diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/arm/dynarmic/arm_dynarmic_64.cpp | 154 |
1 files changed, 116 insertions, 38 deletions
diff --git a/src/core/arm/dynarmic/arm_dynarmic_64.cpp b/src/core/arm/dynarmic/arm_dynarmic_64.cpp index d4c67eafd..1d46f6d40 100644 --- a/src/core/arm/dynarmic/arm_dynarmic_64.cpp +++ b/src/core/arm/dynarmic/arm_dynarmic_64.cpp @@ -10,7 +10,6 @@ #include "common/logging/log.h" #include "common/page_table.h" #include "common/settings.h" -#include "core/arm/cpu_interrupt_handler.h" #include "core/arm/dynarmic/arm_dynarmic_64.h" #include "core/arm/dynarmic/arm_exclusive_monitor.h" #include "core/core.h" @@ -29,62 +28,89 @@ using namespace Common::Literals; class DynarmicCallbacks64 : public Dynarmic::A64::UserCallbacks { public: explicit DynarmicCallbacks64(ARM_Dynarmic_64& parent_) - : parent{parent_}, memory(parent.system.Memory()) {} + : parent{parent_}, + memory(parent.system.Memory()), debugger_enabled{parent.system.DebuggerEnabled()} {} u8 MemoryRead8(u64 vaddr) override { + CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Read); return memory.Read8(vaddr); } u16 MemoryRead16(u64 vaddr) override { + CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Read); return memory.Read16(vaddr); } u32 MemoryRead32(u64 vaddr) override { + CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Read); return memory.Read32(vaddr); } u64 MemoryRead64(u64 vaddr) override { + CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Read); return memory.Read64(vaddr); } Vector MemoryRead128(u64 vaddr) override { + CheckMemoryAccess(vaddr, 16, Kernel::DebugWatchpointType::Read); return {memory.Read64(vaddr), memory.Read64(vaddr + 8)}; } + std::optional<u32> MemoryReadCode(u64 vaddr) override { + if (!memory.IsValidVirtualAddressRange(vaddr, sizeof(u32))) { + return std::nullopt; + } + return memory.Read32(vaddr); + } void MemoryWrite8(u64 vaddr, u8 value) override { - memory.Write8(vaddr, value); + if (CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write)) { + memory.Write8(vaddr, value); + } } void MemoryWrite16(u64 vaddr, u16 value) override { - memory.Write16(vaddr, value); + if (CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write)) { + memory.Write16(vaddr, value); + } } void MemoryWrite32(u64 vaddr, u32 value) override { - memory.Write32(vaddr, value); + if (CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write)) { + memory.Write32(vaddr, value); + } } void MemoryWrite64(u64 vaddr, u64 value) override { - memory.Write64(vaddr, value); + if (CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write)) { + memory.Write64(vaddr, value); + } } void MemoryWrite128(u64 vaddr, Vector value) override { - memory.Write64(vaddr, value[0]); - memory.Write64(vaddr + 8, value[1]); + if (CheckMemoryAccess(vaddr, 16, Kernel::DebugWatchpointType::Write)) { + memory.Write64(vaddr, value[0]); + memory.Write64(vaddr + 8, value[1]); + } } bool MemoryWriteExclusive8(u64 vaddr, std::uint8_t value, std::uint8_t expected) override { - return memory.WriteExclusive8(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive8(vaddr, value, expected); } bool MemoryWriteExclusive16(u64 vaddr, std::uint16_t value, std::uint16_t expected) override { - return memory.WriteExclusive16(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive16(vaddr, value, expected); } bool MemoryWriteExclusive32(u64 vaddr, std::uint32_t value, std::uint32_t expected) override { - return memory.WriteExclusive32(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive32(vaddr, value, expected); } bool MemoryWriteExclusive64(u64 vaddr, std::uint64_t value, std::uint64_t expected) override { - return memory.WriteExclusive64(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive64(vaddr, value, expected); } bool MemoryWriteExclusive128(u64 vaddr, Vector value, Vector expected) override { - return memory.WriteExclusive128(vaddr, value, expected); + return CheckMemoryAccess(vaddr, 16, Kernel::DebugWatchpointType::Write) && + memory.WriteExclusive128(vaddr, value, expected); } void InterpreterFallback(u64 pc, std::size_t num_instructions) override { parent.LogBacktrace(); LOG_ERROR(Core_ARM, "Unimplemented instruction @ 0x{:X} for {} instructions (instr = {:08X})", pc, - num_instructions, MemoryReadCode(pc)); + num_instructions, memory.Read32(pc)); } void InstructionCacheOperationRaised(Dynarmic::A64::InstructionCacheOperation op, @@ -117,16 +143,19 @@ public: case Dynarmic::A64::Exception::SendEventLocal: case Dynarmic::A64::Exception::Yield: return; + case Dynarmic::A64::Exception::NoExecuteFault: + LOG_CRITICAL(Core_ARM, "Cannot execute instruction at unmapped address {:#016x}", pc); + ReturnException(pc, ARM_Interface::no_execute); + return; default: - if (parent.system.DebuggerEnabled()) { - parent.jit.load()->SetPC(pc); - parent.jit.load()->HaltExecution(ARM_Interface::breakpoint); + if (debugger_enabled) { + ReturnException(pc, ARM_Interface::breakpoint); return; } parent.LogBacktrace(); - ASSERT_MSG(false, "ExceptionRaised(exception = {}, pc = {:08X}, code = {:08X})", - static_cast<std::size_t>(exception), pc, MemoryReadCode(pc)); + LOG_CRITICAL(Core_ARM, "ExceptionRaised(exception = {}, pc = {:08X}, code = {:08X})", + static_cast<std::size_t>(exception), pc, memory.Read32(pc)); } } @@ -136,7 +165,9 @@ public: } void AddTicks(u64 ticks) override { - ASSERT_MSG(!parent.uses_wall_clock, "This should never happen - dynarmic ticking disabled"); + if (parent.uses_wall_clock) { + return; + } // Divide the number of ticks by the amount of CPU cores. TODO(Subv): This yields only a // rough approximation of the amount of executed ticks in the system, it may be thrown off @@ -151,7 +182,12 @@ public: } u64 GetTicksRemaining() override { - ASSERT_MSG(!parent.uses_wall_clock, "This should never happen - dynarmic ticking disabled"); + if (parent.uses_wall_clock) { + if (!IsInterrupted()) { + return minimum_run_cycles; + } + return 0U; + } return std::max<s64>(parent.system.CoreTiming().GetDowncount(), 0); } @@ -160,11 +196,37 @@ public: return parent.system.CoreTiming().GetClockTicks(); } + 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; + parent.jit.load()->HaltExecution(ARM_Interface::watchpoint); + return false; + } + + return true; + } + + void ReturnException(u64 pc, Dynarmic::HaltReason hr) { + parent.SaveContext(parent.breakpoint_context); + parent.breakpoint_context.pc = pc; + parent.jit.load()->HaltExecution(hr); + } + + bool IsInterrupted() { + return parent.system.Kernel().PhysicalCore(parent.core_index).IsInterrupted(); + } + ARM_Dynarmic_64& parent; Core::Memory::Memory& memory; u64 tpidrro_el0 = 0; u64 tpidr_el0 = 0; - static constexpr u64 minimum_run_cycles = 1000U; + bool debugger_enabled{}; + static constexpr u64 minimum_run_cycles = 10000U; }; std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable* page_table, @@ -188,7 +250,7 @@ std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable* config.fastmem_address_space_bits = address_space_bits; config.silently_mirror_fastmem = false; - config.fastmem_exclusive_access = true; + config.fastmem_exclusive_access = config.fastmem_pointer != nullptr; config.recompile_on_exclusive_fastmem_failure = true; } @@ -208,17 +270,20 @@ std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable* // Timing config.wall_clock_cntpct = uses_wall_clock; - config.enable_cycle_counting = !uses_wall_clock; + config.enable_cycle_counting = true; // Code cache size 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 config.code_cache_size = 8_MiB; - config.far_code_offset = 4_MiB; } // Safe optimizations @@ -249,6 +314,7 @@ std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable* } if (!Settings::values.cpuopt_fastmem) { config.fastmem_pointer = nullptr; + config.fastmem_exclusive_access = false; } if (!Settings::values.cpuopt_fastmem_exclusives) { config.fastmem_exclusive_access = false; @@ -308,10 +374,17 @@ u32 ARM_Dynarmic_64::GetSvcNumber() const { return svc_swi; } -ARM_Dynarmic_64::ARM_Dynarmic_64(System& system_, CPUInterrupts& interrupt_handlers_, - bool uses_wall_clock_, ExclusiveMonitor& exclusive_monitor_, - std::size_t core_index_) - : ARM_Interface{system_, interrupt_handlers_, uses_wall_clock_}, +const Kernel::DebugWatchpoint* ARM_Dynarmic_64::HaltedWatchpoint() const { + return halted_watchpoint; +} + +void ARM_Dynarmic_64::RewindBreakpointInstruction() { + LoadContext(breakpoint_context); +} + +ARM_Dynarmic_64::ARM_Dynarmic_64(System& system_, bool uses_wall_clock_, + ExclusiveMonitor& exclusive_monitor_, std::size_t core_index_) + : ARM_Interface{system_, uses_wall_clock_}, cb(std::make_unique<DynarmicCallbacks64>(*this)), core_index{core_index_}, exclusive_monitor{dynamic_cast<DynarmicExclusiveMonitor&>(exclusive_monitor_)}, null_jit{MakeJit(nullptr, 48)}, jit{null_jit.get()} {} @@ -398,6 +471,10 @@ void ARM_Dynarmic_64::SignalInterrupt() { jit.load()->HaltExecution(break_loop); } +void ARM_Dynarmic_64::ClearInterrupt() { + jit.load()->ClearHalt(break_loop); +} + void ARM_Dynarmic_64::ClearInstructionCache() { jit.load()->ClearCache(); } @@ -429,22 +506,22 @@ void ARM_Dynarmic_64::PageTableChanged(Common::PageTable& page_table, } std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_64::GetBacktrace(Core::System& system, - u64 fp, u64 lr) { + u64 fp, u64 lr, u64 pc) { std::vector<BacktraceEntry> out; auto& memory = system.Memory(); - // fp (= r29) points to the last frame record. - // Note that this is the frame record for the *previous* frame, not the current one. - // Note we need to subtract 4 from our last read to get the proper address + out.push_back({"", 0, pc, 0, ""}); + + // fp (= x29) points to the previous frame record. // Frame records are two words long: // fp+0 : pointer to previous frame record // fp+8 : value of lr for frame while (true) { out.push_back({"", 0, lr, 0, ""}); - if (!fp) { + if (!fp || (fp % 4 != 0) || !memory.IsValidVirtualAddressRange(fp, 16)) { break; } - lr = memory.Read64(fp + 8) - 4; + lr = memory.Read64(fp + 8); fp = memory.Read64(fp); } @@ -455,11 +532,12 @@ std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_64::GetBacktrace(Core::S std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_64::GetBacktraceFromContext( System& system, const ThreadContext64& ctx) { - return GetBacktrace(system, ctx.cpu_registers[29], ctx.cpu_registers[30]); + const auto& reg = ctx.cpu_registers; + return GetBacktrace(system, reg[29], reg[30], ctx.pc); } std::vector<ARM_Interface::BacktraceEntry> ARM_Dynarmic_64::GetBacktrace() const { - return GetBacktrace(system, GetReg(29), GetReg(30)); + return GetBacktrace(system, GetReg(29), GetReg(30), GetPC()); } } // namespace Core |