/* GDB routines for manipulating objfiles.
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
#include "source.h"
#include "addrmap.h"
#include "arch-utils.h"
+#include "exec.h"
/* Prototypes for local functions */
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
aflag = bfd_get_section_flags (abfd, asect);
- if (!(aflag & SEC_ALLOC) && !(TARGET_KEEP_SECTION (asect)))
+ if (!(aflag & SEC_ALLOC))
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->objfile_obstack, (char *) §ion, sizeof (section));
- objfile->sections_end = (struct obj_section *) (((unsigned long) objfile->sections_end) + 1);
+ objfile->sections_end
+ = (struct obj_section *) (((size_t) objfile->sections_end) + 1);
}
/* Builds a section table for OBJFILE.
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->objfile_obstack);
- objfile->sections_end = objfile->sections + (unsigned long) objfile->sections_end;
+ bfd_map_over_sections (objfile->obfd,
+ add_to_objfile_sections, (void *) objfile);
+ objfile->sections = obstack_finish (&objfile->objfile_obstack);
+ objfile->sections_end = objfile->sections + (size_t) objfile->sections_end;
return (0);
}
{
objfile = (struct objfile *) xmalloc (sizeof (struct objfile));
memset (objfile, 0, sizeof (struct objfile));
- objfile->md = NULL;
objfile->psymbol_cache = bcache_xmalloc ();
objfile->macro_cache = bcache_xmalloc ();
/* We could use obstack_specify_allocation here instead, but
the startup file because it contains the entry point. */
objfile->ei.entry_point = bfd_get_start_address (objfile->obfd);
}
+ else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC
+ && bfd_get_start_address (objfile->obfd) != 0)
+ /* Some shared libraries may have entry points set and be
+ runnable. There's no clear way to indicate this, so just check
+ for values other than zero. */
+ objfile->ei.entry_point = bfd_get_start_address (objfile->obfd);
else
{
/* Examination of non-executable.o files. Short-circuit this stuff. */
(*objfile->sf->sym_finish) (objfile);
}
- /* We always close the bfd. */
+ /* We always close the bfd, unless the OBJF_KEEPBFD flag is set. */
- if (objfile->obfd != NULL)
+ if (objfile->obfd != NULL && !(objfile->flags & OBJF_KEEPBFD))
{
char *name = bfd_get_filename (objfile->obfd);
if (!bfd_close (objfile->obfd))
void
objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets)
{
+ struct obj_section *s;
struct section_offsets *delta =
((struct section_offsets *)
alloca (SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)));
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_CLASS (sym) == LOC_STATIC)
&& SYMBOL_SECTION (sym) >= 0)
{
SYMBOL_VALUE_ADDRESS (sym) +=
objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile));
}
- {
- struct obj_section *s;
- bfd *abfd;
-
- abfd = objfile->obfd;
+ /* Update the table in exec_ops, used to read memory. */
+ ALL_OBJFILE_OSECTIONS (objfile, s)
+ {
+ int idx = s->the_bfd_section->index;
- ALL_OBJFILE_OSECTIONS (objfile, s)
- {
- int idx = s->the_bfd_section->index;
-
- s->addr += ANOFFSET (delta, idx);
- s->endaddr += ANOFFSET (delta, idx);
- }
- }
+ exec_set_section_address (bfd_get_filename (objfile->obfd), idx,
+ obj_section_addr (s));
+ }
/* Relocate breakpoints as necessary, after things are relocated. */
breakpoint_re_set ();
return 0;
}
-/* 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
- bfd_section" (which is a bfd-defined data type). The obj_section
- contains a pointer to the "struct bfd_section". */
+/* Returns a section whose range includes PC or NULL if none found. */
struct obj_section *
-find_pc_sect_section (CORE_ADDR pc, struct bfd_section *section)
+find_pc_section (CORE_ADDR pc)
{
struct obj_section *s;
struct objfile *objfile;
- ALL_OBJSECTIONS (objfile, s)
- if ((section == 0 || section == s->the_bfd_section) &&
- s->addr <= pc && pc < s->endaddr)
- return (s);
-
- return (NULL);
-}
+ /* Check for mapped overlay section first. */
+ s = find_pc_mapped_section (pc);
+ if (s)
+ return s;
-/* Returns a section whose range includes PC or NULL if none found.
- Backward compatibility, no section. */
+ ALL_OBJSECTIONS (objfile, s)
+ if (obj_section_addr (s) <= pc && pc < obj_section_endaddr (s))
+ return s;
-struct obj_section *
-find_pc_section (CORE_ADDR pc)
-{
- return find_pc_sect_section (pc, find_pc_mapped_section (pc));
+ return NULL;
}
struct objfile_data
{
unsigned index;
+ void (*cleanup) (struct objfile *, void *);
};
struct objfile_data_registration
static struct objfile_data_registry objfile_data_registry = { NULL, 0 };
const struct objfile_data *
-register_objfile_data (void)
+register_objfile_data_with_cleanup (void (*cleanup) (struct objfile *, void *))
{
struct objfile_data_registration **curr;
(*curr)->next = NULL;
(*curr)->data = XMALLOC (struct objfile_data);
(*curr)->data->index = objfile_data_registry.num_registrations++;
+ (*curr)->data->cleanup = cleanup;
return (*curr)->data;
}
+const struct objfile_data *
+register_objfile_data (void)
+{
+ return register_objfile_data_with_cleanup (NULL);
+}
+
static void
objfile_alloc_data (struct objfile *objfile)
{
objfile_free_data (struct objfile *objfile)
{
gdb_assert (objfile->data != NULL);
+ clear_objfile_data (objfile);
xfree (objfile->data);
objfile->data = NULL;
}
void
clear_objfile_data (struct objfile *objfile)
{
+ struct objfile_data_registration *registration;
+ int i;
+
gdb_assert (objfile->data != NULL);
+
+ for (registration = objfile_data_registry.registrations, i = 0;
+ i < objfile->num_data;
+ registration = registration->next, i++)
+ if (objfile->data[i] != NULL && registration->data->cleanup)
+ registration->data->cleanup (objfile, objfile->data[i]);
+
memset (objfile->data, 0, objfile->num_data * sizeof (void *));
}