commit 474c8abbcaf0ac55973b9f2afd5b1438fef7fd5b
author Ben Cheng <bccheng@google.com> Mon Sep 17 12:17:59 2012 -0700
committer Elliott Hughes <enh@google.com> Mon Sep 17 15:46:32 2012 -0700
tree 9cf01382057abe0c360f46c76a5e66f32f2ca735
parent f31a0600bb84e04280440c84a5966a624a89e117

Use 0xde as the poison value after JIT code cache reset.

(cherry-pick of 60497bbcee68d98b2bdcb3fb64682b00d61b942d.)

Change-Id: I4f8c1bac2ac3bdc1d931e91f3e2e8038fe4c2b5a

vm/compiler/codegen/arm/ArchUtility.cpp

diff --git a/vm/compiler/codegen/arm/ArchUtility.cpp b/vm/compiler/codegen/arm/ArchUtility.cpp
index 2f59193..9f87b7f 100644
--- a/vm/compiler/codegen/arm/ArchUtility.cpp
+++ b/vm/compiler/codegen/arm/ArchUtility.cpp
@@ -429,6 +429,10 @@
 /* Target-specific cache clearing */
 void dvmCompilerCacheClear(char *start, size_t size)
 {
-    /* 0 is an invalid opcode for arm. */
-    memset(start, 0, size);
+    /*
+     * de is an invalid opcode for arm.
+     * From gdb disassembly:  <UNDEFINED> instruction: 0xdede
+     */
+
+    memset(start, 0xde, size);
 }