The Platform base class now maintains a list of trap handlers

aka asynchronous signal handlers, which subclasses should fill
in as appropriate.  For most Unix user process environments,
the one entry in this list is _sigtramp.  For bare-board and
kernel environments, there will be different sets of trap 
handlers.

The unwinder needs to know when a frame is a trap handler 
because the rules it enforces for the frame "above" the
trap handler is different from most middle-of-the-stack frames.

<rdar://problem/15835846> 

llvm-svn: 201300

1 files changed, 1 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Platform/Linux/PlatformLinux.cpp b/lldb/source/Plugins/Platform/Linux/PlatformLinux.cpp
index c30211c886a..3e42b6adb42 100644
--- a/lldb/source/Plugins/Platform/Linux/PlatformLinux.cpp
+++ b/lldb/source/Plugins/Platform/Linux/PlatformLinux.cpp
@@ -307,6 +307,7 @@ PlatformLinux::PlatformLinux (bool is_host) :
     Platform(is_host),  // This is the local host platform
     m_remote_platform_sp ()
 {
+    m_trap_handlers.push_back (ConstString ("_sigtramp"));
 }
 
 //------------------------------------------------------------------