From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/v850/lib/memset.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 arch/v850/lib/memset.c (limited to 'arch/v850/lib/memset.c') diff --git a/arch/v850/lib/memset.c b/arch/v850/lib/memset.c new file mode 100644 index 00000000000..d1b2ad821b1 --- /dev/null +++ b/arch/v850/lib/memset.c @@ -0,0 +1,68 @@ +/* + * arch/v850/lib/memset.c -- Memory initialization + * + * Copyright (C) 2001,02,04 NEC Corporation + * Copyright (C) 2001,02,04 Miles Bader + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader + */ + +#include + +void *memset (void *dst, int val, __kernel_size_t count) +{ + if (count) { + register unsigned loop; + register void *ptr asm ("ep") = dst; + + /* replicate VAL into a long. */ + val &= 0xff; + val |= val << 8; + val |= val << 16; + + /* copy initial unaligned bytes. */ + if ((long)ptr & 1) { + *(char *)ptr = val; + ptr = (void *)((char *)ptr + 1); + count--; + } + if (count > 2 && ((long)ptr & 2)) { + *(short *)ptr = val; + ptr = (void *)((short *)ptr + 1); + count -= 2; + } + + /* 32-byte copying loop. */ + for (loop = count / 32; loop; loop--) { + asm ("sst.w %0, 0[ep]; sst.w %0, 4[ep];" + "sst.w %0, 8[ep]; sst.w %0, 12[ep];" + "sst.w %0, 16[ep]; sst.w %0, 20[ep];" + "sst.w %0, 24[ep]; sst.w %0, 28[ep]" + :: "r" (val) : "memory"); + ptr += 32; + } + count %= 32; + + /* long copying loop. */ + for (loop = count / 4; loop; loop--) { + *(long *)ptr = val; + ptr = (void *)((long *)ptr + 1); + } + count %= 4; + + /* finish up with any trailing bytes. */ + if (count & 2) { + *(short *)ptr = val; + ptr = (void *)((short *)ptr + 1); + } + if (count & 1) { + *(char *)ptr = val; + } + } + + return dst; +} -- cgit v1.2.3