From f17aaeccf915f4d2eef58354da5b16700263dba4 Mon Sep 17 00:00:00 2001 From: Liam Date: Tue, 12 Apr 2022 17:26:27 -0400 Subject: service: jit: Implement the JIT service --- src/core/CMakeLists.txt | 2 + src/core/hle/kernel/k_code_memory.cpp | 11 +- src/core/hle/service/jit/jit.cpp | 291 ++++++++++++++++++++- src/core/hle/service/jit/jit_context.cpp | 424 +++++++++++++++++++++++++++++++ src/core/hle/service/jit/jit_context.h | 65 +++++ 5 files changed, 784 insertions(+), 9 deletions(-) create mode 100644 src/core/hle/service/jit/jit_context.cpp create mode 100644 src/core/hle/service/jit/jit_context.h diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt index ffbda7925..b681d21a7 100644 --- a/src/core/CMakeLists.txt +++ b/src/core/CMakeLists.txt @@ -460,6 +460,8 @@ add_library(core STATIC hle/service/hid/controllers/touchscreen.h hle/service/hid/controllers/xpad.cpp hle/service/hid/controllers/xpad.h + hle/service/jit/jit_context.cpp + hle/service/jit/jit_context.h hle/service/jit/jit.cpp hle/service/jit/jit.h hle/service/lbl/lbl.cpp diff --git a/src/core/hle/kernel/k_code_memory.cpp b/src/core/hle/kernel/k_code_memory.cpp index 63bbe02e9..09eaf004c 100644 --- a/src/core/hle/kernel/k_code_memory.cpp +++ b/src/core/hle/kernel/k_code_memory.cpp @@ -35,9 +35,14 @@ ResultCode KCodeMemory::Initialize(Core::DeviceMemory& device_memory, VAddr addr R_TRY(page_table.LockForCodeMemory(addr, size)) // Clear the memory. - for (const auto& block : m_page_group.Nodes()) { - std::memset(device_memory.GetPointer(block.GetAddress()), 0xFF, block.GetSize()); - } + // + // FIXME: this ends up clobbering address ranges outside the scope of the mapping within + // guest memory, and is not specifically required if the guest program is correctly + // written, so disable until this is further investigated. + // + // for (const auto& block : m_page_group.Nodes()) { + // std::memset(device_memory.GetPointer(block.GetAddress()), 0xFF, block.GetSize()); + // } // Set remaining tracking members. m_address = addr; diff --git a/src/core/hle/service/jit/jit.cpp b/src/core/hle/service/jit/jit.cpp index c8ebd2e3f..0f9e33ef6 100644 --- a/src/core/hle/service/jit/jit.cpp +++ b/src/core/hle/service/jit/jit.cpp @@ -2,27 +2,256 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include "core/arm/symbols.h" +#include "core/core.h" #include "core/hle/ipc_helpers.h" +#include "core/hle/kernel/k_code_memory.h" +#include "core/hle/kernel/k_transfer_memory.h" #include "core/hle/result.h" #include "core/hle/service/jit/jit.h" +#include "core/hle/service/jit/jit_context.h" #include "core/hle/service/service.h" +#include "core/memory.h" namespace Service::JIT { +struct CodeRange { + u64 offset; + u64 size; +}; + class IJitEnvironment final : public ServiceFramework { public: - explicit IJitEnvironment(Core::System& system_) : ServiceFramework{system_, "IJitEnvironment"} { + explicit IJitEnvironment(Core::System& system_, CodeRange user_rx, CodeRange user_ro) + : ServiceFramework{system_, "IJitEnvironment", ServiceThreadType::CreateNew}, + context{system_.Memory()} { // clang-format off static const FunctionInfo functions[] = { - {0, nullptr, "GenerateCode"}, - {1, nullptr, "Control"}, - {1000, nullptr, "LoadPlugin"}, - {1001, nullptr, "GetCodeAddress"}, + {0, &IJitEnvironment::GenerateCode, "GenerateCode"}, + {1, &IJitEnvironment::Control, "Control"}, + {1000, &IJitEnvironment::LoadPlugin, "LoadPlugin"}, + {1001, &IJitEnvironment::GetCodeAddress, "GetCodeAddress"}, }; // clang-format on RegisterHandlers(functions); + + // Identity map user code range into sysmodule context + configuration.user_ro_memory = user_ro; + configuration.user_rx_memory = user_rx; + configuration.sys_ro_memory = user_ro; + configuration.sys_rx_memory = user_rx; } + + void GenerateCode(Kernel::HLERequestContext& ctx) { + struct Parameters { + u32 data_size; + u64 command; + CodeRange cr1; + CodeRange cr2; + Struct32 data; + }; + + IPC::RequestParser rp{ctx}; + const auto parameters{rp.PopRaw()}; + std::vector input_buffer{ctx.CanReadBuffer() ? ctx.ReadBuffer() : std::vector()}; + std::vector output_buffer(ctx.CanWriteBuffer() ? ctx.GetWriteBufferSize() : 0); + + const VAddr return_ptr{context.AddHeap(0u)}; + const VAddr cr1_in_ptr{context.AddHeap(parameters.cr1)}; + const VAddr cr2_in_ptr{context.AddHeap(parameters.cr2)}; + const VAddr cr1_out_ptr{ + context.AddHeap(CodeRange{.offset = parameters.cr1.offset, .size = 0})}; + const VAddr cr2_out_ptr{ + context.AddHeap(CodeRange{.offset = parameters.cr2.offset, .size = 0})}; + const VAddr input_ptr{context.AddHeap(input_buffer.data(), input_buffer.size())}; + const VAddr output_ptr{context.AddHeap(output_buffer.data(), output_buffer.size())}; + const VAddr data_ptr{context.AddHeap(parameters.data)}; + const VAddr configuration_ptr{context.AddHeap(configuration)}; + + context.CallFunction(callbacks.GenerateCode, return_ptr, cr1_out_ptr, cr2_out_ptr, + configuration_ptr, parameters.command, input_ptr, input_buffer.size(), + cr1_in_ptr, cr2_in_ptr, data_ptr, parameters.data_size, output_ptr, + output_buffer.size()); + + const s32 return_value{context.GetHeap(return_ptr)}; + + if (return_value == 0) { + system.InvalidateCpuInstructionCacheRange(configuration.user_rx_memory.offset, + configuration.user_rx_memory.size); + + if (ctx.CanWriteBuffer()) { + context.GetHeap(output_ptr, output_buffer.data(), output_buffer.size()); + ctx.WriteBuffer(output_buffer.data(), output_buffer.size()); + } + const auto cr1_out{context.GetHeap(cr1_out_ptr)}; + const auto cr2_out{context.GetHeap(cr2_out_ptr)}; + + IPC::ResponseBuilder rb{ctx, 8}; + rb.Push(ResultSuccess); + rb.Push(return_value); + rb.PushRaw(cr1_out); + rb.PushRaw(cr2_out); + } else { + LOG_WARNING(Service_JIT, "plugin GenerateCode callback failed"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + } + }; + + void Control(Kernel::HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const auto command{rp.PopRaw()}; + const auto input_buffer{ctx.ReadBuffer()}; + std::vector output_buffer(ctx.CanWriteBuffer() ? ctx.GetWriteBufferSize() : 0); + + const VAddr return_ptr{context.AddHeap(0u)}; + const VAddr configuration_ptr{context.AddHeap(configuration)}; + const VAddr input_ptr{context.AddHeap(input_buffer.data(), input_buffer.size())}; + const VAddr output_ptr{context.AddHeap(output_buffer.data(), output_buffer.size())}; + const u64 wrapper_value{ + context.CallFunction(callbacks.Control, return_ptr, configuration_ptr, command, + input_ptr, input_buffer.size(), output_ptr, output_buffer.size())}; + const s32 return_value{context.GetHeap(return_ptr)}; + + if (wrapper_value == 0 && return_value == 0) { + if (ctx.CanWriteBuffer()) { + context.GetHeap(output_ptr, output_buffer.data(), output_buffer.size()); + ctx.WriteBuffer(output_buffer.data(), output_buffer.size()); + } + IPC::ResponseBuilder rb{ctx, 3}; + rb.Push(ResultSuccess); + rb.Push(return_value); + } else { + LOG_WARNING(Service_JIT, "plugin Control callback failed"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + } + } + + void LoadPlugin(Kernel::HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const auto tmem_size{rp.PopRaw()}; + if (tmem_size == 0) { + LOG_ERROR(Service_JIT, "attempted to load plugin with empty transfer memory"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + return; + } + + const auto tmem_handle{ctx.GetCopyHandle(0)}; + auto tmem{system.CurrentProcess()->GetHandleTable().GetObject( + tmem_handle)}; + if (tmem.IsNull()) { + LOG_ERROR(Service_JIT, "attempted to load plugin with invalid transfer memory handle"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + return; + } + + configuration.work_memory.offset = tmem->GetSourceAddress(); + configuration.work_memory.size = tmem_size; + + const auto nro_plugin{ctx.ReadBuffer(1)}; + auto symbols{Core::Symbols::GetSymbols(nro_plugin, true)}; + const auto GetSymbol{[&](std::string name) { return symbols[name].first; }}; + + callbacks = + GuestCallbacks{.rtld_fini = GetSymbol("_fini"), + .rtld_init = GetSymbol("_init"), + .Control = GetSymbol("nnjitpluginControl"), + .ResolveBasicSymbols = GetSymbol("nnjitpluginResolveBasicSymbols"), + .SetupDiagnostics = GetSymbol("nnjitpluginSetupDiagnostics"), + .Configure = GetSymbol("nnjitpluginConfigure"), + .GenerateCode = GetSymbol("nnjitpluginGenerateCode"), + .GetVersion = GetSymbol("nnjitpluginGetVersion"), + .Keeper = GetSymbol("nnjitpluginKeeper"), + .OnPrepared = GetSymbol("nnjitpluginOnPrepared")}; + + if (callbacks.GetVersion == 0 || callbacks.Configure == 0 || callbacks.GenerateCode == 0 || + callbacks.OnPrepared == 0) { + LOG_ERROR(Service_JIT, "plugin does not implement all necessary functionality"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + return; + } + + if (!context.LoadNRO(nro_plugin)) { + LOG_ERROR(Service_JIT, "failed to load plugin"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + return; + } + + context.MapProcessMemory(configuration.sys_ro_memory.offset, + configuration.sys_ro_memory.size); + context.MapProcessMemory(configuration.sys_rx_memory.offset, + configuration.sys_rx_memory.size); + context.MapProcessMemory(configuration.work_memory.offset, configuration.work_memory.size); + + if (callbacks.rtld_init != 0) { + context.CallFunction(callbacks.rtld_init); + } + + const auto version{context.CallFunction(callbacks.GetVersion)}; + if (version != 1) { + LOG_ERROR(Service_JIT, "unknown plugin version {}", version); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + return; + } + + const auto resolve{context.GetHelper("_resolve")}; + if (callbacks.ResolveBasicSymbols != 0) { + context.CallFunction(callbacks.ResolveBasicSymbols, resolve); + } + const auto resolve_ptr{context.AddHeap(resolve)}; + if (callbacks.SetupDiagnostics != 0) { + context.CallFunction(callbacks.SetupDiagnostics, 0u, resolve_ptr); + } + + context.CallFunction(callbacks.Configure, 0u); + const auto configuration_ptr{context.AddHeap(configuration)}; + context.CallFunction(callbacks.OnPrepared, configuration_ptr); + + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultSuccess); + } + + void GetCodeAddress(Kernel::HLERequestContext& ctx) { + IPC::ResponseBuilder rb{ctx, 6}; + rb.Push(ResultSuccess); + rb.Push(configuration.user_rx_memory.offset); + rb.Push(configuration.user_ro_memory.offset); + } + +private: + using Struct32 = std::array; + + struct GuestCallbacks { + VAddr rtld_fini; + VAddr rtld_init; + VAddr Control; + VAddr ResolveBasicSymbols; + VAddr SetupDiagnostics; + VAddr Configure; + VAddr GenerateCode; + VAddr GetVersion; + VAddr Keeper; + VAddr OnPrepared; + }; + + struct JITConfiguration { + CodeRange user_rx_memory; + CodeRange user_ro_memory; + CodeRange work_memory; + CodeRange sys_rx_memory; + CodeRange sys_ro_memory; + }; + + GuestCallbacks callbacks; + JITConfiguration configuration; + JITContext context; }; class JITU final : public ServiceFramework { @@ -40,9 +269,59 @@ public: void CreateJitEnvironment(Kernel::HLERequestContext& ctx) { LOG_DEBUG(Service_JIT, "called"); + struct Parameters { + u64 rx_size; + u64 ro_size; + }; + + IPC::RequestParser rp{ctx}; + const auto parameters{rp.PopRaw()}; + const auto executable_mem_handle{ctx.GetCopyHandle(1)}; + const auto readable_mem_handle{ctx.GetCopyHandle(2)}; + + if (parameters.rx_size == 0 || parameters.ro_size == 0) { + LOG_ERROR(Service_JIT, "attempted to init with empty code regions"); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + return; + } + + // The copy handle at index 0 is the process handle, but handle tables are + // per-process, so there is no point reading it here until we are multiprocess + const auto& process{*system.CurrentProcess()}; + + auto executable_mem{ + process.GetHandleTable().GetObject(executable_mem_handle)}; + if (executable_mem.IsNull()) { + LOG_ERROR(Service_JIT, "executable_mem is null for handle=0x{:08X}", + executable_mem_handle); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + return; + } + + auto readable_mem{ + process.GetHandleTable().GetObject(readable_mem_handle)}; + if (readable_mem.IsNull()) { + LOG_ERROR(Service_JIT, "readable_mem is null for handle=0x{:08X}", readable_mem_handle); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultUnknown); + return; + } + + const CodeRange user_rx{ + .offset = executable_mem->GetSourceAddress(), + .size = parameters.rx_size, + }; + + const CodeRange user_ro{ + .offset = readable_mem->GetSourceAddress(), + .size = parameters.ro_size, + }; + IPC::ResponseBuilder rb{ctx, 2, 0, 1}; rb.Push(ResultSuccess); - rb.PushIpcInterface(system); + rb.PushIpcInterface(system, user_rx, user_ro); } }; diff --git a/src/core/hle/service/jit/jit_context.cpp b/src/core/hle/service/jit/jit_context.cpp new file mode 100644 index 000000000..630368fb3 --- /dev/null +++ b/src/core/hle/service/jit/jit_context.cpp @@ -0,0 +1,424 @@ +// Copyright 2022 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include +#include +#include +#include +#include +#include + +#include "common/alignment.h" +#include "common/common_funcs.h" +#include "common/div_ceil.h" +#include "common/logging/log.h" +#include "core/hle/service/jit/jit_context.h" +#include "core/memory.h" + +namespace Service::JIT { + +constexpr std::array STOP_ARM64 = { + 0x01, 0x00, 0x00, 0xd4, // svc #0 +}; + +constexpr std::array RESOLVE_ARM64 = { + 0x21, 0x00, 0x00, 0xd4, // svc #1 + 0xc0, 0x03, 0x5f, 0xd6, // ret +}; + +constexpr std::array PANIC_ARM64 = { + 0x41, 0x00, 0x00, 0xd4, // svc #2 +}; + +constexpr std::array MEMMOVE_ARM64 = { + 0x1f, 0x00, 0x01, 0xeb, // cmp x0, x1 + 0x83, 0x01, 0x00, 0x54, // b.lo #+34 + 0x42, 0x04, 0x00, 0xd1, // sub x2, x2, 1 + 0x22, 0x01, 0xf8, 0xb7, // tbnz x2, #63, #+36 + 0x23, 0x68, 0x62, 0x38, // ldrb w3, [x1, x2] + 0x03, 0x68, 0x22, 0x38, // strb w3, [x0, x2] + 0xfc, 0xff, 0xff, 0x17, // b #-16 + 0x24, 0x68, 0x63, 0x38, // ldrb w4, [x1, x3] + 0x04, 0x68, 0x23, 0x38, // strb w4, [x0, x3] + 0x63, 0x04, 0x00, 0x91, // add x3, x3, 1 + 0x7f, 0x00, 0x02, 0xeb, // cmp x3, x2 + 0x8b, 0xff, 0xff, 0x54, // b.lt #-16 + 0xc0, 0x03, 0x5f, 0xd6, // ret + 0x03, 0x00, 0x80, 0xd2, // mov x3, 0 + 0xfc, 0xff, 0xff, 0x17, // b #-16 +}; + +constexpr std::array MEMSET_ARM64 = { + 0x03, 0x00, 0x80, 0xd2, // mov x3, 0 + 0x7f, 0x00, 0x02, 0xeb, // cmp x3, x2 + 0x4b, 0x00, 0x00, 0x54, // b.lt #+8 + 0xc0, 0x03, 0x5f, 0xd6, // ret + 0x01, 0x68, 0x23, 0x38, // strb w1, [x0, x3] + 0x63, 0x04, 0x00, 0x91, // add x3, x3, 1 + 0xfb, 0xff, 0xff, 0x17, // b #-20 +}; + +struct HelperFunction { + const char* name; + const std::span data; +}; + +constexpr std::array HELPER_FUNCTIONS{{ + {"_stop", STOP_ARM64}, + {"_resolve", RESOLVE_ARM64}, + {"_panic", PANIC_ARM64}, + {"memcpy", MEMMOVE_ARM64}, + {"memmove", MEMMOVE_ARM64}, + {"memset", MEMSET_ARM64}, +}}; + +struct Elf64_Dyn { + u64 d_tag; + u64 d_un; +}; + +struct Elf64_Rela { + u64 r_offset; + u64 r_info; + s64 r_addend; +}; + +static constexpr u32 Elf64_RelaType(const Elf64_Rela* rela) { + return static_cast(rela->r_info); +} + +constexpr int DT_RELA = 7; /* Address of Rela relocs */ +constexpr int DT_RELASZ = 8; /* Total size of Rela relocs */ +constexpr int R_AARCH64_RELATIVE = 1027; /* Adjust by program base. */ + +constexpr size_t STACK_ALIGN = 16; + +class JITContextImpl; + +using IntervalSet = boost::icl::interval_set::type; +using IntervalType = boost::icl::interval_set::interval_type; + +class DynarmicCallbacks64 : public Dynarmic::A64::UserCallbacks { +public: + explicit DynarmicCallbacks64(Core::Memory::Memory& memory_, std::vector& local_memory_, + IntervalSet& mapped_ranges_, JITContextImpl& parent_) + : memory{memory_}, local_memory{local_memory_}, + mapped_ranges{mapped_ranges_}, parent{parent_} {} + + u8 MemoryRead8(u64 vaddr) override { + return ReadMemory(vaddr); + } + u16 MemoryRead16(u64 vaddr) override { + return ReadMemory(vaddr); + } + u32 MemoryRead32(u64 vaddr) override { + return ReadMemory(vaddr); + } + u64 MemoryRead64(u64 vaddr) override { + return ReadMemory(vaddr); + } + u128 MemoryRead128(u64 vaddr) override { + return ReadMemory(vaddr); + } + std::string MemoryReadCString(u64 vaddr) { + std::string result; + u8 next; + + while ((next = MemoryRead8(vaddr++)) != 0) { + result += next; + } + + return result; + } + + void MemoryWrite8(u64 vaddr, u8 value) override { + WriteMemory(vaddr, value); + } + void MemoryWrite16(u64 vaddr, u16 value) override { + WriteMemory(vaddr, value); + } + void MemoryWrite32(u64 vaddr, u32 value) override { + WriteMemory(vaddr, value); + } + void MemoryWrite64(u64 vaddr, u64 value) override { + WriteMemory(vaddr, value); + } + void MemoryWrite128(u64 vaddr, u128 value) override { + WriteMemory(vaddr, value); + } + + bool MemoryWriteExclusive8(u64 vaddr, u8 value, u8) override { + return WriteMemory(vaddr, value); + } + bool MemoryWriteExclusive16(u64 vaddr, u16 value, u16) override { + return WriteMemory(vaddr, value); + } + bool MemoryWriteExclusive32(u64 vaddr, u32 value, u32) override { + return WriteMemory(vaddr, value); + } + bool MemoryWriteExclusive64(u64 vaddr, u64 value, u64) override { + return WriteMemory(vaddr, value); + } + bool MemoryWriteExclusive128(u64 vaddr, u128 value, u128) override { + return WriteMemory(vaddr, value); + } + + void CallSVC(u32 swi) override; + void ExceptionRaised(u64 pc, Dynarmic::A64::Exception exception) override; + void InterpreterFallback(u64 pc, size_t num_instructions) override; + + void AddTicks(u64 ticks) override {} + u64 GetTicksRemaining() override { + return std::numeric_limits::max(); + } + u64 GetCNTPCT() override { + return 0; + } + + template + T ReadMemory(u64 vaddr) { + T ret{}; + if (boost::icl::contains(mapped_ranges, vaddr)) { + memory.ReadBlock(vaddr, &ret, sizeof(T)); + } else if (vaddr + sizeof(T) > local_memory.size()) { + LOG_CRITICAL(Service_JIT, "plugin: unmapped read @ 0x{:016x}", vaddr); + } else { + std::memcpy(&ret, local_memory.data() + vaddr, sizeof(T)); + } + return ret; + } + + template + bool WriteMemory(u64 vaddr, const T value) { + if (boost::icl::contains(mapped_ranges, vaddr)) { + memory.WriteBlock(vaddr, &value, sizeof(T)); + } else if (vaddr + sizeof(T) > local_memory.size()) { + LOG_CRITICAL(Service_JIT, "plugin: unmapped write @ 0x{:016x}", vaddr); + } else { + std::memcpy(local_memory.data() + vaddr, &value, sizeof(T)); + } + return true; + } + +private: + Core::Memory::Memory& memory; + std::vector& local_memory; + IntervalSet& mapped_ranges; + JITContextImpl& parent; +}; + +class JITContextImpl { +public: + explicit JITContextImpl(Core::Memory::Memory& memory_) : memory{memory_} { + callbacks = + std::make_unique(memory, local_memory, mapped_ranges, *this); + user_config.callbacks = callbacks.get(); + jit = std::make_unique(user_config); + } + + bool LoadNRO(std::span data) { + local_memory.clear(); + local_memory.insert(local_memory.end(), data.begin(), data.end()); + + if (FixupRelocations()) { + InsertHelperFunctions(); + InsertStack(); + return true; + } else { + return false; + } + } + + bool FixupRelocations() { + const VAddr mod_offset{callbacks->MemoryRead32(4)}; + if (callbacks->MemoryRead32(mod_offset) != Common::MakeMagic('M', 'O', 'D', '0')) { + return false; + } + + VAddr dynamic_offset{mod_offset + callbacks->MemoryRead32(mod_offset + 4)}; + VAddr rela_dyn = 0; + size_t num_rela = 0; + while (true) { + const auto dyn{callbacks->ReadMemory(dynamic_offset)}; + dynamic_offset += sizeof(Elf64_Dyn); + + if (!dyn.d_tag) { + break; + } + if (dyn.d_tag == DT_RELA) { + rela_dyn = dyn.d_un; + } + if (dyn.d_tag == DT_RELASZ) { + num_rela = dyn.d_un / sizeof(Elf64_Rela); + } + } + + for (size_t i = 0; i < num_rela; i++) { + const auto rela{callbacks->ReadMemory(rela_dyn + i * sizeof(Elf64_Rela))}; + if (Elf64_RelaType(&rela) != R_AARCH64_RELATIVE) { + continue; + } + const VAddr contents{callbacks->MemoryRead64(rela.r_offset)}; + callbacks->MemoryWrite64(rela.r_offset, contents + rela.r_addend); + } + + return true; + } + + void InsertHelperFunctions() { + for (const auto& [name, contents] : HELPER_FUNCTIONS) { + helpers[name] = local_memory.size(); + local_memory.insert(local_memory.end(), contents.begin(), contents.end()); + } + } + + void InsertStack() { + const u64 pad_amount{Common::AlignUp(local_memory.size(), STACK_ALIGN) - + local_memory.size()}; + local_memory.insert(local_memory.end(), 0x10000 + pad_amount, 0); + top_of_stack = local_memory.size(); + heap_pointer = top_of_stack; + } + + void MapProcessMemory(VAddr dest_address, std::size_t size) { + mapped_ranges.add(IntervalType{dest_address, dest_address + size}); + } + + void PushArgument(const void* data, size_t size) { + const size_t num_words = Common::DivCeil(size, sizeof(u64)); + const size_t current_pos = argument_stack.size(); + argument_stack.insert(argument_stack.end(), num_words, 0); + std::memcpy(argument_stack.data() + current_pos, data, size); + } + + void SetupArguments() { + for (size_t i = 0; i < 8 && i < argument_stack.size(); i++) { + jit->SetRegister(i, argument_stack[i]); + } + if (argument_stack.size() > 8) { + const VAddr new_sp = Common::AlignDown( + top_of_stack - (argument_stack.size() - 8) * sizeof(u64), STACK_ALIGN); + for (size_t i = 8; i < argument_stack.size(); i++) { + callbacks->MemoryWrite64(new_sp + (i - 8) * sizeof(u64), argument_stack[i]); + } + jit->SetSP(new_sp); + } + argument_stack.clear(); + heap_pointer = top_of_stack; + } + + u64 CallFunction(VAddr func) { + jit->SetRegister(30, helpers["_stop"]); + jit->SetSP(top_of_stack); + SetupArguments(); + + jit->SetPC(func); + jit->Run(); + return jit->GetRegister(0); + } + + VAddr GetHelper(const std::string& name) { + return helpers[name]; + } + + VAddr AddHeap(const void* data, size_t size) { + const size_t num_bytes{Common::AlignUp(size, STACK_ALIGN)}; + if (heap_pointer + num_bytes > local_memory.size()) { + local_memory.insert(local_memory.end(), + (heap_pointer + num_bytes) - local_memory.size(), 0); + } + const VAddr location{heap_pointer}; + std::memcpy(local_memory.data() + location, data, size); + heap_pointer += num_bytes; + return location; + } + + void GetHeap(VAddr location, void* data, size_t size) { + std::memcpy(data, local_memory.data() + location, size); + } + + std::unique_ptr callbacks; + std::vector local_memory; + std::vector argument_stack; + IntervalSet mapped_ranges; + Dynarmic::A64::UserConfig user_config; + std::unique_ptr jit; + std::map> helpers; + Core::Memory::Memory& memory; + VAddr top_of_stack; + VAddr heap_pointer; +}; + +void DynarmicCallbacks64::CallSVC(u32 swi) { + switch (swi) { + case 0: + parent.jit->HaltExecution(); + break; + + case 1: { + // X0 contains a char* for a symbol to resolve + std::string name{MemoryReadCString(parent.jit->GetRegister(0))}; + const auto helper{parent.helpers[name]}; + + if (helper != 0) { + parent.jit->SetRegister(0, helper); + } else { + LOG_WARNING(Service_JIT, "plugin requested unknown function {}", name); + parent.jit->SetRegister(0, parent.helpers["_panic"]); + } + break; + } + + case 2: + default: + LOG_CRITICAL(Service_JIT, "plugin panicked!"); + parent.jit->HaltExecution(); + break; + } +} + +void DynarmicCallbacks64::ExceptionRaised(u64 pc, Dynarmic::A64::Exception exception) { + LOG_CRITICAL(Service_JIT, "Illegal operation PC @ {:08x}", pc); + parent.jit->HaltExecution(); +} + +void DynarmicCallbacks64::InterpreterFallback(u64 pc, size_t num_instructions) { + LOG_CRITICAL(Service_JIT, "Unimplemented instruction PC @ {:08x}", pc); + parent.jit->HaltExecution(); +} + +JITContext::JITContext(Core::Memory::Memory& memory) + : impl{std::make_unique(memory)} {} + +JITContext::~JITContext() {} + +bool JITContext::LoadNRO(std::span data) { + return impl->LoadNRO(data); +} + +void JITContext::MapProcessMemory(VAddr dest_address, std::size_t size) { + impl->MapProcessMemory(dest_address, size); +} + +u64 JITContext::CallFunction(VAddr func) { + return impl->CallFunction(func); +} + +void JITContext::PushArgument(const void* data, size_t size) { + impl->PushArgument(data, size); +} + +VAddr JITContext::GetHelper(const std::string& name) { + return impl->GetHelper(name); +} + +VAddr JITContext::AddHeap(const void* data, size_t size) { + return impl->AddHeap(data, size); +} + +void JITContext::GetHeap(VAddr location, void* data, size_t size) { + impl->GetHeap(location, data, size); +} + +} // namespace Service::JIT diff --git a/src/core/hle/service/jit/jit_context.h b/src/core/hle/service/jit/jit_context.h new file mode 100644 index 000000000..d8bf76cff --- /dev/null +++ b/src/core/hle/service/jit/jit_context.h @@ -0,0 +1,65 @@ +// Copyright 2022 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include +#include +#include + +#include "common/common_types.h" + +namespace Core::Memory { +class Memory; +} + +namespace Service::JIT { + +class JITContextImpl; + +class JITContext { +public: + explicit JITContext(Core::Memory::Memory& memory); + ~JITContext(); + + [[nodiscard]] bool LoadNRO(std::span data); + void MapProcessMemory(VAddr dest_address, std::size_t size); + + template + u64 CallFunction(VAddr func, T argument, Ts... rest) { + static_assert(std::is_trivially_copyable_v); + PushArgument(&argument, sizeof(argument)); + + if constexpr (sizeof...(rest) > 0) { + return CallFunction(func, rest...); + } else { + return CallFunction(func); + } + } + + u64 CallFunction(VAddr func); + VAddr GetHelper(const std::string& name); + + template + VAddr AddHeap(T argument) { + return AddHeap(&argument, sizeof(argument)); + } + VAddr AddHeap(const void* data, size_t size); + + template + T GetHeap(VAddr location) { + static_assert(std::is_trivially_copyable_v); + T result; + GetHeap(location, &result, sizeof(result)); + return result; + } + void GetHeap(VAddr location, void* data, size_t size); + +private: + std::unique_ptr impl; + + void PushArgument(const void* data, size_t size); +}; + +} // namespace Service::JIT -- cgit v1.2.3