undefined.h (2304B) - Raw
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 31 #ifndef _MACHINE__UNDEFINED_H_ 32 #define _MACHINE__UNDEFINED_H_ 33 34 #ifdef _KERNEL 35 36 typedef int (*undef_handler_t)(vm_offset_t, uint32_t, struct trapframe *, 37 uint32_t); 38 39 static inline int 40 mrs_Op0(uint32_t insn) 41 { 42 43 /* op0 is encoded without the top bit in a mrs instruction */ 44 return (2 | ((insn & MRS_Op0_MASK) >> MRS_Op0_SHIFT)); 45 } 46 47 #define MRS_GET(op) \ 48 static inline int \ 49 mrs_##op(uint32_t insn) \ 50 { \ 51 \ 52 return ((insn & MRS_##op##_MASK) >> MRS_##op##_SHIFT); \ 53 } 54 MRS_GET(Op1) 55 MRS_GET(CRn) 56 MRS_GET(CRm) 57 MRS_GET(Op2) 58 59 void undef_init(void); 60 void *install_undef_handler(bool, undef_handler_t); 61 void remove_undef_handler(void *); 62 int undef_insn(u_int, struct trapframe *); 63 64 #endif /* _KERNEL */ 65 66 #endif