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/*
Copyright (C) 2006 - 2015 Evan Teran
evan.teran@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "DebuggerCoreBase.h"
#include "Breakpoint.h"
#include "Configuration.h"
#include "edb.h"
#include <QtDebug>
namespace DebuggerCorePlugin {
/**
* removes all breakpoints
*
* @brief DebuggerCoreBase::clearBreakpoints
*/
void DebuggerCoreBase::clearBreakpoints() {
if (attached()) {
breakpoints_.clear();
}
}
/**
* creates a new breakpoint (only if there isn't already one at the given address)
*
* @brief DebuggerCoreBase::addBreakpoint
* @param address
* @return the breakpoint which was created/found
*/
std::shared_ptr<IBreakpoint> DebuggerCoreBase::addBreakpoint(edb::address_t address) {
try {
if (attached()) {
if (std::shared_ptr<IBreakpoint> bp = findBreakpoint(address)) {
return bp;
}
auto bp = std::make_shared<Breakpoint>(address);
breakpoints_[address] = bp;
return bp;
}
return nullptr;
} catch (const BreakpointCreationError &) {
qDebug() << "Failed to create breakpoint";
return nullptr;
}
}
/**
* @brief DebuggerCoreBase::findBreakpoint
* @param address
* @return the breakpoint at the given address or std::shared_ptr<IBreakpoint>()
*/
std::shared_ptr<IBreakpoint> DebuggerCoreBase::findBreakpoint(edb::address_t address) {
if (attached()) {
auto it = breakpoints_.find(address);
if (it != breakpoints_.end()) {
return it.value();
}
}
return nullptr;
}
/**
* similarly to findBreakpoint, finds a breakpoint near given address. But
* unlike findBreakpoint, this function looks for a breakpoint which ends
* up at this address after being triggered, instead of just starting there.
*
* @brief DebuggerCoreBase::findTriggeredBreakpoint
* @param address
* @return
*/
std::shared_ptr<IBreakpoint> DebuggerCoreBase::findTriggeredBreakpoint(edb::address_t address) {
if (attached()) {
for (const size_t size : Breakpoint::possibleRewindSizes()) {
const edb::address_t bpAddr = address - size;
const std::shared_ptr<IBreakpoint> bp = findBreakpoint(bpAddr);
if (bp && bp->address() == bpAddr) {
return bp;
}
}
}
return nullptr;
}
/**
* Decrements the reference count for the breakpoint found at the given address.
* If the refernce count goes to zero, then it is removed.
* This is a no-op if there is no breakpoint present.
*
* @brief DebuggerCoreBase::removeBreakpoint
* @param address
*/
void DebuggerCoreBase::removeBreakpoint(edb::address_t address) {
// TODO(eteran): assert paused
if (attached()) {
auto it = breakpoints_.find(address);
if (it != breakpoints_.end()) {
breakpoints_.erase(it);
}
}
}
/**
* Ends debug session, detaching from or killing debuggee according to user preferences
*
* @brief DebuggerCoreBase::endDebugSession
*/
void DebuggerCoreBase::endDebugSession() {
if (attached()) {
switch (edb::v1::config().close_behavior) {
case Configuration::Detach:
detach();
break;
case Configuration::Kill:
kill();
break;
case Configuration::KillIfLaunchedDetachIfAttached:
if (lastMeansOfCapture() == MeansOfCapture::Launch) {
kill();
} else {
detach();
}
break;
}
}
}
/**
* returns a copy of the BP list, these count as references to the BPs
* preventing full removal until this list is destructed.
*
* @brief DebuggerCoreBase::backupBreakpoints
* @return a list of shared_ptr's to the BPs
*/
DebuggerCoreBase::BreakpointList DebuggerCoreBase::backupBreakpoints() const {
return breakpoints_;
}
/**
* @brief DebuggerCoreBase::attached
* @return
*/
bool DebuggerCoreBase::attached() const {
return process() != nullptr;
}
/**
* @brief DebuggerCoreBase::supportedBreakpointTypes
* @return
*/
std::vector<IBreakpoint::BreakpointType> DebuggerCoreBase::supportedBreakpointTypes() const {
return Breakpoint::supportedTypes();
}
}
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