| #------------------------------------------------------------------------------ |
| # |
| # Copyright (c) 2006, Intel Corporation |
| # All rights reserved. This program and the accompanying materials |
| # are licensed and made available under the terms and conditions of the BSD License |
| # which accompanies this distribution. The full text of the license may be found at |
| # http://opensource.org/licenses/bsd-license.php |
| # |
| # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. |
| # |
| # Module Name: |
| # |
| # SetMem.asm |
| # |
| # Abstract: |
| # |
| # SetMem function |
| # |
| # Notes: |
| # |
| #------------------------------------------------------------------------------ |
| |
| .686: |
| #.MODEL flat,C |
| .xmm: |
| .code: |
| |
| #------------------------------------------------------------------------------ |
| # VOID * |
| # _mem_SetMem ( |
| # IN VOID *Buffer, |
| # IN UINTN Count, |
| # IN UINT8 Value |
| # ) |
| #------------------------------------------------------------------------------ |
| .global _InternalMemSetMem |
| _InternalMemSetMem: |
| push %edi |
| movl 12(%esp), %ecx # ecx <- Count |
| movl 8(%esp), %edi # edi <- Buffer |
| movl %ecx, %edx |
| shrl $3, %ecx # # of Qwords to set |
| movb 16(%esp), %al # al <- Value |
| jz @SetBytes |
| movb %al, %ah # ax <- Value | (Value << 8) |
| pushl %ecx |
| pushl %ecx |
| movq %mm0, (%esp) # save mm0 |
| movd %eax, %mm0 |
| pshufw $0x0,%mm0,%mm0 |
| L0: |
| movntq %mm0, (%edi) |
| addl $8, %edi |
| loop L0 |
| mfence |
| movq (%esp), %mm0 # restore mm0 |
| popl %ecx # stack cleanup |
| popl %ecx |
| @SetBytes: |
| andl $7, %edx |
| movl %edx, %ecx |
| rep |
| stosb |
| movl 8(%esp), %eax # eax <- Buffer as return value |
| pop %edi |
| ret |
