Panda3DS/src/core/kernel/error.cpp

#include "kernel.hpp"

namespace Commands {
	enum : u32 {
		Throw = 0x00010800
	};
}

namespace FatalErrorType {
	enum : u32 {
		Generic = 0,
		Corrupted = 1,
		CardRemoved = 2,
		Exception = 3,
		ResultFailure = 4,
		Logged = 5
	};
}

// Handle SendSyncRequest targetting the err:f port
void Kernel::handleErrorSyncRequest(u32 messagePointer) {
	u32 cmd = mem.read32(messagePointer);
	switch (cmd) {
		case Commands::Throw: throwError(messagePointer); break;

		default:
			Helpers::panic("Unimplemented err:f command %08X\n", cmd);
			break;
	}
}

void Kernel::throwError(u32 messagePointer) {
	const auto type = mem.read8(messagePointer + 4); // Fatal error type
	const u32 pc = mem.read32(messagePointer + 12);
	const u32 pid = mem.read32(messagePointer + 16);
	logError("Thrown fatal error @ %08X (pid = %X, type = %d)\n", pc, pid, type);

	// Read the error message if type == 4
	if (type == FatalErrorType::ResultFailure) {
		const auto error = mem.readString(messagePointer + 0x24, 0x60);
		logError("ERROR: %s\n", error.c_str());
	}

	Helpers::panic("Thrown fatal error");
}