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//===-- DWARFDebugMacinfoEntry.cpp ------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DWARFDebugMacinfoEntry.h"
#include "lldb/Utility/Stream.h"
using namespace lldb_private;
using namespace std;
DWARFDebugMacinfoEntry::DWARFDebugMacinfoEntry()
: m_type_code(0), m_line(0), m_op2() {
m_op2.cstr = NULL;
}
DWARFDebugMacinfoEntry::~DWARFDebugMacinfoEntry() {}
const char *DWARFDebugMacinfoEntry::GetCString() const {
switch (m_type_code) {
case 0:
case DW_MACINFO_start_file:
case DW_MACINFO_end_file:
return NULL;
default:
break;
}
return m_op2.cstr;
}
void DWARFDebugMacinfoEntry::Dump(Stream *s) const {
if (m_type_code) {
s->PutCString(DW_MACINFO_value_to_name(m_type_code));
switch (m_type_code) {
case DW_MACINFO_define:
s->Printf(" line:%u #define %s\n", (uint32_t)m_line, m_op2.cstr);
break;
case DW_MACINFO_undef:
s->Printf(" line:%u #undef %s\n", (uint32_t)m_line, m_op2.cstr);
break;
default:
s->Printf(" line:%u str: '%s'\n", (uint32_t)m_line, m_op2.cstr);
break;
case DW_MACINFO_start_file:
s->Printf(" line:%u file index: '%u'\n", (uint32_t)m_line,
(uint32_t)m_op2.file_idx);
break;
case DW_MACINFO_end_file:
break;
}
} else {
s->PutCString(" END\n");
}
}
bool DWARFDebugMacinfoEntry::Extract(const DWARFDataExtractor &mac_info_data,
lldb::offset_t *offset_ptr) {
if (mac_info_data.ValidOffset(*offset_ptr)) {
m_type_code = mac_info_data.GetU8(offset_ptr);
switch (m_type_code) {
case DW_MACINFO_define:
case DW_MACINFO_undef:
// 2 operands:
// Arg 1: operand encodes the line number of the source line on which
// the relevant defining or undefining pre-processor directives
// appeared.
m_line = mac_info_data.GetULEB128(offset_ptr);
// Arg 2: define string
m_op2.cstr = mac_info_data.GetCStr(offset_ptr);
break;
case DW_MACINFO_start_file:
// 2 operands:
// Op 1: line number of the source line on which the inclusion
// pre-processor directive occurred.
m_line = mac_info_data.GetULEB128(offset_ptr);
// Op 2: a source file name index to a file number in the statement
// information table for the relevant compilation unit.
m_op2.file_idx = mac_info_data.GetULEB128(offset_ptr);
break;
case 0: // End of list
case DW_MACINFO_end_file:
// No operands
m_line = DW_INVALID_OFFSET;
m_op2.cstr = NULL;
break;
default:
// Vendor specific entries always have a ULEB128 and a string
m_line = mac_info_data.GetULEB128(offset_ptr);
m_op2.cstr = mac_info_data.GetCStr(offset_ptr);
break;
}
return true;
} else
m_type_code = 0;
return false;
}
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