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