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linux_machdep.h revision 1.4 
      1 /*	$NetBSD: linux_machdep.h,v 1.4 2000/12/11 04:55:09 mycroft 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _ALPHA_LINUX_MACHDEP_H
     40 #define _ALPHA_LINUX_MACHDEP_H
     41 
     42 /*
     43  * The Linux sigcontext, pretty much a standard alpha trapframe.
     44  */
     45 struct linux_sigcontext {
     46 	long		sc_onstack;
     47 	long		sc_mask;
     48 	long		sc_pc;
     49 	long		sc_ps;
     50 	long		sc_regs[32];
     51 	long		sc_ownedfp;
     52 	long		sc_fpregs[32];
     53 	unsigned long	sc_fpcr;
     54 	unsigned long	sc_fp_control;
     55 	unsigned long	sc_reserved1, sc_reserved2;
     56 	unsigned long	sc_ssize;
     57 	char *		sc_sbase;
     58 	unsigned long	sc_traparg_a0;
     59 	unsigned long	sc_traparg_a1;
     60 	unsigned long	sc_traparg_a2;
     61 	unsigned long	sc_fp_trap_pc;
     62 	unsigned long	sc_fp_trigger_sum;
     63 	unsigned long	sc_fp_trigger_inst;
     64 };
     65 
     66 struct linux_ucontext {
     67 	u_long			uc_flags;
     68 	struct linux_ucontext	*uc_link;
     69 	linux_old_sigset_t	uc_osf_sigmask;
     70 	linux_stack_t		uc_stack;
     71 	struct linux_sigcontext	uc_mcontext;
     72 	linux_sigset_t		uc_sigmask;
     73 };
     74 
     75 /*
     76  * We make the stack look like Linux expects it when calling a signal
     77  * handler, but use the BSD way of calling the handler and sigreturn().
     78  */
     79 
     80 #define LINUX_INSN_MOV_R30_R16	0x47fe0410
     81 #define LINUX_INSN_LDI_R0	0x201f0000
     82 #define LINUX_INSN_CALLSYS	0x00000083
     83 
     84 struct linux_sigframe {
     85 	struct		linux_sigcontext sf_sc;
     86 	unsigned long	extramask[LINUX__NSIG_WORDS-1];
     87 	unsigned int	retcode[3];
     88 };
     89 
     90 struct linux_rt_sigframe {
     91 	struct linux_siginfo	info;
     92 	struct linux_ucontext	uc;
     93 	unsigned int		retcode[3];
     94 };
     95 
     96 #ifdef _KERNEL
     97 __BEGIN_DECLS
     98 void setup_linux_rt_sigframe __P((struct trapframe *, int, sigset_t *));
     99 void setup_linux_sigframe __P((struct trapframe *, int, sigset_t *));
    100 int linux_restore_sigcontext __P((struct proc *, struct linux_sigcontext,
    101 				  sigset_t *));
    102 void linux_sendsig __P((sig_t, int, sigset_t *, u_long));
    103 dev_t linux_fakedev __P((dev_t));
    104 __END_DECLS
    105 #endif /* !_KERNEL */
    106 
    107 #endif /* _ALPHA_LINUX_MACHDEP_H */
    108