ld/ldlex.l

   1 %{
   2 /* Copyright (C) 1991 Free Software Foundation, Inc.
   3
   4 This file is part of GLD, the Gnu Linker.
   5
   6 GLD is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GLD 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.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GLD; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /*
  21 This was written by steve chamberlain
  22                     sac@cygnus.com
  23 */
  24
  25
  26 typedef int bfd_vma;
  27 #include <ansidecl.h>
  28 #include "ldgram.h"
  29
  30 int ldgram_in_defsym;
  31 int ldgram_had_equals;
  32 int ldgram_in_script;
  33
  34 int hex_mode;
  35 extern int fgetc();
  36 extern int yyparse();
  37
  38
  39
  40 char *buystring();
  41
  42 int lineno = 1;
  43 int old;
  44
  45 #undef YY_INPUT
  46 #define YY_INPUT(buf,result,max_size) yy_input(buf, &result, max_size)
  47 #undef YY_FATAL_ERROR
  48 #define YY_FATAL_ERROR ;
  49 #define MAX_INCLUDE_DEPTH 10
  50 YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
  51 unsigned int include_stack_ptr = 0;
  52
  53
  54 /* STATES
  55         COMMAND         on command line
  56         COMMENT         in a C comment
  57         EXPRESSION      definiatelyt in an expression
  58         SCRIPT          definately in a script
  59         SOMEWHERE       either EXPRESSION or SCRIPT
  60         MRI             in an MRI script
  61 */
  62 #define RTOKEN(x)  {  yylval.token = x; return x; }
  63 %}
  64
  65 %a 4000
  66 %o 5000
  67 FILENAMECHAR1   [_a-zA-Z\/\.\\]
  68 FILENAMECHAR    [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\]
  69 FILENAME        {FILENAMECHAR}+
  70 WHITE           [ \t\n]+
  71
  72 %x COMMAND
  73 %x SCRIPT
  74 %x EXPRESSION
  75 %x COMMENT
  76 %x BOTH
  77 %x MRI
  78 %%
  79
  80 <COMMAND>"-defsym"              { return OPTION_defsym; }
  81 <COMMAND>"-noinhibit_exec"      { return OPTION_noinhibit_exec; }
  82 <COMMAND>"-noinhibit-exec"      { return OPTION_noinhibit_exec; }
  83 <COMMAND>"-sort_common"         { return OPTION_sort_common;}
  84 <COMMAND>"-sort-common"         { return OPTION_sort_common;}
  85 <COMMAND>"-format"              { return OPTION_format; }
  86 <COMMAND>"-n"                   { return OPTION_n; }
  87 <COMMAND>"-N"                   { return OPTION_N; }
  88 <COMMAND>"-r"                   { return OPTION_r; }
  89 <COMMAND>"-relax"               { return OPTION_relax; }
  90 <COMMAND>"-i"                   { return OPTION_r; }
  91 <COMMAND>"-Ur"                  { return OPTION_Ur; }
  92 <COMMAND>"-o"                   { return OPTION_o; }
  93 <COMMAND>"-g"                   { return OPTION_g; }
  94 <COMMAND>"-e"                   { return OPTION_e; }
  95 <COMMAND>"-b"                   { return OPTION_b; }
  96 <COMMAND>"-dc"                  { return OPTION_dc; }
  97 <COMMAND>"-dp"                  { return OPTION_dp; }
  98 <COMMAND>"-d"                   { return OPTION_d; }
  99 <COMMAND>"-v"                   { return OPTION_v; }
 100 <COMMAND>"-V"                   { return OPTION_V; }
 101 <COMMAND>"-M"                   { return OPTION_M; }
 102 <COMMAND>"-Map"                 { return OPTION_Map;}
 103 <COMMAND>"-t"                   { return OPTION_t; }
 104 <COMMAND>"-X"                   { return OPTION_X; }
 105 <COMMAND>"-x"                   { return OPTION_x; }
 106 <COMMAND>"-c"                   { return OPTION_c; }
 107 <COMMAND>"-R"                   { return OPTION_R; }
 108 <COMMAND>"-u"                   { return OPTION_u; }
 109 <COMMAND>"-s"                   { return OPTION_s; }
 110 <COMMAND>"-S"                   { return OPTION_S; }
 111 <COMMAND>"-Bstat"               { return OPTION_Bstatic; }
 112 <COMMAND>"-B"{FILENAME}         { /* Ignored */ }
 113 <COMMAND>"-l"{FILENAME}         {
 114                                         yylval.name = buystring(yytext+2);
 115                                         return OPTION_l;
 116                                 }
 117
 118 <COMMAND>"-L"{FILENAME}         {
 119                                         yylval.name = buystring(yytext+2);
 120                                         return OPTION_L;
 121                                 }
 122 <COMMAND>"-Ttext"               {
 123                                  yylval.name = ".text";
 124                                  return OPTION_Texp;
 125                                 }
 126 <COMMAND>"-Tdata"               {
 127                                  yylval.name = ".data";
 128                                  return OPTION_Texp;
 129                                }
 130 <COMMAND>"-Tbss"                {
 131                                  yylval.name = ".bss";
 132                                  return OPTION_Texp;
 133                                }
 134 <COMMAND>"-O"{FILENAME}         {
 135                                 yylval.name = buystring(yytext+2);
 136                                 return OPTION_Texp;
 137                                 }
 138
 139 <COMMAND>"-T"{FILENAME}         {
 140                                  yylval.name = buystring(yytext+2);
 141                                  return OPTION_Tfile;
 142                                }
 143 <COMMAND>"-T"                   {
 144                                  return OPTION_T;
 145                                }
 146
 147 <COMMAND>"-F"{FILENAME}         {
 148                                  return OPTION_F;
 149                                }
 150 <COMMAND>"-F"                   {
 151                                  return OPTION_F;
 152                                }
 153
 154 <COMMAND>"-A"{FILENAME}         {
 155                                         yylval.name = buystring(yytext+2);
 156                                         return OPTION_Aarch;
 157                                 }
 158
 159 <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {
 160                                 yylval.integer = strtol(yytext+1, 0,16);
 161                                 return INT;
 162                         }
 163
 164 <MRI,EXPRESSION>([0-9A-Fa-f])+(H|X|B|O|D)
 165                                  {
 166                                    int base ;
 167                                    switch (yytext[yyleng-1]) {
 168                                     case 'X':
 169                                     case 'H':
 170                                      base = 16;
 171                                      break;
 172                                     case 'O':
 173                                      base = 8;
 174                                      break;
 175                                     case 'B':
 176                                      base = 2;
 177                                      break;
 178                                     default:
 179                                      base = 10;
 180                                    }
 181                                    yylval.integer = strtol(yytext+1, 0, base);
 182                                    return INT;
 183                                  }
 184 <MRI,BOTH,EXPRESSION>"$"?"0x"?([0-9A-Fa-f])+(M|K|m|k)? {
 185                                   yylval.integer = strtol(yytext,0,hex_mode);
 186                                   if (yytext[yyleng-1]=='M'
 187                                         || yytext[yyleng-1] == 'm') {
 188                                       yylval.integer *= 1024*1024;
 189                                     }
 190                                   if (yytext[yyleng-1]=='K'
 191                                 || yytext[yyleng-1]=='k') {
 192                                       yylval.integer *= 1024;
 193                                     }
 194                                   return INT;
 195                                 }
 196 <BOTH,SCRIPT,EXPRESSION>"]"             { RTOKEN(']');}
 197 <BOTH,SCRIPT,EXPRESSION>"["             { RTOKEN('[');}
 198 <BOTH,SCRIPT,EXPRESSION>"<<="   { RTOKEN(LSHIFTEQ);}
 199 <BOTH,SCRIPT,EXPRESSION>">>="   { RTOKEN(RSHIFTEQ);}
 200 <BOTH,SCRIPT,EXPRESSION>"||"    { RTOKEN(OROR);}
 201 <BOTH,SCRIPT,EXPRESSION>"=="    { RTOKEN(EQ);}
 202 <BOTH,SCRIPT,EXPRESSION>"!="    { RTOKEN(NE);}
 203 <BOTH,SCRIPT,EXPRESSION>">="    { RTOKEN(GE);}
 204 <BOTH,SCRIPT,EXPRESSION>"<="    { RTOKEN(LE);}
 205 <BOTH,SCRIPT,EXPRESSION>"<<"    { RTOKEN(LSHIFT);}
 206 <BOTH,SCRIPT,EXPRESSION>">>"    { RTOKEN(RSHIFT);}
 207 <BOTH,SCRIPT,EXPRESSION>"+="    { RTOKEN(PLUSEQ);}
 208 <BOTH,SCRIPT,EXPRESSION>"-="    { RTOKEN(MINUSEQ);}
 209 <BOTH,SCRIPT,EXPRESSION>"*="    { RTOKEN(MULTEQ);}
 210 <BOTH,SCRIPT,EXPRESSION>"/="    { RTOKEN(DIVEQ);}
 211 <BOTH,SCRIPT,EXPRESSION>"&="    { RTOKEN(ANDEQ);}
 212 <BOTH,SCRIPT,EXPRESSION>"|="    { RTOKEN(OREQ);}
 213 <BOTH,SCRIPT,EXPRESSION>"&&"    { RTOKEN(ANDAND);}
 214 <BOTH,SCRIPT,EXPRESSION>">"             { RTOKEN('>');}
 215 <MRI,BOTH,SCRIPT,EXPRESSION>","         { RTOKEN(',');}
 216 <BOTH,SCRIPT,EXPRESSION>"&"             { RTOKEN('&');}
 217 <BOTH,SCRIPT,EXPRESSION>"|"             { RTOKEN('|');}
 218 <BOTH,SCRIPT,EXPRESSION>"~"             { RTOKEN('~');}
 219 <BOTH,SCRIPT,EXPRESSION>"!"             { RTOKEN('!');}
 220 <BOTH,SCRIPT,EXPRESSION>"?"             { RTOKEN('?');}
 221 <BOTH,SCRIPT,EXPRESSION>"*"             { RTOKEN('*');}
 222 <BOTH,SCRIPT,EXPRESSION>"+"             { RTOKEN('+');}
 223 <BOTH,SCRIPT,EXPRESSION>"-"             { RTOKEN('-');}
 224 <BOTH,SCRIPT,EXPRESSION>"/"             { RTOKEN('/');}
 225 <BOTH,SCRIPT,EXPRESSION>"%"             { RTOKEN('%');}
 226 <BOTH,SCRIPT,EXPRESSION>"<"             { RTOKEN('<');}
 227 <BOTH,SCRIPT,EXPRESSION>">"             { RTOKEN('>');}
 228 <MRI,BOTH,SCRIPT,EXPRESSION>"="          { RTOKEN('=');}
 229 <BOTH,SCRIPT,EXPRESSION>"}"                     { RTOKEN('}') ; }
 230 <BOTH,SCRIPT,EXPRESSION>"{"                     { RTOKEN('{'); }
 231 <BOTH,SCRIPT,EXPRESSION>")"                     { RTOKEN(')');}
 232 <BOTH,SCRIPT,EXPRESSION>"("                     { RTOKEN('(');}
 233 <BOTH,SCRIPT,EXPRESSION>"]"             { RTOKEN(']');}
 234 <BOTH,SCRIPT,EXPRESSION>"["             { RTOKEN('[');}
 235 <BOTH,SCRIPT,EXPRESSION>":"             { RTOKEN(':'); }
 236 <BOTH,SCRIPT,EXPRESSION>";"             { RTOKEN(';');}
 237 <BOTH,SCRIPT,EXPRESSION>"-"             { RTOKEN('-');}
 238 <BOTH,SCRIPT,EXPRESSION>"/"             { RTOKEN('/');}
 239 <BOTH,SCRIPT>"MEMORY"           { RTOKEN(MEMORY);}
 240 <BOTH,SCRIPT>"ORIGIN"           { RTOKEN(ORIGIN);}
 241 <BOTH,SCRIPT>"BLOCK"                    { RTOKEN(BLOCK);}
 242 <BOTH,SCRIPT>"LENGTH"           { RTOKEN(LENGTH);}
 243 <EXPRESSION,BOTH,SCRIPT>"ALIGN"                 { RTOKEN(ALIGN_K);}
 244 <EXPRESSION,BOTH,SCRIPT>"ADDR"                  { RTOKEN(ADDR);}
 245 <BOTH,SCRIPT>"ENTRY"                    { RTOKEN(ENTRY);}
 246 <EXPRESSION,BOTH,SCRIPT>"NEXT"                  { RTOKEN(NEXT);}
 247 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers"        { RTOKEN(SIZEOF_HEADERS);}
 248 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS"        { RTOKEN(SIZEOF_HEADERS);}
 249 <BOTH,SCRIPT>"MAP"                      { RTOKEN(MAP);}
 250 <EXPRESSION,BOTH,SCRIPT>"SIZEOF"                { RTOKEN(SIZEOF);}
 251 <BOTH,SCRIPT>"TARGET"           { RTOKEN(TARGET_K);}
 252 <BOTH,SCRIPT>"SEARCH_DIR"               { RTOKEN(SEARCH_DIR);}
 253 <BOTH,SCRIPT>"OUTPUT"           { RTOKEN(OUTPUT);}
 254 <BOTH,SCRIPT>"INPUT"                    { RTOKEN(INPUT);}
 255 <BOTH,SCRIPT>"DEFINED"          { RTOKEN(DEFINED);}
 256 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS"    { RTOKEN(CREATE_OBJECT_SYMBOLS);}
 257 <BOTH,SCRIPT>"CONSTRUCTORS"             { RTOKEN( CONSTRUCTORS);}
 258 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);}
 259 <BOTH,SCRIPT>"SECTIONS"         { RTOKEN(SECTIONS);}
 260 <BOTH,SCRIPT>"FILL"                     { RTOKEN(FILL);}
 261 <BOTH,SCRIPT>"STARTUP"          { RTOKEN(STARTUP);}
 262 <BOTH,SCRIPT>"OUTPUT_FORMAT"            { RTOKEN(OUTPUT_FORMAT);}
 263 <BOTH,SCRIPT>"OUTPUT_ARCH"              { RTOKEN( OUTPUT_ARCH);}
 264 <BOTH,SCRIPT>"HLL"                      { RTOKEN(HLL);}
 265 <BOTH,SCRIPT>"SYSLIB"           { RTOKEN(SYSLIB);}
 266 <BOTH,SCRIPT>"FLOAT"                    { RTOKEN(FLOAT);}
 267 <BOTH,SCRIPT>"LONG"                     { RTOKEN( LONG);}
 268 <BOTH,SCRIPT>"SHORT"                    { RTOKEN( SHORT);}
 269 <BOTH,SCRIPT>"BYTE"                     { RTOKEN( BYTE);}
 270 <BOTH,SCRIPT>"NOFLOAT"          { RTOKEN(NOFLOAT);}
 271 <BOTH,SCRIPT>"NOLOAD"           { RTOKEN(NOLOAD);}
 272 <BOTH,SCRIPT>"DSECT"                    { RTOKEN(DSECT);}
 273 <BOTH,SCRIPT>"COPY"                     { RTOKEN(COPY);}
 274 <BOTH,SCRIPT>"INFO"                     { RTOKEN(INFO);}
 275 <BOTH,SCRIPT>"OVERLAY"          { RTOKEN(OVERLAY);}
 276 <BOTH,SCRIPT>"o"                        { RTOKEN(ORIGIN);}
 277 <BOTH,SCRIPT>"org"                      { RTOKEN(ORIGIN);}
 278 <BOTH,SCRIPT>"l"                        { RTOKEN( LENGTH);}
 279 <BOTH,SCRIPT>"len"                      { RTOKEN( LENGTH);}
 280
 281 <MRI>^"*".*                     { /* Mri comment line */ }
 282 <MRI>\n                         { ++ lineno;  }
 283 <MRI>"CHIP"                     { RTOKEN(CHIP); }
 284 <MRI>"LOAD"                     { RTOKEN(LOAD); }
 285 <MRI>"LIST".*\n                 { RTOKEN(LIST); /* LIST and ignore to end of line */ }
 286 <MRI>"SECT"                     { RTOKEN(SECT); }
 287 <MRI>"ABSOLUTE"                 { RTOKEN(ABSOLUTE); }
 288
 289 <MRI,BOTH,EXPRESSION>{FILENAMECHAR1}{FILENAMECHAR}*     {
 290                                  yylval.name = buystring(yytext);
 291                                   return NAME;
 292                                 }
 293 <SCRIPT,COMMAND>{FILENAMECHAR}* { yylval.name = buystring(yytext);
 294                                   return NAME;
 295                                 }
 296
 297 <EXPRESSION,BOTH,COMMAND,SCRIPT>"\""[^\"]*"\"" {
 298                                         /* No matter the state, quotes
 299                                            give what's inside */
 300                                         yylval.name = buystring(yytext+1);
 301                                         yylval.name[yyleng-2] = 0;
 302                                         return NAME;
 303                                 }
 304 <BOTH,SCRIPT,EXPRESSION>"\n"            { lineno++;}
 305 <MRI,COMMAND,BOTH,SCRIPT,EXPRESSION>[ \t]
 306
 307 "/*"                            { old = INITIAL; BEGIN(COMMENT); }
 308 <COMMAND>"/*"                   { old = COMMAND; BEGIN(COMMENT); }
 309 <BOTH>"/*"                      { old =BOTH; BEGIN(COMMENT); }
 310 <SCRIPT>"/*"                    { old = EXPRESSION; BEGIN(COMMENT); }
 311 <EXPRESSION>"/*"                { old = SCRIPT; BEGIN(COMMENT); }
 312 "/*"                            { old = INITIAL; BEGIN(COMMENT); }
 313 <COMMENT>[^*\\n]*
 314 <COMMENT>"*"+[^*/\\n]*
 315 <COMMENT>\\n                    { ++lineno;}
 316 <COMMENT>"*"+"/"                { BEGIN(old); }
 317
 318
 319 <<EOF>> {
 320     include_stack_ptr--;
 321
 322     if (include_stack_ptr == 0)
 323     {
 324       yyterminate();
 325     }
 326     else
 327     {
 328       yy_switch_to_buffer(include_stack[include_stack_ptr]);
 329     }
 330         BEGIN(COMMAND);
 331         return END;
 332   }
 333
 334
 335
 336
 337
 338
 339
 340
 341 %%
 342
 343 void
 344 DEFUN(lex_push_file,(file),
 345      FILE *file)
 346 {
 347   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
 348   {
 349     einfo("%F:includes nested too deeply");
 350   }
 351   include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
 352   yyin = file;
 353   yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
 354
 355   BEGIN(SCRIPT);
 356 }
 357
 358 YY_BUFFER_STATE
 359 DEFUN(yy_create_string_buffer,(string,  size),
 360       CONST char *string AND
 361       int size )
 362 {
 363   YY_BUFFER_STATE b;
 364
 365   b = (YY_BUFFER_STATE) malloc( sizeof( struct yy_buffer_state ) );
 366   b->yy_input_file = 0;
 367
 368   if ( ! b )
 369    YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 370
 371   b->yy_buf_size = size;
 372
 373   /* yy_ch_buf has to be 2 characters longer than the size given because
 374    * we need to put in 2 end-of-buffer characters.
 375    */
 376   b->yy_ch_buf = (YY_CHAR *) malloc( (unsigned) (b->yy_buf_size + 3) );
 377
 378   if ( ! b->yy_ch_buf )
 379    YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 380
 381
 382   b->yy_ch_buf[0] = '\n';
 383   strcpy(b->yy_ch_buf+1,  string);
 384   b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR;
 385   b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR;
 386     b->yy_n_chars = size+1;
 387   b->yy_buf_pos = &b->yy_ch_buf[1];
 388
 389   b->yy_eof_status = EOF_NOT_SEEN;
 390
 391   return ( b );
 392 }
 393
 394
 395
 396 void
 397 DEFUN(lex_redirect,( string),
 398     CONST  char *string)
 399 {
 400   YY_BUFFER_STATE tmp;
 401
 402   int len = strlen(string);
 403 yy_init = 0  ;
 404   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
 405   {
 406     einfo("%F: macros nested too deeply");
 407   }
 408   include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
 409
 410   tmp =   yy_create_string_buffer(string, len);
 411
 412   yy_switch_to_buffer(tmp);
 413   BEGIN(COMMAND);
 414 yyout = stdout;
 415 }
 416
 417 int state_stack[20];
 418 int *state_stack_p = state_stack;
 419
 420 void
 421 DEFUN_VOID(ldlex_script)
 422 {
 423 *(state_stack_p)++ = yy_start;
 424
 425 BEGIN(SCRIPT);
 426 }
 427
 428
 429 void
 430 DEFUN_VOID(ldlex_mri_script)
 431 {
 432   *(state_stack_p)++ = yy_start;
 433   BEGIN(MRI);
 434 }
 435
 436 void
 437 DEFUN_VOID(ldlex_expression)
 438 {
 439 *(state_stack_p)++ = yy_start;
 440 BEGIN(EXPRESSION);
 441
 442 }
 443 void
 444 DEFUN_VOID(ldlex_both)
 445 {
 446 *(state_stack_p)++ = yy_start;
 447 BEGIN(BOTH);
 448 }
 449 void
 450 DEFUN_VOID(ldlex_command)
 451 {
 452 *(state_stack_p)++ = yy_start;
 453 BEGIN(COMMAND);
 454 }
 455
 456 void
 457 DEFUN_VOID(ldlex_popstate)
 458 {
 459 yy_start = *(--state_stack_p);
 460 }
 461
 462 yy_input(buf, result, max_size)
 463 char *buf;
 464 int *result;
 465 int max_size;
 466 {
 467   *result = 0;
 468   if (yy_current_buffer->yy_input_file)
 469   {
 470     if (yyin)
 471      if ( (*result = read( fileno(yyin), (char *) buf, max_size )) < 0 )
 472       YY_FATAL_ERROR( "read() in flex scanner failed" );
 473   }
 474 }
 475