116 lines
3.4 KiB
C++
116 lines
3.4 KiB
C++
//===- llvm/unittest/DebugInfo/DWARFExpressionCompactPrinterTest.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/ADT/ArrayRef.h"
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#include "llvm/DebugInfo/DWARF/DWARFContext.h"
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#include "llvm/DebugInfo/DWARF/DWARFDie.h"
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#include "llvm/DebugInfo/DWARF/DWARFExpression.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/Support/DataExtractor.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Testing/Support/Error.h"
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#include "gtest/gtest.h"
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#include "DwarfGenerator.h"
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using namespace llvm;
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using namespace dwarf;
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namespace {
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class DWARFExpressionCompactPrinterTest : public ::testing::Test {
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public:
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std::unique_ptr<MCRegisterInfo> MRI;
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DWARFExpressionCompactPrinterTest() {
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InitializeAllTargets();
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InitializeAllTargetMCs();
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InitializeAllAsmPrinters();
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std::string TripleName = "armv8a-linux-gnueabi";
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std::string ErrorStr;
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const Target *TheTarget =
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TargetRegistry::lookupTarget(TripleName, ErrorStr);
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if (!TheTarget)
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return;
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MRI.reset(TheTarget->createMCRegInfo(TripleName));
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}
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void TestExprPrinter(ArrayRef<uint8_t> ExprData, StringRef Expected);
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};
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} // namespace
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void DWARFExpressionCompactPrinterTest::TestExprPrinter(
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ArrayRef<uint8_t> ExprData, StringRef Expected) {
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// If we didn't build ARM, do not run the test.
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if (!MRI)
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return;
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// Print the expression, passing in the subprogram DIE, and check that the
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// result is as expected.
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std::string Result;
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raw_string_ostream OS(Result);
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DataExtractor DE(ExprData, true, 8);
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DWARFExpression Expr(DE, 8);
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Expr.printCompact(OS, *MRI);
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EXPECT_EQ(OS.str(), Expected);
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_reg0) {
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TestExprPrinter({DW_OP_reg0}, "R0");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_reg10) {
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TestExprPrinter({DW_OP_reg10}, "R10");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_regx) {
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TestExprPrinter({DW_OP_regx, 0x80, 0x02}, "D0");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_breg0) {
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TestExprPrinter({DW_OP_breg0, 0x04}, "[R0+4]");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_breg0_large_offset) {
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TestExprPrinter({DW_OP_breg0, 0x80, 0x02}, "[R0+256]");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_breg13) {
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TestExprPrinter({DW_OP_breg13, 0x10}, "[SP+16]");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_breg13_zero_offset) {
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TestExprPrinter({DW_OP_breg13, 0x00}, "[SP]");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_breg0_negative) {
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TestExprPrinter({DW_OP_breg0, 0x70}, "[R0-16]");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_bregx) {
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TestExprPrinter({DW_OP_bregx, 0x0d, 0x28}, "[SP+40]");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_stack_value) {
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TestExprPrinter({DW_OP_breg13, 0x04, DW_OP_stack_value}, "SP+4");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_entry_value) {
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TestExprPrinter({DW_OP_entry_value, 0x01, DW_OP_reg0, DW_OP_stack_value},
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"entry(R0)");
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}
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TEST_F(DWARFExpressionCompactPrinterTest, Test_OP_entry_value_mem) {
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TestExprPrinter(
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{DW_OP_entry_value, 0x02, DW_OP_breg13, 0x10, DW_OP_stack_value},
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"entry([SP+16])");
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}
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