mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-10 22:16:44 +00:00
135 lines
4.3 KiB
C++
135 lines
4.3 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 {
|
|
|
|
constexpr std::array<s32, cpu::NumCores> NegativeArray = [] {
|
|
std::array<s32, cpu::NumCores> arr = {};
|
|
for (size_t i = 0; i < arr.size(); i++) {
|
|
arr[i] = -1;
|
|
}
|
|
return arr;
|
|
}();
|
|
|
|
std::atomic<s32> g_next_ticket = 0;
|
|
std::atomic<s32> g_current_ticket = 0;
|
|
|
|
std::array<s32, cpu::NumCores> g_core_tickets = NegativeArray;
|
|
|
|
s32 GetCoreTicket() {
|
|
const s32 core_id = GetCurrentCoreId();
|
|
if (g_core_tickets[core_id] == -1) {
|
|
g_core_tickets[core_id] = 2 * g_next_ticket.fetch_add(1);
|
|
}
|
|
return g_core_tickets[core_id];
|
|
}
|
|
|
|
void WaitCoreTicket() {
|
|
const s32 expected = GetCoreTicket();
|
|
const s32 desired = expected + 1;
|
|
s32 compare = g_current_ticket;
|
|
do {
|
|
if (compare == desired) {
|
|
break;
|
|
}
|
|
compare = expected;
|
|
} while (!g_current_ticket.compare_exchange_weak(compare, desired));
|
|
}
|
|
|
|
void ReleaseCoreTicket() {
|
|
const s32 expected = GetCoreTicket() + 1;
|
|
const s32 desired = expected + 1;
|
|
s32 compare = g_current_ticket;
|
|
do {
|
|
if (compare != expected) {
|
|
break;
|
|
}
|
|
} while (!g_current_ticket.compare_exchange_weak(compare, desired));
|
|
}
|
|
|
|
[[gnu::unused]] void PrintCurrentState() {
|
|
/* Wait for it to be our turn to print. */
|
|
WaitCoreTicket();
|
|
|
|
const s32 core_id = GetCurrentCoreId();
|
|
MESOSPHERE_RELEASE_LOG("Core[%d] Current State:\n", core_id);
|
|
|
|
/* 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
|
|
|
|
MESOSPHERE_RELEASE_LOG("\n");
|
|
|
|
/* Allow the next core to print. */
|
|
ReleaseCoreTicket();
|
|
}
|
|
|
|
NORETURN void StopSystem() {
|
|
#ifdef MESOSPHERE_BUILD_FOR_DEBUGGING
|
|
/* Print the current core. */
|
|
PrintCurrentState();
|
|
#endif
|
|
|
|
KSystemControl::StopSystem();
|
|
}
|
|
|
|
}
|
|
|
|
NORETURN WEAK_SYMBOL void Panic(const char *file, int line, const char *format, ...) {
|
|
#ifdef MESOSPHERE_BUILD_FOR_DEBUGGING
|
|
/* Wait for it to be our turn to print. */
|
|
WaitCoreTicket();
|
|
|
|
::std::va_list vl;
|
|
va_start(vl, format);
|
|
MESOSPHERE_RELEASE_LOG("Core[%d]: Kernel Panic at %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();
|
|
}
|
|
|
|
}
|