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kern: add InfoType_IsSvcPermitted

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This commit is contained in:
Michael Scire
2022-03-22 14:29:02 -07:00
parent 262a066c8c
commit 29a53bc572
7 changed files with 73 additions and 0 deletions
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38
libraries/libstratosphere/source/os/impl/os_disable_counter.os.horizon.hpp Normal file
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@@ -0,0 +1,38 @@
/*
* 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>
namespace ams::os::impl {
class CheckBusyMutexPermission {
public:
CheckBusyMutexPermission() {
/* In order to use the disable counter, we must support SynchronizePreemptionState. */
u64 value;
R_ABORT_UNLESS(svc::GetInfo(std::addressof(value), svc::InfoType_IsSvcPermitted, 0, svc::SvcId_SynchronizePreemptionState));
/* Verify that it's supported. */
AMS_ABORT_UNLESS(value != 0);
}
};
ALWAYS_INLINE void CallCheckBusyMutexPermission() {
AMS_FUNCTION_LOCAL_STATIC(CheckBusyMutexPermission, s_check);
AMS_UNUSED(s_check);
}
}

7
libraries/libstratosphere/source/os/impl/os_internal_busy_mutex_impl.os.horizon.hpp
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@@ -15,6 +15,7 @@
*/
#pragma once
#include <stratosphere.hpp>
#include "os_disable_counter.os.horizon.hpp"
namespace ams::os::impl {
@@ -60,6 +61,9 @@ namespace ams::os::impl {
AMS_ASSERT(cur_dc < std::numeric_limits<decltype(cur_dc)>::max());
const auto next_dc = cur_dc + 1;
/* Check that we're allowed to use busy mutexes. */
CallCheckBusyMutexPermission();
/* Get pointer to our value. */
u32 * const p = std::addressof(m_value);
@@ -101,6 +105,9 @@ namespace ams::os::impl {
AMS_ASSERT(cur_dc < std::numeric_limits<decltype(cur_dc)>::max());
const auto next_dc = cur_dc + 1;
/* Check that we're allowed to use busy mutexes. */
CallCheckBusyMutexPermission();
/* Get pointer to our value. */
u32 * const p = std::addressof(m_value);

7
libraries/libstratosphere/source/os/impl/os_internal_rw_busy_mutex_impl.os.horizon.hpp
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@@ -15,6 +15,7 @@
*/
#pragma once
#include <stratosphere.hpp>
#include "os_disable_counter.os.horizon.hpp"
namespace ams::os::impl {
@@ -80,6 +81,9 @@ namespace ams::os::impl {
AMS_ABORT_UNLESS(cur_dc < std::numeric_limits<decltype(cur_dc)>::max());
const auto next_dc = cur_dc + 1;
/* Check that we're allowed to use busy mutexes. */
CallCheckBusyMutexPermission();
/* Get pointer to our value. */
u32 * const p = std::addressof(m_value);
@@ -162,6 +166,9 @@ namespace ams::os::impl {
AMS_ABORT_UNLESS(cur_dc < std::numeric_limits<decltype(cur_dc)>::max());
const auto next_dc = cur_dc + 1;
/* Check that we're allowed to use busy mutexes. */
CallCheckBusyMutexPermission();
/* Get pointer to our value. */
u32 * const p = std::addressof(m_value);