/* GDB routines for manipulating objfiles.
- Copyright 1992 Free Software Foundation, Inc.
+ Copyright 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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 "symtab.h"
#include "symfile.h"
#include "objfiles.h"
+#include "gdb-stabs.h"
+#include "target.h"
#include <sys/types.h>
-#include <sys/stat.h>
+#include "gdb_stat.h"
#include <fcntl.h>
-#include <obstack.h>
+#include "obstack.h"
+#include "gdb_string.h"
+
+#include "breakpoint.h"
/* Prototypes for local functions */
-#if !defined(NO_MMALLOC) && defined(HAVE_MMAP)
+#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
static int
open_existing_mapped_file PARAMS ((char *, long, int));
static int
open_mapped_file PARAMS ((char *filename, long mtime, int mapped));
-static CORE_ADDR
-map_to_address PARAMS ((void));
-
-#endif /* !defined(NO_MMALLOC) && defined(HAVE_MMAP) */
+static PTR
+ map_to_file PARAMS ((int));
-/* Message to be printed before the error message, when an error occurs. */
+#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
-extern char *error_pre_print;
+static void
+add_to_objfile_sections PARAMS ((bfd *, sec_ptr, PTR));
/* Externally visible variables that are owned by this module.
See declarations in objfile.h for more info. */
-struct objfile *object_files; /* Linked list of all objfiles */
+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 */
+
+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
+
+/* 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). */
-int mapped_symbol_files; /* Try to use mapped symbol files */
+static void
+add_to_objfile_sections (abfd, asect, objfile_p_char)
+ bfd *abfd;
+ sec_ptr asect;
+ PTR objfile_p_char;
+{
+ struct objfile *objfile = (struct objfile *) objfile_p_char;
+ struct obj_section section;
+ flagword aflag;
+
+ aflag = bfd_get_section_flags (abfd, asect);
+
+ 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);
+ obstack_grow (&objfile->psymbol_obstack, (char *) §ion, 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
+ 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
+build_objfile_section_table (objfile)
+ 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;
+ 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;
+ return (0);
+}
/* Given a pointer to an initialized bfd (ABFD) and a flag that indicates
whether or not an objfile is to be mapped (MAPPED), 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. */
+ objfiles, and return a pointer to the new objfile struct.
+
+ USER_LOADED is simply recorded in the objfile. This record offers a way for
+ run_command to remove old objfile entries which are no longer valid (i.e.,
+ are associated with an old inferior), but to preserve ones that the user
+ explicitly loaded via the add-symbol-file command.
+
+ IS_SOLIB is also simply recorded in the objfile. */
struct objfile *
-allocate_objfile (abfd, mapped)
+allocate_objfile (abfd, mapped, user_loaded, is_solib)
bfd *abfd;
int mapped;
+ int user_loaded;
+ int is_solib;
{
struct objfile *objfile = NULL;
- int fd;
- void *md;
- CORE_ADDR mapto;
+ struct objfile *last_one = NULL;
mapped |= mapped_symbol_files;
-#if !defined(NO_MMALLOC) && defined(HAVE_MMAP)
-
- /* 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. */
-
- fd = open_mapped_file (bfd_get_filename (abfd), bfd_get_mtime (abfd),
- mapped);
- if (fd >= 0)
+#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
+ if (abfd != NULL)
{
- if (((mapto = map_to_address ()) == 0) ||
- ((md = mmalloc_attach (fd, (void *) mapto)) == NULL))
- {
- close (fd);
- }
- else if ((objfile = (struct objfile *) mmalloc_getkey (md, 0)) != NULL)
+
+ /* 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),
+ mapped);
+ if (fd >= 0)
{
- /* Update memory corruption handler function addresses. */
- init_malloc (md);
- objfile -> md = md;
- objfile -> mmfd = fd;
- /* Update pointers to functions to *our* copies */
- obstack_chunkfun (&objfile -> psymbol_obstack, xmmalloc);
- obstack_freefun (&objfile -> psymbol_obstack, mfree);
- obstack_chunkfun (&objfile -> symbol_obstack, xmmalloc);
- obstack_freefun (&objfile -> symbol_obstack, mfree);
- obstack_chunkfun (&objfile -> type_obstack, xmmalloc);
- obstack_freefun (&objfile -> type_obstack, mfree);
- /* If already in objfile list, unlink it. */
- unlink_objfile (objfile);
- /* Forget things specific to a particular gdb, may have changed. */
- objfile -> sf = NULL;
+ PTR md;
+
+ 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 */
+ obstack_chunkfun (&objfile->psymbol_cache.cache, xmmalloc);
+ obstack_freefun (&objfile->psymbol_cache.cache, mfree);
+ obstack_chunkfun (&objfile->psymbol_obstack, xmmalloc);
+ obstack_freefun (&objfile->psymbol_obstack, mfree);
+ obstack_chunkfun (&objfile->symbol_obstack, xmmalloc);
+ obstack_freefun (&objfile->symbol_obstack, mfree);
+ obstack_chunkfun (&objfile->type_obstack, xmmalloc);
+ obstack_freefun (&objfile->type_obstack, mfree);
+ /* If already in objfile list, unlink it. */
+ unlink_objfile (objfile);
+ /* Forget things specific to a particular gdb, may have changed. */
+ objfile->sf = NULL;
+ }
+ else
+ {
+
+ /* 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,
+ 0, 0, xmmalloc, mfree,
+ objfile->md);
+ obstack_specify_allocation_with_arg (&objfile->psymbol_obstack,
+ 0, 0, xmmalloc, mfree,
+ objfile->md);
+ obstack_specify_allocation_with_arg (&objfile->symbol_obstack,
+ 0, 0, xmmalloc, mfree,
+ objfile->md);
+ obstack_specify_allocation_with_arg (&objfile->type_obstack,
+ 0, 0, xmmalloc, mfree,
+ objfile->md);
+ }
}
- else
+
+ if (mapped && (objfile == NULL))
{
- /* 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_full_begin (&objfile -> psymbol_obstack, 0, 0,
- xmmalloc, mfree, objfile -> md,
- OBSTACK_MMALLOC_LIKE);
- obstack_full_begin (&objfile -> symbol_obstack, 0, 0,
- xmmalloc, mfree, objfile -> md,
- OBSTACK_MMALLOC_LIKE);
- obstack_full_begin (&objfile -> type_obstack, 0, 0,
- xmmalloc, mfree, objfile -> md,
- OBSTACK_MMALLOC_LIKE);
+ warning ("symbol table for '%s' will not be mapped",
+ bfd_get_filename (abfd));
}
}
-
- if (mapped && (objfile == NULL))
- {
- warning ("symbol table for '%s' will not be mapped",
- bfd_get_filename (abfd));
- }
-
-#else /* defined(NO_MMALLOC) || !defined(HAVE_MMAP) */
+#else /* !defined(USE_MMALLOC) || !defined(HAVE_MMAP) */
if (mapped)
{
- warning ("this version of gdb does not support mapped symbol tables.");
+ 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
- any more, which shuts up gdb unless the user specifically gives the
- "mapped" keyword again. */
+ any more, which shuts up gdb unless the user specifically gives the
+ "mapped" keyword again. */
mapped_symbol_files = 0;
}
-#endif /* !defined(NO_MMALLOC) && defined(HAVE_MMAP) */
+#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
{
objfile = (struct objfile *) xmalloc (sizeof (struct objfile));
memset (objfile, 0, sizeof (struct objfile));
- objfile -> md = NULL;
- obstack_full_begin (&objfile -> psymbol_obstack, 0, 0, xmalloc, free,
- (void *) 0, 0);
- obstack_full_begin (&objfile -> symbol_obstack, 0, 0, xmalloc, free,
- (void *) 0, 0);
- obstack_full_begin (&objfile -> type_obstack, 0, 0, xmalloc, free,
- (void *) 0, 0);
-
+ objfile->md = NULL;
+ obstack_specify_allocation (&objfile->psymbol_cache.cache, 0, 0,
+ xmalloc, free);
+ obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, xmalloc,
+ free);
+ obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, xmalloc,
+ free);
+ obstack_specify_allocation (&objfile->type_obstack, 0, 0, xmalloc,
+ free);
}
/* 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. */
- objfile -> obfd = abfd;
- if (objfile -> name != NULL)
+ objfile->obfd = abfd;
+ if (objfile->name != NULL)
{
- mfree (objfile -> md, objfile -> name);
+ mfree (objfile->md, objfile->name);
}
- objfile -> name = mstrsave (objfile -> md, bfd_get_filename (abfd));
- objfile -> mtime = bfd_get_mtime (abfd);
+ if (abfd != NULL)
+ {
+ objfile->name = mstrsave (objfile->md, bfd_get_filename (abfd));
+ objfile->mtime = bfd_get_mtime (abfd);
- /* Push this file onto the head of the linked list of other such files. */
+ /* Build section table. */
- objfile -> next = object_files;
- object_files = objfile;
+ if (build_objfile_section_table (objfile))
+ {
+ error ("Can't find the file sections in `%s': %s",
+ objfile->name, bfd_errmsg (bfd_get_error ()));
+ }
+ }
+
+ /* Add this file onto the tail of the linked list of other such files. */
+
+ objfile->next = NULL;
+ if (object_files == NULL)
+ object_files = objfile;
+ else
+ {
+ for (last_one = object_files;
+ last_one->next;
+ last_one = last_one->next);
+ last_one->next = objfile;
+ }
+
+ /* Record whether this objfile was created because the user explicitly
+ caused it (e.g., used the add-symbol-file command).
+ */
+ objfile->user_loaded = user_loaded;
+
+ /* Record whether this objfile definitely represents a solib. */
+ objfile->is_solib = is_solib;
return (objfile);
}
+/* Put OBJFILE at the front of the list. */
+
+void
+objfile_to_front (objfile)
+ 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.
unlink_objfile (objfile)
struct objfile *objfile;
{
- struct objfile** objpp;
+ struct objfile **objpp;
- for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp) -> next))
+ for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp)->next))
{
- if (*objpp == objfile)
+ if (*objpp == objfile)
{
- *objpp = (*objpp) -> next;
- objfile -> next = NULL;
+ *objpp = (*objpp)->next;
+ objfile->next = NULL;
break;
}
}
Things which we do NOT free because they are not in malloc'd memory
or not in memory specific to the objfile include:
- objfile -> sf
+ 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
free_objfile (objfile)
struct objfile *objfile;
{
- int mmfd;
-
/* 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
freeing things which are valid only during this particular gdb
execution, or leaving them to be reused during the next one. */
- if (objfile -> sf != NULL)
+ if (objfile->sf != NULL)
{
- (*objfile -> sf -> sym_finish) (objfile);
+ (*objfile->sf->sym_finish) (objfile);
}
/* We always close the bfd. */
- if (objfile -> obfd != NULL)
+ if (objfile->obfd != NULL)
{
char *name = bfd_get_filename (objfile->obfd);
- bfd_close (objfile -> obfd);
+ if (!bfd_close (objfile->obfd))
+ warning ("cannot close \"%s\": %s",
+ name, bfd_errmsg (bfd_get_error ()));
free (name);
}
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. */
-
- clear_symtab_users_once ();
+
#if defined (CLEAR_SOLIB)
CLEAR_SOLIB ();
+ /* CLEAR_SOLIB closes the bfd's for any shared libraries. But
+ the to_sections for a core file might refer to those bfd's. So
+ detach any core file. */
+ {
+ struct target_ops *t = find_core_target ();
+ if (t != NULL)
+ (t->to_detach) (NULL, 0);
+ }
#endif
+ /* 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
case. Note that the mmalloc_detach or the mfree is the last thing
we can do with this objfile. */
-#if !defined(NO_MMALLOC) && defined(HAVE_MMAP)
+#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
- if (objfile -> flags & OBJF_MAPPED)
+ if (objfile->flags & OBJF_MAPPED)
{
/* Remember the fd so we can close it. We can't close it before
- doing the detach, and after the detach the objfile is gone. */
- mmfd = objfile -> mmfd;
- mmalloc_detach (objfile -> md);
+ doing the detach, and after the detach the objfile is gone. */
+ int mmfd;
+
+ mmfd = objfile->mmfd;
+ mmalloc_detach (objfile->md);
objfile = NULL;
close (mmfd);
}
-#endif /* !defined(NO_MMALLOC) && defined(HAVE_MMAP) */
+#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)
{
- if (objfile -> name != NULL)
+ if (objfile->name != NULL)
{
- mfree (objfile -> md, objfile -> name);
+ mfree (objfile->md, objfile->name);
}
if (objfile->global_psymbols.list)
mfree (objfile->md, objfile->global_psymbols.list);
if (objfile->static_psymbols.list)
mfree (objfile->md, objfile->static_psymbols.list);
/* Free the obstacks for non-reusable objfiles */
- obstack_free (&objfile -> psymbol_obstack, 0);
- obstack_free (&objfile -> symbol_obstack, 0);
- obstack_free (&objfile -> type_obstack, 0);
- mfree (objfile -> md, objfile);
+ obstack_free (&objfile->psymbol_cache.cache, 0);
+ obstack_free (&objfile->psymbol_obstack, 0);
+ obstack_free (&objfile->symbol_obstack, 0);
+ obstack_free (&objfile->type_obstack, 0);
+ mfree (objfile->md, objfile);
objfile = NULL;
}
}
-/* Free all the object files at once. */
+/* Free all the object files at once and clean up their users. */
void
free_all_objfiles ()
struct objfile *objfile, *temp;
ALL_OBJFILES_SAFE (objfile, temp)
+ {
+ free_objfile (objfile);
+ }
+ clear_symtab_users ();
+}
+\f
+/* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS
+ entries in new_offsets. */
+void
+objfile_relocate (objfile, new_offsets)
+ struct objfile *objfile;
+ struct section_offsets *new_offsets;
+{
+ struct section_offsets *delta =
+ (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
+
+ {
+ int i;
+ int something_changed = 0;
+ for (i = 0; i < objfile->num_sections; ++i)
+ {
+ ANOFFSET (delta, 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)
+ {
+ 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);
+ }
+
+ /* Don't relocate a shared blockvector more than once. */
+ if (!s->primary)
+ continue;
+
+ bv = BLOCKVECTOR (s);
+ for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i)
+ {
+ struct block *b;
+ int j;
+
+ b = BLOCKVECTOR_BLOCK (bv, i);
+ BLOCK_START (b) += ANOFFSET (delta, s->block_line_section);
+ BLOCK_END (b) += ANOFFSET (delta, s->block_line_section);
+
+ for (j = 0; j < BLOCK_NSYMS (b); ++j)
+ {
+ struct symbol *sym = BLOCK_SYM (b, j);
+ /* The RS6000 code from which this was taken skipped
+ any symbols in STRUCT_NAMESPACE or UNDEF_NAMESPACE.
+ 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
+ /* Relocate Extra Function Info for ecoff. */
+
+ else if (SYMBOL_CLASS (sym) == LOC_CONST
+ && SYMBOL_NAMESPACE (sym) == LABEL_NAMESPACE
+ && STRCMP (SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0)
+ ecoff_relocate_efi (sym, ANOFFSET (delta,
+ s->block_line_section));
+#endif
+ }
+ }
+ }
+ }
+
+ {
+ struct partial_symtab *p;
+
+ ALL_OBJFILE_PSYMTABS (objfile, p)
{
- free_objfile (objfile);
+ p->textlow += ANOFFSET (delta, SECT_OFF_TEXT);
+ p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT);
+ }
+ }
+
+ {
+ struct partial_symbol **psym;
+
+ for (psym = objfile->global_psymbols.list;
+ psym < objfile->global_psymbols.next;
+ psym++)
+ 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++)
+ 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)
+ 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)
+ ANOFFSET (objfile->section_offsets, i) = ANOFFSET (new_offsets, i);
+ }
+
+ {
+ struct obj_section *s;
+ bfd *abfd;
+
+ abfd = objfile->obfd;
+
+ ALL_OBJFILE_OSECTIONS (objfile, s)
+ {
+ flagword flags;
+
+ flags = bfd_get_section_flags (abfd, s->the_bfd_section);
+
+ if (flags & SEC_CODE)
+ {
+ s->addr += ANOFFSET (delta, SECT_OFF_TEXT);
+ s->endaddr += ANOFFSET (delta, SECT_OFF_TEXT);
+ }
+ else if (flags & (SEC_DATA | SEC_LOAD))
+ {
+ s->addr += ANOFFSET (delta, SECT_OFF_DATA);
+ s->endaddr += ANOFFSET (delta, SECT_OFF_DATA);
+ }
+ else if (flags & SEC_ALLOC)
+ {
+ s->addr += ANOFFSET (delta, SECT_OFF_BSS);
+ s->endaddr += ANOFFSET (delta, SECT_OFF_BSS);
+ }
+ }
+ }
+
+ if (objfile->ei.entry_point != ~(CORE_ADDR) 0)
+ objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT);
+
+ if (objfile->ei.entry_func_lowpc != INVALID_ENTRY_LOWPC)
+ {
+ objfile->ei.entry_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT);
+ objfile->ei.entry_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT);
+ }
+
+ if (objfile->ei.entry_file_lowpc != INVALID_ENTRY_LOWPC)
+ {
+ objfile->ei.entry_file_lowpc += ANOFFSET (delta, SECT_OFF_TEXT);
+ objfile->ei.entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT);
+ }
+
+ if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC)
+ {
+ objfile->ei.main_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT);
+ objfile->ei.main_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT);
}
-}
+ /* Relocate breakpoints as necessary, after things are relocated. */
+ breakpoint_re_set ();
+}
+\f
/* 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. */
struct objfile *ofp;
ALL_OBJFILES (ofp)
- {
- if (ofp -> psymtabs != NULL)
- {
- return 1;
- }
- }
+ {
+ if (ofp->psymtabs != NULL)
+ {
+ return 1;
+ }
+ }
return 0;
}
struct objfile *ofp;
ALL_OBJFILES (ofp)
- {
- if (ofp -> symtabs != NULL)
- {
- return 1;
- }
- }
+ {
+ 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.
+ */
+void
+objfile_purge_solibs ()
+{
+ 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.
+ */
+ if (!objf->user_loaded && objf->is_solib)
+ 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. */
struct objfile *ofp;
ALL_OBJFILES (ofp)
- {
- if (ofp -> msymbols != NULL)
- {
- return 1;
- }
- }
+ {
+ if (ofp->msymbols != NULL)
+ {
+ return 1;
+ }
+ }
return 0;
}
-#if !defined(NO_MMALLOC) && defined(HAVE_MMAP)
+#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
{
if (!mapped)
{
- warning ("mapped symbol file `%s' is out of date", symsfilename);
+ 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 (error_pre_print);
+ printf_unfiltered (error_pre_print);
}
print_sys_errmsg (symsfilename, errno);
}
{
if (error_pre_print)
{
- printf (error_pre_print);
+ printf_unfiltered (error_pre_print);
}
print_sys_errmsg (symsfilename, errno);
}
return (fd);
}
-/* Return the base address at which we would like the next objfile's
- mapped data to start.
-
- For now, we use the kludge that the configuration specifies a base
- address to which it is safe to map the first mmalloc heap, and an
- increment to add to this address for each successive heap. There are
- a lot of issues to deal with here to make this work reasonably, including:
+static PTR
+map_to_file (fd)
+ int fd;
+{
+ PTR md;
+ CORE_ADDR mapto;
- Avoid memory collisions with existing mapped address spaces
+ md = mmalloc_attach (fd, (PTR) 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, (PTR) 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
+ 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, (PTR) mapto);
+ if (md != NULL)
+ {
+ mmalloc_setkey (md, 1, (PTR) mapto);
+ }
+ }
+ }
+ }
+ return (md);
+}
- Reclaim address spaces when their mmalloc heaps are unmapped
+#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
- When mmalloc heaps are shared between processes they have to be
- mapped at the same addresses in each
+/* 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. */
- Once created, a mmalloc heap that is to be mapped back in must be
- mapped at the original address. I.E. each objfile will expect to
- be remapped at it's original address. This becomes a problem if
- the desired address is already in use.
+struct obj_section *
+find_pc_sect_section (pc, section)
+ CORE_ADDR pc;
+ struct sec *section;
+{
+ struct obj_section *s;
+ struct objfile *objfile;
- etc, etc, etc.
+ ALL_OBJSECTIONS (objfile, s)
+ if ((section == 0 || section == s->the_bfd_section) &&
+ s->addr <= pc && pc < s->endaddr)
+ return (s);
- */
+ return (NULL);
+}
+/* Returns a section whose range includes PC or NULL if none found.
+ Backward compatibility, no section. */
-static CORE_ADDR
-map_to_address ()
+struct obj_section *
+find_pc_section (pc)
+ CORE_ADDR pc;
{
+ return find_pc_sect_section (pc, find_pc_mapped_section (pc));
+}
-#if defined(MMAP_BASE_ADDRESS) && defined (MMAP_INCREMENT)
- static CORE_ADDR next = MMAP_BASE_ADDRESS;
- CORE_ADDR mapto = next;
+/* 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. */
- next += MMAP_INCREMENT;
- return (mapto);
+int
+in_plt_section (pc, name)
+ CORE_ADDR pc;
+ char *name;
+{
+ struct obj_section *s;
+ int retval = 0;
-#else
+ s = find_pc_section (pc);
- return (0);
+ retval = (s != NULL
+ && s->the_bfd_section->name != NULL
+ && STREQ (s->the_bfd_section->name, ".plt"));
+ return (retval);
+}
-#endif
+/* Return nonzero if NAME is in the import list of OBJFILE. Else
+ return zero. */
-}
+int
+is_in_import_list (name, objfile)
+ char *name;
+ struct objfile *objfile;
+{
+ register int i;
+
+ if (!objfile || !name || !*name)
+ return 0;
-#endif /* !defined(NO_MMALLOC) && defined(HAVE_MMAP) */
+ for (i = 0; i < objfile->import_list_size; i++)
+ if (objfile->import_list[i] && STREQ (name, objfile->import_list[i]))
+ return 1;
+ return 0;
+}
projects / deliverable / binutils-gdb.git / blobdiff