daily update
[binutils/dougsmingw.git] / ld / ldlex.l
blobe52d83b222387f7f97913c0433a06f7aeed3da2c
1 %option nounput
3 %{
5 /* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
6    2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
7    Free Software Foundation, Inc.
8    Written by Steve Chamberlain of Cygnus Support.
10    This file is part of the GNU Binutils.
12    This program is free software; you can redistribute it and/or modify
13    it under the terms of the GNU General Public License as published by
14    the Free Software Foundation; either version 3 of the License, or
15    (at your option) any later version.
17    This program is distributed in the hope that it will be useful,
18    but WITHOUT ANY WARRANTY; without even the implied warranty of
19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20    GNU General Public License for more details.
22    You should have received a copy of the GNU General Public License
23    along with this program; if not, write to the Free Software
24    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
25    MA 02110-1301, USA.  */
27 #include "bfd.h"
28 #include "safe-ctype.h"
29 #include "bfdlink.h"
30 #include "ld.h"
31 #include "ldmisc.h"
32 #include "ldexp.h"
33 #include "ldlang.h"
34 #include <ldgram.h>
35 #include "ldfile.h"
36 #include "ldlex.h"
37 #include "ldmain.h"
38 #include "libiberty.h"
40 /* The type of top-level parser input.
41    yylex and yyparse (indirectly) both check this.  */
42 input_type parser_input;
44 /* Line number in the current input file.
45    (FIXME Actually, it doesn't appear to get reset for each file?)  */
46 unsigned int lineno = 1;
48 /* The string we are currently lexing, or NULL if we are reading a
49    file.  */
50 const char *lex_string = NULL;
52 /* Support for flex reading from more than one input file (stream).
53    `include_stack' is flex's input state for each open file;
54    `file_name_stack' is the file names.  `lineno_stack' is the current
55    line numbers.
57    If `include_stack_ptr' is 0, we haven't started reading anything yet.
58    Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid.  */
60 #undef YY_INPUT
61 #define YY_INPUT(buf,result,max_size) result = yy_input (buf, max_size)
63 #define YY_NO_UNPUT
65 #define MAX_INCLUDE_DEPTH 10
66 static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
67 static const char *file_name_stack[MAX_INCLUDE_DEPTH];
68 static unsigned int lineno_stack[MAX_INCLUDE_DEPTH];
69 static unsigned int include_stack_ptr = 0;
70 static int vers_node_nesting = 0;
72 static int yy_input (char *, int);
73 static void comment (void);
74 static void lex_warn_invalid (char *where, char *what);
76 /* STATES
77         EXPRESSION      definitely in an expression
78         SCRIPT          definitely in a script
79         BOTH            either EXPRESSION or SCRIPT
80         DEFSYMEXP       in an argument to -defsym
81         MRI             in an MRI script
82         VERS_START      starting a Sun style mapfile
83         VERS_SCRIPT     a Sun style mapfile
84         VERS_NODE       a node within a Sun style mapfile
86 #define RTOKEN(x)  {  yylval.token = x; return x; }
88 /* Some versions of flex want this.  */
89 #ifndef yywrap
90 int yywrap (void) { return 1; }
91 #endif
94 %a 4000
95 %o 5000
97 CMDFILENAMECHAR   [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~]
98 CMDFILENAMECHAR1  [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~]
99 FILENAMECHAR1   [_a-zA-Z\/\.\\\$\_\~]
100 SYMBOLCHARN     [_a-zA-Z\/\.\\\$\_\~0-9]
101 FILENAMECHAR    [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~]
102 WILDCHAR        [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*]
103 WHITE           [ \t\n\r]+
105 NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~]
107 V_TAG [.$_a-zA-Z][._a-zA-Z0-9]*
108 V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
110 %s SCRIPT
111 %s EXPRESSION
112 %s BOTH
113 %s DEFSYMEXP
114 %s MRI
115 %s VERS_START
116 %s VERS_SCRIPT
117 %s VERS_NODE
120   if (parser_input != input_selected)
121     {
122       /* The first token of the input determines the initial parser state.  */
123       input_type t = parser_input;
124       parser_input = input_selected;
125       switch (t)
126         {
127         case input_script: return INPUT_SCRIPT; break;
128         case input_mri_script: return INPUT_MRI_SCRIPT; break;
129         case input_version_script: return INPUT_VERSION_SCRIPT; break;
130         case input_dynamic_list: return INPUT_DYNAMIC_LIST; break;
131         case input_defsym: return INPUT_DEFSYM; break;
132         default: abort ();
133         }
134     }
136 <BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT>"/*"   { comment (); }
139 <DEFSYMEXP>"-"                  { RTOKEN('-');}
140 <DEFSYMEXP>"+"                  { RTOKEN('+');}
141 <DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}*   { yylval.name = xstrdup (yytext); return NAME; }
142 <DEFSYMEXP>"="                  { RTOKEN('='); }
144 <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {
145                                 yylval.integer = bfd_scan_vma (yytext + 1, 0, 16);
146                                 yylval.bigint.str = NULL;
147                                 return INT;
148                         }
150 <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) {
151                                    int ibase ;
152                                    switch (yytext[yyleng - 1]) {
153                                     case 'X':
154                                     case 'x':
155                                     case 'H':
156                                     case 'h':
157                                      ibase = 16;
158                                      break;
159                                     case 'O':
160                                     case 'o':
161                                      ibase = 8;
162                                      break;
163                                     case 'B':
164                                     case 'b':
165                                      ibase = 2;
166                                      break;
167                                     default:
168                                      ibase = 10;
169                                    }
170                                    yylval.integer = bfd_scan_vma (yytext, 0,
171                                                                   ibase);
172                                    yylval.bigint.str = NULL;
173                                    return INT;
174                                  }
175 <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? {
176                                   char *s = yytext;
177                                   int ibase = 0;
179                                   if (*s == '$')
180                                     {
181                                       ++s;
182                                       ibase = 16;
183                                     }
184                                   yylval.integer = bfd_scan_vma (s, 0, ibase);
185                                   yylval.bigint.str = NULL;
186                                   if (yytext[yyleng - 1] == 'M'
187                                       || yytext[yyleng - 1] == 'm')
188                                     {
189                                       yylval.integer *= 1024 * 1024;
190                                     }
191                                   else if (yytext[yyleng - 1] == 'K'
192                                       || yytext[yyleng - 1]=='k')
193                                     {
194                                       yylval.integer *= 1024;
195                                     }
196                                   else if (yytext[0] == '0'
197                                            && (yytext[1] == 'x'
198                                                || yytext[1] == 'X'))
199                                     {
200                                       yylval.bigint.str = xstrdup (yytext + 2);
201                                     }
202                                   return INT;
203                                 }
204 <BOTH,SCRIPT,EXPRESSION,MRI>"]"         { RTOKEN(']');}
205 <BOTH,SCRIPT,EXPRESSION,MRI>"["         { RTOKEN('[');}
206 <BOTH,SCRIPT,EXPRESSION,MRI>"<<="       { RTOKEN(LSHIFTEQ);}
207 <BOTH,SCRIPT,EXPRESSION,MRI>">>="       { RTOKEN(RSHIFTEQ);}
208 <BOTH,SCRIPT,EXPRESSION,MRI>"||"        { RTOKEN(OROR);}
209 <BOTH,SCRIPT,EXPRESSION,MRI>"=="        { RTOKEN(EQ);}
210 <BOTH,SCRIPT,EXPRESSION,MRI>"!="        { RTOKEN(NE);}
211 <BOTH,SCRIPT,EXPRESSION,MRI>">="        { RTOKEN(GE);}
212 <BOTH,SCRIPT,EXPRESSION,MRI>"<="        { RTOKEN(LE);}
213 <BOTH,SCRIPT,EXPRESSION,MRI>"<<"        { RTOKEN(LSHIFT);}
214 <BOTH,SCRIPT,EXPRESSION,MRI>">>"        { RTOKEN(RSHIFT);}
215 <BOTH,SCRIPT,EXPRESSION,MRI>"+="        { RTOKEN(PLUSEQ);}
216 <BOTH,SCRIPT,EXPRESSION,MRI>"-="        { RTOKEN(MINUSEQ);}
217 <BOTH,SCRIPT,EXPRESSION,MRI>"*="        { RTOKEN(MULTEQ);}
218 <BOTH,SCRIPT,EXPRESSION,MRI>"/="        { RTOKEN(DIVEQ);}
219 <BOTH,SCRIPT,EXPRESSION,MRI>"&="        { RTOKEN(ANDEQ);}
220 <BOTH,SCRIPT,EXPRESSION,MRI>"|="        { RTOKEN(OREQ);}
221 <BOTH,SCRIPT,EXPRESSION,MRI>"&&"        { RTOKEN(ANDAND);}
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,EXPRESSION,MRI>";"         { RTOKEN(';');}
242 <BOTH,SCRIPT>"MEMORY"                   { RTOKEN(MEMORY);}
243 <BOTH,SCRIPT>"REGION_ALIAS"             { RTOKEN(REGION_ALIAS);}
244 <BOTH,SCRIPT,EXPRESSION>"ORIGIN"        { RTOKEN(ORIGIN);}
245 <BOTH,SCRIPT>"VERSION"                  { RTOKEN(VERSIONK);}
246 <EXPRESSION,BOTH,SCRIPT>"BLOCK"         { RTOKEN(BLOCK);}
247 <EXPRESSION,BOTH,SCRIPT>"BIND"          { RTOKEN(BIND);}
248 <BOTH,SCRIPT,EXPRESSION>"LENGTH"        { RTOKEN(LENGTH);}
249 <EXPRESSION,BOTH,SCRIPT>"ALIGN"         { RTOKEN(ALIGN_K);}
250 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN"    { RTOKEN(DATA_SEGMENT_ALIGN);}
251 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_RELRO_END"        { RTOKEN(DATA_SEGMENT_RELRO_END);}
252 <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END"      { RTOKEN(DATA_SEGMENT_END);}
253 <EXPRESSION,BOTH,SCRIPT>"ADDR"          { RTOKEN(ADDR);}
254 <EXPRESSION,BOTH,SCRIPT>"LOADADDR"      { RTOKEN(LOADADDR);}
255 <EXPRESSION,BOTH,SCRIPT>"ALIGNOF"       { RTOKEN(ALIGNOF); }
256 <EXPRESSION,BOTH>"MAX"                  { RTOKEN(MAX_K); }
257 <EXPRESSION,BOTH>"MIN"                  { RTOKEN(MIN_K); }
258 <EXPRESSION,BOTH,SCRIPT>"ASSERT"        { RTOKEN(ASSERT_K); }
259 <BOTH,SCRIPT>"ENTRY"                    { RTOKEN(ENTRY);}
260 <BOTH,SCRIPT,MRI>"EXTERN"               { RTOKEN(EXTERN);}
261 <EXPRESSION,BOTH,SCRIPT>"NEXT"          { RTOKEN(NEXT);}
262 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers"        { RTOKEN(SIZEOF_HEADERS);}
263 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS"        { RTOKEN(SIZEOF_HEADERS);}
264 <EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);}
265 <BOTH,SCRIPT>"MAP"                      { RTOKEN(MAP);}
266 <EXPRESSION,BOTH,SCRIPT>"SIZEOF"        { RTOKEN(SIZEOF);}
267 <BOTH,SCRIPT>"TARGET"                   { RTOKEN(TARGET_K);}
268 <BOTH,SCRIPT>"SEARCH_DIR"               { RTOKEN(SEARCH_DIR);}
269 <BOTH,SCRIPT>"OUTPUT"                   { RTOKEN(OUTPUT);}
270 <BOTH,SCRIPT>"INPUT"                    { RTOKEN(INPUT);}
271 <EXPRESSION,BOTH,SCRIPT>"GROUP"         { RTOKEN(GROUP);}
272 <EXPRESSION,BOTH,SCRIPT>"AS_NEEDED"     { RTOKEN(AS_NEEDED);}
273 <EXPRESSION,BOTH,SCRIPT>"DEFINED"       { RTOKEN(DEFINED);}
274 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS"    { RTOKEN(CREATE_OBJECT_SYMBOLS);}
275 <BOTH,SCRIPT>"CONSTRUCTORS"             { RTOKEN( CONSTRUCTORS);}
276 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION"  { RTOKEN(FORCE_COMMON_ALLOCATION);}
277 <BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);}
278 <BOTH,SCRIPT>"SECTIONS"                 { RTOKEN(SECTIONS);}
279 <BOTH,SCRIPT>"INSERT"                   { RTOKEN(INSERT_K);}
280 <BOTH,SCRIPT>"AFTER"                    { RTOKEN(AFTER);}
281 <BOTH,SCRIPT>"BEFORE"                   { RTOKEN(BEFORE);}
282 <BOTH,SCRIPT>"FILL"                     { RTOKEN(FILL);}
283 <BOTH,SCRIPT>"STARTUP"                  { RTOKEN(STARTUP);}
284 <BOTH,SCRIPT>"OUTPUT_FORMAT"            { RTOKEN(OUTPUT_FORMAT);}
285 <BOTH,SCRIPT>"OUTPUT_ARCH"              { RTOKEN( OUTPUT_ARCH);}
286 <BOTH,SCRIPT>"HLL"                      { RTOKEN(HLL);}
287 <BOTH,SCRIPT>"SYSLIB"                   { RTOKEN(SYSLIB);}
288 <BOTH,SCRIPT>"FLOAT"                    { RTOKEN(FLOAT);}
289 <BOTH,SCRIPT>"QUAD"                     { RTOKEN( QUAD);}
290 <BOTH,SCRIPT>"SQUAD"                    { RTOKEN( SQUAD);}
291 <BOTH,SCRIPT>"LONG"                     { RTOKEN( LONG);}
292 <BOTH,SCRIPT>"SHORT"                    { RTOKEN( SHORT);}
293 <BOTH,SCRIPT>"BYTE"                     { RTOKEN( BYTE);}
294 <BOTH,SCRIPT>"NOFLOAT"                  { RTOKEN(NOFLOAT);}
295 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS"   { RTOKEN(NOCROSSREFS);}
296 <BOTH,SCRIPT>"OVERLAY"                  { RTOKEN(OVERLAY); }
297 <BOTH,SCRIPT>"SORT_BY_NAME"             { RTOKEN(SORT_BY_NAME); }
298 <BOTH,SCRIPT>"SORT_BY_ALIGNMENT"        { RTOKEN(SORT_BY_ALIGNMENT); }
299 <BOTH,SCRIPT>"SORT"                     { RTOKEN(SORT_BY_NAME); }
300 <EXPRESSION,BOTH,SCRIPT>"NOLOAD"        { RTOKEN(NOLOAD);}
301 <EXPRESSION,BOTH,SCRIPT>"DSECT"         { RTOKEN(DSECT);}
302 <EXPRESSION,BOTH,SCRIPT>"COPY"          { RTOKEN(COPY);}
303 <EXPRESSION,BOTH,SCRIPT>"INFO"          { RTOKEN(INFO);}
304 <EXPRESSION,BOTH,SCRIPT>"OVERLAY"       { RTOKEN(OVERLAY);}
305 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RO"    { RTOKEN(ONLY_IF_RO); }
306 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RW"    { RTOKEN(ONLY_IF_RW); }
307 <EXPRESSION,BOTH,SCRIPT>"SPECIAL"       { RTOKEN(SPECIAL); }
308 <BOTH,SCRIPT>"o"                        { RTOKEN(ORIGIN);}
309 <BOTH,SCRIPT>"org"                      { RTOKEN(ORIGIN);}
310 <BOTH,SCRIPT>"l"                        { RTOKEN( LENGTH);}
311 <BOTH,SCRIPT>"len"                      { RTOKEN( LENGTH);}
312 <EXPRESSION,BOTH,SCRIPT>"INCLUDE"       { RTOKEN(INCLUDE);}
313 <BOTH,SCRIPT>"PHDRS"                    { RTOKEN (PHDRS); }
314 <EXPRESSION,BOTH,SCRIPT>"AT"            { RTOKEN(AT);}
315 <EXPRESSION,BOTH,SCRIPT>"SUBALIGN"      { RTOKEN(SUBALIGN);}
316 <EXPRESSION,BOTH,SCRIPT>"PROVIDE"       { RTOKEN(PROVIDE); }
317 <EXPRESSION,BOTH,SCRIPT>"PROVIDE_HIDDEN" { RTOKEN(PROVIDE_HIDDEN); }
318 <EXPRESSION,BOTH,SCRIPT>"KEEP"          { RTOKEN(KEEP); }
319 <EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE"  { RTOKEN(EXCLUDE_FILE); }
320 <EXPRESSION,BOTH,SCRIPT>"CONSTANT"      { RTOKEN(CONSTANT);}
321 <MRI>"#".*\n?                   { ++ lineno; }
322 <MRI>"\n"                       { ++ lineno;  RTOKEN(NEWLINE); }
323 <MRI>"*".*                      { /* Mri comment line */ }
324 <MRI>";".*                      { /* Mri comment line */ }
325 <MRI>"END"                      { RTOKEN(ENDWORD); }
326 <MRI>"ALIGNMOD"                 { RTOKEN(ALIGNMOD);}
327 <MRI>"ALIGN"                    { RTOKEN(ALIGN_K);}
328 <MRI>"CHIP"                     { RTOKEN(CHIP); }
329 <MRI>"BASE"                     { RTOKEN(BASE); }
330 <MRI>"ALIAS"                    { RTOKEN(ALIAS); }
331 <MRI>"TRUNCATE"                 { RTOKEN(TRUNCATE); }
332 <MRI>"LOAD"                     { RTOKEN(LOAD); }
333 <MRI>"PUBLIC"                   { RTOKEN(PUBLIC); }
334 <MRI>"ORDER"                    { RTOKEN(ORDER); }
335 <MRI>"NAME"                     { RTOKEN(NAMEWORD); }
336 <MRI>"FORMAT"                   { RTOKEN(FORMAT); }
337 <MRI>"CASE"                     { RTOKEN(CASE); }
338 <MRI>"START"                    { RTOKEN(START); }
339 <MRI>"LIST".*                   { RTOKEN(LIST); /* LIST and ignore to end of line */ }
340 <MRI>"SECT"                     { RTOKEN(SECT); }
341 <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE"                  { RTOKEN(ABSOLUTE); }
342 <MRI>"end"                      { RTOKEN(ENDWORD); }
343 <MRI>"alignmod"                 { RTOKEN(ALIGNMOD);}
344 <MRI>"align"                    { RTOKEN(ALIGN_K);}
345 <MRI>"chip"                     { RTOKEN(CHIP); }
346 <MRI>"base"                     { RTOKEN(BASE); }
347 <MRI>"alias"                    { RTOKEN(ALIAS); }
348 <MRI>"truncate"                 { RTOKEN(TRUNCATE); }
349 <MRI>"load"                     { RTOKEN(LOAD); }
350 <MRI>"public"                   { RTOKEN(PUBLIC); }
351 <MRI>"order"                    { RTOKEN(ORDER); }
352 <MRI>"name"                     { RTOKEN(NAMEWORD); }
353 <MRI>"format"                   { RTOKEN(FORMAT); }
354 <MRI>"case"                     { RTOKEN(CASE); }
355 <MRI>"extern"                   { RTOKEN(EXTERN); }
356 <MRI>"start"                    { RTOKEN(START); }
357 <MRI>"list".*                   { RTOKEN(LIST); /* LIST and ignore to end of line */ }
358 <MRI>"sect"                     { RTOKEN(SECT); }
359 <EXPRESSION,BOTH,SCRIPT,MRI>"absolute"                  { RTOKEN(ABSOLUTE); }
361 <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}*  {
362 /* Filename without commas, needed to parse mri stuff */
363                                  yylval.name = xstrdup (yytext);
364                                   return NAME;
365                                 }
368 <BOTH>{FILENAMECHAR1}{FILENAMECHAR}*    {
369                                  yylval.name = xstrdup (yytext);
370                                   return NAME;
371                                 }
372 <BOTH>"-l"{FILENAMECHAR}+ {
373                                   yylval.name = xstrdup (yytext + 2);
374                                   return LNAME;
375                                 }
376 <EXPRESSION>{FILENAMECHAR1}{NOCFILENAMECHAR}*   {
377                                  yylval.name = xstrdup (yytext);
378                                   return NAME;
379                                 }
380 <EXPRESSION>"-l"{NOCFILENAMECHAR}+ {
381                                   yylval.name = xstrdup (yytext + 2);
382                                   return LNAME;
383                                 }
384 <SCRIPT>{WILDCHAR}* {
385                 /* Annoyingly, this pattern can match comments, and we have
386                    longest match issues to consider.  So if the first two
387                    characters are a comment opening, put the input back and
388                    try again.  */
389                 if (yytext[0] == '/' && yytext[1] == '*')
390                   {
391                     yyless (2);
392                     comment ();
393                   }
394                 else
395                   {
396                     yylval.name = xstrdup (yytext);
397                     return NAME;
398                   }
399         }
401 <EXPRESSION,BOTH,SCRIPT,VERS_NODE>"\""[^\"]*"\"" {
402                                         /* No matter the state, quotes
403                                            give what's inside */
404                                         yylval.name = xstrdup (yytext + 1);
405                                         yylval.name[yyleng - 2] = 0;
406                                         return NAME;
407                                 }
408 <BOTH,SCRIPT,EXPRESSION>"\n"            { lineno++;}
409 <MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+    { }
411 <VERS_NODE,VERS_SCRIPT>[:,;]    { return *yytext; }
413 <VERS_NODE>global               { RTOKEN(GLOBAL); }
415 <VERS_NODE>local                { RTOKEN(LOCAL); }
417 <VERS_NODE>extern               { RTOKEN(EXTERN); }
419 <VERS_NODE>{V_IDENTIFIER}       { yylval.name = xstrdup (yytext);
420                                   return VERS_IDENTIFIER; }
422 <VERS_SCRIPT>{V_TAG}            { yylval.name = xstrdup (yytext);
423                                   return VERS_TAG; }
425 <VERS_START>"{"                 { BEGIN(VERS_SCRIPT); return *yytext; }
427 <VERS_SCRIPT>"{"                { BEGIN(VERS_NODE);
428                                   vers_node_nesting = 0;
429                                   return *yytext;
430                                 }
431 <VERS_SCRIPT>"}"                { return *yytext; }
432 <VERS_NODE>"{"                  { vers_node_nesting++; return *yytext; }
433 <VERS_NODE>"}"                  { if (--vers_node_nesting < 0)
434                                     BEGIN(VERS_SCRIPT);
435                                   return *yytext;
436                                 }
438 <VERS_START,VERS_NODE,VERS_SCRIPT>[\n]          { lineno++; }
440 <VERS_START,VERS_NODE,VERS_SCRIPT>#.*           { /* Eat up comments */ }
442 <VERS_START,VERS_NODE,VERS_SCRIPT>[ \t\r]+      { /* Eat up whitespace */ }
444 <<EOF>> {
445   include_stack_ptr--;
447   if (include_stack_ptr == 0)
448   {
449     yyterminate ();
450   }
451   else
452   {
453     yy_switch_to_buffer (include_stack[include_stack_ptr]);
454   }
456   ldfile_input_filename = file_name_stack[include_stack_ptr - 1];
457   lineno = lineno_stack[include_stack_ptr];
459   return END;
462 <SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>.  lex_warn_invalid (" in script", yytext);
463 <EXPRESSION,DEFSYMEXP,BOTH>.    lex_warn_invalid (" in expression", yytext);
468 /* Switch flex to reading script file NAME, open on FILE,
469    saving the current input info on the include stack.  */
471 void
472 lex_push_file (FILE *file, const char *name)
474   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
475     {
476       einfo ("%F:includes nested too deeply\n");
477     }
478   file_name_stack[include_stack_ptr] = name;
479   lineno_stack[include_stack_ptr] = lineno;
480   include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
482   include_stack_ptr++;
483   lineno = 1;
484   yyin = file;
485   yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE));
488 /* Return a newly created flex input buffer containing STRING,
489    which is SIZE bytes long.  */
491 static YY_BUFFER_STATE
492 yy_create_string_buffer (const char *string, size_t size)
494   YY_BUFFER_STATE b;
496   /* Calls to m-alloc get turned by sed into xm-alloc.  */
497   b = malloc (sizeof (struct yy_buffer_state));
498   b->yy_input_file = 0;
499   b->yy_buf_size = size;
501   /* yy_ch_buf has to be 2 characters longer than the size given because
502      we need to put in 2 end-of-buffer characters.  */
503   b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3));
505   b->yy_ch_buf[0] = '\n';
506   strcpy (b->yy_ch_buf+1, string);
507   b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR;
508   b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR;
509   b->yy_n_chars = size+1;
510   b->yy_buf_pos = &b->yy_ch_buf[1];
512   b->yy_is_our_buffer = 1;
513   b->yy_is_interactive = 0;
514   b->yy_at_bol = 1;
515   b->yy_fill_buffer = 0;
517   /* flex 2.4.7 changed the interface.  FIXME: We should not be using
518      a flex internal interface in the first place!  */
519 #ifdef YY_BUFFER_NEW
520   b->yy_buffer_status = YY_BUFFER_NEW;
521 #else
522   b->yy_eof_status = EOF_NOT_SEEN;
523 #endif
525   return b;
528 /* Switch flex to reading from STRING, saving the current input info
529    on the include stack.  */
531 void
532 lex_redirect (const char *string)
534   YY_BUFFER_STATE tmp;
536   yy_init = 0;
537   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
538     {
539       einfo("%F: macros nested too deeply\n");
540     }
541   file_name_stack[include_stack_ptr] = "redirect";
542   lineno_stack[include_stack_ptr] = lineno;
543   include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
544   include_stack_ptr++;
545   lineno = 1;
546   tmp = yy_create_string_buffer (string, strlen (string));
547   yy_switch_to_buffer (tmp);
550 /* Functions to switch to a different flex start condition,
551    saving the current start condition on `state_stack'.  */
553 static int state_stack[MAX_INCLUDE_DEPTH * 2];
554 static int *state_stack_p = state_stack;
556 void
557 ldlex_script (void)
559   *(state_stack_p)++ = yy_start;
560   BEGIN (SCRIPT);
563 void
564 ldlex_mri_script (void)
566   *(state_stack_p)++ = yy_start;
567   BEGIN (MRI);
570 void
571 ldlex_version_script (void)
573   *(state_stack_p)++ = yy_start;
574   BEGIN (VERS_START);
577 void
578 ldlex_version_file (void)
580   *(state_stack_p)++ = yy_start;
581   BEGIN (VERS_SCRIPT);
584 void
585 ldlex_defsym (void)
587   *(state_stack_p)++ = yy_start;
588   BEGIN (DEFSYMEXP);
591 void
592 ldlex_expression (void)
594   *(state_stack_p)++ = yy_start;
595   BEGIN (EXPRESSION);
598 void
599 ldlex_both (void)
601   *(state_stack_p)++ = yy_start;
602   BEGIN (BOTH);
605 void
606 ldlex_popstate (void)
608   yy_start = *(--state_stack_p);
612 /* Place up to MAX_SIZE characters in BUF and return
613    either the number of characters read, or 0 to indicate EOF.  */
615 static int
616 yy_input (char *buf, int max_size)
618   int result = 0;
619   if (YY_CURRENT_BUFFER->yy_input_file)
620     {
621       if (yyin)
622         {
623           result = fread (buf, 1, max_size, yyin);
624           if (result < max_size && ferror (yyin))
625             einfo ("%F%P: read in flex scanner failed\n");
626         }
627     }
628   return result;
631 /* Eat the rest of a C-style comment.  */
633 static void
634 comment (void)
636   int c;
638   while (1)
639   {
640     c = input();
641     while (c != '*' && c != EOF)
642     {
643       if (c == '\n')
644         lineno++;
645       c = input();
646     }
648     if (c == '*')
649     {
650       c = input();
651       while (c == '*')
652        c = input();
653       if (c == '/')
654        break;                   /* found the end */
655     }
657     if (c == '\n')
658       lineno++;
660     if (c == EOF)
661     {
662       einfo( "%F%P: EOF in comment\n");
663       break;
664     }
665   }
668 /* Warn the user about a garbage character WHAT in the input
669    in context WHERE.  */
671 static void
672 lex_warn_invalid (char *where, char *what)
674   char buf[5];
676   /* If we have found an input file whose format we do not recognize,
677      and we are therefore treating it as a linker script, and we find
678      an invalid character, then most likely this is a real object file
679      of some different format.  Treat it as such.  */
680   if (ldfile_assumed_script)
681     {
682       bfd_set_error (bfd_error_file_not_recognized);
683       einfo ("%F%s: file not recognized: %E\n", ldfile_input_filename);
684     }
686   if (! ISPRINT (*what))
687     {
688       sprintf (buf, "\\%03o", (unsigned int) *what);
689       what = buf;
690     }
692   einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where);