IntelFsp2Pkg/Library/SecFspSecPlatformLibNull/X64/SecCarInit.nasm

   1 ;; @file
   2 ;  SEC CAR function
   3 ;
   4 ; Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
   5 ; SPDX-License-Identifier: BSD-2-Clause-Patent
   6 ;;
   7
   8 ;
   9 ; Define assembler characteristics
  10 ;
  11
  12 %macro RET_RSI 0
  13
  14   movd    rsi, mm7                      ; move ReturnAddress from MM7 to RSI
  15   jmp     rsi
  16
  17 %endmacro
  18
  19 SECTION .text
  20
  21 ;-----------------------------------------------------------------------------
  22 ;
  23 ;  Section:     SecCarInit
  24 ;
  25 ;  Description: This function initializes the Cache for Data, Stack, and Code
  26 ;
  27 ;-----------------------------------------------------------------------------
  28 global ASM_PFX(SecCarInit)
  29 ASM_PFX(SecCarInit):
  30
  31   ;
  32   ; Set up CAR
  33   ;
  34
  35   xor    rax, rax
  36
  37 SecCarInitExit:
  38
  39   RET_RSI
  40