%{ /* deffilep.y - parser for .def files */ /* Copyright 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ #include <stdio.h> #include "libiberty.h" #include "safe-ctype.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 void def_description (const char *); static void def_exports (const char *, const char *, int, int); static void def_heapsize (int, int); static void def_import (const char *, const char *, const char *, const char *, int); static void def_image_name (const char *, int, int); static void def_section (const char *, int); static void def_section_alt (const char *, const char *); static void def_stacksize (int, int); static void def_version (int, int); static void def_directive (char *); static int def_parse (void); static int def_error (const char *); static int def_lex (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 dot_name %% start: start command | command ; command: NAME opt_name opt_base { def_image_name ($2, $3, 0); } | LIBRARY opt_name opt_base { def_image_name ($2, $3, 1); } | 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>. */ dot_name 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;} | { $$ = -1;} ; opt_equal_name: '=' dot_name { $$ = $2; } | { $$ = 0; } ; opt_base: BASE '=' NUMBER { $$ = $3;} | { $$ = -1;} ; dot_name: ID { $$ = $1; } | dot_name '.' ID { char *name = xmalloc (strlen ($1) + 1 + strlen ($3) + 1); sprintf (name, "%s.%s", $1, $3); $$ = name; } ; %% /***************************************************************************** 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 (void) { def_file *rv = 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 (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_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 *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_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 = xrealloc (def->exports, max_exports * sizeof (def_file_export)); else def->exports = 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; } def_file_module * def_get_module (def_file *def, const char *name) { def_file_module *s; for (s = def->modules; s; s = s->next) if (strcmp (s->name, name) == 0) return s; return NULL; } static def_file_module * def_stash_module (def_file *def, const char *name) { def_file_module *s; if ((s = def_get_module (def, name)) != NULL) return s; s = 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_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 = xrealloc (def->imports, max_imports * sizeof (def_file_import)); else def->imports = 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 (def_file *my_def, const char *param, int len) { def_file *save_def = def; const char *pend = param + len; char * tend = (char *) param; int i; def = my_def; while (param < pend) { while (param < pend && (ISSPACE (*param) || *param == '\n' || *param == 0)) param++; if (param == pend) break; /* Scan forward until we encounter any of: - the end of the buffer - the start of a new option - a newline seperating options - a NUL seperating options. */ for (tend = (char *) (param + 1); (tend < pend && !(ISSPACE (tend[-1]) && *tend == '-') && *tend != '\n' && *tend != 0); 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; if (def_parse ()) continue; break; } } if (!diropts[i].param) { char saved; saved = * tend; * tend = 0; /* xgettext:c-format */ einfo (_("Warning: .drectve `%s' unrecognized\n"), param); * tend = saved; } lex_parse_string = 0; param = tend; } def = save_def; } /* Parser Callbacks. */ static void def_image_name (const char *name, int base, int is_dll) { /* If a LIBRARY or NAME statement is specified without a name, there is nothing to do here. We retain the output filename specified on command line. */ if (*name) { const char* image_name = lbasename (name); if (image_name != name) einfo ("%s:%d: Warning: path components stripped from %s, '%s'\n", def_filename, linenumber, is_dll ? "LIBRARY" : "NAME", name); if (def->name) free (def->name); /* Append the default suffix, if none specified. */ if (strchr (image_name, '.') == 0) { const char * suffix = is_dll ? ".dll" : ".exe"; def->name = xmalloc (strlen (image_name) + strlen (suffix) + 1); sprintf (def->name, "%s%s", image_name, suffix); } else def->name = xstrdup (image_name); } /* Honor a BASE address statement, even if LIBRARY string is empty. */ def->base_address = base; def->is_dll = is_dll; } static void def_description (const char *text) { int len = def->description ? strlen (def->description) : 0; len += strlen (text) + 1; if (def->description) { def->description = xrealloc (def->description, len); strcat (def->description, text); } else { def->description = xmalloc (len); strcpy (def->description, text); } } static void def_stacksize (int reserve, int commit) { def->stack_reserve = reserve; def->stack_commit = commit; } static void def_heapsize (int reserve, int commit) { def->heap_reserve = reserve; def->heap_commit = commit; } static void def_section (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 = xrealloc (def->section_defs, max_sections * sizeof (def_file_import)); else def->section_defs = 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 (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 (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 (const char *internal_name, const char *module, const char *dllext, const char *name, int ordinal) { char *buf = 0; const char *ext = dllext ? dllext : "dll"; buf = xmalloc (strlen (module) + strlen (ext) + 2); sprintf (buf, "%s.%s", module, ext); module = buf; def_file_add_import (def, name, module, ordinal, internal_name); if (buf) free (buf); } static void def_version (int major, int minor) { def->version_major = major; def->version_minor = minor; } static void def_directive (char *str) { struct directive *d = xmalloc (sizeof (struct directive)); d->next = directives; directives = d; d->name = xstrdup (str); d->len = strlen (str); } static int def_error (const char *err) { einfo ("%P: %s:%d: %s\n", def_filename ? def_filename : "<unknown-file>", 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 (char c) { if (bufptr == buflen) { buflen += 50; /* overly reasonable, eh? */ if (buffer) buffer = xrealloc (buffer, buflen + 1); else buffer = 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 (void) { 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 (int c) { if (lex_parse_string) { lex_parse_string--; return c; } else return ungetc (c, the_file); } static int def_lex (void) { 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 ("$:-_?@", c)) { bufptr = 0; q = c; put_buf (c); c = def_getc (); if (q == '@') { if (ISBLANK (c) ) /* '@' followed by whitespace. */ return (q); else if (ISDIGIT (c)) /* '@' followed by digit. */ { def_ungetc (c); return (q); } #if TRACE printf ("lex: @ returns itself\n"); #endif } while (c != EOF && (ISALNUM (c) || strchr ("$:-_?/@", c))) { put_buf (c); c = def_getc (); } if (c != EOF) def_ungetc (c); if (ISALPHA (q)) /* Check for tokens. */ { 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 == ',') { #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 (); }