/* Do various things to symbol tables (other than lookup), for GDB. Copyright (C) 1986-2000, 2002-2004, 2007-2012 Free Software Foundation, Inc. This file is part of GDB. 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, see <http://www.gnu.org/licenses/>. */ #include "defs.h" #include "symtab.h" #include "gdbtypes.h" #include "bfd.h" #include "filenames.h" #include "symfile.h" #include "objfiles.h" #include "breakpoint.h" #include "command.h" #include "gdb_obstack.h" #include "exceptions.h" #include "language.h" #include "bcache.h" #include "block.h" #include "gdb_regex.h" #include "gdb_stat.h" #include "dictionary.h" #include "gdb_string.h" #include "readline/readline.h" #include "psymtab.h" #ifndef DEV_TTY #define DEV_TTY "/dev/tty" #endif /* Unfortunately for debugging, stderr is usually a macro. This is painful when calling functions that take FILE *'s from the debugger. So we make a variable which has the same value and which is accessible when debugging GDB with itself. Because stdin et al need not be constants, we initialize them in the _initialize_symmisc function at the bottom of the file. */ FILE *std_in; FILE *std_out; FILE *std_err; /* Prototypes for local functions */ static void dump_symtab (struct objfile *, struct symtab *, struct ui_file *); static void dump_msymbols (struct objfile *, struct ui_file *); static void dump_objfile (struct objfile *); static int block_depth (struct block *); void _initialize_symmisc (void); struct print_symbol_args { struct gdbarch *gdbarch; struct symbol *symbol; int depth; struct ui_file *outfile; }; static int print_symbol (void *); void print_symbol_bcache_statistics (void) { struct program_space *pspace; struct objfile *objfile; ALL_PSPACES (pspace) ALL_PSPACE_OBJFILES (pspace, objfile) { QUIT; printf_filtered (_("Byte cache statistics for '%s':\n"), objfile->name); print_bcache_statistics (psymbol_bcache_get_bcache (objfile->psymbol_cache), "partial symbol cache"); print_bcache_statistics (objfile->per_bfd->macro_cache, "preprocessor macro cache"); print_bcache_statistics (objfile->per_bfd->filename_cache, "file name cache"); } } void print_objfile_statistics (void) { struct program_space *pspace; struct objfile *objfile; struct symtab *s; int i, linetables, blockvectors; ALL_PSPACES (pspace) ALL_PSPACE_OBJFILES (pspace, objfile) { QUIT; printf_filtered (_("Statistics for '%s':\n"), objfile->name); if (OBJSTAT (objfile, n_stabs) > 0) printf_filtered (_(" Number of \"stab\" symbols read: %d\n"), OBJSTAT (objfile, n_stabs)); if (OBJSTAT (objfile, n_minsyms) > 0) printf_filtered (_(" Number of \"minimal\" symbols read: %d\n"), OBJSTAT (objfile, n_minsyms)); if (OBJSTAT (objfile, n_psyms) > 0) printf_filtered (_(" Number of \"partial\" symbols read: %d\n"), OBJSTAT (objfile, n_psyms)); if (OBJSTAT (objfile, n_syms) > 0) printf_filtered (_(" Number of \"full\" symbols read: %d\n"), OBJSTAT (objfile, n_syms)); if (OBJSTAT (objfile, n_types) > 0) printf_filtered (_(" Number of \"types\" defined: %d\n"), OBJSTAT (objfile, n_types)); if (objfile->sf) objfile->sf->qf->print_stats (objfile); i = linetables = blockvectors = 0; ALL_OBJFILE_SYMTABS (objfile, s) { i++; if (s->linetable != NULL) linetables++; if (s->primary == 1) blockvectors++; } printf_filtered (_(" Number of symbol tables: %d\n"), i); printf_filtered (_(" Number of symbol tables with line tables: %d\n"), linetables); printf_filtered (_(" Number of symbol tables with blockvectors: %d\n"), blockvectors); if (OBJSTAT (objfile, sz_strtab) > 0) printf_filtered (_(" Space used by a.out string tables: %d\n"), OBJSTAT (objfile, sz_strtab)); printf_filtered (_(" Total memory used for objfile obstack: %d\n"), obstack_memory_used (&objfile->objfile_obstack)); printf_filtered (_(" Total memory used for BFD obstack: %d\n"), obstack_memory_used (&objfile->per_bfd->storage_obstack)); printf_filtered (_(" Total memory used for psymbol cache: %d\n"), bcache_memory_used (psymbol_bcache_get_bcache (objfile->psymbol_cache))); printf_filtered (_(" Total memory used for macro cache: %d\n"), bcache_memory_used (objfile->per_bfd->macro_cache)); printf_filtered (_(" Total memory used for file name cache: %d\n"), bcache_memory_used (objfile->per_bfd->filename_cache)); } } static void dump_objfile (struct objfile *objfile) { struct symtab *symtab; printf_filtered ("\nObject file %s: ", objfile->name); printf_filtered ("Objfile at "); gdb_print_host_address (objfile, gdb_stdout); printf_filtered (", bfd at "); gdb_print_host_address (objfile->obfd, gdb_stdout); printf_filtered (", %d minsyms\n\n", objfile->minimal_symbol_count); if (objfile->sf) objfile->sf->qf->dump (objfile); if (objfile->symtabs) { printf_filtered ("Symtabs:\n"); for (symtab = objfile->symtabs; symtab != NULL; symtab = symtab->next) { printf_filtered ("%s at ", symtab->filename); gdb_print_host_address (symtab, gdb_stdout); printf_filtered (", "); if (symtab->objfile != objfile) { printf_filtered ("NOT ON CHAIN! "); } wrap_here (" "); } printf_filtered ("\n\n"); } } /* Print minimal symbols from this objfile. */ static void dump_msymbols (struct objfile *objfile, struct ui_file *outfile) { struct gdbarch *gdbarch = get_objfile_arch (objfile); struct minimal_symbol *msymbol; int index; char ms_type; fprintf_filtered (outfile, "\nObject file %s:\n\n", objfile->name); if (objfile->minimal_symbol_count == 0) { fprintf_filtered (outfile, "No minimal symbols found.\n"); return; } index = 0; ALL_OBJFILE_MSYMBOLS (objfile, msymbol) { struct obj_section *section = SYMBOL_OBJ_SECTION (msymbol); switch (MSYMBOL_TYPE (msymbol)) { case mst_unknown: ms_type = 'u'; break; case mst_text: ms_type = 'T'; break; case mst_text_gnu_ifunc: ms_type = 'i'; break; case mst_solib_trampoline: ms_type = 'S'; break; case mst_data: ms_type = 'D'; break; case mst_bss: ms_type = 'B'; break; case mst_abs: ms_type = 'A'; break; case mst_file_text: ms_type = 't'; break; case mst_file_data: ms_type = 'd'; break; case mst_file_bss: ms_type = 'b'; break; default: ms_type = '?'; break; } fprintf_filtered (outfile, "[%2d] %c ", index, ms_type); fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (msymbol)), outfile); fprintf_filtered (outfile, " %s", SYMBOL_LINKAGE_NAME (msymbol)); if (section) fprintf_filtered (outfile, " section %s", bfd_section_name (objfile->obfd, section->the_bfd_section)); if (SYMBOL_DEMANGLED_NAME (msymbol) != NULL) { fprintf_filtered (outfile, " %s", SYMBOL_DEMANGLED_NAME (msymbol)); } if (msymbol->filename) fprintf_filtered (outfile, " %s", msymbol->filename); fputs_filtered ("\n", outfile); index++; } if (objfile->minimal_symbol_count != index) { warning (_("internal error: minimal symbol count %d != %d"), objfile->minimal_symbol_count, index); } fprintf_filtered (outfile, "\n"); } static void dump_symtab_1 (struct objfile *objfile, struct symtab *symtab, struct ui_file *outfile) { struct gdbarch *gdbarch = get_objfile_arch (objfile); int i; struct dict_iterator iter; int len; struct linetable *l; struct blockvector *bv; struct symbol *sym; struct block *b; int depth; fprintf_filtered (outfile, "\nSymtab for file %s\n", symtab->filename); if (symtab->dirname) fprintf_filtered (outfile, "Compilation directory is %s\n", symtab->dirname); fprintf_filtered (outfile, "Read from object file %s (", objfile->name); gdb_print_host_address (objfile, outfile); fprintf_filtered (outfile, ")\n"); fprintf_filtered (outfile, "Language: %s\n", language_str (symtab->language)); /* First print the line table. */ l = LINETABLE (symtab); if (l) { fprintf_filtered (outfile, "\nLine table:\n\n"); len = l->nitems; for (i = 0; i < len; i++) { fprintf_filtered (outfile, " line %d at ", l->item[i].line); fputs_filtered (paddress (gdbarch, l->item[i].pc), outfile); fprintf_filtered (outfile, "\n"); } } /* Now print the block info, but only for primary symtabs since we will print lots of duplicate info otherwise. */ if (symtab->primary) { fprintf_filtered (outfile, "\nBlockvector:\n\n"); bv = BLOCKVECTOR (symtab); len = BLOCKVECTOR_NBLOCKS (bv); for (i = 0; i < len; i++) { b = BLOCKVECTOR_BLOCK (bv, i); depth = block_depth (b) * 2; print_spaces (depth, outfile); fprintf_filtered (outfile, "block #%03d, object at ", i); gdb_print_host_address (b, outfile); if (BLOCK_SUPERBLOCK (b)) { fprintf_filtered (outfile, " under "); gdb_print_host_address (BLOCK_SUPERBLOCK (b), outfile); } /* drow/2002-07-10: We could save the total symbols count even if we're using a hashtable, but nothing else but this message wants it. */ fprintf_filtered (outfile, ", %d syms/buckets in ", dict_size (BLOCK_DICT (b))); fputs_filtered (paddress (gdbarch, BLOCK_START (b)), outfile); fprintf_filtered (outfile, ".."); fputs_filtered (paddress (gdbarch, BLOCK_END (b)), outfile); if (BLOCK_FUNCTION (b)) { fprintf_filtered (outfile, ", function %s", SYMBOL_LINKAGE_NAME (BLOCK_FUNCTION (b))); if (SYMBOL_DEMANGLED_NAME (BLOCK_FUNCTION (b)) != NULL) { fprintf_filtered (outfile, ", %s", SYMBOL_DEMANGLED_NAME (BLOCK_FUNCTION (b))); } } fprintf_filtered (outfile, "\n"); /* Now print each symbol in this block (in no particular order, if we're using a hashtable). Note that we only want this block, not any blocks from included symtabs. */ ALL_DICT_SYMBOLS (BLOCK_DICT (b), iter, sym) { struct print_symbol_args s; s.gdbarch = gdbarch; s.symbol = sym; s.depth = depth + 1; s.outfile = outfile; catch_errors (print_symbol, &s, "Error printing symbol:\n", RETURN_MASK_ERROR); } } fprintf_filtered (outfile, "\n"); } else { fprintf_filtered (outfile, "\nBlockvector same as previous symtab\n\n"); } } static void dump_symtab (struct objfile *objfile, struct symtab *symtab, struct ui_file *outfile) { /* Set the current language to the language of the symtab we're dumping because certain routines used during dump_symtab() use the current language to print an image of the symbol. We'll restore it later. But use only real languages, not placeholders. */ if (symtab->language != language_unknown && symtab->language != language_auto) { enum language saved_lang; saved_lang = set_language (symtab->language); dump_symtab_1 (objfile, symtab, outfile); set_language (saved_lang); } else dump_symtab_1 (objfile, symtab, outfile); } void maintenance_print_symbols (char *args, int from_tty) { char **argv; struct ui_file *outfile; struct cleanup *cleanups; char *symname = NULL; char *filename = DEV_TTY; struct objfile *objfile; struct symtab *s; dont_repeat (); if (args == NULL) { error (_("Arguments missing: an output file name " "and an optional symbol file name")); } argv = gdb_buildargv (args); cleanups = make_cleanup_freeargv (argv); if (argv[0] != NULL) { filename = argv[0]; /* If a second arg is supplied, it is a source file name to match on. */ if (argv[1] != NULL) { symname = argv[1]; } } filename = tilde_expand (filename); make_cleanup (xfree, filename); outfile = gdb_fopen (filename, FOPEN_WT); if (outfile == 0) perror_with_name (filename); make_cleanup_ui_file_delete (outfile); ALL_SYMTABS (objfile, s) { QUIT; if (symname == NULL || filename_cmp (symname, s->filename) == 0) dump_symtab (objfile, s, outfile); } do_cleanups (cleanups); } /* Print symbol ARGS->SYMBOL on ARGS->OUTFILE. ARGS->DEPTH says how far to indent. ARGS is really a struct print_symbol_args *, but is declared as char * to get it past catch_errors. Returns 0 for error, 1 for success. */ static int print_symbol (void *args) { struct gdbarch *gdbarch = ((struct print_symbol_args *) args)->gdbarch; struct symbol *symbol = ((struct print_symbol_args *) args)->symbol; int depth = ((struct print_symbol_args *) args)->depth; struct ui_file *outfile = ((struct print_symbol_args *) args)->outfile; struct obj_section *section = SYMBOL_OBJ_SECTION (symbol); print_spaces (depth, outfile); if (SYMBOL_DOMAIN (symbol) == LABEL_DOMAIN) { fprintf_filtered (outfile, "label %s at ", SYMBOL_PRINT_NAME (symbol)); fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)), outfile); if (section) fprintf_filtered (outfile, " section %s\n", bfd_section_name (section->the_bfd_section->owner, section->the_bfd_section)); else fprintf_filtered (outfile, "\n"); return 1; } if (SYMBOL_DOMAIN (symbol) == STRUCT_DOMAIN) { if (TYPE_TAG_NAME (SYMBOL_TYPE (symbol))) { LA_PRINT_TYPE (SYMBOL_TYPE (symbol), "", outfile, 1, depth); } else { fprintf_filtered (outfile, "%s %s = ", (TYPE_CODE (SYMBOL_TYPE (symbol)) == TYPE_CODE_ENUM ? "enum" : (TYPE_CODE (SYMBOL_TYPE (symbol)) == TYPE_CODE_STRUCT ? "struct" : "union")), SYMBOL_LINKAGE_NAME (symbol)); LA_PRINT_TYPE (SYMBOL_TYPE (symbol), "", outfile, 1, depth); } fprintf_filtered (outfile, ";\n"); } else { if (SYMBOL_CLASS (symbol) == LOC_TYPEDEF) fprintf_filtered (outfile, "typedef "); if (SYMBOL_TYPE (symbol)) { /* Print details of types, except for enums where it's clutter. */ LA_PRINT_TYPE (SYMBOL_TYPE (symbol), SYMBOL_PRINT_NAME (symbol), outfile, TYPE_CODE (SYMBOL_TYPE (symbol)) != TYPE_CODE_ENUM, depth); fprintf_filtered (outfile, "; "); } else fprintf_filtered (outfile, "%s ", SYMBOL_PRINT_NAME (symbol)); switch (SYMBOL_CLASS (symbol)) { case LOC_CONST: fprintf_filtered (outfile, "const %s (%s)", plongest (SYMBOL_VALUE (symbol)), hex_string (SYMBOL_VALUE (symbol))); break; case LOC_CONST_BYTES: { unsigned i; struct type *type = check_typedef (SYMBOL_TYPE (symbol)); fprintf_filtered (outfile, "const %u hex bytes:", TYPE_LENGTH (type)); for (i = 0; i < TYPE_LENGTH (type); i++) fprintf_filtered (outfile, " %02x", (unsigned) SYMBOL_VALUE_BYTES (symbol)[i]); } break; case LOC_STATIC: fprintf_filtered (outfile, "static at "); fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)), outfile); if (section) fprintf_filtered (outfile, " section %s", bfd_section_name (section->the_bfd_section->owner, section->the_bfd_section)); break; case LOC_REGISTER: if (SYMBOL_IS_ARGUMENT (symbol)) fprintf_filtered (outfile, "parameter register %s", plongest (SYMBOL_VALUE (symbol))); else fprintf_filtered (outfile, "register %s", plongest (SYMBOL_VALUE (symbol))); break; case LOC_ARG: fprintf_filtered (outfile, "arg at offset %s", hex_string (SYMBOL_VALUE (symbol))); break; case LOC_REF_ARG: fprintf_filtered (outfile, "reference arg at %s", hex_string (SYMBOL_VALUE (symbol))); break; case LOC_REGPARM_ADDR: fprintf_filtered (outfile, "address parameter register %s", plongest (SYMBOL_VALUE (symbol))); break; case LOC_LOCAL: fprintf_filtered (outfile, "local at offset %s", hex_string (SYMBOL_VALUE (symbol))); break; case LOC_TYPEDEF: break; case LOC_LABEL: fprintf_filtered (outfile, "label at "); fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (symbol)), outfile); if (section) fprintf_filtered (outfile, " section %s", bfd_section_name (section->the_bfd_section->owner, section->the_bfd_section)); break; case LOC_BLOCK: fprintf_filtered (outfile, "block object "); gdb_print_host_address (SYMBOL_BLOCK_VALUE (symbol), outfile); fprintf_filtered (outfile, ", "); fputs_filtered (paddress (gdbarch, BLOCK_START (SYMBOL_BLOCK_VALUE (symbol))), outfile); fprintf_filtered (outfile, ".."); fputs_filtered (paddress (gdbarch, BLOCK_END (SYMBOL_BLOCK_VALUE (symbol))), outfile); if (section) fprintf_filtered (outfile, " section %s", bfd_section_name (section->the_bfd_section->owner, section->the_bfd_section)); break; case LOC_COMPUTED: fprintf_filtered (outfile, "computed at runtime"); break; case LOC_UNRESOLVED: fprintf_filtered (outfile, "unresolved"); break; case LOC_OPTIMIZED_OUT: fprintf_filtered (outfile, "optimized out"); break; default: fprintf_filtered (outfile, "botched symbol class %x", SYMBOL_CLASS (symbol)); break; } } fprintf_filtered (outfile, "\n"); return 1; } void maintenance_print_msymbols (char *args, int from_tty) { char **argv; struct ui_file *outfile; struct cleanup *cleanups; char *filename = DEV_TTY; char *symname = NULL; struct program_space *pspace; struct objfile *objfile; struct stat sym_st, obj_st; dont_repeat (); if (args == NULL) { error (_("print-msymbols takes an output file " "name and optional symbol file name")); } argv = gdb_buildargv (args); cleanups = make_cleanup_freeargv (argv); if (argv[0] != NULL) { filename = argv[0]; /* If a second arg is supplied, it is a source file name to match on. */ if (argv[1] != NULL) { symname = xfullpath (argv[1]); make_cleanup (xfree, symname); if (symname && stat (symname, &sym_st)) perror_with_name (symname); } } filename = tilde_expand (filename); make_cleanup (xfree, filename); outfile = gdb_fopen (filename, FOPEN_WT); if (outfile == 0) perror_with_name (filename); make_cleanup_ui_file_delete (outfile); ALL_PSPACES (pspace) ALL_PSPACE_OBJFILES (pspace, objfile) { QUIT; if (symname == NULL || (!stat (objfile->name, &obj_st) && sym_st.st_ino == obj_st.st_ino)) dump_msymbols (objfile, outfile); } fprintf_filtered (outfile, "\n\n"); do_cleanups (cleanups); } void maintenance_print_objfiles (char *ignore, int from_tty) { struct program_space *pspace; struct objfile *objfile; dont_repeat (); ALL_PSPACES (pspace) ALL_PSPACE_OBJFILES (pspace, objfile) { QUIT; dump_objfile (objfile); } } /* List all the symbol tables whose names match REGEXP (optional). */ void maintenance_info_symtabs (char *regexp, int from_tty) { struct program_space *pspace; struct objfile *objfile; if (regexp) re_comp (regexp); ALL_PSPACES (pspace) ALL_PSPACE_OBJFILES (pspace, objfile) { struct symtab *symtab; /* We don't want to print anything for this objfile until we actually find a symtab whose name matches. */ int printed_objfile_start = 0; ALL_OBJFILE_SYMTABS (objfile, symtab) { QUIT; if (! regexp || re_exec (symtab->filename)) { if (! printed_objfile_start) { printf_filtered ("{ objfile %s ", objfile->name); wrap_here (" "); printf_filtered ("((struct objfile *) %s)\n", host_address_to_string (objfile)); printed_objfile_start = 1; } printf_filtered (" { symtab %s ", symtab->filename); wrap_here (" "); printf_filtered ("((struct symtab *) %s)\n", host_address_to_string (symtab)); printf_filtered (" dirname %s\n", symtab->dirname ? symtab->dirname : "(null)"); printf_filtered (" fullname %s\n", symtab->fullname ? symtab->fullname : "(null)"); printf_filtered (" " "blockvector ((struct blockvector *) %s)%s\n", host_address_to_string (symtab->blockvector), symtab->primary ? " (primary)" : ""); printf_filtered (" " "linetable ((struct linetable *) %s)\n", host_address_to_string (symtab->linetable)); printf_filtered (" debugformat %s\n", symtab->debugformat); printf_filtered (" }\n"); } } if (printed_objfile_start) printf_filtered ("}\n"); } } /* Return the nexting depth of a block within other blocks in its symtab. */ static int block_depth (struct block *block) { int i = 0; while ((block = BLOCK_SUPERBLOCK (block)) != NULL) { i++; } return i; } /* Do early runtime initializations. */ void _initialize_symmisc (void) { std_in = stdin; std_out = stdout; std_err = stderr; }