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- /* Do various things to symbol tables (other than lookup)), for GDB.
- Copyright (C) 1986, 1987, 1989 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 <stdio.h>
- #include "defs.h"
- #include "param.h"
- #include "symtab.h"
- #include "breakpoint.h"
- #include "command.h"
-
- #include <obstack.h>
-
- /* Free all the symtabs that are currently installed,
- and all storage associated with them.
- Leaves us in a consistent state with no symtabs installed. */
-
- void
- free_all_symtabs ()
- {
- register struct symtab *s, *snext;
-
- /* All values will be invalid because their types will be! */
-
- clear_value_history ();
- clear_displays ();
- clear_internalvars ();
- #if defined (CLEAR_SOLIB)
- CLEAR_SOLIB ();
- #endif
- set_default_breakpoint (0, 0, 0, 0);
-
- current_source_symtab = 0;
-
- for (s = symtab_list; s; s = snext)
- {
- snext = s->next;
- free_symtab (s);
- }
- symtab_list = 0;
- obstack_free (symbol_obstack, 0);
- obstack_init (symbol_obstack);
-
- if (misc_function_vector)
- free (misc_function_vector);
- misc_function_count = 0;
- misc_function_vector = 0;
- clear_pc_function_cache();
- }
-
- /* Free a struct block <- B and all the symbols defined in that block. */
-
- static void
- free_symtab_block (b)
- struct block *b;
- {
- register int i, n;
- n = BLOCK_NSYMS (b);
- for (i = 0; i < n; i++)
- {
- free (SYMBOL_NAME (BLOCK_SYM (b, i)));
- free (BLOCK_SYM (b, i));
- }
- free (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;
- register struct typevector *tv;
-
- 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 (BLOCKVECTOR_BLOCK (bv, i));
- /* Free the blockvector itself. */
- free (bv);
- /* Free the type vector. */
- tv = TYPEVECTOR (s);
- free (tv);
- /* Also free the linetable. */
-
- case free_linetable:
- /* Everything will be freed either by our `free_ptr'
- or by some other symbatb, except for our linetable.
- Free that now. */
- free (LINETABLE (s));
- break;
- }
-
- /* If there is a single block of memory to free, free it. */
- if (s->free_ptr)
- free (s->free_ptr);
-
- /* Free source-related stuff */
- if (s->line_charpos)
- free (s->line_charpos);
- if (s->fullname)
- free (s->fullname);
- free (s);
- }
-
- static int block_depth ();
- static void print_symbol ();
-
- void
- print_symtabs (filename)
- char *filename;
- {
- FILE *outfile;
- register struct symtab *s;
- register int i, j;
- int len, blen;
- register struct linetable *l;
- struct blockvector *bv;
- register struct block *b;
- int depth;
- struct cleanup *cleanups;
- extern int fclose();
-
- if (filename == 0)
- error_no_arg ("file to write symbol data in");
-
- filename = tilde_expand (filename);
- make_cleanup (free, filename);
-
- outfile = fopen (filename, "w");
- if (outfile == 0)
- perror_with_name (filename);
-
- cleanups = make_cleanup (fclose, outfile);
- immediate_quit++;
-
- for (s = symtab_list; s; s = s->next)
- {
- /* First print the line table. */
- fprintf (outfile, "Symtab for file %s\n\n", s->filename);
- fprintf (outfile, "Line table:\n\n");
- l = LINETABLE (s);
- 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 (s);
- 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, b);
- fprintf (outfile, "[0x%x..0x%x]", BLOCK_START (b), BLOCK_END (b));
- if (BLOCK_SUPERBLOCK (b))
- fprintf (outfile, " (under 0x%x)", 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\n");
- }
-
- 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))
- {
- type_print_1 (SYMBOL_TYPE (symbol), SYMBOL_NAME (symbol),
- outfile, 1, 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:
- fprintf (outfile, "arg at 0x%lx,", SYMBOL_VALUE (symbol));
- break;
-
- case LOC_LOCAL_ARG:
- fprintf (outfile, "arg at offset 0x%x 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:
- 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,",
- 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");
- }
-
- /* 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;
- }
-
- /*
- * Free all partial_symtab storage.
- */
- void
- free_all_psymtabs()
- {
- obstack_free (psymbol_obstack, 0);
- obstack_init (psymbol_obstack);
- partial_symtab_list = (struct partial_symtab *) 0;
- }
-
- void
- _initialize_symmisc ()
- {
- symtab_list = (struct symtab *) 0;
- partial_symtab_list = (struct partial_symtab *) 0;
-
- add_com ("printsyms", class_obscure, print_symtabs,
- "Print dump of current symbol definitions to file OUTFILE.");
- }
-
-