1#
2# ConvertAsm.py: Automatically generated from SetMem.asm
3#
4#------------------------------------------------------------------------------
5#
6# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
7# This program and the accompanying materials
8# are licensed and made available under the terms and conditions of the BSD License
9# which accompanies this distribution.  The full text of the license may be found at
10# http://opensource.org/licenses/bsd-license.php.
11#
12# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14#
15# Module Name:
16#
17#   SetMem.S
18#
19# Abstract:
20#
21#   SetMem function
22#
23# Notes:
24#
25#------------------------------------------------------------------------------
26
27
28#------------------------------------------------------------------------------
29#  VOID *
30#  EFIAPI
31#  InternalMemSetMem (
32#    IN VOID   *Buffer,
33#    IN UINTN  Count,
34#    IN UINT8  Value
35#    )
36#------------------------------------------------------------------------------
37ASM_GLOBAL ASM_PFX(InternalMemSetMem)
38ASM_PFX(InternalMemSetMem):
39    pushq   %rdi
40    movq    %rcx, %rdi                  # rdi <- Buffer
41    movb    %r8b, %al                   # al <- Value
42    movq    %rdi, %r9                   # r9 <- Buffer as return value
43    xorq    %rcx, %rcx
44    subq    %rdi, %rcx
45    andq    $15, %rcx                   # rcx + rdi aligns on 16-byte boundary
46    jz      L0
47    cmpq    %rdx, %rcx
48    cmova   %rdx, %rcx
49    subq    %rcx, %rdx
50    rep     stosb
51L0:
52    movq    %rdx, %rcx
53    andq    $15, %rdx
54    shrq    $4, %rcx
55    jz      L_SetBytes
56    movb    %al, %ah                    # ax <- Value repeats twice
57    movdqa  %xmm0, 0x10(%rsp)           # save xmm0
58    movd    %eax, %xmm0                 # xmm0[0..16] <- Value repeats twice
59    pshuflw $0, %xmm0, %xmm0            # xmm0[0..63] <- Value repeats 8 times
60    movlhps %xmm0, %xmm0                # xmm0 <- Value repeats 16 times
61L1:
62    movntdq %xmm0, (%rdi)               # rdi should be 16-byte aligned
63    add     $16, %rdi
64    loop    L1
65    mfence
66    movdqa  0x10(%rsp), %xmm0           # restore xmm0
67L_SetBytes:
68    movl    %edx, %ecx                  # high 32 bits of rcx are always zero
69    rep     stosb
70    movq    %r9, %rax                   # rax <- Return value
71    popq    %rdi
72    ret
73