binutils 2.20: Upgrade to version 2.20.1
[dragonfly.git] / contrib / binutils-2.20 / ld / ldlex.l
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8e158dd0
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1%{
2
3/* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
5 Free Software Foundation, Inc.
6 Written by Steve Chamberlain of Cygnus Support.
7
8 This file is part of the GNU Binutils.
9
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.
14
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.
19
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. */
24
182ccc58 25#include "sysdep.h"
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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"
38
39/* The type of top-level parser input.
40 yylex and yyparse (indirectly) both check this. */
41input_type parser_input;
42
43/* Line number in the current input file.
44 (FIXME Actually, it doesn't appear to get reset for each file?) */
45unsigned int lineno = 1;
46
47/* The string we are currently lexing, or NULL if we are reading a
48 file. */
49const char *lex_string = NULL;
50
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.
55
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. */
58
59#undef YY_INPUT
60#define YY_INPUT(buf,result,max_size) result = yy_input (buf, max_size)
61
62#define YY_NO_UNPUT
63
64#define MAX_INCLUDE_DEPTH 10
65static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
66static const char *file_name_stack[MAX_INCLUDE_DEPTH];
67static unsigned int lineno_stack[MAX_INCLUDE_DEPTH];
68static unsigned int include_stack_ptr = 0;
69static int vers_node_nesting = 0;
70
71static int yy_input (char *, int);
72static void comment (void);
73static void lex_warn_invalid (char *where, char *what);
74
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
84*/
85#define RTOKEN(x) { yylval.token = x; return x; }
86
87/* Some versions of flex want this. */
88#ifndef yywrap
89int yywrap (void) { return 1; }
90#endif
91%}
92
93%a 4000
94%o 5000
95
96CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~]
97CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~]
98FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~]
99SYMBOLCHARN [_a-zA-Z\/\.\\\$\_\~0-9]
100FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~]
101WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*]
102WHITE [ \t\n\r]+
103
104NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~]
105
106V_TAG [.$_a-zA-Z][._a-zA-Z0-9]*
107V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
108
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
117%%
118
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 }
134
135<BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT>"/*" { comment (); }
136
137
138<DEFSYMEXP>"-" { RTOKEN('-');}
139<DEFSYMEXP>"+" { RTOKEN('+');}
140<DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}* { yylval.name = xstrdup (yytext); return NAME; }
141<DEFSYMEXP>"=" { RTOKEN('='); }
142
143<MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {
144 yylval.integer = bfd_scan_vma (yytext + 1, 0, 16);
145 yylval.bigint.str = NULL;
146 return INT;
147 }
148
149<MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) {
150 int ibase ;
151 switch (yytext[yyleng - 1]) {
152 case 'X':
153 case 'x':
154 case 'H':
155 case 'h':
156 ibase = 16;
157 break;
158 case 'O':
159 case 'o':
160 ibase = 8;
161 break;
162 case 'B':
163 case 'b':
164 ibase = 2;
165 break;
166 default:
167 ibase = 10;
168 }
169 yylval.integer = bfd_scan_vma (yytext, 0,
170 ibase);
171 yylval.bigint.str = NULL;
172 return INT;
173 }
174<SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? {
175 char *s = yytext;
176 int ibase = 0;
177
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); }
359
360<MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}* {
361/* Filename without commas, needed to parse mri stuff */
362 yylval.name = xstrdup (yytext);
363 return NAME;
364 }
365
366
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 }
399
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]+ { }
409
410<VERS_NODE,VERS_SCRIPT>[:,;] { return *yytext; }
411
412<VERS_NODE>global { RTOKEN(GLOBAL); }
413
414<VERS_NODE>local { RTOKEN(LOCAL); }
415
416<VERS_NODE>extern { RTOKEN(EXTERN); }
417
418<VERS_NODE>{V_IDENTIFIER} { yylval.name = xstrdup (yytext);
419 return VERS_IDENTIFIER; }
420
421<VERS_SCRIPT>{V_TAG} { yylval.name = xstrdup (yytext);
422 return VERS_TAG; }
423
424<VERS_START>"{" { BEGIN(VERS_SCRIPT); return *yytext; }
425
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 }
436
437<VERS_START,VERS_NODE,VERS_SCRIPT>[\n] { lineno++; }
438
439<VERS_START,VERS_NODE,VERS_SCRIPT>#.* { /* Eat up comments */ }
440
441<VERS_START,VERS_NODE,VERS_SCRIPT>[ \t\r]+ { /* Eat up whitespace */ }
442
443<<EOF>> {
444 include_stack_ptr--;
445
446 if (include_stack_ptr == 0)
447 {
448 yyterminate ();
449 }
450 else
451 {
452 yy_switch_to_buffer (include_stack[include_stack_ptr]);
453 }
454
455 ldfile_input_filename = file_name_stack[include_stack_ptr - 1];
456 lineno = lineno_stack[include_stack_ptr];
457
458 return END;
459}
460
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);
463
464%%
465\f
466
467/* Switch flex to reading script file NAME, open on FILE,
468 saving the current input info on the include stack. */
469
470void
471lex_push_file (FILE *file, const char *name)
472{
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;
480
481 include_stack_ptr++;
482 lineno = 1;
483 yyin = file;
484 yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE));
485}
486
487/* Return a newly created flex input buffer containing STRING,
488 which is SIZE bytes long. */
489
490static YY_BUFFER_STATE
491yy_create_string_buffer (const char *string, size_t size)
492{
493 YY_BUFFER_STATE b;
494
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;
499
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));
503
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];
510
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;
515
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
523
524 return b;
525}
526
527/* Switch flex to reading from STRING, saving the current input info
528 on the include stack. */
529
530void
531lex_redirect (const char *string)
532{
533 YY_BUFFER_STATE tmp;
534
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);
547}
548\f
549/* Functions to switch to a different flex start condition,
550 saving the current start condition on `state_stack'. */
551
552static int state_stack[MAX_INCLUDE_DEPTH * 2];
553static int *state_stack_p = state_stack;
554
555void
556ldlex_script (void)
557{
558 *(state_stack_p)++ = yy_start;
559 BEGIN (SCRIPT);
560}
561
562void
563ldlex_mri_script (void)
564{
565 *(state_stack_p)++ = yy_start;
566 BEGIN (MRI);
567}
568
569void
570ldlex_version_script (void)
571{
572 *(state_stack_p)++ = yy_start;
573 BEGIN (VERS_START);
574}
575
576void
577ldlex_version_file (void)
578{
579 *(state_stack_p)++ = yy_start;
580 BEGIN (VERS_SCRIPT);
581}
582
583void
584ldlex_defsym (void)
585{
586 *(state_stack_p)++ = yy_start;
587 BEGIN (DEFSYMEXP);
588}
589
590void
591ldlex_expression (void)
592{
593 *(state_stack_p)++ = yy_start;
594 BEGIN (EXPRESSION);
595}
596
597void
598ldlex_both (void)
599{
600 *(state_stack_p)++ = yy_start;
601 BEGIN (BOTH);
602}
603
604void
605ldlex_popstate (void)
606{
607 yy_start = *(--state_stack_p);
608}
609\f
610
611/* Place up to MAX_SIZE characters in BUF and return
612 either the number of characters read, or 0 to indicate EOF. */
613
614static int
615yy_input (char *buf, int max_size)
616{
617 int 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 }
627 return result;
628}
629
630/* Eat the rest of a C-style comment. */
631
632static void
633comment (void)
634{
635 int c;
636
637 while (1)
638 {
639 c = input();
640 while (c != '*' && c != EOF)
641 {
642 if (c == '\n')
643 lineno++;
644 c = input();
645 }
646
647 if (c == '*')
648 {
649 c = input();
650 while (c == '*')
651 c = input();
652 if (c == '/')
653 break; /* found the end */
654 }
655
656 if (c == '\n')
657 lineno++;
658
659 if (c == EOF)
660 {
661 einfo( "%F%P: EOF in comment\n");
662 break;
663 }
664 }
665}
666
667/* Warn the user about a garbage character WHAT in the input
668 in context WHERE. */
669
670static void
671lex_warn_invalid (char *where, char *what)
672{
673 char buf[5];
674
675 /* If we have found an input file whose format we do not recognize,
676 and we are therefore treating it as a linker script, and we find
677 an invalid character, then most likely this is a real object file
678 of some different format. Treat it as such. */
679 if (ldfile_assumed_script)
680 {
681 bfd_set_error (bfd_error_file_not_recognized);
682 einfo ("%F%s: file not recognized: %E\n", ldfile_input_filename);
683 }
684
685 if (! ISPRINT (*what))
686 {
687 sprintf (buf, "\\%03o", (unsigned int) *what);
688 what = buf;
689 }
690
691 einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where);
692}