mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-28 15:41:14 +00:00
553 lines
27 KiB
C++
553 lines
27 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours/svc/svc_types_common.hpp>
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#include <vapours/svc/svc_select_thread_local_region.hpp>
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namespace ams::svc::ipc {
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#pragma GCC push_options
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#pragma GCC optimize ("-O2")
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ALWAYS_INLINE u32 *GetMessageBuffer() {
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return GetThreadLocalRegion()->message_buffer;
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}
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constexpr inline size_t MessageBufferSize = sizeof(::ams::svc::ThreadLocalRegion::message_buffer);
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class MessageBuffer {
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public:
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class MessageHeader {
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private:
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/* Define fields for the first header word. */
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using Tag = util::BitPack32::Field<0, BITSIZEOF(u16), u16>;
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using PointerCount = util::BitPack32::Field<Tag::Next, 4, s32>;
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using SendCount = util::BitPack32::Field<PointerCount::Next, 4, s32>;
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using ReceiveCount = util::BitPack32::Field<SendCount::Next, 4, s32>;
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using ExchangeCount = util::BitPack32::Field<ReceiveCount::Next, 4, s32>;
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static_assert(ExchangeCount::Next == BITSIZEOF(u32));
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/* Define fields for the second header word. */
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using RawCount = util::BitPack32::Field<0, 10, s32>;
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using ReceiveListCount = util::BitPack32::Field<RawCount::Next, 4, s32>;
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using Reserved0 = util::BitPack32::Field<ReceiveListCount::Next, 6, u32>;
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using ReceiveListOffset = util::BitPack32::Field<Reserved0::Next, 11, s32>;
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using HasSpecialHeader = util::BitPack32::Field<ReceiveListOffset::Next, 1, bool>;
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static constexpr inline u64 NullTag = 0;
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static_assert(HasSpecialHeader::Next == BITSIZEOF(u32));
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public:
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enum ReceiveListCountType {
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ReceiveListCountType_None = 0,
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ReceiveListCountType_ToMessageBuffer = 1,
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ReceiveListCountType_ToSingleBuffer = 2,
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ReceiveListCountType_CountOffset = 2,
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ReceiveListCountType_CountMax = 13,
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};
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private:
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util::BitPack32 header[2];
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public:
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constexpr ALWAYS_INLINE MessageHeader() : header{util::BitPack32{0}, util::BitPack32{0}} {
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this->header[0].Set<Tag>(NullTag);
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}
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constexpr ALWAYS_INLINE MessageHeader(u16 tag, bool special, s32 ptr, s32 send, s32 recv, s32 exch, s32 raw, s32 recv_list) : header{util::BitPack32{0}, util::BitPack32{0}} {
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this->header[0].Set<Tag>(tag);
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this->header[0].Set<PointerCount>(ptr);
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this->header[0].Set<SendCount>(send);
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this->header[0].Set<ReceiveCount>(recv);
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this->header[0].Set<ExchangeCount>(exch);
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this->header[1].Set<RawCount>(raw);
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this->header[1].Set<ReceiveListCount>(recv_list);
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this->header[1].Set<HasSpecialHeader>(special);
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}
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ALWAYS_INLINE explicit MessageHeader(const MessageBuffer &buf) : header{util::BitPack32{0}, util::BitPack32{0}} {
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buf.Get(0, this->header, util::size(this->header));
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}
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ALWAYS_INLINE explicit MessageHeader(const u32 *msg) : header{util::BitPack32{msg[0]}, util::BitPack32{msg[1]}} { /* ... */ }
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constexpr ALWAYS_INLINE u16 GetTag() const {
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return this->header[0].Get<Tag>();
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}
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constexpr ALWAYS_INLINE s32 GetPointerCount() const {
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return this->header[0].Get<PointerCount>();
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}
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constexpr ALWAYS_INLINE s32 GetSendCount() const {
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return this->header[0].Get<SendCount>();
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}
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constexpr ALWAYS_INLINE s32 GetReceiveCount() const {
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return this->header[0].Get<ReceiveCount>();
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}
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constexpr ALWAYS_INLINE s32 GetExchangeCount() const {
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return this->header[0].Get<ExchangeCount>();
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}
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constexpr ALWAYS_INLINE s32 GetMapAliasCount() const {
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return this->GetSendCount() + this->GetReceiveCount() + this->GetExchangeCount();
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}
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constexpr ALWAYS_INLINE s32 GetRawCount() const {
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return this->header[1].Get<RawCount>();
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}
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constexpr ALWAYS_INLINE s32 GetReceiveListCount() const {
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return this->header[1].Get<ReceiveListCount>();
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}
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constexpr ALWAYS_INLINE s32 GetReceiveListOffset() const {
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return this->header[1].Get<ReceiveListOffset>();
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}
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constexpr ALWAYS_INLINE bool GetHasSpecialHeader() const {
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return this->header[1].Get<HasSpecialHeader>();
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}
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constexpr ALWAYS_INLINE void SetReceiveListCount(s32 recv_list) {
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this->header[1].Set<ReceiveListCount>(recv_list);
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}
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constexpr ALWAYS_INLINE const util::BitPack32 *GetData() const {
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return this->header;
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}
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static constexpr ALWAYS_INLINE size_t GetDataSize() {
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return sizeof(header);
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}
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};
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class SpecialHeader {
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private:
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/* Define fields for the header word. */
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using HasProcessId = util::BitPack32::Field<0, 1, bool>;
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using CopyHandleCount = util::BitPack32::Field<HasProcessId::Next, 4, s32>;
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using MoveHandleCount = util::BitPack32::Field<CopyHandleCount::Next, 4, s32>;
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private:
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util::BitPack32 header;
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bool has_header;
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public:
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constexpr ALWAYS_INLINE explicit SpecialHeader(bool pid, s32 copy, s32 move) : header{0}, has_header(true) {
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this->header.Set<HasProcessId>(pid);
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this->header.Set<CopyHandleCount>(copy);
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this->header.Set<MoveHandleCount>(move);
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}
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ALWAYS_INLINE explicit SpecialHeader(const MessageBuffer &buf, const MessageHeader &hdr) : header{0}, has_header(hdr.GetHasSpecialHeader()) {
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if (this->has_header) {
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buf.Get(MessageHeader::GetDataSize() / sizeof(util::BitPack32), std::addressof(this->header), sizeof(this->header) / sizeof(util::BitPack32));
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}
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}
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constexpr ALWAYS_INLINE bool GetHasProcessId() const {
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return this->header.Get<HasProcessId>();
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}
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constexpr ALWAYS_INLINE s32 GetCopyHandleCount() const {
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return this->header.Get<CopyHandleCount>();
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}
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constexpr ALWAYS_INLINE s32 GetMoveHandleCount() const {
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return this->header.Get<MoveHandleCount>();
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}
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constexpr ALWAYS_INLINE const util::BitPack32 *GetHeader() const {
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return std::addressof(this->header);
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}
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constexpr ALWAYS_INLINE size_t GetHeaderSize() const {
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if (this->has_header) {
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return sizeof(this->header);
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} else {
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return 0;
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}
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}
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constexpr ALWAYS_INLINE size_t GetDataSize() const {
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if (this->has_header) {
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return (this->GetHasProcessId() ? sizeof(u64) : 0) +
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(this->GetCopyHandleCount() * sizeof(Handle)) +
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(this->GetMoveHandleCount() * sizeof(Handle));
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} else {
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return 0;
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}
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}
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};
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class MapAliasDescriptor {
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public:
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enum Attribute {
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Attribute_Ipc = 0,
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Attribute_NonSecureIpc = 1,
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Attribute_NonDeviceIpc = 3,
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};
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private:
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/* Define fields for the first two words. */
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using SizeLow = util::BitPack32::Field<0, BITSIZEOF(u32), u32>;
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using AddressLow = util::BitPack32::Field<0, BITSIZEOF(u32), u32>;
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/* Define fields for the packed descriptor word. */
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using Attributes = util::BitPack32::Field<0, 2, Attribute>;
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using AddressHigh = util::BitPack32::Field<Attributes::Next, 3, u32>;
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using Reserved = util::BitPack32::Field<AddressHigh::Next, 19, u32>;
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using SizeHigh = util::BitPack32::Field<Reserved::Next, 4, u32>;
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using AddressMid = util::BitPack32::Field<SizeHigh::Next, 4, u32>;
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constexpr ALWAYS_INLINE u32 GetAddressMid(u64 address) {
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return static_cast<u32>(address >> AddressLow::Count) & ((1u << AddressMid::Count) - 1);
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}
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constexpr ALWAYS_INLINE u32 GetAddressHigh(u64 address) {
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return static_cast<u32>(address >> (AddressLow::Count + AddressMid::Count));
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}
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private:
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util::BitPack32 data[3];
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public:
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constexpr ALWAYS_INLINE MapAliasDescriptor() : data{util::BitPack32{0}, util::BitPack32{0}, util::BitPack32{0}} { /* ... */ }
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ALWAYS_INLINE MapAliasDescriptor(const void *buffer, size_t _size, Attribute attr = Attribute_Ipc) : data{util::BitPack32{0}, util::BitPack32{0}, util::BitPack32{0}} {
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const u64 address = reinterpret_cast<u64>(buffer);
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const u64 size = static_cast<u64>(_size);
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this->data[0] = { static_cast<u32>(size) };
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this->data[1] = { static_cast<u32>(address) };
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this->data[2].Set<Attributes>(attr);
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this->data[2].Set<AddressMid>(GetAddressMid(address));
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this->data[2].Set<SizeHigh>(static_cast<u32>(size >> SizeLow::Count));
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this->data[2].Set<AddressHigh>(GetAddressHigh(address));
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}
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ALWAYS_INLINE MapAliasDescriptor(const MessageBuffer &buf, s32 index) : data{util::BitPack32{0}, util::BitPack32{0}, util::BitPack32{0}} {
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buf.Get(index, this->data, util::size(this->data));
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}
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constexpr ALWAYS_INLINE uintptr_t GetAddress() const {
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const u64 address = (static_cast<u64>((this->data[2].Get<AddressHigh>() << AddressMid::Count) | this->data[2].Get<AddressMid>()) << AddressLow::Count) | this->data[1].Get<AddressLow>();
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return address;
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}
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constexpr ALWAYS_INLINE uintptr_t GetSize() const {
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const u64 size = (static_cast<u64>(this->data[2].Get<SizeHigh>()) << SizeLow::Count) | this->data[0].Get<SizeLow>();
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return size;
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}
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constexpr ALWAYS_INLINE Attribute GetAttribute() const {
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return this->data[2].Get<Attributes>();
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}
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constexpr ALWAYS_INLINE const util::BitPack32 *GetData() const {
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return this->data;
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}
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static constexpr ALWAYS_INLINE size_t GetDataSize() {
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return sizeof(data);
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}
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};
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class PointerDescriptor {
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private:
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/* Define fields for the packed descriptor word. */
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using Index = util::BitPack32::Field<0, 4, s32>;
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using Reserved0 = util::BitPack32::Field<Index::Next, 2, u32>;
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using AddressHigh = util::BitPack32::Field<Reserved0::Next, 3, u32>;
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using Reserved1 = util::BitPack32::Field<AddressHigh::Next, 3, u32>;
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using AddressMid = util::BitPack32::Field<Reserved1::Next, 4, u32>;
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using Size = util::BitPack32::Field<AddressMid::Next, 16, u32>;
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/* Define fields for the second word. */
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using AddressLow = util::BitPack32::Field<0, BITSIZEOF(u32), u32>;
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constexpr ALWAYS_INLINE u32 GetAddressMid(u64 address) {
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return static_cast<u32>(address >> AddressLow::Count) & ((1u << AddressMid::Count) - 1);
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}
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constexpr ALWAYS_INLINE u32 GetAddressHigh(u64 address) {
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return static_cast<u32>(address >> (AddressLow::Count + AddressMid::Count));
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}
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private:
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util::BitPack32 data[2];
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public:
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constexpr ALWAYS_INLINE PointerDescriptor() : data{util::BitPack32{0}, util::BitPack32{0}} { /* ... */ }
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ALWAYS_INLINE PointerDescriptor(const void *buffer, size_t size, s32 index) : data{util::BitPack32{0}, util::BitPack32{0}} {
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const u64 address = reinterpret_cast<u64>(buffer);
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this->data[0].Set<Index>(index);
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this->data[0].Set<AddressHigh>(GetAddressHigh(address));
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this->data[0].Set<AddressMid>(GetAddressMid(address));
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this->data[0].Set<Size>(size);
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this->data[1] = { static_cast<u32>(address) };
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}
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ALWAYS_INLINE PointerDescriptor(const MessageBuffer &buf, s32 index) : data{util::BitPack32{0}, util::BitPack32{0}} {
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buf.Get(index, this->data, util::size(this->data));
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}
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constexpr ALWAYS_INLINE s32 GetIndex() const {
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return this->data[0].Get<Index>();
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}
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constexpr ALWAYS_INLINE uintptr_t GetAddress() const {
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const u64 address = (static_cast<u64>((this->data[0].Get<AddressHigh>() << AddressMid::Count) | this->data[0].Get<AddressMid>()) << AddressLow::Count) | this->data[1].Get<AddressLow>();
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return address;
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}
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constexpr ALWAYS_INLINE size_t GetSize() const {
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return this->data[0].Get<Size>();
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}
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constexpr ALWAYS_INLINE const util::BitPack32 *GetData() const {
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return this->data;
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}
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static constexpr ALWAYS_INLINE size_t GetDataSize() {
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return sizeof(data);
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}
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};
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class ReceiveListEntry {
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private:
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/* Define fields for the first word. */
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using AddressLow = util::BitPack32::Field<0, BITSIZEOF(u32), u32>;
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/* Define fields for the packed descriptor word. */
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using AddressHigh = util::BitPack32::Field<0, 7, u32>;
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using Reserved = util::BitPack32::Field<AddressHigh::Next, 9, u32>;
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using Size = util::BitPack32::Field<Reserved::Next, 16, u32>;
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constexpr ALWAYS_INLINE u32 GetAddressHigh(u64 address) {
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return static_cast<u32>(address >> (AddressLow::Count));
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}
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private:
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util::BitPack32 data[2];
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public:
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constexpr ALWAYS_INLINE ReceiveListEntry() : data{util::BitPack32{0}, util::BitPack32{0}} { /* ... */ }
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ALWAYS_INLINE ReceiveListEntry(const void *buffer, size_t size) : data{util::BitPack32{0}, util::BitPack32{0}} {
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const u64 address = reinterpret_cast<u64>(buffer);
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this->data[0] = { static_cast<u32>(address) };
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this->data[1].Set<AddressHigh>(GetAddressHigh(address));
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this->data[1].Set<Size>(size);
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}
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ALWAYS_INLINE ReceiveListEntry(u32 a, u32 b) : data{util::BitPack32{a}, util::BitPack32{b}} { /* ... */ }
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constexpr ALWAYS_INLINE uintptr_t GetAddress() const {
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const u64 address = (static_cast<u64>(this->data[1].Get<AddressHigh>()) << AddressLow::Count) | this->data[0].Get<AddressLow>();
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return address;
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}
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constexpr ALWAYS_INLINE size_t GetSize() const {
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return this->data[1].Get<Size>();
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}
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constexpr ALWAYS_INLINE const util::BitPack32 *GetData() const {
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return this->data;
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}
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static constexpr ALWAYS_INLINE size_t GetDataSize() {
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return sizeof(data);
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}
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};
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private:
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u32 *buffer;
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size_t size;
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public:
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constexpr MessageBuffer(u32 *b, size_t sz) : buffer(b), size(sz) { /* ... */ }
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constexpr explicit MessageBuffer(u32 *b) : buffer(b), size(sizeof(::ams::svc::ThreadLocalRegion::message_buffer)) { /* ... */ }
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constexpr ALWAYS_INLINE size_t GetBufferSize() const {
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return this->size;
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}
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ALWAYS_INLINE void Get(s32 index, util::BitPack32 *dst, size_t count) const {
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/* Ensure that this doesn't get re-ordered. */
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__asm__ __volatile__("" ::: "memory");
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/* Get the words. */
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static_assert(sizeof(*dst) == sizeof(*this->buffer));
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wclass-memaccess"
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__builtin_memcpy(dst, this->buffer + index, count * sizeof(*dst));
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#pragma GCC diagnostic pop
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}
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ALWAYS_INLINE s32 Set(s32 index, const util::BitPack32 *src, size_t count) const {
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/* Ensure that this doesn't get re-ordered. */
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__asm__ __volatile__("" ::: "memory");
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/* Set the words. */
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__builtin_memcpy(this->buffer + index, src, count * sizeof(*src));
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/* Ensure that this doesn't get re-ordered. */
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__asm__ __volatile__("" ::: "memory");
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return index + count;
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}
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template<typename T>
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ALWAYS_INLINE const T &GetRaw(s32 index) const {
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return *reinterpret_cast<const T *>(this->buffer + index);
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}
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template<typename T>
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ALWAYS_INLINE s32 SetRaw(s32 index, const T &val) {
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*reinterpret_cast<const T *>(this->buffer + index) = val;
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return index + (util::AlignUp(sizeof(val), sizeof(*this->buffer)) / sizeof(*this->buffer));
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}
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ALWAYS_INLINE void GetRawArray(s32 index, void *dst, size_t len) {
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__builtin_memcpy(dst, this->buffer + index, len);
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}
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ALWAYS_INLINE void SetRawArray(s32 index, const void *src, size_t len) {
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__builtin_memcpy(this->buffer + index, src, len);
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}
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ALWAYS_INLINE void SetNull() const {
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this->Set(MessageHeader());
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}
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ALWAYS_INLINE s32 Set(const MessageHeader &hdr) const {
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__builtin_memcpy(this->buffer, hdr.GetData(), hdr.GetDataSize());
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return hdr.GetDataSize() / sizeof(*this->buffer);
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}
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ALWAYS_INLINE s32 Set(const SpecialHeader &spc) const {
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const s32 index = MessageHeader::GetDataSize() / sizeof(*this->buffer);
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__builtin_memcpy(this->buffer + index, spc.GetHeader(), spc.GetHeaderSize());
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return index + (spc.GetHeaderSize() / sizeof(*this->buffer));
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}
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ALWAYS_INLINE s32 SetHandle(s32 index, const ::ams::svc::Handle &hnd) const {
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static_assert(util::IsAligned(sizeof(hnd), sizeof(*this->buffer)));
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__builtin_memcpy(this->buffer + index, std::addressof(hnd), sizeof(hnd));
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return index + (sizeof(hnd) / sizeof(*this->buffer));
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}
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ALWAYS_INLINE s32 SetProcessId(s32 index, const u64 pid) const {
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static_assert(util::IsAligned(sizeof(pid), sizeof(*this->buffer)));
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__builtin_memcpy(this->buffer + index, std::addressof(pid), sizeof(pid));
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return index + (sizeof(pid) / sizeof(*this->buffer));
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}
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ALWAYS_INLINE s32 Set(s32 index, const MapAliasDescriptor &desc) const {
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__builtin_memcpy(this->buffer + index, desc.GetData(), desc.GetDataSize());
|
|
return index + (desc.GetDataSize() / sizeof(*this->buffer));
|
|
}
|
|
|
|
ALWAYS_INLINE s32 Set(s32 index, const PointerDescriptor &desc) const {
|
|
__builtin_memcpy(this->buffer + index, desc.GetData(), desc.GetDataSize());
|
|
return index + (desc.GetDataSize() / sizeof(*this->buffer));
|
|
}
|
|
|
|
ALWAYS_INLINE s32 Set(s32 index, const ReceiveListEntry &desc) const {
|
|
__builtin_memcpy(this->buffer + index, desc.GetData(), desc.GetDataSize());
|
|
return index + (desc.GetDataSize() / sizeof(*this->buffer));
|
|
}
|
|
|
|
ALWAYS_INLINE s32 Set(s32 index, const u32 val) const {
|
|
static_assert(util::IsAligned(sizeof(val), sizeof(*this->buffer)));
|
|
__builtin_memcpy(this->buffer + index, std::addressof(val), sizeof(val));
|
|
return index + (sizeof(val) / sizeof(*this->buffer));
|
|
}
|
|
|
|
ALWAYS_INLINE Result GetAsyncResult() const {
|
|
MessageHeader hdr(this->buffer);
|
|
MessageHeader null{};
|
|
R_SUCCEED_IF(AMS_UNLIKELY((__builtin_memcmp(hdr.GetData(), null.GetData(), MessageHeader::GetDataSize()) != 0)));
|
|
return this->buffer[MessageHeader::GetDataSize() / sizeof(*this->buffer)];
|
|
}
|
|
|
|
ALWAYS_INLINE void SetAsyncResult(Result res) const {
|
|
const s32 index = this->Set(MessageHeader());
|
|
const auto value = res.GetValue();
|
|
static_assert(util::IsAligned(sizeof(value), sizeof(*this->buffer)));
|
|
__builtin_memcpy(this->buffer + index, std::addressof(value), sizeof(value));
|
|
}
|
|
|
|
ALWAYS_INLINE u64 GetProcessId(s32 index) const {
|
|
u64 pid;
|
|
__builtin_memcpy(std::addressof(pid), this->buffer + index, sizeof(pid));
|
|
return pid;
|
|
}
|
|
|
|
ALWAYS_INLINE ams::svc::Handle GetHandle(s32 index) const {
|
|
static_assert(sizeof(ams::svc::Handle) == sizeof(*this->buffer));
|
|
return ::ams::svc::Handle(this->buffer[index]);
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE s32 GetSpecialDataIndex(const MessageHeader &hdr, const SpecialHeader &spc) {
|
|
AMS_UNUSED(hdr);
|
|
return (MessageHeader::GetDataSize() / sizeof(util::BitPack32)) + (spc.GetHeaderSize() / sizeof(util::BitPack32));
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE s32 GetPointerDescriptorIndex(const MessageHeader &hdr, const SpecialHeader &spc) {
|
|
return GetSpecialDataIndex(hdr, spc) + (spc.GetDataSize() / sizeof(util::BitPack32));
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE s32 GetMapAliasDescriptorIndex(const MessageHeader &hdr, const SpecialHeader &spc) {
|
|
return GetPointerDescriptorIndex(hdr, spc) + (hdr.GetPointerCount() * PointerDescriptor::GetDataSize() / sizeof(util::BitPack32));
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE s32 GetRawDataIndex(const MessageHeader &hdr, const SpecialHeader &spc) {
|
|
return GetMapAliasDescriptorIndex(hdr, spc) + (hdr.GetMapAliasCount() * MapAliasDescriptor::GetDataSize() / sizeof(util::BitPack32));
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE s32 GetReceiveListIndex(const MessageHeader &hdr, const SpecialHeader &spc) {
|
|
if (const s32 recv_list_index = hdr.GetReceiveListOffset()) {
|
|
return recv_list_index;
|
|
} else {
|
|
return GetRawDataIndex(hdr, spc) + hdr.GetRawCount();
|
|
}
|
|
}
|
|
|
|
static constexpr ALWAYS_INLINE size_t GetMessageBufferSize(const MessageHeader &hdr, const SpecialHeader &spc) {
|
|
/* Get the size of the plain message. */
|
|
size_t msg_size = GetReceiveListIndex(hdr, spc) * sizeof(util::BitPack32);
|
|
|
|
/* Add the size of the receive list. */
|
|
const auto count = hdr.GetReceiveListCount();
|
|
switch (count) {
|
|
case MessageHeader::ReceiveListCountType_None:
|
|
break;
|
|
case MessageHeader::ReceiveListCountType_ToMessageBuffer:
|
|
break;
|
|
case MessageHeader::ReceiveListCountType_ToSingleBuffer:
|
|
msg_size += ReceiveListEntry::GetDataSize();
|
|
break;
|
|
default:
|
|
msg_size += (count - MessageHeader::ReceiveListCountType_CountOffset) * ReceiveListEntry::GetDataSize();
|
|
break;
|
|
}
|
|
|
|
return msg_size;
|
|
}
|
|
};
|
|
|
|
#pragma GCC pop_options
|
|
|
|
}
|