public DbgMemory(ulong address,
byte[] bytes,
bool is32bit,
bool isBigEndian,
Func <ulong, ColorString> lookupSymbol)
{
if (null == bytes)
{
throw new ArgumentNullException("bytes");
}
if (0 == bytes.Length)
{
throw new ArgumentOutOfRangeException("bytes.Length",
bytes.Length,
"You must give at least one byte.");
}
StartAddress = address;
m_bytes = bytes;
IsBigEndian = isBigEndian;
m_is32Bit = is32bit;
m_lookupSymbol = lookupSymbol;
MemoryRegion = AddressMap.GetMemoryRegionsForAddress(DbgEngDebugger._GlobalDebugger, address);
if (isBigEndian)
{
throw new NotSupportedException("No support for big-endian data yet.");
}
DefaultDisplayFormat = DbgMemoryDisplayFormat.Bytes;
} // end constructor
public static AddressMap GetAddressMap(DbgEngDebugger debugger)
{
if (!sm_initDone)
{
debugger.SymbolStateChanged += (_, __) => DumpAddressMapAtSlightestProvocation();
debugger.DebuggeeStateChanged += (_, __) => DumpAddressMapAtSlightestProvocation();
sm_initDone = true;
}
//TODO: thread through cancellation token!
return(sm_cachedAddressMap ?? (sm_cachedAddressMap = debugger.ExecuteOnDbgEngThread(() => BuildAddressMap(debugger))));
}
private static AddressMap BuildAddressMap(DbgEngDebugger debugger)
{
var result = new AddressMap();
var addrList = result.m_addresses;
foreach (var provider in sm_regionProviders)
{
foreach (var region in provider.IdentifyRegions(debugger))
{
addrList.Add(region);
}
}
int addressesIdx = 0;
ulong address = 0;
while (debugger.TryQueryVirtual(address, out var info) == 0)
{
if ((info.State & MEM.FREE) != 0)
{
address += info.RegionSize;
}
else
{
while (addressesIdx < addrList.Count && (addrList[addressesIdx].BaseAddress + addrList[addressesIdx].Size) <= info.BaseAddress)
{
addressesIdx++;
}
var region = new VirtualAllocRegion(info, debugger);
address += region.Size;
var regionEndAddress = region.BaseAddress + region.Size;
var contiguousRegionStart = ulong.MaxValue;
var contiguousRegionEnd = ulong.MaxValue;
if (addressesIdx < addrList.Count)
{
contiguousRegionStart = addrList[addressesIdx].BaseAddress;
contiguousRegionEnd = addrList[addressesIdx].EndAddress;
while (contiguousRegionEnd < regionEndAddress && addressesIdx + 1 < addrList.Count && addrList[addressesIdx + 1].BaseAddress == contiguousRegionEnd)
{
addressesIdx++;
contiguousRegionEnd = addrList[addressesIdx].EndAddress;
}
}
if (contiguousRegionStart > region.BaseAddress || contiguousRegionEnd < region.EndAddress)
{
addrList.Add(region);
}
}
//dbgeng seems to be susceptible to wigging out somewhere north of the 4GB line in 32-bit mode with Wow64 processes
if (debugger.TargetIs32Bit && address > uint.MaxValue)
{
break;
}
}
return(result);
}
private static void DumpAddressMapAtSlightestProvocation()
{
sm_cachedAddressMap = null;
}