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 -------------------------------------------------------------------------*/
39 char *stringLiteral();
43 extern char *filename ;
44 extern char *fullSrcFileName ;
48 int process_pragma(char *);
51 int yywrap YY_PROTO((void))
55 #define TKEYWORD(token) return (isTargetKeyword(yytext) ? token :\
60 extern int check_type ();
61 extern int isTargetKeyword ();
62 extern int checkCurrFile (char *);
63 extern int processPragma (char *);
64 extern int printListing (int );
65 struct optimize save_optimize ;
66 struct options save_options ;
88 asmp = asmbuff = Safe_realloc (asmbuff, INITIAL_INLINEASM);
89 asmbuffSize=INITIAL_INLINEASM;
95 yylval.yyinline = Safe_calloc (1, strlen(asmbuff)+1);
96 strcpy(yylval.yyinline,asmbuff);
101 if (asmp-asmbuff >= asmbuffSize-2) {
102 // increase the buffersize with 50%
103 int size=asmp-asmbuff;
104 asmbuffSize=asmbuffSize*3/2;
105 asmbuff = Safe_realloc (asmbuff, asmbuffSize);
112 if (asmp-asmbuff >= asmbuffSize-3) {
113 // increase the buffersize with 50%
114 int size=asmp-asmbuff;
115 asmbuffSize=asmbuffSize*3/2;
116 asmbuff = Safe_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 "_data" { count(); TKEYWORD(_NEAR); }
176 "_code" { count(); TKEYWORD(_CODE); }
177 "_eeprom" { count(); TKEYWORD(_EEPROM); }
178 "_flash" { count(); TKEYWORD(_CODE); }
179 "_generic" { count(); TKEYWORD(_GENERIC); }
180 "_near" { count(); TKEYWORD(_NEAR); }
181 "_sram" { count(); TKEYWORD(_XDATA);}
182 "_xdata" { count(); TKEYWORD(_XDATA);}
183 "_pdata" { count(); TKEYWORD(_PDATA); }
184 "_idata" { count(); TKEYWORD(_IDATA); }
185 "..." { count(); return(VAR_ARGS);}
186 {L}({L}|{D})* { count(); return(check_type()); }
187 0[xX]{H}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
188 0{D}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
189 {D}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
190 '(\\.|[^\\'])+' { count();yylval.val = charVal (yytext); return(CONSTANT); }
191 {D}+{E}{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
192 {D}*"."{D}+({E})?{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
193 {D}+"."{D}*({E})?{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
194 \" { count(); yylval.val=strVal(stringLiteral()); return(STRING_LITERAL);}
195 ">>=" { count(); yylval.yyint = RIGHT_ASSIGN ; return(RIGHT_ASSIGN); }
196 "<<=" { count(); yylval.yyint = LEFT_ASSIGN ; return(LEFT_ASSIGN) ; }
197 "+=" { count(); yylval.yyint = ADD_ASSIGN ; return(ADD_ASSIGN) ; }
198 "-=" { count(); yylval.yyint = SUB_ASSIGN ; return(SUB_ASSIGN) ; }
199 "*=" { count(); yylval.yyint = MUL_ASSIGN ; return(MUL_ASSIGN) ; }
200 "/=" { count(); yylval.yyint = DIV_ASSIGN ; return(DIV_ASSIGN) ; }
201 "%=" { count(); yylval.yyint = MOD_ASSIGN ; return(MOD_ASSIGN) ; }
202 "&=" { count(); yylval.yyint = AND_ASSIGN ; return(AND_ASSIGN) ; }
203 "^=" { count(); yylval.yyint = XOR_ASSIGN ; return(XOR_ASSIGN) ; }
204 "|=" { count(); yylval.yyint = OR_ASSIGN ; return(OR_ASSIGN) ; }
205 ">>" { count(); return(RIGHT_OP); }
206 "<<" { count(); return(LEFT_OP); }
207 "++" { count(); return(INC_OP); }
208 "--" { count(); return(DEC_OP); }
209 "->" { count(); return(PTR_OP); }
210 "&&" { count(); return(AND_OP); }
211 "||" { count(); return(OR_OP); }
212 "<=" { count(); return(LE_OP); }
213 ">=" { count(); return(GE_OP); }
214 "==" { count(); return(EQ_OP); }
215 "!=" { count(); return(NE_OP); }
216 ";" { count(); return(';'); }
217 "{" { count(); NestLevel++ ; return('{'); }
218 "}" { count(); NestLevel--; 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 "/" { count(); return('/'); }
234 "%" { count(); return('%'); }
235 "<" { count(); return('<'); }
236 ">" { count(); return('>'); }
237 "^" { count(); return('^'); }
238 "|" { count(); return('|'); }
239 "?" { count(); return('?'); }
240 ^#line.*"\n" { count(); checkCurrFile(yytext); }
241 ^#pragma.*"\n" { count(); process_pragma(yytext); }
243 ^[^(]+"("[0-9]+") : error"[^\n]+ { werror(E_PRE_PROC_FAILED,yytext);count(); }
244 ^[^(]+"("[0-9]+") : warning"[^\n]+ { werror(W_PRE_PROC_WARNING,yytext);count(); }
247 [ \t\v\f] { count(); }
251 int checkCurrFile ( char *s)
257 /* first check if this is a #line */
258 if ( strncmp(s,"#line",5) )
261 /* get to the line number */
268 sscanf(lineNum,"%d",&lNum);
270 /* now see if we have a file name */
271 while (*s != '\"' && *s)
274 /* if we don't have a filename then */
275 /* set the current line number to */
276 /* line number if printFlag is on */
282 /* if we have a filename then check */
283 /* if it is "standard in" if yes then */
284 /* get the currentfile name info */
287 if ( strncmp(s,fullSrcFileName,strlen(fullSrcFileName)) == 0) {
289 currFname = fullSrcFileName ;
292 /* mark the end of the filename */
293 while (*s != '"') s++;
295 currFname = Safe_calloc(1,strlen(sb)+1);
296 strcpy(currFname,sb);
299 filename = currFname ;
308 while ((c = input()) != '*' && c)
312 if (c && (c1 = input()) != '/') {
326 for (i = 0; yytext[i] != '\0'; i++) {
327 if (yytext[i] == '\n') {
329 lineno = ++yylineno ;
332 if (yytext[i] == '\t')
333 column += 8 - (column % 8);
343 /* check if it is in the typedef table */
344 if (findSym(TypedefTab,NULL,yytext)) {
345 strcpy(yylval.yychar,yytext);
349 strcpy (yylval.yychar,yytext);
354 char strLitBuff[2048] ;
357 * Change by JTV 2001-05-19 to not concantenate strings
358 * to support ANSI hex and octal escape sequences in string liteals
361 char *stringLiteral () {
363 char *str = strLitBuff;
366 /* put into the buffer till we hit the first \" */
372 break; /* end of input */
374 /* if it is a \ then escape char's are allowed */
376 *str++ = ch; /* backslash in place */
377 *str++=input(); /* get the escape char, no check */
378 continue; /* carry on */
381 /* if new line we have a new line break */
387 /* if this is a quote then we have work to do */
388 /* find the next non whitespace character */
389 /* if that is a double quote then carry on */
391 *str++ = ch ; /* Pass end of this string or substring to evaluator */
393 while ((ch = input()) && (isspace(ch) || ch=='\\')) {
396 werror (W_STRAY_BACKSLASH, filename, yylineno);
412 *str++ = ch; /* Put next substring introducer into output string */
419 void doPragma (int op, char *cp)
423 memcpy(&save_options,&options,sizeof(options));
424 memcpy(&save_optimize,&optimize,sizeof(optimize));
427 memcpy(&options,&save_options,sizeof(options));
428 memcpy(&optimize,&save_optimize,sizeof(optimize));
431 optimize.loopInduction = 0 ;
434 optimize.loopInvariant = 0 ;
437 optimize.loopInduction = 1 ;
440 options.stackAuto = 1;
443 optimize.noJTabBoundary = 1;
446 optimize.global_cse = 0;
449 options.noOverlay = 1;
454 /* append to the functions already listed
456 for (; options.calleeSaves[i] ;i++);
457 parseWithComma(&options.calleeSaves[i],strdup(cp));
461 parseWithComma(options.excludeRegs,strdup(cp));
464 optimize.noLoopReverse = 1;
469 int process_pragma(char *s)
472 /* find the pragma */
473 while (strncmp(s,"#pragma",7))
477 /* look for the directive */
478 while(isspace(*s)) s++;
481 /* look for the end of the directive */
482 while ((! isspace(*s)) &&
486 /* First give the port a chance */
487 if (port->process_pragma && !port->process_pragma(cp))
490 /* now compare and do what needs to be done */
491 if (strncmp(cp,PRAGMA_SAVE,strlen(PRAGMA_SAVE)) == 0) {
492 doPragma(P_SAVE,cp+strlen(PRAGMA_SAVE));
496 if (strncmp(cp,PRAGMA_RESTORE,strlen(PRAGMA_RESTORE)) == 0) {
497 doPragma (P_RESTORE,cp+strlen(PRAGMA_RESTORE));
501 if (strncmp(cp,PRAGMA_NOINDUCTION,strlen(PRAGMA_NOINDUCTION)) == 0) {
502 doPragma (P_NOINDUCTION,cp+strlen(PRAGMA_NOINDUCTION)) ;
506 if (strncmp(cp,PRAGMA_NOINVARIANT,strlen(PRAGMA_NOINVARIANT)) == 0) {
507 doPragma (P_NOINVARIANT,NULL) ;
511 if (strncmp(cp,PRAGMA_INDUCTION,strlen(PRAGMA_INDUCTION)) == 0) {
512 doPragma (P_INDUCTION,NULL) ;
516 if (strncmp(cp,PRAGMA_STACKAUTO,strlen(PRAGMA_STACKAUTO)) == 0) {
517 doPragma (P_STACKAUTO,NULL);
521 if (strncmp(cp,PRAGMA_NOJTBOUND,strlen(PRAGMA_NOJTBOUND)) == 0) {
522 doPragma (P_NOJTBOUND,NULL);
526 if (strncmp(cp,PRAGMA_NOGCSE,strlen(PRAGMA_NOGCSE)) == 0) {
527 doPragma (P_NOGCSE,NULL);
531 if (strncmp(cp,PRAGMA_NOOVERLAY,strlen(PRAGMA_NOOVERLAY)) == 0) {
532 doPragma (P_NOOVERLAY,NULL);
536 if (strncmp(cp,PRAGMA_CALLEESAVES,strlen(PRAGMA_CALLEESAVES)) == 0) {
537 doPragma(P_CALLEE_SAVES,cp+strlen(PRAGMA_CALLEESAVES));
541 if (strncmp(cp,PRAGMA_EXCLUDE,strlen(PRAGMA_EXCLUDE)) == 0) {
542 doPragma(P_EXCLUDE,cp+strlen(PRAGMA_EXCLUDE));
546 if (strncmp(cp,PRAGMA_NOLOOPREV,strlen(PRAGMA_NOLOOPREV)) == 0) {
547 doPragma(P_EXCLUDE,NULL);
551 werror(W_UNKNOWN_PRAGMA,cp);
555 /* will return 1 if the string is a part
556 of a target specific keyword */
557 int isTargetKeyword(char *s)
561 if (port->keywords == NULL)
563 for ( i = 0 ; port->keywords[i] ; i++ ) {
564 if (strcmp(port->keywords[i],s) == 0)
571 extern int fatalError;
577 if (yylineno && filename)
578 fprintf(stdout,"\n%s(%d) %s: token -> '%s' ; column %d\n",