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1 //===- llvm/unittest/DebugInfo/DWARFFormValueTest.cpp ---------------------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #include "llvm/DebugInfo/DWARF/DWARFFormValue.h"
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11 #include "llvm/Support/Dwarf.h"
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12 #include "gtest/gtest.h"
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13 using namespace llvm;
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14 using namespace dwarf;
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15
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16 namespace {
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17
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18 TEST(DWARFFormValue, FixedFormSizes) {
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19 // Size of DW_FORM_addr and DW_FORM_ref_addr are equal in DWARF2,
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20 // DW_FORM_ref_addr is always 4 bytes in DWARF32 starting from DWARF3.
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21 ArrayRef<uint8_t> sizes = DWARFFormValue::getFixedFormSizes(4, 2);
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22 EXPECT_EQ(sizes[DW_FORM_addr], sizes[DW_FORM_ref_addr]);
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23 sizes = DWARFFormValue::getFixedFormSizes(8, 2);
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24 EXPECT_EQ(sizes[DW_FORM_addr], sizes[DW_FORM_ref_addr]);
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25 sizes = DWARFFormValue::getFixedFormSizes(8, 3);
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26 EXPECT_EQ(4, sizes[DW_FORM_ref_addr]);
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27 // Check that we don't have fixed form sizes for weird address sizes.
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28 EXPECT_EQ(0U, DWARFFormValue::getFixedFormSizes(16, 2).size());
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29 }
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30
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31 bool isFormClass(uint16_t Form, DWARFFormValue::FormClass FC) {
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32 return DWARFFormValue(Form).isFormClass(FC);
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33 }
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34
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35 TEST(DWARFFormValue, FormClass) {
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36 EXPECT_TRUE(isFormClass(DW_FORM_addr, DWARFFormValue::FC_Address));
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37 EXPECT_FALSE(isFormClass(DW_FORM_data8, DWARFFormValue::FC_Address));
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38 EXPECT_TRUE(isFormClass(DW_FORM_data8, DWARFFormValue::FC_Constant));
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39 EXPECT_TRUE(isFormClass(DW_FORM_data8, DWARFFormValue::FC_SectionOffset));
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40 EXPECT_TRUE(
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41 isFormClass(DW_FORM_sec_offset, DWARFFormValue::FC_SectionOffset));
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42 EXPECT_TRUE(isFormClass(DW_FORM_GNU_str_index, DWARFFormValue::FC_String));
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43 EXPECT_TRUE(isFormClass(DW_FORM_GNU_addr_index, DWARFFormValue::FC_Address));
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44 EXPECT_FALSE(isFormClass(DW_FORM_ref_addr, DWARFFormValue::FC_Address));
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45 EXPECT_TRUE(isFormClass(DW_FORM_ref_addr, DWARFFormValue::FC_Reference));
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46 EXPECT_TRUE(isFormClass(DW_FORM_ref_sig8, DWARFFormValue::FC_Reference));
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47 }
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48
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49 } // end anonymous namespace
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