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author | Lioncash <mathew1800@gmail.com> | 2020-04-24 00:05:09 +0200 |
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committer | Lioncash <mathew1800@gmail.com> | 2020-04-24 00:12:04 +0200 |
commit | 4730347f8e4e158aafb821f69fba0a7cb94fdb2a (patch) | |
tree | e26ef42c5d2b041f9888be8fd0e1db381adee80e | |
parent | Merge pull request #3768 from H27CK/cmd-title-fmt (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/svc.cpp | 140 |
1 files changed, 138 insertions, 2 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index 4134acf65..17c7e9433 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -1229,6 +1229,142 @@ static ResultCode QueryMemory32(Core::System& system, u32 memory_info_address, return QueryMemory(system, memory_info_address, page_info_address, query_address); } +static ResultCode MapProcessCodeMemory(Core::System& system, Handle process_handle, u64 dst_address, + u64 src_address, u64 size) { + LOG_DEBUG(Kernel_SVC, + "called. process_handle=0x{:08X}, dst_address=0x{:016X}, " + "src_address=0x{:016X}, size=0x{:016X}", + process_handle, dst_address, src_address, size); + + if (!Common::Is4KBAligned(src_address)) { + LOG_ERROR(Kernel_SVC, "src_address is not page-aligned (src_address=0x{:016X}).", + src_address); + return ERR_INVALID_ADDRESS; + } + + if (!Common::Is4KBAligned(dst_address)) { + LOG_ERROR(Kernel_SVC, "dst_address is not page-aligned (dst_address=0x{:016X}).", + dst_address); + return ERR_INVALID_ADDRESS; + } + + if (size == 0 || !Common::Is4KBAligned(size)) { + LOG_ERROR(Kernel_SVC, "Size is zero or not page-aligned (size=0x{:016X})", size); + return ERR_INVALID_SIZE; + } + + if (!IsValidAddressRange(dst_address, size)) { + LOG_ERROR(Kernel_SVC, + "Destination address range overflows the address space (dst_address=0x{:016X}, " + "size=0x{:016X}).", + dst_address, size); + return ERR_INVALID_ADDRESS_STATE; + } + + if (!IsValidAddressRange(src_address, size)) { + LOG_ERROR(Kernel_SVC, + "Source address range overflows the address space (src_address=0x{:016X}, " + "size=0x{:016X}).", + src_address, size); + return ERR_INVALID_ADDRESS_STATE; + } + + const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable(); + auto process = handle_table.Get<Process>(process_handle); + if (!process) { + LOG_ERROR(Kernel_SVC, "Invalid process handle specified (handle=0x{:08X}).", + process_handle); + return ERR_INVALID_HANDLE; + } + + auto& page_table = process->PageTable(); + if (!page_table.IsInsideAddressSpace(src_address, size)) { + LOG_ERROR(Kernel_SVC, + "Source address range is not within the address space (src_address=0x{:016X}, " + "size=0x{:016X}).", + src_address, size); + return ERR_INVALID_ADDRESS_STATE; + } + + if (!page_table.IsInsideASLRRegion(dst_address, size)) { + LOG_ERROR(Kernel_SVC, + "Destination address range is not within the ASLR region (dst_address=0x{:016X}, " + "size=0x{:016X}).", + dst_address, size); + return ERR_INVALID_MEMORY_RANGE; + } + + return page_table.MapProcessCodeMemory(dst_address, src_address, size); +} + +static ResultCode UnmapProcessCodeMemory(Core::System& system, Handle process_handle, + u64 dst_address, u64 src_address, u64 size) { + LOG_DEBUG(Kernel_SVC, + "called. process_handle=0x{:08X}, dst_address=0x{:016X}, src_address=0x{:016X}, " + "size=0x{:016X}", + process_handle, dst_address, src_address, size); + + if (!Common::Is4KBAligned(dst_address)) { + LOG_ERROR(Kernel_SVC, "dst_address is not page-aligned (dst_address=0x{:016X}).", + dst_address); + return ERR_INVALID_ADDRESS; + } + + if (!Common::Is4KBAligned(src_address)) { + LOG_ERROR(Kernel_SVC, "src_address is not page-aligned (src_address=0x{:016X}).", + src_address); + return ERR_INVALID_ADDRESS; + } + + if (size == 0 || Common::Is4KBAligned(size)) { + LOG_ERROR(Kernel_SVC, "Size is zero or not page-aligned (size=0x{:016X}).", size); + return ERR_INVALID_SIZE; + } + + if (!IsValidAddressRange(dst_address, size)) { + LOG_ERROR(Kernel_SVC, + "Destination address range overflows the address space (dst_address=0x{:016X}, " + "size=0x{:016X}).", + dst_address, size); + return ERR_INVALID_ADDRESS_STATE; + } + + if (!IsValidAddressRange(src_address, size)) { + LOG_ERROR(Kernel_SVC, + "Source address range overflows the address space (src_address=0x{:016X}, " + "size=0x{:016X}).", + src_address, size); + return ERR_INVALID_ADDRESS_STATE; + } + + const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable(); + auto process = handle_table.Get<Process>(process_handle); + if (!process) { + LOG_ERROR(Kernel_SVC, "Invalid process handle specified (handle=0x{:08X}).", + process_handle); + return ERR_INVALID_HANDLE; + } + + auto& page_table = process->PageTable(); + if (!page_table.IsInsideAddressSpace(src_address, size)) { + LOG_ERROR(Kernel_SVC, + "Source address range is not within the address space (src_address=0x{:016X}, " + "size=0x{:016X}).", + src_address, size); + return ERR_INVALID_ADDRESS_STATE; + } + + if (!page_table.IsInsideASLRRegion(dst_address, size)) { + LOG_ERROR(Kernel_SVC, + "Destination address range is not within the ASLR region (dst_address=0x{:016X}, " + "size=0x{:016X}).", + dst_address, size); + return ERR_INVALID_MEMORY_RANGE; + } + + return page_table.UnmapProcessCodeMemory(dst_address, src_address, size); +} + /// Exits the current process static void ExitProcess(Core::System& system) { auto* current_process = system.Kernel().CurrentProcess(); @@ -2256,8 +2392,8 @@ static const FunctionDef SVC_Table_64[] = { {0x74, nullptr, "MapProcessMemory"}, {0x75, nullptr, "UnmapProcessMemory"}, {0x76, SvcWrap64<QueryProcessMemory>, "QueryProcessMemory"}, - {0x77, nullptr, "MapProcessCodeMemory"}, - {0x78, nullptr, "UnmapProcessCodeMemory"}, + {0x77, SvcWrap64<MapProcessCodeMemory>, "MapProcessCodeMemory"}, + {0x78, SvcWrap64<UnmapProcessCodeMemory>, "UnmapProcessCodeMemory"}, {0x79, nullptr, "CreateProcess"}, {0x7A, nullptr, "StartProcess"}, {0x7B, nullptr, "TerminateProcess"}, |