mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-12-24 23:06:02 +00:00
68 lines
1.8 KiB
C#
68 lines
1.8 KiB
C#
|
using Ryujinx.Memory;
|
||
|
using System;
|
||
|
|
||
|
namespace Ryujinx.Cpu.AppleHv
|
||
|
{
|
||
|
static class HvVm
|
||
|
{
|
||
|
// This alignment allows us to use larger blocks on the page table.
|
||
|
private const ulong AsIpaAlignment = 1UL << 30;
|
||
|
|
||
|
private static int _addressSpaces;
|
||
|
private static HvIpaAllocator _ipaAllocator;
|
||
|
private static object _lock = new object();
|
||
|
|
||
|
public static (ulong, HvIpaAllocator) CreateAddressSpace(MemoryBlock block)
|
||
|
{
|
||
|
HvIpaAllocator ipaAllocator;
|
||
|
|
||
|
lock (_lock)
|
||
|
{
|
||
|
if (++_addressSpaces == 1)
|
||
|
{
|
||
|
HvApi.hv_vm_create(IntPtr.Zero).ThrowOnError();
|
||
|
_ipaAllocator = ipaAllocator = new HvIpaAllocator();
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
ipaAllocator = _ipaAllocator;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
ulong baseAddress;
|
||
|
|
||
|
lock (ipaAllocator)
|
||
|
{
|
||
|
baseAddress = ipaAllocator.Allocate(block.Size, AsIpaAlignment);
|
||
|
}
|
||
|
|
||
|
var rwx = hv_memory_flags_t.HV_MEMORY_READ | hv_memory_flags_t.HV_MEMORY_WRITE | hv_memory_flags_t.HV_MEMORY_EXEC;
|
||
|
|
||
|
HvApi.hv_vm_map((ulong)block.Pointer, baseAddress, block.Size, rwx).ThrowOnError();
|
||
|
|
||
|
return (baseAddress, ipaAllocator);
|
||
|
}
|
||
|
|
||
|
public static void DestroyAddressSpace(ulong address, ulong size)
|
||
|
{
|
||
|
HvApi.hv_vm_unmap(address, size);
|
||
|
|
||
|
HvIpaAllocator ipaAllocator;
|
||
|
|
||
|
lock (_lock)
|
||
|
{
|
||
|
if (--_addressSpaces == 0)
|
||
|
{
|
||
|
HvApi.hv_vm_destroy().ThrowOnError();
|
||
|
}
|
||
|
|
||
|
ipaAllocator = _ipaAllocator;
|
||
|
}
|
||
|
|
||
|
lock (ipaAllocator)
|
||
|
{
|
||
|
ipaAllocator.Free(address, size);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|