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71 lines
2.4 KiB
71 lines
2.4 KiB
4 months ago
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//===----- unittests/RISCVAttributeParserTest.cpp -------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/RISCVAttributeParser.h"
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#include "llvm/Support/ARMBuildAttributes.h"
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#include "llvm/Support/ELFAttributes.h"
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#include "gtest/gtest.h"
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#include <string>
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using namespace llvm;
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struct RISCVAttributeSection {
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unsigned Tag;
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unsigned Value;
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RISCVAttributeSection(unsigned tag, unsigned value)
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: Tag(tag), Value(value) {}
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void write(raw_ostream &OS) {
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OS.flush();
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// length = length + "riscv\0" + TagFile + ByteSize + Tag + Value;
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// length = 17 bytes
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OS << 'A' << (uint8_t)17 << (uint8_t)0 << (uint8_t)0 << (uint8_t)0;
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OS << "riscv" << '\0';
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OS << (uint8_t)1 << (uint8_t)7 << (uint8_t)0 << (uint8_t)0 << (uint8_t)0;
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OS << (uint8_t)Tag << (uint8_t)Value;
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}
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};
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static bool testAttribute(unsigned Tag, unsigned Value, unsigned ExpectedTag,
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unsigned ExpectedValue) {
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std::string buffer;
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raw_string_ostream OS(buffer);
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RISCVAttributeSection Section(Tag, Value);
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Section.write(OS);
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ArrayRef<uint8_t> Bytes(reinterpret_cast<const uint8_t *>(OS.str().c_str()),
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OS.str().size());
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RISCVAttributeParser Parser;
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cantFail(Parser.parse(Bytes, support::little));
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Optional<unsigned> Attr = Parser.getAttributeValue(ExpectedTag);
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return Attr.hasValue() && Attr.getValue() == ExpectedValue;
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}
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static bool testTagString(unsigned Tag, const char *name) {
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return ELFAttrs::attrTypeAsString(Tag, RISCVAttrs::RISCVAttributeTags)
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.str() == name;
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}
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TEST(StackAlign, testAttribute) {
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EXPECT_TRUE(testTagString(4, "Tag_stack_align"));
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EXPECT_TRUE(
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testAttribute(4, 4, RISCVAttrs::STACK_ALIGN, RISCVAttrs::ALIGN_4));
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EXPECT_TRUE(
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testAttribute(4, 16, RISCVAttrs::STACK_ALIGN, RISCVAttrs::ALIGN_16));
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}
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TEST(UnalignedAccess, testAttribute) {
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EXPECT_TRUE(testTagString(6, "Tag_unaligned_access"));
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EXPECT_TRUE(testAttribute(6, 0, RISCVAttrs::UNALIGNED_ACCESS,
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RISCVAttrs::NOT_ALLOWED));
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EXPECT_TRUE(
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testAttribute(6, 1, RISCVAttrs::UNALIGNED_ACCESS, RISCVAttrs::ALLOWED));
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}
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