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 asmbuffSize=asmbuffSize*3/2;
104 asmbuff = Safe_realloc (asmbuff, asmbuffSize);
110 if (asmp-asmbuff >= asmbuffSize-3) {
111 // increase the buffersize with 50%
112 asmbuffSize=asmbuffSize*3/2;
113 asmbuff = Safe_realloc (asmbuff, asmbuffSize);
118 "at" { count(); TKEYWORD(AT) ; }
119 "auto" { count(); return(AUTO); }
120 "bit" { count(); TKEYWORD(BIT) ; }
121 "break" { count(); return(BREAK); }
122 "case" { count(); return(CASE); }
123 "char" { count(); return(CHAR); }
124 "code" { count(); TKEYWORD(CODE); }
125 "const" { count(); return(CONST); }
126 "continue" { count(); return(CONTINUE); }
127 "critical" { count(); TKEYWORD(CRITICAL); }
128 "data" { count(); TKEYWORD(DATA); }
129 "default" { count(); return(DEFAULT); }
130 "do" { count(); return(DO); }
131 "double" { count(); werror(W_DOUBLE_UNSUPPORTED);return(FLOAT); }
132 "else" { count(); return(ELSE); }
133 "enum" { count(); return(ENUM); }
134 "extern" { count(); return(EXTERN); }
135 "far" { count(); TKEYWORD(XDATA); }
136 "eeprom" { count(); TKEYWORD(EEPROM); }
137 "float" { count(); return(FLOAT); }
138 "flash" { count(); TKEYWORD(CODE);}
139 "for" { count(); return(FOR); }
140 "goto" { count(); return(GOTO); }
141 "idata" { count(); TKEYWORD(IDATA);}
142 "if" { count(); return(IF); }
143 "int" { count(); return(INT); }
144 "interrupt" { count(); return(INTERRUPT);}
145 "nonbanked" { count(); TKEYWORD(NONBANKED);}
146 "banked" { count(); TKEYWORD(BANKED);}
147 "long" { count(); return(LONG); }
148 "near" { count(); TKEYWORD(DATA);}
149 "pdata" { count(); TKEYWORD(PDATA); }
150 "reentrant" { count(); TKEYWORD(REENTRANT);}
151 "register" { count(); return(REGISTER); }
152 "return" { count(); return(RETURN); }
153 "sfr" { count(); TKEYWORD(SFR) ; }
154 "sbit" { count(); TKEYWORD(SBIT) ; }
155 "short" { count(); return(SHORT); }
156 "signed" { count(); return(SIGNED); }
157 "sizeof" { count(); return(SIZEOF); }
158 "sram" { count(); TKEYWORD(XDATA);}
159 "static" { count(); return(STATIC); }
160 "struct" { count(); return(STRUCT); }
161 "switch" { count(); return(SWITCH); }
162 "typedef" { count(); return(TYPEDEF); }
163 "union" { count(); return(UNION); }
164 "unsigned" { count(); return(UNSIGNED); }
165 "void" { count(); return(VOID); }
166 "volatile" { count(); return(VOLATILE); }
167 "using" { count(); TKEYWORD(USING); }
168 "while" { count(); return(WHILE); }
169 "xdata" { count(); TKEYWORD(XDATA); }
170 "_data" { count(); TKEYWORD(_NEAR); }
171 "_code" { count(); TKEYWORD(_CODE); }
172 "_eeprom" { count(); TKEYWORD(_EEPROM); }
173 "_flash" { count(); TKEYWORD(_CODE); }
174 "_generic" { count(); TKEYWORD(_GENERIC); }
175 "_near" { count(); TKEYWORD(_NEAR); }
176 "_sram" { count(); TKEYWORD(_XDATA);}
177 "_xdata" { count(); TKEYWORD(_XDATA);}
178 "_pdata" { count(); TKEYWORD(_PDATA); }
179 "_idata" { count(); TKEYWORD(_IDATA); }
180 "..." { count(); return(VAR_ARGS);}
181 {L}({L}|{D})* { count(); return(check_type()); }
182 0[xX]{H}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
183 0{D}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
184 {D}+{IS}? { count(); yylval.val = constVal(yytext); return(CONSTANT); }
185 '(\\.|[^\\'])+' { count();yylval.val = charVal (yytext); return(CONSTANT); }
186 {D}+{E}{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
187 {D}*"."{D}+({E})?{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
188 {D}+"."{D}*({E})?{FS}? { count(); yylval.val = constFloatVal(yytext);return(CONSTANT); }
189 \" { count(); yylval.val=strVal(stringLiteral()); return(STRING_LITERAL);}
190 ">>=" { count(); yylval.yyint = RIGHT_ASSIGN ; return(RIGHT_ASSIGN); }
191 "<<=" { count(); yylval.yyint = LEFT_ASSIGN ; return(LEFT_ASSIGN) ; }
192 "+=" { count(); yylval.yyint = ADD_ASSIGN ; return(ADD_ASSIGN) ; }
193 "-=" { count(); yylval.yyint = SUB_ASSIGN ; return(SUB_ASSIGN) ; }
194 "*=" { count(); yylval.yyint = MUL_ASSIGN ; return(MUL_ASSIGN) ; }
195 "/=" { count(); yylval.yyint = DIV_ASSIGN ; return(DIV_ASSIGN) ; }
196 "%=" { count(); yylval.yyint = MOD_ASSIGN ; return(MOD_ASSIGN) ; }
197 "&=" { count(); yylval.yyint = AND_ASSIGN ; return(AND_ASSIGN) ; }
198 "^=" { count(); yylval.yyint = XOR_ASSIGN ; return(XOR_ASSIGN) ; }
199 "|=" { count(); yylval.yyint = OR_ASSIGN ; return(OR_ASSIGN) ; }
200 ">>" { count(); return(RIGHT_OP); }
201 "<<" { count(); return(LEFT_OP); }
202 "++" { count(); return(INC_OP); }
203 "--" { count(); return(DEC_OP); }
204 "->" { count(); return(PTR_OP); }
205 "&&" { count(); return(AND_OP); }
206 "||" { count(); return(OR_OP); }
207 "<=" { count(); return(LE_OP); }
208 ">=" { count(); return(GE_OP); }
209 "==" { count(); return(EQ_OP); }
210 "!=" { count(); return(NE_OP); }
211 ";" { count(); return(';'); }
212 "{" { count(); NestLevel++ ; return('{'); }
213 "}" { count(); NestLevel--; 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 "|" { count(); return('|'); }
234 "?" { count(); return('?'); }
235 ^#line.*"\n" { count(); checkCurrFile(yytext); }
236 ^#pragma.*"\n" { count(); process_pragma(yytext); }
238 ^[^(]+"("[0-9]+") : error"[^\n]+ { werror(E_PRE_PROC_FAILED,yytext);count(); }
239 ^[^(]+"("[0-9]+") : warning"[^\n]+ { werror(W_PRE_PROC_WARNING,yytext);count(); }
242 [ \t\v\f] { count(); }
246 int checkCurrFile ( char *s)
252 /* first check if this is a #line */
253 if ( strncmp(s,"#line",5) )
256 /* get to the line number */
263 sscanf(lineNum,"%d",&lNum);
265 /* now see if we have a file name */
266 while (*s != '\"' && *s)
269 /* if we don't have a filename then */
270 /* set the current line number to */
271 /* line number if printFlag is on */
277 /* if we have a filename then check */
278 /* if it is "standard in" if yes then */
279 /* get the currentfile name info */
282 if ( strncmp(s,fullSrcFileName,strlen(fullSrcFileName)) == 0) {
284 currFname = fullSrcFileName ;
287 /* mark the end of the filename */
288 while (*s != '"') s++;
290 currFname = Safe_calloc(1,strlen(sb)+1);
291 strcpy(currFname,sb);
294 filename = currFname ;
303 while ((c = input()) != '*' && c != 0)
307 if ((c1 = input()) != '/' && c != 0) {
325 for (i = 0; yytext[i] != '\0'; i++) {
326 if (yytext[i] == '\n') {
328 lineno = ++yylineno ;
331 if (yytext[i] == '\t')
332 column += 8 - (column % 8);
342 /* check if it is in the typedef table */
343 if (findSym(TypedefTab,NULL,yytext)) {
344 strcpy(yylval.yychar,yytext);
348 strcpy (yylval.yychar,yytext);
353 char strLitBuff[2048] ;
356 * Change by JTV 2001-05-19 to not concantenate strings
357 * to support ANSI hex and octal escape sequences in string liteals
360 char *stringLiteral ()
364 char *str = strLitBuff ;
367 /* put into the buffer till we hit the */
375 break ; /* end of input */
377 /* if it is a \ then everything allowed */
381 *str++ = ch ; /* backslash in place */
382 *str++ = input() ; /* following char in place */
383 continue ; /* carry on */
386 /* if new line we have a new line break */
390 /* if this is a quote then we have work to do */
391 /* find the next non whitespace character */
392 /* if that is a double quote then carry on */
396 *str++ = ch ; /* Pass end of this string or substring to evaluator */
398 while ((ch = input()) && isspace(ch)) ;
410 *str++ = ch; /* Put next substring introducer into output string */
418 void doPragma (int op, char *cp)
422 memcpy(&save_options,&options,sizeof(options));
423 memcpy(&save_optimize,&optimize,sizeof(optimize));
426 memcpy(&options,&save_options,sizeof(options));
427 memcpy(&optimize,&save_optimize,sizeof(optimize));
430 optimize.loopInduction = 0 ;
433 optimize.loopInvariant = 0 ;
436 optimize.loopInduction = 1 ;
439 options.stackAuto = 1;
442 optimize.noJTabBoundary = 1;
445 optimize.global_cse = 0;
448 options.noOverlay = 1;
453 /* append to the functions already listed
455 for (; options.calleeSaves[i] ;i++);
456 parseWithComma(&options.calleeSaves[i],strdup(cp));
460 parseWithComma(options.excludeRegs,strdup(cp));
463 optimize.noLoopReverse = 1;
468 int process_pragma(char *s)
471 /* find the pragma */
472 while (strncmp(s,"#pragma",7))
476 /* look for the directive */
477 while(isspace(*s)) s++;
480 /* look for the end of the directive */
481 while ((! isspace(*s)) &&
485 /* First give the port a chance */
486 if (port->process_pragma && !port->process_pragma(cp))
489 /* now compare and do what needs to be done */
490 if (strncmp(cp,PRAGMA_SAVE,strlen(PRAGMA_SAVE)) == 0) {
491 doPragma(P_SAVE,cp+strlen(PRAGMA_SAVE));
495 if (strncmp(cp,PRAGMA_RESTORE,strlen(PRAGMA_RESTORE)) == 0) {
496 doPragma (P_RESTORE,cp+strlen(PRAGMA_RESTORE));
500 if (strncmp(cp,PRAGMA_NOINDUCTION,strlen(PRAGMA_NOINDUCTION)) == 0) {
501 doPragma (P_NOINDUCTION,cp+strlen(PRAGMA_NOINDUCTION)) ;
505 if (strncmp(cp,PRAGMA_NOINVARIANT,strlen(PRAGMA_NOINVARIANT)) == 0) {
506 doPragma (P_NOINVARIANT,NULL) ;
510 if (strncmp(cp,PRAGMA_INDUCTION,strlen(PRAGMA_INDUCTION)) == 0) {
511 doPragma (P_INDUCTION,NULL) ;
515 if (strncmp(cp,PRAGMA_STACKAUTO,strlen(PRAGMA_STACKAUTO)) == 0) {
516 doPragma (P_STACKAUTO,NULL);
520 if (strncmp(cp,PRAGMA_NOJTBOUND,strlen(PRAGMA_NOJTBOUND)) == 0) {
521 doPragma (P_NOJTBOUND,NULL);
525 if (strncmp(cp,PRAGMA_NOGCSE,strlen(PRAGMA_NOGCSE)) == 0) {
526 doPragma (P_NOGCSE,NULL);
530 if (strncmp(cp,PRAGMA_NOOVERLAY,strlen(PRAGMA_NOOVERLAY)) == 0) {
531 doPragma (P_NOOVERLAY,NULL);
535 if (strncmp(cp,PRAGMA_CALLEESAVES,strlen(PRAGMA_CALLEESAVES)) == 0) {
536 doPragma(P_CALLEE_SAVES,cp+strlen(PRAGMA_CALLEESAVES));
540 if (strncmp(cp,PRAGMA_EXCLUDE,strlen(PRAGMA_EXCLUDE)) == 0) {
541 doPragma(P_EXCLUDE,cp+strlen(PRAGMA_EXCLUDE));
545 if (strncmp(cp,PRAGMA_NOLOOPREV,strlen(PRAGMA_NOLOOPREV)) == 0) {
546 doPragma(P_EXCLUDE,NULL);
550 werror(W_UNKNOWN_PRAGMA,cp);
554 /* will return 1 if the string is a part
555 of a target specific keyword */
556 int isTargetKeyword(char *s)
560 if (port->keywords == NULL)
562 for ( i = 0 ; port->keywords[i] ; i++ ) {
563 if (strcmp(port->keywords[i],s) == 0)
570 extern int fatalError;
576 if (yylineno && filename)
577 fprintf(stdout,"\n%s(%d) %s: token -> '%s' ; column %d\n",