1 %{/* nlmheader.y - parse NLM header specification keywords.
2 Copyright 1993, 1994, 1995, 1997, 1998, 2001, 2002
3 Free Software Foundation, Inc.
5 This file is part of GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* Written by Ian Lance Taylor <ian@cygnus.com>.
23 This bison file parses the commands recognized by the NetWare NLM
24 linker, except for lists of object files. It stores the
25 information in global variables.
27 This implementation is based on the description in the NetWare Tool
28 Maker Specification manual, edition 1.0. */
32 #include "safe-ctype.h"
35 #include "nlm/common.h"
36 #include "nlm/internal.h"
39 /* Information is stored in the structures pointed to by these
42 Nlm_Internal_Fixed_Header *fixed_hdr;
43 Nlm_Internal_Variable_Header *var_hdr;
44 Nlm_Internal_Version_Header *version_hdr;
45 Nlm_Internal_Copyright_Header *copyright_hdr;
46 Nlm_Internal_Extended_Header *extended_hdr;
48 /* Procedure named by CHECK. */
49 char *check_procedure;
50 /* File named by CUSTOM. */
52 /* Whether to generate debugging information (DEBUG). */
54 /* Procedure named by EXIT. */
56 /* Exported symbols (EXPORT). */
57 struct string_list *export_symbols;
58 /* List of files from INPUT. */
59 struct string_list *input_files;
60 /* Map file name (MAP, FULLMAP). */
62 /* Whether a full map has been requested (FULLMAP). */
64 /* File named by HELP. */
66 /* Imported symbols (IMPORT). */
67 struct string_list *import_symbols;
68 /* File named by MESSAGES. */
70 /* Autoload module list (MODULE). */
71 struct string_list *modules;
72 /* File named by OUTPUT. */
74 /* File named by SHARELIB. */
76 /* Start procedure name (START). */
77 char *start_procedure;
80 /* RPC description file (XDCDATA). */
83 /* The number of serious errors that have occurred. */
86 /* The current symbol prefix when reading a list of import or export
88 static char *symbol_prefix;
90 /* Parser error message handler. */
91 #define yyerror(msg) nlmheader_error (msg);
93 /* Local functions. */
94 static int yylex PARAMS ((void));
95 static void nlmlex_file_push PARAMS ((const char *));
96 static boolean nlmlex_file_open PARAMS ((const char *));
97 static int nlmlex_buf_init PARAMS ((void));
98 static char nlmlex_buf_add PARAMS ((int));
99 static long nlmlex_get_number PARAMS ((const char *));
100 static void nlmheader_identify PARAMS ((void));
101 static void nlmheader_warn PARAMS ((const char *, int));
102 static void nlmheader_error PARAMS ((const char *));
103 static struct string_list * string_list_cons PARAMS ((char *,
104 struct string_list *));
105 static struct string_list * string_list_append PARAMS ((struct string_list *,
106 struct string_list *));
107 static struct string_list * string_list_append1 PARAMS ((struct string_list *,
109 static char *xstrdup PARAMS ((const char *));
116 struct string_list *list;
119 /* The reserved words. */
121 %token CHECK CODESTART COPYRIGHT CUSTOM DATE DEBUG DESCRIPTION EXIT
122 %token EXPORT FLAG_ON FLAG_OFF FULLMAP HELP IMPORT INPUT MAP MESSAGES
123 %token MODULE MULTIPLE OS_DOMAIN OUTPUT PSEUDOPREEMPTION REENTRANT
124 %token SCREENNAME SHARELIB STACK START SYNCHRONIZE
125 %token THREADNAME TYPE VERBOSE VERSIONK XDCDATA
129 %token <string> STRING
130 %token <string> QUOTED_STRING
132 /* Typed non-terminals. */
133 %type <list> symbol_list_opt symbol_list string_list
134 %type <string> symbol
138 /* Keywords must start in the leftmost column of the file. Arguments
139 may appear anywhere else. The lexer uses this to determine what
140 token to return, so we don't have to worry about it here. */
142 /* The entire file is just a list of commands. */
148 /* A possibly empty list of commands. */
155 /* A single command. There is where most of the work takes place. */
160 check_procedure = $2;
164 nlmheader_warn (_("CODESTART is not implemented; sorry"), -1);
167 | COPYRIGHT QUOTED_STRING
171 strncpy (copyright_hdr->stamp, "CoPyRiGhT=", 10);
173 if (len >= NLM_MAX_COPYRIGHT_MESSAGE_LENGTH)
175 nlmheader_warn (_("copyright string is too long"),
176 NLM_MAX_COPYRIGHT_MESSAGE_LENGTH - 1);
177 len = NLM_MAX_COPYRIGHT_MESSAGE_LENGTH - 1;
179 copyright_hdr->copyrightMessageLength = len;
180 strncpy (copyright_hdr->copyrightMessage, $2, len);
181 copyright_hdr->copyrightMessage[len] = '\0';
188 | DATE STRING STRING STRING
190 /* We don't set the version stamp here, because we use the
191 version stamp to detect whether the required VERSION
192 keyword was given. */
193 version_hdr->month = nlmlex_get_number ($2);
194 version_hdr->day = nlmlex_get_number ($3);
195 version_hdr->year = nlmlex_get_number ($4);
199 if (version_hdr->month < 1 || version_hdr->month > 12)
200 nlmheader_warn (_("illegal month"), -1);
201 if (version_hdr->day < 1 || version_hdr->day > 31)
202 nlmheader_warn (_("illegal day"), -1);
203 if (version_hdr->year < 1900 || version_hdr->year > 3000)
204 nlmheader_warn (_("illegal year"), -1);
210 | DESCRIPTION QUOTED_STRING
215 if (len > NLM_MAX_DESCRIPTION_LENGTH)
217 nlmheader_warn (_("description string is too long"),
218 NLM_MAX_DESCRIPTION_LENGTH);
219 len = NLM_MAX_DESCRIPTION_LENGTH;
221 var_hdr->descriptionLength = len;
222 strncpy (var_hdr->descriptionText, $2, len);
223 var_hdr->descriptionText[len] = '\0';
232 symbol_prefix = NULL;
236 export_symbols = string_list_append (export_symbols, $3);
240 fixed_hdr->flags |= nlmlex_get_number ($2);
245 fixed_hdr->flags &=~ nlmlex_get_number ($2);
264 symbol_prefix = NULL;
268 import_symbols = string_list_append (import_symbols, $3);
272 input_files = string_list_append (input_files, $2);
288 modules = string_list_append (modules, $2);
292 fixed_hdr->flags |= 0x2;
296 fixed_hdr->flags |= 0x10;
300 if (output_file == NULL)
303 nlmheader_warn (_("ignoring duplicate OUTPUT statement"), -1);
307 fixed_hdr->flags |= 0x8;
311 fixed_hdr->flags |= 0x1;
313 | SCREENNAME QUOTED_STRING
318 if (len >= NLM_MAX_SCREEN_NAME_LENGTH)
320 nlmheader_warn (_("screen name is too long"),
321 NLM_MAX_SCREEN_NAME_LENGTH);
322 len = NLM_MAX_SCREEN_NAME_LENGTH;
324 var_hdr->screenNameLength = len;
325 strncpy (var_hdr->screenName, $2, len);
326 var_hdr->screenName[NLM_MAX_SCREEN_NAME_LENGTH] = '\0';
335 var_hdr->stackSize = nlmlex_get_number ($2);
340 start_procedure = $2;
344 fixed_hdr->flags |= 0x4;
346 | THREADNAME QUOTED_STRING
351 if (len >= NLM_MAX_THREAD_NAME_LENGTH)
353 nlmheader_warn (_("thread name is too long"),
354 NLM_MAX_THREAD_NAME_LENGTH);
355 len = NLM_MAX_THREAD_NAME_LENGTH;
357 var_hdr->threadNameLength = len;
358 strncpy (var_hdr->threadName, $2, len);
359 var_hdr->threadName[len] = '\0';
364 fixed_hdr->moduleType = nlmlex_get_number ($2);
371 | VERSIONK STRING STRING STRING
375 strncpy (version_hdr->stamp, "VeRsIoN#", 8);
376 version_hdr->majorVersion = nlmlex_get_number ($2);
377 val = nlmlex_get_number ($3);
378 if (val < 0 || val > 99)
379 nlmheader_warn (_("illegal minor version number (must be between 0 and 99)"),
382 version_hdr->minorVersion = val;
383 val = nlmlex_get_number ($4);
385 nlmheader_warn (_("illegal revision number (must be between 0 and 26)"),
388 version_hdr->revision = 0;
390 version_hdr->revision = val;
395 | VERSIONK STRING STRING
399 strncpy (version_hdr->stamp, "VeRsIoN#", 8);
400 version_hdr->majorVersion = nlmlex_get_number ($2);
401 val = nlmlex_get_number ($3);
402 if (val < 0 || val > 99)
403 nlmheader_warn (_("illegal minor version number (must be between 0 and 99)"),
406 version_hdr->minorVersion = val;
407 version_hdr->revision = 0;
417 /* A possibly empty list of symbols. */
430 /* A list of symbols in an import or export list. Prefixes may appear
431 in parentheses. We need to use left recursion here to avoid
432 building up a large import list on the parser stack. */
437 $$ = string_list_cons ($1, NULL);
445 $$ = string_list_append1 ($1, $2);
447 | symbol_list symbol_prefix
453 /* A prefix for subsequent symbols. */
458 if (symbol_prefix != NULL)
459 free (symbol_prefix);
464 /* A single symbol. */
469 if (symbol_prefix == NULL)
473 $$ = xmalloc (strlen (symbol_prefix) + strlen ($1) + 2);
474 sprintf ($$, "%s@%s", symbol_prefix, $1);
480 /* A list of strings. */
489 $$ = string_list_cons ($1, $2);
495 /* If strerror is just a macro, we want to use the one from libiberty
496 since it will handle undefined values. */
498 extern char *strerror PARAMS ((int));
500 /* The lexer is simple, too simple for flex. Keywords are only
501 recognized at the start of lines. Everything else must be an
502 argument. A comma is treated as whitespace. */
504 /* The states the lexer can be in. */
508 /* At the beginning of a line. */
510 /* In the middle of a line. */
514 /* We need to keep a stack of files to handle file inclusion. */
518 /* The file to read from. */
520 /* The name of the file. */
522 /* The current line number. */
524 /* The current state. */
525 enum lex_state state;
526 /* The next file on the stack. */
530 /* The current input file. */
532 static struct input current;
534 /* The character which introduces comments. */
535 #define COMMENT_CHAR '#'
537 /* Start the lexer going on the main input file. */
544 return nlmlex_file_open (name);
547 /* Start the lexer going on a subsidiary input file. */
550 nlmlex_file_push (name)
555 push = (struct input *) xmalloc (sizeof (struct input));
557 if (nlmlex_file_open (name))
566 /* Start lexing from a file. */
569 nlmlex_file_open (name)
572 current.file = fopen (name, "r");
573 if (current.file == NULL)
575 fprintf (stderr, "%s:%s: %s\n", program_name, name, strerror (errno));
579 current.name = xstrdup (name);
581 current.state = BEGINNING_OF_LINE;
585 /* Table used to turn keywords into tokens. */
587 struct keyword_tokens_struct
593 struct keyword_tokens_struct keyword_tokens[] =
596 { "CODESTART", CODESTART },
597 { "COPYRIGHT", COPYRIGHT },
598 { "CUSTOM", CUSTOM },
601 { "DESCRIPTION", DESCRIPTION },
603 { "EXPORT", EXPORT },
604 { "FLAG_ON", FLAG_ON },
605 { "FLAG_OFF", FLAG_OFF },
606 { "FULLMAP", FULLMAP },
608 { "IMPORT", IMPORT },
611 { "MESSAGES", MESSAGES },
612 { "MODULE", MODULE },
613 { "MULTIPLE", MULTIPLE },
614 { "OS_DOMAIN", OS_DOMAIN },
615 { "OUTPUT", OUTPUT },
616 { "PSEUDOPREEMPTION", PSEUDOPREEMPTION },
617 { "REENTRANT", REENTRANT },
618 { "SCREENNAME", SCREENNAME },
619 { "SHARELIB", SHARELIB },
621 { "STACKSIZE", STACK },
623 { "SYNCHRONIZE", SYNCHRONIZE },
624 { "THREADNAME", THREADNAME },
626 { "VERBOSE", VERBOSE },
627 { "VERSION", VERSIONK },
628 { "XDCDATA", XDCDATA }
631 #define KEYWORD_COUNT (sizeof (keyword_tokens) / sizeof (keyword_tokens[0]))
633 /* The lexer accumulates strings in these variables. */
634 static char *lex_buf;
638 /* Start accumulating strings into the buffer. */
640 ((void) (lex_buf != NULL ? lex_pos = 0 : nlmlex_buf_init ()))
646 lex_buf = xmalloc (lex_size + 1);
651 /* Finish a string in the buffer. */
652 #define BUF_FINISH() ((void) (lex_buf[lex_pos] = '\0'))
654 /* Accumulate a character into the buffer. */
656 ((void) (lex_pos < lex_size \
657 ? lex_buf[lex_pos++] = (c) \
658 : nlmlex_buf_add (c)))
664 if (lex_pos >= lex_size)
667 lex_buf = xrealloc (lex_buf, lex_size + 1);
670 return lex_buf[lex_pos++] = c;
673 /* The lexer proper. This is called by the bison generated parsing
683 c = getc (current.file);
685 /* Commas are treated as whitespace characters. */
686 while (ISSPACE (c) || c == ',')
688 current.state = IN_LINE;
692 current.state = BEGINNING_OF_LINE;
694 c = getc (current.file);
697 /* At the end of the file we either pop to the previous file or
701 fclose (current.file);
703 if (current.next == NULL)
716 /* A comment character always means to drop everything until the
718 if (c == COMMENT_CHAR)
722 c = getc (current.file);
726 current.state = BEGINNING_OF_LINE;
730 /* An '@' introduces an include file. */
735 c = getc (current.file);
741 while (! ISSPACE (c) && c != EOF)
744 c = getc (current.file);
748 ungetc (c, current.file);
750 nlmlex_file_push (lex_buf);
754 /* A non-space character at the start of a line must be the start of
756 if (current.state == BEGINNING_OF_LINE)
759 while (ISALNUM (c) || c == '_')
761 BUF_ADD (TOUPPER (c));
762 c = getc (current.file);
766 if (c != EOF && ! ISSPACE (c) && c != ',')
768 nlmheader_identify ();
769 fprintf (stderr, _("%s:%d: illegal character in keyword: %c\n"),
770 current.name, current.lineno, c);
776 for (i = 0; i < KEYWORD_COUNT; i++)
778 if (lex_buf[0] == keyword_tokens[i].keyword[0]
779 && strcmp (lex_buf, keyword_tokens[i].keyword) == 0)
781 /* Pushing back the final whitespace avoids worrying
783 ungetc (c, current.file);
784 current.state = IN_LINE;
785 return keyword_tokens[i].token;
789 nlmheader_identify ();
790 fprintf (stderr, _("%s:%d: unrecognized keyword: %s\n"),
791 current.name, current.lineno, lex_buf);
795 /* Treat the rest of this line as a comment. */
796 ungetc (COMMENT_CHAR, current.file);
800 /* Parentheses just represent themselves. */
801 if (c == '(' || c == ')')
804 /* Handle quoted strings. */
805 if (c == '"' || c == '\'')
811 start_lineno = current.lineno;
813 c = getc (current.file);
815 while (c != quote && c != EOF)
820 c = getc (current.file);
826 nlmheader_identify ();
827 fprintf (stderr, _("%s:%d: end of file in quoted string\n"),
828 current.name, start_lineno);
832 /* FIXME: Possible memory leak. */
833 yylval.string = xstrdup (lex_buf);
834 return QUOTED_STRING;
837 /* Gather a generic argument. */
846 c = getc (current.file);
850 ungetc (c, current.file);
852 /* FIXME: Possible memory leak. */
853 yylval.string = xstrdup (lex_buf);
857 /* Get a number from a string. */
860 nlmlex_get_number (s)
866 ret = strtol (s, &send, 10);
868 nlmheader_warn (_("bad number"), -1);
872 /* Prefix the nlmconv warnings with a note as to where they come from.
873 We don't use program_name on every warning, because then some
874 versions of the emacs next-error function can't recognize the line
878 nlmheader_identify ()
884 fprintf (stderr, _("%s: problems in NLM command language input:\n"),
890 /* Issue a warning. */
893 nlmheader_warn (s, imax)
897 nlmheader_identify ();
898 fprintf (stderr, "%s:%d: %s", current.name, current.lineno, s);
900 fprintf (stderr, " (max %d)", imax);
901 fprintf (stderr, "\n");
904 /* Report an error. */
910 nlmheader_warn (s, -1);
914 /* Add a string to a string list. */
916 static struct string_list *
917 string_list_cons (s, l)
919 struct string_list *l;
921 struct string_list *ret;
923 ret = (struct string_list *) xmalloc (sizeof (struct string_list));
929 /* Append a string list to another string list. */
931 static struct string_list *
932 string_list_append (l1, l2)
933 struct string_list *l1;
934 struct string_list *l2;
936 register struct string_list **pp;
938 for (pp = &l1; *pp != NULL; pp = &(*pp)->next)
944 /* Append a string to a string list. */
946 static struct string_list *
947 string_list_append1 (l, s)
948 struct string_list *l;
951 struct string_list *n;
952 register struct string_list **pp;
954 n = (struct string_list *) xmalloc (sizeof (struct string_list));
957 for (pp = &l; *pp != NULL; pp = &(*pp)->next)
963 /* Duplicate a string in memory. */
973 ret = xmalloc (len + 1);