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>

1 files changed, 11 insertions, 1 deletions

diff --git a/backends/ppc64_symbol.c b/backends/ppc64_symbol.c
index 244e40f8..212d4145 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;
+}