diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:31:57 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:31:57 +0100 |
commit | a9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch) | |
tree | 886e75fdfd09690cd262ca69cb7f5d1d42b48602 /arch/sh/lib64/memcpy.c | |
parent | b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff) | |
parent | 6a94cb73064c952255336cc57731904174b2c58f (diff) |
Merge branch 'linus' into stackprotector
Conflicts:
arch/x86/include/asm/pda.h
kernel/fork.c
Diffstat (limited to 'arch/sh/lib64/memcpy.c')
-rw-r--r-- | arch/sh/lib64/memcpy.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/arch/sh/lib64/memcpy.c b/arch/sh/lib64/memcpy.c deleted file mode 100644 index fba436a92bfa..000000000000 --- a/arch/sh/lib64/memcpy.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - * Copyright (C) 2002 Mark Debbage (Mark.Debbage@superh.com) - * - * May be copied or modified under the terms of the GNU General Public - * License. See linux/COPYING for more information. - * - */ - -#include <linux/types.h> -#include <asm/string.h> - -// This is a simplistic optimization of memcpy to increase the -// granularity of access beyond one byte using aligned -// loads and stores. This is not an optimal implementation -// for SH-5 (especially with regard to prefetching and the cache), -// and a better version should be provided later ... - -void *memcpy(void *dest, const void *src, size_t count) -{ - char *d = (char *) dest, *s = (char *) src; - - if (count >= 32) { - int i = 8 - (((unsigned long) d) & 0x7); - - if (i != 8) - while (i-- && count--) { - *d++ = *s++; - } - - if (((((unsigned long) d) & 0x7) == 0) && - ((((unsigned long) s) & 0x7) == 0)) { - while (count >= 32) { - unsigned long long t1, t2, t3, t4; - t1 = *(unsigned long long *) (s); - t2 = *(unsigned long long *) (s + 8); - t3 = *(unsigned long long *) (s + 16); - t4 = *(unsigned long long *) (s + 24); - *(unsigned long long *) (d) = t1; - *(unsigned long long *) (d + 8) = t2; - *(unsigned long long *) (d + 16) = t3; - *(unsigned long long *) (d + 24) = t4; - d += 32; - s += 32; - count -= 32; - } - while (count >= 8) { - *(unsigned long long *) d = - *(unsigned long long *) s; - d += 8; - s += 8; - count -= 8; - } - } - - if (((((unsigned long) d) & 0x3) == 0) && - ((((unsigned long) s) & 0x3) == 0)) { - while (count >= 4) { - *(unsigned long *) d = *(unsigned long *) s; - d += 4; - s += 4; - count -= 4; - } - } - - if (((((unsigned long) d) & 0x1) == 0) && - ((((unsigned long) s) & 0x1) == 0)) { - while (count >= 2) { - *(unsigned short *) d = *(unsigned short *) s; - d += 2; - s += 2; - count -= 2; - } - } - } - - while (count--) { - *d++ = *s++; - } - - return d; -} |