Atmosphere/libraries/libmesosphere/source/kern_panic.cpp
2020-02-07 06:26:01 -08:00

88 lines
2.8 KiB
C++

/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mesosphere.hpp>
extern "C" void _start();
namespace ams::result::impl {
NORETURN void OnResultAssertion(Result result) {
MESOSPHERE_PANIC("OnResultAssertion(2%03d-%04d)", result.GetModule(), result.GetDescription());
}
}
namespace ams::kern {
namespace {
size_t g_panic_count = 0;
[[gnu::unused]] void PrintCurrentState() {
if (g_panic_count == 1) {
g_panic_count++;
MESOSPHERE_RELEASE_LOG("Base Address: %p\n", _start);
/* TODO: Dump register state. */
#ifdef ATMOSPHERE_ARCH_ARM64
MESOSPHERE_RELEASE_LOG("Backtrace:\n");
uintptr_t fp = reinterpret_cast<uintptr_t>(__builtin_frame_address(0));
for (size_t i = 0; i < 32 && fp && util::IsAligned(fp, 0x10) && cpu::GetPhysicalAddressWritable(nullptr, fp, true); i++) {
struct {
uintptr_t fp;
uintptr_t lr;
} *stack_frame = reinterpret_cast<decltype(stack_frame)>(fp);
MESOSPHERE_RELEASE_LOG(" [%02zx]: %p\n", i, reinterpret_cast<void *>(stack_frame->lr));
fp = stack_frame->fp;
}
#endif
}
}
NORETURN void StopSystem() {
#ifdef MESOSPHERE_BUILD_FOR_DEBUGGING
PrintCurrentState();
#endif
KSystemControl::StopSystem();
}
}
NORETURN WEAK_SYMBOL void Panic(const char *file, int line, const char *format, ...) {
#ifdef MESOSPHERE_BUILD_FOR_DEBUGGING
if (g_panic_count == 0) {
g_panic_count++;
::std::va_list vl;
va_start(vl, format);
MESOSPHERE_RELEASE_LOG("KernelPanic (Core %d): %s:%d\n", GetCurrentCoreId(), file, line);
MESOSPHERE_RELEASE_VLOG(format, vl);
MESOSPHERE_RELEASE_LOG("\n");
va_end(vl);
}
#endif
StopSystem();
}
NORETURN WEAK_SYMBOL void Panic() {
StopSystem();
}
}