drashna/ryujinx
1
0
Fork 0
Code Activity Actions

ARM exclusive monitor and multicore fixes (#589)

Browse source 
* Implement ARM exclusive load/store with compare exchange insts, and enable multicore by default

* Fix comment typo

* Support Linux and OSX on MemoryAlloc and CompareExchange128, some cleanup

* Use intel syntax on assembly code

* Adjust identation

* Add CPUID check and fix exclusive reservation granule size

* Update schema multicore scheduling default value

* Make the cpu id check code lower case aswell
This commit is contained in:
gdkchan 2019-02-18 20:52:06 -03:00 • committed by jduncanator
parent dd00a4b62d
commit 932224f051
19 changed files with 954 additions and 261 deletions
Download patch file Download diff file Expand all files Collapse all files

155
ChocolArm64/Memory/MemoryAllocWindows.cs Normal file
View file

@ -0,0 +1,155 @@
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace ChocolArm64.Memory
{
static class MemoryAllocWindows
{
[Flags]
private enum AllocationType : uint
{
Commit = 0x1000,
Reserve = 0x2000,
Decommit = 0x4000,
Release = 0x8000,
Reset = 0x80000,
Physical = 0x400000,
TopDown = 0x100000,
WriteWatch = 0x200000,
LargePages = 0x20000000
}
[Flags]
private enum MemoryProtection
{
NoAccess = 0x01,
ReadOnly = 0x02,
ReadWrite = 0x04,
WriteCopy = 0x08,
Execute = 0x10,
ExecuteRead = 0x20,
ExecuteReadWrite = 0x40,
ExecuteWriteCopy = 0x80,
GuardModifierflag = 0x100,
NoCacheModifierflag = 0x200,
WriteCombineModifierflag = 0x400
}
private enum WriteWatchFlags : uint
{
None = 0,
Reset = 1
}
[DllImport("kernel32.dll")]
private static extern IntPtr VirtualAlloc(
IntPtr lpAddress,
IntPtr dwSize,
AllocationType flAllocationType,
MemoryProtection flProtect);
[DllImport("kernel32.dll")]
private static extern bool VirtualProtect(
IntPtr lpAddress,
IntPtr dwSize,
MemoryProtection flNewProtect,
out MemoryProtection lpflOldProtect);
[DllImport("kernel32.dll")]
private static extern bool VirtualFree(
IntPtr lpAddress,
uint dwSize,
AllocationType dwFreeType);
[DllImport("kernel32.dll")]
private static extern int GetWriteWatch(
WriteWatchFlags dwFlags,
IntPtr lpBaseAddress,
IntPtr dwRegionSize,
IntPtr[] lpAddresses,
ref ulong lpdwCount,
out uint lpdwGranularity);
public static IntPtr Allocate(IntPtr size)
{
const AllocationType flags =
AllocationType.Reserve |
AllocationType.Commit;
IntPtr ptr = VirtualAlloc(IntPtr.Zero, size, flags, MemoryProtection.ReadWrite);
if (ptr == IntPtr.Zero)
{
throw new OutOfMemoryException();
}
return ptr;
}
public static IntPtr AllocateWriteTracked(IntPtr size)
{
const AllocationType flags =
AllocationType.Reserve |
AllocationType.Commit |
AllocationType.WriteWatch;
IntPtr ptr = VirtualAlloc(IntPtr.Zero, size, flags, MemoryProtection.ReadWrite);
if (ptr == IntPtr.Zero)
{
throw new OutOfMemoryException();
}
return ptr;
}
public static bool Reprotect(IntPtr address, IntPtr size, Memory.MemoryProtection protection)
{
MemoryProtection prot = GetProtection(protection);
return VirtualProtect(address, size, prot, out _);
}
private static MemoryProtection GetProtection(Memory.MemoryProtection protection)
{
switch (protection)
{
case Memory.MemoryProtection.None: return MemoryProtection.NoAccess;
case Memory.MemoryProtection.Read: return MemoryProtection.ReadOnly;
case Memory.MemoryProtection.ReadAndWrite: return MemoryProtection.ReadWrite;
case Memory.MemoryProtection.ReadAndExecute: return MemoryProtection.ExecuteRead;
case Memory.MemoryProtection.Execute: return MemoryProtection.Execute;
default: throw new ArgumentException($"Invalid permission \"{protection}\".");
}
}
public static bool Free(IntPtr address)
{
return VirtualFree(address, 0, AllocationType.Release);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static bool GetModifiedPages(
IntPtr address,
IntPtr size,
IntPtr[] addresses,
out ulong count)
{
ulong pagesCount = (ulong)addresses.Length;
int result = GetWriteWatch(
WriteWatchFlags.Reset,
address,
size,
addresses,
ref pagesCount,
out uint granularity);
count = pagesCount;
return result == 0;
}
}
}