Foe x86_64/i386, piggyback the hardware index of the fired watchpoint in the exception

data sent back to the debugger.  On the debugger side, use the opportunity during the
StopInfoMachException::CreateStopReasonWithMachException() method to set the hardware index
for the very watchpoint location.

llvm-svn: 139975

1 files changed, 4 insertions, 0 deletions

diff --git a/lldb/tools/debugserver/source/MacOSX/i386/DNBArchImplI386.cpp b/lldb/tools/debugserver/source/MacOSX/i386/DNBArchImplI386.cpp
index 8333bb94291..5554b06908f 100644
--- a/lldb/tools/debugserver/source/MacOSX/i386/DNBArchImplI386.cpp
+++ b/lldb/tools/debugserver/source/MacOSX/i386/DNBArchImplI386.cpp
@@ -645,7 +645,11 @@ DNBArchImplI386::NotifyException(MachException::Data& exc)
             nub_addr_t addr = 0;
             uint32_t hw_index = GetHardwareWatchpointHit(addr);
             if (hw_index != INVALID_NUB_HW_INDEX)
+            {
                 exc.exc_data[1] = addr;
+                // Piggyback the hw_index in the exc.data.
+                exc.exc_data.push_back(hw_index);
+            }
 
             return true;
         }