%{ /* deffilep.y - parser for .def files */ /* Copyright (C) 1995-2020 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 3 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 "sysdep.h" #include "libiberty.h" #include "safe-ctype.h" #include "bfd.h" #include "bfdlink.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 typedef struct def_pool_str { struct def_pool_str *next; char data[1]; } def_pool_str; static def_pool_str *pool_strs = NULL; static char *def_pool_alloc (size_t sz); static char *def_pool_strdup (const char *str); static void def_pool_free (void); static void def_description (const char *); static void def_exports (const char *, const char *, int, int, const char *); static void def_heapsize (int, int); static void def_import (const char *, const char *, const char *, const char *, int, const char *); static void def_image_name (const char *, bfd_vma, 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 void def_aligncomm (char *str, int align); 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; const char *id_const; int number; bfd_vma vma; char *digits; }; %token NAME LIBRARY DESCRIPTION STACKSIZE_K HEAPSIZE CODE DATAU DATAL %token SECTIONS EXPORTS IMPORTS VERSIONK BASE CONSTANTU CONSTANTL %token PRIVATEU PRIVATEL ALIGNCOMM %token READ WRITE EXECUTE SHARED NONAMEU NONAMEL DIRECTIVE EQUAL %token <id> ID %token <digits> DIGITS %type <number> NUMBER %type <vma> VMA opt_base %type <digits> opt_digits %type <number> opt_ordinal %type <number> attr attr_list opt_number exp_opt_list exp_opt %type <id> opt_name opt_name2 opt_equal_name anylang_id opt_id %type <id> opt_equalequal_name %type <id_const> keyword_as_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_K 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);} | ALIGNCOMM anylang_id ',' NUMBER { def_aligncomm ($2, $4);} ; 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>. */ opt_name2 opt_equal_name opt_ordinal opt_comma exp_opt_list opt_comma opt_equalequal_name { def_exports ($1, $2, $3, $5, $7); } ; 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 opt_equalequal_name { def_import ($1, $3, $5, $7, -1, $8); } | ID '=' ID '.' ID '.' NUMBER opt_equalequal_name { def_import ($1, $3, $5, 0, $7, $8); } | ID '=' ID '.' ID opt_equalequal_name { def_import ($1, $3, 0, $5, -1, $6); } | ID '=' ID '.' NUMBER opt_equalequal_name { def_import ($1, $3, 0, 0, $5, $6); } | ID '.' ID '.' ID opt_equalequal_name { def_import( 0, $1, $3, $5, -1, $6); } | ID '.' ID opt_equalequal_name { def_import ( 0, $1, 0, $3, -1, $4); } ; 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;} ; keyword_as_name: BASE { $$ = "BASE"; } | CODE { $$ = "CODE"; } | CONSTANTU { $$ = "CONSTANT"; } | CONSTANTL { $$ = "constant"; } | DATAU { $$ = "DATA"; } | DATAL { $$ = "data"; } | DESCRIPTION { $$ = "DESCRIPTION"; } | DIRECTIVE { $$ = "DIRECTIVE"; } | EXECUTE { $$ = "EXECUTE"; } | EXPORTS { $$ = "EXPORTS"; } | HEAPSIZE { $$ = "HEAPSIZE"; } | IMPORTS { $$ = "IMPORTS"; } /* Disable LIBRARY keyword as valid symbol-name. This is necessary for libtool, which places this command after EXPORTS command. This behavior is illegal by specification, but sadly required by by compatibility reasons. See PR binutils/13710 | LIBRARY { $$ = "LIBRARY"; } */ | NAME { $$ = "NAME"; } | NONAMEU { $$ = "NONAME"; } | NONAMEL { $$ = "noname"; } | PRIVATEU { $$ = "PRIVATE"; } | PRIVATEL { $$ = "private"; } | READ { $$ = "READ"; } | SHARED { $$ = "SHARED"; } | STACKSIZE_K { $$ = "STACKSIZE"; } | VERSIONK { $$ = "VERSION"; } | WRITE { $$ = "WRITE"; } ; opt_name2: ID { $$ = $1; } | '.' keyword_as_name { char *name = xmalloc (strlen ($2) + 2); sprintf (name, ".%s", $2); $$ = name; } | '.' opt_name2 { char *name = def_pool_alloc (strlen ($2) + 2); sprintf (name, ".%s", $2); $$ = name; } | keyword_as_name '.' opt_name2 { char *name = def_pool_alloc (strlen ($1) + 1 + strlen ($3) + 1); sprintf (name, "%s.%s", $1, $3); $$ = name; } | ID '.' opt_name2 { char *name = def_pool_alloc (strlen ($1) + 1 + strlen ($3) + 1); sprintf (name, "%s.%s", $1, $3); $$ = name; } ; opt_name: opt_name2 { $$ = $1; } | { $$ = ""; } ; opt_equalequal_name: EQUAL ID { $$ = $2; } | { $$ = 0; } ; opt_ordinal: '@' NUMBER { $$ = $2;} | { $$ = -1;} ; opt_equal_name: '=' opt_name2 { $$ = $2; } | { $$ = 0; } ; opt_base: BASE '=' VMA { $$ = $3;} | { $$ = (bfd_vma) -1;} ; anylang_id: ID { $$ = $1; } | '.' ID { char *id = def_pool_alloc (strlen ($2) + 2); sprintf (id, ".%s", $2); $$ = id; } | anylang_id '.' opt_digits opt_id { char *id = def_pool_alloc (strlen ($1) + 1 + strlen ($3) + strlen ($4) + 1); sprintf (id, "%s.%s%s", $1, $3, $4); $$ = id; } ; opt_digits: DIGITS { $$ = $1; } | { $$ = ""; } ; opt_id: ID { $$ = $1; } | { $$ = ""; } ; NUMBER: DIGITS { $$ = strtoul ($1, 0, 0); } ; VMA: DIGITS { $$ = (bfd_vma) strtoull ($1, 0, 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 (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); def_pool_free (); return 0; } fclose (the_file); while ((d = directives) != NULL) { #if TRACE printf ("Adding directive %08x `%s'\n", d->name, d->name); #endif def_file_add_directive (def, d->name, d->len); directives = d->next; free (d->name); free (d); } def_pool_free (); return def; } void def_file_free (def_file *fdef) { int i; if (!fdef) return; free (fdef->name); free (fdef->description); if (fdef->section_defs) { for (i = 0; i < fdef->num_section_defs; i++) { free (fdef->section_defs[i].name); free (fdef->section_defs[i].class); } free (fdef->section_defs); } if (fdef->exports) { for (i = 0; i < fdef->num_exports; i++) { if (fdef->exports[i].internal_name != fdef->exports[i].name) free (fdef->exports[i].internal_name); free (fdef->exports[i].name); free (fdef->exports[i].its_name); } free (fdef->exports); } if (fdef->imports) { for (i = 0; i < fdef->num_imports; i++) { if (fdef->imports[i].internal_name != fdef->imports[i].name) free (fdef->imports[i].internal_name); free (fdef->imports[i].name); free (fdef->imports[i].its_name); } free (fdef->imports); } while (fdef->modules) { def_file_module *m = fdef->modules; fdef->modules = fdef->modules->next; free (m); } while (fdef->aligncomms) { def_file_aligncomm *c = fdef->aligncomms; fdef->aligncomms = fdef->aligncomms->next; free (c->symbol_name); free (c); } free (fdef); } #ifdef DEF_FILE_PRINT void def_file_print (FILE *file, def_file *fdef) { int i; fprintf (file, ">>>> def_file at 0x%08x\n", fdef); if (fdef->name) fprintf (file, " name: %s\n", fdef->name ? fdef->name : "(unspecified)"); if (fdef->is_dll != -1) fprintf (file, " is dll: %s\n", fdef->is_dll ? "yes" : "no"); if (fdef->base_address != (bfd_vma) -1) { fprintf (file, " base address: 0x"); fprintf_vma (file, fdef->base_address); fprintf (file, "\n"); } if (fdef->description) fprintf (file, " description: `%s'\n", fdef->description); if (fdef->stack_reserve != -1) fprintf (file, " stack reserve: 0x%08x\n", fdef->stack_reserve); if (fdef->stack_commit != -1) fprintf (file, " stack commit: 0x%08x\n", fdef->stack_commit); if (fdef->heap_reserve != -1) fprintf (file, " heap reserve: 0x%08x\n", fdef->heap_reserve); if (fdef->heap_commit != -1) fprintf (file, " heap commit: 0x%08x\n", fdef->heap_commit); if (fdef->num_section_defs > 0) { fprintf (file, " section defs:\n"); for (i = 0; i < fdef->num_section_defs; i++) { fprintf (file, " name: `%s', class: `%s', flags:", fdef->section_defs[i].name, fdef->section_defs[i].class); if (fdef->section_defs[i].flag_read) fprintf (file, " R"); if (fdef->section_defs[i].flag_write) fprintf (file, " W"); if (fdef->section_defs[i].flag_execute) fprintf (file, " X"); if (fdef->section_defs[i].flag_shared) fprintf (file, " S"); fprintf (file, "\n"); } } if (fdef->num_exports > 0) { fprintf (file, " exports:\n"); for (i = 0; i < fdef->num_exports; i++) { fprintf (file, " name: `%s', int: `%s', ordinal: %d, flags:", fdef->exports[i].name, fdef->exports[i].internal_name, fdef->exports[i].ordinal); if (fdef->exports[i].flag_private) fprintf (file, " P"); if (fdef->exports[i].flag_constant) fprintf (file, " C"); if (fdef->exports[i].flag_noname) fprintf (file, " N"); if (fdef->exports[i].flag_data) fprintf (file, " D"); fprintf (file, "\n"); } } if (fdef->num_imports > 0) { fprintf (file, " imports:\n"); for (i = 0; i < fdef->num_imports; i++) { fprintf (file, " int: %s, from: `%s', name: `%s', ordinal: %d\n", fdef->imports[i].internal_name, fdef->imports[i].module, fdef->imports[i].name, fdef->imports[i].ordinal); } } if (fdef->version_major != -1) fprintf (file, " version: %d.%d\n", fdef->version_major, fdef->version_minor); fprintf (file, "<<<< def_file at 0x%08x\n", fdef); } #endif /* Helper routine to check for identity of string pointers, which might be NULL. */ static int are_names_equal (const char *s1, const char *s2) { if (!s1 && !s2) return 0; if (!s1 || !s2) return (!s1 ? -1 : 1); return strcmp (s1, s2); } static int cmp_export_elem (const def_file_export *e, const char *ex_name, const char *in_name, const char *its_name, int ord) { int r; if ((r = are_names_equal (ex_name, e->name)) != 0) return r; if ((r = are_names_equal (in_name, e->internal_name)) != 0) return r; if ((r = are_names_equal (its_name, e->its_name)) != 0) return r; return (ord - e->ordinal); } /* Search the position of the identical element, or returns the position of the next higher element. If last valid element is smaller, then MAX is returned. */ static int find_export_in_list (def_file_export *b, int max, const char *ex_name, const char *in_name, const char *its_name, int ord, int *is_ident) { int e, l, r, p; *is_ident = 0; if (!max) return 0; if ((e = cmp_export_elem (b, ex_name, in_name, its_name, ord)) <= 0) { if (!e) *is_ident = 1; return 0; } if (max == 1) return 1; if ((e = cmp_export_elem (b + (max - 1), ex_name, in_name, its_name, ord)) > 0) return max; else if (!e || max == 2) { if (!e) *is_ident = 1; return max - 1; } l = 0; r = max - 1; while (l < r) { p = (l + r) / 2; e = cmp_export_elem (b + p, ex_name, in_name, its_name, ord); if (!e) { *is_ident = 1; return p; } else if (e < 0) r = p - 1; else if (e > 0) l = p + 1; } if ((e = cmp_export_elem (b + l, ex_name, in_name, its_name, ord)) > 0) ++l; else if (!e) *is_ident = 1; return l; } def_file_export * def_file_add_export (def_file *fdef, const char *external_name, const char *internal_name, int ordinal, const char *its_name, int *is_dup) { def_file_export *e; int pos; int max_exports = ROUND_UP(fdef->num_exports, 32); if (internal_name && !external_name) external_name = internal_name; if (external_name && !internal_name) internal_name = external_name; /* We need to avoid duplicates. */ *is_dup = 0; pos = find_export_in_list (fdef->exports, fdef->num_exports, external_name, internal_name, its_name, ordinal, is_dup); if (*is_dup != 0) return (fdef->exports + pos); if (fdef->num_exports >= max_exports) { max_exports = ROUND_UP(fdef->num_exports + 1, 32); if (fdef->exports) fdef->exports = xrealloc (fdef->exports, max_exports * sizeof (def_file_export)); else fdef->exports = xmalloc (max_exports * sizeof (def_file_export)); } e = fdef->exports + pos; if (pos != fdef->num_exports) memmove (&e[1], e, (sizeof (def_file_export) * (fdef->num_exports - pos))); memset (e, 0, sizeof (def_file_export)); e->name = xstrdup (external_name); e->internal_name = xstrdup (internal_name); e->its_name = (its_name ? xstrdup (its_name) : NULL); e->ordinal = ordinal; fdef->num_exports++; return e; } def_file_module * def_get_module (def_file *fdef, const char *name) { def_file_module *s; for (s = fdef->modules; s; s = s->next) if (strcmp (s->name, name) == 0) return s; return NULL; } static def_file_module * def_stash_module (def_file *fdef, const char *name) { def_file_module *s; if ((s = def_get_module (fdef, name)) != NULL) return s; s = xmalloc (sizeof (def_file_module) + strlen (name)); s->next = fdef->modules; fdef->modules = s; s->user_data = 0; strcpy (s->name, name); return s; } static int cmp_import_elem (const def_file_import *e, const char *ex_name, const char *in_name, const char *module, int ord) { int r; if ((r = are_names_equal (module, (e->module ? e->module->name : NULL)))) return r; if ((r = are_names_equal (ex_name, e->name)) != 0) return r; if ((r = are_names_equal (in_name, e->internal_name)) != 0) return r; if (ord != e->ordinal) return (ord < e->ordinal ? -1 : 1); return 0; } /* Search the position of the identical element, or returns the position of the next higher element. If last valid element is smaller, then MAX is returned. */ static int find_import_in_list (def_file_import *b, int max, const char *ex_name, const char *in_name, const char *module, int ord, int *is_ident) { int e, l, r, p; *is_ident = 0; if (!max) return 0; if ((e = cmp_import_elem (b, ex_name, in_name, module, ord)) <= 0) { if (!e) *is_ident = 1; return 0; } if (max == 1) return 1; if ((e = cmp_import_elem (b + (max - 1), ex_name, in_name, module, ord)) > 0) return max; else if (!e || max == 2) { if (!e) *is_ident = 1; return max - 1; } l = 0; r = max - 1; while (l < r) { p = (l + r) / 2; e = cmp_import_elem (b + p, ex_name, in_name, module, ord); if (!e) { *is_ident = 1; return p; } else if (e < 0) r = p - 1; else if (e > 0) l = p + 1; } if ((e = cmp_import_elem (b + l, ex_name, in_name, module, ord)) > 0) ++l; else if (!e) *is_ident = 1; return l; } static void fill_in_import (def_file_import *i, const char *name, def_file_module *module, int ordinal, const char *internal_name, const char *its_name) { memset (i, 0, sizeof (def_file_import)); if (name) i->name = xstrdup (name); i->module = module; i->ordinal = ordinal; if (internal_name) i->internal_name = xstrdup (internal_name); else i->internal_name = i->name; i->its_name = (its_name ? xstrdup (its_name) : NULL); } def_file_import * def_file_add_import (def_file *fdef, const char *name, const char *module, int ordinal, const char *internal_name, const char *its_name, int *is_dup) { def_file_import *i; int pos; int max_imports = ROUND_UP (fdef->num_imports, 16); /* We need to avoid here duplicates. */ *is_dup = 0; pos = find_import_in_list (fdef->imports, fdef->num_imports, name, (!internal_name ? name : internal_name), module, ordinal, is_dup); if (*is_dup != 0) return fdef->imports + pos; if (fdef->num_imports >= max_imports) { max_imports = ROUND_UP (fdef->num_imports+1, 16); if (fdef->imports) fdef->imports = xrealloc (fdef->imports, max_imports * sizeof (def_file_import)); else fdef->imports = xmalloc (max_imports * sizeof (def_file_import)); } i = fdef->imports + pos; if (pos != fdef->num_imports) memmove (i + 1, i, sizeof (def_file_import) * (fdef->num_imports - pos)); fill_in_import (i, name, def_stash_module (fdef, module), ordinal, internal_name, its_name); fdef->num_imports++; return i; } int def_file_add_import_from (def_file *fdef, int num_imports, const char *name, const char *module, int ordinal, const char *internal_name, const char *its_name ATTRIBUTE_UNUSED) { def_file_import *i; int is_dup; int pos; int max_imports = ROUND_UP (fdef->num_imports, 16); /* We need to avoid here duplicates. */ is_dup = 0; pos = find_import_in_list (fdef->imports, fdef->num_imports, name, internal_name ? internal_name : name, module, ordinal, &is_dup); if (is_dup != 0) return -1; if (fdef->imports && pos != fdef->num_imports) { i = fdef->imports + pos; if (i->module && strcmp (i->module->name, module) == 0) return -1; } if (fdef->num_imports + num_imports - 1 >= max_imports) { max_imports = ROUND_UP (fdef->num_imports + num_imports, 16); if (fdef->imports) fdef->imports = xrealloc (fdef->imports, max_imports * sizeof (def_file_import)); else fdef->imports = xmalloc (max_imports * sizeof (def_file_import)); } i = fdef->imports + pos; if (pos != fdef->num_imports) memmove (i + num_imports, i, sizeof (def_file_import) * (fdef->num_imports - pos)); return pos; } def_file_import * def_file_add_import_at (def_file *fdef, int pos, const char *name, const char *module, int ordinal, const char *internal_name, const char *its_name) { def_file_import *i = fdef->imports + pos; fill_in_import (i, name, def_stash_module (fdef, module), ordinal, internal_name, its_name); fdef->num_imports++; return i; } struct { char *param; int token; } diropts[] = { { "-heap", HEAPSIZE }, { "-stack", STACKSIZE_K }, { "-attr", SECTIONS }, { "-export", EXPORTS }, { "-aligncomm", ALIGNCOMM }, { 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 separating options - a NUL separating options. */ for (tend = (char *) (param + 1); (tend < pend && !(ISSPACE (tend[-1]) && *tend == '-') && *tend != '\n' && *tend != 0); tend++) ; for (i = 0; diropts[i].param; i++) { 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) { if (tend < pend) { char saved; saved = * tend; * tend = 0; /* xgettext:c-format */ einfo (_("Warning: .drectve `%s' unrecognized\n"), param); * tend = saved; } else { einfo (_("Warning: corrupt .drectve at end of def file\n")); } } lex_parse_string = 0; param = tend; } def = save_def; def_pool_free (); } /* Parser Callbacks. */ static void def_image_name (const char *name, bfd_vma 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); 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, const char *its_name) { def_file_export *dfe; int is_dup = 0; 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, its_name, &is_dup); /* We might check here for flag redefinition and warn. For now we ignore duplicates silently. */ if (is_dup) return; 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, const char *its_name) { char *buf = 0; const char *ext = dllext ? dllext : "dll"; int is_dup = 0; 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, its_name, &is_dup); 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 void def_aligncomm (char *str, int align) { def_file_aligncomm *c, *p; p = NULL; c = def->aligncomms; while (c != NULL) { int e = strcmp (c->symbol_name, str); if (!e) { /* Not sure if we want to allow here duplicates with different alignments, but for now we keep them. */ e = (int) c->alignment - align; if (!e) return; } if (e > 0) break; c = (p = c)->next; } c = xmalloc (sizeof (def_file_aligncomm)); c->symbol_name = xstrdup (str); c->alignment = (unsigned int) align; if (!p) { c->next = def->aligncomms; def->aligncomms = c; } else { c->next = p->next; p->next = c; } } 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_K }, { "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.digits = def_pool_strdup (buffer); #if TRACE printf ("lex: `%s' returns DIGITS\n", buffer); #endif return DIGITS; } 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 = def_pool_strdup (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 = def_pool_strdup (buffer); #if TRACE printf ("lex: `%s' returns ID\n", buffer); #endif return ID; } if ( c == '=') { c = def_getc (); if (c == '=') { #if TRACE printf ("lex: `==' returns EQUAL\n"); #endif return EQUAL; } def_ungetc (c); #if TRACE printf ("lex: `=' returns itself\n"); #endif return '='; } if (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 (); } static char * def_pool_alloc (size_t sz) { def_pool_str *e; e = (def_pool_str *) xmalloc (sizeof (def_pool_str) + sz); e->next = pool_strs; pool_strs = e; return e->data; } static char * def_pool_strdup (const char *str) { char *s; size_t len; if (!str) return NULL; len = strlen (str) + 1; s = def_pool_alloc (len); memcpy (s, str, len); return s; } static void def_pool_free (void) { def_pool_str *p; while ((p = pool_strs) != NULL) { pool_strs = p->next; free (p); } }