70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
/*
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* Copyright (c) 2019-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "defines.hpp"
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#include "hvisor_synchronization.hpp"
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#define MAX_SW_BREAKPOINTS 16
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namespace ams::hvisor {
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class SwBreakpointManager {
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NON_COPYABLE(SwBreakpointManager);
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NON_MOVEABLE(SwBreakpointManager);
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private:
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struct Breakpoint {
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uintptr_t address;
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u32 savedInstruction;
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u16 uid;
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bool persistent;
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bool applied;
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};
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private:
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static SwBreakpointManager instance;
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private:
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mutable RecursiveSpinlock m_lock{};
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std::atomic<bool> m_triedToApplyOrRevertBreakpoint{};
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u32 m_bpUniqueCounter = 0;
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size_t m_numBreakpoints = 0;
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std::array<Breakpoint, MAX_SW_BREAKPOINTS> m_breakpoints{};
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private:
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size_t FindClosest(uintptr_t addr) const;
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bool DoApply(size_t id);
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bool DoRevert(size_t id);
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// TODO apply, revert handler
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bool Apply(size_t id);
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bool Revert(size_t id);
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public:
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static SwBreakpointManager &GetInstance() { return instance; }
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public:
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int Add(uintptr_t addr, bool persistent);
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int Remove(uintptr_t addr, bool keepPersistent);
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int RemoveAll(bool keepPersistent);
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public:
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constexpr SwBreakpointManager() = default;
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};
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}
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