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Merge pull request #8199 from liamwhite/jit-service 

service: jit: Implement the JIT service
This commit is contained in:
Fernando S 2022-04-13 23:20:34 +02:00 committed by GitHub
parent ca2accfb25 f17aaeccf9
commit 276764cfe9
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 784 additions and 9 deletions
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2
src/core/CMakeLists.txt
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@ -460,6 +460,8 @@ add_library(core STATIC
hle/service/hid/controllers/touchscreen.h hle/service/hid/controllers/touchscreen.h
hle/service/hid/controllers/xpad.cpp hle/service/hid/controllers/xpad.cpp
hle/service/hid/controllers/xpad.h 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.cpp
hle/service/jit/jit.h hle/service/jit/jit.h
hle/service/lbl/lbl.cpp hle/service/lbl/lbl.cpp

11
src/core/hle/kernel/k_code_memory.cpp
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@ -35,9 +35,14 @@ ResultCode KCodeMemory::Initialize(Core::DeviceMemory& device_memory, VAddr addr
R_TRY(page_table.LockForCodeMemory(addr, size)) R_TRY(page_table.LockForCodeMemory(addr, size))
// Clear the memory. // 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. // Set remaining tracking members.
m_address = addr; m_address = addr;

291
src/core/hle/service/jit/jit.cpp
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@ -2,27 +2,256 @@
// Licensed under GPLv2 or any later version // Licensed under GPLv2 or any later version
// Refer to the license.txt file included. // 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/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/result.h"
#include "core/hle/service/jit/jit.h" #include "core/hle/service/jit/jit.h"
#include "core/hle/service/jit/jit_context.h"
#include "core/hle/service/service.h" #include "core/hle/service/service.h"
#include "core/memory.h"
namespace Service::JIT { namespace Service::JIT {
struct CodeRange {
u64 offset;
u64 size;
};
class IJitEnvironment final : public ServiceFramework<IJitEnvironment> { class IJitEnvironment final : public ServiceFramework<IJitEnvironment> {
public: 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 // clang-format off
static const FunctionInfo functions[] = { static const FunctionInfo functions[] = {
{0, nullptr, "GenerateCode"}, {0, &IJitEnvironment::GenerateCode, "GenerateCode"},
{1, nullptr, "Control"}, {1, &IJitEnvironment::Control, "Control"},
{1000, nullptr, "LoadPlugin"}, {1000, &IJitEnvironment::LoadPlugin, "LoadPlugin"},
{1001, nullptr, "GetCodeAddress"}, {1001, &IJitEnvironment::GetCodeAddress, "GetCodeAddress"},
}; };
// clang-format on // clang-format on
RegisterHandlers(functions); 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<Parameters>()};
std::vector<u8> input_buffer{ctx.CanReadBuffer() ? ctx.ReadBuffer() : std::vector<u8>()};
std::vector<u8> 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<s32>(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<CodeRange>(cr1_out_ptr)};
const auto cr2_out{context.GetHeap<CodeRange>(cr2_out_ptr)};
IPC::ResponseBuilder rb{ctx, 8};
rb.Push(ResultSuccess);
rb.Push<u64>(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<u64>()};
const auto input_buffer{ctx.ReadBuffer()};
std::vector<u8> 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<s32>(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<u64>()};
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<Kernel::KTransferMemory>(
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<u8, 32>;
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<JITU> { class JITU final : public ServiceFramework<JITU> {
@ -40,9 +269,59 @@ public:
void CreateJitEnvironment(Kernel::HLERequestContext& ctx) { void CreateJitEnvironment(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_JIT, "called"); LOG_DEBUG(Service_JIT, "called");
struct Parameters {
u64 rx_size;
u64 ro_size;
};
IPC::RequestParser rp{ctx};
const auto parameters{rp.PopRaw<Parameters>()};
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<Kernel::KCodeMemory>(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<Kernel::KCodeMemory>(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}; IPC::ResponseBuilder rb{ctx, 2, 0, 1};
rb.Push(ResultSuccess); rb.Push(ResultSuccess);
rb.PushIpcInterface<IJitEnvironment>(system); rb.PushIpcInterface<IJitEnvironment>(system, user_rx, user_ro);
} }
}; };

424
src/core/hle/service/jit/jit_context.cpp Normal file
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@ -0,0 +1,424 @@
// Copyright 2022 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <map>
#include <span>
#include <boost/icl/interval_set.hpp>
#include <dynarmic/interface/A64/a64.h>
#include <dynarmic/interface/A64/config.h>
#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<u8, 4> STOP_ARM64 = {
0x01, 0x00, 0x00, 0xd4, // svc #0
};
constexpr std::array<u8, 8> RESOLVE_ARM64 = {
0x21, 0x00, 0x00, 0xd4, // svc #1
0xc0, 0x03, 0x5f, 0xd6, // ret
};
constexpr std::array<u8, 4> PANIC_ARM64 = {
0x41, 0x00, 0x00, 0xd4, // svc #2
};
constexpr std::array<u8, 60> 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<u8, 28> 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<const u8> data;
};
constexpr std::array<HelperFunction, 6> 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<u32>(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<VAddr>::type;
using IntervalType = boost::icl::interval_set<VAddr>::interval_type;
class DynarmicCallbacks64 : public Dynarmic::A64::UserCallbacks {
public:
explicit DynarmicCallbacks64(Core::Memory::Memory& memory_, std::vector<u8>& 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<u8>(vaddr);
}
u16 MemoryRead16(u64 vaddr) override {
return ReadMemory<u16>(vaddr);
}
u32 MemoryRead32(u64 vaddr) override {
return ReadMemory<u32>(vaddr);
}
u64 MemoryRead64(u64 vaddr) override {
return ReadMemory<u64>(vaddr);
}
u128 MemoryRead128(u64 vaddr) override {
return ReadMemory<u128>(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<u8>(vaddr, value);
}
void MemoryWrite16(u64 vaddr, u16 value) override {
WriteMemory<u16>(vaddr, value);
}
void MemoryWrite32(u64 vaddr, u32 value) override {
WriteMemory<u32>(vaddr, value);
}
void MemoryWrite64(u64 vaddr, u64 value) override {
WriteMemory<u64>(vaddr, value);
}
void MemoryWrite128(u64 vaddr, u128 value) override {
WriteMemory<u128>(vaddr, value);
}
bool MemoryWriteExclusive8(u64 vaddr, u8 value, u8) override {
return WriteMemory<u8>(vaddr, value);
}
bool MemoryWriteExclusive16(u64 vaddr, u16 value, u16) override {
return WriteMemory<u16>(vaddr, value);
}
bool MemoryWriteExclusive32(u64 vaddr, u32 value, u32) override {
return WriteMemory<u32>(vaddr, value);
}
bool MemoryWriteExclusive64(u64 vaddr, u64 value, u64) override {
return WriteMemory<u64>(vaddr, value);
}
bool MemoryWriteExclusive128(u64 vaddr, u128 value, u128) override {
return WriteMemory<u128>(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<u32>::max();
}
u64 GetCNTPCT() override {
return 0;
}
template <class T>
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 <class T>
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<u8>& local_memory;
IntervalSet& mapped_ranges;
JITContextImpl& parent;
};
class JITContextImpl {
public:
explicit JITContextImpl(Core::Memory::Memory& memory_) : memory{memory_} {
callbacks =
std::make_unique<DynarmicCallbacks64>(memory, local_memory, mapped_ranges, *this);
user_config.callbacks = callbacks.get();
jit = std::make_unique<Dynarmic::A64::Jit>(user_config);
}
bool LoadNRO(std::span<const u8> 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<Elf64_Dyn>(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<Elf64_Rela>(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<DynarmicCallbacks64> callbacks;
std::vector<u8> local_memory;
std::vector<u64> argument_stack;
IntervalSet mapped_ranges;
Dynarmic::A64::UserConfig user_config;
std::unique_ptr<Dynarmic::A64::Jit> jit;
std::map<std::string, VAddr, std::less<>> 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<JITContextImpl>(memory)} {}
JITContext::~JITContext() {}
bool JITContext::LoadNRO(std::span<const u8> 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

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src/core/hle/service/jit/jit_context.h Normal file
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// Copyright 2022 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <span>
#include <string>
#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<const u8> data);
void MapProcessMemory(VAddr dest_address, std::size_t size);
template <typename T, typename... Ts>
u64 CallFunction(VAddr func, T argument, Ts... rest) {
static_assert(std::is_trivially_copyable_v<T>);
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 <typename T>
VAddr AddHeap(T argument) {
return AddHeap(&argument, sizeof(argument));
}
VAddr AddHeap(const void* data, size_t size);
template <typename T>
T GetHeap(VAddr location) {
static_assert(std::is_trivially_copyable_v<T>);
T result;
GetHeap(location, &result, sizeof(result));
return result;
}
void GetHeap(VAddr location, void* data, size_t size);
private:
std::unique_ptr<JITContextImpl> impl;
void PushArgument(const void* data, size_t size);
};
} // namespace Service::JIT