1 /*-------------------------------------------------------------------------
2 SDCCsymt.h - Header file for Symbols table related structures and MACRO's.
3 Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 In other words, you are welcome to use, share and improve this program.
20 You are forbidden to forbid anyone else to use, share and improve
21 what you give them. Help stamp out software-hoarding!
22 -------------------------------------------------------------------------*/
27 #define MAX_NEST_LEVEL 256
28 #define SDCC_SYMNAME_MAX 64
29 #define SDCC_NAME_MAX 3*SDCC_SYMNAME_MAX // big enough for _<func>_<var>_etc
30 #include "SDCChasht.h"
31 #include "SDCCglobl.h"
33 #define INTNO_MAX 255 /* maximum allowed interrupt number */
34 #define INTNO_UNSPEC (INTNO_MAX+1) /* interrupt number unspecified */
61 // values for first byte (or 3 most significant bits) of generic pointer.
62 #define GPTYPE_FAR 0x00
63 #define GPTYPE_NEAR 0x40
64 #define GPTYPE_XSTACK 0x60
65 #define GPTYPE_CODE 0x80
67 #define HASHTAB_SIZE 256
69 /* hash table bucket */
72 void *sym; /* pointer to the object */
73 char name[SDCC_NAME_MAX + 1]; /* name of this symbol */
74 int level; /* nest level for this symbol */
75 int block; /* belongs to which block */
76 struct bucket *prev; /* ptr 2 previous bucket */
77 struct bucket *next; /* ptr 2 next bucket */
81 typedef struct structdef
83 char tag[SDCC_NAME_MAX + 1]; /* tag part of structure */
84 unsigned char level; /* Nesting level */
85 struct symbol *fields; /* pointer to fields */
86 unsigned size; /* sizeof the table in bytes */
87 int type; /* STRUCT or UNION */
91 /* noun definitions */
128 /* specifier is the last in the type-chain */
129 typedef struct specifier
131 NOUN noun; /* CHAR INT STRUCTURE LABEL */
132 STORAGE_CLASS sclass; /* REGISTER,AUTO,FIX,CONSTANT */
133 struct memmap *oclass; /* output storage class */
134 unsigned _long:1; /* 1=long */
135 unsigned _short:1; /* 1=short int */
136 unsigned _unsigned:1; /* 1=unsigned, 0=signed */
137 unsigned _signed:1; /* just for sanity checks only*/
138 unsigned _static:1; /* 1=static keyword found */
139 unsigned _extern:1; /* 1=extern found */
140 unsigned _absadr:1; /* absolute address specfied */
141 unsigned _volatile:1; /* is marked as volatile */
142 unsigned _const:1; /* is a constant */
143 unsigned _typedef:1; /* is typedefed */
144 unsigned _isregparm:1; /* is the first parameter */
145 unsigned _isenum:1; /* is an enumerated type */
146 unsigned _addr; /* address of symbol */
147 unsigned _stack; /* stack offset for stacked v */
148 unsigned _bitStart; /* bit start position */
149 int _bitLength; /* bit length */
150 int argreg; /* reg no for regparm */
152 { /* Values if constant or enum */
153 TYPE_WORD v_int; /* 2 bytes: int and char values */
154 char *v_char; /* character string */
155 TYPE_UWORD v_uint; /* 2 bytes: unsigned int const value */
156 TYPE_DWORD v_long; /* 4 bytes: long constant value */
157 TYPE_UDWORD v_ulong; /* 4 bytes: unsigned long constant value */
158 double v_float; /* floating point constant value */
159 struct symbol *v_enum; /* ptr to enum_list if enum==1 */
162 struct structdef *v_struct; /* structure pointer */
166 /* types of declarators */
169 POINTER = 0, /* pointer to near data */
170 FPOINTER, /* pointer to far data */
171 CPOINTER, /* pointer to code space */
172 GPOINTER, /* _generic pointer */
173 PPOINTER, /* paged area pointer */
174 IPOINTER, /* pointer to upper 128 bytes */
175 UPOINTER, /* unknown pointer used only when parsing */
176 EEPPOINTER, /* pointer to eeprom */
182 typedef struct declarator
184 DECLARATOR_TYPE dcl_type; /* POINTER,ARRAY or FUNCTION */
185 unsigned int num_elem; /* # of elems if type==array */
186 unsigned ptr_const:1; /* pointer is constant */
187 unsigned ptr_volatile:1; /* pointer is volatile */
188 struct sym_link *tspec; /* pointer type specifier */
196 #define DECLSPEC2TXT(select) (select==DECLARATOR?"DECLARATOR":select==SPECIFIER?"SPECIFIER":"UNKNOW")
198 typedef struct sym_link
200 SYM_LINK_CLASS class; /* DECLARATOR or SPECIFIER */
201 unsigned tdef:1; /* current link created by */
202 /* typedef if this flag is set */
205 specifier s; /* if CLASS == SPECIFIER */
206 declarator d; /* if CLASS == DECLARATOR */
209 /* function attributes */
211 struct value *args; /* the defined arguments */
212 unsigned hasVargs:1; /* functions has varargs */
213 unsigned calleeSaves:1; /* functions uses callee save */
214 unsigned hasbody:1; /* function body defined */
215 unsigned hasFcall:1; /* does it call other functions */
216 unsigned reent:1; /* function is reentrant */
217 unsigned naked:1; /* naked function */
219 unsigned shadowregs:1; /* function uses shadow registers (pic16 port) */
220 unsigned wparam:1; /* first byte of arguments is passed via WREG (pic16 port) */
221 unsigned nonbanked:1; /* function has the nonbanked attribute */
222 unsigned banked:1; /* function has the banked attribute */
223 unsigned critical:1; /* critical function */
224 unsigned intrtn:1; /* this is an interrupt routine */
225 unsigned rbank:1; /* seperate register bank */
226 unsigned intno; /* 1=Interrupt svc routine */
227 short regbank; /* register bank 2b used */
228 unsigned builtin; /* is a builtin function */
229 unsigned javaNative; /* is a JavaNative Function (TININative ONLY) */
230 unsigned overlay; /* force parameters & locals into overlay segment */
231 unsigned hasStackParms; /* function has parameters on stack */
234 struct sym_link *next; /* next element on the chain */
238 typedef struct symbol
240 char name[SDCC_SYMNAME_MAX + 1]; /* Input Variable Name */
241 char rname[SDCC_NAME_MAX + 1]; /* internal name */
243 short level; /* declration lev,fld offset */
244 short block; /* sequential block # of defintion */
246 unsigned implicit:1; /* implicit flag */
247 unsigned undefined:1; /* undefined variable */
248 unsigned _isparm:1; /* is a parameter */
249 unsigned ismyparm:1; /* is parameter of the function being generated */
250 unsigned isitmp:1; /* is an intermediate temp */
251 unsigned islbl:1; /* is a temporary label */
252 unsigned isref:1; /* has been referenced */
253 unsigned isind:1; /* is a induction variable */
254 unsigned isinvariant:1; /* is a loop invariant */
255 unsigned cdef:1; /* compiler defined symbol */
256 unsigned addrtaken:1; /* address of the symbol was taken */
257 unsigned isreqv:1; /* is the register quivalent of a symbol */
258 unsigned udChked:1; /* use def checking has been already done */
260 /* following flags are used by the backend
261 for code generation and can be changed
262 if a better scheme for backend is thought of */
263 unsigned isLiveFcall:1; /* is live at or across a function call */
264 unsigned isspilt:1; /* has to be spilt */
265 unsigned spillA:1; /* spilt be register allocator */
266 unsigned remat:1; /* can be remateriazed */
267 unsigned isptr:1; /* is a pointer */
268 unsigned uptr:1; /* used as a pointer */
269 unsigned isFree:1; /* used by register allocator */
270 unsigned islocal:1; /* is a local variable */
271 unsigned blockSpil:1; /* spilt at block level */
272 unsigned remainSpil:1; /* spilt because not used in remainder */
273 unsigned stackSpil:1; /* has been spilt on temp stack location */
274 unsigned onStack:1; /* this symbol allocated on the stack */
275 unsigned iaccess:1; /* indirect access */
276 unsigned ruonly:1; /* used in return statement only */
277 unsigned spildir:1; /* spilt in direct space */
278 unsigned ptrreg:1; /* this symbol assigned to a ptr reg */
279 unsigned noSpilLoc:1; /* cannot be assigned a spil location */
280 unsigned isstrlit; /* is a string literal and it's usage count */
281 unsigned accuse; /* can be left in the accumulator
282 On the Z80 accuse is divided into
283 ACCUSE_A and ACCUSE_HL as the idea
286 unsigned dptr; /* 8051 variants with multiple DPTRS
287 currently implemented in DS390 only
289 int allocreq ; /* allocation is required for this variable */
290 int stack; /* offset on stack */
291 int xstack; /* offset on xternal stack */
292 short nRegs; /* number of registers required */
293 short regType; /* type of register required */
295 struct regs *regs[4]; /* can have at the most 4 registers */
296 struct asmop *aop; /* asmoperand for this symbol */
297 struct iCode *fuse; /* furthest use */
298 struct iCode *rematiCode; /* rematerialise with which instruction */
299 struct operand *reqv; /* register equivalent of a local variable */
300 struct symbol *prereqv; /* symbol before register equiv. substituion */
301 struct symbol *psbase; /* if pseudo symbol, the symbol it is based on */
304 struct symbol *spillLoc; /* register spil location */
305 struct set *itmpStack; /* symbols spilt @ this stack location */
308 short bitVar; /* this is a bit variable */
309 unsigned offset; /* offset from top if struct */
311 int lineDef; /* defined line number */
312 char *fileDef; /* defined filename */
313 int lastLine; /* for functions the last line */
314 struct sym_link *type; /* 1st link to declarator chain */
315 struct sym_link *etype; /* last link to declarator chain */
316 struct symbol *next; /* crosslink to next symbol */
317 struct symbol *localof; /* local variable of which function */
318 struct initList *ival; /* ptr to initializer if any */
319 struct bitVect *defs; /* bit vector for definitions */
320 struct bitVect *uses; /* bit vector for uses */
321 struct bitVect *regsUsed; /* for functions registers used */
322 int liveFrom; /* live from iCode sequence number */
323 int liveTo; /* live to sequence number */
324 int used; /* no. of times this was used */
325 int recvSize; /* size of first argument */
326 struct bitVect *clashes; /* overlaps with what other symbols */
330 extern sym_link *validateLink(sym_link *l,
336 /* Easy Access Macros */
337 #define DCL_TYPE(l) validateLink(l, "DCL_TYPE", #l, DECLARATOR, __FILE__, __LINE__)->select.d.dcl_type
338 #define DCL_ELEM(l) validateLink(l, "DCL_ELEM", #l, DECLARATOR, __FILE__, __LINE__)->select.d.num_elem
339 #define DCL_PTR_CONST(l) validateLink(l, "DCL_PTR_CONST", #l, DECLARATOR, __FILE__, __LINE__)->select.d.ptr_const
340 #define DCL_PTR_VOLATILE(l) validateLink(l, "DCL_PTR_VOLATILE", #l, DECLARATOR, __FILE__, __LINE__)->select.d.ptr_volatile
341 #define DCL_TSPEC(l) validateLink(l, "DCL_TSPEC", #l, DECLARATOR, __FILE__, __LINE__)->select.d.tspec
343 #define FUNC_DEBUG //assert(IS_FUNC(x));
344 #define FUNC_HASVARARGS(x) (x->funcAttrs.hasVargs)
345 #define IFFUNC_HASVARARGS(x) (IS_FUNC(x) && FUNC_HASVARARGS(x))
346 #define FUNC_ARGS(x) (x->funcAttrs.args)
347 #define IFFUNC_ARGS(x) (IS_FUNC(x) && FUNC_ARGS(x))
348 #define FUNC_HASFCALL(x) (x->funcAttrs.hasFcall)
349 #define IFFUNC_HASFCALL(x) (IS_FUNC(x) && FUNC_HASFCALL(x))
350 #define FUNC_HASBODY(x) (x->funcAttrs.hasbody)
351 #define IFFUNC_HASBODY(x) (IS_FUNC(x) && FUNC_HASBODY(x))
352 #define FUNC_CALLEESAVES(x) (x->funcAttrs.calleeSaves)
353 #define IFFUNC_CALLEESAVES(x) (IS_FUNC(x) && FUNC_CALLEESAVES(x))
354 #define FUNC_ISISR(x) (x->funcAttrs.intrtn)
355 #define IFFUNC_ISISR(x) (IS_FUNC(x) && FUNC_ISISR(x))
356 #define IFFUNC_RBANK(x) (IS_FUNC(x) && FUNC_RBANK(x))
357 #define FUNC_INTNO(x) (x->funcAttrs.intno)
358 #define FUNC_REGBANK(x) (x->funcAttrs.regbank)
359 #define FUNC_HASSTACKPARM(x) (x->funcAttrs.hasStackParms)
361 #define FUNC_ISREENT(x) (x->funcAttrs.reent)
362 #define IFFUNC_ISREENT(x) (IS_FUNC(x) && FUNC_ISREENT(x))
363 #define FUNC_ISSHADOWREGS(x) (x->funcAttrs.shadowregs)
364 #define IFFUNC_ISSHADOWREGS(x) (IS_FUNC(x) && FUNC_ISSHADOWREGS(x))
365 #define FUNC_ISWPARAM(x) (x->funcAttrs.wparam)
366 #define IFFUNC_ISWPARAM(x) (IS_FUNC(x) && FUNC_ISWPARAM(x))
367 #define FUNC_ISNAKED(x) (x->funcAttrs.naked)
368 #define IFFUNC_ISNAKED(x) (IS_FUNC(x) && FUNC_ISNAKED(x))
369 #define FUNC_NONBANKED(x) (x->funcAttrs.nonbanked)
370 #define IFFUNC_NONBANKED(x) (IS_FUNC(x) && FUNC_NONBANKED(x))
371 #define FUNC_BANKED(x) (x->funcAttrs.banked)
372 #define IFFUNC_BANKED(x) (IS_FUNC(x) && FUNC_BANKED(x))
373 #define FUNC_ISCRITICAL(x) (x->funcAttrs.critical)
374 #define IFFUNC_ISCRITICAL(x) (IS_FUNC(x) && FUNC_ISCRITICAL(x))
375 #define FUNC_ISBUILTIN(x) (x->funcAttrs.builtin)
376 #define IFFUNC_ISBUILTIN(x) (IS_FUNC(x) && FUNC_ISBUILTIN(x))
377 #define FUNC_ISJAVANATIVE(x) (x->funcAttrs.javaNative)
378 #define IFFUNC_ISJAVANATIVE(x) (IS_FUNC(x) && FUNC_ISJAVANATIVE(x))
379 #define FUNC_ISOVERLAY(x) (x->funcAttrs.overlay)
380 #define IFFUNC_ISOVERLAY(x) (IS_FUNC(x) && FUNC_ISOVERLAY(x))
382 #define IFFUNC_ISBANKEDCALL(x) (!IFFUNC_NONBANKED(x) && \
383 (options.model == MODEL_HUGE || \
384 ((options.model == MODEL_LARGE || options.model == MODEL_MEDIUM) && \
385 (TARGET_IS_Z80 || TARGET_IS_GBZ80)) || \
388 #define SPEC_NOUN(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.noun
389 #define SPEC_LONG(x) validateLink(x, "SPEC_LONG", #x, SPECIFIER, __FILE__, __LINE__)->select.s._long
390 #define SPEC_SHORT(x) validateLink(x, "SPEC_LONG", #x, SPECIFIER, __FILE__, __LINE__)->select.s._short
391 #define SPEC_USIGN(x) validateLink(x, "SPEC_USIGN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._unsigned
392 #define SPEC_SCLS(x) validateLink(x, "SPEC_SCLS", #x, SPECIFIER, __FILE__, __LINE__)->select.s.sclass
393 #define SPEC_ENUM(x) validateLink(x, "SPEC_ENUM", #x, SPECIFIER, __FILE__, __LINE__)->select.s._isenum
394 #define SPEC_OCLS(x) validateLink(x, "SPEC_OCLS", #x, SPECIFIER, __FILE__, __LINE__)->select.s.oclass
395 #define SPEC_STAT(x) validateLink(x, "SPEC_STAT", #x, SPECIFIER, __FILE__, __LINE__)->select.s._static
396 #define SPEC_EXTR(x) validateLink(x, "SPEC_EXTR", #x, SPECIFIER, __FILE__, __LINE__)->select.s._extern
397 #define SPEC_CODE(x) validateLink(x, "SPEC_CODE", #x, SPECIFIER, __FILE__, __LINE__)->select.s._codesg
398 #define SPEC_ABSA(x) validateLink(x, "SPEC_ABSA", #x, SPECIFIER, __FILE__, __LINE__)->select.s._absadr
399 #define SPEC_BANK(x) validateLink(x, "SPEC_BANK", #x, SPECIFIER, __FILE__, __LINE__)->select.s._regbank
400 #define SPEC_ADDR(x) validateLink(x, "SPEC_ADDR", #x, SPECIFIER, __FILE__, __LINE__)->select.s._addr
401 #define SPEC_STAK(x) validateLink(x, "SPEC_STAK", #x, SPECIFIER, __FILE__, __LINE__)->select.s._stack
402 #define SPEC_CVAL(x) validateLink(x, "SPEC_CVAL", #x, SPECIFIER, __FILE__, __LINE__)->select.s.const_val
403 #define SPEC_BSTR(x) validateLink(x, "SPEC_BSTR", #x, SPECIFIER, __FILE__, __LINE__)->select.s._bitStart
404 #define SPEC_BLEN(x) validateLink(x, "SPEC_BLEN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._bitLength
406 /* Sleaze: SPEC_ISR_SAVED_BANKS is only used on
407 * function type symbols, which obviously cannot
408 * be of BIT type. Therefore, we recycle the
409 * _bitStart field instead of defining a new field.
411 #define SPEC_ISR_SAVED_BANKS(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._bitStart
412 #define SPEC_VOLATILE(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._volatile
413 #define SPEC_CONST(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._const
414 #define SPEC_STRUCT(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.v_struct
415 #define SPEC_TYPEDEF(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._typedef
416 #define SPEC_REGPARM(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._isregparm
417 #define SPEC_ARGREG(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.argreg
419 /* type check macros */
420 #define IS_DECL(x) ( x && x->class == DECLARATOR )
421 #define IS_SPEC(x) ( x && x->class == SPECIFIER )
422 #define IS_ARRAY(x) (IS_DECL(x) && DCL_TYPE(x) == ARRAY)
423 #define IS_DATA_PTR(x) (IS_DECL(x) && DCL_TYPE(x) == POINTER)
424 #define IS_PTR(x) (IS_DECL(x) && (DCL_TYPE(x) == POINTER || \
425 DCL_TYPE(x) == FPOINTER || \
426 DCL_TYPE(x) == GPOINTER || \
427 DCL_TYPE(x) == IPOINTER || \
428 DCL_TYPE(x) == PPOINTER || \
429 DCL_TYPE(x) == EEPPOINTER || \
430 DCL_TYPE(x) == CPOINTER || \
431 DCL_TYPE(x) == UPOINTER ))
432 #define IS_PTR_CONST(x) (IS_PTR(x) && DCL_PTR_CONST(x))
433 #define IS_FARPTR(x) (IS_DECL(x) && DCL_TYPE(x) == FPOINTER)
434 #define IS_CODEPTR(x) (IS_DECL(x) && DCL_TYPE(x) == CPOINTER)
435 #define IS_GENPTR(x) (IS_DECL(x) && DCL_TYPE(x) == GPOINTER)
436 #define IS_FUNCPTR(x) (IS_DECL(x) && (DCL_TYPE(x) == CPOINTER || DCL_TYPE(x) == GPOINTER) && IS_FUNC(x->next))
437 #define IS_FUNC(x) (IS_DECL(x) && DCL_TYPE(x) == FUNCTION)
438 #define IS_LONG(x) (IS_SPEC(x) && x->select.s._long)
439 #define IS_UNSIGNED(x) (IS_SPEC(x) && x->select.s._unsigned)
440 #define IS_TYPEDEF(x)(IS_SPEC(x) && x->select.s._typedef)
441 #define IS_CONSTANT(x) (!x ? 0 : \
443 x->select.s._const : \
444 x->select.d.ptr_const)
445 #define IS_STRUCT(x) (IS_SPEC(x) && x->select.s.noun == V_STRUCT)
446 #define IS_ABSOLUTE(x) (IS_SPEC(x) && x->select.s._absadr )
447 #define IS_REGISTER(x) (IS_SPEC(x) && SPEC_SCLS(x) == S_REGISTER)
448 #define IS_RENT(x) (IS_SPEC(x) && x->select.s._reent )
449 #define IS_STATIC(x) (IS_SPEC(x) && SPEC_STAT(x))
450 #define IS_INT(x) (IS_SPEC(x) && x->select.s.noun == V_INT)
451 #define IS_VOID(x) (IS_SPEC(x) && x->select.s.noun == V_VOID)
452 #define IS_CHAR(x) (IS_SPEC(x) && x->select.s.noun == V_CHAR)
453 #define IS_EXTERN(x) (IS_SPEC(x) && x->select.s._extern)
454 #define IS_VOLATILE(x) (!x ? 0 : \
456 x->select.s._volatile : \
457 x->select.d.ptr_volatile)
458 #define IS_INTEGRAL(x) (IS_SPEC(x) && (x->select.s.noun == V_INT || \
459 x->select.s.noun == V_CHAR || \
460 x->select.s.noun == V_BITFIELD || \
461 x->select.s.noun == V_BIT || \
462 x->select.s.noun == V_SBIT ))
463 #define IS_BITFIELD(x) (IS_SPEC(x) && (x->select.s.noun == V_BITFIELD))
464 #define IS_BITVAR(x) (IS_SPEC(x) && (x->select.s.noun == V_BITFIELD || \
465 x->select.s.noun == V_BIT || \
466 x->select.s.noun == V_SBIT ))
467 #define IS_BIT(x) (IS_SPEC(x) && (x->select.s.noun == V_BIT || \
468 x->select.s.noun == V_SBIT ))
469 #define IS_FLOAT(x) (IS_SPEC(x) && x->select.s.noun == V_FLOAT)
470 #define IS_ARITHMETIC(x) (IS_INTEGRAL(x) || IS_FLOAT(x))
471 #define IS_AGGREGATE(x) (IS_ARRAY(x) || IS_STRUCT(x))
472 #define IS_LITERAL(x) (IS_SPEC(x) && x->select.s.sclass == S_LITERAL)
473 #define IS_CODE(x) (IS_SPEC(x) && SPEC_SCLS(x) == S_CODE)
474 #define IS_REGPARM(x) (IS_SPEC(x) && SPEC_REGPARM(x))
476 /* symbol check macros */
477 #define IS_AUTO(x) (x->level && !IS_STATIC(x->etype) && !IS_EXTERN(x->etype))
479 /* forward declaration for the global vars */
480 extern bucket *SymbolTab[];
481 extern bucket *StructTab[];
482 extern bucket *TypedefTab[];
483 extern bucket *LabelTab[];
484 extern bucket *enumTab[];
485 extern symbol *__fsadd;
486 extern symbol *__fssub;
487 extern symbol *__fsmul;
488 extern symbol *__fsdiv;
489 extern symbol *__fseq;
490 extern symbol *__fsneq;
491 extern symbol *__fslt;
492 extern symbol *__fslteq;
493 extern symbol *__fsgt;
494 extern symbol *__fsgteq;
496 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
497 extern symbol *__muldiv[3][3][2];
498 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
499 extern sym_link *__multypes[3][2];
500 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
501 extern symbol *__conv[2][3][2];
502 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
503 extern symbol *__rlrr[2][3][2];
505 #define CHARTYPE __multypes[0][0]
506 #define UCHARTYPE __multypes[0][1]
507 #define INTTYPE __multypes[1][0]
508 #define UINTTYPE __multypes[1][1]
509 #define LONGTYPE __multypes[2][0]
510 #define ULONGTYPE __multypes[2][1]
513 extern sym_link *floatType;
519 RESULT_TYPE_NONE = 0, /* operands will be promoted to int */
523 RESULT_TYPE_OTHER, /* operands will be promoted to int */
527 /* forward definitions for the symbol table related functions */
529 symbol *newSymbol (char *, int);
530 sym_link *newLink (SYM_LINK_CLASS);
531 sym_link *newFloatLink ();
532 structdef *newStruct (char *);
533 void addDecl (symbol *, int, sym_link *);
534 sym_link *mergeSpec (sym_link *, sym_link *, char *name);
535 symbol *reverseSyms (symbol *);
536 sym_link *reverseLink (sym_link *);
537 symbol *copySymbol (symbol *);
538 symbol *copySymbolChain (symbol *);
539 void printSymChain (symbol *, int);
540 void printStruct (structdef *, int);
541 char *genSymName (int);
542 sym_link *getSpec (sym_link *);
543 char *genSymName (int);
544 int compStructSize (int, structdef *);
545 sym_link *copyLinkChain (sym_link *);
546 int checkDecl (symbol *, int);
547 void checkBasic (sym_link *, sym_link *);
548 value *checkPointerIval (sym_link *, value *);
549 value *checkStructIval (symbol *, value *);
550 value *checkArrayIval (sym_link *, value *);
551 value *checkIval (sym_link *, value *);
552 unsigned int getSize (sym_link *);
553 unsigned int getAllocSize (sym_link *);
554 unsigned int bitsForType (sym_link *);
555 sym_link *newIntLink ();
556 sym_link *newCharLink ();
557 sym_link *newLongLink ();
558 int compareType (sym_link *, sym_link *);
559 int compareTypeExact (sym_link *, sym_link *, int);
560 int checkFunction (symbol *, symbol *);
561 void cleanUpLevel (bucket **, int);
562 void cleanUpBlock (bucket **, int);
563 int funcInChain (sym_link *);
564 void addSymChain (symbol **);
565 sym_link *structElemType (sym_link *, value *);
566 symbol *getStructElement (structdef *, symbol *);
567 sym_link *computeType (sym_link *, sym_link *, RESULT_TYPE, int);
568 void processFuncArgs (symbol *);
569 int isSymbolEqual (symbol *, symbol *);
570 int powof2 (TYPE_UDWORD);
571 void printTypeChain (sym_link *, FILE *);
572 void printTypeChainRaw (sym_link *, FILE *);
573 void initCSupport ();
574 void initBuiltIns ();
575 void pointerTypes (sym_link *, sym_link *);
576 void cdbStructBlock (int);
578 bucket *newBucket ();
579 void addSym (bucket **, void *, char *, int, int, int checkType);
580 void deleteSym (bucket **, void *, char *);
581 void *findSym (bucket **, void *, const char *);
582 void *findSymWithLevel (bucket **, struct symbol *);
583 void *findSymWithBlock (bucket **, struct symbol *, int);
584 void changePointer (sym_link * p);
585 void checkTypeSanity(sym_link *etype, char *name);
586 sym_link *typeFromStr (char *) ;
587 STORAGE_CLASS sclsFromPtr(sym_link *ptr);
588 sym_link *newEnumType (symbol *);
589 void promoteAnonStructs (int, structdef *);
592 extern char *nounName(sym_link *); /* noun strings */
593 extern void printFromToType (sym_link *, sym_link *);