projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 631f060b | 1 | #------------------------------------------------------------------------------ |
| 2 | # | |
| 3 | # Copyright (c) 2006, Intel Corporation | |
| 4 | # All rights reserved. This program and the accompanying materials | |
| 5 | # are licensed and made available under the terms and conditions of the BSD License | |
| 6 | # which accompanies this distribution. The full text of the license may be found at | |
| 7 | # http://opensource.org/licenses/bsd-license.php | |
| 8 | # | |
| 9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| 10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| 11 | # | |
| 12 | # Module Name: | |
| 13 | # | |
| 14 | # CompareMem.Asm | |
| 15 | # | |
| 16 | # Abstract: | |
| 17 | # | |
| 18 | # CompareMem function | |
| 19 | # | |
| 20 | # Notes: | |
| 21 | # | |
| 2bfb6009 | 22 | # The following BaseMemoryLib instances contain the same copy of this file: |
| 631f060b | 23 | # |
| 24 | # BaseMemoryLibRepStr | |
| 25 | # BaseMemoryLibMmx | |
| 26 | # BaseMemoryLibSse2 | |
| 2bfb6009 LG |
27 | # BaseMemoryLibOptDxe |
| 28 | # BaseMemoryLibOptPei | |
| 631f060b | 29 | # |
| 30 | #------------------------------------------------------------------------------ | |
| 31 | ||
| 85c25283 | 32 | .globl ASM_PFX(InternalMemCompareMem) |
| 631f060b | 33 | |
| 34 | #------------------------------------------------------------------------------ | |
| 35 | # INTN | |
| 36 | # EFIAPI | |
| 37 | # InternalMemCompareMem ( | |
| 38 | # IN CONST VOID *DestinationBuffer, | |
| 39 | # IN CONST VOID *SourceBuffer, | |
| 40 | # IN UINTN Length | |
| 41 | # ); | |
| 42 | #------------------------------------------------------------------------------ | |
| 85c25283 | 43 | ASM_PFX(InternalMemCompareMem): |
| 631f060b | 44 | push %esi |
| 45 | push %edi | |
| 46 | movl 12(%esp), %esi | |
| 47 | movl 16(%esp), %edi | |
| 48 | movl 20(%esp), %ecx | |
| 49 | repe cmpsb | |
| 50 | movzbl -1(%esi), %eax | |
| 51 | movzbl -1(%edi), %edx | |
| 52 | subl %edx, %eax | |
| 53 | pop %edi | |
| 54 | pop %esi | |
| 55 | ret |