| /***************************************************************************** |
| * Fast function for filling cache-inhibited memory regions via h-call. |
| * |
| * Copyright 2015 Red Hat, Inc. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the BSD License |
| * which accompanies this distribution, and is available at |
| * http://www.opensource.org/licenses/bsd-license.php |
| * |
| * Contributors: |
| * Thomas Huth, Red Hat Inc. - initial implementation |
| *****************************************************************************/ |
| |
| #include <cache.h> |
| #include <string.h> |
| |
| typedef unsigned long type_u; |
| |
| /** |
| * fast_rfill is the implementation of the FAST_RFILL macro with h-calls. |
| * This is defined here instead of cache.h since we need a temporary |
| * local buffer - and that caused stack size problems in engine() when |
| * we used it directly in the FAST_RFILL macro. |
| */ |
| void fast_rfill(char *dst, unsigned long size, char pat) |
| { |
| type_u buf[64]; |
| |
| memset(buf, pat, size < sizeof(buf) ? size : sizeof(buf)); |
| |
| while (size > sizeof(buf)) { |
| FAST_MRMOVE(buf, dst, sizeof(buf)); |
| dst += sizeof(buf); |
| size -= sizeof(buf); |
| } |
| FAST_MRMOVE(buf, dst, size); |
| } |