[Lldb-commits] [lldb] [lldb][DWARF64] Enable support for DWARF64 format handling (PR #145645)

[Hemang Gadhavi via lldb-commits]

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@@ -0,0 +1,96 @@
+//===-- DWARF64UnitTest.cpp--------------------------------------------=---===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "Plugins/SymbolFile/DWARF/DWARFDebugInfo.h"
+#include "Plugins/SymbolFile/DWARF/DWARFUnit.h"
+#include "TestingSupport/Symbol/YAMLModuleTester.h"
+
+using namespace lldb_private;
+using namespace lldb_private::dwarf;
+using namespace lldb_private::plugin::dwarf;
+
+TEST(DWARF64UnitTest, DWARF64DebugInfoAndCU) {
+  const char *yamldata = R"(
+--- !ELF
+FileHeader:
+  Class:   ELFCLASS64
+  Data:    ELFDATA2LSB
+  Type:    ET_EXEC
+  Machine: EM_PPC64
+DWARF:
+  debug_str:
+    - 'clang version 18.1.8 (clang-18.1.8-1)'
+    - 'main'
+  debug_abbrev:
+    - Table:
+        - Code:            0x1
+          Tag:             DW_TAG_compile_unit
+          Children:        DW_CHILDREN_yes
+          Attributes:
+            - Attribute:       DW_AT_producer
+              Form:            DW_FORM_strp
+            - Attribute:       DW_AT_language
+              Form:            DW_FORM_data2
+            - Attribute:       DW_AT_stmt_list 
+              Form:            DW_FORM_sec_offset 
+            - Attribute:       DW_AT_low_pc
+              Form:            DW_FORM_addr
+            - Attribute:       DW_AT_high_pc
+              Form:            DW_FORM_data4
+        - Code:            0x02
+          Tag:             DW_TAG_subprogram 
+          Children:        DW_CHILDREN_no
+          Attributes:
+            - Attribute:       DW_AT_name 
+              Form:            DW_FORM_strp
+  debug_info:
+    - Format:          DWARF64
+      Version:         4
+      AbbrOffset:      0x0
+      AddrSize:        8
+      Entries:
+        - AbbrCode:        0x1
+          Values:
+            - Value:           0x0
+            - Value:           0x04
+            - Value:           0x0
+            - Value:	       0xdeadbeef
+            - Value:	       0xdeadbeef
+        - AbbrCode:        0x2
+          Values:
+            - Value:           0x1
+        - AbbrCode:	   0x0
+)";
+
+  YAMLModuleTester t(yamldata);
+  auto *symbol_file =
+      llvm::cast<SymbolFileDWARF>(t.GetModule()->GetSymbolFile());
+  DWARFUnit *unit = symbol_file->DebugInfo().GetUnitAtIndex(0);
+  ASSERT_TRUE(unit);
+  ASSERT_EQ(unit->GetFormParams().Format, DwarfFormat::DWARF64);
+  ASSERT_EQ(unit->GetVersion(), 4);
+  ASSERT_EQ(unit->GetAddressByteSize(), 8);
+
+  DWARFFormValue form_value;
+  const DWARFDebugInfoEntry *cu_entry = unit->DIE().GetDIE();
+  ASSERT_EQ(cu_entry->Tag(), DW_TAG_compile_unit);
+  ASSERT_EQ(unit->GetProducer(), eProducerClang);
+  ASSERT_EQ(unit->GetDWARFLanguageType(), DW_LANG_C_plus_plus);
+  auto attrs = cu_entry->GetAttributes(unit, DWARFDebugInfoEntry::Recurse::yes);
+  attrs.ExtractFormValueAtIndex(2, form_value); // Validate DW_AT_stmt_list
+  ASSERT_EQ(form_value.Unsigned(), 0UL);
+  attrs.ExtractFormValueAtIndex(3, form_value); // Validate DW_AT_low_pc
+  ASSERT_EQ(form_value.Unsigned(), 0xdeadbeef);
+  attrs.ExtractFormValueAtIndex(4, form_value); // Validate DW_AT_high_pc
+  ASSERT_EQ(form_value.Unsigned(), 0xdeadbeef);
----------------
HemangGadhavi wrote:

Thanks @labath 
I have removed it. If no more comments can you please merge it. I do not have access yet. 

https://github.com/llvm/llvm-project/pull/145645