sys/compat/linux/arch/alpha/linux_machdep.h

   1 /*      $NetBSD: linux_machdep.h,v 1.10 2005/11/11 23:22:08 chs Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Eric Haszlakiewicz.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _ALPHA_LINUX_MACHDEP_H
  33 #define _ALPHA_LINUX_MACHDEP_H
  34
  35 #include <compat/linux/common/linux_types.h>
  36 #include <compat/linux/common/linux_signal.h>
  37 #include <compat/linux/common/linux_siginfo.h>
  38
  39 /*
  40  * The Linux sigcontext, pretty much a standard alpha trapframe.
  41  */
  42 struct linux_sigcontext {
  43         long            sc_onstack;
  44         long            sc_mask;
  45         long            sc_pc;
  46         long            sc_ps;
  47         long            sc_regs[32];
  48         long            sc_ownedfp;
  49         long            sc_fpregs[32];
  50         unsigned long   sc_fpcr;
  51         unsigned long   sc_fp_control;
  52         unsigned long   sc_reserved1, sc_reserved2;
  53         unsigned long   sc_ssize;
  54         char *          sc_sbase;
  55         unsigned long   sc_traparg_a0;
  56         unsigned long   sc_traparg_a1;
  57         unsigned long   sc_traparg_a2;
  58         unsigned long   sc_fp_trap_pc;
  59         unsigned long   sc_fp_trigger_sum;
  60         unsigned long   sc_fp_trigger_inst;
  61 };
  62
  63 struct linux_ucontext {
  64         u_long                  uc_flags;
  65         struct linux_ucontext   *uc_link;
  66         linux_old_sigset_t      uc_osf_sigmask;
  67         linux_stack_t           uc_stack;
  68         struct linux_sigcontext uc_mcontext;
  69         linux_sigset_t          uc_sigmask;
  70 };
  71
  72 /*
  73  * We make the stack look like Linux expects it when calling a signal
  74  * handler, but use the BSD way of calling the handler and sigreturn().
  75  */
  76
  77 #define LINUX_INSN_MOV_R30_R16  0x47fe0410
  78 #define LINUX_INSN_LDI_R0       0x201f0000
  79 #define LINUX_INSN_CALLSYS      0x00000083
  80
  81 struct linux_sigframe {
  82         struct          linux_sigcontext sf_sc;
  83         unsigned long   extramask[LINUX__NSIG_WORDS-1];
  84         unsigned int    retcode[3];
  85 };
  86
  87 struct linux_rt_sigframe {
  88         struct linux_siginfo    info;
  89         struct linux_ucontext   uc;
  90         unsigned int            retcode[3];
  91 };
  92
  93 #ifdef _KERNEL
  94 __BEGIN_DECLS
  95 void setup_linux_rt_sigframe(struct trapframe *, int, const sigset_t *);
  96 void setup_linux_sigframe(struct trapframe *, int, const sigset_t *);
  97 int linux_restore_sigcontext(struct lwp *, struct linux_sigcontext,
  98                                   sigset_t *);
  99 void linux_syscall_intern(struct proc *);
 100 __END_DECLS
 101 #endif /* !_KERNEL */
 102
 103 #endif /* _ALPHA_LINUX_MACHDEP_H */