Add the capability to display the number of supported hardware watchpoints to the "watchpoint list" command.

Add default Process::GetWatchpointSupportInfo() impl which returns an error of "not supported".
Add "qWatchpointSupportInfo" packet to the gdb communication layer to support this, and modify TestWatchpointCommands.py to test it.

llvm-svn: 157345

1 files changed, 11 insertions, 0 deletions

diff --git a/lldb/tools/debugserver/source/MacOSX/MachThreadList.cpp b/lldb/tools/debugserver/source/MacOSX/MachThreadList.cpp
index 207bc77f32b..e2aa0f2eedd 100644
--- a/lldb/tools/debugserver/source/MacOSX/MachThreadList.cpp
+++ b/lldb/tools/debugserver/source/MacOSX/MachThreadList.cpp
@@ -509,6 +509,17 @@ MachThreadList::DisableHardwareWatchpoint (const DNBBreakpoint* wp) const
 }
 
 uint32_t
+MachThreadList::NumSupportedHardwareWatchpoints () const
+{
+    PTHREAD_MUTEX_LOCKER (locker, m_threads_mutex);
+    const uint32_t num_threads = m_threads.size();
+    // Use an arbitrary thread to retrieve the number of supported hardware watchpoints.
+    if (num_threads)
+        return m_threads[0]->NumSupportedHardwareWatchpoints();
+    return 0;
+}
+
+uint32_t
 MachThreadList::GetThreadIndexForThreadStoppedWithSignal (const int signo) const
 {
     PTHREAD_MUTEX_LOCKER (locker, m_threads_mutex);