forked from OSchip/llvm-project
67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
//===-- DWARFDebugRangesList.cpp ------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "DWARFDebugRangeList.h"
|
|
#include "llvm/Support/Format.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
using namespace llvm;
|
|
|
|
void DWARFDebugRangeList::clear() {
|
|
Offset = -1U;
|
|
AddressSize = 0;
|
|
Entries.clear();
|
|
}
|
|
|
|
bool DWARFDebugRangeList::extract(DataExtractor data, uint32_t *offset_ptr) {
|
|
clear();
|
|
if (!data.isValidOffset(*offset_ptr))
|
|
return false;
|
|
AddressSize = data.getAddressSize();
|
|
if (AddressSize != 4 && AddressSize != 8)
|
|
return false;
|
|
Offset = *offset_ptr;
|
|
while (true) {
|
|
RangeListEntry entry;
|
|
uint32_t prev_offset = *offset_ptr;
|
|
entry.StartAddress = data.getAddress(offset_ptr);
|
|
entry.EndAddress = data.getAddress(offset_ptr);
|
|
// Check that both values were extracted correctly.
|
|
if (*offset_ptr != prev_offset + 2 * AddressSize) {
|
|
clear();
|
|
return false;
|
|
}
|
|
if (entry.isEndOfListEntry())
|
|
break;
|
|
Entries.push_back(entry);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void DWARFDebugRangeList::dump(raw_ostream &OS) const {
|
|
for (const RangeListEntry &RLE : Entries) {
|
|
const char *format_str = (AddressSize == 4
|
|
? "%08x %08" PRIx64 " %08" PRIx64 "\n"
|
|
: "%08x %016" PRIx64 " %016" PRIx64 "\n");
|
|
OS << format(format_str, Offset, RLE.StartAddress, RLE.EndAddress);
|
|
}
|
|
OS << format("%08x <End of list>\n", Offset);
|
|
}
|
|
|
|
bool DWARFDebugRangeList::containsAddress(uint64_t BaseAddress,
|
|
uint64_t Address) const {
|
|
for (const RangeListEntry &RLE : Entries) {
|
|
if (RLE.isBaseAddressSelectionEntry(AddressSize))
|
|
BaseAddress = RLE.EndAddress;
|
|
else if (RLE.containsAddress(BaseAddress, Address))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|