Error
ProcessWinMiniDump::GetMemoryRegionInfo(lldb::addr_t load_addr, lldb_private::MemoryRegionInfo &info)
{
Error error;
size_t size;
const auto list = reinterpret_cast<const MINIDUMP_MEMORY_INFO_LIST *>(FindDumpStream(MemoryInfoListStream, &size));
if (list == nullptr || size < sizeof(MINIDUMP_MEMORY_INFO_LIST))
{
error.SetErrorString("the mini dump contains no memory range information");
return error;
}
if (list->SizeOfEntry < sizeof(MINIDUMP_MEMORY_INFO))
{
error.SetErrorString("the entries in the mini dump memory info list are smaller than expected");
return error;
}
if (size < list->SizeOfHeader + list->SizeOfEntry * list->NumberOfEntries)
{
error.SetErrorString("the mini dump memory info list is incomplete");
return error;
}
for (int i = 0; i < list->NumberOfEntries; ++i)
{
const auto entry = reinterpret_cast<const MINIDUMP_MEMORY_INFO *>(reinterpret_cast<const char *>(list) +
list->SizeOfHeader + i * list->SizeOfEntry);
const auto head = entry->BaseAddress;
const auto tail = head + entry->RegionSize;
if (head <= load_addr && load_addr < tail)
{
info.SetReadable(IsPageReadable(entry->Protect) ? MemoryRegionInfo::eYes : MemoryRegionInfo::eNo);
info.SetWritable(IsPageWritable(entry->Protect) ? MemoryRegionInfo::eYes : MemoryRegionInfo::eNo);
info.SetExecutable(IsPageExecutable(entry->Protect) ? MemoryRegionInfo::eYes : MemoryRegionInfo::eNo);
return error;
}
}
// Note that the memory info list doesn't seem to contain ranges in kernel space,
// so if you're walking a stack that has kernel frames, the stack may appear
// truncated.
error.SetErrorString("address is not in a known range");
return error;
}
Error
ProcessWinMiniDump::Impl::GetMemoryRegionInfo(lldb::addr_t load_addr, lldb_private::MemoryRegionInfo &info)
{
Error error;
size_t size;
info.Clear();
const auto list = reinterpret_cast<const MINIDUMP_MEMORY_INFO_LIST *>(FindDumpStream(MemoryInfoListStream, &size));
if (list == nullptr || size < sizeof(MINIDUMP_MEMORY_INFO_LIST))
{
error.SetErrorString("the mini dump contains no memory range information");
return error;
}
if (list->SizeOfEntry < sizeof(MINIDUMP_MEMORY_INFO))
{
error.SetErrorString("the entries in the mini dump memory info list are smaller than expected");
return error;
}
if (size < list->SizeOfHeader + list->SizeOfEntry * list->NumberOfEntries)
{
error.SetErrorString("the mini dump memory info list is incomplete");
return error;
}
const MINIDUMP_MEMORY_INFO *next_entry = nullptr;
for (int i = 0; i < list->NumberOfEntries; ++i)
{
const auto entry = reinterpret_cast<const MINIDUMP_MEMORY_INFO *>(reinterpret_cast<const char *>(list) +
list->SizeOfHeader + i * list->SizeOfEntry);
const auto head = entry->BaseAddress;
const auto tail = head + entry->RegionSize;
if (head <= load_addr && load_addr < tail)
{
info.GetRange().SetRangeBase((entry->State != MEM_FREE) ? head : load_addr);
info.GetRange().SetRangeEnd(tail);
info.SetReadable(IsPageReadable(entry->Protect) ? MemoryRegionInfo::eYes : MemoryRegionInfo::eNo);
info.SetWritable(IsPageWritable(entry->Protect) ? MemoryRegionInfo::eYes : MemoryRegionInfo::eNo);
info.SetExecutable(IsPageExecutable(entry->Protect) ? MemoryRegionInfo::eYes : MemoryRegionInfo::eNo);
info.SetMapped((entry->State != MEM_FREE) ? MemoryRegionInfo::eYes : MemoryRegionInfo::eNo);
return error;
}
else if (head > load_addr && (next_entry == nullptr || head < next_entry->BaseAddress) )
{
// In case there is no region containing load_addr keep track of the nearest region
// after load_addr so we can return the distance to it.
next_entry = entry;
}
}
// No containing region found. Create an unmapped region that extends to the next region
// or LLDB_INVALID_ADDRESS
info.GetRange().SetRangeBase(load_addr);
info.GetRange().SetRangeEnd((next_entry != nullptr)?next_entry->BaseAddress:LLDB_INVALID_ADDRESS);
info.SetReadable(MemoryRegionInfo::eNo);
info.SetWritable(MemoryRegionInfo::eNo);
info.SetExecutable(MemoryRegionInfo::eNo);
info.SetMapped(MemoryRegionInfo::eNo);
// Note that the memory info list doesn't seem to contain ranges in kernel space,
// so if you're walking a stack that has kernel frames, the stack may appear
// truncated.
return error;
}