/* Reading symbol files from memory.
- Copyright (C) 1986-1987, 1989, 1991, 1994-1996, 1998, 2000-2005,
- 2007-2012 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "symtab.h"
#include "gdbcore.h"
#include "objfiles.h"
-#include "exceptions.h"
#include "gdbcmd.h"
#include "target.h"
#include "value.h"
#include "observer.h"
#include "auxv.h"
#include "elf/common.h"
+#include "gdb_bfd.h"
/* Verify parameters of target_read_memory_bfd and target_read_memory are
compatible. */
gdb_static_assert (sizeof (CORE_ADDR) == sizeof (bfd_vma));
gdb_static_assert (sizeof (gdb_byte) == sizeof (bfd_byte));
-gdb_static_assert (sizeof (size_t) <= sizeof (bfd_size_type));
+gdb_static_assert (sizeof (ssize_t) <= sizeof (bfd_size_type));
/* Provide bfd/ compatible prototype for target_read_memory. Casting would not
be enough as LEN width may differ. */
target_read_memory_bfd (bfd_vma memaddr, bfd_byte *myaddr, bfd_size_type len)
{
/* MYADDR must be already allocated for the LEN size so it has to fit in
- size_t. */
- gdb_assert ((size_t) len == len);
+ ssize_t. */
+ gdb_assert ((ssize_t) len == len);
return target_read_memory (memaddr, myaddr, len);
}
/* Read inferior memory at ADDR to find the header of a loaded object file
- and read its in-core symbols out of inferior memory. TEMPL is a bfd
+ and read its in-core symbols out of inferior memory. SIZE, if
+ non-zero, is the known size of the object. TEMPL is a bfd
representing the target's format. NAME is the name to use for this
symbol file in messages; it can be NULL or a malloc-allocated string
which will be attached to the BFD. */
static struct objfile *
-symbol_file_add_from_memory (struct bfd *templ, CORE_ADDR addr, char *name,
- int from_tty)
+symbol_file_add_from_memory (struct bfd *templ, CORE_ADDR addr,
+ size_t size, char *name, int from_tty)
{
struct objfile *objf;
struct bfd *nbfd;
struct section_addr_info *sai;
unsigned int i;
struct cleanup *cleanup;
+ symfile_add_flags add_flags = 0;
if (bfd_get_flavour (templ) != bfd_target_elf_flavour)
error (_("add-symbol-file-from-memory not supported for this target"));
- nbfd = bfd_elf_bfd_from_remote_memory (templ, addr, &loadbase,
+ nbfd = bfd_elf_bfd_from_remote_memory (templ, addr, size, &loadbase,
target_read_memory_bfd);
if (nbfd == NULL)
error (_("Failed to read a valid object file image from memory."));
+ /* Manage the new reference for the duration of this function. */
+ gdb_bfd_ref_ptr nbfd_holder = new_bfd_ref (nbfd);
+
+ xfree (bfd_get_filename (nbfd));
if (name == NULL)
nbfd->filename = xstrdup ("shared object read from target memory");
else
nbfd->filename = name;
if (!bfd_check_format (nbfd, bfd_object))
- {
- /* FIXME: should be checking for errors from bfd_close (for one thing,
- on error it does not free all the storage associated with the
- bfd). */
- bfd_close (nbfd);
- error (_("Got object file from memory but can't read symbols: %s."),
- bfd_errmsg (bfd_get_error ()));
- }
+ error (_("Got object file from memory but can't read symbols: %s."),
+ bfd_errmsg (bfd_get_error ()));
sai = alloc_section_addr_info (bfd_count_sections (nbfd));
cleanup = make_cleanup (xfree, sai);
sai->other[i].sectindex = sec->index;
++i;
}
+ sai->num_sections = i;
- objf = symbol_file_add_from_bfd (nbfd, from_tty ? SYMFILE_VERBOSE : 0,
- sai, OBJF_SHARED, NULL);
+ if (from_tty)
+ add_flags |= SYMFILE_VERBOSE;
+
+ objf = symbol_file_add_from_bfd (nbfd, bfd_get_filename (nbfd),
+ add_flags, sai, OBJF_SHARED, NULL);
+
+ add_target_sections_of_objfile (objf);
/* This might change our ideas about frames already looked at. */
reinit_frame_cache ();
static void
-add_symbol_file_from_memory_command (char *args, int from_tty)
+add_symbol_file_from_memory_command (const char *args, int from_tty)
{
CORE_ADDR addr;
struct bfd *templ;
error (_("Must use symbol-file or exec-file "
"before add-symbol-file-from-memory."));
- symbol_file_add_from_memory (templ, addr, NULL, from_tty);
-}
-
-/* Arguments for symbol_file_add_from_memory_wrapper. */
-
-struct symbol_file_add_from_memory_args
-{
- struct bfd *bfd;
- CORE_ADDR sysinfo_ehdr;
- char *name;
- int from_tty;
-};
-
-/* Wrapper function for symbol_file_add_from_memory, for
- catch_exceptions. */
-
-static int
-symbol_file_add_from_memory_wrapper (struct ui_out *uiout, void *data)
-{
- struct symbol_file_add_from_memory_args *args = data;
-
- symbol_file_add_from_memory (args->bfd, args->sysinfo_ehdr, args->name,
- args->from_tty);
- return 0;
+ symbol_file_add_from_memory (templ, addr, 0, NULL, from_tty);
}
/* Try to add the symbols for the vsyscall page, if there is one.
static void
add_vsyscall_page (struct target_ops *target, int from_tty)
{
- CORE_ADDR sysinfo_ehdr;
+ struct mem_range vsyscall_range;
- if (target_auxv_search (target, AT_SYSINFO_EHDR, &sysinfo_ehdr) > 0
- && sysinfo_ehdr != (CORE_ADDR) 0)
+ if (gdbarch_vsyscall_range (target_gdbarch (), &vsyscall_range))
{
struct bfd *bfd;
- struct symbol_file_add_from_memory_args args;
if (core_bfd != NULL)
bfd = core_bfd;
format should fix this. */
{
warning (_("Could not load vsyscall page "
- "because no executable was specified\n"
- "try using the \"file\" command first."));
+ "because no executable was specified"));
return;
}
- args.bfd = bfd;
- args.sysinfo_ehdr = sysinfo_ehdr;
- args.name = xstrprintf ("system-supplied DSO at %s",
- paddress (target_gdbarch, sysinfo_ehdr));
- /* Pass zero for FROM_TTY, because the action of loading the
- vsyscall DSO was not triggered by the user, even if the user
- typed "run" at the TTY. */
- args.from_tty = 0;
- catch_exceptions (current_uiout, symbol_file_add_from_memory_wrapper,
- &args, RETURN_MASK_ALL);
+
+ char *name = xstrprintf ("system-supplied DSO at %s",
+ paddress (target_gdbarch (), vsyscall_range.start));
+ TRY
+ {
+ /* Pass zero for FROM_TTY, because the action of loading the
+ vsyscall DSO was not triggered by the user, even if the
+ user typed "run" at the TTY. */
+ symbol_file_add_from_memory (bfd,
+ vsyscall_range.start,
+ vsyscall_range.length,
+ name,
+ 0 /* from_tty */);
+ }
+ CATCH (ex, RETURN_MASK_ALL)
+ {
+ exception_print (gdb_stderr, ex);
+ }
+ END_CATCH
}
}
-\f
-
-/* Provide a prototype to silence -Wmissing-prototypes. */
-extern initialize_file_ftype _initialize_symfile_mem;
-
void
_initialize_symfile_mem (void)
{
projects / deliverable / binutils-gdb.git / blobdiff