sysdeps/x86_64/multiarch/memset-sse2-unaligned-erms.S

   1 /* memset with SSE2.
   2    All versions must be listed in ifunc-impl-list.c.
   3    Copyright (C) 2014-2022 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <isa-level.h>
  21
  22 /* MINIMUM_X86_ISA_LEVEL <= 2 because there is no V2 implementation
  23    so we need this to build for ISA V2 builds. */
  24 #if ISA_SHOULD_BUILD (2)
  25
  26 # include <sysdep.h>
  27 # define USE_WITH_SSE2  1
  28
  29 # define VEC_SIZE       16
  30 # define MOV_SIZE       3
  31 # define RET_SIZE       1
  32
  33 # define VEC(i)         xmm##i
  34 # define VMOVU     movups
  35 # define VMOVA     movaps
  36
  37 # define MEMSET_SET_VEC0_AND_SET_RETURN(d, r) \
  38   movd d, %xmm0; \
  39   movq r, %rax; \
  40   punpcklbw %xmm0, %xmm0; \
  41   punpcklwd %xmm0, %xmm0; \
  42   pshufd $0, %xmm0, %xmm0
  43
  44 # define WMEMSET_SET_VEC0_AND_SET_RETURN(d, r) \
  45   movd d, %xmm0; \
  46   pshufd $0, %xmm0, %xmm0; \
  47   movq r, %rax
  48
  49 # define MEMSET_VDUP_TO_VEC0_HIGH()
  50 # define MEMSET_VDUP_TO_VEC0_LOW()
  51
  52 # define WMEMSET_VDUP_TO_VEC0_HIGH()
  53 # define WMEMSET_VDUP_TO_VEC0_LOW()
  54
  55 # define SECTION(p)             p
  56
  57 # ifndef MEMSET_SYMBOL
  58 #  define MEMSET_SYMBOL(p,s)    p##_sse2_##s
  59 # endif
  60
  61 # ifndef WMEMSET_SYMBOL
  62 #  define WMEMSET_SYMBOL(p,s)   p##_sse2_##s
  63 # endif
  64
  65 # include "memset-vec-unaligned-erms.S"
  66
  67 #endif