1 /*-----------------------------------------------------------------------
2 SDCC.lex - lexical analyser for use with sdcc ( a freeware compiler for
3 8/16 bit microcontrollers)
4 Written by : Sandeep Dutta . sandeep.dutta@usa.net (1997)
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 In other words, you are welcome to use, share and improve this program.
21 You are forbidden to forbid anyone else to use, share and improve
22 what you give them. Help stamp out software-hoarding!
23 -------------------------------------------------------------------------*/
40 char *stringLiteral();
43 extern int lineno, column;
44 extern char *filename ;
47 int process_pragma(char *);
50 int yywrap YY_PROTO((void))
54 #define TKEYWORD(token) return (isTargetKeyword(yytext) ? token :\
59 extern int check_type ();
60 extern int isTargetKeyword ();
61 extern int checkCurrFile (char *);
62 extern int processPragma (char *);
63 extern int printListing (int );
64 struct optimize save_optimize ;
65 struct options save_options ;
81 P_OVERLAY_ /* I had a strange conflict with P_OVERLAY while */
82 /* cross-compiling for MINGW32 with gcc 3.2 */
90 asmp = asmbuff = realloc (asmbuff, INITIAL_INLINEASM);
91 asmbuffSize=INITIAL_INLINEASM;
97 yylval.yyinline = strdup (asmbuff);
102 if (asmp-asmbuff >= asmbuffSize-2) {
103 // increase the buffersize with 50%
104 int size=asmp-asmbuff;
105 asmbuffSize=asmbuffSize*3/2;
106 asmbuff = realloc (asmbuff, asmbuffSize);
113 if (asmp-asmbuff >= asmbuffSize-3) {
114 // increase the buffersize with 50%
115 int size=asmp-asmbuff;
116 asmbuffSize=asmbuffSize*3/2;
117 asmbuff = realloc (asmbuff, asmbuffSize);
122 "at" { count(); TKEYWORD(AT) ; }
123 "auto" { count(); return(AUTO); }
124 "bit" { count(); TKEYWORD(BIT) ; }
125 "break" { count(); return(BREAK); }
126 "case" { count(); return(CASE); }
127 "char" { count(); return(CHAR); }
128 "code" { count(); TKEYWORD(CODE); }
129 "const" { count(); return(CONST); }
130 "continue" { count(); return(CONTINUE); }
131 "critical" { count(); TKEYWORD(CRITICAL); }
132 "data" { count(); TKEYWORD(DATA); }
133 "default" { count(); return(DEFAULT); }
134 "do" { count(); return(DO); }
135 "double" { count(); werror(W_DOUBLE_UNSUPPORTED);return(FLOAT); }
136 "else" { count(); return(ELSE); }
137 "enum" { count(); return(ENUM); }
138 "extern" { count(); return(EXTERN); }
139 "far" { count(); TKEYWORD(XDATA); }
140 "eeprom" { count(); TKEYWORD(EEPROM); }
141 "float" { count(); return(FLOAT); }
142 "flash" { count(); TKEYWORD(CODE);}
143 "for" { count(); return(FOR); }
144 "goto" { count(); return(GOTO); }
145 "idata" { count(); TKEYWORD(IDATA);}
146 "if" { count(); return(IF); }
147 "int" { count(); return(INT); }
148 "interrupt" { count(); return(INTERRUPT);}
149 "nonbanked" { count(); TKEYWORD(NONBANKED);}
150 "banked" { count(); TKEYWORD(BANKED);}
151 "long" { count(); return(LONG); }
152 "near" { count(); TKEYWORD(DATA);}
153 "pdata" { count(); TKEYWORD(PDATA); }
154 "reentrant" { count(); TKEYWORD(REENTRANT);}
155 "register" { count(); return(REGISTER); }
156 "return" { count(); return(RETURN); }
157 "sfr" { count(); TKEYWORD(SFR) ; }
158 "sbit" { count(); TKEYWORD(SBIT) ; }
159 "short" { count(); return(SHORT); }
160 "signed" { count(); return(SIGNED); }
161 "sizeof" { count(); return(SIZEOF); }
162 "sram" { count(); TKEYWORD(XDATA);}
163 "static" { count(); return(STATIC); }
164 "struct" { count(); return(STRUCT); }
165 "switch" { count(); return(SWITCH); }
166 "typedef" { count(); return(TYPEDEF); }
167 "union" { count(); return(UNION); }
168 "unsigned" { count(); return(UNSIGNED); }
169 "void" { count(); return(VOID); }
170 "volatile" { count(); return(VOLATILE); }
171 "using" { count(); TKEYWORD(USING); }
172 "_naked" { count(); TKEYWORD(NAKED); }
173 "while" { count(); return(WHILE); }
174 "xdata" { count(); TKEYWORD(XDATA); }
175 "..." { count(); return(VAR_ARGS);}
176 "__typeof" { count(); return TYPEOF;}
177 "_JavaNative" { count(); TKEYWORD(JAVANATIVE);}
178 "_overlay" { count(); TKEYWORD(OVERLAY);}
179 {L}({L}|{D})* { count(); return(check_type()); }
180 0[xX]{H}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
181 0{D}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
182 {D}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
183 '(\\.|[^\\'])+' { count();yylval.val = charVal (yytext); return(CONSTANT); /* ' make syntax highliter happy */}
184 {D}+{E}{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
185 {D}*"."{D}+({E})?{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
186 {D}+"."{D}*({E})?{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
187 \" { count(); yylval.val=strVal(stringLiteral()); return(STRING_LITERAL);}
188 ">>=" { count(); yylval.yyint = RIGHT_ASSIGN ; return(RIGHT_ASSIGN); }
189 "<<=" { count(); yylval.yyint = LEFT_ASSIGN ; return(LEFT_ASSIGN) ; }
190 "+=" { count(); yylval.yyint = ADD_ASSIGN ; return(ADD_ASSIGN) ; }
191 "-=" { count(); yylval.yyint = SUB_ASSIGN ; return(SUB_ASSIGN) ; }
192 "*=" { count(); yylval.yyint = MUL_ASSIGN ; return(MUL_ASSIGN) ; }
193 "/=" { count(); yylval.yyint = DIV_ASSIGN ; return(DIV_ASSIGN) ; }
194 "%=" { count(); yylval.yyint = MOD_ASSIGN ; return(MOD_ASSIGN) ; }
195 "&=" { count(); yylval.yyint = AND_ASSIGN ; return(AND_ASSIGN) ; }
196 "^=" { count(); yylval.yyint = XOR_ASSIGN ; return(XOR_ASSIGN) ; }
197 "|=" { count(); yylval.yyint = OR_ASSIGN ; return(OR_ASSIGN) ; }
198 ">>" { count(); return(RIGHT_OP); }
199 "<<" { count(); return(LEFT_OP); }
200 "++" { count(); return(INC_OP); }
201 "--" { count(); return(DEC_OP); }
202 "->" { count(); return(PTR_OP); }
203 "&&" { count(); return(AND_OP); }
204 "||" { count(); return(OR_OP); }
205 "<=" { count(); return(LE_OP); }
206 ">=" { count(); return(GE_OP); }
207 "==" { count(); return(EQ_OP); }
208 "!=" { count(); return(NE_OP); }
209 ";" { count(); return(';'); }
210 "{" { count(); NestLevel++ ; return('{'); }
211 "}" { count(); NestLevel--; return('}'); }
212 "," { count(); return(','); }
213 ":" { count(); return(':'); }
214 "=" { count(); return('='); }
215 "(" { count(); return('('); }
216 ")" { count(); return(')'); }
217 "[" { count(); return('['); }
218 "]" { count(); return(']'); }
219 "." { count(); return('.'); }
220 "&" { count(); return('&'); }
221 "!" { count(); return('!'); }
222 "~" { count(); return('~'); }
223 "-" { count(); return('-'); }
224 "+" { count(); return('+'); }
225 "*" { count(); return('*'); }
226 "/" { count(); return('/'); }
227 "%" { count(); return('%'); }
228 "<" { count(); return('<'); }
229 ">" { count(); return('>'); }
230 "^" { count(); return('^'); }
231 "|" { count(); return('|'); }
232 "?" { count(); return('?'); }
233 ^#line.*"\n" { count(); checkCurrFile(yytext); }
234 ^#pragma.*"\n" { count(); process_pragma(yytext); }
236 ^[^(]+"("[0-9]+") : error"[^\n]+ { werror(E_PRE_PROC_FAILED,yytext);count(); }
237 ^[^(]+"("[0-9]+") : warning"[^\n]+ { werror(W_PRE_PROC_WARNING,yytext);count(); }
240 [ \t\v\f] { count(); }
244 // that could have been removed by the preprocessor anyway
245 werror (W_STRAY_BACKSLASH, column);
252 int checkCurrFile ( char *s)
258 /* first check if this is a #line */
259 if ( strncmp(s,"#line",5) )
262 /* get to the line number */
269 sscanf(lineNum,"%d",&lNum);
271 /* now see if we have a file name */
272 while (*s != '\"' && *s)
275 /* if we don't have a filename then */
276 /* set the current line number to */
277 /* line number if printFlag is on */
279 lineno = yylineno = lNum ;
283 /* if we have a filename then check */
284 /* if it is "standard in" if yes then */
285 /* get the currentfile name info */
288 /* in c1mode fullSrcFileName is NULL */
289 if ( fullSrcFileName &&
290 strncmp(s,fullSrcFileName,strlen(fullSrcFileName)) == 0) {
291 lineno = yylineno = lNum;
292 currFname = fullSrcFileName ;
295 /* mark the end of the filename */
296 while (*s != '"') s++;
298 currFname = strdup (sb);
299 lineno = yylineno = lNum;
301 filename = currFname ;
311 for (i = 0; yytext[i] != '\0'; i++) {
312 if (yytext[i] == '\n') {
314 lineno = ++yylineno ;
317 if (yytext[i] == '\t')
318 column += 8 - (column % 8);
327 /* check if it is in the typedef table */
328 if (findSym(TypedefTab,NULL,yytext)) {
329 strncpyz(yylval.yychar,yytext, SDCC_NAME_MAX);
333 strncpyz (yylval.yychar,yytext, SDCC_NAME_MAX);
339 * Change by JTV 2001-05-19 to not concantenate strings
340 * to support ANSI hex and octal escape sequences in string liteals
343 char *stringLiteral()
345 #define STR_BUF_CHUNCK_LEN 1024
347 static struct dbuf_s dbuf;
351 dbuf_init(&dbuf, STR_BUF_CHUNCK_LEN);
353 dbuf_set_size(&dbuf, 0);
356 dbuf_append(&dbuf, "\"", 1);
357 /* put into the buffer till we hit the first \" */
359 while ((ch = input()) != 0) {
362 /* if it is a \ then escape char's are allowed */
365 /* \<newline> is a continuator */
372 dbuf_append(&dbuf, buf, 2); /* get the escape char, no further check */
374 break; /* carry on */
377 /* if new line we have a new line break, which is illegal */
378 werror(W_NEWLINE_IN_STRING);
379 dbuf_append(&dbuf, "\n", 1);
385 /* if this is a quote then we have work to do */
386 /* find the next non whitespace character */
387 /* if that is a double quote then carry on */
388 dbuf_append(&dbuf, "\"", 1); /* Pass end of this string or substring to evaluator */
389 while ((ch = input()) && (isspace(ch) || ch=='\\')) {
392 if ((ch = input()) != '\n') {
393 werror(W_STRAY_BACKSLASH, column);
419 dbuf_append(&dbuf, buf, 1); /* Put next substring introducer into output string */
424 return (char *)dbuf_c_str(&dbuf);
427 void doPragma (int op, char *cp)
431 memcpy(&save_options,&options,sizeof(options));
432 memcpy(&save_optimize,&optimize,sizeof(optimize));
435 memcpy(&options,&save_options,sizeof(options));
436 memcpy(&optimize,&save_optimize,sizeof(optimize));
439 optimize.loopInduction = 0 ;
442 optimize.loopInvariant = 0 ;
445 optimize.loopInduction = 1 ;
448 options.stackAuto = 1;
451 optimize.noJTabBoundary = 1;
454 optimize.global_cse = 0;
457 options.noOverlay = 1;
462 /* append to the functions already listed
464 for (; options.calleeSaves[i] ;i++);
465 parseWithComma(&options.calleeSaves[i], Safe_strdup(cp));
469 parseWithComma(options.excludeRegs, Safe_strdup(cp));
475 optimize.noLoopReverse = 1;
482 int process_pragma(char *s)
485 /* find the pragma */
486 while (strncmp(s,"#pragma",7))
490 /* look for the directive */
491 while(isspace(*s)) s++;
494 /* look for the end of the directive */
495 while ((! isspace(*s)) &&
499 /* First give the port a chance */
500 if (port->process_pragma && !port->process_pragma(cp))
503 /* now compare and do what needs to be done */
504 if (strncmp(cp,PRAGMA_SAVE,strlen(PRAGMA_SAVE)) == 0) {
505 doPragma(P_SAVE,cp+strlen(PRAGMA_SAVE));
509 if (strncmp(cp,PRAGMA_RESTORE,strlen(PRAGMA_RESTORE)) == 0) {
510 doPragma (P_RESTORE,cp+strlen(PRAGMA_RESTORE));
514 if (strncmp(cp,PRAGMA_NOINDUCTION,strlen(PRAGMA_NOINDUCTION)) == 0) {
515 doPragma (P_NOINDUCTION,cp+strlen(PRAGMA_NOINDUCTION)) ;
519 if (strncmp(cp,PRAGMA_NOINVARIANT,strlen(PRAGMA_NOINVARIANT)) == 0) {
520 doPragma (P_NOINVARIANT,NULL) ;
524 if (strncmp(cp,PRAGMA_INDUCTION,strlen(PRAGMA_INDUCTION)) == 0) {
525 doPragma (P_INDUCTION,NULL) ;
529 if (strncmp(cp,PRAGMA_STACKAUTO,strlen(PRAGMA_STACKAUTO)) == 0) {
530 doPragma (P_STACKAUTO,NULL);
534 if (strncmp(cp,PRAGMA_NOJTBOUND,strlen(PRAGMA_NOJTBOUND)) == 0) {
535 doPragma (P_NOJTBOUND,NULL);
539 if (strncmp(cp,PRAGMA_NOGCSE,strlen(PRAGMA_NOGCSE)) == 0) {
540 doPragma (P_NOGCSE,NULL);
544 if (strncmp(cp,PRAGMA_NOOVERLAY,strlen(PRAGMA_NOOVERLAY)) == 0) {
545 doPragma (P_NOOVERLAY,NULL);
549 if (strncmp(cp,PRAGMA_CALLEESAVES,strlen(PRAGMA_CALLEESAVES)) == 0) {
550 doPragma(P_CALLEE_SAVES,cp+strlen(PRAGMA_CALLEESAVES));
554 if (strncmp(cp,PRAGMA_EXCLUDE,strlen(PRAGMA_EXCLUDE)) == 0) {
555 doPragma(P_EXCLUDE,cp+strlen(PRAGMA_EXCLUDE));
559 if (strncmp(cp,PRAGMA_NOIV,strlen(PRAGMA_NOIV)) == 0) {
560 doPragma(P_NOIV,cp+strlen(PRAGMA_NOIV));
564 if (strncmp(cp,PRAGMA_NOLOOPREV,strlen(PRAGMA_NOLOOPREV)) == 0) {
565 doPragma(P_LOOPREV,NULL);
569 werror(W_UNKNOWN_PRAGMA,cp);
573 /* will return 1 if the string is a part
574 of a target specific keyword */
575 int isTargetKeyword(char *s)
579 if (port->keywords == NULL)
581 for ( i = 0 ; port->keywords[i] ; i++ ) {
582 if (strcmp(port->keywords[i],s) == 0)
589 extern int fatalError;
595 if (yylineno && filename) {
596 fprintf(stdout,"\n%s:%d: %s: token -> '%s' ; column %d\n",
601 // this comes from an empy file, no problem