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Diffstat (limited to 'sysdeps/i386/i586/memcopy.h')
| -rw-r--r-- | sysdeps/i386/i586/memcopy.h | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/sysdeps/i386/i586/memcopy.h b/sysdeps/i386/i586/memcopy.h deleted file mode 100644 index 39f020a746..0000000000 --- a/sysdeps/i386/i586/memcopy.h +++ /dev/null @@ -1,95 +0,0 @@ -/* memcopy.h -- definitions for memory copy functions. Pentium version. - Copyright (C) 1994-2017 Free Software Foundation, Inc. - Contributed by Torbjorn Granlund (tege@sics.se). - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -/* Get the i386 definitions. We will override some of them below. */ -#include <sysdeps/i386/memcopy.h> - -/* Written like this, the Pentium pipeline can execute the loop at a - sustained rate of 2 instructions/clock, or asymptotically 480 - Mbytes/second at 60Mhz. */ - -#undef WORD_COPY_FWD -#define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes) \ - do \ - { \ - asm volatile ("subl $32,%2\n" \ - "js 2f\n" \ - "movl 0(%0),%%edx\n" /* alloc dest line */ \ - "1:\n" \ - "movl 28(%0),%%eax\n" /* alloc dest line */ \ - "subl $32,%2\n" /* decr loop count */ \ - "movl 0(%1),%%eax\n" /* U pipe */ \ - "movl 4(%1),%%edx\n" /* V pipe */ \ - "movl %%eax,0(%0)\n" /* U pipe */ \ - "movl %%edx,4(%0)\n" /* V pipe */ \ - "movl 8(%1),%%eax\n" \ - "movl 12(%1),%%edx\n" \ - "movl %%eax,8(%0)\n" \ - "movl %%edx,12(%0)\n" \ - "movl 16(%1),%%eax\n" \ - "movl 20(%1),%%edx\n" \ - "movl %%eax,16(%0)\n" \ - "movl %%edx,20(%0)\n" \ - "movl 24(%1),%%eax\n" \ - "movl 28(%1),%%edx\n" \ - "movl %%eax,24(%0)\n" \ - "movl %%edx,28(%0)\n" \ - "leal 32(%1),%1\n" /* update src ptr */ \ - "leal 32(%0),%0\n" /* update dst ptr */ \ - "jns 1b\n" \ - "2: addl $32,%2" : \ - "=r" (dst_bp), "=r" (src_bp), "=r" (nbytes_left) : \ - "0" (dst_bp), "1" (src_bp), "2" (nbytes) : \ - "ax", "dx"); \ - } while (0) - -#undef WORD_COPY_BWD -#define WORD_COPY_BWD(dst_ep, src_ep, nbytes_left, nbytes) \ - do \ - { \ - asm volatile ("subl $32,%2\n" \ - "js 2f\n" \ - "movl -4(%0),%%edx\n" \ - "1:\n" \ - "movl -32(%0),%%eax\n" \ - "subl $32,%2\n" \ - "movl -4(%1),%%eax\n" \ - "movl -8(%1),%%edx\n" \ - "movl %%eax,-4(%0)\n" \ - "movl %%edx,-8(%0)\n" \ - "movl -12(%1),%%eax\n" \ - "movl -16(%1),%%edx\n" \ - "movl %%eax,-12(%0)\n" \ - "movl %%edx,-16(%0)\n" \ - "movl -20(%1),%%eax\n" \ - "movl -24(%1),%%edx\n" \ - "movl %%eax,-20(%0)\n" \ - "movl %%edx,-24(%0)\n" \ - "movl -28(%1),%%eax\n" \ - "movl -32(%1),%%edx\n" \ - "movl %%eax,-28(%0)\n" \ - "movl %%edx,-32(%0)\n" \ - "leal -32(%1),%1\n" \ - "leal -32(%0),%0\n" \ - "jns 1b\n" \ - "2: addl $32,%2" : \ - "=r" (dst_ep), "=r" (src_ep), "=r" (nbytes_left) : \ - "0" (dst_ep), "1" (src_ep), "2" (nbytes) : \ - "ax", "dx"); \ - } while (0) |