Use %pI, %pR, %pS, %pT in place of %I, %R, %S and %T.
[external/binutils.git] / ld / ldlex.l
1 %option nounput noyywrap
2
3 %{
4
5 /* Copyright (C) 1991-2018 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
25 #include "bfd.h"
26 #include "safe-ctype.h"
27 #include "bfdlink.h"
28 #include "ld.h"
29 #include "ldmisc.h"
30 #include "ldexp.h"
31 #include "ldlang.h"
32 #include <ldgram.h>
33 #include "ldfile.h"
34 #include "ldlex.h"
35 #include "ldmain.h"
36 #include "libiberty.h"
37
38 /* The type of top-level parser input.
39    yylex and yyparse (indirectly) both check this.  */
40 input_type parser_input;
41
42 /* Line number in the current input file.  */
43 unsigned int lineno;
44
45 /* The string we are currently lexing, or NULL if we are reading a
46    file.  */
47 const char *lex_string = NULL;
48
49 /* Support for flex reading from more than one input file (stream).
50    `include_stack' is flex's input state for each open file;
51    `file_name_stack' is the file names.  `lineno_stack' is the current
52    line numbers.
53
54    If `include_stack_ptr' is 0, we haven't started reading anything yet.
55    Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid.  */
56
57 #undef YY_INPUT
58 #define YY_INPUT(buf,result,max_size) result = yy_input (buf, max_size)
59
60 #ifndef YY_NO_UNPUT
61 #define YY_NO_UNPUT
62 #endif
63
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 sysrooted_stack[MAX_INCLUDE_DEPTH];
69 static unsigned int include_stack_ptr = 0;
70 static int vers_node_nesting = 0;
71
72 static int yy_input (char *, int);
73 static void comment (void);
74 static void lex_warn_invalid (char *where, char *what);
75
76 /* STATES
77         EXPRESSION      definitely in an expression
78         SCRIPT          definitely in a script
79         INPUTLIST       definitely in a script, a filename-list
80         BOTH            either EXPRESSION or SCRIPT
81         DEFSYMEXP       in an argument to -defsym
82         MRI             in an MRI script
83         VERS_START      starting a Sun style mapfile
84         VERS_SCRIPT     a Sun style mapfile
85         VERS_NODE       a node within a Sun style mapfile
86 */
87 #define RTOKEN(x)  {  yylval.token = x; return x; }
88
89 %}
90
91 %a 4000
92 %o 5000
93
94 CMDFILENAMECHAR   [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~]
95 CMDFILENAMECHAR1  [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~]
96 FILENAMECHAR1   [_a-zA-Z\/\.\\\$\_\~]
97 SYMBOLNAMECHAR1 [_a-zA-Z\/\.\\\$\_]
98 SYMBOLCHARN     [_a-zA-Z\/\.\\\$\_\~0-9]
99 FILENAMECHAR    [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~]
100 WILDCHAR        [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*\^\!]
101 WHITE           [ \t\n\r]+
102
103 NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~]
104
105 V_TAG [.$_a-zA-Z][._a-zA-Z0-9]*
106 V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
107
108 %s SCRIPT
109 %s INPUTLIST
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,INPUTLIST>"/*" { comment (); }
136
137
138 <DEFSYMEXP>"-"                  { RTOKEN('-');}
139 <DEFSYMEXP>"+"                  { RTOKEN('+');}
140 <DEFSYMEXP>{SYMBOLNAMECHAR1}{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,INPUTLIST>","               { 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,INPUTLIST>")"               { RTOKEN(')');}
238 <BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>"("               { 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>"LD_FEATURE"               { RTOKEN(LD_FEATURE);}
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>"LOG2CEIL"             { RTOKEN(LOG2CEIL); }
259 <EXPRESSION,BOTH,SCRIPT>"ASSERT"        { RTOKEN(ASSERT_K); }
260 <BOTH,SCRIPT>"ENTRY"                    { RTOKEN(ENTRY);}
261 <BOTH,SCRIPT,MRI>"EXTERN"               { RTOKEN(EXTERN);}
262 <EXPRESSION,BOTH,SCRIPT>"NEXT"          { RTOKEN(NEXT);}
263 <EXPRESSION,BOTH,SCRIPT>"sizeof_headers"        { RTOKEN(SIZEOF_HEADERS);}
264 <EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS"        { RTOKEN(SIZEOF_HEADERS);}
265 <EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);}
266 <BOTH,SCRIPT>"MAP"                      { RTOKEN(MAP);}
267 <EXPRESSION,BOTH,SCRIPT>"SIZEOF"        { RTOKEN(SIZEOF);}
268 <BOTH,SCRIPT>"TARGET"                   { RTOKEN(TARGET_K);}
269 <BOTH,SCRIPT>"SEARCH_DIR"               { RTOKEN(SEARCH_DIR);}
270 <BOTH,SCRIPT>"OUTPUT"                   { RTOKEN(OUTPUT);}
271 <BOTH,SCRIPT>"INPUT"                    { RTOKEN(INPUT);}
272 <EXPRESSION,BOTH,SCRIPT>"GROUP"         { RTOKEN(GROUP);}
273 <EXPRESSION,BOTH,SCRIPT,INPUTLIST>"AS_NEEDED"   { RTOKEN(AS_NEEDED);}
274 <EXPRESSION,BOTH,SCRIPT>"DEFINED"       { RTOKEN(DEFINED);}
275 <BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS"    { RTOKEN(CREATE_OBJECT_SYMBOLS);}
276 <BOTH,SCRIPT>"CONSTRUCTORS"             { RTOKEN( CONSTRUCTORS);}
277 <BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION"  { RTOKEN(FORCE_COMMON_ALLOCATION);}
278 <BOTH,SCRIPT>"FORCE_GROUP_ALLOCATION"   { RTOKEN(FORCE_GROUP_ALLOCATION);}
279 <BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);}
280 <BOTH,SCRIPT>"SECTIONS"                 { RTOKEN(SECTIONS);}
281 <BOTH,SCRIPT>"INSERT"                   { RTOKEN(INSERT_K);}
282 <BOTH,SCRIPT>"AFTER"                    { RTOKEN(AFTER);}
283 <BOTH,SCRIPT>"BEFORE"                   { RTOKEN(BEFORE);}
284 <BOTH,SCRIPT>"FILL"                     { RTOKEN(FILL);}
285 <BOTH,SCRIPT>"STARTUP"                  { RTOKEN(STARTUP);}
286 <BOTH,SCRIPT>"OUTPUT_FORMAT"            { RTOKEN(OUTPUT_FORMAT);}
287 <BOTH,SCRIPT>"OUTPUT_ARCH"              { RTOKEN( OUTPUT_ARCH);}
288 <BOTH,SCRIPT>"HLL"                      { RTOKEN(HLL);}
289 <BOTH,SCRIPT>"SYSLIB"                   { RTOKEN(SYSLIB);}
290 <BOTH,SCRIPT>"FLOAT"                    { RTOKEN(FLOAT);}
291 <BOTH,SCRIPT>"QUAD"                     { RTOKEN( QUAD);}
292 <BOTH,SCRIPT>"SQUAD"                    { RTOKEN( SQUAD);}
293 <BOTH,SCRIPT>"LONG"                     { RTOKEN( LONG);}
294 <BOTH,SCRIPT>"SHORT"                    { RTOKEN( SHORT);}
295 <BOTH,SCRIPT>"BYTE"                     { RTOKEN( BYTE);}
296 <BOTH,SCRIPT>"NOFLOAT"                  { RTOKEN(NOFLOAT);}
297 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS"   { RTOKEN(NOCROSSREFS);}
298 <EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS_TO" { RTOKEN(NOCROSSREFS_TO);}
299 <BOTH,SCRIPT>"OVERLAY"                  { RTOKEN(OVERLAY); }
300 <BOTH,SCRIPT>"SORT_BY_NAME"             { RTOKEN(SORT_BY_NAME); }
301 <BOTH,SCRIPT>"SORT_BY_ALIGNMENT"        { RTOKEN(SORT_BY_ALIGNMENT); }
302 <BOTH,SCRIPT>"SORT"                     { RTOKEN(SORT_BY_NAME); }
303 <BOTH,SCRIPT>"SORT_BY_INIT_PRIORITY"    { RTOKEN(SORT_BY_INIT_PRIORITY); }
304 <BOTH,SCRIPT>"SORT_NONE"                { RTOKEN(SORT_NONE); }
305 <EXPRESSION,BOTH,SCRIPT>"NOLOAD"        { RTOKEN(NOLOAD);}
306 <EXPRESSION,BOTH,SCRIPT>"DSECT"         { RTOKEN(DSECT);}
307 <EXPRESSION,BOTH,SCRIPT>"COPY"          { RTOKEN(COPY);}
308 <EXPRESSION,BOTH,SCRIPT>"INFO"          { RTOKEN(INFO);}
309 <EXPRESSION,BOTH,SCRIPT>"OVERLAY"       { RTOKEN(OVERLAY);}
310 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RO"    { RTOKEN(ONLY_IF_RO); }
311 <EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RW"    { RTOKEN(ONLY_IF_RW); }
312 <EXPRESSION,BOTH,SCRIPT>"SPECIAL"       { RTOKEN(SPECIAL); }
313 <BOTH,SCRIPT>"o"                        { RTOKEN(ORIGIN);}
314 <BOTH,SCRIPT>"org"                      { RTOKEN(ORIGIN);}
315 <BOTH,SCRIPT>"l"                        { RTOKEN( LENGTH);}
316 <BOTH,SCRIPT>"len"                      { RTOKEN( LENGTH);}
317 <EXPRESSION,BOTH,SCRIPT>"INPUT_SECTION_FLAGS"   { RTOKEN(INPUT_SECTION_FLAGS); }
318 <EXPRESSION,BOTH,SCRIPT>"INCLUDE"       { RTOKEN(INCLUDE);}
319 <BOTH,SCRIPT>"PHDRS"                    { RTOKEN (PHDRS); }
320 <EXPRESSION,BOTH,SCRIPT>"AT"            { RTOKEN(AT);}
321 <EXPRESSION,BOTH,SCRIPT>"ALIGN_WITH_INPUT"      { RTOKEN(ALIGN_WITH_INPUT);}
322 <EXPRESSION,BOTH,SCRIPT>"SUBALIGN"      { RTOKEN(SUBALIGN);}
323 <EXPRESSION,BOTH,SCRIPT>"HIDDEN"        { RTOKEN(HIDDEN); }
324 <EXPRESSION,BOTH,SCRIPT>"PROVIDE"       { RTOKEN(PROVIDE); }
325 <EXPRESSION,BOTH,SCRIPT>"PROVIDE_HIDDEN" { RTOKEN(PROVIDE_HIDDEN); }
326 <EXPRESSION,BOTH,SCRIPT>"KEEP"          { RTOKEN(KEEP); }
327 <EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE"  { RTOKEN(EXCLUDE_FILE); }
328 <EXPRESSION,BOTH,SCRIPT>"CONSTANT"      { RTOKEN(CONSTANT);}
329 <MRI>"#".*\n?                   { ++ lineno; }
330 <MRI>"\n"                       { ++ lineno;  RTOKEN(NEWLINE); }
331 <MRI>"*".*                      { /* Mri comment line */ }
332 <MRI>";".*                      { /* Mri comment line */ }
333 <MRI>"END"                      { RTOKEN(ENDWORD); }
334 <MRI>"ALIGNMOD"                 { RTOKEN(ALIGNMOD);}
335 <MRI>"ALIGN"                    { RTOKEN(ALIGN_K);}
336 <MRI>"CHIP"                     { RTOKEN(CHIP); }
337 <MRI>"BASE"                     { RTOKEN(BASE); }
338 <MRI>"ALIAS"                    { RTOKEN(ALIAS); }
339 <MRI>"TRUNCATE"                 { RTOKEN(TRUNCATE); }
340 <MRI>"LOAD"                     { RTOKEN(LOAD); }
341 <MRI>"PUBLIC"                   { RTOKEN(PUBLIC); }
342 <MRI>"ORDER"                    { RTOKEN(ORDER); }
343 <MRI>"NAME"                     { RTOKEN(NAMEWORD); }
344 <MRI>"FORMAT"                   { RTOKEN(FORMAT); }
345 <MRI>"CASE"                     { RTOKEN(CASE); }
346 <MRI>"START"                    { RTOKEN(START); }
347 <MRI>"LIST".*                   { RTOKEN(LIST); /* LIST and ignore to end of line */ }
348 <MRI>"SECT"                     { RTOKEN(SECT); }
349 <EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE"                  { RTOKEN(ABSOLUTE); }
350 <MRI>"end"                      { RTOKEN(ENDWORD); }
351 <MRI>"alignmod"                 { RTOKEN(ALIGNMOD);}
352 <MRI>"align"                    { RTOKEN(ALIGN_K);}
353 <MRI>"chip"                     { RTOKEN(CHIP); }
354 <MRI>"base"                     { RTOKEN(BASE); }
355 <MRI>"alias"                    { RTOKEN(ALIAS); }
356 <MRI>"truncate"                 { RTOKEN(TRUNCATE); }
357 <MRI>"load"                     { RTOKEN(LOAD); }
358 <MRI>"public"                   { RTOKEN(PUBLIC); }
359 <MRI>"order"                    { RTOKEN(ORDER); }
360 <MRI>"name"                     { RTOKEN(NAMEWORD); }
361 <MRI>"format"                   { RTOKEN(FORMAT); }
362 <MRI>"case"                     { RTOKEN(CASE); }
363 <MRI>"extern"                   { RTOKEN(EXTERN); }
364 <MRI>"start"                    { RTOKEN(START); }
365 <MRI>"list".*                   { RTOKEN(LIST); /* LIST and ignore to end of line */ }
366 <MRI>"sect"                     { RTOKEN(SECT); }
367 <EXPRESSION,BOTH,SCRIPT,MRI>"absolute"                  { RTOKEN(ABSOLUTE); }
368
369 <MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}*  {
370 /* Filename without commas, needed to parse mri stuff */
371                                  yylval.name = xstrdup (yytext);
372                                   return NAME;
373                                 }
374
375
376 <BOTH,INPUTLIST>{FILENAMECHAR1}{FILENAMECHAR}*  {
377                                  yylval.name = xstrdup (yytext);
378                                   return NAME;
379                                 }
380 <INPUTLIST>"="{FILENAMECHAR1}{FILENAMECHAR}*    {
381 /* Filename to be prefixed by --sysroot or when non-sysrooted, nothing.  */
382                                  yylval.name = xstrdup (yytext);
383                                   return NAME;
384                                 }
385 <INPUTLIST>"$SYSROOT"{FILENAMECHAR1}{FILENAMECHAR}*     {
386 /* Filename to be prefixed by --sysroot or when non-sysrooted, nothing.  */
387                                  yylval.name = xstrdup (yytext);
388                                   return NAME;
389                                 }
390 <BOTH,INPUTLIST>"-l"{FILENAMECHAR}+ {
391                                   yylval.name = xstrdup (yytext + 2);
392                                   return LNAME;
393                                 }
394 <EXPRESSION>{SYMBOLNAMECHAR1}{NOCFILENAMECHAR}* {
395                                  yylval.name = xstrdup (yytext);
396                                   return NAME;
397                                 }
398 <EXPRESSION>"-l"{NOCFILENAMECHAR}+ {
399                                   yylval.name = xstrdup (yytext + 2);
400                                   return LNAME;
401                                 }
402 <SCRIPT>{WILDCHAR}* {
403                 /* Annoyingly, this pattern can match comments, and we have
404                    longest match issues to consider.  So if the first two
405                    characters are a comment opening, put the input back and
406                    try again.  */
407                 if (yytext[0] == '/' && yytext[1] == '*')
408                   {
409                     yyless (2);
410                     comment ();
411                   }
412                 else
413                   {
414                     yylval.name = xstrdup (yytext);
415                     return NAME;
416                   }
417         }
418
419 <EXPRESSION,BOTH,SCRIPT,VERS_NODE,INPUTLIST>"\""[^\"]*"\"" {
420                                         /* No matter the state, quotes
421                                            give what's inside.  */
422                                         bfd_size_type len;
423                                         yylval.name = xstrdup (yytext + 1);
424                                         /* PR ld/20906.  A corrupt input file
425                                            can contain bogus strings.  */
426                                         len = strlen (yylval.name);
427                                         if (len > yyleng - 2)
428                                           len = yyleng - 2;
429                                         yylval.name[len] = 0;
430                                         return NAME;
431                                 }
432 <BOTH,SCRIPT,EXPRESSION>"\n"            { lineno++;}
433 <MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+    { }
434
435 <VERS_NODE,VERS_SCRIPT>[:,;]    { return *yytext; }
436
437 <VERS_NODE>global               { RTOKEN(GLOBAL); }
438
439 <VERS_NODE>local                { RTOKEN(LOCAL); }
440
441 <VERS_NODE>extern               { RTOKEN(EXTERN); }
442
443 <VERS_NODE>{V_IDENTIFIER}       { yylval.name = xstrdup (yytext);
444                                   return VERS_IDENTIFIER; }
445
446 <VERS_SCRIPT>{V_TAG}            { yylval.name = xstrdup (yytext);
447                                   return VERS_TAG; }
448
449 <VERS_START>"{"                 { BEGIN(VERS_SCRIPT); return *yytext; }
450
451 <VERS_SCRIPT>"{"                { BEGIN(VERS_NODE);
452                                   vers_node_nesting = 0;
453                                   return *yytext;
454                                 }
455 <VERS_SCRIPT>"}"                { return *yytext; }
456 <VERS_NODE>"{"                  { vers_node_nesting++; return *yytext; }
457 <VERS_NODE>"}"                  { if (--vers_node_nesting < 0)
458                                     BEGIN(VERS_SCRIPT);
459                                   return *yytext;
460                                 }
461
462 <VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>[\n]        { lineno++; }
463
464 <VERS_START,VERS_NODE,VERS_SCRIPT>#.*           { /* Eat up comments */ }
465
466 <VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>[ \t\r]+    { /* Eat up whitespace */ }
467
468 <<EOF>> {
469   include_stack_ptr--;
470   if (include_stack_ptr == 0)
471     {
472       lineno = 0;
473       yyterminate ();
474     }
475   else
476     yy_switch_to_buffer (include_stack[include_stack_ptr]);
477
478   lineno = lineno_stack[include_stack_ptr];
479   input_flags.sysrooted = sysrooted_stack[include_stack_ptr];
480
481   return END;
482 }
483
484 <SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>.  lex_warn_invalid (" in script", yytext);
485 <EXPRESSION,DEFSYMEXP,BOTH>.    lex_warn_invalid (" in expression", yytext);
486
487 %%
488 \f
489
490 /* Switch flex to reading script file NAME, open on FILE,
491    saving the current input info on the include stack.  */
492
493 void
494 lex_push_file (FILE *file, const char *name, unsigned int sysrooted)
495 {
496   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
497     {
498       einfo (_("%F:includes nested too deeply\n"));
499     }
500   file_name_stack[include_stack_ptr] = name;
501   lineno_stack[include_stack_ptr] = lineno;
502   sysrooted_stack[include_stack_ptr] = input_flags.sysrooted;
503   include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
504
505   include_stack_ptr++;
506   lineno = 1;
507   input_flags.sysrooted = sysrooted;
508   yyin = file;
509   yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE));
510 }
511
512 /* Return a newly created flex input buffer containing STRING,
513    which is SIZE bytes long.  */
514
515 static YY_BUFFER_STATE
516 yy_create_string_buffer (const char *string, size_t size)
517 {
518   YY_BUFFER_STATE b;
519
520   /* Calls to m-alloc get turned by sed into xm-alloc.  */
521   b = malloc (sizeof (struct yy_buffer_state));
522   b->yy_input_file = 0;
523   b->yy_buf_size = size;
524
525   /* yy_ch_buf has to be 2 characters longer than the size given because
526      we need to put in 2 end-of-buffer characters.  */
527   b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3));
528
529   b->yy_ch_buf[0] = '\n';
530   strcpy (b->yy_ch_buf+1, string);
531   b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR;
532   b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR;
533   b->yy_n_chars = size+1;
534   b->yy_buf_pos = &b->yy_ch_buf[1];
535
536   b->yy_is_our_buffer = 1;
537   b->yy_is_interactive = 0;
538   b->yy_at_bol = 1;
539   b->yy_fill_buffer = 0;
540
541   /* flex 2.4.7 changed the interface.  FIXME: We should not be using
542      a flex internal interface in the first place!  */
543 #ifdef YY_BUFFER_NEW
544   b->yy_buffer_status = YY_BUFFER_NEW;
545 #else
546   b->yy_eof_status = EOF_NOT_SEEN;
547 #endif
548
549   return b;
550 }
551
552 /* Switch flex to reading from STRING, saving the current input info
553    on the include stack.  */
554
555 void
556 lex_redirect (const char *string, const char *fake_filename, unsigned int count)
557 {
558   YY_BUFFER_STATE tmp;
559
560   yy_init = 0;
561   if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
562     {
563       einfo (_("%F: macros nested too deeply\n"));
564     }
565   file_name_stack[include_stack_ptr] = fake_filename;
566   lineno_stack[include_stack_ptr] = lineno;
567   include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
568   include_stack_ptr++;
569   lineno = count;
570   tmp = yy_create_string_buffer (string, strlen (string));
571   yy_switch_to_buffer (tmp);
572 }
573 \f
574 /* Functions to switch to a different flex start condition,
575    saving the current start condition on `state_stack'.  */
576
577 static int state_stack[MAX_INCLUDE_DEPTH * 2];
578 static int *state_stack_p = state_stack;
579
580 void
581 ldlex_script (void)
582 {
583   *(state_stack_p)++ = yy_start;
584   BEGIN (SCRIPT);
585 }
586
587 void
588 ldlex_inputlist (void)
589 {
590   *(state_stack_p)++ = yy_start;
591   BEGIN (INPUTLIST);
592 }
593
594 void
595 ldlex_mri_script (void)
596 {
597   *(state_stack_p)++ = yy_start;
598   BEGIN (MRI);
599 }
600
601 void
602 ldlex_version_script (void)
603 {
604   *(state_stack_p)++ = yy_start;
605   BEGIN (VERS_START);
606 }
607
608 void
609 ldlex_version_file (void)
610 {
611   *(state_stack_p)++ = yy_start;
612   BEGIN (VERS_SCRIPT);
613 }
614
615 void
616 ldlex_defsym (void)
617 {
618   *(state_stack_p)++ = yy_start;
619   BEGIN (DEFSYMEXP);
620 }
621
622 void
623 ldlex_expression (void)
624 {
625   *(state_stack_p)++ = yy_start;
626   BEGIN (EXPRESSION);
627 }
628
629 void
630 ldlex_both (void)
631 {
632   *(state_stack_p)++ = yy_start;
633   BEGIN (BOTH);
634 }
635
636 void
637 ldlex_popstate (void)
638 {
639   yy_start = *(--state_stack_p);
640 }
641
642 /* Return the current file name, or the previous file if no file is
643    current.  */
644
645 const char*
646 ldlex_filename (void)
647 {
648   return file_name_stack[include_stack_ptr - (include_stack_ptr != 0)];
649 }
650 \f
651
652 /* Place up to MAX_SIZE characters in BUF and return
653    either the number of characters read, or 0 to indicate EOF.  */
654
655 static int
656 yy_input (char *buf, int max_size)
657 {
658   int result = 0;
659   if (YY_CURRENT_BUFFER->yy_input_file)
660     {
661       if (yyin)
662         {
663           result = fread (buf, 1, max_size, yyin);
664           if (result < max_size && ferror (yyin))
665             einfo (_("%F%P: read in flex scanner failed\n"));
666         }
667     }
668   return result;
669 }
670
671 /* Eat the rest of a C-style comment.  */
672
673 static void
674 comment (void)
675 {
676   int c;
677
678   while (1)
679     {
680       c = input();
681       while (c != '*' && c != EOF)
682         {
683           if (c == '\n')
684             lineno++;
685           c = input();
686         }
687
688       if (c == '*')
689         {
690           c = input();
691           while (c == '*')
692             c = input();
693           if (c == '/')
694             break;                      /* found the end */
695         }
696
697       if (c == '\n')
698         lineno++;
699
700       if (c == EOF)
701         {
702           einfo (_("%F%P: EOF in comment\n"));
703           break;
704         }
705     }
706 }
707
708 /* Warn the user about a garbage character WHAT in the input
709    in context WHERE.  */
710
711 static void
712 lex_warn_invalid (char *where, char *what)
713 {
714   char buf[5];
715
716   /* If we have found an input file whose format we do not recognize,
717      and we are therefore treating it as a linker script, and we find
718      an invalid character, then most likely this is a real object file
719      of some different format.  Treat it as such.  */
720   if (ldfile_assumed_script)
721     {
722       bfd_set_error (bfd_error_file_not_recognized);
723       einfo (_("%F%s: file not recognized: %E\n"), ldlex_filename ());
724     }
725
726   if (! ISPRINT (*what))
727     {
728       sprintf (buf, "\\%03o", *(unsigned char *) what);
729       what = buf;
730     }
731
732   einfo (_("%P:%pS: ignoring invalid character `%s'%s\n"), NULL, what, where);
733 }