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/*
* Copyright (C) 2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WasmBreakpointManager.h"
#if ENABLE(WEBASSEMBLY)
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
#include "Options.h"
#include <wtf/DataLog.h>
#include <wtf/RawPointer.h>
#include <wtf/TZoneMallocInlines.h>
namespace JSC {
namespace Wasm {
WTF_MAKE_TZONE_ALLOCATED_IMPL(BreakpointManager);
BreakpointManager::~BreakpointManager()
{
clearAllBreakpoints();
}
void BreakpointManager::setBreakpoint(VirtualAddress address, Breakpoint&& breakpoint)
{
breakpoint.patchBreakpoint();
dataLogLnIf(Options::verboseWasmDebugger(), "[BreakpointManager] setBreakpoint ", breakpoint, " at moduleAddress:", address);
if (breakpoint.isOneTimeBreakpoint())
m_oneTimeBreakpoints.add(address);
m_breakpoints.set(address, WTFMove(breakpoint));
}
Breakpoint* BreakpointManager::findBreakpoint(VirtualAddress address)
{
if (auto it = m_breakpoints.find(address); it != m_breakpoints.end())
return &it->value;
return nullptr;
}
bool BreakpointManager::removeBreakpoint(VirtualAddress address)
{
auto it = m_breakpoints.find(address);
RELEASE_ASSERT(it != m_breakpoints.end());
Breakpoint& breakpoint = it->value;
dataLogLnIf(Options::verboseWasmDebugger(), "[BreakpointManager] Removing ", breakpoint, " at ", address, " m_breakpoints.size()=", m_breakpoints.size());
it->value.restorePatch();
m_breakpoints.remove(it);
return true;
}
void BreakpointManager::clearAllOneTimeBreakpoints()
{
for (VirtualAddress address : m_oneTimeBreakpoints)
removeBreakpoint(address);
m_oneTimeBreakpoints.clear();
dataLogLnIf(Options::verboseWasmDebugger(), "[BreakpointManager] Cleared all one-time breakpoints");
}
void BreakpointManager::clearAllBreakpoints()
{
for (auto& [_, breakpoint] : m_breakpoints)
breakpoint.restorePatch();
m_breakpoints.clear();
RELEASE_ASSERT(m_oneTimeBreakpoints.isEmpty());
}
} // namespace Wasm
} // namespace JSC
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
#endif // ENABLE(WEBASSEMBLY)
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