From 14c3c4bb85e9a2fb8178a09981a0310c997e9ffc Mon Sep 17 00:00:00 2001
From: Renato Golin <renato.golin@linaro.org>
Date: Thu, 6 Aug 2015 18:15:17 +0000
Subject: [PATCH] [ARM/Unwind] Fix wrong usage of write-back on register save

The register save routine in libunwind was using write-back addressing
mode to r0 for thumb, when that was not only different from the ARM
version and more importantly the register restore, but also saving the
wrong address.

Patch by Manuel Freiberger.

Fixes PR24331.

llvm-svn: 244237
---
 libunwind/src/UnwindRegistersSave.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libunwind/src/UnwindRegistersSave.S b/libunwind/src/UnwindRegistersSave.S
index d26908c..fed295a 100644
--- a/libunwind/src/UnwindRegistersSave.S
+++ b/libunwind/src/UnwindRegistersSave.S
@@ -301,7 +301,7 @@ DEFINE_LIBUNWIND_FUNCTION(unw_getcontext)
   .p2align 2
 DEFINE_LIBUNWIND_FUNCTION(unw_getcontext)
 #if !defined(__ARM_ARCH_ISA_ARM)
-  stm r0!, {r0-r7}
+  stm r0, {r0-r7}
   mov r2, sp
   mov r3, lr
   str r2, [r0, #52]
-- 
2.7.4