| 1 | //===----- unittests/RISCVAttributeParserTest.cpp -------------------------===// |
|---|
| 2 | // |
|---|
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
|---|
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
|---|
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
|---|
| 6 | // |
|---|
| 7 | //===----------------------------------------------------------------------===// |
|---|
| 8 | #include "llvm/Support/RISCVAttributeParser.h" |
|---|
| 9 | #include "llvm/Support/ARMBuildAttributes.h" |
|---|
| 10 | #include "llvm/Support/ELFAttributes.h" |
|---|
| 11 | #include "gtest/gtest.h" |
|---|
| 12 | #include <string> |
|---|
| 13 | |
|---|
| 14 | using namespace llvm; |
|---|
| 15 | |
|---|
| 16 | struct RISCVAttributeSection { |
|---|
| 17 | unsigned Tag; |
|---|
| 18 | unsigned Value; |
|---|
| 19 | |
|---|
| 20 | RISCVAttributeSection(unsigned tag, unsigned value) |
|---|
| 21 | : Tag(tag), Value(value) {} |
|---|
| 22 | |
|---|
| 23 | void write(raw_ostream &OS) { |
|---|
| 24 | OS.flush(); |
|---|
| 25 | // length = length + "riscv\0" + TagFile + ByteSize + Tag + Value; |
|---|
| 26 | // length = 17 bytes |
|---|
| 27 | |
|---|
| 28 | OS << 'A' << (uint8_t)17 << (uint8_t)0 << (uint8_t)0 << (uint8_t)0; |
|---|
| 29 | OS << "riscv" << '\0'; |
|---|
| 30 | OS << (uint8_t)1 << (uint8_t)7 << (uint8_t)0 << (uint8_t)0 << (uint8_t)0; |
|---|
| 31 | OS << (uint8_t)Tag << (uint8_t)Value; |
|---|
| 32 | } |
|---|
| 33 | }; |
|---|
| 34 | |
|---|
| 35 | static bool testAttribute(unsigned Tag, unsigned Value, unsigned ExpectedTag, |
|---|
| 36 | unsigned ExpectedValue) { |
|---|
| 37 | std::string buffer; |
|---|
| 38 | raw_string_ostream OS(buffer); |
|---|
| 39 | RISCVAttributeSection Section(Tag, Value); |
|---|
| 40 | Section.write(OS); |
|---|
| 41 | ArrayRef<uint8_t> Bytes(reinterpret_cast<const uint8_t *>(OS.str().c_str()), |
|---|
| 42 | OS.str().size()); |
|---|
| 43 | |
|---|
| 44 | RISCVAttributeParser Parser; |
|---|
| 45 | cantFail(Err: Parser.parse(section: Bytes, endian: llvm::endianness::little)); |
|---|
| 46 | |
|---|
| 47 | std::optional<unsigned> Attr = Parser.getAttributeValue(tag: ExpectedTag); |
|---|
| 48 | return Attr && *Attr == ExpectedValue; |
|---|
| 49 | } |
|---|
| 50 | |
|---|
| 51 | static bool testTagString(unsigned Tag, const char *name) { |
|---|
| 52 | return ELFAttrs::attrTypeAsString(attr: Tag, tagNameMap: RISCVAttrs::getRISCVAttributeTags()) |
|---|
| 53 | .str() == name; |
|---|
| 54 | } |
|---|
| 55 | |
|---|
| 56 | TEST(StackAlign, testAttribute) { |
|---|
| 57 | EXPECT_TRUE(testTagString(4, "Tag_stack_align" )); |
|---|
| 58 | EXPECT_TRUE(testAttribute(4, 4, RISCVAttrs::STACK_ALIGN, 4)); |
|---|
| 59 | EXPECT_TRUE(testAttribute(4, 16, RISCVAttrs::STACK_ALIGN, 16)); |
|---|
| 60 | } |
|---|
| 61 | |
|---|
| 62 | TEST(UnalignedAccess, testAttribute) { |
|---|
| 63 | EXPECT_TRUE(testTagString(6, "Tag_unaligned_access" )); |
|---|
| 64 | EXPECT_TRUE(testAttribute(6, 0, RISCVAttrs::UNALIGNED_ACCESS, |
|---|
| 65 | RISCVAttrs::NOT_ALLOWED)); |
|---|
| 66 | EXPECT_TRUE( |
|---|
| 67 | testAttribute(6, 1, RISCVAttrs::UNALIGNED_ACCESS, RISCVAttrs::ALLOWED)); |
|---|
| 68 | } |
|---|
| 69 | |
|---|
