mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-20 07:14:26 +01:00
78f38c60bc
confusion, the _setjmp.S in libstand was never being used and was instead being shadowed by the libc version. Since the libc version now uses FPRs, it caused loader to crash.
104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
/*-
|
|
* Copyright (C) 1995-1997, 1999 Wolfgang Solfrank.
|
|
* Copyright (C) 1995-1997, 1999 TooLs GmbH.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by TooLs GmbH.
|
|
* 4. The name of TooLs GmbH may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
|
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $NetBSD: syncicache.c,v 1.2 1999/05/05 12:36:40 tsubai Exp $
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#if defined(_KERNEL) || defined(_STANDALONE)
|
|
#include <sys/time.h>
|
|
#include <sys/proc.h>
|
|
#include <vm/vm.h>
|
|
#endif
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/md_var.h>
|
|
|
|
#ifdef _STANDALONE
|
|
int cacheline_size = 32;
|
|
#endif
|
|
|
|
#if !defined(_KERNEL) && !defined(_STANDALONE)
|
|
#include <stdlib.h>
|
|
|
|
int cacheline_size = 0;
|
|
|
|
static void getcachelinesize(void);
|
|
|
|
static void
|
|
getcachelinesize()
|
|
{
|
|
static int cachemib[] = { CTL_MACHDEP, CPU_CACHELINE };
|
|
int clen;
|
|
|
|
clen = sizeof(cacheline_size);
|
|
|
|
if (sysctl(cachemib, sizeof(cachemib) / sizeof(cachemib[0]),
|
|
&cacheline_size, &clen, NULL, 0) < 0 || !cacheline_size) {
|
|
abort();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void
|
|
__syncicache(void *from, int len)
|
|
{
|
|
int l, off;
|
|
char *p;
|
|
|
|
#if !defined(_KERNEL) && !defined(_STANDALONE)
|
|
if (!cacheline_size)
|
|
getcachelinesize();
|
|
#endif
|
|
|
|
off = (u_int)from & (cacheline_size - 1);
|
|
l = len += off;
|
|
p = (char *)from - off;
|
|
|
|
do {
|
|
__asm __volatile ("dcbst 0,%0" :: "r"(p));
|
|
p += cacheline_size;
|
|
} while ((l -= cacheline_size) > 0);
|
|
__asm __volatile ("sync");
|
|
p = (char *)from - off;
|
|
do {
|
|
__asm __volatile ("icbi 0,%0" :: "r"(p));
|
|
p += cacheline_size;
|
|
} while ((len -= cacheline_size) > 0);
|
|
__asm __volatile ("sync; isync");
|
|
}
|
|
|