bwd]); + SNPRINTF (buffer, sizeof(buffer), "__%s%s2fs", ssu[su*3], sbwd[bwd]); __conv[tofrom][bwd][su] = funcOfType (buffer, floatType, __multypes[bwd][su], 1, options.float_rent); } } @@ -3497,7 +3532,7 @@ initCSupport () { if (tofrom) { - SNPRINTF (buffer, sizeof(buffer), "__fps16x162%s%s", ssu[su], fp16x16sbwd[bwd]); + SNPRINTF (buffer, sizeof(buffer), "__fps16x162%s%s", ssu[su*3], fp16x16sbwd[bwd]); if(bwd == 3) { __fp16x16conv[tofrom][bwd][su] = funcOfType (buffer, floatType, fixed16x16Type, 1, options.float_rent); } else @@ -3505,7 +3540,7 @@ initCSupport () } else { - SNPRINTF (buffer, sizeof(buffer), "__%s%s2fps16x16", ssu[su], fp16x16sbwd[bwd]); + SNPRINTF (buffer, sizeof(buffer), "__%s%s2fps16x16", ssu[su*3], fp16x16sbwd[bwd]); if(bwd == 3) { __fp16x16conv[tofrom][bwd][su] = funcOfType (buffer, fixed16x16Type, floatType, 1, options.float_rent); } else @@ -3525,7 +3560,7 @@ initCSupport () SNPRINTF (buffer, sizeof(buffer), "_%s%s%s", smuldivmod[muldivmod], - ssu[su], + ssu[su*3], sbwd[bwd]); __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent); FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1; @@ -3537,7 +3572,34 @@ initCSupport () Therefore they've been merged into mulint() and mullong(). */ - for (bwd = 0; bwd < 3; bwd++) + /* byte */ + bwd = 0; + for (su = 0; su < 4; su++) + { + for (muldivmod = 0; muldivmod < 3; muldivmod++) + { + /* muluchar, mulschar, mulsuchar and muluschar are separate functions, because e.g. the z80 + port is sign/zero-extending to int before calling mulint() */ + /* div and mod : s8_t x s8_t -> s8_t should be s8_t x s8_t -> s16_t, see below */ + if (!TARGET_IS_PIC16 || muldivmod != 1 || su != 0) + { + SNPRINTF (buffer, sizeof(buffer), + "_%s%s%s", + smuldivmod[muldivmod], + ssu[su], + sbwd[bwd]); + __muldiv[muldivmod][bwd][su] = funcOfType ( + _mangleFunctionName(buffer), + __multypes[bwd][su%2], + __multypes[bwd][su/2], + 2, + options.intlong_rent); + FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1; + } + } + } + + for (bwd = 1; bwd < 3; bwd++) { for (su = 0; su < 2; su++) { @@ -3549,7 +3611,7 @@ initCSupport () SNPRINTF (buffer, sizeof(buffer), "_%s%s%s", smuldivmod[muldivmod], - ssu[su], + ssu[su*3], sbwd[bwd]); __muldiv[muldivmod][bwd][su] = funcOfType ( _mangleFunctionName(buffer), @@ -3589,20 +3651,6 @@ initCSupport () /* mul only */ muldivmod = 0; - /* byte */ - bwd = 0; - for (su = 0; su < 2; su++) - { - /* muluchar and mulschar are still separate functions, because e.g. the z80 - port is sign/zero-extending to int before calling mulint() */ - SNPRINTF (buffer, sizeof(buffer), - "_%s%s%s", - smuldivmod[muldivmod], - ssu[su], - sbwd[bwd]); - __muldiv[muldivmod][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[bwd][su], 2, options.intlong_rent); - FUNC_NONBANKED (__muldiv[muldivmod][bwd][su]->type) = 1; - } /* signed only */ su = 0; /* word and doubleword */ @@ -3628,7 +3676,7 @@ initCSupport () SNPRINTF (buffer, sizeof(buffer), "_%s%s%s", srlrr[rlrr], - ssu[su], + ssu[su*3], sbwd[bwd]); __rlrr[rlrr][bwd][su] = funcOfType (_mangleFunctionName(buffer), __multypes[bwd][su], __multypes[0][0], 2, options.intlong_rent); FUNC_NONBANKED (__rlrr[rlrr][bwd][su]->type) = 1;