2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
111 lines
3.1 KiB
C++
111 lines
3.1 KiB
C++
//===-- DWARFDebugMacinfoEntry.cpp ------------------------------*- C++ -*-===//
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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 "DWARFDebugMacinfoEntry.h"
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#include "lldb/Utility/Stream.h"
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using namespace lldb_private;
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using namespace std;
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DWARFDebugMacinfoEntry::DWARFDebugMacinfoEntry()
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: m_type_code(0), m_line(0), m_op2() {
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m_op2.cstr = NULL;
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}
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DWARFDebugMacinfoEntry::~DWARFDebugMacinfoEntry() {}
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const char *DWARFDebugMacinfoEntry::GetCString() const {
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switch (m_type_code) {
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case 0:
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case DW_MACINFO_start_file:
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case DW_MACINFO_end_file:
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return NULL;
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default:
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break;
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}
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return m_op2.cstr;
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}
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void DWARFDebugMacinfoEntry::Dump(Stream *s) const {
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if (m_type_code) {
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s->PutCString(DW_MACINFO_value_to_name(m_type_code));
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switch (m_type_code) {
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case DW_MACINFO_define:
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s->Printf(" line:%u #define %s\n", (uint32_t)m_line, m_op2.cstr);
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break;
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case DW_MACINFO_undef:
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s->Printf(" line:%u #undef %s\n", (uint32_t)m_line, m_op2.cstr);
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break;
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default:
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s->Printf(" line:%u str: '%s'\n", (uint32_t)m_line, m_op2.cstr);
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break;
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case DW_MACINFO_start_file:
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s->Printf(" line:%u file index: '%u'\n", (uint32_t)m_line,
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(uint32_t)m_op2.file_idx);
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break;
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case DW_MACINFO_end_file:
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break;
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}
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} else {
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s->PutCString(" END\n");
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}
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}
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bool DWARFDebugMacinfoEntry::Extract(const DWARFDataExtractor &mac_info_data,
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lldb::offset_t *offset_ptr) {
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if (mac_info_data.ValidOffset(*offset_ptr)) {
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m_type_code = mac_info_data.GetU8(offset_ptr);
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switch (m_type_code) {
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case DW_MACINFO_define:
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case DW_MACINFO_undef:
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// 2 operands:
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// Arg 1: operand encodes the line number of the source line on which
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// the relevant defining or undefining pre-processor directives
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// appeared.
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m_line = mac_info_data.GetULEB128(offset_ptr);
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// Arg 2: define string
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m_op2.cstr = mac_info_data.GetCStr(offset_ptr);
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break;
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case DW_MACINFO_start_file:
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// 2 operands:
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// Op 1: line number of the source line on which the inclusion
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// pre-processor directive occurred.
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m_line = mac_info_data.GetULEB128(offset_ptr);
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// Op 2: a source file name index to a file number in the statement
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// information table for the relevant compilation unit.
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m_op2.file_idx = mac_info_data.GetULEB128(offset_ptr);
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break;
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case 0: // End of list
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case DW_MACINFO_end_file:
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// No operands
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m_line = DW_INVALID_OFFSET;
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m_op2.cstr = NULL;
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break;
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default:
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// Vendor specific entries always have a ULEB128 and a string
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m_line = mac_info_data.GetULEB128(offset_ptr);
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m_op2.cstr = mac_info_data.GetCStr(offset_ptr);
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break;
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}
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return true;
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} else
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m_type_code = 0;
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return false;
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}
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