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linux_sys_machdep.c revision 1.2 
      1 /*	$NetBSD: linux_sys_machdep.c,v 1.2 2002/01/27 15:27:33 bjh21 Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 Ben Harris
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/param.h>
     31 
     32 __RCSID("$Id: linux_sys_machdep.c,v 1.2 2002/01/27 15:27:33 bjh21 Exp $");
     33 
     34 #include <sys/systm.h>
     35 
     36 #include <compat/linux/common/linux_types.h>
     37 #include <compat/linux/common/linux_signal.h>
     38 #include <compat/linux/common/linux_siginfo.h>
     39 #include <compat/linux/common/linux_machdep.h>
     40 #include <compat/linux/linux_syscallargs.h>
     41 
     42 #include <arm/cpufunc.h>
     43 
     44 int
     45 linux_sys_breakpoint(struct proc *p, void *v, register_t *retval)
     46 {
     47 
     48 	trapsignal(p, SIGTRAP, 0);
     49 	return ERESTART; /* Leave PC pointing back at the breakpoint. */
     50 }
     51 
     52 int
     53 linux_sys_cacheflush(struct proc *p, void *v, register_t *retval)
     54 {
     55 	struct linux_sys_cacheflush_args /* {
     56 		syscallarg(uintptr_t) from;
     57 		syscallarg(uintptr_t) to;
     58 	} */ *uap = v;
     59 
     60 #ifndef arm26
     61 	cpu_cache_syncI_rng(SCARG(uap, from),
     62 	    SCARG(uap, to) - SCARG(uap, from) + 1);
     63 #endif
     64 	*retval = 0;
     65 	return 0;
     66 }
     67