/* Do various things to symbol tables (other than lookup), for GDB. Copyright 1986, 1987, 1989, 1991, 1992 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 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "defs.h" #include "symtab.h" #include "gdbtypes.h" #include "bfd.h" #include "symfile.h" #include "objfiles.h" #include "breakpoint.h" #include "command.h" #include "obstack.h" #include "language.h" #include #ifndef DEV_TTY #define DEV_TTY "/dev/tty" #endif /* Unfortunately for debugging, stderr is usually a macro. Better if we make a variable which has the same value and which is accessible when debugging GDB with itself. */ FILE *std_in = stdin; FILE *std_out = stdout; FILE *std_err = stderr; /* Prototypes for local functions */ static void dump_symtab PARAMS ((struct objfile *, struct symtab *, FILE *)); static void dump_psymtab PARAMS ((struct objfile *, struct partial_symtab *, FILE *)); static void dump_msymbols PARAMS ((struct objfile *, FILE *)); static void dump_objfile PARAMS ((struct objfile *)); static void printobjfiles_command PARAMS ((char *, int)); static int block_depth PARAMS ((struct block *)); static void print_partial_symbol PARAMS ((struct partial_symbol *, int, char *, FILE *)); static void printpsyms_command PARAMS ((char *, int)); static void print_symbol PARAMS ((struct symbol *, int, FILE *)); static void printsyms_command PARAMS ((char *, int)); static void free_symtab_block PARAMS ((struct objfile *, struct block *)); static void printmsyms_command PARAMS ((char *, int)); /* Free a struct block <- B and all the symbols defined in that block. */ static void free_symtab_block (objfile, b) struct objfile *objfile; struct block *b; { register int i, n; n = BLOCK_NSYMS (b); for (i = 0; i < n; i++) { mfree (objfile -> md, SYMBOL_NAME (BLOCK_SYM (b, i))); mfree (objfile -> md, (PTR) BLOCK_SYM (b, i)); } mfree (objfile -> md, (PTR) b); } /* Free all the storage associated with the struct symtab <- S. Note that some symtabs have contents malloc'ed structure by structure, while some have contents that all live inside one big block of memory, and some share the contents of another symbol table and so you should not free the contents on their behalf (except sometimes the linetable, which maybe per symtab even when the rest is not). It is s->free_code that says which alternative to use. */ void free_symtab (s) register struct symtab *s; { register int i, n; register struct blockvector *bv; switch (s->free_code) { case free_nothing: /* All the contents are part of a big block of memory (an obstack), and some other symtab is in charge of freeing that block. Therefore, do nothing. */ break; case free_contents: /* Here all the contents were malloc'ed structure by structure and must be freed that way. */ /* First free the blocks (and their symbols. */ bv = BLOCKVECTOR (s); n = BLOCKVECTOR_NBLOCKS (bv); for (i = 0; i < n; i++) free_symtab_block (s -> objfile, BLOCKVECTOR_BLOCK (bv, i)); /* Free the blockvector itself. */ mfree (s -> objfile -> md, (PTR) bv); /* Also free the linetable. */ case free_linetable: /* Everything will be freed either by our `free_ptr' or by some other symtab, except for our linetable. Free that now. */ if (LINETABLE (s)) mfree (s -> objfile -> md, (PTR) LINETABLE (s)); break; } /* If there is a single block of memory to free, free it. */ if (s -> free_ptr != NULL) mfree (s -> objfile -> md, s -> free_ptr); /* Free source-related stuff */ if (s -> line_charpos != NULL) mfree (s -> objfile -> md, (PTR) s -> line_charpos); if (s -> fullname != NULL) mfree (s -> objfile -> md, s -> fullname); mfree (s -> objfile -> md, (PTR) s); } static void dump_objfile (objfile) struct objfile *objfile; { struct symtab *symtab; struct partial_symtab *psymtab; printf_filtered ("\nObject file %s: ", objfile -> name); printf_filtered ("Objfile at %x, bfd at %x, %d minsyms\n\n", objfile, objfile -> obfd, objfile->minimal_symbol_count); if (objfile -> psymtabs) { printf_filtered ("Psymtabs:\n"); for (psymtab = objfile -> psymtabs; psymtab != NULL; psymtab = psymtab -> next) { printf_filtered ("%s at %x, ", psymtab -> filename, psymtab); if (psymtab -> objfile != objfile) { printf_filtered ("NOT ON CHAIN! "); } wrap_here (" "); } printf_filtered ("\n\n"); } if (objfile -> symtabs) { printf_filtered ("Symtabs:\n"); for (symtab = objfile -> symtabs; symtab != NULL; symtab = symtab->next) { printf_filtered ("%s at %x, ", symtab -> filename, symtab); 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 (objfile, outfile) struct objfile *objfile; FILE *outfile; { struct minimal_symbol *msymbol; int index; char ms_type; fprintf_filtered (outfile, "\nObject file %s:\n\n", objfile -> name); for (index = 0, msymbol = objfile -> msymbols; msymbol -> name != NULL; msymbol++, index++) { switch (msymbol -> type) { case mst_unknown: ms_type = 'u'; break; case mst_text: ms_type = 't'; break; case mst_data: ms_type = 'd'; break; case mst_bss: ms_type = 'b'; break; case mst_abs: ms_type = 'a'; break; default: ms_type = '?'; break; } fprintf_filtered (outfile, "[%2d] %c %#10x %s\n", index, ms_type, msymbol -> address, msymbol -> name); } 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_psymtab (objfile, psymtab, outfile) struct objfile *objfile; struct partial_symtab *psymtab; FILE *outfile; { fprintf_filtered (outfile, "\nPartial symtab for source file %s ", psymtab -> filename); fprintf_filtered (outfile, "(object 0x%x)\n\n", psymtab); fprintf (outfile, " Read from object file %s (0x%x)\n", objfile -> name, (unsigned int) objfile); if (psymtab -> readin) { fprintf_filtered (outfile, " Full symtab was read (at 0x%x by function at 0x%x)\n", psymtab -> symtab, psymtab -> read_symtab); } fprintf_filtered (outfile, " Relocate symbols by 0x%x\n", psymtab -> addr); fprintf_filtered (outfile, " Symbols cover text addresses 0x%x-0x%x\n", psymtab -> textlow, psymtab -> texthigh); fprintf_filtered (outfile, " Depends on %d other partial symtabs.\n", psymtab -> number_of_dependencies); if (psymtab -> n_global_syms > 0) { print_partial_symbol (objfile -> global_psymbols.list + psymtab -> globals_offset, psymtab -> n_global_syms, "Global", outfile); } if (psymtab -> n_static_syms > 0) { print_partial_symbol (objfile -> static_psymbols.list + psymtab -> statics_offset, psymtab -> n_static_syms, "Static", outfile); } fprintf_filtered (outfile, "\n"); } static void dump_symtab (objfile, symtab, outfile) struct objfile *objfile; struct symtab *symtab; FILE *outfile; { register int i, j; int len, blen; register struct linetable *l; struct blockvector *bv; register struct block *b; int depth; fprintf (outfile, "\nSymtab for file %s\n", symtab->filename); fprintf (outfile, "Read from object file %s (%x)\n", objfile->name, (unsigned int) objfile); fprintf (outfile, "Language: %s\n", language_str (symtab -> language)); /* First print the line table. */ l = LINETABLE (symtab); if (l) { fprintf (outfile, "\nLine table:\n\n"); len = l->nitems; for (i = 0; i < len; i++) fprintf (outfile, " line %d at %x\n", l->item[i].line, l->item[i].pc); } /* Now print the block info. */ fprintf (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 (outfile, "block #%03d (object 0x%x) ", i, (unsigned int) b); fprintf (outfile, "[0x%x..0x%x]", BLOCK_START (b), BLOCK_END (b)); if (BLOCK_SUPERBLOCK (b)) fprintf (outfile, " (under 0x%x)", (unsigned int) BLOCK_SUPERBLOCK (b)); if (BLOCK_FUNCTION (b)) fprintf (outfile, " %s", SYMBOL_NAME (BLOCK_FUNCTION (b))); fputc ('\n', outfile); blen = BLOCK_NSYMS (b); for (j = 0; j < blen; j++) { print_symbol (BLOCK_SYM (b, j), depth + 1, outfile); } } fprintf (outfile, "\n"); } static void printsyms_command (args, from_tty) char *args; int from_tty; { char **argv; FILE *outfile; struct cleanup *cleanups; char *symname = NULL; char *filename = DEV_TTY; struct objfile *objfile; struct symtab *s; dont_repeat (); if (args == NULL) { error ("printsyms takes an output file name and optional symbol file name"); } else if ((argv = buildargv (args)) == NULL) { nomem (0); } cleanups = make_cleanup (freeargv, (char *) 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 (free, filename); outfile = fopen (filename, "w"); if (outfile == 0) perror_with_name (filename); make_cleanup (fclose, (char *) outfile); immediate_quit++; ALL_SYMTABS (objfile, s) if (symname == NULL || (strcmp (symname, s -> filename) == 0)) dump_symtab (objfile, s, outfile); immediate_quit--; do_cleanups (cleanups); } static void print_symbol (symbol, depth, outfile) struct symbol *symbol; int depth; FILE *outfile; { print_spaces (depth, outfile); if (SYMBOL_NAMESPACE (symbol) == LABEL_NAMESPACE) { fprintf (outfile, "label %s at 0x%x\n", SYMBOL_NAME (symbol), SYMBOL_VALUE_ADDRESS (symbol)); return; } if (SYMBOL_NAMESPACE (symbol) == STRUCT_NAMESPACE) { if (TYPE_NAME (SYMBOL_TYPE (symbol))) { type_print_1 (SYMBOL_TYPE (symbol), "", outfile, 1, depth); } else { fprintf (outfile, "%s %s = ", (TYPE_CODE (SYMBOL_TYPE (symbol)) == TYPE_CODE_ENUM ? "enum" : (TYPE_CODE (SYMBOL_TYPE (symbol)) == TYPE_CODE_STRUCT ? "struct" : "union")), SYMBOL_NAME (symbol)); type_print_1 (SYMBOL_TYPE (symbol), "", outfile, 1, depth); } fprintf (outfile, ";\n"); } else { if (SYMBOL_CLASS (symbol) == LOC_TYPEDEF) fprintf (outfile, "typedef "); if (SYMBOL_TYPE (symbol)) { /* Print details of types, except for enums where it's clutter. */ type_print_1 (SYMBOL_TYPE (symbol), SYMBOL_NAME (symbol), outfile, TYPE_CODE (SYMBOL_TYPE (symbol)) != TYPE_CODE_ENUM, depth); fprintf (outfile, "; "); } else fprintf (outfile, "%s ", SYMBOL_NAME (symbol)); switch (SYMBOL_CLASS (symbol)) { case LOC_CONST: fprintf (outfile, "const %ld (0x%lx),", SYMBOL_VALUE (symbol), SYMBOL_VALUE (symbol)); break; case LOC_CONST_BYTES: fprintf (outfile, "const %u hex bytes:", TYPE_LENGTH (SYMBOL_TYPE (symbol))); { unsigned i; for (i = 0; i < TYPE_LENGTH (SYMBOL_TYPE (symbol)); i++) fprintf (outfile, " %2x", (unsigned)SYMBOL_VALUE_BYTES (symbol) [i]); fprintf (outfile, ","); } break; case LOC_STATIC: fprintf (outfile, "static at 0x%x,", SYMBOL_VALUE_ADDRESS (symbol)); break; case LOC_REGISTER: fprintf (outfile, "register %ld,", SYMBOL_VALUE (symbol)); break; case LOC_ARG: if (SYMBOL_BASEREG_VALID (symbol)) { fprintf (outfile, "arg at 0x%lx from register %d,", SYMBOL_VALUE (symbol), SYMBOL_BASEREG (symbol)); } else { fprintf (outfile, "arg at 0x%lx,", SYMBOL_VALUE (symbol)); } break; case LOC_LOCAL_ARG: if (SYMBOL_BASEREG_VALID (symbol)) { fprintf (outfile, "arg at offset 0x%lx from register %d,", SYMBOL_VALUE (symbol), SYMBOL_BASEREG (symbol)); } else { fprintf (outfile, "arg at offset 0x%lx from fp,", SYMBOL_VALUE (symbol)); } case LOC_REF_ARG: fprintf (outfile, "reference arg at 0x%lx,", SYMBOL_VALUE (symbol)); break; case LOC_REGPARM: fprintf (outfile, "parameter register %ld,", SYMBOL_VALUE (symbol)); break; case LOC_LOCAL: if (SYMBOL_BASEREG_VALID (symbol)) { fprintf (outfile, "local at 0x%lx from register %d", SYMBOL_VALUE (symbol), SYMBOL_BASEREG (symbol)); } else { fprintf (outfile, "local at 0x%lx,", SYMBOL_VALUE (symbol)); } break; case LOC_TYPEDEF: break; case LOC_LABEL: fprintf (outfile, "label at 0x%lx", SYMBOL_VALUE_ADDRESS (symbol)); break; case LOC_BLOCK: fprintf (outfile, "block (object 0x%x) starting at 0x%x,", (unsigned int) SYMBOL_BLOCK_VALUE (symbol), BLOCK_START (SYMBOL_BLOCK_VALUE (symbol))); break; default: fprintf (outfile, "botched symbol class %x", SYMBOL_CLASS (symbol)); break; } } fprintf (outfile, "\n"); } static void printpsyms_command (args, from_tty) char *args; int from_tty; { char **argv; FILE *outfile; struct cleanup *cleanups; char *symname = NULL; char *filename = DEV_TTY; struct objfile *objfile; struct partial_symtab *ps; dont_repeat (); if (args == NULL) { error ("printpsyms takes an output file name and optional symbol file name"); } else if ((argv = buildargv (args)) == NULL) { nomem (0); } cleanups = make_cleanup (freeargv, (char *) 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 (free, filename); outfile = fopen (filename, "w"); if (outfile == 0) perror_with_name (filename); make_cleanup (fclose, outfile); immediate_quit++; ALL_PSYMTABS (objfile, ps) if (symname == NULL || (strcmp (symname, ps -> filename) == 0)) dump_psymtab (objfile, ps, outfile); immediate_quit--; do_cleanups (cleanups); } static void print_partial_symbol (p, count, what, outfile) struct partial_symbol *p; int count; char *what; FILE *outfile; { fprintf_filtered (outfile, " %s partial symbols:\n", what); while (count-- > 0) { fprintf_filtered (outfile, " `%s', ", SYMBOL_NAME(p)); switch (SYMBOL_NAMESPACE (p)) { case UNDEF_NAMESPACE: fputs_filtered ("undefined namespace, ", outfile); break; case VAR_NAMESPACE: /* This is the usual thing -- don't print it */ break; case STRUCT_NAMESPACE: fputs_filtered ("struct namespace, ", outfile); break; case LABEL_NAMESPACE: fputs_filtered ("label namespace, ", outfile); break; default: fputs_filtered (", ", outfile); break; } switch (SYMBOL_CLASS (p)) { case LOC_UNDEF: fputs_filtered ("undefined", outfile); break; case LOC_CONST: fputs_filtered ("constant int", outfile); break; case LOC_STATIC: fputs_filtered ("static", outfile); break; case LOC_REGISTER: fputs_filtered ("register", outfile); break; case LOC_ARG: fputs_filtered ("pass by value", outfile); break; case LOC_REF_ARG: fputs_filtered ("pass by reference", outfile); break; case LOC_REGPARM: fputs_filtered ("register parameter", outfile); break; case LOC_LOCAL: fputs_filtered ("stack parameter", outfile); break; case LOC_TYPEDEF: fputs_filtered ("type", outfile); break; case LOC_LABEL: fputs_filtered ("label", outfile); break; case LOC_BLOCK: fputs_filtered ("function", outfile); break; case LOC_CONST_BYTES: fputs_filtered ("constant bytes", outfile); break; case LOC_LOCAL_ARG: fputs_filtered ("shuffled arg", outfile); break; default: fputs_filtered ("", outfile); break; } fputs_filtered (", ", outfile); fprintf_filtered (outfile, "0x%x\n", SYMBOL_VALUE (p)); p++; } } static void printmsyms_command (args, from_tty) char *args; int from_tty; { char **argv; FILE *outfile; struct cleanup *cleanups; char *filename = DEV_TTY; char *symname = NULL; struct objfile *objfile; dont_repeat (); if (args == NULL) { error ("printmsyms takes an output file name and optional symbol file name"); } else if ((argv = buildargv (args)) == NULL) { nomem (0); } 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 (free, filename); outfile = fopen (filename, "w"); if (outfile == 0) perror_with_name (filename); make_cleanup (fclose, outfile); immediate_quit++; ALL_OBJFILES (objfile) if (symname == NULL || (strcmp (symname, objfile -> name) == 0)) dump_msymbols (objfile, outfile); immediate_quit--; fprintf_filtered (outfile, "\n\n"); do_cleanups (cleanups); } static void printobjfiles_command (ignore, from_tty) char *ignore; int from_tty; { struct objfile *objfile; dont_repeat (); immediate_quit++; ALL_OBJFILES (objfile) dump_objfile (objfile); immediate_quit--; } /* Return the nexting depth of a block within other blocks in its symtab. */ static int block_depth (block) struct block *block; { register int i = 0; while (block = BLOCK_SUPERBLOCK (block)) i++; return i; } /* Increase the space allocated for LISTP, which is probably global_psymbol_list or static_psymbol_list. This space will eventually be freed in free_objfile(). */ void extend_psymbol_list (listp, objfile) register struct psymbol_allocation_list *listp; struct objfile *objfile; { int new_size; if (listp->size == 0) { new_size = 255; listp->list = (struct partial_symbol *) xmmalloc (objfile -> md, new_size * sizeof (struct partial_symbol)); } else { new_size = listp->size * 2; listp->list = (struct partial_symbol *) xmrealloc (objfile -> md, (char *) listp->list, new_size * sizeof (struct partial_symbol)); } /* Next assumes we only went one over. Should be good if program works correctly */ listp->next = listp->list + listp->size; listp->size = new_size; } #ifdef DEBUG /* The work performed by this function is normally done by the macro ADD_PSYMBOL_TO_LIST defined in symfile.h. When debugging gdb, this function makes things easier. */ void add_psymbol_to_list (name, namelength, namespace, class, listp, psymval) char *name; int namelength; enum namespace namespace; enum address_class class; struct psymbol_allocation_list *listp; unsigned long psymval; { register struct partial_symbol *psym; if (listp -> next >= listp -> list + listp -> size) extend_psymbol_list (listp, objfile); psym = listp -> next++; SYMBOL_NAME (psym) = (char *) obstack_alloc (&objfile->psymbol_obstack, namelength + 1); memcpy (SYMBOL_NAME (psym), name, namelength); SYMBOL_NAME (psym)[namelength] = '\0'; SYMBOL_NAMESPACE (psym) = namespace; SYMBOL_CLASS (psym) = class; SYMBOL_VALUE (psym) = psymval; } /* The work performed by this function is normally done by the macro ADD_PSYMBOL_ADDR_TO_LIST defined in symfile.h. When debugging gdb, this function makes things easier. */ void add_psymbol_addr_to_list (name, namelength, namespace, class, listp, psymval) char *name; int namelength; enum namespace namespace; enum address_class class; struct psymbol_allocation_list *listp; CORE_ADDR psymval; { register struct partial_symbol *psym; if (listp -> next >= listp -> list + listp -> size) extend_psymbol_list (listp, objfile); psym = listp -> next++; SYMBOL_NAME (psym) = (char *) obstack_alloc (&objfile->psymbol_obstack, namelength + 1); memcpy (SYMBOL_NAME (psym), name, namelength); SYMBOL_NAME (psym)[namelength] = '\0'; SYMBOL_NAMESPACE (psym) = namespace; SYMBOL_CLASS (psym) = class; SYMBOL_VALUE_ADDRESS (psym) = psymval; } #endif /* DEBUG */ void _initialize_symmisc () { add_com ("printmsyms", class_obscure, printmsyms_command, "Print dump of current minimal symbol definitions to file OUTFILE.\n\ If a SOURCE file is specified, dump only that file's symbols."); add_com ("printpsyms", class_obscure, printpsyms_command, "Print dump of current partial symbol definitions to file OUTFILE.\n\ If a SOURCE file is specified, dump only that file's partial symbols."); add_com ("printsyms", class_obscure, printsyms_command, "Print dump of current symbol definitions to file OUTFILE.\n\ If a SOURCE file is specified, dump only that file's symbols."); add_com ("printobjfiles", class_obscure, printobjfiles_command, "Print dump of current object file definitions."); }