From 651f6598ac8a980700c330f382d711f7429571a8 Mon Sep 17 00:00:00 2001 From: Liam Date: Sat, 12 Nov 2022 11:02:07 -0500 Subject: kernel: implement FlushProcessDataCache --- src/core/hle/kernel/svc.cpp | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) (limited to 'src/core/hle/kernel/svc.cpp') diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index 9962ad171..e520cab47 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -2701,14 +2701,24 @@ static Result GetThreadList(Core::System& system, u32* out_num_threads, VAddr ou return ResultSuccess; } -static Result FlushProcessDataCache32([[maybe_unused]] Core::System& system, - [[maybe_unused]] Handle handle, [[maybe_unused]] u32 address, - [[maybe_unused]] u32 size) { - // Note(Blinkhawk): For emulation purposes of the data cache this is mostly a no-op, - // as all emulation is done in the same cache level in host architecture, thus data cache - // does not need flushing. - LOG_DEBUG(Kernel_SVC, "called"); - return ResultSuccess; +static Result FlushProcessDataCache32(Core::System& system, Handle process_handle, u64 address, + u64 size) { + // Validate address/size. + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS(address == static_cast(address), ResultInvalidCurrentMemory); + R_UNLESS(size == static_cast(size), ResultInvalidCurrentMemory); + + // Get the process from its handle. + KScopedAutoObject process = + system.Kernel().CurrentProcess()->GetHandleTable().GetObject(process_handle); + R_UNLESS(process.IsNotNull(), ResultInvalidHandle); + + // Verify the region is within range. + auto& page_table = process->PageTable(); + R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory); + + // Perform the operation. + R_RETURN(system.Memory().FlushDataCache(*process, address, size)); } namespace { -- cgit v1.2.3