forked from OSchip/llvm-project
204 lines
6.5 KiB
C++
204 lines
6.5 KiB
C++
//===-- ThreadPlanRunToAddress.cpp ----------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Target/ThreadPlanRunToAddress.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/RegisterContext.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Target/Thread.h"
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#include "lldb/Utility/LLDBLog.h"
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/Stream.h"
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using namespace lldb;
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using namespace lldb_private;
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// ThreadPlanRunToAddress: Continue plan
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ThreadPlanRunToAddress::ThreadPlanRunToAddress(Thread &thread, Address &address,
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bool stop_others)
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: ThreadPlan(ThreadPlan::eKindRunToAddress, "Run to address plan", thread,
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eVoteNoOpinion, eVoteNoOpinion),
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m_stop_others(stop_others), m_addresses(), m_break_ids() {
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m_addresses.push_back(
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address.GetOpcodeLoadAddress(thread.CalculateTarget().get()));
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SetInitialBreakpoints();
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}
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ThreadPlanRunToAddress::ThreadPlanRunToAddress(Thread &thread,
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lldb::addr_t address,
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bool stop_others)
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: ThreadPlan(ThreadPlan::eKindRunToAddress, "Run to address plan", thread,
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eVoteNoOpinion, eVoteNoOpinion),
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m_stop_others(stop_others), m_addresses(), m_break_ids() {
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m_addresses.push_back(
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thread.CalculateTarget()->GetOpcodeLoadAddress(address));
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SetInitialBreakpoints();
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}
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ThreadPlanRunToAddress::ThreadPlanRunToAddress(
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Thread &thread, const std::vector<lldb::addr_t> &addresses,
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bool stop_others)
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: ThreadPlan(ThreadPlan::eKindRunToAddress, "Run to address plan", thread,
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eVoteNoOpinion, eVoteNoOpinion),
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m_stop_others(stop_others), m_addresses(addresses), m_break_ids() {
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// Convert all addresses into opcode addresses to make sure we set
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// breakpoints at the correct address.
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Target &target = thread.GetProcess()->GetTarget();
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std::vector<lldb::addr_t>::iterator pos, end = m_addresses.end();
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for (pos = m_addresses.begin(); pos != end; ++pos)
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*pos = target.GetOpcodeLoadAddress(*pos);
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SetInitialBreakpoints();
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}
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void ThreadPlanRunToAddress::SetInitialBreakpoints() {
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size_t num_addresses = m_addresses.size();
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m_break_ids.resize(num_addresses);
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for (size_t i = 0; i < num_addresses; i++) {
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Breakpoint *breakpoint;
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breakpoint =
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GetTarget().CreateBreakpoint(m_addresses[i], true, false).get();
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if (breakpoint != nullptr) {
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if (breakpoint->IsHardware() && !breakpoint->HasResolvedLocations())
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m_could_not_resolve_hw_bp = true;
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m_break_ids[i] = breakpoint->GetID();
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breakpoint->SetThreadID(m_tid);
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breakpoint->SetBreakpointKind("run-to-address");
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}
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}
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}
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ThreadPlanRunToAddress::~ThreadPlanRunToAddress() {
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size_t num_break_ids = m_break_ids.size();
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for (size_t i = 0; i < num_break_ids; i++) {
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GetTarget().RemoveBreakpointByID(m_break_ids[i]);
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}
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m_could_not_resolve_hw_bp = false;
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}
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void ThreadPlanRunToAddress::GetDescription(Stream *s,
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lldb::DescriptionLevel level) {
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size_t num_addresses = m_addresses.size();
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if (level == lldb::eDescriptionLevelBrief) {
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if (num_addresses == 0) {
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s->Printf("run to address with no addresses given.");
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return;
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} else if (num_addresses == 1)
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s->Printf("run to address: ");
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else
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s->Printf("run to addresses: ");
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for (size_t i = 0; i < num_addresses; i++) {
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DumpAddress(s->AsRawOstream(), m_addresses[i], sizeof(addr_t));
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s->Printf(" ");
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}
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} else {
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if (num_addresses == 0) {
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s->Printf("run to address with no addresses given.");
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return;
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} else if (num_addresses == 1)
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s->Printf("Run to address: ");
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else {
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s->Printf("Run to addresses: ");
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}
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for (size_t i = 0; i < num_addresses; i++) {
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if (num_addresses > 1) {
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s->Printf("\n");
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s->Indent();
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}
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DumpAddress(s->AsRawOstream(), m_addresses[i], sizeof(addr_t));
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s->Printf(" using breakpoint: %d - ", m_break_ids[i]);
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Breakpoint *breakpoint =
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GetTarget().GetBreakpointByID(m_break_ids[i]).get();
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if (breakpoint)
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breakpoint->Dump(s);
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else
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s->Printf("but the breakpoint has been deleted.");
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}
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}
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}
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bool ThreadPlanRunToAddress::ValidatePlan(Stream *error) {
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if (m_could_not_resolve_hw_bp) {
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if (error)
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error->Printf("Could not set hardware breakpoint(s)");
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return false;
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}
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// If we couldn't set the breakpoint for some reason, then this won't work.
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bool all_bps_good = true;
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size_t num_break_ids = m_break_ids.size();
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for (size_t i = 0; i < num_break_ids; i++) {
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if (m_break_ids[i] == LLDB_INVALID_BREAK_ID) {
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all_bps_good = false;
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if (error) {
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error->Printf("Could not set breakpoint for address: ");
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DumpAddress(error->AsRawOstream(), m_addresses[i], sizeof(addr_t));
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error->Printf("\n");
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}
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}
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}
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return all_bps_good;
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}
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bool ThreadPlanRunToAddress::DoPlanExplainsStop(Event *event_ptr) {
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return AtOurAddress();
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}
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bool ThreadPlanRunToAddress::ShouldStop(Event *event_ptr) {
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return AtOurAddress();
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}
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bool ThreadPlanRunToAddress::StopOthers() { return m_stop_others; }
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void ThreadPlanRunToAddress::SetStopOthers(bool new_value) {
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m_stop_others = new_value;
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}
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StateType ThreadPlanRunToAddress::GetPlanRunState() { return eStateRunning; }
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bool ThreadPlanRunToAddress::WillStop() { return true; }
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bool ThreadPlanRunToAddress::MischiefManaged() {
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Log *log = GetLog(LLDBLog::Step);
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if (AtOurAddress()) {
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// Remove the breakpoint
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size_t num_break_ids = m_break_ids.size();
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for (size_t i = 0; i < num_break_ids; i++) {
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if (m_break_ids[i] != LLDB_INVALID_BREAK_ID) {
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GetTarget().RemoveBreakpointByID(m_break_ids[i]);
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m_break_ids[i] = LLDB_INVALID_BREAK_ID;
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}
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}
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LLDB_LOGF(log, "Completed run to address plan.");
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ThreadPlan::MischiefManaged();
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return true;
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} else
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return false;
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}
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bool ThreadPlanRunToAddress::AtOurAddress() {
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lldb::addr_t current_address = GetThread().GetRegisterContext()->GetPC();
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bool found_it = false;
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size_t num_addresses = m_addresses.size();
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for (size_t i = 0; i < num_addresses; i++) {
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if (m_addresses[i] == current_address) {
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found_it = true;
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break;
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}
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}
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return found_it;
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}
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