undefined.h

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    1 /*-
    2  * Copyright (c) 2017 Andrew Turner
    3  * All rights reserved.
    4  *
    5  * This software was developed by SRI International and the University of
    6  * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
    7  * ("CTSRD"), as part of the DARPA CRASH research programme.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * $FreeBSD$
   31  */
   32 
   33 #ifndef _MACHINE__UNDEFINED_H_
   34 #define _MACHINE__UNDEFINED_H_
   35 
   36 #ifdef _KERNEL
   37 
   38 typedef int (*undef_handler_t)(vm_offset_t, uint32_t, struct trapframe *,
   39     uint32_t);
   40 
   41 static inline int
   42 mrs_Op0(uint32_t insn)
   43 {
   44 
   45         /* op0 is encoded without the top bit in a mrs instruction */
   46         return (2 | ((insn & MRS_Op0_MASK) >> MRS_Op0_SHIFT));
   47 }
   48 
   49 #define MRS_GET(op)                                             \
   50 static inline int                                               \
   51 mrs_##op(uint32_t insn)                                         \
   52 {                                                               \
   53                                                                 \
   54         return ((insn & MRS_##op##_MASK) >> MRS_##op##_SHIFT);  \
   55 }
   56 MRS_GET(Op1)
   57 MRS_GET(CRn)
   58 MRS_GET(CRm)
   59 MRS_GET(Op2)
   60 
   61 void undef_init(void);
   62 void *install_undef_handler(bool, undef_handler_t);
   63 void remove_undef_handler(void *);
   64 int undef_insn(u_int, struct trapframe *);
   65 
   66 #endif /* _KERNEL */
   67 
   68 #endif

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FreeBSD/Linux Kernel Cross Reference sys/arm64/include/undefined.h

FreeBSD/Linux Kernel Cross Reference
sys/arm64/include/undefined.h