| 1 | %{ |
| 2 | |
| 3 | /* Copyright (C) 1991, 92, 93, 94, 95, 1996 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GLD, the Gnu Linker. |
| 6 | |
| 7 | GLD is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GLD is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GLD; see the file COPYING. If not, write to |
| 19 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | /* |
| 22 | This was written by steve chamberlain |
| 23 | sac@cygnus.com |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | #include <ansidecl.h> |
| 28 | #include <stdio.h> |
| 29 | #include <ctype.h> |
| 30 | |
| 31 | #ifdef MPW |
| 32 | /* Prevent enum redefinition problems. */ |
| 33 | #define TRUE_FALSE_ALREADY_DEFINED |
| 34 | #endif /* MPW */ |
| 35 | |
| 36 | #include "bfd.h" |
| 37 | #include "sysdep.h" |
| 38 | #include "ld.h" |
| 39 | #include "ldgram.h" |
| 40 | #include "ldmisc.h" |
| 41 | #include "ldexp.h" |
| 42 | #include "ldlang.h" |
| 43 | #include "ldfile.h" |
| 44 | #include "ldlex.h" |
| 45 | #include "ldmain.h" |
| 46 | |
| 47 | /* The type of top-level parser input. |
| 48 | yylex and yyparse (indirectly) both check this. */ |
| 49 | input_type parser_input; |
| 50 | |
| 51 | /* Radix to use for bfd_scan_vma -- 0 (default to base 10) or 16. */ |
| 52 | int hex_mode; |
| 53 | |
| 54 | /* Line number in the current input file. |
| 55 | (FIXME Actually, it doesn't appear to get reset for each file?) */ |
| 56 | unsigned int lineno = 1; |
| 57 | |
| 58 | /* The string we are currently lexing, or NULL if we are reading a |
| 59 | file. */ |
| 60 | const char *lex_string = NULL; |
| 61 | |
| 62 | /* Support for flex reading from more than one input file (stream). |
| 63 | `include_stack' is flex's input state for each open file; |
| 64 | `file_name_stack' is the file names. `lineno_stack' is the current |
| 65 | line numbers. |
| 66 | |
| 67 | If `include_stack_ptr' is 0, we haven't started reading anything yet. |
| 68 | Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid. */ |
| 69 | |
| 70 | #undef YY_INPUT |
| 71 | #define YY_INPUT(buf,result,max_size) yy_input(buf, &result, max_size) |
| 72 | |
| 73 | #define MAX_INCLUDE_DEPTH 10 |
| 74 | static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH]; |
| 75 | static const char *file_name_stack[MAX_INCLUDE_DEPTH]; |
| 76 | static unsigned int lineno_stack[MAX_INCLUDE_DEPTH]; |
| 77 | static unsigned int include_stack_ptr = 0; |
| 78 | |
| 79 | static YY_BUFFER_STATE yy_create_string_buffer PARAMS ((const char *string, |
| 80 | size_t size)); |
| 81 | static void yy_input PARAMS ((char *, int *result, int max_size)); |
| 82 | |
| 83 | static void comment PARAMS ((void)); |
| 84 | static void lex_warn_invalid PARAMS ((char *where, char *what)); |
| 85 | |
| 86 | /* STATES |
| 87 | EXPRESSION definitely in an expression |
| 88 | SCRIPT definitely in a script |
| 89 | BOTH either EXPRESSION or SCRIPT |
| 90 | DEFSYMEXP in an argument to -defsym |
| 91 | MRI in an MRI script |
| 92 | */ |
| 93 | #define RTOKEN(x) { yylval.token = x; return x; } |
| 94 | |
| 95 | /* Some versions of flex want this. */ |
| 96 | #ifndef yywrap |
| 97 | int yywrap () { return 1; } |
| 98 | #endif |
| 99 | %} |
| 100 | |
| 101 | %a 4000 |
| 102 | %o 5000 |
| 103 | |
| 104 | CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~] |
| 105 | CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~] |
| 106 | FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~] |
| 107 | SYMBOLCHARN [_a-zA-Z\/\.\\0-9] |
| 108 | FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~] |
| 109 | WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*] |
| 110 | WHITE [ \t\n\r]+ |
| 111 | |
| 112 | NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~] |
| 113 | |
| 114 | |
| 115 | %s SCRIPT |
| 116 | %s EXPRESSION |
| 117 | %s BOTH |
| 118 | %s DEFSYMEXP |
| 119 | %s MRI |
| 120 | %% |
| 121 | |
| 122 | if (parser_input != input_selected) |
| 123 | { |
| 124 | /* The first token of the input determines the initial parser state. */ |
| 125 | input_type t = parser_input; |
| 126 | parser_input = input_selected; |
| 127 | switch (t) |
| 128 | { |
| 129 | case input_script: return INPUT_SCRIPT; break; |
| 130 | case input_mri_script: return INPUT_MRI_SCRIPT; break; |
| 131 | case input_defsym: return INPUT_DEFSYM; break; |
| 132 | default: abort (); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | <BOTH,SCRIPT,EXPRESSION>"/*" { comment(); } |
| 137 | |
| 138 | |
| 139 | <DEFSYMEXP>"-" { RTOKEN('-');} |
| 140 | <DEFSYMEXP>"+" { RTOKEN('+');} |
| 141 | <DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}* { yylval.name = buystring(yytext); return NAME; } |
| 142 | <DEFSYMEXP>"=" { RTOKEN('='); } |
| 143 | |
| 144 | <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ { |
| 145 | yylval.integer = bfd_scan_vma (yytext+1, 0,16); |
| 146 | return INT; |
| 147 | } |
| 148 | |
| 149 | <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) { |
| 150 | int ibase ; |
| 151 | switch (yytext[yyleng-1]) { |
| 152 | case 'X': |
| 153 | case 'x': |
| 154 | case 'H': |
| 155 | case 'h': |
| 156 | ibase = 16; |
| 157 | break; |
| 158 | case 'O': |
| 159 | case 'o': |
| 160 | ibase = 8; |
| 161 | break; |
| 162 | case 'B': |
| 163 | case 'b': |
| 164 | ibase = 2; |
| 165 | break; |
| 166 | default: |
| 167 | ibase = 10; |
| 168 | } |
| 169 | yylval.integer = bfd_scan_vma (yytext, 0, |
| 170 | ibase); |
| 171 | return INT; |
| 172 | } |
| 173 | <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>"$"?"0x"?([0-9A-Fa-f])+(M|K|m|k)? { |
| 174 | yylval.integer = bfd_scan_vma (yytext, 0, |
| 175 | hex_mode); |
| 176 | if (yytext[yyleng-1]=='M' |
| 177 | || yytext[yyleng-1] == 'm') { |
| 178 | yylval.integer *= 1024*1024; |
| 179 | } |
| 180 | if (yytext[yyleng-1]=='K' |
| 181 | || yytext[yyleng-1]=='k') { |
| 182 | yylval.integer *= 1024; |
| 183 | } |
| 184 | return INT; |
| 185 | } |
| 186 | <BOTH,SCRIPT,EXPRESSION,MRI>"]" { RTOKEN(']');} |
| 187 | <BOTH,SCRIPT,EXPRESSION,MRI>"[" { RTOKEN('[');} |
| 188 | <BOTH,SCRIPT,EXPRESSION,MRI>"<<=" { RTOKEN(LSHIFTEQ);} |
| 189 | <BOTH,SCRIPT,EXPRESSION,MRI>">>=" { RTOKEN(RSHIFTEQ);} |
| 190 | <BOTH,SCRIPT,EXPRESSION,MRI>"||" { RTOKEN(OROR);} |
| 191 | <BOTH,SCRIPT,EXPRESSION,MRI>"==" { RTOKEN(EQ);} |
| 192 | <BOTH,SCRIPT,EXPRESSION,MRI>"!=" { RTOKEN(NE);} |
| 193 | <BOTH,SCRIPT,EXPRESSION,MRI>">=" { RTOKEN(GE);} |
| 194 | <BOTH,SCRIPT,EXPRESSION,MRI>"<=" { RTOKEN(LE);} |
| 195 | <BOTH,SCRIPT,EXPRESSION,MRI>"<<" { RTOKEN(LSHIFT);} |
| 196 | <BOTH,SCRIPT,EXPRESSION,MRI>">>" { RTOKEN(RSHIFT);} |
| 197 | <BOTH,SCRIPT,EXPRESSION,MRI>"+=" { RTOKEN(PLUSEQ);} |
| 198 | <BOTH,SCRIPT,EXPRESSION,MRI>"-=" { RTOKEN(MINUSEQ);} |
| 199 | <BOTH,SCRIPT,EXPRESSION,MRI>"*=" { RTOKEN(MULTEQ);} |
| 200 | <BOTH,SCRIPT,EXPRESSION,MRI>"/=" { RTOKEN(DIVEQ);} |
| 201 | <BOTH,SCRIPT,EXPRESSION,MRI>"&=" { RTOKEN(ANDEQ);} |
| 202 | <BOTH,SCRIPT,EXPRESSION,MRI>"|=" { RTOKEN(OREQ);} |
| 203 | <BOTH,SCRIPT,EXPRESSION,MRI>"&&" { RTOKEN(ANDAND);} |
| 204 | <BOTH,SCRIPT,EXPRESSION,MRI>">" { RTOKEN('>');} |
| 205 | <BOTH,SCRIPT,EXPRESSION,MRI>"," { RTOKEN(',');} |
| 206 | <BOTH,SCRIPT,EXPRESSION,MRI>"&" { RTOKEN('&');} |
| 207 | <BOTH,SCRIPT,EXPRESSION,MRI>"|" { RTOKEN('|');} |
| 208 | <BOTH,SCRIPT,EXPRESSION,MRI>"~" { RTOKEN('~');} |
| 209 | <BOTH,SCRIPT,EXPRESSION,MRI>"!" { RTOKEN('!');} |
| 210 | <BOTH,SCRIPT,EXPRESSION,MRI>"?" { RTOKEN('?');} |
| 211 | <BOTH,SCRIPT,EXPRESSION,MRI>"*" { RTOKEN('*');} |
| 212 | <BOTH,SCRIPT,EXPRESSION,MRI>"+" { RTOKEN('+');} |
| 213 | <BOTH,SCRIPT,EXPRESSION,MRI>"-" { RTOKEN('-');} |
| 214 | <BOTH,SCRIPT,EXPRESSION,MRI>"/" { RTOKEN('/');} |
| 215 | <BOTH,SCRIPT,EXPRESSION,MRI>"%" { RTOKEN('%');} |
| 216 | <BOTH,SCRIPT,EXPRESSION,MRI>"<" { RTOKEN('<');} |
| 217 | <BOTH,SCRIPT,EXPRESSION,MRI>"=" { RTOKEN('=');} |
| 218 | <BOTH,SCRIPT,EXPRESSION,MRI>"}" { RTOKEN('}') ; } |
| 219 | <BOTH,SCRIPT,EXPRESSION,MRI>"{" { RTOKEN('{'); } |
| 220 | <BOTH,SCRIPT,EXPRESSION,MRI>")" { RTOKEN(')');} |
| 221 | <BOTH,SCRIPT,EXPRESSION,MRI>"(" { RTOKEN('(');} |
| 222 | <BOTH,SCRIPT,EXPRESSION,MRI>":" { RTOKEN(':'); } |
| 223 | <BOTH,SCRIPT,EXPRESSION,MRI>";" { RTOKEN(';');} |
| 224 | <BOTH,SCRIPT>"MEMORY" { RTOKEN(MEMORY);} |
| 225 | <BOTH,SCRIPT>"ORIGIN" { RTOKEN(ORIGIN);} |
| 226 | <EXPRESSION,BOTH,SCRIPT>"BLOCK" { RTOKEN(BLOCK);} |
| 227 | <EXPRESSION,BOTH,SCRIPT>"BIND" { RTOKEN(BIND);} |
| 228 | <BOTH,SCRIPT>"LENGTH" { RTOKEN(LENGTH);} |
| 229 | <EXPRESSION,BOTH,SCRIPT>"ALIGN" { RTOKEN(ALIGN_K);} |
| 230 | <EXPRESSION,BOTH,SCRIPT>"ADDR" { RTOKEN(ADDR);} |
| 231 | <EXPRESSION,BOTH,SCRIPT>"LOADADDR" { RTOKEN(LOADADDR);} |
| 232 | <BOTH,SCRIPT>"ENTRY" { RTOKEN(ENTRY);} |
| 233 | <EXPRESSION,BOTH,SCRIPT>"NEXT" { RTOKEN(NEXT);} |
| 234 | <EXPRESSION,BOTH,SCRIPT>"sizeof_headers" { RTOKEN(SIZEOF_HEADERS);} |
| 235 | <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS" { RTOKEN(SIZEOF_HEADERS);} |
| 236 | <BOTH,SCRIPT>"MAP" { RTOKEN(MAP);} |
| 237 | <EXPRESSION,BOTH,SCRIPT>"SIZEOF" { RTOKEN(SIZEOF);} |
| 238 | <BOTH,SCRIPT>"TARGET" { RTOKEN(TARGET_K);} |
| 239 | <BOTH,SCRIPT>"SEARCH_DIR" { RTOKEN(SEARCH_DIR);} |
| 240 | <BOTH,SCRIPT>"OUTPUT" { RTOKEN(OUTPUT);} |
| 241 | <BOTH,SCRIPT>"INPUT" { RTOKEN(INPUT);} |
| 242 | <EXPRESSION,BOTH,SCRIPT>"GROUP" { RTOKEN(GROUP);} |
| 243 | <EXPRESSION,BOTH,SCRIPT>"DEFINED" { RTOKEN(DEFINED);} |
| 244 | <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS" { RTOKEN(CREATE_OBJECT_SYMBOLS);} |
| 245 | <BOTH,SCRIPT>"CONSTRUCTORS" { RTOKEN( CONSTRUCTORS);} |
| 246 | <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);} |
| 247 | <BOTH,SCRIPT>"SECTIONS" { RTOKEN(SECTIONS);} |
| 248 | <BOTH,SCRIPT>"FILL" { RTOKEN(FILL);} |
| 249 | <BOTH,SCRIPT>"STARTUP" { RTOKEN(STARTUP);} |
| 250 | <BOTH,SCRIPT>"OUTPUT_FORMAT" { RTOKEN(OUTPUT_FORMAT);} |
| 251 | <BOTH,SCRIPT>"OUTPUT_ARCH" { RTOKEN( OUTPUT_ARCH);} |
| 252 | <BOTH,SCRIPT>"HLL" { RTOKEN(HLL);} |
| 253 | <BOTH,SCRIPT>"SYSLIB" { RTOKEN(SYSLIB);} |
| 254 | <BOTH,SCRIPT>"FLOAT" { RTOKEN(FLOAT);} |
| 255 | <BOTH,SCRIPT>"QUAD" { RTOKEN( QUAD);} |
| 256 | <BOTH,SCRIPT>"LONG" { RTOKEN( LONG);} |
| 257 | <BOTH,SCRIPT>"SHORT" { RTOKEN( SHORT);} |
| 258 | <BOTH,SCRIPT>"BYTE" { RTOKEN( BYTE);} |
| 259 | <BOTH,SCRIPT>"NOFLOAT" { RTOKEN(NOFLOAT);} |
| 260 | <BOTH,SCRIPT>"NOCROSSREFS" { RTOKEN(NOCROSSREFS);} |
| 261 | <EXPRESSION,BOTH,SCRIPT>"NOLOAD" { RTOKEN(NOLOAD);} |
| 262 | <EXPRESSION,BOTH,SCRIPT>"DSECT" { RTOKEN(DSECT);} |
| 263 | <EXPRESSION,BOTH,SCRIPT>"COPY" { RTOKEN(COPY);} |
| 264 | <EXPRESSION,BOTH,SCRIPT>"INFO" { RTOKEN(INFO);} |
| 265 | <EXPRESSION,BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY);} |
| 266 | <BOTH,SCRIPT>"o" { RTOKEN(ORIGIN);} |
| 267 | <BOTH,SCRIPT>"org" { RTOKEN(ORIGIN);} |
| 268 | <BOTH,SCRIPT>"l" { RTOKEN( LENGTH);} |
| 269 | <BOTH,SCRIPT>"len" { RTOKEN( LENGTH);} |
| 270 | <BOTH,SCRIPT>"INCLUDE" { RTOKEN(INCLUDE);} |
| 271 | <BOTH,SCRIPT>"PHDRS" { RTOKEN (PHDRS); } |
| 272 | <EXPRESSION,BOTH,SCRIPT>"AT" { RTOKEN(AT);} |
| 273 | <EXPRESSION,BOTH,SCRIPT>"PROVIDE" { RTOKEN(PROVIDE); } |
| 274 | <MRI>"#".*\n?\r? { ++ lineno; } |
| 275 | <MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); } |
| 276 | <MRI>"\r" { ++ lineno; RTOKEN(NEWLINE); } |
| 277 | <MRI>"*".* { /* Mri comment line */ } |
| 278 | <MRI>";".* { /* Mri comment line */ } |
| 279 | <MRI>"END" { RTOKEN(ENDWORD); } |
| 280 | <MRI>"ALIGNMOD" { RTOKEN(ALIGNMOD);} |
| 281 | <MRI>"ALIGN" { RTOKEN(ALIGN_K);} |
| 282 | <MRI>"CHIP" { RTOKEN(CHIP); } |
| 283 | <MRI>"BASE" { RTOKEN(BASE); } |
| 284 | <MRI>"ALIAS" { RTOKEN(ALIAS); } |
| 285 | <MRI>"TRUNCATE" { RTOKEN(TRUNCATE); } |
| 286 | <MRI>"LOAD" { RTOKEN(LOAD); } |
| 287 | <MRI>"PUBLIC" { RTOKEN(PUBLIC); } |
| 288 | <MRI>"ORDER" { RTOKEN(ORDER); } |
| 289 | <MRI>"NAME" { RTOKEN(NAMEWORD); } |
| 290 | <MRI>"FORMAT" { RTOKEN(FORMAT); } |
| 291 | <MRI>"CASE" { RTOKEN(CASE); } |
| 292 | <MRI>"EXTERN" { RTOKEN(EXTERN); } |
| 293 | <MRI>"START" { RTOKEN(START); } |
| 294 | <MRI>"LIST".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } |
| 295 | <MRI>"SECT" { RTOKEN(SECT); } |
| 296 | <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE" { RTOKEN(ABSOLUTE); } |
| 297 | <MRI>"end" { RTOKEN(ENDWORD); } |
| 298 | <MRI>"alignmod" { RTOKEN(ALIGNMOD);} |
| 299 | <MRI>"align" { RTOKEN(ALIGN_K);} |
| 300 | <MRI>"chip" { RTOKEN(CHIP); } |
| 301 | <MRI>"base" { RTOKEN(BASE); } |
| 302 | <MRI>"alias" { RTOKEN(ALIAS); } |
| 303 | <MRI>"truncate" { RTOKEN(TRUNCATE); } |
| 304 | <MRI>"load" { RTOKEN(LOAD); } |
| 305 | <MRI>"public" { RTOKEN(PUBLIC); } |
| 306 | <MRI>"order" { RTOKEN(ORDER); } |
| 307 | <MRI>"name" { RTOKEN(NAMEWORD); } |
| 308 | <MRI>"format" { RTOKEN(FORMAT); } |
| 309 | <MRI>"case" { RTOKEN(CASE); } |
| 310 | <MRI>"extern" { RTOKEN(EXTERN); } |
| 311 | <MRI>"start" { RTOKEN(START); } |
| 312 | <MRI>"list".* { RTOKEN(LIST); /* LIST and ignore to end of line */ } |
| 313 | <MRI>"sect" { RTOKEN(SECT); } |
| 314 | <EXPRESSION,BOTH,SCRIPT,MRI>"absolute" { RTOKEN(ABSOLUTE); } |
| 315 | |
| 316 | <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}* { |
| 317 | /* Filename without commas, needed to parse mri stuff */ |
| 318 | yylval.name = buystring(yytext); |
| 319 | return NAME; |
| 320 | } |
| 321 | |
| 322 | |
| 323 | <BOTH,EXPRESSION>{FILENAMECHAR1}{FILENAMECHAR}* { |
| 324 | yylval.name = buystring(yytext); |
| 325 | return NAME; |
| 326 | } |
| 327 | <BOTH,EXPRESSION>"-l"{FILENAMECHAR}+ { |
| 328 | yylval.name = buystring (yytext + 2); |
| 329 | return LNAME; |
| 330 | } |
| 331 | <SCRIPT>{WILDCHAR}* { yylval.name = buystring(yytext); return NAME; } |
| 332 | |
| 333 | <EXPRESSION,BOTH,SCRIPT>"\""[^\"]*"\"" { |
| 334 | /* No matter the state, quotes |
| 335 | give what's inside */ |
| 336 | yylval.name = buystring(yytext+1); |
| 337 | yylval.name[yyleng-2] = 0; |
| 338 | return NAME; |
| 339 | } |
| 340 | <BOTH,SCRIPT,EXPRESSION>"\n" { lineno++;} |
| 341 | <BOTH,SCRIPT,EXPRESSION>"\r" { lineno++;} |
| 342 | <MRI,BOTH,SCRIPT,EXPRESSION>[ \t] |
| 343 | |
| 344 | <<EOF>> { |
| 345 | include_stack_ptr--; |
| 346 | |
| 347 | if (include_stack_ptr == 0) |
| 348 | { |
| 349 | yyterminate(); |
| 350 | } |
| 351 | else |
| 352 | { |
| 353 | yy_switch_to_buffer(include_stack[include_stack_ptr]); |
| 354 | |
| 355 | } |
| 356 | BEGIN(SCRIPT); |
| 357 | ldfile_input_filename = file_name_stack[include_stack_ptr - 1]; |
| 358 | lineno = lineno_stack[include_stack_ptr - 1]; |
| 359 | |
| 360 | return END; |
| 361 | } |
| 362 | |
| 363 | <SCRIPT,MRI>. lex_warn_invalid(" in script", yytext); |
| 364 | <EXPRESSION,DEFSYMEXP,BOTH>. lex_warn_invalid(" in expression", yytext); |
| 365 | |
| 366 | %% |
| 367 | \f |
| 368 | |
| 369 | /* Switch flex to reading script file NAME, open on FILE, |
| 370 | saving the current input info on the include stack. */ |
| 371 | |
| 372 | void |
| 373 | lex_push_file (file, name) |
| 374 | FILE *file; |
| 375 | const char *name; |
| 376 | { |
| 377 | if (include_stack_ptr >= MAX_INCLUDE_DEPTH) |
| 378 | { |
| 379 | einfo("%F:includes nested too deeply\n"); |
| 380 | } |
| 381 | file_name_stack[include_stack_ptr] = name; |
| 382 | lineno_stack[include_stack_ptr] = 1; |
| 383 | include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; |
| 384 | |
| 385 | include_stack_ptr++; |
| 386 | yyin = file; |
| 387 | yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE)); |
| 388 | BEGIN (SCRIPT); |
| 389 | } |
| 390 | |
| 391 | /* Return a newly created flex input buffer containing STRING, |
| 392 | which is SIZE bytes long. */ |
| 393 | |
| 394 | static YY_BUFFER_STATE |
| 395 | yy_create_string_buffer (string, size) |
| 396 | CONST char *string; |
| 397 | size_t size; |
| 398 | { |
| 399 | YY_BUFFER_STATE b; |
| 400 | |
| 401 | /* Calls to m-alloc get turned by sed into xm-alloc. */ |
| 402 | b = (YY_BUFFER_STATE) malloc (sizeof (struct yy_buffer_state)); |
| 403 | b->yy_input_file = 0; |
| 404 | b->yy_buf_size = size; |
| 405 | |
| 406 | /* yy_ch_buf has to be 2 characters longer than the size given because |
| 407 | we need to put in 2 end-of-buffer characters. */ |
| 408 | b->yy_ch_buf = (char *) malloc ((unsigned) (b->yy_buf_size + 3)); |
| 409 | |
| 410 | b->yy_ch_buf[0] = '\n'; |
| 411 | strcpy (b->yy_ch_buf+1, string); |
| 412 | b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR; |
| 413 | b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR; |
| 414 | b->yy_n_chars = size+1; |
| 415 | b->yy_buf_pos = &b->yy_ch_buf[1]; |
| 416 | |
| 417 | /* flex 2.4.7 changed the interface. FIXME: We should not be using |
| 418 | a flex internal interface in the first place! */ |
| 419 | #ifdef YY_BUFFER_NEW |
| 420 | b->yy_buffer_status = YY_BUFFER_NEW; |
| 421 | #else |
| 422 | b->yy_eof_status = EOF_NOT_SEEN; |
| 423 | #endif |
| 424 | |
| 425 | return b; |
| 426 | } |
| 427 | |
| 428 | /* Switch flex to reading from STRING, saving the current input info |
| 429 | on the include stack. */ |
| 430 | |
| 431 | void |
| 432 | lex_redirect (string) |
| 433 | CONST char *string; |
| 434 | { |
| 435 | YY_BUFFER_STATE tmp; |
| 436 | |
| 437 | yy_init = 0; |
| 438 | if (include_stack_ptr >= MAX_INCLUDE_DEPTH) |
| 439 | { |
| 440 | einfo("%F: macros nested too deeply\n"); |
| 441 | } |
| 442 | file_name_stack[include_stack_ptr] = "redirect"; |
| 443 | lineno_stack[include_stack_ptr] = 0; |
| 444 | include_stack[include_stack_ptr] = YY_CURRENT_BUFFER; |
| 445 | include_stack_ptr++; |
| 446 | tmp = yy_create_string_buffer (string, strlen (string)); |
| 447 | yy_switch_to_buffer (tmp); |
| 448 | BEGIN (SCRIPT); |
| 449 | } |
| 450 | \f |
| 451 | /* Functions to switch to a different flex start condition, |
| 452 | saving the current start condition on `state_stack'. */ |
| 453 | |
| 454 | static int state_stack[MAX_INCLUDE_DEPTH * 2]; |
| 455 | static int *state_stack_p = state_stack; |
| 456 | |
| 457 | void |
| 458 | ldlex_script () |
| 459 | { |
| 460 | *(state_stack_p)++ = yy_start; |
| 461 | BEGIN (SCRIPT); |
| 462 | } |
| 463 | |
| 464 | void |
| 465 | ldlex_mri_script () |
| 466 | { |
| 467 | *(state_stack_p)++ = yy_start; |
| 468 | BEGIN (MRI); |
| 469 | } |
| 470 | |
| 471 | void |
| 472 | ldlex_defsym () |
| 473 | { |
| 474 | *(state_stack_p)++ = yy_start; |
| 475 | BEGIN (DEFSYMEXP); |
| 476 | } |
| 477 | |
| 478 | void |
| 479 | ldlex_expression () |
| 480 | { |
| 481 | *(state_stack_p)++ = yy_start; |
| 482 | BEGIN (EXPRESSION); |
| 483 | } |
| 484 | |
| 485 | void |
| 486 | ldlex_both () |
| 487 | { |
| 488 | *(state_stack_p)++ = yy_start; |
| 489 | BEGIN (BOTH); |
| 490 | } |
| 491 | |
| 492 | void |
| 493 | ldlex_popstate () |
| 494 | { |
| 495 | yy_start = *(--state_stack_p); |
| 496 | } |
| 497 | \f |
| 498 | |
| 499 | /* Place up to MAX_SIZE characters in BUF and return in *RESULT |
| 500 | either the number of characters read, or 0 to indicate EOF. */ |
| 501 | |
| 502 | static void |
| 503 | yy_input (buf, result, max_size) |
| 504 | char *buf; |
| 505 | int *result; |
| 506 | int max_size; |
| 507 | { |
| 508 | *result = 0; |
| 509 | if (yy_current_buffer->yy_input_file) |
| 510 | { |
| 511 | if (yyin) |
| 512 | { |
| 513 | *result = read (fileno (yyin), (char *) buf, max_size); |
| 514 | if (*result < 0) |
| 515 | einfo ("%F%P: read in flex scanner failed"); |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | /* Eat the rest of a C-style comment. */ |
| 521 | |
| 522 | static void |
| 523 | comment () |
| 524 | { |
| 525 | int c; |
| 526 | |
| 527 | while (1) |
| 528 | { |
| 529 | c = input(); |
| 530 | while (c != '*' && c != EOF) |
| 531 | { |
| 532 | if (c == '\n' || c == '\r') |
| 533 | lineno++; |
| 534 | c = input(); |
| 535 | } |
| 536 | |
| 537 | if (c == '*') |
| 538 | { |
| 539 | c = input(); |
| 540 | while (c == '*') |
| 541 | c = input(); |
| 542 | if (c == '/') |
| 543 | break; /* found the end */ |
| 544 | } |
| 545 | |
| 546 | if (c == '\n' || c == '\r') |
| 547 | lineno++; |
| 548 | |
| 549 | if (c == EOF) |
| 550 | { |
| 551 | einfo( "%F%P: EOF in comment\n"); |
| 552 | break; |
| 553 | } |
| 554 | } |
| 555 | } |
| 556 | |
| 557 | /* Warn the user about a garbage character WHAT in the input |
| 558 | in context WHERE. */ |
| 559 | |
| 560 | static void |
| 561 | lex_warn_invalid (where, what) |
| 562 | char *where, *what; |
| 563 | { |
| 564 | char buf[5]; |
| 565 | |
| 566 | /* If we have found an input file whose format we do not recognize, |
| 567 | and we are therefore treating it as a linker script, and we find |
| 568 | an invalid character, then most likely this is a real object file |
| 569 | of some different format. Treat it as such. */ |
| 570 | if (ldfile_assumed_script) |
| 571 | { |
| 572 | bfd_set_error (bfd_error_file_not_recognized); |
| 573 | einfo ("%F%s: file not recognized: %E\n", ldfile_input_filename); |
| 574 | } |
| 575 | |
| 576 | if (! isprint ((unsigned char) *what)) |
| 577 | { |
| 578 | sprintf (buf, "\\%03o", (unsigned int) *what); |
| 579 | what = buf; |
| 580 | } |
| 581 | |
| 582 | einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where); |
| 583 | } |