519 lines
19 KiB
C++
519 lines
19 KiB
C++
/* This file is part of the dynarmic project.
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* Copyright (c) 2018 MerryMage
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* SPDX-License-Identifier: 0BSD
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*/
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#include <algorithm>
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#include <cstring>
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#include <string>
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#include <vector>
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#include <catch2/catch_test_macros.hpp>
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#include <mcl/scope_exit.hpp>
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#include <mcl/stdint.hpp>
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#include "../fuzz_util.h"
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#include "../rand_int.h"
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#include "../unicorn_emu/a64_unicorn.h"
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#include "./testenv.h"
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#include "dynarmic/common/fp/fpcr.h"
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#include "dynarmic/common/fp/fpsr.h"
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#include "dynarmic/common/llvm_disassemble.h"
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#include "dynarmic/frontend/A64/a64_location_descriptor.h"
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#include "dynarmic/frontend/A64/a64_types.h"
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#include "dynarmic/frontend/A64/decoder/a64.h"
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#include "dynarmic/frontend/A64/translate/a64_translate.h"
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#include "dynarmic/ir/basic_block.h"
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#include "dynarmic/ir/opcodes.h"
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#include "dynarmic/ir/opt/passes.h"
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// Must be declared last for all necessary operator<< to be declared prior to this.
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#include <fmt/format.h>
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#include <fmt/ostream.h>
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using namespace Dynarmic;
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static bool ShouldTestInst(u32 instruction, u64 pc, bool is_last_inst) {
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const A64::LocationDescriptor location{pc, {}};
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IR::Block block{location};
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bool should_continue = A64::TranslateSingleInstruction(block, location, instruction);
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if (!should_continue && !is_last_inst)
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return false;
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if (auto terminal = block.GetTerminal(); boost::get<IR::Term::Interpret>(&terminal))
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return false;
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for (const auto& ir_inst : block) {
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switch (ir_inst.GetOpcode()) {
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case IR::Opcode::A64ExceptionRaised:
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case IR::Opcode::A64CallSupervisor:
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case IR::Opcode::A64DataCacheOperationRaised:
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case IR::Opcode::A64GetCNTPCT:
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return false;
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default:
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continue;
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}
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}
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return true;
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}
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static u32 GenRandomInst(u64 pc, bool is_last_inst) {
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static const struct InstructionGeneratorInfo {
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std::vector<InstructionGenerator> generators;
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std::vector<InstructionGenerator> invalid;
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} instructions = [] {
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const std::vector<std::tuple<std::string, const char*>> list{
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#define INST(fn, name, bitstring) {#fn, bitstring},
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#include "dynarmic/frontend/A64/decoder/a64.inc"
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#undef INST
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};
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std::vector<InstructionGenerator> generators;
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std::vector<InstructionGenerator> invalid;
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// List of instructions not to test
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const std::vector<std::string> do_not_test{
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// Unimplemented in QEMU
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"STLLR",
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// Unimplemented in QEMU
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"LDLAR",
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// Dynarmic and QEMU currently differ on how the exclusive monitor's address range works.
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"STXR",
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"STLXR",
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"STXP",
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"STLXP",
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"LDXR",
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"LDAXR",
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"LDXP",
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"LDAXP",
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// Behaviour differs from QEMU
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"MSR_reg",
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"MSR_imm",
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"MRS",
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};
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for (const auto& [fn, bitstring] : list) {
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if (fn == "UnallocatedEncoding") {
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continue;
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}
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if (std::find(do_not_test.begin(), do_not_test.end(), fn) != do_not_test.end()) {
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invalid.emplace_back(InstructionGenerator{bitstring});
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continue;
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}
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generators.emplace_back(InstructionGenerator{bitstring});
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}
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return InstructionGeneratorInfo{generators, invalid};
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}();
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while (true) {
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const size_t index = RandInt<size_t>(0, instructions.generators.size() - 1);
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const u32 inst = instructions.generators[index].Generate();
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if (std::any_of(instructions.invalid.begin(), instructions.invalid.end(), [inst](const auto& invalid) { return invalid.Match(inst); })) {
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continue;
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}
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if (ShouldTestInst(inst, pc, is_last_inst)) {
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return inst;
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}
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}
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}
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static u32 GenFloatInst(u64 pc, bool is_last_inst) {
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static const std::vector<InstructionGenerator> instruction_generators = [] {
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const std::vector<std::tuple<std::string, std::string, const char*>> list{
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#define INST(fn, name, bitstring) {#fn, #name, bitstring},
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#include "dynarmic/frontend/A64/decoder/a64.inc"
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#undef INST
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};
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// List of instructions not to test
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const std::vector<std::string> do_not_test{};
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std::vector<InstructionGenerator> result;
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for (const auto& [fn, name, bitstring] : list) {
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(void)name;
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if (fn[0] != 'F') {
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continue;
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} else if (std::find(do_not_test.begin(), do_not_test.end(), fn) != do_not_test.end()) {
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continue;
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}
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result.emplace_back(InstructionGenerator{bitstring});
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}
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return result;
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}();
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while (true) {
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const size_t index = RandInt<size_t>(0, instruction_generators.size() - 1);
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const u32 instruction = instruction_generators[index].Generate();
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if (ShouldTestInst(instruction, pc, is_last_inst)) {
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return instruction;
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}
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}
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}
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static Dynarmic::A64::UserConfig GetUserConfig(A64TestEnv& jit_env) {
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Dynarmic::A64::UserConfig jit_user_config{&jit_env};
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jit_user_config.optimizations &= ~OptimizationFlag::FastDispatch;
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// The below corresponds to the settings for qemu's aarch64_max_initfn
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jit_user_config.dczid_el0 = 7;
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jit_user_config.ctr_el0 = 0x80038003;
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return jit_user_config;
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}
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static void RunTestInstance(Dynarmic::A64::Jit& jit, A64Unicorn& uni, A64TestEnv& jit_env, A64TestEnv& uni_env, const A64Unicorn::RegisterArray& regs, const A64Unicorn::VectorArray& vecs, const size_t instructions_start, const std::vector<u32>& instructions, const u32 pstate, const u32 fpcr) {
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jit_env.code_mem = instructions;
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uni_env.code_mem = instructions;
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jit_env.code_mem.emplace_back(0x14000000); // B .
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uni_env.code_mem.emplace_back(0x14000000); // B .
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jit_env.code_mem_start_address = instructions_start;
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uni_env.code_mem_start_address = instructions_start;
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jit_env.modified_memory.clear();
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uni_env.modified_memory.clear();
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jit_env.interrupts.clear();
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uni_env.interrupts.clear();
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const u64 initial_sp = RandInt<u64>(0x30'0000'0000, 0x40'0000'0000) * 4;
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jit.SetRegisters(regs);
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jit.SetVectors(vecs);
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jit.SetPC(instructions_start);
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jit.SetSP(initial_sp);
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jit.SetFpcr(fpcr);
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jit.SetFpsr(0);
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jit.SetPstate(pstate);
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jit.ClearCache();
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uni.SetRegisters(regs);
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uni.SetVectors(vecs);
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uni.SetPC(instructions_start);
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uni.SetSP(initial_sp);
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uni.SetFpcr(fpcr);
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uni.SetFpsr(0);
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uni.SetPstate(pstate);
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uni.ClearPageCache();
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jit_env.ticks_left = instructions.size();
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jit.Run();
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uni_env.ticks_left = instructions.size();
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uni.Run();
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SCOPE_FAIL {
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fmt::print("Instruction Listing:\n");
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for (u32 instruction : instructions) {
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fmt::print("{:08x} {}\n", instruction, Common::DisassembleAArch64(instruction));
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}
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fmt::print("\n");
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fmt::print("Initial register listing:\n");
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for (size_t i = 0; i < regs.size(); ++i) {
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fmt::print("{:3s}: {:016x}\n", A64::RegToString(static_cast<A64::Reg>(i)), regs[i]);
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}
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for (size_t i = 0; i < vecs.size(); ++i) {
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fmt::print("{:3s}: {:016x}{:016x}\n", A64::VecToString(static_cast<A64::Vec>(i)), vecs[i][1], vecs[i][0]);
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}
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fmt::print("sp : {:016x}\n", initial_sp);
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fmt::print("pc : {:016x}\n", instructions_start);
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fmt::print("p : {:08x}\n", pstate);
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fmt::print("fpcr {:08x}\n", fpcr);
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fmt::print("fpcr.AHP {}\n", FP::FPCR{fpcr}.AHP());
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fmt::print("fpcr.DN {}\n", FP::FPCR{fpcr}.DN());
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fmt::print("fpcr.FZ {}\n", FP::FPCR{fpcr}.FZ());
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fmt::print("fpcr.RMode {}\n", static_cast<size_t>(FP::FPCR{fpcr}.RMode()));
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fmt::print("fpcr.FZ16 {}\n", FP::FPCR{fpcr}.FZ16());
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fmt::print("\n");
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fmt::print("Final register listing:\n");
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fmt::print(" unicorn dynarmic\n");
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const auto uni_regs = uni.GetRegisters();
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for (size_t i = 0; i < regs.size(); ++i) {
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fmt::print("{:3s}: {:016x} {:016x} {}\n", A64::RegToString(static_cast<A64::Reg>(i)), uni_regs[i], jit.GetRegisters()[i], uni_regs[i] != jit.GetRegisters()[i] ? "*" : "");
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}
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const auto uni_vecs = uni.GetVectors();
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for (size_t i = 0; i < vecs.size(); ++i) {
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fmt::print("{:3s}: {:016x}{:016x} {:016x}{:016x} {}\n", A64::VecToString(static_cast<A64::Vec>(i)),
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uni_vecs[i][1], uni_vecs[i][0],
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jit.GetVectors()[i][1], jit.GetVectors()[i][0],
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uni_vecs[i] != jit.GetVectors()[i] ? "*" : "");
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}
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fmt::print("sp : {:016x} {:016x} {}\n", uni.GetSP(), jit.GetSP(), uni.GetSP() != jit.GetSP() ? "*" : "");
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fmt::print("pc : {:016x} {:016x} {}\n", uni.GetPC(), jit.GetPC(), uni.GetPC() != jit.GetPC() ? "*" : "");
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fmt::print("p : {:08x} {:08x} {}\n", uni.GetPstate(), jit.GetPstate(), (uni.GetPstate() & 0xF0000000) != (jit.GetPstate() & 0xF0000000) ? "*" : "");
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fmt::print("qc : {:08x} {:08x} {}\n", uni.GetFpsr(), jit.GetFpsr(), FP::FPSR{uni.GetFpsr()}.QC() != FP::FPSR{jit.GetFpsr()}.QC() ? "*" : "");
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fmt::print("\n");
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fmt::print("Modified memory:\n");
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fmt::print(" uni dyn\n");
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auto uni_iter = uni_env.modified_memory.begin();
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auto jit_iter = jit_env.modified_memory.begin();
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while (uni_iter != uni_env.modified_memory.end() || jit_iter != jit_env.modified_memory.end()) {
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if (uni_iter == uni_env.modified_memory.end() || (jit_iter != jit_env.modified_memory.end() && uni_iter->first > jit_iter->first)) {
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fmt::print("{:016x}: {:02x} *\n", jit_iter->first, jit_iter->second);
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jit_iter++;
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} else if (jit_iter == jit_env.modified_memory.end() || jit_iter->first > uni_iter->first) {
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fmt::print("{:016x}: {:02x} *\n", uni_iter->first, uni_iter->second);
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uni_iter++;
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} else if (uni_iter->first == jit_iter->first) {
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fmt::print("{:016x}: {:02x} {:02x} {}\n", uni_iter->first, uni_iter->second, jit_iter->second, uni_iter->second != jit_iter->second ? "*" : "");
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uni_iter++;
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jit_iter++;
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}
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}
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fmt::print("\n");
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const auto get_code = [&jit_env](u64 vaddr) { return jit_env.MemoryReadCode(vaddr); };
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IR::Block ir_block = A64::Translate({instructions_start, FP::FPCR{fpcr}}, get_code, {});
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Optimization::A64CallbackConfigPass(ir_block, GetUserConfig(jit_env));
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Optimization::NamingPass(ir_block);
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fmt::print("IR:\n");
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fmt::print("{}\n", IR::DumpBlock(ir_block));
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Optimization::A64GetSetElimination(ir_block);
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Optimization::DeadCodeElimination(ir_block);
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Optimization::ConstantPropagation(ir_block);
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Optimization::DeadCodeElimination(ir_block);
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fmt::print("Optimized IR:\n");
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fmt::print("{}\n", IR::DumpBlock(ir_block));
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fmt::print("x86_64:\n");
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jit.DumpDisassembly();
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fmt::print("Interrupts:\n");
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for (auto& i : uni_env.interrupts) {
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puts(i.c_str());
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}
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};
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REQUIRE(uni_env.code_mem_modified_by_guest == jit_env.code_mem_modified_by_guest);
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if (uni_env.code_mem_modified_by_guest) {
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return;
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}
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REQUIRE(uni.GetPC() == jit.GetPC());
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REQUIRE(uni.GetRegisters() == jit.GetRegisters());
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REQUIRE(uni.GetVectors() == jit.GetVectors());
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REQUIRE(uni.GetSP() == jit.GetSP());
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REQUIRE((uni.GetPstate() & 0xF0000000) == (jit.GetPstate() & 0xF0000000));
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REQUIRE(uni_env.modified_memory == jit_env.modified_memory);
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REQUIRE(uni_env.interrupts.empty());
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REQUIRE(FP::FPSR{uni.GetFpsr()}.QC() == FP::FPSR{jit.GetFpsr()}.QC());
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}
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TEST_CASE("A64: Single random instruction", "[a64]") {
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A64TestEnv jit_env{};
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A64TestEnv uni_env{};
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Dynarmic::A64::Jit jit{GetUserConfig(jit_env)};
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A64Unicorn uni{uni_env};
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A64Unicorn::RegisterArray regs;
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A64Unicorn::VectorArray vecs;
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std::vector<u32> instructions(1);
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for (size_t iteration = 0; iteration < 100000; ++iteration) {
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std::generate(regs.begin(), regs.end(), [] { return RandInt<u64>(0, ~u64(0)); });
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std::generate(vecs.begin(), vecs.end(), RandomVector);
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instructions[0] = GenRandomInst(0, true);
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const u64 start_address = RandInt<u64>(0, 0x10'0000'0000) * 4;
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const u32 pstate = RandInt<u32>(0, 0xF) << 28;
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const u32 fpcr = RandomFpcr();
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INFO("Instruction: 0x" << std::hex << instructions[0]);
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RunTestInstance(jit, uni, jit_env, uni_env, regs, vecs, start_address, instructions, pstate, fpcr);
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}
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}
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TEST_CASE("A64: Floating point instructions", "[a64]") {
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A64TestEnv jit_env{};
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A64TestEnv uni_env{};
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Dynarmic::A64::Jit jit{GetUserConfig(jit_env)};
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A64Unicorn uni{uni_env};
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static constexpr std::array<u64, 80> float_numbers{
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0x00000000, // positive zero
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0x00000001, // smallest positive denormal
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0x00000076, //
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0x00002b94, //
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0x00636d24, //
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0x007fffff, // largest positive denormal
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0x00800000, // smallest positive normalised real
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0x00800002, //
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0x01398437, //
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0x0ba98d27, //
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0x0ba98d7a, //
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0x751f853a, //
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0x7f7ffff0, //
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0x7f7fffff, // largest positive normalised real
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0x7f800000, // positive infinity
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0x7f800001, // first positive SNaN
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0x7f984a37, //
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0x7fbfffff, // last positive SNaN
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0x7fc00000, // first positive QNaN
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0x7fd9ba98, //
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0x7fffffff, // last positive QNaN
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0x80000000, // negative zero
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0x80000001, // smallest negative denormal
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0x80000076, //
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0x80002b94, //
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0x80636d24, //
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0x807fffff, // largest negative denormal
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0x80800000, // smallest negative normalised real
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0x80800002, //
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0x81398437, //
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0x8ba98d27, //
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0x8ba98d7a, //
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0xf51f853a, //
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0xff7ffff0, //
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0xff7fffff, // largest negative normalised real
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0xff800000, // negative infinity
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0xff800001, // first negative SNaN
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0xff984a37, //
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0xffbfffff, // last negative SNaN
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0xffc00000, // first negative QNaN
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0xffd9ba98, //
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0xffffffff, // last negative QNaN
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// some random numbers follow
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0x4f3495cb,
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0xe73a5134,
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0x7c994e9e,
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0x6164bd6c,
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0x09503366,
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0xbf5a97c9,
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0xe6ff1a14,
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0x77f31e2f,
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0xaab4d7d8,
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0x0966320b,
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0xb26bddee,
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0xb5c8e5d3,
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0x317285d3,
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0x3c9623b1,
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0x51fd2c7c,
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0x7b906a6c,
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0x3f800000,
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0x3dcccccd,
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0x3f000000,
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0x42280000,
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0x3eaaaaab,
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0xc1200000,
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0xbf800000,
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0xbf8147ae,
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0x3f8147ae,
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0x415df525,
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0xc79b271e,
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0x460e8c84,
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// some 64-bit-float upper-halves
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0x7ff00000, // +SNaN / +Inf
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0x7ff0abcd, // +SNaN
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0x7ff80000, // +QNaN
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0x7ff81234, // +QNaN
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0xfff00000, // -SNaN / -Inf
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0xfff05678, // -SNaN
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0xfff80000, // -QNaN
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0xfff809ef, // -QNaN
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0x3ff00000, // Number near +1.0
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0xbff00000, // Number near -1.0
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};
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const auto gen_float = [&] {
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if (RandInt<size_t>(0, 1) == 0) {
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return RandInt<u64>(0, 0xffffffff);
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}
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return float_numbers[RandInt<size_t>(0, float_numbers.size() - 1)];
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};
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const auto gen_vector = [&] {
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u64 upper = (gen_float() << 32) | gen_float();
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u64 lower = (gen_float() << 32) | gen_float();
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return Vector{lower, upper};
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};
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A64Unicorn::RegisterArray regs;
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A64Unicorn::VectorArray vecs;
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std::vector<u32> instructions(1);
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|
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for (size_t iteration = 0; iteration < 100000; ++iteration) {
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std::generate(regs.begin(), regs.end(), gen_float);
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std::generate(vecs.begin(), vecs.end(), gen_vector);
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instructions[0] = GenFloatInst(0, true);
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const u64 start_address = RandInt<u64>(0, 0x10'0000'0000) * 4;
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const u32 pstate = RandInt<u32>(0, 0xF) << 28;
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const u32 fpcr = RandomFpcr();
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|
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INFO("Instruction: 0x" << std::hex << instructions[0]);
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|
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RunTestInstance(jit, uni, jit_env, uni_env, regs, vecs, start_address, instructions, pstate, fpcr);
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}
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|
}
|
|
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TEST_CASE("A64: Small random block", "[a64]") {
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A64TestEnv jit_env{};
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|
A64TestEnv uni_env{};
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|
|
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Dynarmic::A64::Jit jit{GetUserConfig(jit_env)};
|
|
A64Unicorn uni{uni_env};
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|
|
|
A64Unicorn::RegisterArray regs;
|
|
A64Unicorn::VectorArray vecs;
|
|
std::vector<u32> instructions(5);
|
|
|
|
for (size_t iteration = 0; iteration < 100000; ++iteration) {
|
|
std::generate(regs.begin(), regs.end(), [] { return RandInt<u64>(0, ~u64(0)); });
|
|
std::generate(vecs.begin(), vecs.end(), RandomVector);
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|
|
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instructions[0] = GenRandomInst(0, false);
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instructions[1] = GenRandomInst(4, false);
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|
instructions[2] = GenRandomInst(8, false);
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|
instructions[3] = GenRandomInst(12, false);
|
|
instructions[4] = GenRandomInst(16, true);
|
|
|
|
const u64 start_address = RandInt<u64>(0, 0x10'0000'0000) * 4;
|
|
const u32 pstate = RandInt<u32>(0, 0xF) << 28;
|
|
const u32 fpcr = RandomFpcr();
|
|
|
|
INFO("Instruction 1: 0x" << std::hex << instructions[0]);
|
|
INFO("Instruction 2: 0x" << std::hex << instructions[1]);
|
|
INFO("Instruction 3: 0x" << std::hex << instructions[2]);
|
|
INFO("Instruction 4: 0x" << std::hex << instructions[3]);
|
|
INFO("Instruction 5: 0x" << std::hex << instructions[4]);
|
|
|
|
RunTestInstance(jit, uni, jit_env, uni_env, regs, vecs, start_address, instructions, pstate, fpcr);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("A64: Large random block", "[a64]") {
|
|
A64TestEnv jit_env{};
|
|
A64TestEnv uni_env{};
|
|
|
|
Dynarmic::A64::Jit jit{GetUserConfig(jit_env)};
|
|
A64Unicorn uni{uni_env};
|
|
|
|
A64Unicorn::RegisterArray regs;
|
|
A64Unicorn::VectorArray vecs;
|
|
|
|
constexpr size_t instruction_count = 100;
|
|
std::vector<u32> instructions(instruction_count);
|
|
|
|
for (size_t iteration = 0; iteration < 500; ++iteration) {
|
|
std::generate(regs.begin(), regs.end(), [] { return RandInt<u64>(0, ~u64(0)); });
|
|
std::generate(vecs.begin(), vecs.end(), RandomVector);
|
|
|
|
for (size_t j = 0; j < instruction_count; ++j) {
|
|
instructions[j] = GenRandomInst(j * 4, j == instruction_count - 1);
|
|
}
|
|
|
|
const u64 start_address = RandInt<u64>(0, 0x10'0000'0000) * 4;
|
|
const u32 pstate = RandInt<u32>(0, 0xF) << 28;
|
|
const u32 fpcr = RandomFpcr();
|
|
|
|
RunTestInstance(jit, uni, jit_env, uni_env, regs, vecs, start_address, instructions, pstate, fpcr);
|
|
}
|
|
}
|