unittests/DebugInfo/DWARFFormValueTest.cpp

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