Function handle_access_violation

rpcs3/util/Thread.cpp:1220–1724

}

bool handle_access_violation(u32 addr, bool is_writing, ucontext_t* context) noexcept
{
	g_tls_fault_all++;

	const auto cpu = get_current_cpu_thread();

	struct spu_unsavable
	{
		spu_thread* _spu;

		spu_unsavable(cpu_thread* cpu) noexcept
			: _spu(cpu ? cpu->try_get<spu_thread>() : nullptr)
		{
			if (_spu)
			{
				if (_spu->unsavable)
				{
					_spu = nullptr;
				}
				else
				{
					// Must not be saved inside access violation handler because it is unpredictable
					_spu->unsavable = true;
				}
			}
		}

		~spu_unsavable() noexcept
		{
			if (_spu)
			{
				_spu->unsavable = false;
			}
		}
	} spu_protection{cpu};

	if (addr < RAW_SPU_BASE_ADDR && vm::check_addr(addr) && rsx::g_access_violation_handler)
	{
		bool state_changed = false;

		if (cpu)
		{
			state_changed = vm::temporary_unlock(*cpu);
		}

		bool handled = rsx::g_access_violation_handler(addr, is_writing);

		if (state_changed && (cpu->state += cpu_flag::temp, cpu->test_stopped()))
		{
			//
		}

		if (handled)
		{
			g_tls_fault_rsx++;
			return true;
		}
	}