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//===-- NativeThreadNetBSD.cpp -------------------------------- -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "NativeThreadNetBSD.h"
#include "NativeRegisterContextNetBSD.h"
#include "NativeProcessNetBSD.h"
#include "Plugins/Process/POSIX/CrashReason.h"
#include "Plugins/Process/POSIX/ProcessPOSIXLog.h"
#include "lldb/Core/RegisterValue.h"
#include "lldb/Core/State.h"
#include "lldb/Utility/LLDBAssert.h"
#include <sstream>
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::process_netbsd;
NativeThreadNetBSD::NativeThreadNetBSD(NativeProcessNetBSD &process,
lldb::tid_t tid)
: NativeThreadProtocol(process, tid), m_state(StateType::eStateInvalid),
m_stop_info(), m_reg_context_up(
NativeRegisterContextNetBSD::CreateHostNativeRegisterContextNetBSD(process.GetArchitecture(), *this)
), m_stop_description() {}
void NativeThreadNetBSD::SetStoppedBySignal(uint32_t signo,
const siginfo_t *info) {
Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_THREAD));
LLDB_LOG(log, "tid = {0} in called with signal {1}", GetID(), signo);
SetStopped();
m_stop_info.reason = StopReason::eStopReasonSignal;
m_stop_info.details.signal.signo = signo;
m_stop_description.clear();
if (info) {
switch (signo) {
case SIGSEGV:
case SIGBUS:
case SIGFPE:
case SIGILL:
const auto reason = GetCrashReason(*info);
m_stop_description = GetCrashReasonString(reason, *info);
break;
}
}
}
void NativeThreadNetBSD::SetStoppedByBreakpoint() {
SetStopped();
m_stop_info.reason = StopReason::eStopReasonBreakpoint;
m_stop_info.details.signal.signo = SIGTRAP;
}
void NativeThreadNetBSD::SetStoppedByTrace() {
SetStopped();
m_stop_info.reason = StopReason::eStopReasonTrace;
m_stop_info.details.signal.signo = SIGTRAP;
}
void NativeThreadNetBSD::SetStoppedByExec() {
SetStopped();
m_stop_info.reason = StopReason::eStopReasonExec;
m_stop_info.details.signal.signo = SIGTRAP;
}
void NativeThreadNetBSD::SetStoppedByWatchpoint(uint32_t wp_index) {
SetStopped();
lldbassert(wp_index != LLDB_INVALID_INDEX32 && "wp_index cannot be invalid");
std::ostringstream ostr;
ostr << GetRegisterContext().GetWatchpointAddress(wp_index) << " ";
ostr << wp_index;
ostr << " " << GetRegisterContext().GetWatchpointHitAddress(wp_index);
m_stop_description = ostr.str();
m_stop_info.reason = StopReason::eStopReasonWatchpoint;
m_stop_info.details.signal.signo = SIGTRAP;
}
void NativeThreadNetBSD::SetStopped() {
const StateType new_state = StateType::eStateStopped;
m_state = new_state;
m_stop_description.clear();
}
void NativeThreadNetBSD::SetRunning() {
m_state = StateType::eStateRunning;
m_stop_info.reason = StopReason::eStopReasonNone;
}
void NativeThreadNetBSD::SetStepping() {
m_state = StateType::eStateStepping;
m_stop_info.reason = StopReason::eStopReasonNone;
}
std::string NativeThreadNetBSD::GetName() { return std::string(""); }
lldb::StateType NativeThreadNetBSD::GetState() { return m_state; }
bool NativeThreadNetBSD::GetStopReason(ThreadStopInfo &stop_info,
std::string &description) {
Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_THREAD));
description.clear();
switch (m_state) {
case eStateStopped:
case eStateCrashed:
case eStateExited:
case eStateSuspended:
case eStateUnloaded:
stop_info = m_stop_info;
description = m_stop_description;
return true;
case eStateInvalid:
case eStateConnected:
case eStateAttaching:
case eStateLaunching:
case eStateRunning:
case eStateStepping:
case eStateDetached:
LLDB_LOG(log, "tid = {0} in state {1} cannot answer stop reason", GetID(),
StateAsCString(m_state));
return false;
}
llvm_unreachable("unhandled StateType!");
}
NativeRegisterContext& NativeThreadNetBSD::GetRegisterContext() {
assert(m_reg_context_up);
return *m_reg_context_up;
}
Status NativeThreadNetBSD::SetWatchpoint(lldb::addr_t addr, size_t size,
uint32_t watch_flags, bool hardware) {
if (!hardware)
return Status("not implemented");
if (m_state == eStateLaunching)
return Status();
Status error = RemoveWatchpoint(addr);
if (error.Fail())
return error;
uint32_t wp_index = GetRegisterContext().SetHardwareWatchpoint(addr, size, watch_flags);
if (wp_index == LLDB_INVALID_INDEX32)
return Status("Setting hardware watchpoint failed.");
m_watchpoint_index_map.insert({addr, wp_index});
return Status();
}
Status NativeThreadNetBSD::RemoveWatchpoint(lldb::addr_t addr) {
auto wp = m_watchpoint_index_map.find(addr);
if (wp == m_watchpoint_index_map.end())
return Status();
uint32_t wp_index = wp->second;
m_watchpoint_index_map.erase(wp);
if (GetRegisterContext().ClearHardwareWatchpoint(wp_index))
return Status();
return Status("Clearing hardware watchpoint failed.");
}
Status NativeThreadNetBSD::SetHardwareBreakpoint(lldb::addr_t addr,
size_t size) {
if (m_state == eStateLaunching)
return Status();
Status error = RemoveHardwareBreakpoint(addr);
if (error.Fail())
return error;
uint32_t bp_index = GetRegisterContext().SetHardwareBreakpoint(addr, size);
if (bp_index == LLDB_INVALID_INDEX32)
return Status("Setting hardware breakpoint failed.");
m_hw_break_index_map.insert({addr, bp_index});
return Status();
}
Status NativeThreadNetBSD::RemoveHardwareBreakpoint(lldb::addr_t addr) {
auto bp = m_hw_break_index_map.find(addr);
if (bp == m_hw_break_index_map.end())
return Status();
uint32_t bp_index = bp->second;
if (GetRegisterContext().ClearHardwareBreakpoint(bp_index)) {
m_hw_break_index_map.erase(bp);
return Status();
}
return Status("Clearing hardware breakpoint failed.");
}
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