diff options
Diffstat (limited to 'src/core/hle/kernel/k_code_memory.cpp')
-rw-r--r-- | src/core/hle/kernel/k_code_memory.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/core/hle/kernel/k_code_memory.cpp b/src/core/hle/kernel/k_code_memory.cpp new file mode 100644 index 000000000..926d1c076 --- /dev/null +++ b/src/core/hle/kernel/k_code_memory.cpp @@ -0,0 +1,159 @@ +#include "core/core.h" +#include "core/core_timing.h" +#include "core/hle/kernel/k_client_port.h" +#include "core/hle/kernel/k_client_session.h" +#include "core/hle/kernel/k_code_memory.h" +#include "core/hle/kernel/k_event.h" +#include "core/hle/kernel/k_handle_table.h" +#include "core/hle/kernel/k_memory_block.h" +#include "core/hle/kernel/k_memory_layout.h" +#include "core/hle/kernel/k_page_table.h" +#include "core/hle/kernel/k_process.h" +#include "core/hle/kernel/k_readable_event.h" +#include "core/hle/kernel/k_resource_limit.h" +#include "core/hle/kernel/k_scheduler.h" +#include "core/hle/kernel/k_scoped_resource_reservation.h" +#include "core/hle/kernel/k_shared_memory.h" +#include "core/hle/kernel/k_synchronization_object.h" +#include "core/hle/kernel/k_thread.h" +#include "core/hle/kernel/k_transfer_memory.h" +#include "core/hle/kernel/k_writable_event.h" +#include "core/hle/kernel/kernel.h" +#include "core/hle/kernel/physical_core.h" +#include "core/hle/kernel/svc.h" +#include "core/hle/kernel/svc_results.h" +#include "core/hle/kernel/svc_types.h" +#include "core/hle/kernel/svc_wrap.h" +#include "core/hle/lock.h" +#include "core/hle/result.h" +#include "core/memory.h" +#include "core/reporter.h" +namespace Kernel { + +KCodeMemory::KCodeMemory(KernelCore& kernel_) + : KAutoObjectWithSlabHeapAndContainer{kernel_}, m_lock(kernel_) {} + +ResultCode KCodeMemory::Initialize(Core::DeviceMemory& device_memory, VAddr addr, size_t size) { + // Set members. + m_owner = kernel.CurrentProcess(); + + // Get the owner page table. + auto& page_table = m_owner->PageTable(); + + // Construct the page group. + KMemoryInfo kBlockInfo = page_table.QueryInfo(addr); + m_page_group = KPageLinkedList(kBlockInfo.GetAddress(), kBlockInfo.GetNumPages()); + + // Lock the memory. + R_TRY(page_table.LockForCodeMemory(addr, size)) + + // Clear the memory. + for (const auto& block : m_page_group.Nodes()) { + std::memset(device_memory.GetPointer(block.GetAddress()), 0xFF, block.GetSize()); + } + + // Set remaining tracking members. + m_address = addr; + m_is_initialized = true; + m_is_owner_mapped = false; + m_is_mapped = false; + + // We succeeded. + return ResultSuccess; +} + +void KCodeMemory::Finalize() { + // Unlock. + if (!m_is_mapped && !m_is_owner_mapped) { + const size_t size = m_page_group.GetNumPages() * PageSize; + m_owner->PageTable().UnlockForCodeMemory(m_address, size); + } +} + +ResultCode KCodeMemory::Map(VAddr address, size_t size) { + // Validate the size. + R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize); + + // Lock ourselves. + KScopedLightLock lk(m_lock); + + // Ensure we're not already mapped. + R_UNLESS(!m_is_mapped, ResultInvalidState); + + // Map the memory. + R_TRY(kernel.CurrentProcess()->PageTable().MapPages( + address, m_page_group, KMemoryState::CodeOut, KMemoryPermission::UserReadWrite)); + + // Mark ourselves as mapped. + m_is_mapped = true; + + return ResultSuccess; +} + +ResultCode KCodeMemory::Unmap(VAddr address, size_t size) { + // Validate the size. + R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize); + + // Lock ourselves. + KScopedLightLock lk(m_lock); + + // Unmap the memory. + R_TRY(kernel.CurrentProcess()->PageTable().UnmapPages(address, m_page_group, + KMemoryState::CodeOut)); + + // Mark ourselves as unmapped. + m_is_mapped = false; + + return ResultSuccess; +} + +ResultCode KCodeMemory::MapToOwner(VAddr address, size_t size, Svc::MemoryPermission perm) { + // Validate the size. + R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize); + + // Lock ourselves. + KScopedLightLock lk(m_lock); + + // Ensure we're not already mapped. + R_UNLESS(!m_is_owner_mapped, ResultInvalidState); + + // Convert the memory permission. + KMemoryPermission k_perm{}; + switch (perm) { + case Svc::MemoryPermission::Read: + k_perm = KMemoryPermission::UserRead; + break; + case Svc::MemoryPermission::ReadExecute: + k_perm = KMemoryPermission::UserReadExecute; + break; + default: + break; + } + + // Map the memory. + R_TRY( + m_owner->PageTable().MapPages(address, m_page_group, KMemoryState::GeneratedCode, k_perm)); + + // Mark ourselves as mapped. + m_is_owner_mapped = true; + + return ResultSuccess; +} + +ResultCode KCodeMemory::UnmapFromOwner(VAddr address, size_t size) { + // Validate the size. + R_UNLESS(m_page_group.GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize); + + // Lock ourselves. + KScopedLightLock lk(m_lock); + + // Unmap the memory. + R_TRY(m_owner->PageTable().UnmapPages(address, m_page_group, KMemoryState::GeneratedCode)); + + // Mark ourselves as unmapped. + m_is_owner_mapped = false; + + return ResultSuccess; +} + +} // namespace Kernel
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