/// <summary>allocate <paramref name="size"/> bytes starting at a particular address <paramref name="start"/></summary>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="start"/> is not aligned or <paramref name="size"/> is <c>0</c></exception>
protected MemoryBlockBase(ulong start, ulong size)
{
if (!WaterboxUtils.Aligned(start))
{
throw new ArgumentOutOfRangeException(nameof(start), start, "start address must be aligned");
}
if (size == 0)
{
throw new ArgumentOutOfRangeException(nameof(size), size, "cannot create 0-length block");
}
Size = WaterboxUtils.AlignUp(size);
AddressRange = start.RangeToExclusive(start + Size);
_pageData = new Protection[1 + GetPage(AddressRange.EndInclusive)];
}
/// <summary>allocate <paramref name="size"/> bytes</summary>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="size"/> is not aligned or is <c>0</c></exception>
public MemoryBlock(ulong size)
{
if (!WaterboxUtils.Aligned(size))
{
throw new ArgumentOutOfRangeException(nameof(size), size, "size must be aligned");
}
if (size == 0)
{
throw new ArgumentOutOfRangeException(nameof(size), size, "cannot create 0-length block");
}
Size = WaterboxUtils.AlignUp(size);
_pal = OSTailoredCode.IsUnixHost
? (IMemoryBlockPal) new MemoryBlockLinuxPal(Size)
: new MemoryBlockWindowsPal(Size);
Start = _pal !.Start;
EndExclusive = Start + Size;
}
/// <summary>allocate <paramref name="size"/> bytes starting at a particular address <paramref name="start"/></summary>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="start"/> is not aligned or <paramref name="size"/> is <c>0</c></exception>
public MemoryBlock(ulong start, ulong size)
{
if (!WaterboxUtils.Aligned(start))
{
throw new ArgumentOutOfRangeException(nameof(start), start, "start address must be aligned");
}
if (size == 0)
{
throw new ArgumentOutOfRangeException(nameof(size), size, "cannot create 0-length block");
}
Start = start;
Size = WaterboxUtils.AlignUp(size);
EndExclusive = Start + Size;
_pageData = new Protection[GetPage(EndExclusive - 1) + 1];
_pal = OSTailoredCode.IsUnixHost
? (IMemoryBlockPal) new MemoryBlockUnixPal(Start, Size)
: new MemoryBlockWindowsPal(Start, Size);
}
/// <summary>allocate <paramref name="size"/> bytes starting at a particular address <paramref name="start"/></summary>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="start"/> is not aligned or <paramref name="size"/> is <c>0</c></exception>
public MemoryBlock(ulong start, ulong size)
{
if (!WaterboxUtils.Aligned(start))
{
throw new ArgumentOutOfRangeException(nameof(start), start, "start address must be aligned");
}
if (size == 0)
{
throw new ArgumentOutOfRangeException(nameof(size), size, "cannot create 0-length block");
}
if (start == 0)
{
throw new NotImplementedException("Start == 0 doesn't work right now, not really");
}
Start = start;
Size = WaterboxUtils.AlignUp(size);
EndExclusive = Start + Size;
_pageData = (Protection[])(object)new byte[GetPage(EndExclusive - 1) + 1];
_pal = OSTailoredCode.IsUnixHost
? (IMemoryBlockPal) new MemoryBlockLinuxPal(Start, Size)
: new MemoryBlockWindowsPal(Start, Size);
}
