binutils: Don't generate .PPC.EMB.apuinfo sections for 64-bit output

This can cause issues building ppc64/eabi kernel. For details
see the patch header

(From OE-Core rev: 3c6622e22b0e1b2a8ceea6465ea84c6fb8299518)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khem Raj 2013-03-25 23:21:16 -07:00 committed by Richard Purdie
parent 6da3aca59b
commit a8f92290f1
2 changed files with 47 additions and 0 deletions

View File

@ -47,6 +47,7 @@ BACKPORT = "\
file://backport/0001-ld.texinfo-Replace-with-when-it-is-part-of-the-text.patch \
file://backport/binutils-fix-ineffectual-zero-of-cache.patch \
file://backport/binutils-replace-strncat-with-strcat.patch \
file://backport/0001-config-tc-ppc.c-md_assemble-Do-not-generate-APUinfo-.patch \
"
SRC_URI[md5sum] = "33adb18c3048d057ac58d07a3f1adb38"
SRC_URI[sha256sum] = "2ab2e5b03e086d12c6295f831adad46b3e1410a3a234933a2e8fac66cb2e7a19"

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@ -0,0 +1,46 @@
The powerpc assembler can generate .PPC.EMB.apuinfo sections in some
circumstances. These originate, I think, from the old e500 ABI; in
any case, they are only defined for 32-bit ABIs, and there is a
significant amount of code in bfd/elf32-ppc.c to handle them
appropriately, none of which is in elf64-ppc.c. However, the
assembler can generate them when building 64-bit code for processors
such as e5500 (which uses PPC_OPCODE_E500MC). In such circumstances,
they get generated as PROGBITS rather than NOTE sections, which
reportedly can cause problems in a Linux kernel build.
Since these sections are only defined in 32-bit ABIs, I think it's
most appropriate to avoid generating them for 64-bit output, which
this patch does.
Upstream-Status: Backport
-Khem 2013/03/25
From d77411f56a85225e3f7b674e7172c712f6cd61cb Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Fri, 25 Jan 2013 02:02:20 +0000
Subject: [PATCH] * config/tc-ppc.c (md_assemble): Do not generate
APUinfo sections for 64-bit output.
---
gas/ChangeLog | 5 +++++
gas/config/tc-ppc.c | 3 ++-
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index fd15bea..0929e52 100644
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -3249,7 +3249,8 @@ md_assemble (char *str)
#ifdef OBJ_ELF
/* Do we need/want an APUinfo section? */
- if ((ppc_cpu & (PPC_OPCODE_E500 | PPC_OPCODE_E500MC | PPC_OPCODE_VLE)) != 0)
+ if ((ppc_cpu & (PPC_OPCODE_E500 | PPC_OPCODE_E500MC | PPC_OPCODE_VLE)) != 0
+ && !ppc_obj64)
{
/* These are all version "1". */
if (opcode->flags & PPC_OPCODE_SPE)
--
1.7.9.5