mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2025-11-16 17:11:18 +01:00
3bc1951820
NOTE: This work is not yet fully complete; kernel is done, but it was taking an exceedingly long time to get through libstratosphere. Thus, I've temporarily added -Wno-error=unused-result for libstratosphere/stratosphere. All warnings should be fixed to do the same thing Nintendo does as relevant, but this is taking a phenomenally long time and is not actually the most important work to do, so it can be put off for some time to prioritize other tasks for 21.0.0 support.
77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern {
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Result KThreadLocalPage::Initialize(KProcess *process) {
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MESOSPHERE_ASSERT_THIS();
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/* Set that this process owns us. */
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m_owner = process;
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/* Allocate a new page. */
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KPageBuffer *page_buf = KPageBuffer::AllocateChecked<PageSize>();
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R_UNLESS(page_buf != nullptr, svc::ResultOutOfMemory());
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ON_RESULT_FAILURE { KPageBuffer::Free(page_buf); };
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/* Map the address in. */
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R_RETURN(m_owner->GetPageTable().MapPages(std::addressof(m_virt_addr), 1, PageSize, page_buf->GetPhysicalAddress(), KMemoryState_ThreadLocal, KMemoryPermission_UserReadWrite));
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}
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void KThreadLocalPage::Finalize() {
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MESOSPHERE_ASSERT_THIS();
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/* Get the physical address of the page. */
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KPhysicalAddress phys_addr = Null<KPhysicalAddress>;
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MESOSPHERE_ABORT_UNLESS(m_owner->GetPageTable().GetPhysicalAddress(std::addressof(phys_addr), this->GetAddress()));
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/* Unmap the page. */
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MESOSPHERE_R_ABORT_UNLESS(m_owner->GetPageTable().UnmapPages(this->GetAddress(), 1, KMemoryState_ThreadLocal));
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/* Free the page. */
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KPageBuffer::FreeChecked<PageSize>(KPageBuffer::FromPhysicalAddress(phys_addr));
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}
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KProcessAddress KThreadLocalPage::Reserve() {
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MESOSPHERE_ASSERT_THIS();
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for (size_t i = 0; i < util::size(m_is_region_free); i++) {
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if (m_is_region_free[i]) {
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m_is_region_free[i] = false;
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return this->GetRegionAddress(i);
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}
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}
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return Null<KProcessAddress>;
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}
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void KThreadLocalPage::Release(KProcessAddress addr) {
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MESOSPHERE_ASSERT_THIS();
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m_is_region_free[this->GetRegionIndex(addr)] = true;
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}
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void *KThreadLocalPage::GetPointer() const {
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MESOSPHERE_ASSERT_THIS();
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KPhysicalAddress phys_addr;
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MESOSPHERE_ABORT_UNLESS(m_owner->GetPageTable().GetPhysicalAddress(std::addressof(phys_addr), this->GetAddress()));
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return static_cast<void *>(KPageBuffer::FromPhysicalAddress(phys_addr));
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}
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}
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