161 lines
3.5 KiB
C++
161 lines
3.5 KiB
C++
// SPDX-FileCopyrightText: Copyright (c) 2022 merryhime <https://mary.rs>
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// SPDX-License-Identifier: MIT
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#include <cstdint>
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#include <cstdio>
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#include <catch2/catch_test_macros.hpp>
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#include "oaknut/code_block.hpp"
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#include "oaknut/oaknut.hpp"
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#include "rand_int.hpp"
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using namespace oaknut;
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using namespace oaknut::util;
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TEST_CASE("Basic Test")
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{
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CodeBlock mem{4096};
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CodeGenerator code{mem.ptr()};
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mem.unprotect();
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code.MOV(W0, 42);
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code.RET();
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mem.protect();
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mem.invalidate_all();
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int result = ((int (*)())mem.ptr())();
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REQUIRE(result == 42);
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}
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TEST_CASE("Fibonacci")
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{
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CodeBlock mem{4096};
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CodeGenerator code{mem.ptr()};
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mem.unprotect();
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auto fib = code.ptr<int (*)(int)>();
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Label start, end, zero, recurse;
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code.l(start);
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code.STP(X29, X30, SP, PRE_INDEXED, -32);
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code.STP(X20, X19, SP, 16);
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code.MOV(X29, SP);
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code.MOV(W19, W0);
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code.SUBS(W0, W0, 1);
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code.B(LT, zero);
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code.B(NE, recurse);
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code.MOV(W0, 1);
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code.B(end);
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code.l(zero);
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code.MOV(W0, WZR);
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code.B(end);
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code.l(recurse);
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code.BL(start);
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code.MOV(W20, W0);
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code.SUB(W0, W19, 2);
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code.BL(start);
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code.ADD(W0, W0, W20);
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code.l(end);
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code.LDP(X20, X19, SP, 16);
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code.LDP(X29, X30, SP, POST_INDEXED, 32);
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code.RET();
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mem.protect();
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mem.invalidate_all();
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REQUIRE(fib(0) == 0);
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REQUIRE(fib(1) == 1);
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REQUIRE(fib(5) == 5);
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REQUIRE(fib(9) == 34);
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}
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TEST_CASE("Immediate generation (32-bit)")
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{
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CodeBlock mem{4096};
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for (int i = 0; i < 0x100000; i++) {
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const std::uint32_t value = RandInt<std::uint32_t>(0, 0xffffffff);
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CodeGenerator code{mem.ptr()};
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auto f = code.ptr<std::uint64_t (*)()>();
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mem.unprotect();
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code.MOV(W0, value);
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code.RET();
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mem.protect();
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mem.invalidate_all();
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REQUIRE(f() == value);
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}
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}
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TEST_CASE("Immediate generation (64-bit)")
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{
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CodeBlock mem{4096};
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for (int i = 0; i < 0x100000; i++) {
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const std::uint64_t value = RandInt<std::uint64_t>(0, 0xffffffff'ffffffff);
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CodeGenerator code{mem.ptr()};
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auto f = code.ptr<std::uint64_t (*)()>();
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mem.unprotect();
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code.MOV(X0, value);
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code.RET();
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mem.protect();
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mem.invalidate_all();
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REQUIRE(f() == value);
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}
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}
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TEST_CASE("ADR")
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{
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CodeBlock mem{4096};
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for (std::int64_t i = -1048576; i < 1048576; i++) {
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const std::intptr_t value = reinterpret_cast<std::intptr_t>(mem.ptr()) + i;
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CodeGenerator code{mem.ptr()};
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auto f = code.ptr<std::intptr_t (*)()>();
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mem.unprotect();
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code.ADR(X0, reinterpret_cast<void*>(value));
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code.RET();
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mem.protect();
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mem.invalidate_all();
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INFO(i);
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REQUIRE(f() == value);
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}
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}
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TEST_CASE("ADRP")
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{
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CodeBlock mem{4096};
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for (int i = 0; i < 0x200000; i++) {
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const std::int64_t diff = RandInt<std::int64_t>(-4294967296, 4294967295);
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const std::intptr_t value = reinterpret_cast<std::intptr_t>(mem.ptr()) + diff;
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const std::uint64_t expect = static_cast<std::uint64_t>(value) & ~static_cast<std::uint64_t>(0xfff);
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CodeGenerator code{mem.ptr()};
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auto f = code.ptr<std::uint64_t (*)()>();
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mem.unprotect();
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code.ADRP(X0, reinterpret_cast<void*>(value));
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code.RET();
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mem.protect();
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mem.invalidate_all();
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INFO(i);
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REQUIRE(f() == expect);
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}
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}
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