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// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <map>
#include <optional>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/demangle.h"
#include "common/logging/log.h"
#include "core/arm/arm_interface.h"
#include "core/arm/symbols.h"
#include "core/core.h"
#include "core/debugger/debugger.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/svc.h"
#include "core/loader/loader.h"
#include "core/memory.h"
#include "core/arm/dynarmic/arm_dynarmic_32.h"
#include "core/arm/dynarmic/arm_dynarmic_64.h"
namespace Core {
constexpr u64 SEGMENT_BASE = 0x7100000000ull;
std::vector<ARM_Interface::BacktraceEntry> ARM_Interface::GetBacktraceFromContext(
Core::System& system, const ARM_Interface::ThreadContext32& ctx) {
return ARM_Dynarmic_32::GetBacktraceFromContext(system, ctx);
}
std::vector<ARM_Interface::BacktraceEntry> ARM_Interface::GetBacktraceFromContext(
Core::System& system, const ARM_Interface::ThreadContext64& ctx) {
return ARM_Dynarmic_64::GetBacktraceFromContext(system, ctx);
}
void ARM_Interface::SymbolicateBacktrace(Core::System& system, std::vector<BacktraceEntry>& out) {
std::map<VAddr, std::string> modules;
auto& loader{system.GetAppLoader()};
if (loader.ReadNSOModules(modules) != Loader::ResultStatus::Success) {
return;
}
std::map<std::string, Symbols::Symbols> symbols;
for (const auto& module : modules) {
symbols.insert_or_assign(module.second,
Symbols::GetSymbols(module.first, system.Memory(),
system.CurrentProcess()->Is64BitProcess()));
}
for (auto& entry : out) {
VAddr base = 0;
for (auto iter = modules.rbegin(); iter != modules.rend(); ++iter) {
const auto& module{*iter};
if (entry.original_address >= module.first) {
entry.module = module.second;
base = module.first;
break;
}
}
entry.offset = entry.original_address - base;
entry.address = SEGMENT_BASE + entry.offset;
if (entry.module.empty()) {
entry.module = "unknown";
}
const auto symbol_set = symbols.find(entry.module);
if (symbol_set != symbols.end()) {
const auto symbol = Symbols::GetSymbolName(symbol_set->second, entry.offset);
if (symbol) {
entry.name = Common::DemangleSymbol(*symbol);
}
}
}
}
void ARM_Interface::LogBacktrace() const {
const VAddr sp = GetSP();
const VAddr pc = GetPC();
LOG_ERROR(Core_ARM, "Backtrace, sp={:016X}, pc={:016X}", sp, pc);
LOG_ERROR(Core_ARM, "{:20}{:20}{:20}{:20}{}", "Module Name", "Address", "Original Address",
"Offset", "Symbol");
LOG_ERROR(Core_ARM, "");
const auto backtrace = GetBacktrace();
for (const auto& entry : backtrace) {
LOG_ERROR(Core_ARM, "{:20}{:016X} {:016X} {:016X} {}", entry.module, entry.address,
entry.original_address, entry.offset, entry.name);
}
}
void ARM_Interface::Run() {
using Kernel::StepState;
using Kernel::SuspendType;
while (true) {
Kernel::KThread* current_thread{Kernel::GetCurrentThreadPointer(system.Kernel())};
Dynarmic::HaltReason hr{};
// Notify the debugger and go to sleep if a step was performed
// and this thread has been scheduled again.
if (current_thread->GetStepState() == StepState::StepPerformed) {
system.GetDebugger().NotifyThreadStopped(current_thread);
current_thread->RequestSuspend(SuspendType::Debug);
break;
}
// Otherwise, run the thread.
system.EnterDynarmicProfile();
if (current_thread->GetStepState() == StepState::StepPending) {
hr = StepJit();
if (Has(hr, step_thread)) {
current_thread->SetStepState(StepState::StepPerformed);
}
} else {
hr = RunJit();
}
system.ExitDynarmicProfile();
// If the thread is scheduled for termination, exit the thread.
if (current_thread->HasDpc()) {
if (current_thread->IsTerminationRequested()) {
current_thread->Exit();
UNREACHABLE();
}
}
// Notify the debugger and go to sleep if a breakpoint was hit,
// or if the thread is unable to continue for any reason.
if (Has(hr, breakpoint) || Has(hr, no_execute)) {
if (!Has(hr, no_execute)) {
RewindBreakpointInstruction();
}
if (system.DebuggerEnabled()) {
system.GetDebugger().NotifyThreadStopped(current_thread);
} else {
LogBacktrace();
}
current_thread->RequestSuspend(SuspendType::Debug);
break;
}
// Notify the debugger and go to sleep if a watchpoint was hit.
if (Has(hr, watchpoint)) {
if (system.DebuggerEnabled()) {
system.GetDebugger().NotifyThreadWatchpoint(current_thread, *HaltedWatchpoint());
}
current_thread->RequestSuspend(SuspendType::Debug);
break;
}
// Handle syscalls and scheduling (this may change the current thread/core)
if (Has(hr, svc_call)) {
Kernel::Svc::Call(system, GetSvcNumber());
break;
}
if (Has(hr, break_loop) || !uses_wall_clock) {
break;
}
}
}
void ARM_Interface::LoadWatchpointArray(const WatchpointArray& wp) {
watchpoints = ℘
}
const Kernel::DebugWatchpoint* ARM_Interface::MatchingWatchpoint(
VAddr addr, u64 size, Kernel::DebugWatchpointType access_type) const {
if (!watchpoints) {
return nullptr;
}
const VAddr start_address{addr};
const VAddr end_address{addr + size};
for (size_t i = 0; i < Core::Hardware::NUM_WATCHPOINTS; i++) {
const auto& watch{(*watchpoints)[i]};
if (end_address <= watch.start_address) {
continue;
}
if (start_address >= watch.end_address) {
continue;
}
if ((access_type & watch.type) == Kernel::DebugWatchpointType::None) {
continue;
}
return &watch;
}
return nullptr;
}
} // namespace Core
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