0707ad30d1
This commit is primarily changes caused by reviewing "sparse" and "checkpatch" output on our sources, so is somewhat noisy, since things like "printk() -> pr_err()" (or whatever) throughout the codebase tend to get tedious to read. Rather than trying to tease apart precisely which things changed due to which type of code review, this commit includes various cleanups in the code: - sparse: Add declarations in headers for globals. - sparse: Fix __user annotations. - sparse: Using gfp_t consistently instead of int. - sparse: removing functions not actually used. - checkpatch: Clean up printk() warnings by using pr_info(), etc.; also avoid partial-line printks except in bootup code. - checkpatch: Use exposed structs rather than typedefs. - checkpatch: Change some C99 comments to C89 comments. In addition, a couple of minor other changes are rolled in to this commit: - Add support for a "raise" instruction to cause SIGFPE, etc., to be raised. - Remove some compat code that is unnecessary when we fully eliminate some of the deprecated syscalls from the generic syscall ABI. - Update the tile_defconfig to reflect current config contents. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/*
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* Copyright 2010 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/module.h>
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void *memmove(void *dest, const void *src, size_t n)
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{
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if ((const char *)src >= (char *)dest + n
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|| (char *)dest >= (const char *)src + n) {
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/* We found no overlap, so let memcpy do all the heavy
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* lifting (prefetching, etc.)
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*/
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return memcpy(dest, src, n);
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}
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if (n != 0) {
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const uint8_t *in;
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uint8_t x;
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uint8_t *out;
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int stride;
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if (src < dest) {
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/* copy backwards */
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in = (const uint8_t *)src + n - 1;
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out = (uint8_t *)dest + n - 1;
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stride = -1;
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} else {
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/* copy forwards */
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in = (const uint8_t *)src;
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out = (uint8_t *)dest;
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stride = 1;
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}
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/* Manually software-pipeline this loop. */
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x = *in;
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in += stride;
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while (--n != 0) {
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*out = x;
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out += stride;
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x = *in;
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in += stride;
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}
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*out = x;
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}
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return dest;
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}
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EXPORT_SYMBOL(memmove);
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