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gdb and binutils branch master updated. 5979d6b69b20a8355ea94b75fad97415fce4788c
- From: amodra at sourceware dot org
- To: binutils-cvs at sourceware dot org, gdb-cvs at sourceware dot org
- Date: 2 Apr 2014 01:38:41 -0000
- Subject: gdb and binutils branch master updated. 5979d6b69b20a8355ea94b75fad97415fce4788c
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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5979d6b69b20a8355ea94b75fad97415fce4788c
commit 5979d6b69b20a8355ea94b75fad97415fce4788c
Author: Alan Modra <amodra@gmail.com>
Date: Wed Apr 2 12:07:33 2014 +1030
Handle VDSO section headers past end of page
When a VDSO gets large enough that it doesn't entirely fit in one page,
but not so large that the part described by the program header exceeds
one page, then gdb/BFD doesn't read the section headers and symbol
table information. This patch cures that by passing the size of the
vdso to BFD, and fixes a number of other issues in the BFD code.
bfd/
* elfcode.h (bfd_from_remote_memory): Add "size" parameter.
Consolidate code handling possible section headers past end of
segment. Don't use p_align for page size guess, instead use
minpagesize. Take note of ld.so clearing section headers when
p_memsz > p_filesz. Handle file header specifying no section
headers. Handle zero p_align throughout. Default loadbase to
zero. Add comments. Rename contents_size to high_offset, and
make it a bfd_vma. Delete unnecessary bfd_set_error calls.
* bfd-in.h (bfd_elf_bfd_from_remote_memory): Update prototpe.
* elf-bfd.h (struct elf_backend_data <elf_backend_from_remote_memory>):
Likewise.
(_bfd_elf32_bfd_from_remote_memory): Likewise.
(_bfd_elf64_bfd_from_remote_memory): Likewise.
* elf.c (bfd_elf_bfd_from_remote_memory): Adjust.
* bfd-in2.h: Regnerate.
gdb/
* symfile-mem.c (symbol_file_add_from_memory): Add size parameter.
Pass to bfd_elf_bfd_from_remote_memory. Adjust all callers.
(struct symbol_file_add_from_memory_args): Add size field.
(find_vdso_size): New function.
(add_vsyscall_page): Attempt to find vdso size.
-----------------------------------------------------------------------
Summary of changes:
bfd/ChangeLog | 18 ++++++
bfd/bfd-in.h | 26 +++++----
bfd/bfd-in2.h | 26 +++++----
bfd/elf-bfd.h | 10 ++--
bfd/elf.c | 3 +-
bfd/elfcode.h | 153 ++++++++++++++++++++++++++++++++---------------------
gdb/ChangeLog | 8 +++
gdb/symfile-mem.c | 38 +++++++++++---
8 files changed, 184 insertions(+), 98 deletions(-)
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