mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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95 lines
3.6 KiB
C++
95 lines
3.6 KiB
C++
/*
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* Copyright (c) 2018-2020 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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#include <stratosphere.hpp>
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#include "dmnt2_software_breakpoint.hpp"
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#include "dmnt2_debug_process.hpp"
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#include "dmnt2_debug_log.hpp"
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namespace ams::dmnt {
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namespace {
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constexpr const u8 Aarch64BreakInstruction[] = {0xFF, 0xFF, 0xFF, 0xE7};
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constexpr const u8 Aarch32BreakInstruction[] = {0xFE, 0xDE, 0xFF, 0xE7};
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constexpr const u8 Aarch32ThumbBreakInstruction[] = {0x80, 0xB6};
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}
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Result SoftwareBreakPoint::Clear(DebugProcess *debug_process) {
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Result result = svc::ResultInvalidArgument();
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if (m_in_use) {
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if (m_address) {
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result = debug_process->WriteMemory(std::addressof(m_insn), m_address, m_size);
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if (R_SUCCEEDED(result)) {
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AMS_DMNT2_GDB_LOG_DEBUG("SoftwareBreakPoint::Clear %p 0x%lx, insn=0x%x\n", this, m_address, m_insn);
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} else {
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AMS_DMNT2_GDB_LOG_DEBUG("SoftwareBreakPoint::Clear %p 0x%lx, insn=0x%x, !!! Fail %08x !!!\n", this, m_address, m_insn, result.GetValue());
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}
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this->Reset();
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} else {
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AMS_DMNT2_GDB_LOG_ERROR("SoftwareBreakPoint::Clear %p 0x%lx, insn=0x%x, !!! Null Address !!!\n", this, m_address, m_insn);
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}
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}
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return result;
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}
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Result SoftwareBreakPoint::Set(DebugProcess *debug_process, uintptr_t address, size_t size, bool is_step) {
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/* Set fields. */
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m_is_step = is_step;
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m_address = address;
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m_size = size;
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/* Read our instruction. */
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Result result = debug_process->ReadMemory(std::addressof(m_insn), m_address, m_size);
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AMS_DMNT2_GDB_LOG_DEBUG("SoftwareBreakPoint::Set %p 0x%lx, insn=0x%x\n", this, m_address, m_insn);
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/* Set the breakpoint. */
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if (debug_process->Is64Bit()) {
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if (m_size == sizeof(Aarch64BreakInstruction)) {
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result = debug_process->WriteMemory(Aarch64BreakInstruction, m_address, m_size);
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} else {
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result = svc::ResultInvalidArgument();
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}
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} else {
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if (m_size == sizeof(Aarch32BreakInstruction) || m_size == sizeof(Aarch32ThumbBreakInstruction)) {
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result = debug_process->WriteMemory(m_size == sizeof(Aarch32BreakInstruction) ? Aarch32BreakInstruction : Aarch32ThumbBreakInstruction, m_address, m_size);
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} else {
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result = svc::ResultInvalidArgument();
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}
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}
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/* Check that we succeeded. */
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if (R_SUCCEEDED(result)) {
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m_in_use = true;
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}
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return result;
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}
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SoftwareBreakPointManager::SoftwareBreakPointManager(DebugProcess *debug_process) : BreakPointManager(debug_process) {
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/* ... */
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}
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BreakPointBase *SoftwareBreakPointManager::GetBreakPoint(size_t index) {
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if (index < util::size(m_breakpoints)) {
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return m_breakpoints + index;
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} else {
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return nullptr;
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}
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}
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}
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