sys/compat/linux/arch/arm/linux_sys_machdep.c

   1 /*      $NetBSD: linux_sys_machdep.c,v 1.12 2006/05/11 11:54:36 yamt 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 __KERNEL_RCSID(0, "$NetBSD: linux_sys_machdep.c,v 1.12 2006/05/11 11:54:36 yamt Exp $");
  33
  34 #include <sys/systm.h>
  35 #include <sys/signalvar.h>
  36
  37 #include <compat/linux/common/linux_types.h>
  38 #include <compat/linux/common/linux_signal.h>
  39 #include <compat/linux/common/linux_siginfo.h>
  40 #include <compat/linux/common/linux_machdep.h>
  41 #include <compat/linux/linux_syscallargs.h>
  42
  43 #include <arm/cpufunc.h>
  44
  45 int
  46 linux_sys_breakpoint(struct lwp *l, const void *v, register_t *retval)
  47 {
  48         ksiginfo_t ksi;
  49
  50         KSI_INIT_TRAP(&ksi);
  51         ksi.ksi_signo = SIGTRAP;
  52         ksi.ksi_code = TRAP_BRKPT;
  53         trapsignal(l, &ksi);
  54         return ERESTART; /* Leave PC pointing back at the breakpoint. */
  55 }
  56
  57 int
  58 linux_sys_cacheflush(struct lwp *l, const struct linux_sys_cacheflush_args *uap, register_t *retval)
  59 {
  60 #ifndef acorn26
  61         /* {
  62                 syscallarg(uintptr_t) from;
  63                 syscallarg(uintptr_t) to;
  64         } */
  65
  66         cpu_icache_sync_range(SCARG(uap, from),
  67             SCARG(uap, to) - SCARG(uap, from) + 1);
  68 #endif
  69         *retval = 0;
  70         return 0;
  71 }