MdePkg/Library/BaseMemoryLibOptDxe/Arm/CompareGuid.asm

   1 ;
   2 ; Copyright (c) 2016, Linaro Limited
   3 ; All rights reserved.
   4 ; SPDX-License-Identifier: BSD-2-Clause-Patent
   5 ;
   6
   7     EXPORT  InternalMemCompareGuid
   8     THUMB
   9     AREA    CompareGuid, CODE, READONLY, CODEALIGN, ALIGN=5
  10
  11 InternalMemCompareGuid
  12     push    {r4, lr}
  13     ldr     r2, [r0]
  14     ldr     r3, [r0, #4]
  15     ldr     r4, [r0, #8]
  16     ldr     r0, [r0, #12]
  17     cbz     r1, L1
  18     ldr     ip, [r1]
  19     ldr     lr, [r1, #4]
  20     cmp     r2, ip
  21     it      eq
  22     cmpeq   r3, lr
  23     beq     L0
  24     movs    r0, #0
  25     pop     {r4, pc}
  26
  27 L0
  28     ldr     r2, [r1, #8]
  29     ldr     r3, [r1, #12]
  30     cmp     r4, r2
  31     it      eq
  32     cmpeq   r0, r3
  33     bne     L2
  34     movs    r0, #1
  35     pop     {r4, pc}
  36
  37 L1
  38     orrs    r2, r2, r3
  39     orrs    r4, r4, r0
  40     movs    r0, #1
  41     orrs    r2, r2, r4
  42
  43 L2
  44     it      ne
  45     movne   r0, #0
  46     pop     {r4, pc}
  47
  48     END