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[PATCH 3/5] backends: Add PPC64 machine_flag_check.
- From: Mark Wielaard <mjw at redhat dot com>
- To: elfutils-devel at lists dot fedorahosted dot org
- Date: Sun, 05 Jan 2014 22:02:18 +0100
- Subject: [PATCH 3/5] backends: Add PPC64 machine_flag_check.
To distinguish between the current PPC64 ELF ABI and the revised
ELFv2 ABI that will not use function descriptors binutils started
to emit the version (currently 1) in the ehdr e_flags. Recognize
all valid versions (0, 1 or 2) in elflint by adding the hook
ppc64_machine_flag_check.
Signed-off-by: Mark Wielaard <mjw@redhat.com>
---
backends/ChangeLog | 5 +++++
backends/ppc64_init.c | 3 ++-
backends/ppc64_symbol.c | 12 +++++++++++-
3 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/backends/ChangeLog b/backends/ChangeLog
index 2074cff..4ea1acd 100644
--- a/backends/ChangeLog
+++ b/backends/ChangeLog
@@ -1,3 +1,8 @@
+2014-01-04 Mark Wielaard <mjw@redhat.com>
+
+ * ppc64_symbol.c (ppc64_machine_flag_check): New function.
+ * ppc64_init.c (ppc64_init): Hook machine_flag_check.
+
2014-01-03 Mark Wielaard <mjw@redhat.com>
* Makefile.am (aarch64_SRCS): Add aarch64_cfi.c.
diff --git a/backends/ppc64_init.c b/backends/ppc64_init.c
index d8f1417..e52231c 100644
--- a/backends/ppc64_init.c
+++ b/backends/ppc64_init.c
@@ -1,5 +1,5 @@
/* Initialization of PPC64 specific backend library.
- Copyright (C) 2004, 2005, 2006, 2007, 2008, 2013 Red Hat, Inc.
+ Copyright (C) 2004, 2005, 2006, 2007, 2008, 2013, 2014 Red Hat, Inc.
This file is part of elfutils.
Written by Ulrich Drepper <drepper@redhat.com>, 2004.
@@ -58,6 +58,7 @@ ppc64_init (elf, machine, eh, ehlen)
HOOK (eh, reloc_simple_type);
HOOK (eh, dynamic_tag_name);
HOOK (eh, dynamic_tag_check);
+ HOOK (eh, machine_flag_check);
HOOK (eh, copy_reloc_p);
HOOK (eh, check_special_symbol);
HOOK (eh, bss_plt_p);
diff --git a/backends/ppc64_symbol.c b/backends/ppc64_symbol.c
index 244e40f..212d414 100644
--- a/backends/ppc64_symbol.c
+++ b/backends/ppc64_symbol.c
@@ -1,5 +1,5 @@
/* PPC64 specific symbolic name handling.
- Copyright (C) 2004, 2005 Red Hat, Inc.
+ Copyright (C) 2004, 2005, 2014 Red Hat, Inc.
This file is part of elfutils.
Written by Ulrich Drepper <drepper@redhat.com>, 2004.
@@ -110,3 +110,13 @@ ppc64_bss_plt_p (Elf *elf __attribute__ ((unused)),
{
return true;
}
+
+/* Check whether machine flags are valid. PPC64 has three possible values:
+ 0 - for unspecified ABI, or not using any specific ABI features.
+ 1 - for the original ELF PPC64 ABI using function descriptors.
+ 2 - for the revised ELFv2 PPC64 ABI without function descriptors. */
+bool
+ppc64_machine_flag_check (GElf_Word flags)
+{
+ return flags == 0 || flags == 1 || flags == 2;
+}
--
1.8.4.2