Add single stepping logic for linux arm

Linux arm don't support hardware stepping (neither mismatch
breakpoints). This patch implement signle stepping with doing a software
emulation of the next instruction and then setting a temporary
breakpoint at the address where the thread will stop next.

Differential revision: http://reviews.llvm.org/D8976

llvm-svn: 234987

1 files changed, 5 insertions, 0 deletions

diff --git a/lldb/source/Initialization/SystemInitializerCommon.cpp b/lldb/source/Initialization/SystemInitializerCommon.cpp
index e4a1a302026..b57072f682b 100644
--- a/lldb/source/Initialization/SystemInitializerCommon.cpp
+++ b/lldb/source/Initialization/SystemInitializerCommon.cpp
@@ -17,6 +17,7 @@
 
 #include "Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h"
 #include "Plugins/DynamicLoader/POSIX-DYLD/DynamicLoaderPOSIXDYLD.h"
+#include "Plugins/Instruction/ARM/EmulateInstructionARM.h"
 #include "Plugins/ObjectContainer/BSD-Archive/ObjectContainerBSDArchive.h"
 #include "Plugins/ObjectContainer/Universal-Mach-O/ObjectContainerUniversalMachO.h"
 #include "Plugins/ObjectFile/ELF/ObjectFileELF.h"
@@ -110,6 +111,8 @@ SystemInitializerCommon::Initialize()
     PlatformKalimba::Initialize();
     platform_android::PlatformAndroid::Initialize();
 
+    EmulateInstructionARM::Initialize();
+
     //----------------------------------------------------------------------
     // Apple/Darwin hosted plugins
     //----------------------------------------------------------------------
@@ -157,6 +160,8 @@ SystemInitializerCommon::Terminate()
     PlatformRemoteiOS::Terminate();
     PlatformiOSSimulator::Terminate();
 
+    EmulateInstructionARM::Terminate();
+
 #if defined(__APPLE__)
     DynamicLoaderDarwinKernel::Terminate();
     ObjectFileMachO::Terminate();