From: Richard Earnshaw <rearnsha@arm.com>
Date: Sat, 14 Jun 2003 17:11:57 +0000 (+0000)
Subject: re PR target/3724 ([ARM]Illegal instruction when profiling optimized code on arm... 
X-Git-Tag: releases/gcc-3.4.0~5832
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2fbe6bc2ba00c56ea66269ba842278764bd89c8e;p=thirdparty%2Fgcc.git

re PR target/3724 ([ARM]Illegal instruction when profiling optimized code on arm-linux)

PR target/3724
* arm/linux-elf.h (PROFILE_HOOK): Define.

From-SVN: r67950
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4713756af4cd..480e734e86f1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-06-14  Richard Earnshaw  <rearnsha@arm.com>
+
+	PR target/3724
+	* arm/linux-elf.h (PROFILE_HOOK): Define.
+
 2003-06-14  Richard Earnshaw  <rearnsha@arm.com>
 
 	PR target/11183
diff --git a/gcc/config/arm/linux-elf.h b/gcc/config/arm/linux-elf.h
index 5da2b2420707..1a86e458927f 100644
--- a/gcc/config/arm/linux-elf.h
+++ b/gcc/config/arm/linux-elf.h
@@ -120,5 +120,10 @@
   fprintf (STREAM, "\tbl\tmcount%s\n", NEED_PLT_RELOC ? "(PLT)" : "");	\
 }
 
+/* The linux profiler clobbers the link register.  Make sure the
+   prologue knows to save it.  */
+#define PROFILE_HOOK(X)						\
+  emit_insn (gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, LR_REGNUM)))
+
 #undef  CC1_SPEC
 #define CC1_SPEC "%{profile:-p}"