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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/core.h"
#include "core/debugger/debugger.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/svc.h"
#include "core/hle/kernel/svc_types.h"
#include "core/memory.h"
#include "core/reporter.h"
namespace Kernel::Svc {
/// Break program execution
void Break(Core::System& system, u32 reason, u64 info1, u64 info2) {
BreakReason break_reason =
static_cast<BreakReason>(reason & ~static_cast<u32>(BreakReason::NotificationOnlyFlag));
bool notification_only = (reason & static_cast<u32>(BreakReason::NotificationOnlyFlag)) != 0;
bool has_dumped_buffer{};
std::vector<u8> debug_buffer;
const auto handle_debug_buffer = [&](VAddr addr, u64 sz) {
if (sz == 0 || addr == 0 || has_dumped_buffer) {
return;
}
auto& memory = system.Memory();
// This typically is an error code so we're going to assume this is the case
if (sz == sizeof(u32)) {
LOG_CRITICAL(Debug_Emulated, "debug_buffer_err_code={:X}", memory.Read32(addr));
} else {
// We don't know what's in here so we'll hexdump it
debug_buffer.resize(sz);
memory.ReadBlock(addr, debug_buffer.data(), sz);
std::string hexdump;
for (std::size_t i = 0; i < debug_buffer.size(); i++) {
hexdump += fmt::format("{:02X} ", debug_buffer[i]);
if (i != 0 && i % 16 == 0) {
hexdump += '\n';
}
}
LOG_CRITICAL(Debug_Emulated, "debug_buffer=\n{}", hexdump);
}
has_dumped_buffer = true;
};
switch (break_reason) {
case BreakReason::Panic:
LOG_CRITICAL(Debug_Emulated, "Userspace PANIC! info1=0x{:016X}, info2=0x{:016X}", info1,
info2);
handle_debug_buffer(info1, info2);
break;
case BreakReason::Assert:
LOG_CRITICAL(Debug_Emulated, "Userspace Assertion failed! info1=0x{:016X}, info2=0x{:016X}",
info1, info2);
handle_debug_buffer(info1, info2);
break;
case BreakReason::User:
LOG_WARNING(Debug_Emulated, "Userspace Break! 0x{:016X} with size 0x{:016X}", info1, info2);
handle_debug_buffer(info1, info2);
break;
case BreakReason::PreLoadDll:
LOG_INFO(Debug_Emulated,
"Userspace Attempting to load an NRO at 0x{:016X} with size 0x{:016X}", info1,
info2);
break;
case BreakReason::PostLoadDll:
LOG_INFO(Debug_Emulated, "Userspace Loaded an NRO at 0x{:016X} with size 0x{:016X}", info1,
info2);
break;
case BreakReason::PreUnloadDll:
LOG_INFO(Debug_Emulated,
"Userspace Attempting to unload an NRO at 0x{:016X} with size 0x{:016X}", info1,
info2);
break;
case BreakReason::PostUnloadDll:
LOG_INFO(Debug_Emulated, "Userspace Unloaded an NRO at 0x{:016X} with size 0x{:016X}",
info1, info2);
break;
case BreakReason::CppException:
LOG_CRITICAL(Debug_Emulated, "Signalling debugger. Uncaught C++ exception encountered.");
break;
default:
LOG_WARNING(
Debug_Emulated,
"Signalling debugger, Unknown break reason {:#X}, info1=0x{:016X}, info2=0x{:016X}",
reason, info1, info2);
handle_debug_buffer(info1, info2);
break;
}
system.GetReporter().SaveSvcBreakReport(reason, notification_only, info1, info2,
has_dumped_buffer ? std::make_optional(debug_buffer)
: std::nullopt);
if (!notification_only) {
LOG_CRITICAL(
Debug_Emulated,
"Emulated program broke execution! reason=0x{:016X}, info1=0x{:016X}, info2=0x{:016X}",
reason, info1, info2);
handle_debug_buffer(info1, info2);
auto* const current_thread = GetCurrentThreadPointer(system.Kernel());
const auto thread_processor_id = current_thread->GetActiveCore();
system.ArmInterface(static_cast<std::size_t>(thread_processor_id)).LogBacktrace();
}
if (system.DebuggerEnabled()) {
auto* thread = system.Kernel().GetCurrentEmuThread();
system.GetDebugger().NotifyThreadStopped(thread);
thread->RequestSuspend(Kernel::SuspendType::Debug);
}
}
void Break32(Core::System& system, u32 reason, u32 info1, u32 info2) {
Break(system, reason, info1, info2);
}
} // namespace Kernel::Svc
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