| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> | |
| ; SPDX-License-Identifier: BSD-2-Clause-Patent | |
| ; | |
| ; Module Name: | |
| ; | |
| ; InterlockedDecrement.Asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; InterlockedDecrement function | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| SECTION .text | |
| ;------------------------------------------------------------------------------ | |
| ; UINT32 | |
| ; EFIAPI | |
| ; InternalSyncDecrement ( | |
| ; IN volatile UINT32 *Value | |
| ; ); | |
| ;------------------------------------------------------------------------------ | |
| global ASM_PFX(InternalSyncDecrement) | |
| ASM_PFX(InternalSyncDecrement): | |
| mov ecx, [esp + 4] | |
| mov eax, 0FFFFFFFFh | |
| lock xadd dword [ecx], eax | |
| dec eax | |
| ret |