From: Alan Modra <amodra@gmail.com>
Date: Wed, 16 Apr 2014 02:17:13 +0000 (+0930)
Subject: fill ppc476 fixup area
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=424d420f4a30a170a7b518089deb847692cedb16;p=thirdparty%2Fbinutils-gdb.git

fill ppc476 fixup area

Stops false positive warnings from scanner.

	* elf32-ppc.c (ppc_elf_relocate_section): Fill 476 fixup area
	with "ba 0" rather than zeros.
---

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index bf705877e9d..aa1ec43cacb 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,6 +1,10 @@
 2014-04-16  Alan Modra  <amodra@gmail.com>
 
 	Apply mainline patches for ppc476 workaround
+	2014-04-16  Alan Modra  <amodra@gmail.com>
+	* elf32-ppc.c (ppc_elf_relocate_section): Fill 476 fixup area
+	with "ba 0" rather than zeros.
+
 	2014-04-14  Alan Modra  <amodra@gmail.com>
 	* elf32-ppc.c (BA): Define
 	(ppc_elf_link_hash_table_create): Correct default_params.
diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c
index 43e77d8f299..47ef46ad080 100644
--- a/bfd/elf32-ppc.c
+++ b/bfd/elf32-ppc.c
@@ -9173,8 +9173,20 @@ ppc_elf_relocate_section (bfd *output_bfd,
 
       relax_info = elf_section_data (input_section)->sec_info;
       if (relax_info->workaround_size != 0)
-	memset (contents + input_section->size - relax_info->workaround_size,
-		0, relax_info->workaround_size);
+	{
+	  bfd_byte *p;
+	  unsigned int n;
+	  bfd_byte fill[4];
+
+	  bfd_put_32 (input_bfd, BA, fill);
+	  p = contents + input_section->size - relax_info->workaround_size;
+	  n = relax_info->workaround_size >> 2;
+	  while (n--)
+	    {
+	      memcpy (p, fill, 4);
+	      p += 4;
+	    }
+	}
 
       /* The idea is: Replace the last instruction on a page with a
 	 branch to a patch area.  Put the insn there followed by a