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// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
/* This file is part of the dynarmic project.
* Copyright (c) 2018 MerryMage
* SPDX-License-Identifier: 0BSD
*/
#include "./fuzz_util.h"
#include <cstring>
#include <fmt/format.h>
#include <fmt/ostream.h>
#include "dynarmic/common/assert.h"
#include "./rand_int.h"
#include "dynarmic/common/fp/fpcr.h"
#include "dynarmic/common/fp/rounding_mode.h"
using namespace Dynarmic;
std::ostream& operator<<(std::ostream& o, Vector vec) {
return o << fmt::format("{:016x}'{:016x}", vec[1], vec[0]);
}
Vector RandomVector() {
return {RandInt<u64>(0, ~u64(0)), RandInt<u64>(0, ~u64(0))};
}
u32 RandomFpcr() {
FP::FPCR fpcr;
fpcr.AHP(RandInt(0, 1) == 0);
fpcr.DN(RandInt(0, 1) == 0);
fpcr.FZ(RandInt(0, 1) == 0);
fpcr.RMode(static_cast<FP::RoundingMode>(RandInt(0, 3)));
fpcr.FZ16(RandInt(0, 1) == 0);
return fpcr.Value();
}
InstructionGenerator::InstructionGenerator(const char* format) {
const size_t format_len = std::strlen(format);
ASSERT(format_len == 16 || format_len == 32);
if (format_len == 16) {
// Begin with 16 zeros
mask |= 0xFFFF0000;
}
for (size_t i = 0; i < format_len; i++) {
const u32 bit = 1u << (format_len - i - 1);
switch (format[i]) {
case '0':
mask |= bit;
break;
case '1':
bits |= bit;
mask |= bit;
break;
default:
// Do nothing
break;
}
}
}
u32 InstructionGenerator::Generate() const {
const u32 random = RandInt<u32>(0, 0xFFFFFFFF);
return bits | (random & ~mask);
}
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