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Merge pull request #3077 from Subv/hle_static_buffer
Kernel/IPC: Implement StaticBuffer translation for HLE services that use the HLERequestContext architecture.
This commit is contained in:
Sebastian Valle
GitHub
commit
555c8ba7c1
@ -40,13 +40,16 @@ static const int kStaticBuffersOffset = 0x100;
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inline u32* GetStaticBuffers(const int offset = 0) {
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return GetCommandBuffer(kStaticBuffersOffset + offset);
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}
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}
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} // namespace Kernel
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namespace IPC {
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/// Size of the command buffer area, in 32-bit words.
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constexpr size_t COMMAND_BUFFER_LENGTH = 0x100 / sizeof(u32);
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// Maximum number of static buffers per thread.
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constexpr size_t MAX_STATIC_BUFFERS = 16;
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// These errors are commonly returned by invalid IPC translations, so alias them here for
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// convenience.
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// TODO(yuriks): These will probably go away once translation is implemented inside the kernel.
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@ -8,6 +8,7 @@
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#include <tuple>
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#include <type_traits>
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#include <utility>
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#include <vector>
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#include "core/hle/ipc.h"
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#include "core/hle/kernel/handle_table.h"
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#include "core/hle/kernel/hle_ipc.h"
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@ -117,7 +118,8 @@ public:
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void PushCurrentPIDHandle();
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void PushStaticBuffer(VAddr buffer_vaddr, size_t size, u8 buffer_id);
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[[deprecated]] void PushStaticBuffer(VAddr buffer_vaddr, size_t size, u8 buffer_id);
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void PushStaticBuffer(const std::vector<u8>& buffer, u8 buffer_id);
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void PushMappedBuffer(VAddr buffer_vaddr, size_t size, MappedBufferPermissions perms);
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};
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@ -195,6 +197,16 @@ inline void RequestBuilder::PushStaticBuffer(VAddr buffer_vaddr, size_t size, u8
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Push(buffer_vaddr);
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}
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inline void RequestBuilder::PushStaticBuffer(const std::vector<u8>& buffer, u8 buffer_id) {
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ASSERT_MSG(buffer_id < MAX_STATIC_BUFFERS, "Invalid static buffer id");
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Push(StaticBufferDesc(buffer.size(), buffer_id));
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// This address will be replaced by the correct static buffer address during IPC translation.
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Push<VAddr>(0xDEADC0DE);
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context->AddStaticBuffer(buffer_id, buffer);
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}
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inline void RequestBuilder::PushMappedBuffer(VAddr buffer_vaddr, size_t size,
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MappedBufferPermissions perms) {
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Push(MappedBufferDesc(size, perms));
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@ -295,17 +307,23 @@ public:
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* @brief Pops the static buffer vaddr
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* @return The virtual address of the buffer
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* @param[out] data_size If non-null, the pointed value will be set to the size of the data
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* @param[out] useStaticBuffersToGetVaddr Indicates if we should read the vaddr from the static
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* buffers (which is the correct thing to do, but no service presently implement it) instead of
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* using the same value as the process who sent the request
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* given by the source process
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*
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* Static buffers must be set up before any IPC request using those is sent.
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* In real services, static buffers must be set up before any IPC request using those is sent.
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* It is the duty of the process (usually services) to allocate and set up the receiving static
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* buffer information
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* buffer information. Our HLE services do not need to set up the buffers beforehand.
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* Please note that the setup uses virtual addresses.
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*/
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VAddr PopStaticBuffer(size_t* data_size = nullptr, bool useStaticBuffersToGetVaddr = false);
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[[deprecated]] VAddr PopStaticBuffer(size_t* data_size);
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/**
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* @brief Pops a static buffer from the IPC request buffer.
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* @return The buffer that was copied from the IPC request originator.
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*
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* In real services, static buffers must be set up before any IPC request using those is sent.
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* It is the duty of the process (usually services) to allocate and set up the receiving static
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* buffer information. Our HLE services do not need to set up the buffers beforehand.
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*/
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const std::vector<u8>& PopStaticBuffer();
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/**
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* @brief Pops the mapped buffer vaddr
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@ -451,21 +469,21 @@ inline std::tuple<Kernel::SharedPtr<T>...> RequestParser::PopObjects() {
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std::index_sequence_for<T...>{});
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}
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inline VAddr RequestParser::PopStaticBuffer(size_t* data_size, bool useStaticBuffersToGetVaddr) {
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inline VAddr RequestParser::PopStaticBuffer(size_t* data_size) {
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const u32 sbuffer_descriptor = Pop<u32>();
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StaticBufferDescInfo bufferInfo{sbuffer_descriptor};
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if (data_size != nullptr)
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*data_size = bufferInfo.size;
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if (!useStaticBuffersToGetVaddr)
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return Pop<VAddr>();
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else {
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ASSERT_MSG(0, "remove the assert if multiprocess/IPC translation are implemented.");
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// The buffer has already been copied to the static buffer by the kernel during
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// translation
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Pop<VAddr>(); // Pop the calling process buffer address
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// and get the vaddr from the static buffers
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return cmdbuf[(0x100 >> 2) + bufferInfo.buffer_id * 2 + 1];
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}
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return Pop<VAddr>();
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}
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inline const std::vector<u8>& RequestParser::PopStaticBuffer() {
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const u32 sbuffer_descriptor = Pop<u32>();
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// Pop the address from the incoming request buffer
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Pop<VAddr>();
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StaticBufferDescInfo buffer_info{sbuffer_descriptor};
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return context->GetStaticBuffer(buffer_info.buffer_id);
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}
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inline VAddr RequestParser::PopMappedBuffer(size_t* data_size,
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@ -2,6 +2,7 @@
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <vector>
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#include <boost/range/algorithm_ext/erase.hpp>
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#include "common/assert.h"
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#include "common/common_types.h"
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@ -44,6 +45,16 @@ void HLERequestContext::ClearIncomingObjects() {
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request_handles.clear();
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}
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const std::vector<u8>& HLERequestContext::GetStaticBuffer(u8 buffer_id) const {
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ASSERT_MSG(!static_buffers[buffer_id].empty(), "Empty static buffer!");
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return static_buffers[buffer_id];
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}
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void HLERequestContext::AddStaticBuffer(u8 buffer_id, std::vector<u8> data) {
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ASSERT(static_buffers[buffer_id].empty() && !data.empty());
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static_buffers[buffer_id] = std::move(data);
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}
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ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const u32_le* src_cmdbuf,
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Process& src_process,
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HandleTable& src_table) {
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@ -84,6 +95,18 @@ ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const u32_le* sr
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cmd_buf[i++] = src_process.process_id;
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break;
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}
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case IPC::DescriptorType::StaticBuffer: {
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VAddr source_address = src_cmdbuf[i];
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IPC::StaticBufferDescInfo buffer_info{descriptor};
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// Copy the input buffer into our own vector and store it.
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std::vector<u8> data(buffer_info.size);
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Memory::ReadBlock(src_process, source_address, data.data(), data.size());
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AddStaticBuffer(buffer_info.buffer_id, std::move(data));
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cmd_buf[i++] = source_address;
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break;
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}
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default:
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UNIMPLEMENTED_MSG("Unsupported handle translation: 0x%08X", descriptor);
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}
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@ -124,6 +147,25 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(u32_le* dst_cmdbuf, P
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}
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break;
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}
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case IPC::DescriptorType::StaticBuffer: {
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IPC::StaticBufferDescInfo buffer_info{descriptor};
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const auto& data = GetStaticBuffer(buffer_info.buffer_id);
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// Grab the address that the target thread set up to receive the response static buffer
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// and write our data there. The static buffers area is located right after the command
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// buffer area.
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size_t static_buffer_offset = IPC::COMMAND_BUFFER_LENGTH + 2 * buffer_info.buffer_id;
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IPC::StaticBufferDescInfo target_descriptor{dst_cmdbuf[static_buffer_offset]};
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VAddr target_address = dst_cmdbuf[static_buffer_offset + 1];
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ASSERT_MSG(target_descriptor.size >= data.size(), "Static buffer data is too big");
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Memory::WriteBlock(dst_process, target_address, data.data(), data.size());
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dst_cmdbuf[i++] = target_address;
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break;
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}
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default:
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UNIMPLEMENTED_MSG("Unsupported handle translation: 0x%08X", descriptor);
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}
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@ -119,6 +119,18 @@ public:
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*/
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void ClearIncomingObjects();
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/**
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* Retrieves the static buffer identified by the input buffer_id. The static buffer *must* have
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* been created in PopulateFromIncomingCommandBuffer by way of an input StaticBuffer descriptor.
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*/
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const std::vector<u8>& GetStaticBuffer(u8 buffer_id) const;
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/**
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* Sets up a static buffer that will be copied to the target process when the request is
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* translated.
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*/
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void AddStaticBuffer(u8 buffer_id, std::vector<u8> data);
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/// Populates this context with data from the requesting process/thread.
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ResultCode PopulateFromIncomingCommandBuffer(const u32_le* src_cmdbuf, Process& src_process,
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HandleTable& src_table);
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@ -131,6 +143,8 @@ private:
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SharedPtr<ServerSession> session;
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// TODO(yuriks): Check common usage of this and optimize size accordingly
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boost::container::small_vector<SharedPtr<Object>, 8> request_handles;
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// The static buffers will be created when the IPC request is translated.
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std::array<std::vector<u8>, IPC::MAX_STATIC_BUFFERS> static_buffers;
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};
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} // namespace Kernel
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@ -2,6 +2,7 @@
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <vector>
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "core/hle/ipc.h"
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@ -19,17 +20,12 @@ namespace AC {
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void Module::Interface::CreateDefaultConfig(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x1, 0, 0);
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std::size_t desc_size;
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VAddr ac_config_addr = rp.PeekStaticBuffer(0, &desc_size);
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ASSERT_MSG(desc_size >= sizeof(Module::ACConfig),
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"Output buffer size can't fit ACConfig structure");
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Memory::WriteBlock(ac_config_addr, &ac->default_config, sizeof(ACConfig));
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std::vector<u8> buffer(sizeof(ACConfig));
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std::memcpy(buffer.data(), &ac->default_config, buffer.size());
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
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rb.Push(RESULT_SUCCESS);
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rb.PushStaticBuffer(ac_config_addr, sizeof(ACConfig), 0);
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rb.PushStaticBuffer(std::move(buffer), 0);
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LOG_WARNING(Service_AC, "(STUBBED) called");
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}
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@ -106,7 +102,7 @@ void Module::Interface::GetWifiStatus(Kernel::HLERequestContext& ctx) {
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void Module::Interface::GetInfraPriority(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x27, 0, 2);
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VAddr ac_config = rp.PopStaticBuffer();
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const std::vector<u8>& ac_config = rp.PopStaticBuffer();
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IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
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rb.Push(RESULT_SUCCESS);
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@ -121,13 +117,13 @@ void Module::Interface::SetRequestEulaVersion(Kernel::HLERequestContext& ctx) {
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u32 major = rp.Pop<u8>();
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u32 minor = rp.Pop<u8>();
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VAddr ac_config = rp.PopStaticBuffer();
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const std::vector<u8>& ac_config = rp.PopStaticBuffer();
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// TODO(Subv): Copy over the input ACConfig to the stored ACConfig.
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
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rb.Push(RESULT_SUCCESS);
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rb.PushStaticBuffer(ac_config, sizeof(ACConfig), 0);
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rb.PushStaticBuffer(std::move(ac_config), 0);
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LOG_WARNING(Service_AC, "(STUBBED) called, major=%u, minor=%u", major, minor);
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}
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@ -720,7 +720,7 @@ void AppletUtility(Service::Interface* self) {
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u32 utility_command = rp.Pop<u32>();
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u32 input_size = rp.Pop<u32>();
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u32 output_size = rp.Pop<u32>();
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VAddr input_addr = rp.PopStaticBuffer();
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VAddr input_addr = rp.PopStaticBuffer(nullptr);
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VAddr output_addr = rp.PeekStaticBuffer(0);
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@ -823,7 +823,7 @@ void StartLibraryApplet(Service::Interface* self) {
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size_t buffer_size = rp.Pop<u32>();
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Kernel::Handle handle = rp.PopHandle();
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VAddr buffer_addr = rp.PopStaticBuffer();
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VAddr buffer_addr = rp.PopStaticBuffer(nullptr);
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LOG_DEBUG(Service_APT, "called applet_id=%08X", static_cast<u32>(applet_id));
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@ -113,7 +113,7 @@ void UnscrambleLocalFriendCode(Service::Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1C, 1, 2);
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const u32 friend_code_count = rp.Pop<u32>();
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size_t in_buffer_size;
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const VAddr scrambled_friend_codes = rp.PopStaticBuffer(&in_buffer_size, false);
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const VAddr scrambled_friend_codes = rp.PopStaticBuffer(&in_buffer_size);
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ASSERT_MSG(in_buffer_size == (friend_code_count * scrambled_friend_code_size),
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"Wrong input buffer size");
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@ -72,7 +72,7 @@ static void OpenFile(Service::Interface* self) {
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FileSys::Mode mode;
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mode.hex = rp.Pop<u32>();
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u32 attributes = rp.Pop<u32>(); // TODO(Link Mauve): do something with those attributes.
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VAddr filename_ptr = rp.PopStaticBuffer();
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VAddr filename_ptr = rp.PopStaticBuffer(nullptr);
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FileSys::Path file_path(filename_type, filename_size, filename_ptr);
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LOG_DEBUG(Service_FS, "path=%s, mode=%u attrs=%u", file_path.DebugStr().c_str(), mode.hex,
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@ -433,7 +433,7 @@ static void FinalizeIrNop(Interface* self) {
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static void SendIrNop(Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x0D, 1, 2);
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const u32 size = rp.Pop<u32>();
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const VAddr address = rp.PopStaticBuffer();
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const VAddr address = rp.PopStaticBuffer(nullptr);
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std::vector<u8> buffer(size);
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Memory::ReadBlock(address, buffer.data(), size);
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@ -771,9 +771,9 @@ static void BeginHostingNetwork(Interface* self) {
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const u32 passphrase_size = rp.Pop<u32>();
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size_t desc_size;
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const VAddr network_info_address = rp.PopStaticBuffer(&desc_size, false);
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const VAddr network_info_address = rp.PopStaticBuffer(&desc_size);
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ASSERT(desc_size == sizeof(NetworkInfo));
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const VAddr passphrase_address = rp.PopStaticBuffer(&desc_size, false);
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const VAddr passphrase_address = rp.PopStaticBuffer(&desc_size);
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ASSERT(desc_size == passphrase_size);
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// TODO(Subv): Store the passphrase and verify it when attempting a connection.
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@ -907,7 +907,7 @@ static void SendTo(Interface* self) {
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u32 flags = rp.Pop<u32>();
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size_t desc_size;
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const VAddr input_address = rp.PopStaticBuffer(&desc_size, false);
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const VAddr input_address = rp.PopStaticBuffer(&desc_size);
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ASSERT(desc_size >= data_size);
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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@ -1093,7 +1093,7 @@ static void SetApplicationData(Interface* self) {
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u32 size = rp.Pop<u32>();
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size_t desc_size;
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const VAddr address = rp.PopStaticBuffer(&desc_size, false);
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const VAddr address = rp.PopStaticBuffer(&desc_size);
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ASSERT(desc_size == size);
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LOG_DEBUG(Service_NWM, "called");
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@ -116,25 +116,58 @@ TEST_CASE("HLERequestContext::PopulateFromIncomingCommandBuffer", "[core][kernel
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REQUIRE(context.CommandBuffer()[2] == process->process_id);
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}
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SECTION("translates StaticBuffer descriptors") {
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auto buffer = std::make_shared<std::vector<u8>>(Memory::PAGE_SIZE);
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std::fill(buffer->begin(), buffer->end(), 0xAB);
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VAddr target_address = 0x10000000;
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auto result = process->vm_manager.MapMemoryBlock(target_address, buffer, 0, buffer->size(),
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MemoryState::Private);
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REQUIRE(result.Code() == RESULT_SUCCESS);
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const u32_le input[]{
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IPC::MakeHeader(0, 0, 2), IPC::StaticBufferDesc(buffer->size(), 0), target_address,
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};
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context.PopulateFromIncomingCommandBuffer(input, *process, handle_table);
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CHECK(context.GetStaticBuffer(0) == *buffer);
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REQUIRE(process->vm_manager.UnmapRange(target_address, buffer->size()) == RESULT_SUCCESS);
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}
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SECTION("translates mixed params") {
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auto buffer = std::make_shared<std::vector<u8>>(Memory::PAGE_SIZE);
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std::fill(buffer->begin(), buffer->end(), 0xCE);
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VAddr target_address = 0x10000000;
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auto result = process->vm_manager.MapMemoryBlock(target_address, buffer, 0, buffer->size(),
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MemoryState::Private);
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REQUIRE(result.Code() == RESULT_SUCCESS);
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auto a = MakeObject();
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const u32_le input[]{
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IPC::MakeHeader(0, 2, 4),
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IPC::MakeHeader(0, 2, 6),
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0x12345678,
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0xABCDEF00,
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IPC::MoveHandleDesc(1),
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handle_table.Create(a).Unwrap(),
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IPC::CallingPidDesc(),
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0,
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IPC::StaticBufferDesc(buffer->size(), 0),
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target_address,
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};
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context.PopulateFromIncomingCommandBuffer(input, *process, handle_table);
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auto* output = context.CommandBuffer();
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REQUIRE(output[1] == 0x12345678);
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REQUIRE(output[2] == 0xABCDEF00);
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REQUIRE(context.GetIncomingHandle(output[4]) == a);
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REQUIRE(output[6] == process->process_id);
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CHECK(output[1] == 0x12345678);
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CHECK(output[2] == 0xABCDEF00);
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CHECK(context.GetIncomingHandle(output[4]) == a);
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CHECK(output[6] == process->process_id);
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CHECK(context.GetStaticBuffer(0) == *buffer);
|
||||
|
||||
REQUIRE(process->vm_manager.UnmapRange(target_address, buffer->size()) == RESULT_SUCCESS);
|
||||
}
|
||||
}
|
||||
|
||||
@ -211,6 +244,37 @@ TEST_CASE("HLERequestContext::WriteToOutgoingCommandBuffer", "[core][kernel]") {
|
||||
REQUIRE(handle_table.GetGeneric(output[3]) == b);
|
||||
REQUIRE(handle_table.GetGeneric(output[5]) == c);
|
||||
}
|
||||
|
||||
SECTION("translates StaticBuffer descriptors") {
|
||||
std::vector<u8> input_buffer(Memory::PAGE_SIZE);
|
||||
std::fill(input_buffer.begin(), input_buffer.end(), 0xAB);
|
||||
|
||||
context.AddStaticBuffer(0, input_buffer);
|
||||
|
||||
auto output_buffer = std::make_shared<std::vector<u8>>(Memory::PAGE_SIZE);
|
||||
VAddr target_address = 0x10000000;
|
||||
auto result = process->vm_manager.MapMemoryBlock(
|
||||
target_address, output_buffer, 0, output_buffer->size(), MemoryState::Private);
|
||||
REQUIRE(result.Code() == RESULT_SUCCESS);
|
||||
|
||||
input[0] = IPC::MakeHeader(0, 0, 2);
|
||||
input[1] = IPC::StaticBufferDesc(input_buffer.size(), 0);
|
||||
input[2] = target_address;
|
||||
|
||||
// An entire command buffer plus enough space for one static buffer descriptor and its
|
||||
// target address
|
||||
std::array<u32_le, IPC::COMMAND_BUFFER_LENGTH + 2> output_cmdbuff;
|
||||
// Set up the output StaticBuffer
|
||||
output_cmdbuff[IPC::COMMAND_BUFFER_LENGTH] =
|
||||
IPC::StaticBufferDesc(output_buffer->size(), 0);
|
||||
output_cmdbuff[IPC::COMMAND_BUFFER_LENGTH + 1] = target_address;
|
||||
|
||||
context.WriteToOutgoingCommandBuffer(output_cmdbuff.data(), *process, handle_table);
|
||||
|
||||
CHECK(*output_buffer == input_buffer);
|
||||
REQUIRE(process->vm_manager.UnmapRange(target_address, output_buffer->size()) ==
|
||||
RESULT_SUCCESS);
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace Kernel
|
||||
|
||||
Loading…
Reference in New Issue
Block a user