binutils-gdb/gdb/objfiles.c

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/* GDB routines for manipulating objfiles.
Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
2001, 2002, 2003 Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
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This file is part of GDB.
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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.
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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.
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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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This file contains support routines for creating, manipulating, and
destroying objfile structures. */
#include "defs.h"
#include "bfd.h" /* Binary File Description */
#include "symtab.h"
#include "symfile.h"
#include "objfiles.h"
#include "gdb-stabs.h"
#include "target.h"
#include "bcache.h"
#include "gdb_assert.h"
#include <sys/types.h>
#include "gdb_stat.h"
#include <fcntl.h>
#include "gdb_obstack.h"
#include "gdb_string.h"
#include "hashtab.h"
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#include "breakpoint.h"
2003-02-19 David Carlton <carlton@math.stanford.edu> * Makefile.in (SFILES): Add block.c. (block_h): New. (COMMON_OBS): Add block.o. (block.o): New. (x86-64-tdep.o): Add $(block_h). (values.o, valops.o, tracepoint.o, symtab.o, symmisc.o, symfile.o) (stack.o, printcmd.o, p-exp.tab.o, parse.o, objfiles.o) (objc-exp.tab.o, objc-lang.o, nlmread.o, mips-tdep.o, mdebugread.o) (m2-exp.tab.o, linespec.o, jv-lang.o, jv-exp.tab.o, infcmd.o) (f-valprint.o, findvar.o, f-exp.tab.o, expprint.o, coffread.o) (c-exp.tab.o, buildsym.o, breakpoint.o, blockframe.o, ax-gdb.o) (alpha-tdep.o, ada-lang.o, ada-exp.tab.o, mi-cmd-stack.o): Ditto. * value.h: Add opaque declaration for struct block. * parser-defs.h, objc-lang.h, buildsym.h, breakpoint.h: Ditto. * ada-lang.h: Ditto. * x86-64-tdep.c: #include "block.h" * values.c, valops.c, tracepoint.c, symtab.c, symmisc.c: Ditto. * symfile.c, stack.c, printcmd.c, p-exp.y, parse.c: Ditto. * objfiles.c, objc-exp.y, objc-lang.c, nlmread.c: Ditto. * mips-tdep.c, mdebugread.c, m2-exp.y, linespec.c: Ditto. * jv-lang.c, jv-exp.y, infcmd.c, f-valprint.c: Ditto. * findvar.c, f-exp.y, expprint.c, coffread.c, c-exp.y: Ditto. * buildsym.c, breakpoint.c, blockframe.c, ax-gdb.c: Ditto. * alpha-tdep.c, ada-lang.c, ada-exp.y: Ditto. * blockframe.c (blockvector_for_pc_sect): Move to "block.c". (blockvector_for_pc, block_for_pc_sect, block_for_pc): Ditto. * symtab.c (block_function): Ditto. (contained_in): Ditto. * frame.h: Move block_for_pc and block_for_pc_sect declarations to block.h. Add opaque declaration for struct block. * symtab.h: Move block_function and contained_in declarations to block.h. Add opaque declarations for struct block, struct blockvector. (struct block): Move to block.h. (struct blockvector): Ditto. (BLOCK_START, BLOCK_END, BLOCK_FUNCTION, BLOCK_SUPERBLOCK) (BLOCK_GCC_COMPILED, BLOCK_HASHTABLE, BLOCK_NSYMS, BLOCK_SYM) (BLOCK_BUCKETS, BLOCK_BUCKET, BLOCK_HASHTABLE_SIZE) (ALL_BLOCK_SYMBOLS, BLOCK_SHOULD_SORT, BLOCKVECTOR_NBLOCKS) (BLOCKVECTOR_BLOCK, GLOBAL_BLOCK, STATIC_BLOCK, FIRST_LOCAL_BLOCK): Ditto. * block.c: New file. * block.h: New file. 2003-02-19 David Carlton <carlton@math.stanford.edu> * mi-cmd-stack.c: #include "block.h"
2003-02-20 01:01:07 +01:00
#include "block.h"
2003-06-11 David Carlton <carlton@bactrian.org> * dictionary.h: New. * dictionary.c: New. * block.h: Add opaque declaration for struct dictionary. (struct block): Add 'dict' member; delete 'hashtable', 'nsyms', 'sym' members. (BLOCK_DICT): New macro. Delete macros BLOCK_HASHTABLE, BLOCK_NSYMS, BLOCK_SYM, BLOCK_BUCKETS, BLOCK_BUCKET, BLOCK_HASHTABLE_SIZE, BLOCK_SHOULD_SORT. (ALL_BLOCK_SYMBOLS): Update definition. * Makefile.in (SFILES): Add dictionary.c. (dictionary_h): New. (COMMON_OBS): Add dictionary.o. (dictionary.o): New. (ada-lang.o): Depend on dictionary_h. (buildsym.o, coffread.o, jv-lang.o, mdebugread.o, objfiles.o) (stack.o, symmisc.o, symtab.o, tracepoint.o, valops.o) (mi-cmd-stack.o): Ditto. (gdbtk-cmds.o): Update dependencies. (gdbtk-stack.o): Ditto. * ada-lang.c: Include dictionary.h. (symtab_for_sym): Update uses of ALL_BLOCK_SYMBOLS. (fill_in_ada_prototype, debug_print_block): Ditto. (ada_add_block_symbols): Update uses of ALL_BLOCK_SYMBOLS; replace explicit iteration by use of ALL_BLOCK_SYMBOLS. Delete variable 'is_sorted'. * mdebugread.c: Include dictionary.h. (struct parse_stack): Delete 'maxsyms' member. (parse_symbol): Update calls to new_block. Delete calls to shrink_block. Use dictionary methods. (psymtab_to_symtab_1): Delete calls to sort_symtab_syms. Update calls to new_symtab. Don't maintain maxsyms data. (mylookup_symbol): Update use of ALL_BLOCK_SYMBOLS. (add_symbol): Just call dict_add_symbol. (new_symtab): Delete 'maxsyms' argument. (new_symtab): Update calls to new_block. (new_block): Delete 'maxsyms' argument; add 'function' argument. (shrink_block): Delete function. (fixup_sigtramp): Update call to new_block. Add symbol via dict_add_symbol. * jv-lang.c: Include dictionary.h. (get_java_class_symtab): Set the BLOCK_DICT of the blocks appropriately. Set class_symtab->free_func. Make sure the blockvector is big enough to hold two blocks. (add_class_symtab_symbol): Use dictionary methods. (free_class_block): New function. (type_from_class): Replace explicit iteration by ALL_BLOCK_SYMBOLS. * symtab.h (struct symtab): Replace 'free_ptr' method by 'free_func'. * dwarf2read.c (psymtab_to_symtab_1): Delete call to sort_symtab_syms. * dwarfread.c (psymtab_to_symtab_1): Delete call to sort_symtab_syms. * coffread.c (coff_symfile_read): Delete call to sort_symtab_syms. Include dictionary.h. (patch_opaque_types): Update use of ALL_BLOCK_SYMBOLS. * dbxread.c (dbx_psymtab_to_symtab_1): Delete call to sort_symtab_syms. * objfiles.c: Include dictionary.h. (objfile_relocate): Update use of ALL_BLOCK_SYMBOLS. * buildsym.c: Include dictionary.h. (finish_block): Use dictionary methods. (end_symtab): Set free_func to NULL, not free_ptr. * tracepoint.c: Include dictionary.h. (add_local_symbols): Update use of ALL_BLOCK_SYMBOLS. (scope_info): Ditto. * stack.c: Include dictionary.h. (print_block_frame_locals): Update use of ALL_BLOCK_SYMBOLS. (print_block_frame_labels, print_frame_arg_vars) (print_frame_args): Ditto. * symmisc.c (free_symtab_block): Use dictionary methods. (dump_symtab): Ditto. (free_symtab): Replace use of 'free_ptr' by 'free_func'. Include dictionary.h. * symfile.h: Delete declarations of sort_block_syms, sort_symtab_syms. * symfile.c (sort_block_syms): Delete. (sort_symtab_syms): Delete. * symtab.c: Include dictionary.h. (lookup_block_symbol): Use dictionary iterators. (find_pc_sect_symtab): Update use of ALL_BLOCK_SYMBOLS. (search_symbols, make_symbol_completion_list): Ditto. (make_symbol_overload_list): Ditto. * valops.c (value_of_local): Use dict_empty. Include dictionary.h. 2003-06-11 David Carlton <carlton@bactrian.org> * generic/gdbtk-stack.c: Include dictionary.h. (gdb_block_vars): Update use of ALL_BLOCK_SYMBOLS. (gdb_get_blocks, gdb_get_vars_command): Ditto. * generic/gdbtk-cmds.c: Include dictionary.h. (gdb_listfuncs): Update use of ALL_BLOCK_SYMBOLS. 2003-06-11 David Carlton <carlton@bactrian.org> * mi-cmd-stack.c: Include dictionary.h. (list_args_or_locals): Update use of ALL_BLOCK_SYMBOLS.
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#include "dictionary.h"
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/* Prototypes for local functions */
#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
#include "mmalloc.h"
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static int open_existing_mapped_file (char *, long, int);
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static int open_mapped_file (char *filename, long mtime, int flags);
static void *map_to_file (int);
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#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
static void add_to_objfile_sections (bfd *, sec_ptr, void *);
static void objfile_alloc_data (struct objfile *objfile);
static void objfile_free_data (struct objfile *objfile);
/* Externally visible variables that are owned by this module.
See declarations in objfile.h for more info. */
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struct objfile *object_files; /* Linked list of all objfiles */
struct objfile *current_objfile; /* For symbol file being read in */
struct objfile *symfile_objfile; /* Main symbol table loaded from */
struct objfile *rt_common_objfile; /* For runtime common symbols */
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int mapped_symbol_files; /* Try to use mapped symbol files */
/* Locate all mappable sections of a BFD file.
objfile_p_char is a char * to get it through
bfd_map_over_sections; we cast it back to its proper type. */
#ifndef TARGET_KEEP_SECTION
#define TARGET_KEEP_SECTION(ASECT) 0
#endif
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/* Called via bfd_map_over_sections to build up the section table that
the objfile references. The objfile contains pointers to the start
of the table (objfile->sections) and to the first location after
the end of the table (objfile->sections_end). */
static void
add_to_objfile_sections (bfd *abfd, sec_ptr asect, void *objfile_p_char)
{
struct objfile *objfile = (struct objfile *) objfile_p_char;
struct obj_section section;
flagword aflag;
aflag = bfd_get_section_flags (abfd, asect);
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if (!(aflag & SEC_ALLOC) && !(TARGET_KEEP_SECTION (asect)))
return;
if (0 == bfd_section_size (abfd, asect))
return;
section.offset = 0;
section.objfile = objfile;
section.the_bfd_section = asect;
section.ovly_mapped = 0;
section.addr = bfd_section_vma (abfd, asect);
section.endaddr = section.addr + bfd_section_size (abfd, asect);
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obstack_grow (&objfile->psymbol_obstack, (char *) &section, sizeof (section));
objfile->sections_end = (struct obj_section *) (((unsigned long) objfile->sections_end) + 1);
}
/* Builds a section table for OBJFILE.
Returns 0 if OK, 1 on error (in which case bfd_error contains the
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error).
Note that while we are building the table, which goes into the
psymbol obstack, we hijack the sections_end pointer to instead hold
a count of the number of sections. When bfd_map_over_sections
returns, this count is used to compute the pointer to the end of
the sections table, which then overwrites the count.
Also note that the OFFSET and OVLY_MAPPED in each table entry
are initialized to zero.
Also note that if anything else writes to the psymbol obstack while
we are building the table, we're pretty much hosed. */
int
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build_objfile_section_table (struct objfile *objfile)
{
/* objfile->sections can be already set when reading a mapped symbol
file. I believe that we do need to rebuild the section table in
this case (we rebuild other things derived from the bfd), but we
can't free the old one (it's in the psymbol_obstack). So we just
waste some memory. */
objfile->sections_end = 0;
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bfd_map_over_sections (objfile->obfd, add_to_objfile_sections, (char *) objfile);
objfile->sections = (struct obj_section *)
obstack_finish (&objfile->psymbol_obstack);
objfile->sections_end = objfile->sections + (unsigned long) objfile->sections_end;
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return (0);
}
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/* Given a pointer to an initialized bfd (ABFD) and some flag bits
allocate a new objfile struct, fill it in as best we can, link it
into the list of all known objfiles, and return a pointer to the
new objfile struct.
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The FLAGS word contains various bits (OBJF_*) that can be taken as
requests for specific operations, like trying to open a mapped
version of the objfile (OBJF_MAPPED). Other bits like
OBJF_SHARED are simply copied through to the new objfile flags
member. */
/* NOTE: carlton/2003-02-04: This function is called with args NULL, 0
by jv-lang.c, to create an artificial objfile used to hold
information about dynamically-loaded Java classes. Unfortunately,
that branch of this function doesn't get tested very frequently, so
it's prone to breakage. (E.g. at one time the name was set to NULL
in that situation, which broke a loop over all names in the dynamic
library loader.) If you change this function, please try to leave
things in a consistent state even if abfd is NULL. */
struct objfile *
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allocate_objfile (bfd *abfd, int flags)
{
struct objfile *objfile = NULL;
struct objfile *last_one = NULL;
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if (mapped_symbol_files)
flags |= OBJF_MAPPED;
#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
if (abfd != NULL)
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{
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/* If we can support mapped symbol files, try to open/reopen the
mapped file that corresponds to the file from which we wish to
read symbols. If the objfile is to be mapped, we must malloc
the structure itself using the mmap version, and arrange that
all memory allocation for the objfile uses the mmap routines.
If we are reusing an existing mapped file, from which we get
our objfile pointer, we have to make sure that we update the
pointers to the alloc/free functions in the obstack, in case
these functions have moved within the current gdb. */
int fd;
fd = open_mapped_file (bfd_get_filename (abfd), bfd_get_mtime (abfd),
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flags);
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if (fd >= 0)
{
void *md;
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if ((md = map_to_file (fd)) == NULL)
{
close (fd);
}
else if ((objfile = (struct objfile *) mmalloc_getkey (md, 0)) != NULL)
{
/* Update memory corruption handler function addresses. */
init_malloc (md);
objfile->md = md;
objfile->mmfd = fd;
/* Update pointers to functions to *our* copies */
if (objfile->demangled_names_hash)
htab_set_functions_ex
(objfile->demangled_names_hash, htab_hash_string,
(int (*) (const void *, const void *)) streq, NULL,
objfile->md, xmcalloc, xmfree);
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obstack_chunkfun (&objfile->psymbol_cache.cache, xmmalloc);
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obstack_freefun (&objfile->psymbol_cache.cache, xmfree);
obstack_chunkfun (&objfile->macro_cache.cache, xmmalloc);
obstack_freefun (&objfile->macro_cache.cache, xmfree);
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obstack_chunkfun (&objfile->psymbol_obstack, xmmalloc);
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obstack_freefun (&objfile->psymbol_obstack, xmfree);
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obstack_chunkfun (&objfile->symbol_obstack, xmmalloc);
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obstack_freefun (&objfile->symbol_obstack, xmfree);
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obstack_chunkfun (&objfile->type_obstack, xmmalloc);
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obstack_freefun (&objfile->type_obstack, xmfree);
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/* If already in objfile list, unlink it. */
unlink_objfile (objfile);
/* Forget things specific to a particular gdb, may have changed. */
objfile->sf = NULL;
}
else
{
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/* Set up to detect internal memory corruption. MUST be
done before the first malloc. See comments in
init_malloc() and mmcheck(). */
init_malloc (md);
objfile = (struct objfile *)
xmmalloc (md, sizeof (struct objfile));
memset (objfile, 0, sizeof (struct objfile));
objfile->md = md;
objfile->mmfd = fd;
objfile->flags |= OBJF_MAPPED;
mmalloc_setkey (objfile->md, 0, objfile);
obstack_specify_allocation_with_arg (&objfile->psymbol_cache.cache,
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0, 0, xmmalloc, xmfree,
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objfile->md);
obstack_specify_allocation_with_arg (&objfile->macro_cache.cache,
0, 0, xmmalloc, xmfree,
objfile->md);
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obstack_specify_allocation_with_arg (&objfile->psymbol_obstack,
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0, 0, xmmalloc, xmfree,
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objfile->md);
obstack_specify_allocation_with_arg (&objfile->symbol_obstack,
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0, 0, xmmalloc, xmfree,
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objfile->md);
obstack_specify_allocation_with_arg (&objfile->type_obstack,
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0, 0, xmmalloc, xmfree,
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objfile->md);
}
}
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if ((flags & OBJF_MAPPED) && (objfile == NULL))
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{
warning ("symbol table for '%s' will not be mapped",
bfd_get_filename (abfd));
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flags &= ~OBJF_MAPPED;
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}
}
#else /* !defined(USE_MMALLOC) || !defined(HAVE_MMAP) */
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if (flags & OBJF_MAPPED)
{
warning ("mapped symbol tables are not supported on this machine; missing or broken mmap().");
/* Turn off the global flag so we don't try to do mapped symbol tables
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any more, which shuts up gdb unless the user specifically gives the
"mapped" keyword again. */
mapped_symbol_files = 0;
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flags &= ~OBJF_MAPPED;
}
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#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
/* If we don't support mapped symbol files, didn't ask for the file to be
mapped, or failed to open the mapped file for some reason, then revert
back to an unmapped objfile. */
if (objfile == NULL)
{
objfile = (struct objfile *) xmalloc (sizeof (struct objfile));
memset (objfile, 0, sizeof (struct objfile));
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objfile->md = NULL;
objfile->psymbol_cache = bcache_xmalloc ();
objfile->macro_cache = bcache_xmalloc ();
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obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, xmalloc,
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xfree);
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obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, xmalloc,
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xfree);
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obstack_specify_allocation (&objfile->type_obstack, 0, 0, xmalloc,
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xfree);
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flags &= ~OBJF_MAPPED;
terminate_minimal_symbol_table (objfile);
}
objfile_alloc_data (objfile);
/* Update the per-objfile information that comes from the bfd, ensuring
that any data that is reference is saved in the per-objfile data
region. */
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objfile->obfd = abfd;
if (objfile->name != NULL)
{
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xmfree (objfile->md, objfile->name);
}
if (abfd != NULL)
{
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objfile->name = mstrsave (objfile->md, bfd_get_filename (abfd));
objfile->mtime = bfd_get_mtime (abfd);
/* Build section table. */
if (build_objfile_section_table (objfile))
{
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error ("Can't find the file sections in `%s': %s",
objfile->name, bfd_errmsg (bfd_get_error ()));
}
}
else
{
objfile->name = mstrsave (objfile->md, "<<anonymous objfile>>");
}
/* Initialize the section indexes for this objfile, so that we can
later detect if they are used w/o being properly assigned to. */
objfile->sect_index_text = -1;
objfile->sect_index_data = -1;
objfile->sect_index_bss = -1;
objfile->sect_index_rodata = -1;
/* Add this file onto the tail of the linked list of other such files. */
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objfile->next = NULL;
if (object_files == NULL)
object_files = objfile;
else
{
for (last_one = object_files;
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last_one->next;
last_one = last_one->next);
last_one->next = objfile;
}
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/* Save passed in flag bits. */
objfile->flags |= flags;
return (objfile);
}
/* Create the terminating entry of OBJFILE's minimal symbol table.
If OBJFILE->msymbols is zero, allocate a single entry from
OBJFILE->symbol_obstack; otherwise, just initialize
OBJFILE->msymbols[OBJFILE->minimal_symbol_count]. */
void
terminate_minimal_symbol_table (struct objfile *objfile)
{
if (! objfile->msymbols)
objfile->msymbols = ((struct minimal_symbol *)
obstack_alloc (&objfile->symbol_obstack,
sizeof (objfile->msymbols[0])));
{
struct minimal_symbol *m
= &objfile->msymbols[objfile->minimal_symbol_count];
memset (m, 0, sizeof (*m));
2003-02-25 David Carlton <carlton@math.stanford.edu> * symtab.h (SYMBOL_NATURAL_NAME): New macro. (SYMBOL_LINKAGE_NAME): Ditto. (SYMBOL_PRINT_NAME): Use SYMBOL_NATURAL_NAME and SYMBOL_LINKAGE_NAME. (struct general_symbol_info): Expand comment. (DEPRECATED_SYMBOL_NAME): Rename from SYMBOL_NAME. (SYMBOL_MATCHES_NAME): Use DEPRECATED_SYMBOL_NAME. (SYMBOL_MATCHES_REGEXP): Ditto. * symtab.c (symbol_natural_name): New function. * objfiles.h: Replace all uses of SYMBOL_NAME by DEPRECATED_SYMBOL_NAME. * xcoffread.c, valops.c, typeprint.c, tracepoint.c: Ditto. * symtab.c, symmisc.c, symfile.c, stack.c, stabsread.c: Ditto. * somsolib.c, sol-thread.c, rs6000-tdep.c, p-valprint.c: Ditto. * printcmd.c, objfiles.c, objc-lang.c, mipsread.c: Ditto. * minsyms.c, mdebugread.c, linespec.c, jv-lang.c: Ditto. * i386-tdep.c, i386-linux-tdep.c, hpread.c, hppa-tdep.c: Ditto. * gnu-v2-abi.c, f-valprint.c, findvar.c, expprint.c: Ditto. * dwarfread.c, dwarf2read.c, dbxread.c, c-valprint.c: Ditto. * cp-valprint.c, coffread.c, buildsym.c, breakpoint.c: Ditto. * blockframe.c, ax-gdb.c, arm-linux-tdep.c, ada-lang.c: Ditto. * ada-exp.y: Ditto. * ada-exp.y: Update copyright. * sol-thread.c, mipsread.c, jv-lang.c, f-valprint.c: Ditto. * cp-valprint.c: Ditto. 2003-02-25 David Carlton <carlton@math.stanford.edu> * generic/gdbtk.h: Replace all instances of SYMBOL_NAME by DEPRECATED_SYMBOL_NAME. * generic/gdbtk-stack.c, generic/gdbtk-cmds.c: Ditto. * generic/gdbtk-stack.c, generic/gdbtk-cmds.c: Update copyright. 2003-02-25 David Carlton <carlton@math.stanford.edu> * mi-cmd-stack.c: Replace all instances of SYMBOL_NAME with DEPRECATED_SYMBOL_NAME. Update copyright.
2003-02-25 22:36:23 +01:00
DEPRECATED_SYMBOL_NAME (m) = NULL;
SYMBOL_VALUE_ADDRESS (m) = 0;
MSYMBOL_INFO (m) = NULL;
MSYMBOL_TYPE (m) = mst_unknown;
SYMBOL_INIT_LANGUAGE_SPECIFIC (m, language_unknown);
}
}
gdb/ChangeLog: 2003-01-23 Alexander Larsson <alexl@redhat.com> Jim Blandy <jimb@redhat.com> Add support for executables whose debug info has been separated out into a separate file, leaving only a link behind. * objfiles.h (struct objfile): New fields: separate_debug_objfile and separate_debug_objfile_backlink. (put_objfile_before): New declaration. * symfile.c: #include "filenames.h". (symbol_file_add_with_addrs_or_offsets): If this objfile has its debug info in a separate file, read that, too. Save the addrs argument, so we can use it again to read the separated debug info; syms_from_objfile modifies the table we pass it. (reread_symbols): After re-reading an objfile, call reread_separate_symbols to refresh its separate debug info objfile, if it has one. (reread_separate_symbols, find_separate_debug_file, get_debug_link_info, separate_debug_file_exists): New functions. (debug_file_directory): New global var. (_initialize_symfile): Initialize debug_file_directory, and provide the new `set debug-file-directory' command to let the user change it. * objfiles.c (free_objfile): If this objfile has its debug info in a separate objfile, free that one too. If this is itself a separate debug info objfile, clear our parent's backlink. (put_objfile_before): New function. * utils.c (gnu_debuglink_crc32): New function. * defs.h (gnu_debuglink_crc32): New declaration. * Makefile.in (symfile.o): Note dependency on "filenames.h". * configure.in: Handle --with-separate-debug-dir config option. * acinclude.m4 (AC_DEFINE_DIR): New macro. * acconfig.h (DEBUGDIR): New macro. * configure, aclocal.m4, config.in: Regenerated. gdb/doc/ChangeLog: 2003-01-23 Jim Blandy <jimb@redhat.com> * gdb.texinfo (Separate Debug Files): New section.
2003-01-24 00:03:32 +01:00
/* Put one object file before a specified on in the global list.
This can be used to make sure an object file is destroyed before
another when using ALL_OBJFILES_SAFE to free all objfiles. */
void
put_objfile_before (struct objfile *objfile, struct objfile *before_this)
{
struct objfile **objp;
unlink_objfile (objfile);
for (objp = &object_files; *objp != NULL; objp = &((*objp)->next))
{
if (*objp == before_this)
{
objfile->next = *objp;
*objp = objfile;
return;
}
}
internal_error (__FILE__, __LINE__,
"put_objfile_before: before objfile not in list");
}
/* Put OBJFILE at the front of the list. */
void
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objfile_to_front (struct objfile *objfile)
{
struct objfile **objp;
for (objp = &object_files; *objp != NULL; objp = &((*objp)->next))
{
if (*objp == objfile)
{
/* Unhook it from where it is. */
*objp = objfile->next;
/* Put it in the front. */
objfile->next = object_files;
object_files = objfile;
break;
}
}
}
/* Unlink OBJFILE from the list of known objfiles, if it is found in the
list.
It is not a bug, or error, to call this function if OBJFILE is not known
to be in the current list. This is done in the case of mapped objfiles,
for example, just to ensure that the mapped objfile doesn't appear twice
in the list. Since the list is threaded, linking in a mapped objfile
twice would create a circular list.
If OBJFILE turns out to be in the list, we zap it's NEXT pointer after
unlinking it, just to ensure that we have completely severed any linkages
between the OBJFILE and the list. */
void
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unlink_objfile (struct objfile *objfile)
{
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struct objfile **objpp;
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for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp)->next))
{
1999-07-07 22:19:36 +02:00
if (*objpp == objfile)
{
1999-07-07 22:19:36 +02:00
*objpp = (*objpp)->next;
objfile->next = NULL;
Deal with the inferior unloading shared objects. * solib.c (current_sos): New function, replacing find_solib. (find_solib): Deleted. (free_so): New function. (clear_solib): Call free_so, instead of writing it out. (solib_add): Rewritten: compare the inferior's current list of shared objects with GDB's list, and do the required loads and unloads. (info_sharedlibrary_command, solib_address): Don't use find_solib to walk the list of shared libraries: call solib_add, and then walk the list at so_list_head normally. * objfiles.c (free_objfile): Don't call CLEAR_SOLIB, and don't detach the core target. These tasks are taken care of elsewhere. * target.c (remove_target_sections): New function. * target.h (remove_target_sections): New declaration. * solib.c (symbol_add_stub): Check whether we've already created an objfile for this shared object first, before doing all that work to compute section addresses, etc. * objfiles.c (unlink_objfile): Report an internal error if objfile doesn't occur in the object_files list. * solib.c (special_symbol_handling): Delete argument; it's not used. * solib.c (SOLIB_EXTRACT_ADDRESS): New macro to extract addresses from solib structures. Use it throughout solib.c, get rid of all CORE_ADDR casts. (struct so_list): Change type of lmaddr to CORE_ADDR. (first_link_map_member): Change return value type to CORE_ADDR, update callers. (solib_add_common_symbols): Change parameter type to CORE_ADDR, update callers. (open_symbol_file_object, find_solib): Change type of lm variable to CORE_ADDR.
2000-03-15 17:55:07 +01:00
return;
}
}
Deal with the inferior unloading shared objects. * solib.c (current_sos): New function, replacing find_solib. (find_solib): Deleted. (free_so): New function. (clear_solib): Call free_so, instead of writing it out. (solib_add): Rewritten: compare the inferior's current list of shared objects with GDB's list, and do the required loads and unloads. (info_sharedlibrary_command, solib_address): Don't use find_solib to walk the list of shared libraries: call solib_add, and then walk the list at so_list_head normally. * objfiles.c (free_objfile): Don't call CLEAR_SOLIB, and don't detach the core target. These tasks are taken care of elsewhere. * target.c (remove_target_sections): New function. * target.h (remove_target_sections): New declaration. * solib.c (symbol_add_stub): Check whether we've already created an objfile for this shared object first, before doing all that work to compute section addresses, etc. * objfiles.c (unlink_objfile): Report an internal error if objfile doesn't occur in the object_files list. * solib.c (special_symbol_handling): Delete argument; it's not used. * solib.c (SOLIB_EXTRACT_ADDRESS): New macro to extract addresses from solib structures. Use it throughout solib.c, get rid of all CORE_ADDR casts. (struct so_list): Change type of lmaddr to CORE_ADDR. (first_link_map_member): Change return value type to CORE_ADDR, update callers. (solib_add_common_symbols): Change parameter type to CORE_ADDR, update callers. (open_symbol_file_object, find_solib): Change type of lm variable to CORE_ADDR.
2000-03-15 17:55:07 +01:00
internal_error (__FILE__, __LINE__,
"unlink_objfile: objfile already unlinked");
}
/* Destroy an objfile and all the symtabs and psymtabs under it. Note
that as much as possible is allocated on the symbol_obstack and
psymbol_obstack, so that the memory can be efficiently freed.
Things which we do NOT free because they are not in malloc'd memory
or not in memory specific to the objfile include:
1999-07-07 22:19:36 +02:00
objfile -> sf
FIXME: If the objfile is using reusable symbol information (via mmalloc),
then we need to take into account the fact that more than one process
may be using the symbol information at the same time (when mmalloc is
extended to support cooperative locking). When more than one process
is using the mapped symbol info, we need to be more careful about when
we free objects in the reusable area. */
void
2000-07-30 03:48:28 +02:00
free_objfile (struct objfile *objfile)
{
gdb/ChangeLog: 2003-01-23 Alexander Larsson <alexl@redhat.com> Jim Blandy <jimb@redhat.com> Add support for executables whose debug info has been separated out into a separate file, leaving only a link behind. * objfiles.h (struct objfile): New fields: separate_debug_objfile and separate_debug_objfile_backlink. (put_objfile_before): New declaration. * symfile.c: #include "filenames.h". (symbol_file_add_with_addrs_or_offsets): If this objfile has its debug info in a separate file, read that, too. Save the addrs argument, so we can use it again to read the separated debug info; syms_from_objfile modifies the table we pass it. (reread_symbols): After re-reading an objfile, call reread_separate_symbols to refresh its separate debug info objfile, if it has one. (reread_separate_symbols, find_separate_debug_file, get_debug_link_info, separate_debug_file_exists): New functions. (debug_file_directory): New global var. (_initialize_symfile): Initialize debug_file_directory, and provide the new `set debug-file-directory' command to let the user change it. * objfiles.c (free_objfile): If this objfile has its debug info in a separate objfile, free that one too. If this is itself a separate debug info objfile, clear our parent's backlink. (put_objfile_before): New function. * utils.c (gnu_debuglink_crc32): New function. * defs.h (gnu_debuglink_crc32): New declaration. * Makefile.in (symfile.o): Note dependency on "filenames.h". * configure.in: Handle --with-separate-debug-dir config option. * acinclude.m4 (AC_DEFINE_DIR): New macro. * acconfig.h (DEBUGDIR): New macro. * configure, aclocal.m4, config.in: Regenerated. gdb/doc/ChangeLog: 2003-01-23 Jim Blandy <jimb@redhat.com> * gdb.texinfo (Separate Debug Files): New section.
2003-01-24 00:03:32 +01:00
if (objfile->separate_debug_objfile)
{
free_objfile (objfile->separate_debug_objfile);
}
if (objfile->separate_debug_objfile_backlink)
{
/* We freed the separate debug file, make sure the base objfile
doesn't reference it. */
objfile->separate_debug_objfile_backlink->separate_debug_objfile = NULL;
}
/* First do any symbol file specific actions required when we are
finished with a particular symbol file. Note that if the objfile
is using reusable symbol information (via mmalloc) then each of
these routines is responsible for doing the correct thing, either
freeing things which are valid only during this particular gdb
execution, or leaving them to be reused during the next one. */
1999-07-07 22:19:36 +02:00
if (objfile->sf != NULL)
{
1999-07-07 22:19:36 +02:00
(*objfile->sf->sym_finish) (objfile);
}
/* We always close the bfd. */
1999-07-07 22:19:36 +02:00
if (objfile->obfd != NULL)
{
char *name = bfd_get_filename (objfile->obfd);
1999-07-07 22:19:36 +02:00
if (!bfd_close (objfile->obfd))
warning ("cannot close \"%s\": %s",
name, bfd_errmsg (bfd_get_error ()));
2000-12-15 02:01:51 +01:00
xfree (name);
}
/* Remove it from the chain of all objfiles. */
unlink_objfile (objfile);
/* If we are going to free the runtime common objfile, mark it
as unallocated. */
if (objfile == rt_common_objfile)
rt_common_objfile = NULL;
/* Before the symbol table code was redone to make it easier to
selectively load and remove information particular to a specific
linkage unit, gdb used to do these things whenever the monolithic
symbol table was blown away. How much still needs to be done
is unknown, but we play it safe for now and keep each action until
it is shown to be no longer needed. */
1999-07-07 22:19:36 +02:00
/* I *think* all our callers call clear_symtab_users. If so, no need
to call this here. */
clear_pc_function_cache ();
/* The last thing we do is free the objfile struct itself for the
2001-12-02 23:38:23 +01:00
non-reusable case, or detach from the mapped file for the
reusable case. Note that the mmalloc_detach or the xmfree() is
the last thing we can do with this objfile. */
#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
1999-07-07 22:19:36 +02:00
if (objfile->flags & OBJF_MAPPED)
{
/* Remember the fd so we can close it. We can't close it before
1999-07-07 22:19:36 +02:00
doing the detach, and after the detach the objfile is gone. */
int mmfd;
1999-07-07 22:19:36 +02:00
mmfd = objfile->mmfd;
mmalloc_detach (objfile->md);
objfile = NULL;
close (mmfd);
}
1999-07-07 22:19:36 +02:00
#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
/* If we still have an objfile, then either we don't support reusable
objfiles or this one was not reusable. So free it normally. */
if (objfile != NULL)
{
objfile_free_data (objfile);
1999-07-07 22:19:36 +02:00
if (objfile->name != NULL)
{
2001-12-02 23:38:23 +01:00
xmfree (objfile->md, objfile->name);
}
if (objfile->global_psymbols.list)
2001-12-02 23:38:23 +01:00
xmfree (objfile->md, objfile->global_psymbols.list);
if (objfile->static_psymbols.list)
2001-12-02 23:38:23 +01:00
xmfree (objfile->md, objfile->static_psymbols.list);
/* Free the obstacks for non-reusable objfiles */
bcache_xfree (objfile->psymbol_cache);
bcache_xfree (objfile->macro_cache);
if (objfile->demangled_names_hash)
htab_delete (objfile->demangled_names_hash);
1999-07-07 22:19:36 +02:00
obstack_free (&objfile->psymbol_obstack, 0);
obstack_free (&objfile->symbol_obstack, 0);
obstack_free (&objfile->type_obstack, 0);
2001-12-02 23:38:23 +01:00
xmfree (objfile->md, objfile);
objfile = NULL;
}
}
2000-05-22 11:02:23 +02:00
static void
do_free_objfile_cleanup (void *obj)
{
free_objfile (obj);
}
struct cleanup *
make_cleanup_free_objfile (struct objfile *obj)
{
return make_cleanup (do_free_objfile_cleanup, obj);
}
/* Free all the object files at once and clean up their users. */
void
2000-07-30 03:48:28 +02:00
free_all_objfiles (void)
{
struct objfile *objfile, *temp;
ALL_OBJFILES_SAFE (objfile, temp)
1999-07-07 22:19:36 +02:00
{
free_objfile (objfile);
}
clear_symtab_users ();
}
/* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS
entries in new_offsets. */
void
2000-07-30 03:48:28 +02:00
objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets)
{
1999-09-09 02:02:17 +02:00
struct section_offsets *delta =
((struct section_offsets *)
alloca (SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)));
{
int i;
int something_changed = 0;
for (i = 0; i < objfile->num_sections; ++i)
{
delta->offsets[i] =
ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i);
if (ANOFFSET (delta, i) != 0)
something_changed = 1;
}
if (!something_changed)
return;
}
/* OK, get all the symtabs. */
{
struct symtab *s;
ALL_OBJFILE_SYMTABS (objfile, s)
1999-07-07 22:19:36 +02:00
{
struct linetable *l;
struct blockvector *bv;
int i;
/* First the line table. */
l = LINETABLE (s);
if (l)
{
for (i = 0; i < l->nitems; ++i)
l->item[i].pc += ANOFFSET (delta, s->block_line_section);
}
1999-07-07 22:19:36 +02:00
/* Don't relocate a shared blockvector more than once. */
if (!s->primary)
continue;
1999-07-07 22:19:36 +02:00
bv = BLOCKVECTOR (s);
for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i)
{
struct block *b;
struct symbol *sym;
2003-06-11 David Carlton <carlton@bactrian.org> * dictionary.h: New. * dictionary.c: New. * block.h: Add opaque declaration for struct dictionary. (struct block): Add 'dict' member; delete 'hashtable', 'nsyms', 'sym' members. (BLOCK_DICT): New macro. Delete macros BLOCK_HASHTABLE, BLOCK_NSYMS, BLOCK_SYM, BLOCK_BUCKETS, BLOCK_BUCKET, BLOCK_HASHTABLE_SIZE, BLOCK_SHOULD_SORT. (ALL_BLOCK_SYMBOLS): Update definition. * Makefile.in (SFILES): Add dictionary.c. (dictionary_h): New. (COMMON_OBS): Add dictionary.o. (dictionary.o): New. (ada-lang.o): Depend on dictionary_h. (buildsym.o, coffread.o, jv-lang.o, mdebugread.o, objfiles.o) (stack.o, symmisc.o, symtab.o, tracepoint.o, valops.o) (mi-cmd-stack.o): Ditto. (gdbtk-cmds.o): Update dependencies. (gdbtk-stack.o): Ditto. * ada-lang.c: Include dictionary.h. (symtab_for_sym): Update uses of ALL_BLOCK_SYMBOLS. (fill_in_ada_prototype, debug_print_block): Ditto. (ada_add_block_symbols): Update uses of ALL_BLOCK_SYMBOLS; replace explicit iteration by use of ALL_BLOCK_SYMBOLS. Delete variable 'is_sorted'. * mdebugread.c: Include dictionary.h. (struct parse_stack): Delete 'maxsyms' member. (parse_symbol): Update calls to new_block. Delete calls to shrink_block. Use dictionary methods. (psymtab_to_symtab_1): Delete calls to sort_symtab_syms. Update calls to new_symtab. Don't maintain maxsyms data. (mylookup_symbol): Update use of ALL_BLOCK_SYMBOLS. (add_symbol): Just call dict_add_symbol. (new_symtab): Delete 'maxsyms' argument. (new_symtab): Update calls to new_block. (new_block): Delete 'maxsyms' argument; add 'function' argument. (shrink_block): Delete function. (fixup_sigtramp): Update call to new_block. Add symbol via dict_add_symbol. * jv-lang.c: Include dictionary.h. (get_java_class_symtab): Set the BLOCK_DICT of the blocks appropriately. Set class_symtab->free_func. Make sure the blockvector is big enough to hold two blocks. (add_class_symtab_symbol): Use dictionary methods. (free_class_block): New function. (type_from_class): Replace explicit iteration by ALL_BLOCK_SYMBOLS. * symtab.h (struct symtab): Replace 'free_ptr' method by 'free_func'. * dwarf2read.c (psymtab_to_symtab_1): Delete call to sort_symtab_syms. * dwarfread.c (psymtab_to_symtab_1): Delete call to sort_symtab_syms. * coffread.c (coff_symfile_read): Delete call to sort_symtab_syms. Include dictionary.h. (patch_opaque_types): Update use of ALL_BLOCK_SYMBOLS. * dbxread.c (dbx_psymtab_to_symtab_1): Delete call to sort_symtab_syms. * objfiles.c: Include dictionary.h. (objfile_relocate): Update use of ALL_BLOCK_SYMBOLS. * buildsym.c: Include dictionary.h. (finish_block): Use dictionary methods. (end_symtab): Set free_func to NULL, not free_ptr. * tracepoint.c: Include dictionary.h. (add_local_symbols): Update use of ALL_BLOCK_SYMBOLS. (scope_info): Ditto. * stack.c: Include dictionary.h. (print_block_frame_locals): Update use of ALL_BLOCK_SYMBOLS. (print_block_frame_labels, print_frame_arg_vars) (print_frame_args): Ditto. * symmisc.c (free_symtab_block): Use dictionary methods. (dump_symtab): Ditto. (free_symtab): Replace use of 'free_ptr' by 'free_func'. Include dictionary.h. * symfile.h: Delete declarations of sort_block_syms, sort_symtab_syms. * symfile.c (sort_block_syms): Delete. (sort_symtab_syms): Delete. * symtab.c: Include dictionary.h. (lookup_block_symbol): Use dictionary iterators. (find_pc_sect_symtab): Update use of ALL_BLOCK_SYMBOLS. (search_symbols, make_symbol_completion_list): Ditto. (make_symbol_overload_list): Ditto. * valops.c (value_of_local): Use dict_empty. Include dictionary.h. 2003-06-11 David Carlton <carlton@bactrian.org> * generic/gdbtk-stack.c: Include dictionary.h. (gdb_block_vars): Update use of ALL_BLOCK_SYMBOLS. (gdb_get_blocks, gdb_get_vars_command): Ditto. * generic/gdbtk-cmds.c: Include dictionary.h. (gdb_listfuncs): Update use of ALL_BLOCK_SYMBOLS. 2003-06-11 David Carlton <carlton@bactrian.org> * mi-cmd-stack.c: Include dictionary.h. (list_args_or_locals): Update use of ALL_BLOCK_SYMBOLS.
2003-06-12 01:29:49 +02:00
struct dict_iterator iter;
1999-07-07 22:19:36 +02:00
b = BLOCKVECTOR_BLOCK (bv, i);
BLOCK_START (b) += ANOFFSET (delta, s->block_line_section);
BLOCK_END (b) += ANOFFSET (delta, s->block_line_section);
2003-06-11 David Carlton <carlton@bactrian.org> * dictionary.h: New. * dictionary.c: New. * block.h: Add opaque declaration for struct dictionary. (struct block): Add 'dict' member; delete 'hashtable', 'nsyms', 'sym' members. (BLOCK_DICT): New macro. Delete macros BLOCK_HASHTABLE, BLOCK_NSYMS, BLOCK_SYM, BLOCK_BUCKETS, BLOCK_BUCKET, BLOCK_HASHTABLE_SIZE, BLOCK_SHOULD_SORT. (ALL_BLOCK_SYMBOLS): Update definition. * Makefile.in (SFILES): Add dictionary.c. (dictionary_h): New. (COMMON_OBS): Add dictionary.o. (dictionary.o): New. (ada-lang.o): Depend on dictionary_h. (buildsym.o, coffread.o, jv-lang.o, mdebugread.o, objfiles.o) (stack.o, symmisc.o, symtab.o, tracepoint.o, valops.o) (mi-cmd-stack.o): Ditto. (gdbtk-cmds.o): Update dependencies. (gdbtk-stack.o): Ditto. * ada-lang.c: Include dictionary.h. (symtab_for_sym): Update uses of ALL_BLOCK_SYMBOLS. (fill_in_ada_prototype, debug_print_block): Ditto. (ada_add_block_symbols): Update uses of ALL_BLOCK_SYMBOLS; replace explicit iteration by use of ALL_BLOCK_SYMBOLS. Delete variable 'is_sorted'. * mdebugread.c: Include dictionary.h. (struct parse_stack): Delete 'maxsyms' member. (parse_symbol): Update calls to new_block. Delete calls to shrink_block. Use dictionary methods. (psymtab_to_symtab_1): Delete calls to sort_symtab_syms. Update calls to new_symtab. Don't maintain maxsyms data. (mylookup_symbol): Update use of ALL_BLOCK_SYMBOLS. (add_symbol): Just call dict_add_symbol. (new_symtab): Delete 'maxsyms' argument. (new_symtab): Update calls to new_block. (new_block): Delete 'maxsyms' argument; add 'function' argument. (shrink_block): Delete function. (fixup_sigtramp): Update call to new_block. Add symbol via dict_add_symbol. * jv-lang.c: Include dictionary.h. (get_java_class_symtab): Set the BLOCK_DICT of the blocks appropriately. Set class_symtab->free_func. Make sure the blockvector is big enough to hold two blocks. (add_class_symtab_symbol): Use dictionary methods. (free_class_block): New function. (type_from_class): Replace explicit iteration by ALL_BLOCK_SYMBOLS. * symtab.h (struct symtab): Replace 'free_ptr' method by 'free_func'. * dwarf2read.c (psymtab_to_symtab_1): Delete call to sort_symtab_syms. * dwarfread.c (psymtab_to_symtab_1): Delete call to sort_symtab_syms. * coffread.c (coff_symfile_read): Delete call to sort_symtab_syms. Include dictionary.h. (patch_opaque_types): Update use of ALL_BLOCK_SYMBOLS. * dbxread.c (dbx_psymtab_to_symtab_1): Delete call to sort_symtab_syms. * objfiles.c: Include dictionary.h. (objfile_relocate): Update use of ALL_BLOCK_SYMBOLS. * buildsym.c: Include dictionary.h. (finish_block): Use dictionary methods. (end_symtab): Set free_func to NULL, not free_ptr. * tracepoint.c: Include dictionary.h. (add_local_symbols): Update use of ALL_BLOCK_SYMBOLS. (scope_info): Ditto. * stack.c: Include dictionary.h. (print_block_frame_locals): Update use of ALL_BLOCK_SYMBOLS. (print_block_frame_labels, print_frame_arg_vars) (print_frame_args): Ditto. * symmisc.c (free_symtab_block): Use dictionary methods. (dump_symtab): Ditto. (free_symtab): Replace use of 'free_ptr' by 'free_func'. Include dictionary.h. * symfile.h: Delete declarations of sort_block_syms, sort_symtab_syms. * symfile.c (sort_block_syms): Delete. (sort_symtab_syms): Delete. * symtab.c: Include dictionary.h. (lookup_block_symbol): Use dictionary iterators. (find_pc_sect_symtab): Update use of ALL_BLOCK_SYMBOLS. (search_symbols, make_symbol_completion_list): Ditto. (make_symbol_overload_list): Ditto. * valops.c (value_of_local): Use dict_empty. Include dictionary.h. 2003-06-11 David Carlton <carlton@bactrian.org> * generic/gdbtk-stack.c: Include dictionary.h. (gdb_block_vars): Update use of ALL_BLOCK_SYMBOLS. (gdb_get_blocks, gdb_get_vars_command): Ditto. * generic/gdbtk-cmds.c: Include dictionary.h. (gdb_listfuncs): Update use of ALL_BLOCK_SYMBOLS. 2003-06-11 David Carlton <carlton@bactrian.org> * mi-cmd-stack.c: Include dictionary.h. (list_args_or_locals): Update use of ALL_BLOCK_SYMBOLS.
2003-06-12 01:29:49 +02:00
ALL_BLOCK_SYMBOLS (b, iter, sym)
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{
fixup_symbol_section (sym, objfile);
1999-07-07 22:19:36 +02:00
/* The RS6000 code from which this was taken skipped
any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN.
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But I'm leaving out that test, on the theory that
they can't possibly pass the tests below. */
if ((SYMBOL_CLASS (sym) == LOC_LABEL
|| SYMBOL_CLASS (sym) == LOC_STATIC
|| SYMBOL_CLASS (sym) == LOC_INDIRECT)
&& SYMBOL_SECTION (sym) >= 0)
{
SYMBOL_VALUE_ADDRESS (sym) +=
ANOFFSET (delta, SYMBOL_SECTION (sym));
}
#ifdef MIPS_EFI_SYMBOL_NAME
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/* Relocate Extra Function Info for ecoff. */
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else if (SYMBOL_CLASS (sym) == LOC_CONST
&& SYMBOL_DOMAIN (sym) == LABEL_DOMAIN
2003-02-25 David Carlton <carlton@math.stanford.edu> * symtab.h (SYMBOL_NATURAL_NAME): New macro. (SYMBOL_LINKAGE_NAME): Ditto. (SYMBOL_PRINT_NAME): Use SYMBOL_NATURAL_NAME and SYMBOL_LINKAGE_NAME. (struct general_symbol_info): Expand comment. (DEPRECATED_SYMBOL_NAME): Rename from SYMBOL_NAME. (SYMBOL_MATCHES_NAME): Use DEPRECATED_SYMBOL_NAME. (SYMBOL_MATCHES_REGEXP): Ditto. * symtab.c (symbol_natural_name): New function. * objfiles.h: Replace all uses of SYMBOL_NAME by DEPRECATED_SYMBOL_NAME. * xcoffread.c, valops.c, typeprint.c, tracepoint.c: Ditto. * symtab.c, symmisc.c, symfile.c, stack.c, stabsread.c: Ditto. * somsolib.c, sol-thread.c, rs6000-tdep.c, p-valprint.c: Ditto. * printcmd.c, objfiles.c, objc-lang.c, mipsread.c: Ditto. * minsyms.c, mdebugread.c, linespec.c, jv-lang.c: Ditto. * i386-tdep.c, i386-linux-tdep.c, hpread.c, hppa-tdep.c: Ditto. * gnu-v2-abi.c, f-valprint.c, findvar.c, expprint.c: Ditto. * dwarfread.c, dwarf2read.c, dbxread.c, c-valprint.c: Ditto. * cp-valprint.c, coffread.c, buildsym.c, breakpoint.c: Ditto. * blockframe.c, ax-gdb.c, arm-linux-tdep.c, ada-lang.c: Ditto. * ada-exp.y: Ditto. * ada-exp.y: Update copyright. * sol-thread.c, mipsread.c, jv-lang.c, f-valprint.c: Ditto. * cp-valprint.c: Ditto. 2003-02-25 David Carlton <carlton@math.stanford.edu> * generic/gdbtk.h: Replace all instances of SYMBOL_NAME by DEPRECATED_SYMBOL_NAME. * generic/gdbtk-stack.c, generic/gdbtk-cmds.c: Ditto. * generic/gdbtk-stack.c, generic/gdbtk-cmds.c: Update copyright. 2003-02-25 David Carlton <carlton@math.stanford.edu> * mi-cmd-stack.c: Replace all instances of SYMBOL_NAME with DEPRECATED_SYMBOL_NAME. Update copyright.
2003-02-25 22:36:23 +01:00
&& strcmp (DEPRECATED_SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0)
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ecoff_relocate_efi (sym, ANOFFSET (delta,
s->block_line_section));
#endif
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}
}
}
}
{
struct partial_symtab *p;
ALL_OBJFILE_PSYMTABS (objfile, p)
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{
p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
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}
}
{
struct partial_symbol **psym;
for (psym = objfile->global_psymbols.list;
psym < objfile->global_psymbols.next;
psym++)
{
fixup_psymbol_section (*psym, objfile);
if (SYMBOL_SECTION (*psym) >= 0)
SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
SYMBOL_SECTION (*psym));
}
for (psym = objfile->static_psymbols.list;
psym < objfile->static_psymbols.next;
psym++)
{
fixup_psymbol_section (*psym, objfile);
if (SYMBOL_SECTION (*psym) >= 0)
SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta,
SYMBOL_SECTION (*psym));
}
}
{
struct minimal_symbol *msym;
ALL_OBJFILE_MSYMBOLS (objfile, msym)
if (SYMBOL_SECTION (msym) >= 0)
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SYMBOL_VALUE_ADDRESS (msym) += ANOFFSET (delta, SYMBOL_SECTION (msym));
}
/* Relocating different sections by different amounts may cause the symbols
to be out of order. */
msymbols_sort (objfile);
{
int i;
for (i = 0; i < objfile->num_sections; ++i)
(objfile->section_offsets)->offsets[i] = ANOFFSET (new_offsets, i);
}
if (objfile->ei.entry_point != ~(CORE_ADDR) 0)
{
/* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT
only as a fallback. */
struct obj_section *s;
s = find_pc_section (objfile->ei.entry_point);
if (s)
objfile->ei.entry_point += ANOFFSET (delta, s->the_bfd_section->index);
else
objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
}
{
struct obj_section *s;
bfd *abfd;
abfd = objfile->obfd;
1999-08-09 23:36:23 +02:00
ALL_OBJFILE_OSECTIONS (objfile, s)
{
int idx = s->the_bfd_section->index;
s->addr += ANOFFSET (delta, idx);
s->endaddr += ANOFFSET (delta, idx);
}
}
if (objfile->ei.entry_func_lowpc != INVALID_ENTRY_LOWPC)
{
objfile->ei.entry_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
objfile->ei.entry_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
}
if (objfile->ei.entry_file_lowpc != INVALID_ENTRY_LOWPC)
{
objfile->ei.entry_file_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
objfile->ei.entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
}
if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC)
{
objfile->ei.main_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
objfile->ei.main_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
}
/* Relocate breakpoints as necessary, after things are relocated. */
breakpoint_re_set ();
}
/* Many places in gdb want to test just to see if we have any partial
symbols available. This function returns zero if none are currently
available, nonzero otherwise. */
int
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have_partial_symbols (void)
{
struct objfile *ofp;
ALL_OBJFILES (ofp)
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{
if (ofp->psymtabs != NULL)
{
return 1;
}
}
return 0;
}
/* Many places in gdb want to test just to see if we have any full
symbols available. This function returns zero if none are currently
available, nonzero otherwise. */
int
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have_full_symbols (void)
{
struct objfile *ofp;
ALL_OBJFILES (ofp)
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{
if (ofp->symtabs != NULL)
{
return 1;
}
}
return 0;
}
/* This operations deletes all objfile entries that represent solibs that
weren't explicitly loaded by the user, via e.g., the add-symbol-file
command.
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*/
void
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objfile_purge_solibs (void)
{
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struct objfile *objf;
struct objfile *temp;
ALL_OBJFILES_SAFE (objf, temp)
{
/* We assume that the solib package has been purged already, or will
be soon.
1999-07-07 22:19:36 +02:00
*/
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if (!(objf->flags & OBJF_USERLOADED) && (objf->flags & OBJF_SHARED))
free_objfile (objf);
}
}
/* Many places in gdb want to test just to see if we have any minimal
symbols available. This function returns zero if none are currently
available, nonzero otherwise. */
int
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have_minimal_symbols (void)
{
struct objfile *ofp;
ALL_OBJFILES (ofp)
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{
if (ofp->minimal_symbol_count > 0)
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{
return 1;
}
}
return 0;
}
#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
/* Given the name of a mapped symbol file in SYMSFILENAME, and the timestamp
of the corresponding symbol file in MTIME, try to open an existing file
with the name SYMSFILENAME and verify it is more recent than the base
file by checking it's timestamp against MTIME.
If SYMSFILENAME does not exist (or can't be stat'd), simply returns -1.
If SYMSFILENAME does exist, but is out of date, we check to see if the
user has specified creation of a mapped file. If so, we don't issue
any warning message because we will be creating a new mapped file anyway,
overwriting the old one. If not, then we issue a warning message so that
the user will know why we aren't using this existing mapped symbol file.
In either case, we return -1.
If SYMSFILENAME does exist and is not out of date, but can't be opened for
some reason, then prints an appropriate system error message and returns -1.
Otherwise, returns the open file descriptor. */
static int
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open_existing_mapped_file (char *symsfilename, long mtime, int flags)
{
int fd = -1;
struct stat sbuf;
if (stat (symsfilename, &sbuf) == 0)
{
if (sbuf.st_mtime < mtime)
{
1999-10-12 06:37:53 +02:00
if (!(flags & OBJF_MAPPED))
{
warning ("mapped symbol file `%s' is out of date, ignored it",
symsfilename);
}
}
else if ((fd = open (symsfilename, O_RDWR)) < 0)
{
if (error_pre_print)
{
printf_unfiltered (error_pre_print);
}
print_sys_errmsg (symsfilename, errno);
}
}
return (fd);
}
/* Look for a mapped symbol file that corresponds to FILENAME and is more
recent than MTIME. If MAPPED is nonzero, the user has asked that gdb
use a mapped symbol file for this file, so create a new one if one does
not currently exist.
If found, then return an open file descriptor for the file, otherwise
return -1.
This routine is responsible for implementing the policy that generates
the name of the mapped symbol file from the name of a file containing
symbols that gdb would like to read. Currently this policy is to append
".syms" to the name of the file.
This routine is also responsible for implementing the policy that
determines where the mapped symbol file is found (the search path).
This policy is that when reading an existing mapped file, a file of
the correct name in the current directory takes precedence over a
file of the correct name in the same directory as the symbol file.
When creating a new mapped file, it is always created in the current
directory. This helps to minimize the chances of a user unknowingly
creating big mapped files in places like /bin and /usr/local/bin, and
allows a local copy to override a manually installed global copy (in
/bin for example). */
static int
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open_mapped_file (char *filename, long mtime, int flags)
{
int fd;
char *symsfilename;
/* First try to open an existing file in the current directory, and
then try the directory where the symbol file is located. */
2001-07-05 23:32:39 +02:00
symsfilename = concat ("./", lbasename (filename), ".syms", (char *) NULL);
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if ((fd = open_existing_mapped_file (symsfilename, mtime, flags)) < 0)
{
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xfree (symsfilename);
symsfilename = concat (filename, ".syms", (char *) NULL);
fd = open_existing_mapped_file (symsfilename, mtime, flags);
}
/* If we don't have an open file by now, then either the file does not
already exist, or the base file has changed since it was created. In
either case, if the user has specified use of a mapped file, then
create a new mapped file, truncating any existing one. If we can't
create one, print a system error message saying why we can't.
By default the file is rw for everyone, with the user's umask taking
care of turning off the permissions the user wants off. */
if ((fd < 0) && (flags & OBJF_MAPPED))
{
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xfree (symsfilename);
2001-07-05 23:32:39 +02:00
symsfilename = concat ("./", lbasename (filename), ".syms",
(char *) NULL);
if ((fd = open (symsfilename, O_RDWR | O_CREAT | O_TRUNC, 0666)) < 0)
{
if (error_pre_print)
{
printf_unfiltered (error_pre_print);
}
print_sys_errmsg (symsfilename, errno);
}
}
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xfree (symsfilename);
return (fd);
}
static void *
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map_to_file (int fd)
{
void *md;
CORE_ADDR mapto;
md = mmalloc_attach (fd, 0);
if (md != NULL)
{
mapto = (CORE_ADDR) mmalloc_getkey (md, 1);
md = mmalloc_detach (md);
if (md != NULL)
{
/* FIXME: should figure out why detach failed */
md = NULL;
}
else if (mapto != (CORE_ADDR) NULL)
{
/* This mapping file needs to be remapped at "mapto" */
md = mmalloc_attach (fd, mapto);
}
else
{
/* This is a freshly created mapping file. */
mapto = (CORE_ADDR) mmalloc_findbase (20 * 1024 * 1024);
if (mapto != 0)
{
/* To avoid reusing the freshly created mapping file, at the
1999-07-07 22:19:36 +02:00
address selected by mmap, we must truncate it before trying
to do an attach at the address we want. */
ftruncate (fd, 0);
md = mmalloc_attach (fd, mapto);
if (md != NULL)
{
mmalloc_setkey (md, 1, mapto);
}
}
}
}
return (md);
}
1999-07-07 22:19:36 +02:00
#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
/* Returns a section whose range includes PC and SECTION,
or NULL if none found. Note the distinction between the return type,
struct obj_section (which is defined in gdb), and the input type
struct sec (which is a bfd-defined data type). The obj_section
contains a pointer to the bfd struct sec section. */
struct obj_section *
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find_pc_sect_section (CORE_ADDR pc, struct sec *section)
{
struct obj_section *s;
struct objfile *objfile;
1999-07-07 22:19:36 +02:00
1999-08-09 23:36:23 +02:00
ALL_OBJSECTIONS (objfile, s)
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if ((section == 0 || section == s->the_bfd_section) &&
s->addr <= pc && pc < s->endaddr)
return (s);
1999-07-07 22:19:36 +02:00
return (NULL);
}
/* Returns a section whose range includes PC or NULL if none found.
Backward compatibility, no section. */
struct obj_section *
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find_pc_section (CORE_ADDR pc)
{
return find_pc_sect_section (pc, find_pc_mapped_section (pc));
}
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/* In SVR4, we recognize a trampoline by it's section name.
That is, if the pc is in a section named ".plt" then we are in
a trampoline. */
int
2000-07-30 03:48:28 +02:00
in_plt_section (CORE_ADDR pc, char *name)
{
struct obj_section *s;
int retval = 0;
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s = find_pc_section (pc);
retval = (s != NULL
&& s->the_bfd_section->name != NULL
&& STREQ (s->the_bfd_section->name, ".plt"));
1999-07-07 22:19:36 +02:00
return (retval);
}
1999-08-16 21:57:19 +02:00
/* Return nonzero if NAME is in the import list of OBJFILE. Else
return zero. */
int
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is_in_import_list (char *name, struct objfile *objfile)
1999-08-16 21:57:19 +02:00
{
register int i;
if (!objfile || !name || !*name)
return 0;
for (i = 0; i < objfile->import_list_size; i++)
if (objfile->import_list[i] && STREQ (name, objfile->import_list[i]))
return 1;
return 0;
}
/* Keep a registry of per-objfile data-pointers required by other GDB
modules. */
struct objfile_data
{
unsigned index;
};
struct objfile_data_registration
{
struct objfile_data *data;
struct objfile_data_registration *next;
};
struct objfile_data_registry
{
struct objfile_data_registration *registrations;
unsigned num_registrations;
};
static struct objfile_data_registry objfile_data_registry = { NULL, 0 };
const struct objfile_data *
register_objfile_data (void)
{
struct objfile_data_registration **curr;
/* Append new registration. */
for (curr = &objfile_data_registry.registrations;
*curr != NULL; curr = &(*curr)->next);
1999-08-16 21:57:19 +02:00
*curr = XMALLOC (struct objfile_data_registration);
(*curr)->next = NULL;
(*curr)->data = XMALLOC (struct objfile_data);
(*curr)->data->index = objfile_data_registry.num_registrations++;
return (*curr)->data;
}
static void
objfile_alloc_data (struct objfile *objfile)
{
gdb_assert (objfile->data == NULL);
objfile->num_data = objfile_data_registry.num_registrations;
objfile->data = XCALLOC (objfile->num_data, void *);
}
static void
objfile_free_data (struct objfile *objfile)
{
gdb_assert (objfile->data != NULL);
xfree (objfile->data);
objfile->data = NULL;
}
void
set_objfile_data (struct objfile *objfile, const struct objfile_data *data,
void *value)
{
gdb_assert (data->index < objfile->num_data);
objfile->data[data->index] = value;
}
void *
objfile_data (struct objfile *objfile, const struct objfile_data *data)
{
gdb_assert (data->index < objfile->num_data);
return objfile->data[data->index];
}