b9c1b51e45
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
128 lines
4.4 KiB
C++
128 lines
4.4 KiB
C++
//===-- DWARFDebugMacro.cpp -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "DWARFDebugMacro.h"
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#include "SymbolFileDWARF.h"
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#include "lldb/Symbol/DebugMacros.h"
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#include "DWARFDataExtractor.h"
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using namespace lldb_private;
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DWARFDebugMacroHeader
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DWARFDebugMacroHeader::ParseHeader(const DWARFDataExtractor &debug_macro_data,
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lldb::offset_t *offset) {
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DWARFDebugMacroHeader header;
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// Skip over the version field in header.
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header.m_version = debug_macro_data.GetU16(offset);
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uint8_t flags = debug_macro_data.GetU8(offset);
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header.m_offset_is_64_bit = flags & OFFSET_SIZE_MASK ? true : false;
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if (flags & DEBUG_LINE_OFFSET_MASK) {
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if (header.m_offset_is_64_bit)
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header.m_debug_line_offset = debug_macro_data.GetU64(offset);
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else
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header.m_debug_line_offset = debug_macro_data.GetU32(offset);
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}
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// Skip over the operands table if it is present.
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if (flags & OPCODE_OPERANDS_TABLE_MASK)
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SkipOperandTable(debug_macro_data, offset);
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return header;
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}
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void DWARFDebugMacroHeader::SkipOperandTable(
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const DWARFDataExtractor &debug_macro_data, lldb::offset_t *offset) {
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uint8_t entry_count = debug_macro_data.GetU8(offset);
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for (uint8_t i = 0; i < entry_count; i++) {
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// Skip over the opcode number.
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debug_macro_data.GetU8(offset);
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uint64_t operand_count = debug_macro_data.GetULEB128(offset);
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for (uint64_t j = 0; j < operand_count; j++) {
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// Skip over the operand form
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debug_macro_data.GetU8(offset);
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}
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}
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}
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void DWARFDebugMacroEntry::ReadMacroEntries(
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const DWARFDataExtractor &debug_macro_data,
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const DWARFDataExtractor &debug_str_data, const bool offset_is_64_bit,
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lldb::offset_t *offset, SymbolFileDWARF *sym_file_dwarf,
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DebugMacrosSP &debug_macros_sp) {
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llvm::dwarf::MacroEntryType type =
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static_cast<llvm::dwarf::MacroEntryType>(debug_macro_data.GetU8(offset));
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while (type != 0) {
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lldb::offset_t new_offset = 0, str_offset = 0;
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uint32_t line = 0;
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const char *macro_str = nullptr;
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uint32_t debug_line_file_idx = 0;
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switch (type) {
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case DW_MACRO_define:
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case DW_MACRO_undef:
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line = debug_macro_data.GetULEB128(offset);
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macro_str = debug_macro_data.GetCStr(offset);
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if (type == DW_MACRO_define)
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debug_macros_sp->AddMacroEntry(
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DebugMacroEntry::CreateDefineEntry(line, macro_str));
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else
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debug_macros_sp->AddMacroEntry(
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DebugMacroEntry::CreateUndefEntry(line, macro_str));
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break;
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case DW_MACRO_define_indirect:
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case DW_MACRO_undef_indirect:
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line = debug_macro_data.GetULEB128(offset);
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if (offset_is_64_bit)
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str_offset = debug_macro_data.GetU64(offset);
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else
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str_offset = debug_macro_data.GetU32(offset);
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macro_str = debug_str_data.GetCStr(&str_offset);
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if (type == DW_MACRO_define_indirect)
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debug_macros_sp->AddMacroEntry(
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DebugMacroEntry::CreateDefineEntry(line, macro_str));
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else
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debug_macros_sp->AddMacroEntry(
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DebugMacroEntry::CreateUndefEntry(line, macro_str));
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break;
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case DW_MACRO_start_file:
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line = debug_macro_data.GetULEB128(offset);
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debug_line_file_idx = debug_macro_data.GetULEB128(offset);
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debug_macros_sp->AddMacroEntry(
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DebugMacroEntry::CreateStartFileEntry(line, debug_line_file_idx));
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break;
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case DW_MACRO_end_file:
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// This operation has no operands.
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debug_macros_sp->AddMacroEntry(DebugMacroEntry::CreateEndFileEntry());
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break;
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case DW_MACRO_transparent_include:
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if (offset_is_64_bit)
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new_offset = debug_macro_data.GetU64(offset);
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else
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new_offset = debug_macro_data.GetU32(offset);
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debug_macros_sp->AddMacroEntry(DebugMacroEntry::CreateIndirectEntry(
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sym_file_dwarf->ParseDebugMacros(&new_offset)));
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break;
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default:
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// TODO: Add support for other standard operations.
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// TODO: Provide mechanism to hook handling of non-standard/extension
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// operands.
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return;
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}
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type = static_cast<llvm::dwarf::MacroEntryType>(
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debug_macro_data.GetU8(offset));
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}
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}
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