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Merge pull request #2091 from FearlessTobi/port-4603
Port citra-emu/citra#4603: "gdbstub: only let Execute breakpoints write/restore BKPT opcodes into target memory"
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commit
ca482997fe
1 changed files with 10 additions and 4 deletions
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@ -507,8 +507,11 @@ static void RemoveBreakpoint(BreakpointType type, VAddr addr) {
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LOG_DEBUG(Debug_GDBStub, "gdb: removed a breakpoint: {:016X} bytes at {:016X} of type {}",
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bp->second.len, bp->second.addr, static_cast<int>(type));
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Memory::WriteBlock(bp->second.addr, bp->second.inst.data(), bp->second.inst.size());
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Core::System::GetInstance().InvalidateCpuInstructionCaches();
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if (type == BreakpointType::Execute) {
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Memory::WriteBlock(bp->second.addr, bp->second.inst.data(), bp->second.inst.size());
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Core::System::GetInstance().InvalidateCpuInstructionCaches();
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}
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p.erase(addr);
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}
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@ -1057,9 +1060,12 @@ static bool CommitBreakpoint(BreakpointType type, VAddr addr, u64 len) {
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breakpoint.addr = addr;
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breakpoint.len = len;
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Memory::ReadBlock(addr, breakpoint.inst.data(), breakpoint.inst.size());
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static constexpr std::array<u8, 4> btrap{0x00, 0x7d, 0x20, 0xd4};
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Memory::WriteBlock(addr, btrap.data(), btrap.size());
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Core::System::GetInstance().InvalidateCpuInstructionCaches();
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if (type == BreakpointType::Execute) {
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Memory::WriteBlock(addr, btrap.data(), btrap.size());
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Core::System::GetInstance().InvalidateCpuInstructionCaches();
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}
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p.insert({addr, breakpoint});
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LOG_DEBUG(Debug_GDBStub, "gdb: added {} breakpoint: {:016X} bytes at {:016X}",
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