MdePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdePkg / Library / BaseSynchronizationLib / Ia32 / InterlockedCompareExchange64.nasm

;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r
; SPDX-License-Identifier: BSD-2-Clause-Patent\r
;\r
; Module Name:\r
;\r
;   InterlockedCompareExchange64.Asm\r
;\r
; Abstract:\r
;\r
;   InterlockedCompareExchange64 function\r
;\r
; Notes:\r
;\r
;------------------------------------------------------------------------------\r
\r
    SECTION .text\r
\r
;------------------------------------------------------------------------------\r
; UINT64\r
; EFIAPI\r
; InternalSyncCompareExchange64 (\r
;   IN      volatile UINT64           *Value,\r
;   IN      UINT64                    CompareValue,\r
;   IN      UINT64                    ExchangeValue\r
;   );\r
;------------------------------------------------------------------------------\r
global ASM_PFX(InternalSyncCompareExchange64)\r
ASM_PFX(InternalSyncCompareExchange64):\r
    push    esi\r
    push    ebx\r
    mov     esi, [esp + 12]\r
    mov     eax, [esp + 16]\r
    mov     edx, [esp + 20]\r
    mov     ebx, [esp + 24]\r
    mov     ecx, [esp + 28]\r
    lock    cmpxchg8b [esi]\r
    pop     ebx\r
    pop     esi\r
    ret\r
\r