source: trunk/libs/newlib/src/libgloss/bfin/clear_cache_range.c @ 643

Last change on this file since 643 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc

File size: 1.2 KB
Line 
1/*
2 * C library support files for the Blackfin processor
3 *
4 * Copyright (C) 2010 Analog Devices, Inc.
5 *
6 * The authors hereby grant permission to use, copy, modify, distribute,
7 * and license this software and its documentation for any purpose, provided
8 * that existing copyright notices are retained in all copies and that this
9 * notice is included verbatim in any distributions. No written agreement,
10 * license, or royalty fee is required for any of the authorized uses.
11 * Modifications to this software may be copyrighted by their authors
12 * and need not follow the licensing terms described here, provided that
13 * the new terms are clearly indicated on the first page of each file where
14 * they apply.
15 */
16
17/* This is a callback which gcc itself wants to flush jump tables.
18
19   Map it into L1 Text because of anomalies 05-00-0312 and 05-00-0419.  */
20
21__attribute__ ((l1_text))
22void __clear_cache_range (char *beg, char *end)
23{
24  char *ptr = beg;
25  do {
26    __asm__ __volatile__ ("FLUSH [%0++];" : "+a" (ptr) : : "memory");
27  } while (ptr <= end);
28  ptr = beg;
29  __asm__ __volatile__ ("SSYNC;");
30  do {
31    __asm__ __volatile__ ("IFLUSH [%0++];" : "+a" (ptr) : : "memory");
32  } while (ptr <= end);
33}
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