/* GDB routines for manipulating objfiles.
- Copyright 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+ 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.
This file is part of GDB.
#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 "obstack.h"
+#include "gdb_obstack.h"
#include "gdb_string.h"
+#include "hashtab.h"
#include "breakpoint.h"
+#include "block.h"
+#include "dictionary.h"
/* Prototypes for local functions */
#if defined(USE_MMALLOC) && defined(HAVE_MMAP)
+#include "mmalloc.h"
+
static int open_existing_mapped_file (char *, long, int);
static int open_mapped_file (char *filename, long mtime, int flags);
-static PTR map_to_file (int);
+static void *map_to_file (int);
#endif /* defined(USE_MMALLOC) && defined(HAVE_MMAP) */
-static void add_to_objfile_sections (bfd *, sec_ptr, PTR);
+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. */
the end of the table (objfile->sections_end). */
static void
-add_to_objfile_sections (bfd *abfd, sec_ptr asect, PTR objfile_p_char)
+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;
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 *
allocate_objfile (bfd *abfd, int flags)
{
flags);
if (fd >= 0)
{
- PTR md;
+ void *md;
if ((md = map_to_file (fd)) == NULL)
{
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);
obstack_chunkfun (&objfile->psymbol_cache.cache, xmmalloc);
- obstack_freefun (&objfile->psymbol_cache.cache, mfree);
+ obstack_freefun (&objfile->psymbol_cache.cache, xmfree);
+ obstack_chunkfun (&objfile->macro_cache.cache, xmmalloc);
+ obstack_freefun (&objfile->macro_cache.cache, xmfree);
obstack_chunkfun (&objfile->psymbol_obstack, xmmalloc);
- obstack_freefun (&objfile->psymbol_obstack, mfree);
+ obstack_freefun (&objfile->psymbol_obstack, xmfree);
obstack_chunkfun (&objfile->symbol_obstack, xmmalloc);
- obstack_freefun (&objfile->symbol_obstack, mfree);
+ obstack_freefun (&objfile->symbol_obstack, xmfree);
obstack_chunkfun (&objfile->type_obstack, xmmalloc);
- obstack_freefun (&objfile->type_obstack, mfree);
+ obstack_freefun (&objfile->type_obstack, xmfree);
/* If already in objfile list, unlink it. */
unlink_objfile (objfile);
/* Forget things specific to a particular gdb, may have changed. */
objfile->flags |= OBJF_MAPPED;
mmalloc_setkey (objfile->md, 0, objfile);
obstack_specify_allocation_with_arg (&objfile->psymbol_cache.cache,
- 0, 0, xmmalloc, mfree,
+ 0, 0, xmmalloc, xmfree,
+ objfile->md);
+ obstack_specify_allocation_with_arg (&objfile->macro_cache.cache,
+ 0, 0, xmmalloc, xmfree,
objfile->md);
obstack_specify_allocation_with_arg (&objfile->psymbol_obstack,
- 0, 0, xmmalloc, mfree,
+ 0, 0, xmmalloc, xmfree,
objfile->md);
obstack_specify_allocation_with_arg (&objfile->symbol_obstack,
- 0, 0, xmmalloc, mfree,
+ 0, 0, xmmalloc, xmfree,
objfile->md);
obstack_specify_allocation_with_arg (&objfile->type_obstack,
- 0, 0, xmmalloc, mfree,
+ 0, 0, xmmalloc, xmfree,
objfile->md);
}
}
objfile = (struct objfile *) xmalloc (sizeof (struct objfile));
memset (objfile, 0, sizeof (struct objfile));
objfile->md = NULL;
- obstack_specify_allocation (&objfile->psymbol_cache.cache, 0, 0,
- xmalloc, free);
+ objfile->psymbol_cache = bcache_xmalloc ();
+ objfile->macro_cache = bcache_xmalloc ();
obstack_specify_allocation (&objfile->psymbol_obstack, 0, 0, xmalloc,
- free);
+ xfree);
obstack_specify_allocation (&objfile->symbol_obstack, 0, 0, xmalloc,
- free);
+ xfree);
obstack_specify_allocation (&objfile->type_obstack, 0, 0, xmalloc,
- free);
+ xfree);
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. */
objfile->obfd = abfd;
if (objfile->name != NULL)
{
- mfree (objfile->md, objfile->name);
+ xmfree (objfile->md, objfile->name);
}
if (abfd != NULL)
{
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;
+ objfile->sect_index_text = -1;
+ objfile->sect_index_data = -1;
+ objfile->sect_index_bss = -1;
+ objfile->sect_index_rodata = -1;
+
+ /* We don't yet have a C++-specific namespace symtab. */
+
+ objfile->cp_namespace_symtab = NULL;
/* Add this file onto the tail of the linked list of other such files. */
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));
+ 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);
+ }
+}
+
+
+/* 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
}
}
- internal_error ("objfiles.c (unlink_objfile): objfile already unlinked");
+ internal_error (__FILE__, __LINE__,
+ "unlink_objfile: objfile already unlinked");
}
void
free_objfile (struct objfile *objfile)
{
+ 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
if (!bfd_close (objfile->obfd))
warning ("cannot close \"%s\": %s",
name, bfd_errmsg (bfd_get_error ()));
- free (name);
+ xfree (name);
}
/* Remove it from the chain of all objfiles. */
clear_pc_function_cache ();
/* The last thing we do is free the objfile struct itself for the
- non-reusable case, or detach from the mapped file for the reusable
- case. Note that the mmalloc_detach or the mfree is the last thing
- we can do with this objfile. */
+ 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)
if (objfile != NULL)
{
+ objfile_free_data (objfile);
if (objfile->name != NULL)
{
- mfree (objfile->md, objfile->name);
+ xmfree (objfile->md, objfile->name);
}
if (objfile->global_psymbols.list)
- mfree (objfile->md, objfile->global_psymbols.list);
+ xmfree (objfile->md, objfile->global_psymbols.list);
if (objfile->static_psymbols.list)
- mfree (objfile->md, objfile->static_psymbols.list);
+ xmfree (objfile->md, objfile->static_psymbols.list);
/* Free the obstacks for non-reusable objfiles */
- free_bcache (&objfile->psymbol_cache);
+ bcache_xfree (objfile->psymbol_cache);
+ bcache_xfree (objfile->macro_cache);
+ if (objfile->demangled_names_hash)
+ htab_delete (objfile->demangled_names_hash);
obstack_free (&objfile->psymbol_obstack, 0);
obstack_free (&objfile->symbol_obstack, 0);
obstack_free (&objfile->type_obstack, 0);
- mfree (objfile->md, objfile);
+ xmfree (objfile->md, objfile);
objfile = NULL;
}
}
objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets)
{
struct section_offsets *delta =
- (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
+ ((struct section_offsets *)
+ alloca (SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)));
{
int i;
for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i)
{
struct block *b;
- int j;
+ struct symbol *sym;
+ struct dict_iterator iter;
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)
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
{
- struct symbol *sym = BLOCK_SYM (b, j);
-
fixup_symbol_section (sym, objfile);
/* The RS6000 code from which this was taken skipped
- any symbols in STRUCT_NAMESPACE or UNDEF_NAMESPACE.
+ any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN.
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
/* 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)
+ && SYMBOL_DOMAIN (sym) == LABEL_DOMAIN
+ && strcmp (DEPRECATED_SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0)
ecoff_relocate_efi (sym, ANOFFSET (delta,
s->block_line_section));
#endif
(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;
}
}
- if (objfile->ei.entry_point != ~(CORE_ADDR) 0)
- objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
-
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)
+ if (objfile->ei.deprecated_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));
+ objfile->ei.deprecated_entry_file_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
+ objfile->ei.deprecated_entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
}
if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC)
ALL_OBJFILES (ofp)
{
- if (ofp->msymbols != NULL)
+ if (ofp->minimal_symbol_count > 0)
{
return 1;
}
/* First try to open an existing file in the current directory, and
then try the directory where the symbol file is located. */
- symsfilename = concat ("./", basename (filename), ".syms", (char *) NULL);
+ symsfilename = concat ("./", lbasename (filename), ".syms", (char *) NULL);
if ((fd = open_existing_mapped_file (symsfilename, mtime, flags)) < 0)
{
- free (symsfilename);
+ xfree (symsfilename);
symsfilename = concat (filename, ".syms", (char *) NULL);
fd = open_existing_mapped_file (symsfilename, mtime, flags);
}
if ((fd < 0) && (flags & OBJF_MAPPED))
{
- free (symsfilename);
- symsfilename = concat ("./", basename (filename), ".syms",
+ xfree (symsfilename);
+ symsfilename = concat ("./", lbasename (filename), ".syms",
(char *) NULL);
if ((fd = open (symsfilename, O_RDWR | O_CREAT | O_TRUNC, 0666)) < 0)
{
}
}
- free (symsfilename);
+ xfree (symsfilename);
return (fd);
}
-static PTR
+static void *
map_to_file (int fd)
{
- PTR md;
+ void *md;
CORE_ADDR mapto;
- md = mmalloc_attach (fd, (PTR) 0);
+ md = mmalloc_attach (fd, 0);
if (md != NULL)
{
mapto = (CORE_ADDR) mmalloc_getkey (md, 1);
else if (mapto != (CORE_ADDR) NULL)
{
/* This mapping file needs to be remapped at "mapto" */
- md = mmalloc_attach (fd, (PTR) mapto);
+ md = mmalloc_attach (fd, mapto);
}
else
{
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);
+ md = mmalloc_attach (fd, mapto);
if (md != NULL)
{
- mmalloc_setkey (md, 1, (PTR) mapto);
+ mmalloc_setkey (md, 1, mapto);
}
}
}
int
is_in_import_list (char *name, struct objfile *objfile)
{
- register int i;
+ int i;
if (!objfile || !name || !*name)
return 0;
return 1;
return 0;
}
+\f
+
+/* 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);
+
+ *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];
+}
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