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"
34 #define INTNO_MAX 255 /* maximum allowed interrupt number */
35 #define INTNO_UNSPEC (INTNO_MAX+1) /* interrupt number unspecified */
63 // values for first byte (or 3 most significant bits) of generic pointer.
65 #define GPTYPE_FAR 0x00
66 #define GPTYPE_NEAR 0x40
67 #define GPTYPE_XSTACK 0x60
68 #define GPTYPE_CODE 0x80
70 #define GPTYPE_FAR (port->gp_tags.tag_far)
71 #define GPTYPE_NEAR (port->gp_tags.tag_near)
72 #define GPTYPE_XSTACK (port->gp_tags.tag_xstack)
73 #define GPTYPE_CODE (port->gp_tags.tag_code)
76 #define HASHTAB_SIZE 256
78 /* hash table bucket */
81 void *sym; /* pointer to the object */
82 char name[SDCC_NAME_MAX + 1]; /* name of this symbol */
83 int level; /* nest level for this symbol */
84 int block; /* belongs to which block */
85 struct bucket *prev; /* ptr 2 previous bucket */
86 struct bucket *next; /* ptr 2 next bucket */
90 typedef struct structdef
92 char tag[SDCC_NAME_MAX + 1]; /* tag part of structure */
93 unsigned char level; /* Nesting level */
94 struct symbol *fields; /* pointer to fields */
95 unsigned size; /* sizeof the table in bytes */
96 int type; /* STRUCT or UNION */
97 bool b_flexArrayMember; /* has got an flexible array member,
98 only needed for syntax checks */
102 /* noun definitions */
140 #define TYPE_TARGET_CHAR TYPE_BYTE
141 #define TYPE_TARGET_INT TYPE_WORD
142 #define TYPE_TARGET_LONG TYPE_DWORD
143 #define TYPE_TARGET_UCHAR TYPE_UBYTE
144 #define TYPE_TARGET_UINT TYPE_UWORD
145 #define TYPE_TARGET_ULONG TYPE_UDWORD
147 /* specifier is the last in the type-chain */
148 typedef struct specifier
150 NOUN noun; /* CHAR INT STRUCTURE LABEL */
151 STORAGE_CLASS sclass; /* REGISTER,AUTO,FIX,CONSTANT */
152 struct memmap *oclass; /* output storage class */
153 unsigned b_long:1; /* 1=long */
154 unsigned b_short:1; /* 1=short int */
155 unsigned b_unsigned:1; /* 1=unsigned, 0=signed */
156 unsigned b_signed:1; /* just for sanity checks only*/
157 unsigned b_static:1; /* 1=static keyword found */
158 unsigned b_extern:1; /* 1=extern found */
159 unsigned b_absadr:1; /* absolute address specfied */
160 unsigned b_volatile:1; /* is marked as volatile */
161 unsigned b_const:1; /* is a constant */
162 unsigned b_restrict:1; /* is restricted */
163 unsigned b_typedef:1; /* is typedefed */
164 unsigned b_isregparm:1; /* is the first parameter */
165 unsigned b_isenum:1; /* is an enumerated type */
166 unsigned _addr; /* address of symbol */
167 unsigned _stack; /* stack offset for stacked v */
168 unsigned _bitStart; /* bit start position */
169 int _bitLength; /* bit length */
170 int argreg; /* reg no for regparm */
172 { /* Values if constant or enum */
173 TYPE_TARGET_INT v_int; /* 2 bytes: int and char values */
174 char *v_char; /* character string */
175 TYPE_TARGET_UINT v_uint; /* 2 bytes: unsigned int const value */
176 TYPE_TARGET_LONG v_long; /* 4 bytes: long constant value */
177 TYPE_TARGET_ULONG v_ulong; /* 4 bytes: unsigned long constant value */
178 double v_float; /* floating point constant value */
179 TYPE_TARGET_ULONG v_fixed16x16; /* 4 bytes: fixed floating point constant value */
180 struct symbol *v_enum; /* ptr to enum_list if enum==1 */
183 struct structdef *v_struct; /* structure pointer */
187 /* types of declarators */
190 POINTER = 0, /* pointer to near data */
191 FPOINTER, /* pointer to far data */
192 CPOINTER, /* pointer to code space */
193 GPOINTER, /* _generic pointer */
194 PPOINTER, /* paged area pointer */
195 IPOINTER, /* pointer to upper 128 bytes */
196 UPOINTER, /* unknown pointer used only when parsing */
197 EEPPOINTER, /* pointer to eeprom */
203 typedef struct declarator
205 DECLARATOR_TYPE dcl_type; /* POINTER,ARRAY or FUNCTION */
206 unsigned int num_elem; /* # of elems if type==array, */
207 /* always 0 for flexible arrays */
208 unsigned ptr_const:1; /* pointer is constant */
209 unsigned ptr_volatile:1; /* pointer is volatile */
210 unsigned ptr_restrict:1; /* pointer is resticted */
211 struct sym_link *tspec; /* pointer type specifier */
219 #define DECLSPEC2TXT(select) (select==DECLARATOR?"DECLARATOR":select==SPECIFIER?"SPECIFIER":"UNKNOW")
221 typedef struct sym_link
223 SYM_LINK_CLASS class; /* DECLARATOR or SPECIFIER */
224 unsigned tdef:1; /* current link created by */
225 /* typedef if this flag is set */
228 specifier s; /* if CLASS == SPECIFIER */
229 declarator d; /* if CLASS == DECLARATOR */
232 /* function attributes */
234 struct value *args; /* the defined arguments */
235 unsigned hasVargs:1; /* functions has varargs */
236 unsigned calleeSaves:1; /* functions uses callee save */
237 unsigned hasbody:1; /* function body defined */
238 unsigned hasFcall:1; /* does it call other functions */
239 unsigned reent:1; /* function is reentrant */
240 unsigned naked:1; /* naked function */
242 unsigned shadowregs:1; /* function uses shadow registers (pic16 port) */
243 unsigned wparam:1; /* first byte of arguments is passed via WREG (pic16 port) */
244 unsigned nonbanked:1; /* function has the nonbanked attribute */
245 unsigned banked:1; /* function has the banked attribute */
246 unsigned critical:1; /* critical function */
247 unsigned intrtn:1; /* this is an interrupt routine */
248 unsigned rbank:1; /* seperate register bank */
249 unsigned intno; /* 1=Interrupt svc routine */
250 short regbank; /* register bank 2b used */
251 unsigned builtin; /* is a builtin function */
252 unsigned javaNative; /* is a JavaNative Function (TININative ONLY) */
253 unsigned overlay; /* force parameters & locals into overlay segment */
254 unsigned hasStackParms; /* function has parameters on stack */
257 struct sym_link *next; /* next element on the chain */
261 typedef struct symbol
263 char name[SDCC_SYMNAME_MAX + 1]; /* Input Variable Name */
264 char rname[SDCC_NAME_MAX + 1]; /* internal name */
266 short level; /* declaration lev,fld offset */
267 short block; /* sequential block # of definition */
269 unsigned flexArrayLength; /* if the symbol specifies a struct
270 with a "flexible array member", then the additional length in bytes for
271 the "fam" is stored here. Because the lenght can be different from symbol
272 to symbol AND v_struct isn't copied in copyLinkChain(), it's located here
273 in the symbol and not in v_struct or the declarator */
274 unsigned implicit:1; /* implicit flag */
275 unsigned undefined:1; /* undefined variable */
276 unsigned infertype:1; /* type should be inferred from first assign */
277 unsigned _isparm:1; /* is a parameter */
278 unsigned ismyparm:1; /* is parameter of the function being generated */
279 unsigned isitmp:1; /* is an intermediate temp */
280 unsigned islbl:1; /* is a temporary label */
281 unsigned isref:1; /* has been referenced */
282 unsigned isind:1; /* is a induction variable */
283 unsigned isinvariant:1; /* is a loop invariant */
284 unsigned cdef:1; /* compiler defined symbol */
285 unsigned addrtaken:1; /* address of the symbol was taken */
286 unsigned isreqv:1; /* is the register equivalent of a symbol */
287 unsigned udChked:1; /* use def checking has been already done */
289 /* following flags are used by the backend
290 for code generation and can be changed
291 if a better scheme for backend is thought of */
292 unsigned isLiveFcall:1; /* is live at or across a function call */
293 unsigned isspilt:1; /* has to be spilt */
294 unsigned spillA:1; /* spilt be register allocator */
295 unsigned remat:1; /* can be remateriazed */
296 unsigned isptr:1; /* is a pointer */
297 unsigned uptr:1; /* used as a pointer */
298 unsigned isFree:1; /* used by register allocator */
299 unsigned islocal:1; /* is a local variable */
300 unsigned blockSpil:1; /* spilt at block level */
301 unsigned remainSpil:1; /* spilt because not used in remainder */
302 unsigned stackSpil:1; /* has been spilt on temp stack location */
303 unsigned onStack:1; /* this symbol allocated on the stack */
304 unsigned iaccess:1; /* indirect access */
305 unsigned ruonly:1; /* used in return statement only */
306 unsigned spildir:1; /* spilt in direct space */
307 unsigned ptrreg:1; /* this symbol assigned to a ptr reg */
308 unsigned noSpilLoc:1; /* cannot be assigned a spil location */
309 unsigned isstrlit; /* is a string literal and it's usage count */
310 unsigned accuse; /* can be left in the accumulator
311 On the Z80 accuse is divided into
312 ACCUSE_A and ACCUSE_HL as the idea
315 unsigned dptr; /* 8051 variants with multiple DPTRS
316 currently implemented in DS390 only
318 int allocreq ; /* allocation is required for this variable */
319 int stack; /* offset on stack */
320 int xstack; /* offset on xternal stack */
321 short nRegs; /* number of registers required */
322 short regType; /* type of register required */
324 struct regs *regs[4]; /* can have at the most 4 registers */
325 struct asmop *aop; /* asmoperand for this symbol */
326 struct iCode *fuse; /* furthest use */
327 struct iCode *rematiCode; /* rematerialise with which instruction */
328 struct operand *reqv; /* register equivalent of a local variable */
329 struct symbol *prereqv; /* symbol before register equiv. substituion */
330 struct symbol *psbase; /* if pseudo symbol, the symbol it is based on */
333 struct symbol *spillLoc; /* register spil location */
334 struct set *itmpStack; /* symbols spilt @ this stack location */
337 short bitVar; /* this is a bit variable */
338 unsigned offset; /* offset from top if struct */
340 int lineDef; /* defined line number */
341 char *fileDef; /* defined filename */
342 int lastLine; /* for functions the last line */
343 struct sym_link *type; /* 1st link to declarator chain */
344 struct sym_link *etype; /* last link to declarator chain */
345 struct symbol *next; /* crosslink to next symbol */
346 struct symbol *localof; /* local variable of which function */
347 struct initList *ival; /* ptr to initializer if any */
348 struct bitVect *defs; /* bit vector for definitions */
349 struct bitVect *uses; /* bit vector for uses */
350 struct bitVect *regsUsed; /* for functions registers used */
351 int liveFrom; /* live from iCode sequence number */
352 int liveTo; /* live to sequence number */
353 int used; /* no. of times this was used */
354 int recvSize; /* size of first argument */
355 struct bitVect *clashes; /* overlaps with what other symbols */
359 extern sym_link *validateLink(sym_link *l,
365 /* Easy Access Macros */
366 #define DCL_TYPE(l) validateLink(l, "DCL_TYPE", #l, DECLARATOR, __FILE__, __LINE__)->select.d.dcl_type
367 #define DCL_ELEM(l) validateLink(l, "DCL_ELEM", #l, DECLARATOR, __FILE__, __LINE__)->select.d.num_elem
368 #define DCL_PTR_CONST(l) validateLink(l, "DCL_PTR_CONST", #l, DECLARATOR, __FILE__, __LINE__)->select.d.ptr_const
369 #define DCL_PTR_VOLATILE(l) validateLink(l, "DCL_PTR_VOLATILE", #l, DECLARATOR, __FILE__, __LINE__)->select.d.ptr_volatile
370 #define DCL_PTR_RESTRICT(l) validateLink(l, "DCL_PTR_RESTRICT", #l, DECLARATOR, __FILE__, __LINE__)->select.d.ptr_restrict
371 #define DCL_TSPEC(l) validateLink(l, "DCL_TSPEC", #l, DECLARATOR, __FILE__, __LINE__)->select.d.tspec
373 #define FUNC_DEBUG //assert(IS_FUNC(x));
374 #define FUNC_HASVARARGS(x) (x->funcAttrs.hasVargs)
375 #define IFFUNC_HASVARARGS(x) (IS_FUNC(x) && FUNC_HASVARARGS(x))
376 #define FUNC_ARGS(x) (x->funcAttrs.args)
377 #define IFFUNC_ARGS(x) (IS_FUNC(x) && FUNC_ARGS(x))
378 #define FUNC_HASFCALL(x) (x->funcAttrs.hasFcall)
379 #define IFFUNC_HASFCALL(x) (IS_FUNC(x) && FUNC_HASFCALL(x))
380 #define FUNC_HASBODY(x) (x->funcAttrs.hasbody)
381 #define IFFUNC_HASBODY(x) (IS_FUNC(x) && FUNC_HASBODY(x))
382 #define FUNC_CALLEESAVES(x) (x->funcAttrs.calleeSaves)
383 #define IFFUNC_CALLEESAVES(x) (IS_FUNC(x) && FUNC_CALLEESAVES(x))
384 #define FUNC_ISISR(x) (x->funcAttrs.intrtn)
385 #define IFFUNC_ISISR(x) (IS_FUNC(x) && FUNC_ISISR(x))
386 #define IFFUNC_RBANK(x) (IS_FUNC(x) && FUNC_RBANK(x))
387 #define FUNC_INTNO(x) (x->funcAttrs.intno)
388 #define FUNC_REGBANK(x) (x->funcAttrs.regbank)
389 #define FUNC_HASSTACKPARM(x) (x->funcAttrs.hasStackParms)
391 #define FUNC_ISREENT(x) (x->funcAttrs.reent)
392 #define IFFUNC_ISREENT(x) (IS_FUNC(x) && FUNC_ISREENT(x))
393 #define FUNC_ISSHADOWREGS(x) (x->funcAttrs.shadowregs)
394 #define IFFUNC_ISSHADOWREGS(x) (IS_FUNC(x) && FUNC_ISSHADOWREGS(x))
395 #define FUNC_ISWPARAM(x) (x->funcAttrs.wparam)
396 #define IFFUNC_ISWPARAM(x) (IS_FUNC(x) && FUNC_ISWPARAM(x))
397 #define FUNC_ISNAKED(x) (x->funcAttrs.naked)
398 #define IFFUNC_ISNAKED(x) (IS_FUNC(x) && FUNC_ISNAKED(x))
399 #define FUNC_NONBANKED(x) (x->funcAttrs.nonbanked)
400 #define IFFUNC_NONBANKED(x) (IS_FUNC(x) && FUNC_NONBANKED(x))
401 #define FUNC_BANKED(x) (x->funcAttrs.banked)
402 #define IFFUNC_BANKED(x) (IS_FUNC(x) && FUNC_BANKED(x))
403 #define FUNC_ISCRITICAL(x) (x->funcAttrs.critical)
404 #define IFFUNC_ISCRITICAL(x) (IS_FUNC(x) && FUNC_ISCRITICAL(x))
405 #define FUNC_ISBUILTIN(x) (x->funcAttrs.builtin)
406 #define IFFUNC_ISBUILTIN(x) (IS_FUNC(x) && FUNC_ISBUILTIN(x))
407 #define FUNC_ISJAVANATIVE(x) (x->funcAttrs.javaNative)
408 #define IFFUNC_ISJAVANATIVE(x) (IS_FUNC(x) && FUNC_ISJAVANATIVE(x))
409 #define FUNC_ISOVERLAY(x) (x->funcAttrs.overlay)
410 #define IFFUNC_ISOVERLAY(x) (IS_FUNC(x) && FUNC_ISOVERLAY(x))
412 #define IFFUNC_ISBANKEDCALL(x) (!IFFUNC_NONBANKED(x) && \
413 (options.model == MODEL_HUGE || \
414 ((options.model == MODEL_LARGE || options.model == MODEL_MEDIUM) && \
415 (TARGET_IS_Z80 || TARGET_IS_GBZ80)) || \
418 #define SPEC_NOUN(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.noun
419 #define SPEC_LONG(x) validateLink(x, "SPEC_LONG", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_long
420 #define SPEC_SHORT(x) validateLink(x, "SPEC_LONG", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_short
421 #define SPEC_USIGN(x) validateLink(x, "SPEC_USIGN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_unsigned
422 #define SPEC_SCLS(x) validateLink(x, "SPEC_SCLS", #x, SPECIFIER, __FILE__, __LINE__)->select.s.sclass
423 #define SPEC_ENUM(x) validateLink(x, "SPEC_ENUM", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_isenum
424 #define SPEC_OCLS(x) validateLink(x, "SPEC_OCLS", #x, SPECIFIER, __FILE__, __LINE__)->select.s.oclass
425 #define SPEC_STAT(x) validateLink(x, "SPEC_STAT", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_static
426 #define SPEC_EXTR(x) validateLink(x, "SPEC_EXTR", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_extern
427 #define SPEC_CODE(x) validateLink(x, "SPEC_CODE", #x, SPECIFIER, __FILE__, __LINE__)->select.s._codesg
428 #define SPEC_ABSA(x) validateLink(x, "SPEC_ABSA", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_absadr
429 #define SPEC_BANK(x) validateLink(x, "SPEC_BANK", #x, SPECIFIER, __FILE__, __LINE__)->select.s._regbank
430 #define SPEC_ADDR(x) validateLink(x, "SPEC_ADDR", #x, SPECIFIER, __FILE__, __LINE__)->select.s._addr
431 #define SPEC_STAK(x) validateLink(x, "SPEC_STAK", #x, SPECIFIER, __FILE__, __LINE__)->select.s._stack
432 #define SPEC_CVAL(x) validateLink(x, "SPEC_CVAL", #x, SPECIFIER, __FILE__, __LINE__)->select.s.const_val
433 #define SPEC_BSTR(x) validateLink(x, "SPEC_BSTR", #x, SPECIFIER, __FILE__, __LINE__)->select.s._bitStart
434 #define SPEC_BLEN(x) validateLink(x, "SPEC_BLEN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._bitLength
436 /* Sleaze: SPEC_ISR_SAVED_BANKS is only used on
437 * function type symbols, which obviously cannot
438 * be of BIT type. Therefore, we recycle the
439 * _bitStart field instead of defining a new field.
441 #define SPEC_ISR_SAVED_BANKS(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s._bitStart
442 #define SPEC_VOLATILE(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_volatile
443 #define SPEC_CONST(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_const
444 #define SPEC_RESTRICT(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_restrict
445 #define SPEC_STRUCT(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.v_struct
446 #define SPEC_TYPEDEF(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_typedef
447 #define SPEC_REGPARM(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.b_isregparm
448 #define SPEC_ARGREG(x) validateLink(x, "SPEC_NOUN", #x, SPECIFIER, __FILE__, __LINE__)->select.s.argreg
450 /* type check macros */
451 #define IS_DECL(x) ( x && x->class == DECLARATOR )
452 #define IS_SPEC(x) ( x && x->class == SPECIFIER )
453 #define IS_ARRAY(x) (IS_DECL(x) && DCL_TYPE(x) == ARRAY)
454 #define IS_DATA_PTR(x) (IS_DECL(x) && DCL_TYPE(x) == POINTER)
455 #define IS_PTR(x) (IS_DECL(x) && (DCL_TYPE(x) == POINTER || \
456 DCL_TYPE(x) == FPOINTER || \
457 DCL_TYPE(x) == GPOINTER || \
458 DCL_TYPE(x) == IPOINTER || \
459 DCL_TYPE(x) == PPOINTER || \
460 DCL_TYPE(x) == EEPPOINTER || \
461 DCL_TYPE(x) == CPOINTER || \
462 DCL_TYPE(x) == UPOINTER ))
463 #define IS_PTR_CONST(x) (IS_PTR(x) && DCL_PTR_CONST(x))
464 #define IS_PTR_RESTRICT(x) (IS_PTR(x) && DCL_PTR_RESTRICT(x))
465 #define IS_FARPTR(x) (IS_DECL(x) && DCL_TYPE(x) == FPOINTER)
466 #define IS_CODEPTR(x) (IS_DECL(x) && DCL_TYPE(x) == CPOINTER)
467 #define IS_GENPTR(x) (IS_DECL(x) && DCL_TYPE(x) == GPOINTER)
468 #define IS_FUNCPTR(x) (IS_DECL(x) && (DCL_TYPE(x) == CPOINTER || DCL_TYPE(x) == GPOINTER) && IS_FUNC(x->next))
469 #define IS_FUNC(x) (IS_DECL(x) && DCL_TYPE(x) == FUNCTION)
470 #define IS_LONG(x) (IS_SPEC(x) && x->select.s.b_long)
471 #define IS_UNSIGNED(x) (IS_SPEC(x) && x->select.s.b_unsigned)
472 #define IS_TYPEDEF(x)(IS_SPEC(x) && x->select.s.b_typedef)
473 #define IS_CONSTANT(x) (!x ? 0 : \
475 x->select.s.b_const : \
476 x->select.d.ptr_const)
477 #define IS_STRUCT(x) (IS_SPEC(x) && x->select.s.noun == V_STRUCT)
478 #define IS_ABSOLUTE(x) (IS_SPEC(x) && x->select.s.b_absadr )
479 #define IS_REGISTER(x) (IS_SPEC(x) && SPEC_SCLS(x) == S_REGISTER)
480 #define IS_RENT(x) (IS_SPEC(x) && x->select.s._reent )
481 #define IS_STATIC(x) (IS_SPEC(x) && SPEC_STAT(x))
482 #define IS_INT(x) (IS_SPEC(x) && x->select.s.noun == V_INT)
483 #define IS_VOID(x) (IS_SPEC(x) && x->select.s.noun == V_VOID)
484 #define IS_CHAR(x) (IS_SPEC(x) && x->select.s.noun == V_CHAR)
485 #define IS_EXTERN(x) (IS_SPEC(x) && x->select.s.b_extern)
486 #define IS_VOLATILE(x) (!x ? 0 : \
488 x->select.s.b_volatile : \
489 x->select.d.ptr_volatile)
490 #define IS_INTEGRAL(x) (IS_SPEC(x) && (x->select.s.noun == V_INT || \
491 x->select.s.noun == V_CHAR || \
492 x->select.s.noun == V_BITFIELD || \
493 x->select.s.noun == V_BIT || \
494 x->select.s.noun == V_SBIT ))
495 #define IS_BITFIELD(x) (IS_SPEC(x) && (x->select.s.noun == V_BITFIELD))
496 #define IS_BITVAR(x) (IS_SPEC(x) && (x->select.s.noun == V_BITFIELD || \
497 x->select.s.noun == V_BIT || \
498 x->select.s.noun == V_SBIT ))
499 #define IS_BIT(x) (IS_SPEC(x) && (x->select.s.noun == V_BIT || \
500 x->select.s.noun == V_SBIT ))
501 #define IS_FLOAT(x) (IS_SPEC(x) && x->select.s.noun == V_FLOAT)
502 #define IS_FIXED16X16(x) (IS_SPEC(x) && x->select.s.noun == V_FIXED16X16)
503 #define IS_FIXED(x) (IS_FIXED16X16(x))
504 #define IS_ARITHMETIC(x) (IS_INTEGRAL(x) || IS_FLOAT(x) || IS_FIXED(x))
505 #define IS_AGGREGATE(x) (IS_ARRAY(x) || IS_STRUCT(x))
506 #define IS_LITERAL(x) (IS_SPEC(x) && x->select.s.sclass == S_LITERAL)
507 #define IS_CODE(x) (IS_SPEC(x) && SPEC_SCLS(x) == S_CODE)
508 #define IS_REGPARM(x) (IS_SPEC(x) && SPEC_REGPARM(x))
510 /* symbol check macros */
511 #define IS_AUTO(x) (x->level && !IS_STATIC(x->etype) && !IS_EXTERN(x->etype))
513 /* forward declaration for the global vars */
514 extern bucket *SymbolTab[];
515 extern bucket *StructTab[];
516 extern bucket *TypedefTab[];
517 extern bucket *LabelTab[];
518 extern bucket *enumTab[];
519 extern symbol *__fsadd;
520 extern symbol *__fssub;
521 extern symbol *__fsmul;
522 extern symbol *__fsdiv;
523 extern symbol *__fseq;
524 extern symbol *__fsneq;
525 extern symbol *__fslt;
526 extern symbol *__fslteq;
527 extern symbol *__fsgt;
528 extern symbol *__fsgteq;
530 extern symbol *__fps16x16_add;
531 extern symbol *__fps16x16_sub;
532 extern symbol *__fps16x16_mul;
533 extern symbol *__fps16x16_div;
534 extern symbol *__fps16x16_eq;
535 extern symbol *__fps16x16_neq;
536 extern symbol *__fps16x16_lt;
537 extern symbol *__fps16x16_lteq;
538 extern symbol *__fps16x16_gt;
539 extern symbol *__fps16x16_gteq;
541 /* Dims: mul/div/mod, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
542 extern symbol *__muldiv[3][3][2];
543 /* Dims: BYTE/WORD/DWORD SIGNED/UNSIGNED */
544 extern sym_link *__multypes[3][2];
545 /* Dims: to/from float, BYTE/WORD/DWORD, SIGNED/USIGNED */
546 extern symbol *__conv[2][3][2];
547 /* Dims: to/from fixed16x16, BYTE/WORD/DWORD/FLOAT, SIGNED/USIGNED */
548 extern symbol *__fp16x16conv[2][4][2];
549 /* Dims: shift left/shift right, BYTE/WORD/DWORD, SIGNED/UNSIGNED */
550 extern symbol *__rlrr[2][3][2];
552 #define CHARTYPE __multypes[0][0]
553 #define UCHARTYPE __multypes[0][1]
554 #define INTTYPE __multypes[1][0]
555 #define UINTTYPE __multypes[1][1]
556 #define LONGTYPE __multypes[2][0]
557 #define ULONGTYPE __multypes[2][1]
559 extern sym_link *floatType;
560 extern sym_link *fixed16x16Type;
566 RESULT_TYPE_NONE = 0, /* operands will be promoted to int */
570 RESULT_TYPE_OTHER, /* operands will be promoted to int */
574 /* forward definitions for the symbol table related functions */
576 symbol *newSymbol (char *, int);
577 sym_link *newLink (SYM_LINK_CLASS);
578 sym_link *newFloatLink ();
579 structdef *newStruct (char *);
580 void addDecl (symbol *, int, sym_link *);
581 sym_link *mergeSpec (sym_link *, sym_link *, char *name);
582 symbol *reverseSyms (symbol *);
583 sym_link *reverseLink (sym_link *);
584 symbol *copySymbol (symbol *);
585 symbol *copySymbolChain (symbol *);
586 void printSymChain (symbol *, int);
587 void printStruct (structdef *, int);
588 char *genSymName (int);
589 sym_link *getSpec (sym_link *);
590 int compStructSize (int, structdef *);
591 sym_link *copyLinkChain (sym_link *);
592 int checkDecl (symbol *, int);
593 void checkBasic (sym_link *, sym_link *);
594 value *checkPointerIval (sym_link *, value *);
595 value *checkStructIval (symbol *, value *);
596 value *checkArrayIval (sym_link *, value *);
597 value *checkIval (sym_link *, value *);
598 unsigned int getSize (sym_link *);
599 unsigned int bitsForType (sym_link *);
600 sym_link *newIntLink ();
601 sym_link *newCharLink ();
602 sym_link *newLongLink ();
603 sym_link *newBoolLink ();
604 int compareType (sym_link *, sym_link *);
605 int compareTypeExact (sym_link *, sym_link *, int);
606 int checkFunction (symbol *, symbol *);
607 void cleanUpLevel (bucket **, int);
608 void cleanUpBlock (bucket **, int);
609 int funcInChain (sym_link *);
610 void addSymChain (symbol **);
611 sym_link *structElemType (sym_link *, value *);
612 symbol *getStructElement (structdef *, symbol *);
613 sym_link *computeType (sym_link *, sym_link *, RESULT_TYPE, int);
614 void processFuncPtrArgs (sym_link *);
615 void processFuncArgs (symbol *);
616 int isSymbolEqual (symbol *, symbol *);
617 int powof2 (TYPE_TARGET_ULONG);
618 void dbuf_printTypeChain (sym_link *, struct dbuf_s *);
619 void printTypeChain (sym_link *, FILE *);
620 void printTypeChainRaw (sym_link *, FILE *);
621 void initCSupport ();
622 void initBuiltIns ();
623 void pointerTypes (sym_link *, sym_link *);
624 void cdbStructBlock (int);
626 bucket *newBucket ();
627 void addSym (bucket **, void *, char *, int, int, int checkType);
628 void deleteSym (bucket **, void *, char *);
629 void *findSym (bucket **, void *, const char *);
630 void *findSymWithLevel (bucket **, struct symbol *);
631 void *findSymWithBlock (bucket **, struct symbol *, int);
632 void changePointer (sym_link * p);
633 void checkTypeSanity(sym_link *etype, char *name);
634 sym_link *typeFromStr (char *) ;
635 STORAGE_CLASS sclsFromPtr(sym_link *ptr);
636 sym_link *newEnumType (symbol *);
637 void promoteAnonStructs (int, structdef *);
640 extern char *nounName(sym_link *); /* noun strings */
641 extern void printFromToType (sym_link *, sym_link *);