Atmosphere/libraries/libstratosphere/source/os/impl/os_debug_impl.os.horizon.hpp

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/*
* Copyright (c) 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/>.
*/
#pragma once
#include <stratosphere.hpp>
#include "os_thread_manager.hpp"
namespace ams::os::impl {
class DebugHorizonImpl {
public:
static uintptr_t GetCurrentStackPointer() {
uintptr_t v;
__asm__ __volatile__("mov %[v], sp" : [v]"=&r"(v) :: "memory");
return v;
}
static void GetCurrentStackInfo(uintptr_t *out_stack, size_t *out_size) {
/* Check pre-conditions. */
AMS_ASSERT(out_stack != nullptr);
AMS_ASSERT(out_size != nullptr);
/* Get the current thread. */
auto *cur_thread = os::impl::GetCurrentThread();
auto *cur_fiber = cur_thread->current_fiber;
/* Get the current stack pointer. */
uintptr_t cur_sp = GetCurrentStackPointer();
/* Determine current stack extents, TODO Fiber */
uintptr_t stack_top = reinterpret_cast<uintptr_t>(cur_fiber == nullptr ? cur_thread->stack : /* TODO: cur_fiber->stack */ nullptr);
size_t stack_size = reinterpret_cast<size_t>(cur_fiber == nullptr ? cur_thread->stack_size : /* TODO: cur_fiber->stack_size */ 0);
uintptr_t stack_bottom = stack_top + stack_size;
/* TODO: User exception handler, check if stack is out of range and use exception stack. */
/* Check that the stack pointer is in bounds. */
AMS_ABORT_UNLESS((stack_top <= cur_sp) && (cur_sp < stack_bottom));
/* Set the output. */
*out_stack = stack_top;
*out_size = stack_size;
}
static void QueryMemoryInfo(os::MemoryInfo *out) {
AMS_UNUSED(out);
AMS_ABORT("TODO: Horizon QueryMemoryInfo");
}
static Tick GetIdleTickCount() {
u64 value;
R_ABORT_UNLESS(svc::GetInfo(std::addressof(value), svc::InfoType_IdleTickCount, svc::InvalidHandle, static_cast<u64>(-1)));
return os::Tick(value);
}
static Tick GetThreadTickCount() {
u64 value;
R_ABORT_UNLESS(svc::GetInfo(std::addressof(value), svc::InfoType_ThreadTickCount, svc::PseudoHandle::CurrentThread, static_cast<u64>(-1)));
return os::Tick(value);
}
static int GetFreeThreadCount() {
u64 value;
R_ABORT_UNLESS(svc::GetInfo(std::addressof(value), svc::InfoType_FreeThreadCount, svc::PseudoHandle::CurrentProcess, 0));
AMS_ASSERT(value <= static_cast<u64>(std::numeric_limits<int>::max()));
return static_cast<int>(value);
}
};
using DebugImpl = DebugHorizonImpl;
}