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 /* FOUR 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 */
  61 #define RTOKEN(x)  {  yylval.token = x; return x; }
  62 %}
  63
  64 %a 4000
  65 %o 5000
  66 FILENAMECHAR1   [_a-zA-Z\/\.\\]
  67 FILENAMECHAR    [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\]
  68 FILENAME        {FILENAMECHAR}+
  69 WHITE           [ \t\n]+
  70
  71 %x COMMAND
  72 %x SCRIPT
  73 %x EXPRESSION
  74 %x COMMENT
  75 %x BOTH
  76 %%
  77
  78 <COMMAND>"-defsym"              { return OPTION_defsym; }
  79 <COMMAND>"-noinhibit_exec"      { return OPTION_noinhibit_exec; }
  80 <COMMAND>"-noinhibit-exec"      { return OPTION_noinhibit_exec; }
  81 <COMMAND>"-sort_common"         { return OPTION_sort_common;}
  82 <COMMAND>"-sort-common"         { return OPTION_sort_common;}
  83 <COMMAND>"-format"              { return OPTION_format; }
  84 <COMMAND>"-n"                   { return OPTION_n; }
  85 <COMMAND>"-N"                   { return OPTION_N; }
  86 <COMMAND>"-r"                   { return OPTION_r; }
  87 <COMMAND>"-relax"               { return OPTION_relax; }
  88 <COMMAND>"-i"                   { return OPTION_r; }
  89 <COMMAND>"-Ur"                  { return OPTION_Ur; }
  90 <COMMAND>"-o"                   { return OPTION_o; }
  91 <COMMAND>"-g"                   { return OPTION_g; }
  92 <COMMAND>"-e"                   { return OPTION_e; }
  93 <COMMAND>"-b"                   { return OPTION_b; }
  94 <COMMAND>"-dc"                  { return OPTION_dc; }
  95 <COMMAND>"-dp"                  { return OPTION_dp; }
  96 <COMMAND>"-d"                   { return OPTION_d; }
  97 <COMMAND>"-v"                   { return OPTION_v; }
  98 <COMMAND>"-V"                   { return OPTION_V; }
  99 <COMMAND>"-M"                   { return OPTION_M; }
 100 <COMMAND>"-Map"                 { return OPTION_Map;}
 101 <COMMAND>"-t"                   { return OPTION_t; }
 102 <COMMAND>"-X"                   { return OPTION_X; }
 103 <COMMAND>"-x"                   { return OPTION_x; }
 104 <COMMAND>"-c"                   { return OPTION_c; }
 105 <COMMAND>"-R"                   { return OPTION_R; }
 106 <COMMAND>"-u"                   { return OPTION_u; }
 107 <COMMAND>"-s"                   { return OPTION_s; }
 108 <COMMAND>"-S"                   { return OPTION_S; }
 109 <COMMAND>"-Bstat"               { return OPTION_Bstatic; }
 110 <COMMAND>"-B"{FILENAME}         { /* Ignored */ }
 111 <COMMAND>"-l"{FILENAME}         {
 112                                         yylval.name = buystring(yytext+2);
 113                                         return OPTION_l;
 114                                 }
 115
 116 <COMMAND>"-L"{FILENAME}         {
 117                                         yylval.name = buystring(yytext+2);
 118                                         return OPTION_L;
 119                                 }
 120 <COMMAND>"-Ttext"               {
 121                                  yylval.name = ".text";
 122                                  return OPTION_Texp;
 123                                 }
 124 <COMMAND>"-Tdata"               {
 125                                  yylval.name = ".data";
 126                                  return OPTION_Texp;
 127                                }
 128 <COMMAND>"-Tbss"                {
 129                                  yylval.name = ".bss";
 130                                  return OPTION_Texp;
 131                                }
 132 <COMMAND>"-O"{FILENAME}         {
 133                                 yylval.name = buystring(yytext+2);
 134                                 return OPTION_Texp;
 135                                 }
 136
 137 <COMMAND>"-T"{FILENAME}         {
 138                                  yylval.name = buystring(yytext+2);
 139                                  return OPTION_Tfile;
 140                                }
 141 <COMMAND>"-T"                   {
 142                                  return OPTION_T;
 143                                }
 144
 145 <COMMAND>"-F"{FILENAME}         {
 146                                  return OPTION_F;
 147                                }
 148 <COMMAND>"-F"                   {
 149                                  return OPTION_F;
 150                                }
 151
 152 <COMMAND>"-A"{FILENAME}         {
 153                                         yylval.name = buystring(yytext+2);
 154                                         return OPTION_Aarch;
 155                                 }
 156 <BOTH,EXPRESSION>"0x"?([0-9A-Fa-f])+(M|K|m|k)? {
 157                                   yylval.integer = strtol(yytext,0,hex_mode);
 158                                   if (yytext[yyleng-1]=='M'
 159                                         || yytext[yyleng-1] == 'm') {
 160                                       yylval.integer *= 1024*1024;
 161                                     }
 162                                   if (yytext[yyleng-1]=='K'
 163                                 || yytext[yyleng-1]=='k') {
 164                                       yylval.integer *= 1024;
 165                                     }
 166                                   return INT;
 167                                 }
 168 <BOTH,SCRIPT,EXPRESSION>"]"             { RTOKEN(']');}
 169 <BOTH,SCRIPT,EXPRESSION>"["             { RTOKEN('[');}
 170 <BOTH,SCRIPT,EXPRESSION>"<<="   { RTOKEN(LSHIFTEQ);}
 171 <BOTH,SCRIPT,EXPRESSION>">>="   { RTOKEN(RSHIFTEQ);}
 172 <BOTH,SCRIPT,EXPRESSION>"||"    { RTOKEN(OROR);}
 173 <BOTH,SCRIPT,EXPRESSION>"=="    { RTOKEN(EQ);}
 174 <BOTH,SCRIPT,EXPRESSION>"!="    { RTOKEN(NE);}
 175 <BOTH,SCRIPT,EXPRESSION>">="    { RTOKEN(GE);}
 176 <BOTH,SCRIPT,EXPRESSION>"<="    { RTOKEN(LE);}
 177 <BOTH,SCRIPT,EXPRESSION>"<<"    { RTOKEN(LSHIFT);}
 178 <BOTH,SCRIPT,EXPRESSION>">>"    { RTOKEN(RSHIFT);}
 179 <BOTH,SCRIPT,EXPRESSION>"+="    { RTOKEN(PLUSEQ);}
 180 <BOTH,SCRIPT,EXPRESSION>"-="    { RTOKEN(MINUSEQ);}
 181 <BOTH,SCRIPT,EXPRESSION>"*="    { RTOKEN(MULTEQ);}
 182 <BOTH,SCRIPT,EXPRESSION>"/="    { RTOKEN(DIVEQ);}
 183 <BOTH,SCRIPT,EXPRESSION>"&="    { RTOKEN(ANDEQ);}
 184 <BOTH,SCRIPT,EXPRESSION>"|="    { RTOKEN(OREQ);}
 185 <BOTH,SCRIPT,EXPRESSION>"&&"    { RTOKEN(ANDAND);}
 186 <BOTH,SCRIPT,EXPRESSION>">"             { RTOKEN('>');}
 187 <BOTH,SCRIPT,EXPRESSION>","             { RTOKEN(',');}
 188 <BOTH,SCRIPT,EXPRESSION>"&"             { RTOKEN('&');}
 189 <BOTH,SCRIPT,EXPRESSION>"|"             { RTOKEN('|');}
 190 <BOTH,SCRIPT,EXPRESSION>"~"             { RTOKEN('~');}
 191 <BOTH,SCRIPT,EXPRESSION>"!"             { RTOKEN('!');}
 192 <BOTH,SCRIPT,EXPRESSION>"?"             { RTOKEN('?');}
 193 <BOTH,SCRIPT,EXPRESSION>"*"             { RTOKEN('*');}
 194 <BOTH,SCRIPT,EXPRESSION>"+"             { RTOKEN('+');}
 195 <BOTH,SCRIPT,EXPRESSION>"-"             { RTOKEN('-');}
 196 <BOTH,SCRIPT,EXPRESSION>"/"             { RTOKEN('/');}
 197 <BOTH,SCRIPT,EXPRESSION>"%"             { RTOKEN('%');}
 198 <BOTH,SCRIPT,EXPRESSION>"<"             { RTOKEN('<');}
 199 <BOTH,SCRIPT,EXPRESSION>">"             { RTOKEN('>');}
 200 <BOTH,SCRIPT,EXPRESSION>"="          { RTOKEN('=');}
 201 <BOTH,SCRIPT,EXPRESSION>"}"                     { RTOKEN('}') ; }
 202 <BOTH,SCRIPT,EXPRESSION>"{"                     { RTOKEN('{'); }
 203 <BOTH,SCRIPT,EXPRESSION>")"                     { RTOKEN(')');}
 204 <BOTH,SCRIPT,EXPRESSION>"("                     { RTOKEN('(');}
 205 <BOTH,SCRIPT,EXPRESSION>"]"             { RTOKEN(']');}
 206 <BOTH,SCRIPT,EXPRESSION>"["             { RTOKEN('[');}
 207 <BOTH,SCRIPT,EXPRESSION>":"             { RTOKEN(':'); }
 208 <BOTH,SCRIPT,EXPRESSION>";"             { RTOKEN(';');}
 209 <BOTH,SCRIPT,EXPRESSION>"-"             { RTOKEN('-');}
 210 <BOTH,SCRIPT,EXPRESSION>"/"             { RTOKEN('/');}
 211 <BOTH,SCRIPT>"MEMORY"           { RTOKEN(MEMORY);}
 212 <BOTH,SCRIPT>"ORIGIN"           { RTOKEN(ORIGIN);}
 213 <BOTH,SCRIPT>"BLOCK"                    { RTOKEN(BLOCK);}
 214 <BOTH,SCRIPT>"LENGTH"           { RTOKEN(LENGTH);}
 215 <EXPRESSION,BOTH,SCRIPT>"ALIGN"                 { RTOKEN(ALIGN_K);}
 216 <EXPRESSION,BOTH,SCRIPT>"ADDR"                  { RTOKEN(ADDR);}
 217 <BOTH,SCRIPT>"ENTRY"                    { RTOKEN(ENTRY);}
 218 <EXPRESSION,BOTH,SCRIPT>"NEXT"                  { RTOKEN(NEXT);}
 219 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers"        { RTOKEN(SIZEOF_HEADERS);}
 220 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS"        { RTOKEN(SIZEOF_HEADERS);}
 221 <BOTH,SCRIPT>"MAP"                      { RTOKEN(MAP);}
 222 <EXPRESSION,BOTH,SCRIPT>"SIZEOF"                { RTOKEN(SIZEOF);}
 223 <BOTH,SCRIPT>"TARGET"           { RTOKEN(TARGET_K);}
 224 <BOTH,SCRIPT>"SEARCH_DIR"               { RTOKEN(SEARCH_DIR);}
 225 <BOTH,SCRIPT>"OUTPUT"           { RTOKEN(OUTPUT);}
 226 <BOTH,SCRIPT>"INPUT"                    { RTOKEN(INPUT);}
 227 <BOTH,SCRIPT>"DEFINED"          { RTOKEN(DEFINED);}
 228 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS"    { RTOKEN(CREATE_OBJECT_SYMBOLS);}
 229 <BOTH,SCRIPT>"CONSTRUCTORS"             { RTOKEN( CONSTRUCTORS);}
 230 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);}
 231 <BOTH,SCRIPT>"SECTIONS"         { RTOKEN(SECTIONS);}
 232 <BOTH,SCRIPT>"FILL"                     { RTOKEN(FILL);}
 233 <BOTH,SCRIPT>"STARTUP"          { RTOKEN(STARTUP);}
 234 <BOTH,SCRIPT>"OUTPUT_FORMAT"            { RTOKEN(OUTPUT_FORMAT);}
 235 <BOTH,SCRIPT>"OUTPUT_ARCH"              { RTOKEN( OUTPUT_ARCH);}
 236 <BOTH,SCRIPT>"HLL"                      { RTOKEN(HLL);}
 237 <BOTH,SCRIPT>"SYSLIB"           { RTOKEN(SYSLIB);}
 238 <BOTH,SCRIPT>"FLOAT"                    { RTOKEN(FLOAT);}
 239 <BOTH,SCRIPT>"LONG"                     { RTOKEN( LONG);}
 240 <BOTH,SCRIPT>"SHORT"                    { RTOKEN( SHORT);}
 241 <BOTH,SCRIPT>"BYTE"                     { RTOKEN( BYTE);}
 242 <BOTH,SCRIPT>"NOFLOAT"          { RTOKEN(NOFLOAT);}
 243 <BOTH,SCRIPT>"NOLOAD"           { RTOKEN(NOLOAD);}
 244 <BOTH,SCRIPT>"DSECT"                    { RTOKEN(DSECT);}
 245 <BOTH,SCRIPT>"COPY"                     { RTOKEN(COPY);}
 246 <BOTH,SCRIPT>"INFO"                     { RTOKEN(INFO);}
 247 <BOTH,SCRIPT>"OVERLAY"          { RTOKEN(OVERLAY);}
 248 <BOTH,SCRIPT>"o"                        { RTOKEN(ORIGIN);}
 249 <BOTH,SCRIPT>"org"                      { RTOKEN(ORIGIN);}
 250 <BOTH,SCRIPT>"l"                        { RTOKEN( LENGTH);}
 251 <BOTH,SCRIPT>"len"                      { RTOKEN( LENGTH);}
 252
 253 <BOTH,EXPRESSION>{FILENAMECHAR1}{FILENAMECHAR}* {
 254                                  yylval.name = buystring(yytext);
 255                                   return NAME;
 256                                 }
 257 <SCRIPT,COMMAND>{FILENAMECHAR}* { yylval.name = buystring(yytext);
 258                                   return NAME;
 259                                 }
 260
 261 <EXPRESSION,BOTH,COMMAND,SCRIPT>"\""[^\"]*"\"" {
 262                                         /* No matter the state, quotes
 263                                            give what's inside */
 264                                         yylval.name = buystring(yytext+1);
 265                                         yylval.name[yyleng-2] = 0;
 266                                         return NAME;
 267                                 }
 268 <BOTH,SCRIPT,EXPRESSION>"\n"            { lineno++;}
 269 <COMMAND,BOTH,SCRIPT,EXPRESSION>[ \t]
 270
 271 "/*"                            { old = INITIAL; BEGIN(COMMENT); }
 272 <COMMAND>"/*"                   { old = COMMAND; BEGIN(COMMENT); }
 273 <BOTH>"/*"                      { old =BOTH; BEGIN(COMMENT); }
 274 <SCRIPT>"/*"                    { old = EXPRESSION; BEGIN(COMMENT); }
 275 <EXPRESSION>"/*"                { old = SCRIPT; BEGIN(COMMENT); }
 276 "/*"                            { old = INITIAL; BEGIN(COMMENT); }
 277 <COMMENT>[^*\\n]*
 278 <COMMENT>"*"+[^*/\\n]*
 279 <COMMENT>\\n                    { ++lineno;}
 280 <COMMENT>"*"+"/"                { BEGIN(old); }
 281
 282 <<EOF>> {
 283     include_stack_ptr--;
 284
 285     if (include_stack_ptr == 0)
 286     {
 287       yyterminate();
 288     }
 289     else
 290     {
 291       yy_switch_to_buffer(include_stack[include_stack_ptr]);
 292     }
 293         BEGIN(COMMAND);
 294         return END;
 295   }
 296
 297
 298
 299
 300
 301
 302
 303
 304 %%
 305
 306 void
 307 DEFUN(lex_push_file,(file),
 308      FILE *file)
 309 {
 310   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
 311   {
 312     einfo("%F:includes nested too deeply");
 313   }
 314   include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
 315   yyin = file;
 316   yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
 317
 318   BEGIN(SCRIPT);
 319 }
 320
 321 YY_BUFFER_STATE
 322 DEFUN(yy_create_string_buffer,(string,  size),
 323       CONST char *string AND
 324       int size )
 325 {
 326   YY_BUFFER_STATE b;
 327
 328   b = (YY_BUFFER_STATE) malloc( sizeof( struct yy_buffer_state ) );
 329   b->yy_input_file = 0;
 330
 331   if ( ! b )
 332    YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 333
 334   b->yy_buf_size = size;
 335
 336   /* yy_ch_buf has to be 2 characters longer than the size given because
 337    * we need to put in 2 end-of-buffer characters.
 338    */
 339   b->yy_ch_buf = (YY_CHAR *) malloc( (unsigned) (b->yy_buf_size + 3) );
 340
 341   if ( ! b->yy_ch_buf )
 342    YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 343
 344
 345   b->yy_ch_buf[0] = '\n';
 346   strcpy(b->yy_ch_buf+1,  string);
 347   b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR;
 348   b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR;
 349     b->yy_n_chars = size+1;
 350   b->yy_buf_pos = &b->yy_ch_buf[1];
 351
 352   b->yy_eof_status = EOF_NOT_SEEN;
 353
 354   return ( b );
 355 }
 356
 357
 358
 359 void
 360 DEFUN(lex_redirect,( string),
 361     CONST  char *string)
 362 {
 363   YY_BUFFER_STATE tmp;
 364
 365   int len = strlen(string);
 366 yy_init = 0  ;
 367   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
 368   {
 369     einfo("%F: macros nested too deeply");
 370   }
 371   include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
 372
 373   tmp =   yy_create_string_buffer(string, len);
 374
 375   yy_switch_to_buffer(tmp);
 376   BEGIN(COMMAND);
 377 yyout = stdout;
 378 }
 379
 380 int state_stack[20];
 381 int *state_stack_p = state_stack;
 382
 383 void
 384 DEFUN_VOID(ldlex_script)
 385 {
 386 *(state_stack_p)++ = yy_start;
 387
 388 BEGIN(SCRIPT);
 389 }
 390
 391
 392 void
 393 DEFUN_VOID(ldlex_expression)
 394 {
 395 *(state_stack_p)++ = yy_start;
 396 BEGIN(EXPRESSION);
 397
 398 }
 399 void
 400 DEFUN_VOID(ldlex_both)
 401 {
 402 *(state_stack_p)++ = yy_start;
 403 BEGIN(BOTH);
 404 }
 405 void
 406 DEFUN_VOID(ldlex_command)
 407 {
 408 *(state_stack_p)++ = yy_start;
 409 BEGIN(COMMAND);
 410 }
 411
 412 void
 413 DEFUN_VOID(ldlex_popstate)
 414 {
 415 yy_start = *(--state_stack_p);
 416 }
 417
 418 yy_input(buf, result, max_size)
 419 char *buf;
 420 int *result;
 421 int max_size;
 422 {
 423   *result = 0;
 424   if (yy_current_buffer->yy_input_file)
 425   {
 426     if (yyin)
 427      if ( (*result = read( fileno(yyin), (char *) buf, max_size )) < 0 )
 428       YY_FATAL_ERROR( "read() in flex scanner failed" );
 429   }
 430 }
 431