mirror of
https://github.com/RPCS3/rpcs3
synced 2024-11-02 11:45:30 +00:00
720 lines
16 KiB
C++
720 lines
16 KiB
C++
#include "util/types.hpp"
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#include "util/sysinfo.hpp"
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#include "JIT.h"
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#include "StrFmt.h"
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#include "File.h"
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#include "util/logs.hpp"
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#include "mutex.h"
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#include "util/vm.hpp"
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#include "util/asm.hpp"
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#include "Crypto/unzip.h"
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#include <charconv>
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LOG_CHANNEL(jit_log, "JIT");
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#ifdef LLVM_AVAILABLE
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#include <unordered_map>
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#ifdef _MSC_VER
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#pragma warning(push, 0)
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#else
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wall"
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#pragma GCC diagnostic ignored "-Wextra"
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#pragma GCC diagnostic ignored "-Wold-style-cast"
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#pragma GCC diagnostic ignored "-Wstrict-aliasing"
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#pragma GCC diagnostic ignored "-Wredundant-decls"
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#pragma GCC diagnostic ignored "-Weffc++"
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#pragma GCC diagnostic ignored "-Wmissing-noreturn"
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#endif
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#include <llvm/Support/CodeGen.h>
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/TargetParser/Host.h"
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#include "llvm/ExecutionEngine/ExecutionEngine.h"
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#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
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#include "llvm/ExecutionEngine/ObjectCache.h"
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#include "llvm/ExecutionEngine/JITEventListener.h"
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/Object/SymbolSize.h"
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#ifdef _MSC_VER
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#pragma warning(pop)
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#else
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#pragma GCC diagnostic pop
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#endif
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const bool jit_initialize = []() -> bool
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{
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llvm::InitializeNativeTarget();
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llvm::InitializeNativeTargetAsmPrinter();
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llvm::InitializeNativeTargetAsmParser();
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LLVMLinkInMCJIT();
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return true;
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}();
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[[noreturn]] static void null(const char* name)
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{
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fmt::throw_exception("Null function: %s", name);
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}
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namespace vm
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{
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extern u8* const g_sudo_addr;
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}
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static shared_mutex null_mtx;
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static std::unordered_map<std::string, u64> null_funcs;
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static u64 make_null_function(const std::string& name)
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{
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if (name.starts_with("__0x"))
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{
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u32 addr = -1;
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auto res = std::from_chars(name.c_str() + 4, name.c_str() + name.size(), addr, 16);
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if (res.ec == std::errc() && res.ptr == name.c_str() + name.size() && addr < 0x8000'0000)
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{
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// Point the garbage to reserved, non-executable memory
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return reinterpret_cast<u64>(vm::g_sudo_addr + addr);
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}
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}
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std::lock_guard lock(null_mtx);
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if (u64& func_ptr = null_funcs[name]) [[likely]]
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{
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// Already exists
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return func_ptr;
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}
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else
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{
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using namespace asmjit;
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// Build a "null" function that contains its name
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const auto func = build_function_asm<void (*)()>("NULL", [&](native_asm& c, auto& args)
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{
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#if defined(ARCH_X64)
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Label data = c.newLabel();
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c.lea(args[0], x86::qword_ptr(data, 0));
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c.jmp(Imm(&null));
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c.align(AlignMode::kCode, 16);
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c.bind(data);
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// Copy function name bytes
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for (char ch : name)
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c.db(ch);
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c.db(0);
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c.align(AlignMode::kData, 16);
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#else
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// AArch64 implementation
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Label jmp_address = c.newLabel();
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Label data = c.newLabel();
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// Force absolute jump to prevent out of bounds PC-rel jmp
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c.ldr(args[0], arm::ptr(jmp_address));
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c.br(args[0]);
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c.align(AlignMode::kCode, 16);
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c.bind(data);
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c.embed(name.c_str(), name.size());
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c.embedUInt8(0U);
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c.bind(jmp_address);
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c.embedUInt64(reinterpret_cast<u64>(&null));
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c.align(AlignMode::kData, 16);
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#endif
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});
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func_ptr = reinterpret_cast<u64>(func);
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return func_ptr;
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}
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}
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struct JITAnnouncer : llvm::JITEventListener
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{
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void notifyObjectLoaded(u64, const llvm::object::ObjectFile& obj, const llvm::RuntimeDyld::LoadedObjectInfo& info) override
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{
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using namespace llvm;
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object::OwningBinary<object::ObjectFile> debug_obj_ = info.getObjectForDebug(obj);
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if (!debug_obj_.getBinary())
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{
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#ifdef __linux__
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jit_log.error("LLVM: Failed to announce JIT events (no debug object)");
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#endif
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return;
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}
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const object::ObjectFile& debug_obj = *debug_obj_.getBinary();
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for (const auto& [sym, size] : computeSymbolSizes(debug_obj))
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{
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Expected<object::SymbolRef::Type> type_ = sym.getType();
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if (!type_ || *type_ != object::SymbolRef::ST_Function)
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continue;
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Expected<StringRef> name = sym.getName();
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if (!name)
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continue;
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Expected<u64> addr = sym.getAddress();
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if (!addr)
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continue;
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jit_announce(*addr, size, {name->data(), name->size()});
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}
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}
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};
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// Simple memory manager
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struct MemoryManager1 : llvm::RTDyldMemoryManager
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{
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// 256 MiB for code or data
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static constexpr u64 c_max_size = 0x20000000 / 2;
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// Allocation unit (2M)
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static constexpr u64 c_page_size = 2 * 1024 * 1024;
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// Reserve 512 MiB
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u8* const ptr = static_cast<u8*>(utils::memory_reserve(c_max_size * 2));
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u64 code_ptr = 0;
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u64 data_ptr = c_max_size;
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MemoryManager1() = default;
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MemoryManager1(const MemoryManager1&) = delete;
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MemoryManager1& operator=(const MemoryManager1&) = delete;
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~MemoryManager1() override
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{
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// Hack: don't release to prevent reuse of address space, see jit_announce
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utils::memory_decommit(ptr, c_max_size * 2);
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}
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llvm::JITSymbol findSymbol(const std::string& name) override
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{
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u64 addr = RTDyldMemoryManager::getSymbolAddress(name);
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if (!addr)
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{
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addr = make_null_function(name);
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if (!addr)
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{
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fmt::throw_exception("Failed to link '%s'", name);
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}
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}
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return {addr, llvm::JITSymbolFlags::Exported};
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}
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u8* allocate(u64& oldp, uptr size, uint align, utils::protection prot)
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{
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if (align > c_page_size)
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{
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jit_log.fatal("Unsupported alignment (size=0x%x, align=0x%x)", size, align);
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return nullptr;
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}
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const u64 olda = utils::align(oldp, align);
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const u64 newp = utils::align(olda + size, align);
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if ((newp - 1) / c_max_size != oldp / c_max_size)
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{
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jit_log.fatal("Out of memory (size=0x%x, align=0x%x)", size, align);
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return nullptr;
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}
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if ((oldp - 1) / c_page_size != (newp - 1) / c_page_size)
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{
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// Allocate pages on demand
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const u64 pagea = utils::align(oldp, c_page_size);
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const u64 psize = utils::align(newp - pagea, c_page_size);
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utils::memory_commit(this->ptr + pagea, psize, prot);
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}
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// Update allocation counter
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oldp = newp;
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return this->ptr + olda;
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}
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u8* allocateCodeSection(uptr size, uint align, uint /*sec_id*/, llvm::StringRef /*sec_name*/) override
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{
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return allocate(code_ptr, size, align, utils::protection::wx);
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}
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u8* allocateDataSection(uptr size, uint align, uint /*sec_id*/, llvm::StringRef /*sec_name*/, bool /*is_ro*/) override
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{
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return allocate(data_ptr, size, align, utils::protection::rw);
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}
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bool finalizeMemory(std::string* = nullptr) override
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{
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return false;
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}
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void registerEHFrames(u8*, u64, usz) override
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{
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}
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void deregisterEHFrames() override
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{
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}
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};
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// Simple memory manager
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struct MemoryManager2 : llvm::RTDyldMemoryManager
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{
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MemoryManager2() = default;
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~MemoryManager2() override
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{
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}
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llvm::JITSymbol findSymbol(const std::string& name) override
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{
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u64 addr = RTDyldMemoryManager::getSymbolAddress(name);
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if (!addr)
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{
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addr = make_null_function(name);
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if (!addr)
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{
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fmt::throw_exception("Failed to link '%s' (MM2)", name);
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}
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}
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return {addr, llvm::JITSymbolFlags::Exported};
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}
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u8* allocateCodeSection(uptr size, uint align, uint /*sec_id*/, llvm::StringRef /*sec_name*/) override
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{
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return jit_runtime::alloc(size, align, true);
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}
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u8* allocateDataSection(uptr size, uint align, uint /*sec_id*/, llvm::StringRef /*sec_name*/, bool /*is_ro*/) override
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{
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return jit_runtime::alloc(size, align, false);
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}
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bool finalizeMemory(std::string* = nullptr) override
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{
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return false;
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}
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void registerEHFrames(u8*, u64, usz) override
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{
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}
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void deregisterEHFrames() override
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{
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}
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};
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// Helper class
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class ObjectCache final : public llvm::ObjectCache
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{
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const std::string& m_path;
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const std::add_pointer_t<jit_compiler> m_compiler = nullptr;
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public:
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ObjectCache(const std::string& path, jit_compiler* compiler = nullptr)
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: m_path(path)
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, m_compiler(compiler)
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{
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}
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~ObjectCache() override = default;
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void notifyObjectCompiled(const llvm::Module* _module, llvm::MemoryBufferRef obj) override
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{
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std::string name = m_path;
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name.append(_module->getName().data());
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//fs::file(name, fs::rewrite).write(obj.getBufferStart(), obj.getBufferSize());
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name.append(".gz");
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if (!obj.getBufferSize())
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{
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jit_log.error("LLVM: Nothing to write: %s", name);
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return;
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}
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ensure(m_compiler);
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fs::file module_file(name, fs::rewrite);
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if (!module_file)
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{
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jit_log.error("LLVM: Failed to create module file: %s (%s)", name, fs::g_tls_error);
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return;
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}
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// Bold assumption about upper limit of space consumption
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const usz max_size = obj.getBufferSize() * 4;
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if (!m_compiler->add_sub_disk_space(0 - max_size))
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{
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jit_log.error("LLVM: Failed to create module file: %s (not enough disk space left)", name);
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return;
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}
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if (!zip(obj.getBufferStart(), obj.getBufferSize(), module_file))
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{
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jit_log.error("LLVM: Failed to compress module: %s", _module->getName().data());
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module_file.close();
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fs::remove_file(name);
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return;
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}
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jit_log.notice("LLVM: Created module: %s", _module->getName().data());
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// Restore space that was overestimated
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ensure(m_compiler->add_sub_disk_space(max_size - module_file.size()));
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}
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static std::unique_ptr<llvm::MemoryBuffer> load(const std::string& path)
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{
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if (fs::file cached{path + ".gz", fs::read})
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{
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const std::vector<u8> cached_data = cached.to_vector<u8>();
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if (cached_data.empty()) [[unlikely]]
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{
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return nullptr;
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}
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const std::vector<u8> out = unzip(cached_data);
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if (out.empty())
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{
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jit_log.error("LLVM: Failed to unzip module: '%s'", path);
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return nullptr;
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}
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auto buf = llvm::WritableMemoryBuffer::getNewUninitMemBuffer(out.size());
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std::memcpy(buf->getBufferStart(), out.data(), out.size());
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return buf;
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}
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if (fs::file cached{path, fs::read})
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{
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if (cached.size() == 0) [[unlikely]]
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{
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return nullptr;
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}
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auto buf = llvm::WritableMemoryBuffer::getNewUninitMemBuffer(cached.size());
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cached.read(buf->getBufferStart(), buf->getBufferSize());
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return buf;
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}
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return nullptr;
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}
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std::unique_ptr<llvm::MemoryBuffer> getObject(const llvm::Module* _module) override
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{
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std::string path = m_path;
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path.append(_module->getName().data());
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if (auto buf = load(path))
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{
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jit_log.notice("LLVM: Loaded module: %s", _module->getName().data());
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return buf;
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}
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return nullptr;
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}
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};
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std::string jit_compiler::cpu(const std::string& _cpu)
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{
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std::string m_cpu = _cpu;
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if (m_cpu.empty())
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{
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m_cpu = llvm::sys::getHostCPUName().str();
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if (m_cpu == "sandybridge" ||
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m_cpu == "ivybridge" ||
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m_cpu == "haswell" ||
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m_cpu == "broadwell" ||
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m_cpu == "skylake" ||
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m_cpu == "skylake-avx512" ||
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m_cpu == "cascadelake" ||
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m_cpu == "cooperlake" ||
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m_cpu == "cannonlake" ||
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m_cpu == "icelake" ||
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m_cpu == "icelake-client" ||
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m_cpu == "icelake-server" ||
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m_cpu == "tigerlake" ||
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m_cpu == "rocketlake" ||
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m_cpu == "alderlake" ||
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m_cpu == "raptorlake" ||
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m_cpu == "meteorlake")
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{
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// Downgrade if AVX is not supported by some chips
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if (!utils::has_avx())
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{
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m_cpu = "nehalem";
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}
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}
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if (m_cpu == "skylake-avx512" ||
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m_cpu == "cascadelake" ||
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m_cpu == "cooperlake" ||
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m_cpu == "cannonlake" ||
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m_cpu == "icelake" ||
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m_cpu == "icelake-client" ||
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m_cpu == "icelake-server" ||
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m_cpu == "tigerlake" ||
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m_cpu == "rocketlake")
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{
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// Downgrade if AVX-512 is disabled or not supported
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if (!utils::has_avx512())
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{
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m_cpu = "skylake";
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}
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}
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if (m_cpu == "znver1" && utils::has_clwb())
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{
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// Upgrade
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m_cpu = "znver2";
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}
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if ((m_cpu == "znver3" || m_cpu == "goldmont" || m_cpu == "alderlake" || m_cpu == "raptorlake" || m_cpu == "meteorlake") && utils::has_avx512_icl())
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{
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// Upgrade
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m_cpu = "icelake-client";
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}
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if (m_cpu == "goldmont" && utils::has_avx2())
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{
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// Upgrade
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m_cpu = "alderlake";
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}
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}
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return m_cpu;
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}
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std::string jit_compiler::triple1()
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{
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#if defined(_WIN32)
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return llvm::Triple::normalize(llvm::sys::getProcessTriple());
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#elif defined(__APPLE__) && defined(ARCH_X64)
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return llvm::Triple::normalize("x86_64-unknown-linux-gnu");
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#elif defined(__APPLE__) && defined(ARCH_ARM64)
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return llvm::Triple::normalize("aarch64-unknown-linux-gnu");
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#else
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return llvm::Triple::normalize(llvm::sys::getProcessTriple());
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#endif
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}
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std::string jit_compiler::triple2()
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{
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#if defined(_WIN32) && defined(ARCH_X64)
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return llvm::Triple::normalize("x86_64-unknown-linux-gnu");
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#elif defined(_WIN32) && defined(ARCH_ARM64)
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return llvm::Triple::normalize("aarch64-unknown-linux-gnu");
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#elif defined(__APPLE__) && defined(ARCH_X64)
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return llvm::Triple::normalize("x86_64-unknown-linux-gnu");
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#elif defined(__APPLE__) && defined(ARCH_ARM64)
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return llvm::Triple::normalize("aarch64-unknown-linux-gnu");
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#else
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return llvm::Triple::normalize(llvm::sys::getProcessTriple());
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#endif
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}
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bool jit_compiler::add_sub_disk_space(ssz space)
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{
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if (space >= 0)
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{
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ensure(m_disk_space.fetch_add(space) < ~static_cast<usz>(space));
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return true;
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}
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return m_disk_space.fetch_op([sub_size = static_cast<usz>(0 - space)](usz& val)
|
|
{
|
|
if (val >= sub_size)
|
|
{
|
|
val -= sub_size;
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}).second;
|
|
}
|
|
|
|
jit_compiler::jit_compiler(const std::unordered_map<std::string, u64>& _link, const std::string& _cpu, u32 flags)
|
|
: m_context(new llvm::LLVMContext)
|
|
, m_cpu(cpu(_cpu))
|
|
{
|
|
std::string result;
|
|
|
|
auto null_mod = std::make_unique<llvm::Module> ("null_", *m_context);
|
|
null_mod->setTargetTriple(jit_compiler::triple1());
|
|
|
|
std::unique_ptr<llvm::RTDyldMemoryManager> mem;
|
|
|
|
if (_link.empty())
|
|
{
|
|
// Auxiliary JIT (does not use custom memory manager, only writes the objects)
|
|
if (flags & 0x1)
|
|
{
|
|
mem = std::make_unique<MemoryManager1>();
|
|
}
|
|
else
|
|
{
|
|
mem = std::make_unique<MemoryManager2>();
|
|
null_mod->setTargetTriple(jit_compiler::triple2());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
mem = std::make_unique<MemoryManager1>();
|
|
}
|
|
|
|
{
|
|
m_engine.reset(llvm::EngineBuilder(std::move(null_mod))
|
|
.setErrorStr(&result)
|
|
.setEngineKind(llvm::EngineKind::JIT)
|
|
.setMCJITMemoryManager(std::move(mem))
|
|
#if LLVM_VERSION_MAJOR < 18
|
|
.setOptLevel(llvm::CodeGenOpt::Aggressive)
|
|
#else
|
|
.setOptLevel(llvm::CodeGenOptLevel::Aggressive)
|
|
#endif
|
|
.setCodeModel(flags & 0x2 ? llvm::CodeModel::Large : llvm::CodeModel::Small)
|
|
#ifdef __APPLE__
|
|
//.setCodeModel(llvm::CodeModel::Large)
|
|
#endif
|
|
.setRelocationModel(llvm::Reloc::Model::PIC_)
|
|
.setMCPU(m_cpu)
|
|
.create());
|
|
}
|
|
|
|
if (!_link.empty())
|
|
{
|
|
for (auto&& [name, addr] : _link)
|
|
{
|
|
m_engine->updateGlobalMapping(name, addr);
|
|
}
|
|
}
|
|
|
|
if (!_link.empty() || !(flags & 0x1))
|
|
{
|
|
m_engine->RegisterJITEventListener(llvm::JITEventListener::createIntelJITEventListener());
|
|
m_engine->RegisterJITEventListener(new JITAnnouncer);
|
|
}
|
|
|
|
if (!m_engine)
|
|
{
|
|
fmt::throw_exception("LLVM: Failed to create ExecutionEngine: %s", result);
|
|
}
|
|
|
|
fs::device_stat stats{};
|
|
|
|
if (fs::statfs(fs::get_cache_dir(), stats))
|
|
{
|
|
m_disk_space = stats.avail_free / 4;
|
|
}
|
|
}
|
|
|
|
jit_compiler::~jit_compiler()
|
|
{
|
|
}
|
|
|
|
void jit_compiler::add(std::unique_ptr<llvm::Module> _module, const std::string& path)
|
|
{
|
|
ObjectCache cache{path, this};
|
|
m_engine->setObjectCache(&cache);
|
|
|
|
const auto ptr = _module.get();
|
|
m_engine->addModule(std::move(_module));
|
|
m_engine->generateCodeForModule(ptr);
|
|
m_engine->setObjectCache(nullptr);
|
|
|
|
for (auto& func : ptr->functions())
|
|
{
|
|
// Delete IR to lower memory consumption
|
|
func.deleteBody();
|
|
}
|
|
}
|
|
|
|
void jit_compiler::add(std::unique_ptr<llvm::Module> _module)
|
|
{
|
|
const auto ptr = _module.get();
|
|
m_engine->addModule(std::move(_module));
|
|
m_engine->generateCodeForModule(ptr);
|
|
|
|
for (auto& func : ptr->functions())
|
|
{
|
|
// Delete IR to lower memory consumption
|
|
func.deleteBody();
|
|
}
|
|
}
|
|
|
|
bool jit_compiler::add(const std::string& path)
|
|
{
|
|
auto cache = ObjectCache::load(path);
|
|
|
|
if (!cache)
|
|
{
|
|
jit_log.error("ObjectCache: Failed to read file. (path='%s', error=%s)", path, fs::g_tls_error);
|
|
return false;
|
|
}
|
|
|
|
if (auto object_file = llvm::object::ObjectFile::createObjectFile(*cache))
|
|
{
|
|
m_engine->addObjectFile(llvm::object::OwningBinary<llvm::object::ObjectFile>(std::move(*object_file), std::move(cache)));
|
|
jit_log.trace("ObjectCache: Successfully added %s", path);
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
jit_log.error("ObjectCache: Adding failed: %s", path);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool jit_compiler::check(const std::string& path)
|
|
{
|
|
if (auto cache = ObjectCache::load(path))
|
|
{
|
|
if (auto object_file = llvm::object::ObjectFile::createObjectFile(*cache))
|
|
{
|
|
return true;
|
|
}
|
|
|
|
if (fs::remove_file(path))
|
|
{
|
|
jit_log.error("ObjectCache: Removed damaged file: %s", path);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void jit_compiler::update_global_mapping(const std::string& name, u64 addr)
|
|
{
|
|
m_engine->updateGlobalMapping(name, addr);
|
|
}
|
|
|
|
void jit_compiler::fin()
|
|
{
|
|
m_engine->finalizeObject();
|
|
}
|
|
|
|
u64 jit_compiler::get(const std::string& name)
|
|
{
|
|
return m_engine->getGlobalValueAddress(name);
|
|
}
|
|
|
|
#endif // LLVM_AVAILABLE
|