Split vDSO range lookup to a gdbarch hook
authorPedro Alves <palves@redhat.com>
Fri, 10 Oct 2014 14:57:13 +0000 (15:57 +0100)
committerPedro Alves <palves@redhat.com>
Fri, 10 Oct 2014 14:57:13 +0000 (15:57 +0100)
commit3437254d7b5bc57d3a298df8640ae2f55bdbff2a
treea4514be4368be36b4aa93ee54a9833c2361fe8fe
parent31cc0b807b2fde7d0110175418a6eea01a982489
Split vDSO range lookup to a gdbarch hook

We have a case in solib-svr4.c where we could reuse symfile-mem.c's
vDSO range lookup.  Since symfile-mem.c is not present in all
configurations solib-svr4.c is, move that lookup to a gdbarch hook.

This has the minor (good) side effect that we stop even trying the
target_auxv_search lookup against targets that don't have a concept of
a vDSO, in case symfile-mem.c happens to be linked in the build
(--enable-targets=all).

Tested on x86_64 Fedora 20.

gdb/
2014-10-10  Pedro Alves  <palves@redhat.com>

* arch-utils.c (default_vsyscall_range): New function.
* arch-utils.h (default_vsyscall_range): New declaration.
* gdbarch.sh (vsyscall_range): New hook.
* gdbarch.h, gdbarch.c: Regenerate.
* linux-tdep.c (linux_vsyscall_range): New function.
(linux_init_abi): Install linux_vsyscall_range as
vsyscall_range gdbarch hook.
* memrange.c (address_in_mem_range): New function.
* memrange.h (address_in_mem_range): New declaration.
* symfile-mem.c (find_vdso_size): Delete function.
(add_vsyscall_page): Use gdbarch_vsyscall_range.
gdb/ChangeLog
gdb/arch-utils.c
gdb/arch-utils.h
gdb/gdbarch.c
gdb/gdbarch.h
gdb/gdbarch.sh
gdb/linux-tdep.c
gdb/memrange.c
gdb/memrange.h
gdb/symfile-mem.c