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Hardware breakpoints for Linux on Arm/AArch64 targets

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Please look at below differential link for upstream discussion.

Differential revision: https://reviews.llvm.org/D29669

llvm-svn: 296119
This commit is contained in:
Omair Javaid
2017-02-24 13:27:31 +00:00
parent d224c08efc
commit d5ffbad275
20 changed files with 707 additions and 144 deletions
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14
lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationServerLLGS.cpp
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@@ -2534,12 +2534,14 @@ GDBRemoteCommunicationServerLLGS::Handle_z(StringExtractorGDBRemote &packet) {
packet, "Too short z packet, missing software/hardware specifier");
bool want_breakpoint = true;
bool want_hardware = false;
const GDBStoppointType stoppoint_type =
GDBStoppointType(packet.GetS32(eStoppointInvalid));
switch (stoppoint_type) {
case eBreakpointHardware:
want_breakpoint = true;
want_hardware = true;
break;
case eBreakpointSoftware:
want_breakpoint = true;
@@ -2582,7 +2584,8 @@ GDBRemoteCommunicationServerLLGS::Handle_z(StringExtractorGDBRemote &packet) {
if (want_breakpoint) {
// Try to clear the breakpoint.
const Error error = m_debugged_process_sp->RemoveBreakpoint(addr);
const Error error =
m_debugged_process_sp->RemoveBreakpoint(addr, want_hardware);
if (error.Success())
return SendOKResponse();
Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_BREAKPOINTS));
@@ -3040,9 +3043,14 @@ GDBRemoteCommunicationServerLLGS::Handle_qWatchpointSupportInfo(
if (packet.GetChar() != ':')
return SendErrorResponse(67);
uint32_t num = m_debugged_process_sp->GetMaxWatchpoints();
auto hw_debug_cap = m_debugged_process_sp->GetHardwareDebugSupportInfo();
StreamGDBRemote response;
response.Printf("num:%d;", num);
if (hw_debug_cap == llvm::None)
response.Printf("num:0;");
else
response.Printf("num:%d;", hw_debug_cap->second);
return SendPacketNoLock(response.GetString());
}