From e797a917a927ee5f5a2400cf9e3742c8bc3ec800 Mon Sep 17 00:00:00 2001 From: Liam Date: Wed, 4 Oct 2023 22:15:10 -0400 Subject: kernel: implement transfer memory --- src/core/hle/kernel/svc/svc_transfer_memory.cpp | 54 ++++++++++++++++++++++--- 1 file changed, 49 insertions(+), 5 deletions(-) (limited to 'src/core/hle/kernel/svc') diff --git a/src/core/hle/kernel/svc/svc_transfer_memory.cpp b/src/core/hle/kernel/svc/svc_transfer_memory.cpp index 7d94e7f09..1f97121b3 100644 --- a/src/core/hle/kernel/svc/svc_transfer_memory.cpp +++ b/src/core/hle/kernel/svc/svc_transfer_memory.cpp @@ -71,15 +71,59 @@ Result CreateTransferMemory(Core::System& system, Handle* out, u64 address, u64 } Result MapTransferMemory(Core::System& system, Handle trmem_handle, uint64_t address, uint64_t size, - MemoryPermission owner_perm) { - UNIMPLEMENTED(); - R_THROW(ResultNotImplemented); + MemoryPermission map_perm) { + // Validate the address/size. + R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((address < address + size), ResultInvalidCurrentMemory); + + // Validate the permission. + R_UNLESS(IsValidTransferMemoryPermission(map_perm), ResultInvalidState); + + // Get the transfer memory. + KScopedAutoObject trmem = GetCurrentProcess(system.Kernel()) + .GetHandleTable() + .GetObject(trmem_handle); + R_UNLESS(trmem.IsNotNull(), ResultInvalidHandle); + + // Verify that the mapping is in range. + R_UNLESS(GetCurrentProcess(system.Kernel()) + .GetPageTable() + .CanContain(address, size, KMemoryState::Transfered), + ResultInvalidMemoryRegion); + + // Map the transfer memory. + R_TRY(trmem->Map(address, size, map_perm)); + + // We succeeded. + R_SUCCEED(); } Result UnmapTransferMemory(Core::System& system, Handle trmem_handle, uint64_t address, uint64_t size) { - UNIMPLEMENTED(); - R_THROW(ResultNotImplemented); + // Validate the address/size. + R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((address < address + size), ResultInvalidCurrentMemory); + + // Get the transfer memory. + KScopedAutoObject trmem = GetCurrentProcess(system.Kernel()) + .GetHandleTable() + .GetObject(trmem_handle); + R_UNLESS(trmem.IsNotNull(), ResultInvalidHandle); + + // Verify that the mapping is in range. + R_UNLESS(GetCurrentProcess(system.Kernel()) + .GetPageTable() + .CanContain(address, size, KMemoryState::Transfered), + ResultInvalidMemoryRegion); + + // Unmap the transfer memory. + R_TRY(trmem->Unmap(address, size)); + + R_SUCCEED(); } Result MapTransferMemory64(Core::System& system, Handle trmem_handle, uint64_t address, -- cgit v1.2.3