mirrors/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-24 10:22:41 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Initial revision

Browse Source
This commit is contained in:
Torbjorn Granlund 1992-02-15 17:52:41 +00:00
parent 00bd61bfb1
commit 7f410893f8
1 changed files with 86 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
sysdeps/rs6000/memcopy.h Normal file
View File

@ -0,0 +1,86 @@
/* Copyright (C) 1991 Free Software Foundation, Inc.
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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <sysdeps/generic/memcopy.h>
#undef OP_T_THRES
#define OP_T_THRES 32
#undef BYTE_COPY_FWD
#define BYTE_COPY_FWD(dst_bp, src_bp, nbytes) \
do \
{ \
size_t __nbytes = nbytes; \
asm volatile("mtspr 1,%2\n" \
"lsx 6,0,%1\n" \
"stsx 6,0,%0" : /* No outputs. */ : \
"b" (dst_bp), "b" (src_bp), "r" (__nbytes) : \
"6", "7", "8", "9", "10", "11", "12", "13"); \
dst_bp += __nbytes; \
src_bp += __nbytes; \
} while (0)
#undef BYTE_COPY_BWD
#define BYTE_COPY_BWD(dst_ep, src_ep, nbytes) \
do \
{ \
size_t __nbytes; \
dst_ep -= __nbytes; \
src_ep -= __nbytes; \
asm volatile("mtspr 1,%2\n" \
"lsx 6,0,%1\n" \
"stsx 6,0,%0" : /* No outputs. */ : \
"b" (dst_ep), "b" (src_ep), "r" (__nbytes) : \
"6", "7", "8", "9", "10", "11", "12", "13"); \
} while (0)
#undef WORD_COPY_FWD
#define WORD_COPY_FWD(dst_bp, src_bp, nbytes_left, nbytes) \
do \
{ \
size_t __nblocks = (nbytes) / 32; \
if (__nblocks != 0) \
asm volatile("mtctr %4\n" \
"lsi 6,%1,32\n" \
"ai %1,%1,32\n" \
"stsi 6,%0,32\n" \
"ai %0,%0,32\n" \
"bdn $-16" : \
"=b" (dst_bp), "=b" (src_bp) : \
"0" (dst_bp), "1" (src_bp), "r" (__nblocks) : \
"6", "7", "8", "9", "10", "11", "12", "13"); \
(nbytes_left) = (nbytes) % 32; \
} while (0)
#undef WORD_COPY_BWD
#define WORD_COPY_BWD(dst_ep, src_ep, nbytes_left, nbytes) \
do \
{ \
size_t __nblocks = (nbytes) / 32; \
if (__nblocks != 0) \
asm volatile("mtctr %4\n" \
"ai %1,%1,-32\n" \
"lsi 6,%1,32\n" \
"ai %0,%0,-32\n" \
"stsi 6,%0,32\n" \
"bdn $-16" : \
"=b" (dst_ep), "=b" (src_ep) : \
"0" (dst_ep), "1" (src_ep), "r" (__nblocks) : \
"6", "7", "8", "9", "10", "11", "12", "13"); \
(nbytes_left) = (nbytes) % 32; \
} while (0)