diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/arm/dynarmic/arm_dynarmic_32.cpp | 103 |
1 files changed, 84 insertions, 19 deletions
diff --git a/src/core/arm/dynarmic/arm_dynarmic_32.cpp b/src/core/arm/dynarmic/arm_dynarmic_32.cpp index 7c82d0b96..10cf72a45 100644 --- a/src/core/arm/dynarmic/arm_dynarmic_32.cpp +++ b/src/core/arm/dynarmic/arm_dynarmic_32.cpp @@ -29,64 +29,94 @@ using namespace Common::Literals; class DynarmicCallbacks32 : public Dynarmic::A32::UserCallbacks { public: explicit DynarmicCallbacks32(ARM_Dynarmic_32& parent_) - : parent{parent_}, memory(parent.system.Memory()) {} + : parent{parent_}, + memory(parent.system.Memory()), debugger_enabled{parent.system.DebuggerEnabled()} {} u8 MemoryRead8(u32 vaddr) override { + CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Read); return memory.Read8(vaddr); } u16 MemoryRead16(u32 vaddr) override { + CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Read); return memory.Read16(vaddr); } u32 MemoryRead32(u32 vaddr) override { + CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Read); return memory.Read32(vaddr); } u64 MemoryRead64(u32 vaddr) override { + CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Read); return memory.Read64(vaddr); } + std::optional<u32> MemoryReadCode(u32 vaddr) override { + if (!memory.IsValidVirtualAddressRange(vaddr, sizeof(u32))) { + return std::nullopt; + } + return MemoryRead32(vaddr); + } void MemoryWrite8(u32 vaddr, u8 value) override { - memory.Write8(vaddr, value); + if (CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write)) { + memory.Write8(vaddr, value); + } } void MemoryWrite16(u32 vaddr, u16 value) override { - memory.Write16(vaddr, value); + if (CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write)) { + memory.Write16(vaddr, value); + } } void MemoryWrite32(u32 vaddr, u32 value) override { - memory.Write32(vaddr, value); + if (CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write)) { + memory.Write32(vaddr, value); + } } void MemoryWrite64(u32 vaddr, u64 value) override { - memory.Write64(vaddr, value); + if (CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write)) { + memory.Write64(vaddr, value); + } } bool MemoryWriteExclusive8(u32 vaddr, u8 value, u8 expected) override { - return memory.WriteExclusive8(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive8(vaddr, value, expected); } bool MemoryWriteExclusive16(u32 vaddr, u16 value, u16 expected) override { - return memory.WriteExclusive16(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive16(vaddr, value, expected); } bool MemoryWriteExclusive32(u32 vaddr, u32 value, u32 expected) override { - return memory.WriteExclusive32(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive32(vaddr, value, expected); } bool MemoryWriteExclusive64(u32 vaddr, u64 value, u64 expected) override { - return memory.WriteExclusive64(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive64(vaddr, value, expected); } void InterpreterFallback(u32 pc, std::size_t num_instructions) override { parent.LogBacktrace(); - UNIMPLEMENTED_MSG("This should never happen, pc = {:08X}, code = {:08X}", pc, - MemoryReadCode(pc)); + LOG_ERROR(Core_ARM, + "Unimplemented instruction @ 0x{:X} for {} instructions (instr = {:08X})", pc, + num_instructions, MemoryRead32(pc)); } void ExceptionRaised(u32 pc, Dynarmic::A32::Exception exception) override { - if (parent.system.DebuggerEnabled()) { - parent.jit.load()->Regs()[15] = pc; - parent.jit.load()->HaltExecution(ARM_Interface::breakpoint); + switch (exception) { + case Dynarmic::A32::Exception::NoExecuteFault: + LOG_CRITICAL(Core_ARM, "Cannot execute instruction at unmapped address {:#08x}", pc); + ReturnException(pc, ARM_Interface::no_execute); return; - } + default: + if (debugger_enabled) { + ReturnException(pc, ARM_Interface::breakpoint); + return; + } - parent.LogBacktrace(); - LOG_CRITICAL(Core_ARM, - "ExceptionRaised(exception = {}, pc = {:08X}, code = {:08X}, thumb = {})", - exception, pc, MemoryReadCode(pc), parent.IsInThumbMode()); + parent.LogBacktrace(); + LOG_CRITICAL(Core_ARM, + "ExceptionRaised(exception = {}, pc = {:08X}, code = {:08X}, thumb = {})", + exception, pc, MemoryRead32(pc), parent.IsInThumbMode()); + } } void CallSVC(u32 swi) override { @@ -117,9 +147,31 @@ public: return std::max<s64>(parent.system.CoreTiming().GetDowncount(), 0); } + bool CheckMemoryAccess(VAddr addr, u64 size, Kernel::DebugWatchpointType type) { + if (!debugger_enabled) { + return true; + } + + const auto match{parent.MatchingWatchpoint(addr, size, type)}; + if (match) { + parent.halted_watchpoint = match; + ReturnException(parent.jit.load()->Regs()[15], ARM_Interface::watchpoint); + return false; + } + + return true; + } + + void ReturnException(u32 pc, Dynarmic::HaltReason hr) { + parent.SaveContext(parent.breakpoint_context); + parent.breakpoint_context.cpu_registers[15] = pc; + parent.jit.load()->HaltExecution(hr); + } + ARM_Dynarmic_32& parent; Core::Memory::Memory& memory; std::size_t num_interpreted_instructions{}; + bool debugger_enabled{}; static constexpr u64 minimum_run_cycles = 1000U; }; @@ -154,6 +206,11 @@ std::shared_ptr<Dynarmic::A32::Jit> ARM_Dynarmic_32::MakeJit(Common::PageTable* config.code_cache_size = 512_MiB; config.far_code_offset = 400_MiB; + // Allow memory fault handling to work + if (system.DebuggerEnabled()) { + config.check_halt_on_memory_access = true; + } + // null_jit if (!page_table) { // Don't waste too much memory on null_jit @@ -248,6 +305,14 @@ u32 ARM_Dynarmic_32::GetSvcNumber() const { return svc_swi; } +const Kernel::DebugWatchpoint* ARM_Dynarmic_32::HaltedWatchpoint() const { + return halted_watchpoint; +} + +void ARM_Dynarmic_32::RewindBreakpointInstruction() { + LoadContext(breakpoint_context); +} + ARM_Dynarmic_32::ARM_Dynarmic_32(System& system_, CPUInterrupts& interrupt_handlers_, bool uses_wall_clock_, ExclusiveMonitor& exclusive_monitor_, std::size_t core_index_) |