bfd/
[binutils.git] / ld / ldlex.l
blob48309027dbd975bc09487a14856e30034f60274b
1 %{
3 /* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4    2000, 2001, 2002, 2003, 2004, 2005, 2007, 2009
5    Free Software Foundation, Inc.
6    Written by Steve Chamberlain of Cygnus Support.
8    This file is part of the GNU Binutils.
10    This program is free software; you can redistribute it and/or modify
11    it under the terms of the GNU General Public License as published by
12    the Free Software Foundation; either version 3 of the License, or
13    (at your option) any later version.
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License for more details.
20    You should have received a copy of the GNU General Public License
21    along with this program; if not, write to the Free Software
22    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23    MA 02110-1301, USA.  */
25 #include "sysdep.h"
26 #include "bfd.h"
27 #include "safe-ctype.h"
28 #include "bfdlink.h"
29 #include "ld.h"
30 #include "ldmisc.h"
31 #include "ldexp.h"
32 #include "ldlang.h"
33 #include <ldgram.h>
34 #include "ldfile.h"
35 #include "ldlex.h"
36 #include "ldmain.h"
37 #include "libiberty.h"
39 /* The type of top-level parser input.
40    yylex and yyparse (indirectly) both check this.  */
41 input_type parser_input;
43 /* Line number in the current input file.
44    (FIXME Actually, it doesn't appear to get reset for each file?)  */
45 unsigned int lineno = 1;
47 /* The string we are currently lexing, or NULL if we are reading a
48    file.  */
49 const char *lex_string = NULL;
51 /* Support for flex reading from more than one input file (stream).
52    `include_stack' is flex's input state for each open file;
53    `file_name_stack' is the file names.  `lineno_stack' is the current
54    line numbers.
56    If `include_stack_ptr' is 0, we haven't started reading anything yet.
57    Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid.  */
59 #undef YY_INPUT
60 #define YY_INPUT(buf,result,max_size) yy_input (buf, &result, max_size)
62 #define YY_NO_UNPUT
64 #define MAX_INCLUDE_DEPTH 10
65 static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
66 static const char *file_name_stack[MAX_INCLUDE_DEPTH];
67 static unsigned int lineno_stack[MAX_INCLUDE_DEPTH];
68 static unsigned int include_stack_ptr = 0;
69 static int vers_node_nesting = 0;
71 static void yy_input (char *, int *, int);
72 static void comment (void);
73 static void lex_warn_invalid (char *where, char *what);
75 /* STATES
76         EXPRESSION      definitely in an expression
77         SCRIPT          definitely in a script
78         BOTH            either EXPRESSION or SCRIPT
79         DEFSYMEXP       in an argument to -defsym
80         MRI             in an MRI script
81         VERS_START      starting a Sun style mapfile
82         VERS_SCRIPT     a Sun style mapfile
83         VERS_NODE       a node within a Sun style mapfile
85 #define RTOKEN(x)  {  yylval.token = x; return x; }
87 /* Some versions of flex want this.  */
88 #ifndef yywrap
89 int yywrap (void) { return 1; }
90 #endif
93 %a 4000
94 %o 5000
96 CMDFILENAMECHAR   [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~]
97 CMDFILENAMECHAR1  [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~]
98 FILENAMECHAR1   [_a-zA-Z\/\.\\\$\_\~]
99 SYMBOLCHARN     [_a-zA-Z\/\.\\\$\_\~0-9]
100 FILENAMECHAR    [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~]
101 WILDCHAR        [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*]
102 WHITE           [ \t\n\r]+
104 NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~]
106 V_TAG [.$_a-zA-Z][._a-zA-Z0-9]*
107 V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
109 %s SCRIPT
110 %s EXPRESSION
111 %s BOTH
112 %s DEFSYMEXP
113 %s MRI
114 %s VERS_START
115 %s VERS_SCRIPT
116 %s VERS_NODE
119   if (parser_input != input_selected)
120     {
121       /* The first token of the input determines the initial parser state.  */
122       input_type t = parser_input;
123       parser_input = input_selected;
124       switch (t)
125         {
126         case input_script: return INPUT_SCRIPT; break;
127         case input_mri_script: return INPUT_MRI_SCRIPT; break;
128         case input_version_script: return INPUT_VERSION_SCRIPT; break;
129         case input_dynamic_list: return INPUT_DYNAMIC_LIST; break;
130         case input_defsym: return INPUT_DEFSYM; break;
131         default: abort ();
132         }
133     }
135 <BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT>"/*"   { comment (); }
138 <DEFSYMEXP>"-"                  { RTOKEN('-');}
139 <DEFSYMEXP>"+"                  { RTOKEN('+');}
140 <DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}*   { yylval.name = xstrdup (yytext); return NAME; }
141 <DEFSYMEXP>"="                  { RTOKEN('='); }
143 <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {
144                                 yylval.integer = bfd_scan_vma (yytext + 1, 0, 16);
145                                 yylval.bigint.str = NULL;
146                                 return INT;
147                         }
149 <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) {
150                                    int ibase ;
151                                    switch (yytext[yyleng - 1]) {
152                                     case 'X':
153                                     case 'x':
154                                     case 'H':
155                                     case 'h':
156                                      ibase = 16;
157                                      break;
158                                     case 'O':
159                                     case 'o':
160                                      ibase = 8;
161                                      break;
162                                     case 'B':
163                                     case 'b':
164                                      ibase = 2;
165                                      break;
166                                     default:
167                                      ibase = 10;
168                                    }
169                                    yylval.integer = bfd_scan_vma (yytext, 0,
170                                                                   ibase);
171                                    yylval.bigint.str = NULL;
172                                    return INT;
173                                  }
174 <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? {
175                                   char *s = yytext;
176                                   int ibase = 0;
178                                   if (*s == '$')
179                                     {
180                                       ++s;
181                                       ibase = 16;
182                                     }
183                                   yylval.integer = bfd_scan_vma (s, 0, ibase);
184                                   yylval.bigint.str = NULL;
185                                   if (yytext[yyleng - 1] == 'M'
186                                       || yytext[yyleng - 1] == 'm')
187                                     {
188                                       yylval.integer *= 1024 * 1024;
189                                     }
190                                   else if (yytext[yyleng - 1] == 'K'
191                                       || yytext[yyleng - 1]=='k')
192                                     {
193                                       yylval.integer *= 1024;
194                                     }
195                                   else if (yytext[0] == '0'
196                                            && (yytext[1] == 'x'
197                                                || yytext[1] == 'X'))
198                                     {
199                                       yylval.bigint.str = xstrdup (yytext + 2);
200                                     }
201                                   return INT;
202                                 }
203 <BOTH,SCRIPT,EXPRESSION,MRI>"]"         { RTOKEN(']');}
204 <BOTH,SCRIPT,EXPRESSION,MRI>"["         { RTOKEN('[');}
205 <BOTH,SCRIPT,EXPRESSION,MRI>"<<="       { RTOKEN(LSHIFTEQ);}
206 <BOTH,SCRIPT,EXPRESSION,MRI>">>="       { RTOKEN(RSHIFTEQ);}
207 <BOTH,SCRIPT,EXPRESSION,MRI>"||"        { RTOKEN(OROR);}
208 <BOTH,SCRIPT,EXPRESSION,MRI>"=="        { RTOKEN(EQ);}
209 <BOTH,SCRIPT,EXPRESSION,MRI>"!="        { RTOKEN(NE);}
210 <BOTH,SCRIPT,EXPRESSION,MRI>">="        { RTOKEN(GE);}
211 <BOTH,SCRIPT,EXPRESSION,MRI>"<="        { RTOKEN(LE);}
212 <BOTH,SCRIPT,EXPRESSION,MRI>"<<"        { RTOKEN(LSHIFT);}
213 <BOTH,SCRIPT,EXPRESSION,MRI>">>"        { RTOKEN(RSHIFT);}
214 <BOTH,SCRIPT,EXPRESSION,MRI>"+="        { RTOKEN(PLUSEQ);}
215 <BOTH,SCRIPT,EXPRESSION,MRI>"-="        { RTOKEN(MINUSEQ);}
216 <BOTH,SCRIPT,EXPRESSION,MRI>"*="        { RTOKEN(MULTEQ);}
217 <BOTH,SCRIPT,EXPRESSION,MRI>"/="        { RTOKEN(DIVEQ);}
218 <BOTH,SCRIPT,EXPRESSION,MRI>"&="        { RTOKEN(ANDEQ);}
219 <BOTH,SCRIPT,EXPRESSION,MRI>"|="        { RTOKEN(OREQ);}
220 <BOTH,SCRIPT,EXPRESSION,MRI>"&&"        { RTOKEN(ANDAND);}
221 <BOTH,SCRIPT,EXPRESSION,MRI>">"         { RTOKEN('>');}
222 <BOTH,SCRIPT,EXPRESSION,MRI>","         { RTOKEN(',');}
223 <BOTH,SCRIPT,EXPRESSION,MRI>"&"         { RTOKEN('&');}
224 <BOTH,SCRIPT,EXPRESSION,MRI>"|"         { RTOKEN('|');}
225 <BOTH,SCRIPT,EXPRESSION,MRI>"~"         { RTOKEN('~');}
226 <BOTH,SCRIPT,EXPRESSION,MRI>"!"         { RTOKEN('!');}
227 <BOTH,SCRIPT,EXPRESSION,MRI>"?"         { RTOKEN('?');}
228 <BOTH,SCRIPT,EXPRESSION,MRI>"*"         { RTOKEN('*');}
229 <BOTH,SCRIPT,EXPRESSION,MRI>"+"         { RTOKEN('+');}
230 <BOTH,SCRIPT,EXPRESSION,MRI>"-"         { RTOKEN('-');}
231 <BOTH,SCRIPT,EXPRESSION,MRI>"/"         { RTOKEN('/');}
232 <BOTH,SCRIPT,EXPRESSION,MRI>"%"         { RTOKEN('%');}
233 <BOTH,SCRIPT,EXPRESSION,MRI>"<"         { RTOKEN('<');}
234 <BOTH,SCRIPT,EXPRESSION,MRI>"="         { RTOKEN('=');}
235 <BOTH,SCRIPT,EXPRESSION,MRI>"}"         { RTOKEN('}') ; }
236 <BOTH,SCRIPT,EXPRESSION,MRI>"{"         { RTOKEN('{'); }
237 <BOTH,SCRIPT,EXPRESSION,MRI>")"         { RTOKEN(')');}
238 <BOTH,SCRIPT,EXPRESSION,MRI>"("         { RTOKEN('(');}
239 <BOTH,SCRIPT,EXPRESSION,MRI>":"         { RTOKEN(':'); }
240 <BOTH,SCRIPT,EXPRESSION,MRI>";"         { RTOKEN(';');}
241 <BOTH,SCRIPT>"MEMORY"                   { RTOKEN(MEMORY);}
242 <BOTH,SCRIPT>"REGION_ALIAS"             { RTOKEN(REGION_ALIAS);}
243 <BOTH,SCRIPT,EXPRESSION>"ORIGIN"        { RTOKEN(ORIGIN);}
244 <BOTH,SCRIPT>"VERSION"                  { RTOKEN(VERSIONK);}
245 <EXPRESSION,BOTH,SCRIPT>"BLOCK"         { RTOKEN(BLOCK);}
246 <EXPRESSION,BOTH,SCRIPT>"BIND"          { RTOKEN(BIND);}
247 <BOTH,SCRIPT,EXPRESSION>"LENGTH"        { RTOKEN(LENGTH);}
248 <EXPRESSION,BOTH,SCRIPT>"ALIGN"         { RTOKEN(ALIGN_K);}
249 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN"    { RTOKEN(DATA_SEGMENT_ALIGN);}
250 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_RELRO_END"        { RTOKEN(DATA_SEGMENT_RELRO_END);}
251 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END"      { RTOKEN(DATA_SEGMENT_END);}
252 <EXPRESSION,BOTH,SCRIPT>"ADDR"          { RTOKEN(ADDR);}
253 <EXPRESSION,BOTH,SCRIPT>"LOADADDR"      { RTOKEN(LOADADDR);}
254 <EXPRESSION,BOTH,SCRIPT>"ALIGNOF"       { RTOKEN(ALIGNOF); }
255 <EXPRESSION,BOTH>"MAX"                  { RTOKEN(MAX_K); }
256 <EXPRESSION,BOTH>"MIN"                  { RTOKEN(MIN_K); }
257 <EXPRESSION,BOTH,SCRIPT>"ASSERT"        { RTOKEN(ASSERT_K); }
258 <BOTH,SCRIPT>"ENTRY"                    { RTOKEN(ENTRY);}
259 <BOTH,SCRIPT,MRI>"EXTERN"               { RTOKEN(EXTERN);}
260 <EXPRESSION,BOTH,SCRIPT>"NEXT"          { RTOKEN(NEXT);}
261 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers"        { RTOKEN(SIZEOF_HEADERS);}
262 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS"        { RTOKEN(SIZEOF_HEADERS);}
263 <EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);}
264 <BOTH,SCRIPT>"MAP"                      { RTOKEN(MAP);}
265 <EXPRESSION,BOTH,SCRIPT>"SIZEOF"        { RTOKEN(SIZEOF);}
266 <BOTH,SCRIPT>"TARGET"                   { RTOKEN(TARGET_K);}
267 <BOTH,SCRIPT>"SEARCH_DIR"               { RTOKEN(SEARCH_DIR);}
268 <BOTH,SCRIPT>"OUTPUT"                   { RTOKEN(OUTPUT);}
269 <BOTH,SCRIPT>"INPUT"                    { RTOKEN(INPUT);}
270 <EXPRESSION,BOTH,SCRIPT>"GROUP"         { RTOKEN(GROUP);}
271 <EXPRESSION,BOTH,SCRIPT>"AS_NEEDED"     { RTOKEN(AS_NEEDED);}
272 <EXPRESSION,BOTH,SCRIPT>"DEFINED"       { RTOKEN(DEFINED);}
273 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS"    { RTOKEN(CREATE_OBJECT_SYMBOLS);}
274 <BOTH,SCRIPT>"CONSTRUCTORS"             { RTOKEN( CONSTRUCTORS);}
275 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION"  { RTOKEN(FORCE_COMMON_ALLOCATION);}
276 <BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);}
277 <BOTH,SCRIPT>"SECTIONS"                 { RTOKEN(SECTIONS);}
278 <BOTH,SCRIPT>"INSERT"                   { RTOKEN(INSERT_K);}
279 <BOTH,SCRIPT>"AFTER"                    { RTOKEN(AFTER);}
280 <BOTH,SCRIPT>"BEFORE"                   { RTOKEN(BEFORE);}
281 <BOTH,SCRIPT>"FILL"                     { RTOKEN(FILL);}
282 <BOTH,SCRIPT>"STARTUP"                  { RTOKEN(STARTUP);}
283 <BOTH,SCRIPT>"OUTPUT_FORMAT"            { RTOKEN(OUTPUT_FORMAT);}
284 <BOTH,SCRIPT>"OUTPUT_ARCH"              { RTOKEN( OUTPUT_ARCH);}
285 <BOTH,SCRIPT>"HLL"                      { RTOKEN(HLL);}
286 <BOTH,SCRIPT>"SYSLIB"                   { RTOKEN(SYSLIB);}
287 <BOTH,SCRIPT>"FLOAT"                    { RTOKEN(FLOAT);}
288 <BOTH,SCRIPT>"QUAD"                     { RTOKEN( QUAD);}
289 <BOTH,SCRIPT>"SQUAD"                    { RTOKEN( SQUAD);}
290 <BOTH,SCRIPT>"LONG"                     { RTOKEN( LONG);}
291 <BOTH,SCRIPT>"SHORT"                    { RTOKEN( SHORT);}
292 <BOTH,SCRIPT>"BYTE"                     { RTOKEN( BYTE);}
293 <BOTH,SCRIPT>"NOFLOAT"                  { RTOKEN(NOFLOAT);}
294 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS"   { RTOKEN(NOCROSSREFS);}
295 <BOTH,SCRIPT>"OVERLAY"                  { RTOKEN(OVERLAY); }
296 <BOTH,SCRIPT>"SORT_BY_NAME"             { RTOKEN(SORT_BY_NAME); }
297 <BOTH,SCRIPT>"SORT_BY_ALIGNMENT"        { RTOKEN(SORT_BY_ALIGNMENT); }
298 <BOTH,SCRIPT>"SORT"                     { RTOKEN(SORT_BY_NAME); }
299 <EXPRESSION,BOTH,SCRIPT>"NOLOAD"        { RTOKEN(NOLOAD);}
300 <EXPRESSION,BOTH,SCRIPT>"DSECT"         { RTOKEN(DSECT);}
301 <EXPRESSION,BOTH,SCRIPT>"COPY"          { RTOKEN(COPY);}
302 <EXPRESSION,BOTH,SCRIPT>"INFO"          { RTOKEN(INFO);}
303 <EXPRESSION,BOTH,SCRIPT>"OVERLAY"       { RTOKEN(OVERLAY);}
304 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RO"    { RTOKEN(ONLY_IF_RO); }
305 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RW"    { RTOKEN(ONLY_IF_RW); }
306 <EXPRESSION,BOTH,SCRIPT>"SPECIAL"       { RTOKEN(SPECIAL); }
307 <BOTH,SCRIPT>"o"                        { RTOKEN(ORIGIN);}
308 <BOTH,SCRIPT>"org"                      { RTOKEN(ORIGIN);}
309 <BOTH,SCRIPT>"l"                        { RTOKEN( LENGTH);}
310 <BOTH,SCRIPT>"len"                      { RTOKEN( LENGTH);}
311 <EXPRESSION,BOTH,SCRIPT>"INCLUDE"       { RTOKEN(INCLUDE);}
312 <BOTH,SCRIPT>"PHDRS"                    { RTOKEN (PHDRS); }
313 <EXPRESSION,BOTH,SCRIPT>"AT"            { RTOKEN(AT);}
314 <EXPRESSION,BOTH,SCRIPT>"SUBALIGN"      { RTOKEN(SUBALIGN);}
315 <EXPRESSION,BOTH,SCRIPT>"PROVIDE"       { RTOKEN(PROVIDE); }
316 <EXPRESSION,BOTH,SCRIPT>"PROVIDE_HIDDEN" { RTOKEN(PROVIDE_HIDDEN); }
317 <EXPRESSION,BOTH,SCRIPT>"KEEP"          { RTOKEN(KEEP); }
318 <EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE"  { RTOKEN(EXCLUDE_FILE); }
319 <EXPRESSION,BOTH,SCRIPT>"CONSTANT"      { RTOKEN(CONSTANT);}
320 <MRI>"#".*\n?                   { ++ lineno; }
321 <MRI>"\n"                       { ++ lineno;  RTOKEN(NEWLINE); }
322 <MRI>"*".*                      { /* Mri comment line */ }
323 <MRI>";".*                      { /* Mri comment line */ }
324 <MRI>"END"                      { RTOKEN(ENDWORD); }
325 <MRI>"ALIGNMOD"                 { RTOKEN(ALIGNMOD);}
326 <MRI>"ALIGN"                    { RTOKEN(ALIGN_K);}
327 <MRI>"CHIP"                     { RTOKEN(CHIP); }
328 <MRI>"BASE"                     { RTOKEN(BASE); }
329 <MRI>"ALIAS"                    { RTOKEN(ALIAS); }
330 <MRI>"TRUNCATE"                 { RTOKEN(TRUNCATE); }
331 <MRI>"LOAD"                     { RTOKEN(LOAD); }
332 <MRI>"PUBLIC"                   { RTOKEN(PUBLIC); }
333 <MRI>"ORDER"                    { RTOKEN(ORDER); }
334 <MRI>"NAME"                     { RTOKEN(NAMEWORD); }
335 <MRI>"FORMAT"                   { RTOKEN(FORMAT); }
336 <MRI>"CASE"                     { RTOKEN(CASE); }
337 <MRI>"START"                    { RTOKEN(START); }
338 <MRI>"LIST".*                   { RTOKEN(LIST); /* LIST and ignore to end of line */ }
339 <MRI>"SECT"                     { RTOKEN(SECT); }
340 <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE"                  { RTOKEN(ABSOLUTE); }
341 <MRI>"end"                      { RTOKEN(ENDWORD); }
342 <MRI>"alignmod"                 { RTOKEN(ALIGNMOD);}
343 <MRI>"align"                    { RTOKEN(ALIGN_K);}
344 <MRI>"chip"                     { RTOKEN(CHIP); }
345 <MRI>"base"                     { RTOKEN(BASE); }
346 <MRI>"alias"                    { RTOKEN(ALIAS); }
347 <MRI>"truncate"                 { RTOKEN(TRUNCATE); }
348 <MRI>"load"                     { RTOKEN(LOAD); }
349 <MRI>"public"                   { RTOKEN(PUBLIC); }
350 <MRI>"order"                    { RTOKEN(ORDER); }
351 <MRI>"name"                     { RTOKEN(NAMEWORD); }
352 <MRI>"format"                   { RTOKEN(FORMAT); }
353 <MRI>"case"                     { RTOKEN(CASE); }
354 <MRI>"extern"                   { RTOKEN(EXTERN); }
355 <MRI>"start"                    { RTOKEN(START); }
356 <MRI>"list".*                   { RTOKEN(LIST); /* LIST and ignore to end of line */ }
357 <MRI>"sect"                     { RTOKEN(SECT); }
358 <EXPRESSION,BOTH,SCRIPT,MRI>"absolute"                  { RTOKEN(ABSOLUTE); }
360 <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}*  {
361 /* Filename without commas, needed to parse mri stuff */
362                                  yylval.name = xstrdup (yytext);
363                                   return NAME;
364                                 }
367 <BOTH>{FILENAMECHAR1}{FILENAMECHAR}*    {
368                                  yylval.name = xstrdup (yytext);
369                                   return NAME;
370                                 }
371 <BOTH>"-l"{FILENAMECHAR}+ {
372                                   yylval.name = xstrdup (yytext + 2);
373                                   return LNAME;
374                                 }
375 <EXPRESSION>{FILENAMECHAR1}{NOCFILENAMECHAR}*   {
376                                  yylval.name = xstrdup (yytext);
377                                   return NAME;
378                                 }
379 <EXPRESSION>"-l"{NOCFILENAMECHAR}+ {
380                                   yylval.name = xstrdup (yytext + 2);
381                                   return LNAME;
382                                 }
383 <SCRIPT>{WILDCHAR}* {
384                 /* Annoyingly, this pattern can match comments, and we have
385                    longest match issues to consider.  So if the first two
386                    characters are a comment opening, put the input back and
387                    try again.  */
388                 if (yytext[0] == '/' && yytext[1] == '*')
389                   {
390                     yyless (2);
391                     comment ();
392                   }
393                 else
394                   {
395                     yylval.name = xstrdup (yytext);
396                     return NAME;
397                   }
398         }
400 <EXPRESSION,BOTH,SCRIPT,VERS_NODE>"\""[^\"]*"\"" {
401                                         /* No matter the state, quotes
402                                            give what's inside */
403                                         yylval.name = xstrdup (yytext + 1);
404                                         yylval.name[yyleng - 2] = 0;
405                                         return NAME;
406                                 }
407 <BOTH,SCRIPT,EXPRESSION>"\n"            { lineno++;}
408 <MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+    { }
410 <VERS_NODE,VERS_SCRIPT>[:,;]    { return *yytext; }
412 <VERS_NODE>global               { RTOKEN(GLOBAL); }
414 <VERS_NODE>local                { RTOKEN(LOCAL); }
416 <VERS_NODE>extern               { RTOKEN(EXTERN); }
418 <VERS_NODE>{V_IDENTIFIER}       { yylval.name = xstrdup (yytext);
419                                   return VERS_IDENTIFIER; }
421 <VERS_SCRIPT>{V_TAG}            { yylval.name = xstrdup (yytext);
422                                   return VERS_TAG; }
424 <VERS_START>"{"                 { BEGIN(VERS_SCRIPT); return *yytext; }
426 <VERS_SCRIPT>"{"                { BEGIN(VERS_NODE);
427                                   vers_node_nesting = 0;
428                                   return *yytext;
429                                 }
430 <VERS_SCRIPT>"}"                { return *yytext; }
431 <VERS_NODE>"{"                  { vers_node_nesting++; return *yytext; }
432 <VERS_NODE>"}"                  { if (--vers_node_nesting < 0)
433                                     BEGIN(VERS_SCRIPT);
434                                   return *yytext;
435                                 }
437 <VERS_START,VERS_NODE,VERS_SCRIPT>[\n]          { lineno++; }
439 <VERS_START,VERS_NODE,VERS_SCRIPT>#.*           { /* Eat up comments */ }
441 <VERS_START,VERS_NODE,VERS_SCRIPT>[ \t\r]+      { /* Eat up whitespace */ }
443 <<EOF>> {
444   include_stack_ptr--;
446   if (include_stack_ptr == 0)
447   {
448     yyterminate ();
449   }
450   else
451   {
452     yy_switch_to_buffer (include_stack[include_stack_ptr]);
453   }
455   ldfile_input_filename = file_name_stack[include_stack_ptr - 1];
456   lineno = lineno_stack[include_stack_ptr];
458   return END;
461 <SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>.  lex_warn_invalid (" in script", yytext);
462 <EXPRESSION,DEFSYMEXP,BOTH>.    lex_warn_invalid (" in expression", yytext);
467 /* Switch flex to reading script file NAME, open on FILE,
468    saving the current input info on the include stack.  */
470 void
471 lex_push_file (FILE *file, const char *name)
473   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
474     {
475       einfo ("%F:includes nested too deeply\n");
476     }
477   file_name_stack[include_stack_ptr] = name;
478   lineno_stack[include_stack_ptr] = lineno;
479   include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
481   include_stack_ptr++;
482   lineno = 1;
483   yyin = file;
484   yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE));
487 /* Return a newly created flex input buffer containing STRING,
488    which is SIZE bytes long.  */
490 static YY_BUFFER_STATE
491 yy_create_string_buffer (const char *string, size_t size)
493   YY_BUFFER_STATE b;
495   /* Calls to m-alloc get turned by sed into xm-alloc.  */
496   b = malloc (sizeof (struct yy_buffer_state));
497   b->yy_input_file = 0;
498   b->yy_buf_size = size;
500   /* yy_ch_buf has to be 2 characters longer than the size given because
501      we need to put in 2 end-of-buffer characters.  */
502   b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3));
504   b->yy_ch_buf[0] = '\n';
505   strcpy (b->yy_ch_buf+1, string);
506   b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR;
507   b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR;
508   b->yy_n_chars = size+1;
509   b->yy_buf_pos = &b->yy_ch_buf[1];
511   b->yy_is_our_buffer = 1;
512   b->yy_is_interactive = 0;
513   b->yy_at_bol = 1;
514   b->yy_fill_buffer = 0;
516   /* flex 2.4.7 changed the interface.  FIXME: We should not be using
517      a flex internal interface in the first place!  */
518 #ifdef YY_BUFFER_NEW
519   b->yy_buffer_status = YY_BUFFER_NEW;
520 #else
521   b->yy_eof_status = EOF_NOT_SEEN;
522 #endif
524   return b;
527 /* Switch flex to reading from STRING, saving the current input info
528    on the include stack.  */
530 void
531 lex_redirect (const char *string)
533   YY_BUFFER_STATE tmp;
535   yy_init = 0;
536   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
537     {
538       einfo("%F: macros nested too deeply\n");
539     }
540   file_name_stack[include_stack_ptr] = "redirect";
541   lineno_stack[include_stack_ptr] = lineno;
542   include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
543   include_stack_ptr++;
544   lineno = 1;
545   tmp = yy_create_string_buffer (string, strlen (string));
546   yy_switch_to_buffer (tmp);
549 /* Functions to switch to a different flex start condition,
550    saving the current start condition on `state_stack'.  */
552 static int state_stack[MAX_INCLUDE_DEPTH * 2];
553 static int *state_stack_p = state_stack;
555 void
556 ldlex_script (void)
558   *(state_stack_p)++ = yy_start;
559   BEGIN (SCRIPT);
562 void
563 ldlex_mri_script (void)
565   *(state_stack_p)++ = yy_start;
566   BEGIN (MRI);
569 void
570 ldlex_version_script (void)
572   *(state_stack_p)++ = yy_start;
573   BEGIN (VERS_START);
576 void
577 ldlex_version_file (void)
579   *(state_stack_p)++ = yy_start;
580   BEGIN (VERS_SCRIPT);
583 void
584 ldlex_defsym (void)
586   *(state_stack_p)++ = yy_start;
587   BEGIN (DEFSYMEXP);
590 void
591 ldlex_expression (void)
593   *(state_stack_p)++ = yy_start;
594   BEGIN (EXPRESSION);
597 void
598 ldlex_both (void)
600   *(state_stack_p)++ = yy_start;
601   BEGIN (BOTH);
604 void
605 ldlex_popstate (void)
607   yy_start = *(--state_stack_p);
611 /* Place up to MAX_SIZE characters in BUF and return in *RESULT
612    either the number of characters read, or 0 to indicate EOF.  */
614 static void
615 yy_input (char *buf, int *result, int max_size)
617   *result = 0;
618   if (YY_CURRENT_BUFFER->yy_input_file)
619     {
620       if (yyin)
621         {
622           *result = fread (buf, 1, max_size, yyin);
623           if (*result < max_size && ferror (yyin))
624             einfo ("%F%P: read in flex scanner failed\n");
625         }
626     }
629 /* Eat the rest of a C-style comment.  */
631 static void
632 comment (void)
634   int c;
636   while (1)
637   {
638     c = input();
639     while (c != '*' && c != EOF)
640     {
641       if (c == '\n')
642         lineno++;
643       c = input();
644     }
646     if (c == '*')
647     {
648       c = input();
649       while (c == '*')
650        c = input();
651       if (c == '/')
652        break;                   /* found the end */
653     }
655     if (c == '\n')
656       lineno++;
658     if (c == EOF)
659     {
660       einfo( "%F%P: EOF in comment\n");
661       break;
662     }
663   }
666 /* Warn the user about a garbage character WHAT in the input
667    in context WHERE.  */
669 static void
670 lex_warn_invalid (char *where, char *what)
672   char buf[5];
674   /* If we have found an input file whose format we do not recognize,
675      and we are therefore treating it as a linker script, and we find
676      an invalid character, then most likely this is a real object file
677      of some different format.  Treat it as such.  */
678   if (ldfile_assumed_script)
679     {
680       bfd_set_error (bfd_error_file_not_recognized);
681       einfo ("%F%s: file not recognized: %E\n", ldfile_input_filename);
682     }
684   if (! ISPRINT (*what))
685     {
686       sprintf (buf, "\\%03o", (unsigned int) *what);
687       what = buf;
688     }
690   einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where);