| %{ /* deffilep.y - parser for .def files */ |
| |
| /* Copyright 1995, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
| |
| This file is part of GNU Binutils. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include <stdio.h> |
| #include <ctype.h> |
| #include "libiberty.h" |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "ld.h" |
| #include "ldmisc.h" |
| #include "deffile.h" |
| |
| #define TRACE 0 |
| |
| #define ROUND_UP(a, b) (((a)+((b)-1))&~((b)-1)) |
| |
| /* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc), |
| as well as gratuitiously global symbol names, so we can have multiple |
| yacc generated parsers in ld. Note that these are only the variables |
| produced by yacc. If other parser generators (bison, byacc, etc) produce |
| additional global names that conflict at link time, then those parser |
| generators need to be fixed instead of adding those names to this list. */ |
| |
| #define yymaxdepth def_maxdepth |
| #define yyparse def_parse |
| #define yylex def_lex |
| #define yyerror def_error |
| #define yylval def_lval |
| #define yychar def_char |
| #define yydebug def_debug |
| #define yypact def_pact |
| #define yyr1 def_r1 |
| #define yyr2 def_r2 |
| #define yydef def_def |
| #define yychk def_chk |
| #define yypgo def_pgo |
| #define yyact def_act |
| #define yyexca def_exca |
| #define yyerrflag def_errflag |
| #define yynerrs def_nerrs |
| #define yyps def_ps |
| #define yypv def_pv |
| #define yys def_s |
| #define yy_yys def_yys |
| #define yystate def_state |
| #define yytmp def_tmp |
| #define yyv def_v |
| #define yy_yyv def_yyv |
| #define yyval def_val |
| #define yylloc def_lloc |
| #define yyreds def_reds /* With YYDEBUG defined */ |
| #define yytoks def_toks /* With YYDEBUG defined */ |
| #define yylhs def_yylhs |
| #define yylen def_yylen |
| #define yydefred def_yydefred |
| #define yydgoto def_yydgoto |
| #define yysindex def_yysindex |
| #define yyrindex def_yyrindex |
| #define yygindex def_yygindex |
| #define yytable def_yytable |
| #define yycheck def_yycheck |
| |
| static int def_lex (); |
| |
| static void def_description PARAMS ((const char *)); |
| static void def_exports PARAMS ((const char *, const char *, int, int)); |
| static void def_heapsize PARAMS ((int, int)); |
| static void def_import |
| PARAMS ((const char *, const char *, const char *, const char *, int)); |
| static void def_library PARAMS ((const char *, int)); |
| static void def_name PARAMS ((const char *, int)); |
| static void def_section PARAMS ((const char *, int)); |
| static void def_section_alt PARAMS ((const char *, const char *)); |
| static void def_stacksize PARAMS ((int, int)); |
| static void def_version PARAMS ((int, int)); |
| static void def_directive PARAMS ((char *)); |
| static int def_parse PARAMS ((void)); |
| static int def_error PARAMS ((const char *)); |
| static int def_lex PARAMS ((void)); |
| |
| static int lex_forced_token = 0; |
| static const char *lex_parse_string = 0; |
| static const char *lex_parse_string_end = 0; |
| |
| %} |
| |
| %union { |
| char *id; |
| int number; |
| }; |
| |
| %token NAME, LIBRARY, DESCRIPTION, STACKSIZE, HEAPSIZE, CODE, DATAU, DATAL |
| %token SECTIONS, EXPORTS, IMPORTS, VERSIONK, BASE, CONSTANTU, CONSTANTL |
| %token PRIVATEU, PRIVATEL |
| %token READ WRITE EXECUTE SHARED NONAMEU NONAMEL DIRECTIVE |
| %token <id> ID |
| %token <number> NUMBER |
| %type <number> opt_base opt_ordinal |
| %type <number> attr attr_list opt_number exp_opt_list exp_opt |
| %type <id> opt_name opt_equal_name |
| |
| %% |
| |
| start: start command |
| | command |
| ; |
| |
| command: |
| NAME opt_name opt_base { def_name ($2, $3); } |
| | LIBRARY opt_name opt_base { def_library ($2, $3); } |
| | DESCRIPTION ID { def_description ($2);} |
| | STACKSIZE NUMBER opt_number { def_stacksize ($2, $3);} |
| | HEAPSIZE NUMBER opt_number { def_heapsize ($2, $3);} |
| | CODE attr_list { def_section ("CODE", $2);} |
| | DATAU attr_list { def_section ("DATA", $2);} |
| | SECTIONS seclist |
| | EXPORTS explist |
| | IMPORTS implist |
| | VERSIONK NUMBER { def_version ($2, 0);} |
| | VERSIONK NUMBER '.' NUMBER { def_version ($2, $4);} |
| | DIRECTIVE ID { def_directive ($2);} |
| ; |
| |
| |
| explist: |
| /* EMPTY */ |
| | expline |
| | explist expline |
| ; |
| |
| expline: |
| /* The opt_comma is necessary to support both the usual |
| DEF file syntax as well as .drectve syntax which |
| mandates <expsym>,<expoptlist>. */ |
| ID opt_equal_name opt_ordinal opt_comma exp_opt_list |
| { def_exports ($1, $2, $3, $5); } |
| ; |
| exp_opt_list: |
| /* The opt_comma is necessary to support both the usual |
| DEF file syntax as well as .drectve syntax which |
| allows for comma separated opt list. */ |
| exp_opt opt_comma exp_opt_list { $$ = $1 | $3; } |
| | { $$ = 0; } |
| ; |
| exp_opt: |
| NONAMEU { $$ = 1; } |
| | NONAMEL { $$ = 1; } |
| | CONSTANTU { $$ = 2; } |
| | CONSTANTL { $$ = 2; } |
| | DATAU { $$ = 4; } |
| | DATAL { $$ = 4; } |
| | PRIVATEU { $$ = 8; } |
| | PRIVATEL { $$ = 8; } |
| ; |
| implist: |
| implist impline |
| | impline |
| ; |
| |
| impline: |
| ID '=' ID '.' ID '.' ID { def_import ($1, $3, $5, $7, -1); } |
| | ID '=' ID '.' ID '.' NUMBER { def_import ($1, $3, $5, 0, $7); } |
| | ID '=' ID '.' ID { def_import ($1, $3, 0, $5, -1); } |
| | ID '=' ID '.' NUMBER { def_import ($1, $3, 0, 0, $5); } |
| | ID '.' ID '.' ID { def_import ( 0, $1, $3, $5, -1); } |
| | ID '.' ID { def_import ( 0, $1, 0, $3, -1); } |
| ; |
| |
| seclist: |
| seclist secline |
| | secline |
| ; |
| |
| secline: |
| ID attr_list { def_section ($1, $2);} |
| | ID ID { def_section_alt ($1, $2);} |
| ; |
| |
| attr_list: |
| attr_list opt_comma attr { $$ = $1 | $3; } |
| | attr { $$ = $1; } |
| ; |
| |
| opt_comma: |
| ',' |
| | |
| ; |
| opt_number: ',' NUMBER { $$=$2;} |
| | { $$=-1;} |
| ; |
| |
| attr: |
| READ { $$ = 1;} |
| | WRITE { $$ = 2;} |
| | EXECUTE { $$=4;} |
| | SHARED { $$=8;} |
| ; |
| |
| opt_name: ID { $$ = $1; } |
| | ID '.' ID |
| { |
| char * name = xmalloc (strlen ($1) + 1 + strlen ($3) + 1); |
| sprintf (name, "%s.%s", $1, $3); |
| $$ = name; |
| } |
| | { $$ = ""; } |
| ; |
| |
| opt_ordinal: |
| '@' NUMBER { $$ = $2;} |
| | { $$ = -1;} |
| ; |
| |
| opt_equal_name: |
| '=' ID { $$ = $2; } |
| | { $$ = 0; } |
| ; |
| |
| opt_base: BASE '=' NUMBER { $$ = $3;} |
| | { $$ = 0;} |
| ; |
| |
| |
| |
| %% |
| |
| /***************************************************************************** |
| API |
| *****************************************************************************/ |
| |
| static FILE *the_file; |
| static const char *def_filename; |
| static int linenumber; |
| static def_file *def; |
| static int saw_newline; |
| |
| struct directive |
| { |
| struct directive *next; |
| char *name; |
| int len; |
| }; |
| |
| static struct directive *directives = 0; |
| |
| def_file * |
| def_file_empty () |
| { |
| def_file *rv = (def_file *) xmalloc (sizeof (def_file)); |
| memset (rv, 0, sizeof (def_file)); |
| rv->is_dll = -1; |
| rv->base_address = (bfd_vma) (-1); |
| rv->stack_reserve = rv->stack_commit = -1; |
| rv->heap_reserve = rv->heap_commit = -1; |
| rv->version_major = rv->version_minor = -1; |
| return rv; |
| } |
| |
| def_file * |
| def_file_parse (filename, add_to) |
| const char *filename; |
| def_file *add_to; |
| { |
| struct directive *d; |
| |
| the_file = fopen (filename, "r"); |
| def_filename = filename; |
| linenumber = 1; |
| if (!the_file) |
| { |
| perror (filename); |
| return 0; |
| } |
| if (add_to) |
| { |
| def = add_to; |
| } |
| else |
| { |
| def = def_file_empty (); |
| } |
| |
| saw_newline = 1; |
| if (def_parse ()) |
| { |
| def_file_free (def); |
| fclose (the_file); |
| return 0; |
| } |
| |
| fclose (the_file); |
| |
| for (d = directives; d; d = d->next) |
| { |
| #if TRACE |
| printf ("Adding directive %08x `%s'\n", d->name, d->name); |
| #endif |
| def_file_add_directive (def, d->name, d->len); |
| } |
| |
| return def; |
| } |
| |
| void |
| def_file_free (def) |
| def_file *def; |
| { |
| int i; |
| if (!def) |
| return; |
| if (def->name) |
| free (def->name); |
| if (def->description) |
| free (def->description); |
| |
| if (def->section_defs) |
| { |
| for (i = 0; i < def->num_section_defs; i++) |
| { |
| if (def->section_defs[i].name) |
| free (def->section_defs[i].name); |
| if (def->section_defs[i].class) |
| free (def->section_defs[i].class); |
| } |
| free (def->section_defs); |
| } |
| |
| if (def->exports) |
| { |
| for (i = 0; i < def->num_exports; i++) |
| { |
| if (def->exports[i].internal_name |
| && def->exports[i].internal_name != def->exports[i].name) |
| free (def->exports[i].internal_name); |
| if (def->exports[i].name) |
| free (def->exports[i].name); |
| } |
| free (def->exports); |
| } |
| |
| if (def->imports) |
| { |
| for (i = 0; i < def->num_imports; i++) |
| { |
| if (def->imports[i].internal_name |
| && def->imports[i].internal_name != def->imports[i].name) |
| free (def->imports[i].internal_name); |
| if (def->imports[i].name) |
| free (def->imports[i].name); |
| } |
| free (def->imports); |
| } |
| |
| while (def->modules) |
| { |
| def_file_module *m = def->modules; |
| def->modules = def->modules->next; |
| free (m); |
| } |
| |
| free (def); |
| } |
| |
| #ifdef DEF_FILE_PRINT |
| void |
| def_file_print (file, def) |
| FILE *file; |
| def_file *def; |
| { |
| int i; |
| fprintf (file, ">>>> def_file at 0x%08x\n", def); |
| if (def->name) |
| fprintf (file, " name: %s\n", def->name ? def->name : "(unspecified)"); |
| if (def->is_dll != -1) |
| fprintf (file, " is dll: %s\n", def->is_dll ? "yes" : "no"); |
| if (def->base_address != (bfd_vma) (-1)) |
| fprintf (file, " base address: 0x%08x\n", def->base_address); |
| if (def->description) |
| fprintf (file, " description: `%s'\n", def->description); |
| if (def->stack_reserve != -1) |
| fprintf (file, " stack reserve: 0x%08x\n", def->stack_reserve); |
| if (def->stack_commit != -1) |
| fprintf (file, " stack commit: 0x%08x\n", def->stack_commit); |
| if (def->heap_reserve != -1) |
| fprintf (file, " heap reserve: 0x%08x\n", def->heap_reserve); |
| if (def->heap_commit != -1) |
| fprintf (file, " heap commit: 0x%08x\n", def->heap_commit); |
| |
| if (def->num_section_defs > 0) |
| { |
| fprintf (file, " section defs:\n"); |
| for (i = 0; i < def->num_section_defs; i++) |
| { |
| fprintf (file, " name: `%s', class: `%s', flags:", |
| def->section_defs[i].name, def->section_defs[i].class); |
| if (def->section_defs[i].flag_read) |
| fprintf (file, " R"); |
| if (def->section_defs[i].flag_write) |
| fprintf (file, " W"); |
| if (def->section_defs[i].flag_execute) |
| fprintf (file, " X"); |
| if (def->section_defs[i].flag_shared) |
| fprintf (file, " S"); |
| fprintf (file, "\n"); |
| } |
| } |
| |
| if (def->num_exports > 0) |
| { |
| fprintf (file, " exports:\n"); |
| for (i = 0; i < def->num_exports; i++) |
| { |
| fprintf (file, " name: `%s', int: `%s', ordinal: %d, flags:", |
| def->exports[i].name, def->exports[i].internal_name, |
| def->exports[i].ordinal); |
| if (def->exports[i].flag_private) |
| fprintf (file, " P"); |
| if (def->exports[i].flag_constant) |
| fprintf (file, " C"); |
| if (def->exports[i].flag_noname) |
| fprintf (file, " N"); |
| if (def->exports[i].flag_data) |
| fprintf (file, " D"); |
| fprintf (file, "\n"); |
| } |
| } |
| |
| if (def->num_imports > 0) |
| { |
| fprintf (file, " imports:\n"); |
| for (i = 0; i < def->num_imports; i++) |
| { |
| fprintf (file, " int: %s, from: `%s', name: `%s', ordinal: %d\n", |
| def->imports[i].internal_name, |
| def->imports[i].module, |
| def->imports[i].name, |
| def->imports[i].ordinal); |
| } |
| } |
| if (def->version_major != -1) |
| fprintf (file, " version: %d.%d\n", def->version_major, def->version_minor); |
| fprintf (file, "<<<< def_file at 0x%08x\n", def); |
| } |
| #endif |
| |
| def_file_export * |
| def_file_add_export (def, external_name, internal_name, ordinal) |
| def_file *def; |
| const char *external_name; |
| const char *internal_name; |
| int ordinal; |
| { |
| def_file_export *e; |
| int max_exports = ROUND_UP(def->num_exports, 32); |
| if (def->num_exports >= max_exports) |
| { |
| max_exports = ROUND_UP(def->num_exports+1, 32); |
| if (def->exports) |
| def->exports = (def_file_export *) xrealloc (def->exports, max_exports * sizeof (def_file_export)); |
| else |
| def->exports = (def_file_export *) xmalloc (max_exports * sizeof (def_file_export)); |
| } |
| e = def->exports + def->num_exports; |
| memset (e, 0, sizeof (def_file_export)); |
| if (internal_name && !external_name) |
| external_name = internal_name; |
| if (external_name && !internal_name) |
| internal_name = external_name; |
| e->name = xstrdup (external_name); |
| e->internal_name = xstrdup (internal_name); |
| e->ordinal = ordinal; |
| def->num_exports++; |
| return e; |
| } |
| |
| static def_file_module * |
| def_stash_module (def, name) |
| def_file *def; |
| char *name; |
| { |
| def_file_module *s; |
| for (s=def->modules; s; s=s->next) |
| if (strcmp (s->name, name) == 0) |
| return s; |
| s = (def_file_module *) xmalloc (sizeof (def_file_module) + strlen (name)); |
| s->next = def->modules; |
| def->modules = s; |
| s->user_data = 0; |
| strcpy (s->name, name); |
| return s; |
| } |
| |
| def_file_import * |
| def_file_add_import (def, name, module, ordinal, internal_name) |
| def_file *def; |
| const char *name; |
| const char *module; |
| int ordinal; |
| const char *internal_name; |
| { |
| def_file_import *i; |
| int max_imports = ROUND_UP(def->num_imports, 16); |
| if (def->num_imports >= max_imports) |
| { |
| max_imports = ROUND_UP(def->num_imports+1, 16); |
| if (def->imports) |
| def->imports = (def_file_import *) xrealloc (def->imports, max_imports * sizeof (def_file_import)); |
| else |
| def->imports = (def_file_import *) xmalloc (max_imports * sizeof (def_file_import)); |
| } |
| i = def->imports + def->num_imports; |
| memset (i, 0, sizeof (def_file_import)); |
| if (name) |
| i->name = xstrdup (name); |
| if (module) |
| i->module = def_stash_module(def, module); |
| i->ordinal = ordinal; |
| if (internal_name) |
| i->internal_name = xstrdup (internal_name); |
| else |
| i->internal_name = i->name; |
| def->num_imports++; |
| return i; |
| } |
| |
| struct |
| { |
| char *param; |
| int token; |
| } |
| diropts[] = |
| { |
| { "-heap", HEAPSIZE }, |
| { "-stack", STACKSIZE }, |
| { "-attr", SECTIONS }, |
| { "-export", EXPORTS }, |
| { 0, 0 } |
| }; |
| |
| void |
| def_file_add_directive (my_def, param, len) |
| def_file *my_def; |
| const char *param; |
| int len; |
| { |
| def_file *save_def = def; |
| const char *pend = param + len; |
| const char *tend = param; |
| int i; |
| |
| def = my_def; |
| |
| while (param < pend) |
| { |
| while (param < pend && isspace (*param)) |
| param++; |
| for (tend = param + 1; |
| tend < pend && !(isspace (tend[-1]) && *tend == '-'); |
| tend++); |
| |
| for (i = 0; diropts[i].param; i++) |
| { |
| int len = strlen (diropts[i].param); |
| if (tend - param >= len |
| && strncmp (param, diropts[i].param, len) == 0 |
| && (param[len] == ':' || param[len] == ' ')) |
| { |
| lex_parse_string_end = tend; |
| lex_parse_string = param + len + 1; |
| lex_forced_token = diropts[i].token; |
| saw_newline = 0; |
| def_parse (); |
| break; |
| } |
| } |
| |
| if (!diropts[i].param) |
| { |
| /* xgettext:c-format */ |
| einfo (_("Warning: .drectve `%.*s' unrecognized\n"), |
| tend - param, param); |
| } |
| lex_parse_string = 0; |
| param = tend; |
| } |
| |
| def = save_def; |
| } |
| |
| /***************************************************************************** |
| Parser Callbacks |
| *****************************************************************************/ |
| |
| static void |
| def_name (name, base) |
| const char *name; |
| int base; |
| { |
| if (def->name) |
| free (def->name); |
| def->name = xstrdup (name); |
| def->base_address = base; |
| def->is_dll = 0; |
| } |
| |
| static void |
| def_library (name, base) |
| const char *name; |
| int base; |
| { |
| if (def->name) |
| free (def->name); |
| def->name = xstrdup (name); |
| def->base_address = base; |
| def->is_dll = 1; |
| } |
| |
| static void |
| def_description (text) |
| const char *text; |
| { |
| int len = def->description ? strlen (def->description) : 0; |
| len += strlen (text) + 1; |
| if (def->description) |
| { |
| def->description = (char *) xrealloc (def->description, len); |
| strcat (def->description, text); |
| } |
| else |
| { |
| def->description = (char *) xmalloc (len); |
| strcpy (def->description, text); |
| } |
| } |
| |
| static void |
| def_stacksize (reserve, commit) |
| int reserve; |
| int commit; |
| { |
| def->stack_reserve = reserve; |
| def->stack_commit = commit; |
| } |
| |
| static void |
| def_heapsize (reserve, commit) |
| int reserve; |
| int commit; |
| { |
| def->heap_reserve = reserve; |
| def->heap_commit = commit; |
| } |
| |
| static void |
| def_section (name, attr) |
| const char *name; |
| int attr; |
| { |
| def_file_section *s; |
| int max_sections = ROUND_UP(def->num_section_defs, 4); |
| if (def->num_section_defs >= max_sections) |
| { |
| max_sections = ROUND_UP(def->num_section_defs+1, 4); |
| if (def->section_defs) |
| def->section_defs = (def_file_section *) xrealloc (def->section_defs, max_sections * sizeof (def_file_import)); |
| else |
| def->section_defs = (def_file_section *) xmalloc (max_sections * sizeof (def_file_import)); |
| } |
| s = def->section_defs + def->num_section_defs; |
| memset (s, 0, sizeof (def_file_section)); |
| s->name = xstrdup (name); |
| if (attr & 1) |
| s->flag_read = 1; |
| if (attr & 2) |
| s->flag_write = 1; |
| if (attr & 4) |
| s->flag_execute = 1; |
| if (attr & 8) |
| s->flag_shared = 1; |
| |
| def->num_section_defs++; |
| } |
| |
| static void |
| def_section_alt (name, attr) |
| const char *name; |
| const char *attr; |
| { |
| int aval = 0; |
| for (; *attr; attr++) |
| { |
| switch (*attr) |
| { |
| case 'R': |
| case 'r': |
| aval |= 1; |
| break; |
| case 'W': |
| case 'w': |
| aval |= 2; |
| break; |
| case 'X': |
| case 'x': |
| aval |= 4; |
| break; |
| case 'S': |
| case 's': |
| aval |= 8; |
| break; |
| } |
| } |
| def_section (name, aval); |
| } |
| |
| static void |
| def_exports (external_name, internal_name, ordinal, flags) |
| const char *external_name; |
| const char *internal_name; |
| int ordinal; |
| int flags; |
| { |
| def_file_export *dfe; |
| |
| if (!internal_name && external_name) |
| internal_name = external_name; |
| #if TRACE |
| printf ("def_exports, ext=%s int=%s\n", external_name, internal_name); |
| #endif |
| |
| dfe = def_file_add_export (def, external_name, internal_name, ordinal); |
| if (flags & 1) |
| dfe->flag_noname = 1; |
| if (flags & 2) |
| dfe->flag_constant = 1; |
| if (flags & 4) |
| dfe->flag_data = 1; |
| if (flags & 8) |
| dfe->flag_private = 1; |
| } |
| |
| static void |
| def_import (internal_name, module, dllext, name, ordinal) |
| const char *internal_name; |
| const char *module; |
| const char *dllext; |
| const char *name; |
| int ordinal; |
| { |
| char *buf = 0; |
| |
| if (dllext != NULL) |
| { |
| buf = (char *) xmalloc (strlen (module) + strlen (dllext) + 2); |
| sprintf (buf, "%s.%s", module, dllext); |
| module = buf; |
| } |
| |
| def_file_add_import (def, name, module, ordinal, internal_name); |
| if (buf) |
| free (buf); |
| } |
| |
| static void |
| def_version (major, minor) |
| int major; |
| int minor; |
| { |
| def->version_major = major; |
| def->version_minor = minor; |
| } |
| |
| static void |
| def_directive (str) |
| char *str; |
| { |
| struct directive *d = (struct directive *) xmalloc (sizeof (struct directive)); |
| d->next = directives; |
| directives = d; |
| d->name = xstrdup (str); |
| d->len = strlen (str); |
| } |
| |
| static int |
| def_error (err) |
| const char *err; |
| { |
| einfo ("%P: %s:%d: %s\n", def_filename, linenumber, err); |
| |
| return 0; |
| } |
| |
| |
| /***************************************************************************** |
| Lexical Scanner |
| *****************************************************************************/ |
| |
| #undef TRACE |
| #define TRACE 0 |
| |
| /* Never freed, but always reused as needed, so no real leak */ |
| static char *buffer = 0; |
| static int buflen = 0; |
| static int bufptr = 0; |
| |
| static void |
| put_buf (c) |
| char c; |
| { |
| if (bufptr == buflen) |
| { |
| buflen += 50; /* overly reasonable, eh? */ |
| if (buffer) |
| buffer = (char *) xrealloc (buffer, buflen + 1); |
| else |
| buffer = (char *) xmalloc (buflen + 1); |
| } |
| buffer[bufptr++] = c; |
| buffer[bufptr] = 0; /* not optimal, but very convenient */ |
| } |
| |
| static struct |
| { |
| char *name; |
| int token; |
| } |
| tokens[] = |
| { |
| { "BASE", BASE }, |
| { "CODE", CODE }, |
| { "CONSTANT", CONSTANTU }, |
| { "constant", CONSTANTL }, |
| { "DATA", DATAU }, |
| { "data", DATAL }, |
| { "DESCRIPTION", DESCRIPTION }, |
| { "DIRECTIVE", DIRECTIVE }, |
| { "EXECUTE", EXECUTE }, |
| { "EXPORTS", EXPORTS }, |
| { "HEAPSIZE", HEAPSIZE }, |
| { "IMPORTS", IMPORTS }, |
| { "LIBRARY", LIBRARY }, |
| { "NAME", NAME }, |
| { "NONAME", NONAMEU }, |
| { "noname", NONAMEL }, |
| { "PRIVATE", PRIVATEU }, |
| { "private", PRIVATEL }, |
| { "READ", READ }, |
| { "SECTIONS", SECTIONS }, |
| { "SEGMENTS", SECTIONS }, |
| { "SHARED", SHARED }, |
| { "STACKSIZE", STACKSIZE }, |
| { "VERSION", VERSIONK }, |
| { "WRITE", WRITE }, |
| { 0, 0 } |
| }; |
| |
| static int |
| def_getc () |
| { |
| int rv; |
| if (lex_parse_string) |
| { |
| if (lex_parse_string >= lex_parse_string_end) |
| rv = EOF; |
| else |
| rv = *lex_parse_string++; |
| } |
| else |
| { |
| rv = fgetc (the_file); |
| } |
| if (rv == '\n') |
| saw_newline = 1; |
| return rv; |
| } |
| |
| static int |
| def_ungetc (c) |
| int c; |
| { |
| if (lex_parse_string) |
| { |
| lex_parse_string--; |
| return c; |
| } |
| else |
| return ungetc (c, the_file); |
| } |
| |
| static int |
| def_lex () |
| { |
| int c, i, q; |
| |
| if (lex_forced_token) |
| { |
| i = lex_forced_token; |
| lex_forced_token = 0; |
| #if TRACE |
| printf ("lex: forcing token %d\n", i); |
| #endif |
| return i; |
| } |
| |
| c = def_getc (); |
| |
| /* trim leading whitespace */ |
| while (c != EOF && (c == ' ' || c == '\t') && saw_newline) |
| c = def_getc (); |
| |
| if (c == EOF) |
| { |
| #if TRACE |
| printf ("lex: EOF\n"); |
| #endif |
| return 0; |
| } |
| |
| if (saw_newline && c == ';') |
| { |
| do |
| { |
| c = def_getc (); |
| } |
| while (c != EOF && c != '\n'); |
| if (c == '\n') |
| return def_lex (); |
| return 0; |
| } |
| /* must be something else */ |
| saw_newline = 0; |
| |
| if (isdigit (c)) |
| { |
| bufptr = 0; |
| while (c != EOF && (isxdigit (c) || (c == 'x'))) |
| { |
| put_buf (c); |
| c = def_getc (); |
| } |
| if (c != EOF) |
| def_ungetc (c); |
| yylval.number = strtoul (buffer, 0, 0); |
| #if TRACE |
| printf ("lex: `%s' returns NUMBER %d\n", buffer, yylval.number); |
| #endif |
| return NUMBER; |
| } |
| |
| if (isalpha (c) || strchr ("$:-_?", c)) |
| { |
| bufptr = 0; |
| while (c != EOF && (isalnum (c) || strchr ("$:-_?/@", c))) |
| { |
| put_buf (c); |
| c = def_getc (); |
| } |
| if (c != EOF) |
| def_ungetc (c); |
| for (i = 0; tokens[i].name; i++) |
| if (strcmp (tokens[i].name, buffer) == 0) |
| { |
| #if TRACE |
| printf ("lex: `%s' is a string token\n", buffer); |
| #endif |
| return tokens[i].token; |
| } |
| #if TRACE |
| printf ("lex: `%s' returns ID\n", buffer); |
| #endif |
| yylval.id = xstrdup (buffer); |
| return ID; |
| } |
| |
| if (c == '\'' || c == '"') |
| { |
| q = c; |
| c = def_getc (); |
| bufptr = 0; |
| while (c != EOF && c != q) |
| { |
| put_buf (c); |
| c = def_getc (); |
| } |
| yylval.id = xstrdup (buffer); |
| #if TRACE |
| printf ("lex: `%s' returns ID\n", buffer); |
| #endif |
| return ID; |
| } |
| |
| if (c == '=' || c == '.' || c == '@' || c == ',') |
| { |
| #if TRACE |
| printf ("lex: `%c' returns itself\n", c); |
| #endif |
| return c; |
| } |
| |
| if (c == '\n') |
| { |
| linenumber++; |
| saw_newline = 1; |
| } |
| |
| /*printf ("lex: 0x%02x ignored\n", c); */ |
| return def_lex (); |
| } |