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https://git.tardis.systems/mirrors/yuzu
synced 2025-10-31 10:44:49 +01:00
GDBStub improvements:
- Add FPU support - Fix access to TLS Fix clang-format.
This commit is contained in:
Hedges
parent
65bd03d74c
commit
af42320021
@ -377,7 +377,7 @@ if (CLANG_FORMAT)
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set(CCOMMENT "Running clang format against all the .h and .cpp files in src/")
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if (WIN32)
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add_custom_target(clang-format
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COMMAND powershell.exe -Command "${CLANG_FORMAT} -i @(Get-ChildItem -Recurse ${SRCS}/* -Include \'*.h\', \'*.cpp\')"
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COMMAND powershell.exe -Command "Get-ChildItem ${SRCS}/* -Include *.cpp,*.h -Recurse | Foreach {${CLANG_FORMAT} -i $_.fullname}"
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COMMENT ${CCOMMENT})
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elseif(MINGW)
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add_custom_target(clang-format
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@ -71,10 +71,6 @@ constexpr u32 PSTATE_REGISTER = 33;
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constexpr u32 UC_ARM64_REG_Q0 = 34;
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constexpr u32 FPCR_REGISTER = 66;
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// TODO/WiP - Used while working on support for FPU
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constexpr u32 TODO_DUMMY_REG_997 = 997;
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constexpr u32 TODO_DUMMY_REG_998 = 998;
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// For sample XML files see the GDB source /gdb/features
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// GDB also wants the l character at the start
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// This XML defines what the registers are for this specific ARM device
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@ -260,6 +256,36 @@ static void RegWrite(std::size_t id, u64 val, Kernel::Thread* thread = nullptr)
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}
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}
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static u128 FpuRead(std::size_t id, Kernel::Thread* thread = nullptr) {
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if (!thread) {
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return u128{0};
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}
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auto& thread_context = thread->GetContext();
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if (id >= UC_ARM64_REG_Q0 && id < FPCR_REGISTER) {
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return thread_context.vector_registers[id - UC_ARM64_REG_Q0];
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} else if (id == FPCR_REGISTER) {
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return u128{thread_context.fpcr, 0};
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} else {
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return u128{0};
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}
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}
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static void FpuWrite(std::size_t id, u128 val, Kernel::Thread* thread = nullptr) {
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if (!thread) {
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return;
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}
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auto& thread_context = thread->GetContext();
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if (id >= UC_ARM64_REG_Q0 && id < FPCR_REGISTER) {
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thread_context.vector_registers[id - UC_ARM64_REG_Q0] = val;
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} else if (id == FPCR_REGISTER) {
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thread_context.fpcr = val[0];
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}
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}
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/**
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* Turns hex string character into the equivalent byte.
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*
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@ -409,6 +435,27 @@ static u64 GdbHexToLong(const u8* src) {
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return output;
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}
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/**
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* Convert a gdb-formatted hex string into a u128.
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*
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* @param src Pointer to hex string.
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*/
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static u128 GdbHexToU128(const u8* src) {
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u128 output;
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for (int i = 0; i < 16; i += 2) {
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output[0] = (output[0] << 4) | HexCharToValue(src[15 - i - 1]);
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output[0] = (output[0] << 4) | HexCharToValue(src[15 - i]);
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}
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for (int i = 0; i < 16; i += 2) {
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output[1] = (output[1] << 4) | HexCharToValue(src[16 + 15 - i - 1]);
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output[1] = (output[1] << 4) | HexCharToValue(src[16 + 15 - i]);
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}
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return output;
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}
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/// Read a byte from the gdb client.
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static u8 ReadByte() {
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u8 c;
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@ -599,8 +646,7 @@ static void HandleQuery() {
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for (u32 core = 0; core < Core::NUM_CPU_CORES; core++) {
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const auto& threads = Core::System::GetInstance().Scheduler(core).GetThreadList();
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for (const auto& thread : threads) {
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val += fmt::format("{:x}", thread->GetThreadID());
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val += ",";
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val += fmt::format("{:x},", thread->GetThreadID());
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}
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}
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val.pop_back();
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@ -791,11 +837,15 @@ static void ReadRegister() {
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} else if (id == PSTATE_REGISTER) {
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IntToGdbHex(reply, static_cast<u32>(RegRead(id, current_thread)));
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} else if (id >= UC_ARM64_REG_Q0 && id < FPCR_REGISTER) {
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LongToGdbHex(reply, RegRead(id, current_thread));
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u128 r = FpuRead(id, current_thread);
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LongToGdbHex(reply, r[0]);
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LongToGdbHex(reply + 16, r[1]);
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} else if (id == FPCR_REGISTER) {
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LongToGdbHex(reply, RegRead(TODO_DUMMY_REG_998, current_thread));
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} else {
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LongToGdbHex(reply, RegRead(TODO_DUMMY_REG_997, current_thread));
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u128 r = FpuRead(id, current_thread);
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IntToGdbHex(reply, static_cast<u32>(r[0]));
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} else if (id == FPCR_REGISTER + 1) {
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u128 r = FpuRead(id, current_thread);
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IntToGdbHex(reply, static_cast<u32>(r[0] >> 32));
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}
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SendReply(reinterpret_cast<char*>(reply));
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@ -822,13 +872,18 @@ static void ReadRegisters() {
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bufptr += 8;
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for (u32 reg = UC_ARM64_REG_Q0; reg <= UC_ARM64_REG_Q0 + 31; reg++) {
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LongToGdbHex(bufptr + reg * 16, RegRead(reg, current_thread));
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u128 r;
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for (u32 reg = UC_ARM64_REG_Q0; reg < FPCR_REGISTER; reg++) {
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r = FpuRead(reg, current_thread);
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LongToGdbHex(bufptr + reg * 32, r[0]);
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LongToGdbHex(bufptr + reg * 32 + 16, r[1]);
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}
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bufptr += 32 * 32;
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LongToGdbHex(bufptr, RegRead(TODO_DUMMY_REG_998, current_thread));
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r = FpuRead(FPCR_REGISTER, current_thread);
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IntToGdbHex(bufptr, static_cast<u32>(r[0]));
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bufptr += 8;
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@ -853,14 +908,12 @@ static void WriteRegister() {
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} else if (id == PSTATE_REGISTER) {
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RegWrite(id, GdbHexToInt(buffer_ptr), current_thread);
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} else if (id >= UC_ARM64_REG_Q0 && id < FPCR_REGISTER) {
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RegWrite(id, GdbHexToLong(buffer_ptr), current_thread);
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FpuWrite(id, GdbHexToU128(buffer_ptr), current_thread);
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} else if (id == FPCR_REGISTER) {
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RegWrite(TODO_DUMMY_REG_998, GdbHexToLong(buffer_ptr), current_thread);
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} else {
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RegWrite(TODO_DUMMY_REG_997, GdbHexToLong(buffer_ptr), current_thread);
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} else if (id == FPCR_REGISTER + 1) {
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}
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// Update Unicorn context skipping scheduler, no running threads at this point
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// Update ARM context, skipping scheduler - no running threads at this point
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Core::System::GetInstance()
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.ArmInterface(current_core)
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.LoadContext(current_thread->GetContext());
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@ -885,13 +938,13 @@ static void WriteRegisters() {
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} else if (reg >= UC_ARM64_REG_Q0 && reg < FPCR_REGISTER) {
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RegWrite(reg, GdbHexToLong(buffer_ptr + i * 16), current_thread);
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} else if (reg == FPCR_REGISTER) {
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RegWrite(TODO_DUMMY_REG_998, GdbHexToLong(buffer_ptr + i * 16), current_thread);
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} else {
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UNIMPLEMENTED();
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RegWrite(FPCR_REGISTER, GdbHexToLong(buffer_ptr + i * 16), current_thread);
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} else if (reg == FPCR_REGISTER + 1) {
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RegWrite(FPCR_REGISTER, GdbHexToLong(buffer_ptr + i * 16), current_thread);
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}
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}
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// Update Unicorn context skipping scheduler, no running threads at this point
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// Update ARM context, skipping scheduler - no running threads at this point
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Core::System::GetInstance()
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.ArmInterface(current_core)
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.LoadContext(current_thread->GetContext());
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@ -917,12 +970,6 @@ static void ReadMemory() {
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SendReply("E01");
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}
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const auto& vm_manager = Core::CurrentProcess()->VMManager();
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if (addr < vm_manager.GetCodeRegionBaseAddress() ||
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addr >= vm_manager.GetMapRegionEndAddress()) {
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return SendReply("E00");
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}
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if (!Memory::IsValidVirtualAddress(addr)) {
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return SendReply("E00");
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}
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@ -967,7 +1014,7 @@ void Break(bool is_memory_break) {
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static void Step() {
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if (command_length > 1) {
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RegWrite(PC_REGISTER, GdbHexToLong(command_buffer + 1), current_thread);
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// Update Unicorn context skipping scheduler, no running threads at this point
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// Update ARM context, skipping scheduler - no running threads at this point
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Core::System::GetInstance()
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.ArmInterface(current_core)
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.LoadContext(current_thread->GetContext());
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@ -1010,7 +1057,7 @@ 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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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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p.insert({addr, breakpoint});
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@ -1321,13 +1368,15 @@ void SetCpuStepFlag(bool is_step) {
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}
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void SendTrap(Kernel::Thread* thread, int trap) {
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if (send_trap) {
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if (!halt_loop || current_thread == thread) {
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current_thread = thread;
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SendSignal(thread, trap);
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}
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halt_loop = true;
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send_trap = false;
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if (!send_trap) {
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return;
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}
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if (!halt_loop || current_thread == thread) {
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current_thread = thread;
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SendSignal(thread, trap);
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}
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halt_loop = true;
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send_trap = false;
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}
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}; // namespace GDBStub
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