/* ELF core file support for BFD.
- Copyright 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+ Copyright 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2005, 2007,
+ 2008, 2010 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
char*
-elf_core_file_failing_command (abfd)
- bfd *abfd;
+elf_core_file_failing_command (bfd *abfd)
{
return elf_tdata (abfd)->core_command;
}
int
-elf_core_file_failing_signal (abfd)
- bfd *abfd;
+elf_core_file_failing_signal (bfd *abfd)
{
return elf_tdata (abfd)->core_signal;
}
+int
+elf_core_file_pid (bfd *abfd)
+{
+ return elf_tdata (abfd)->core_pid;
+}
+
bfd_boolean
-elf_core_file_matches_executable_p (core_bfd, exec_bfd)
- bfd *core_bfd;
- bfd *exec_bfd;
+elf_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
{
char* corename;
execname = execname ? execname + 1 : exec_bfd->filename;
- if (strcmp(execname, corename) != 0)
+ if (strcmp (execname, corename) != 0)
return FALSE;
}
floating point registers (.reg2). */
const bfd_target *
-elf_core_file_p (abfd)
- bfd *abfd;
+elf_core_file_p (bfd *abfd)
{
Elf_External_Ehdr x_ehdr; /* Elf file header, external form. */
Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form. */
Elf_Internal_Phdr *i_phdrp; /* Elf program header, internal form. */
unsigned int phindex;
- struct elf_backend_data *ebd;
+ const struct elf_backend_data *ebd;
struct bfd_preserve preserve;
bfd_size_type amt;
preserve.marker = NULL;
/* Read in the ELF header in external format. */
- if (bfd_bread ((PTR) &x_ehdr, (bfd_size_type) sizeof (x_ehdr), abfd)
- != sizeof (x_ehdr))
+ if (bfd_bread (&x_ehdr, sizeof (x_ehdr), abfd) != sizeof (x_ehdr))
{
if (bfd_get_error () != bfd_error_system_call)
goto wrong;
for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
{
- struct elf_backend_data *back;
+ const struct elf_backend_data *back;
if ((*target_ptr)->flavour != bfd_target_elf_flavour)
continue;
- back = (struct elf_backend_data *) (*target_ptr)->backend_data;
+ back = xvec_get_elf_backend_data (*target_ptr);
+ if (back->s->arch_size != ARCH_SIZE)
+ continue;
if (back->elf_machine_code == i_ehdrp->e_machine
|| (back->elf_machine_alt1 != 0
&& i_ehdrp->e_machine == back->elf_machine_alt1)
if (i_ehdrp->e_phentsize != sizeof (Elf_External_Phdr))
goto wrong;
+ /* If the program header count is PN_XNUM(0xffff), the actual
+ count is in the first section header. */
+ if (i_ehdrp->e_shoff != 0 && i_ehdrp->e_phnum == PN_XNUM)
+ {
+ Elf_External_Shdr x_shdr;
+ Elf_Internal_Shdr i_shdr;
+ bfd_signed_vma where = i_ehdrp->e_shoff;
+
+ if (where != (file_ptr) where)
+ goto wrong;
+
+ /* Seek to the section header table in the file. */
+ if (bfd_seek (abfd, (file_ptr) where, SEEK_SET) != 0)
+ goto fail;
+
+ /* Read the first section header at index 0, and convert to internal
+ form. */
+ if (bfd_bread (&x_shdr, sizeof (x_shdr), abfd) != sizeof (x_shdr))
+ goto fail;
+ elf_swap_shdr_in (abfd, &x_shdr, &i_shdr);
+
+ if (i_shdr.sh_info != 0)
+ {
+ i_ehdrp->e_phnum = i_shdr.sh_info;
+ if (i_ehdrp->e_phnum != i_shdr.sh_info)
+ goto wrong;
+ }
+ }
+
+ /* Sanity check that we can read all of the program headers.
+ It ought to be good enough to just read the last one. */
+ if (i_ehdrp->e_phnum > 1)
+ {
+ Elf_External_Phdr x_phdr;
+ Elf_Internal_Phdr i_phdr;
+ bfd_signed_vma where;
+
+ /* Check that we don't have a totally silly number of
+ program headers. */
+ if (i_ehdrp->e_phnum > (unsigned int) -1 / sizeof (x_phdr)
+ || i_ehdrp->e_phnum > (unsigned int) -1 / sizeof (i_phdr))
+ goto wrong;
+
+ where = i_ehdrp->e_phoff + (i_ehdrp->e_phnum - 1) * sizeof (x_phdr);
+ if (where != (file_ptr) where)
+ goto wrong;
+ if ((bfd_size_type) where <= i_ehdrp->e_phoff)
+ goto wrong;
+
+ if (bfd_seek (abfd, (file_ptr) where, SEEK_SET) != 0)
+ goto fail;
+ if (bfd_bread (&x_phdr, sizeof (x_phdr), abfd) != sizeof (x_phdr))
+ goto fail;
+ }
+
/* Move to the start of the program headers. */
if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_phoff, SEEK_SET) != 0)
goto wrong;
{
Elf_External_Phdr x_phdr;
- if (bfd_bread ((PTR) &x_phdr, (bfd_size_type) sizeof (x_phdr), abfd)
- != sizeof (x_phdr))
+ if (bfd_bread (&x_phdr, sizeof (x_phdr), abfd) != sizeof (x_phdr))
goto fail;
elf_swap_phdr_in (abfd, &x_phdr, i_phdrp + phindex);
/* Set the machine architecture. Do this before processing the
program headers since we need to know the architecture type
when processing the notes of some systems' core files. */
- if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0))
- {
+ if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0)
/* It's OK if this fails for the generic target. */
- if (ebd->elf_machine_code != EM_NONE)
- goto fail;
- }
+ && ebd->elf_machine_code != EM_NONE)
+ goto fail;
+
+ /* Let the backend double check the format and override global
+ information. We do this before processing the program headers
+ to allow the correct machine (as opposed to just the default
+ machine) to be set, making it possible for grok_prstatus and
+ grok_psinfo to rely on the mach setting. */
+ if (ebd->elf_backend_object_p != NULL
+ && ! ebd->elf_backend_object_p (abfd))
+ goto wrong;
/* Process each program header. */
for (phindex = 0; phindex < i_ehdrp->e_phnum; ++phindex)
if (! bfd_section_from_phdr (abfd, i_phdrp + phindex, (int) phindex))
goto fail;
+ /* Check for core truncation. */
+ {
+ bfd_size_type high = 0;
+ struct stat statbuf;
+ for (phindex = 0; phindex < i_ehdrp->e_phnum; ++phindex)
+ {
+ Elf_Internal_Phdr *p = i_phdrp + phindex;
+ if (p->p_filesz)
+ {
+ bfd_size_type current = p->p_offset + p->p_filesz;
+ if (high < current)
+ high = current;
+ }
+ }
+ if (bfd_stat (abfd, &statbuf) == 0)
+ {
+ if ((bfd_size_type) statbuf.st_size < high)
+ {
+ (*_bfd_error_handler)
+ (_("Warning: %B is truncated: expected core file "
+ "size >= %lu, found: %lu."),
+ abfd, (unsigned long) high, (unsigned long) statbuf.st_size);
+ }
+ }
+ }
+
/* Save the entry point from the ELF header. */
bfd_get_start_address (abfd) = i_ehdrp->e_entry;
- /* Let the backend double check the format and override global
- information. */
- if (ebd->elf_backend_object_p
- && (! (*ebd->elf_backend_object_p) (abfd)))
- goto wrong;
-
bfd_preserve_finish (abfd, &preserve);
return abfd->xvec;
projects / deliverable / binutils-gdb.git / blobdiff