0,0 → 1,90 |
/* |
* Copyright (c) 2007 Pavel Jancik, Michal Kebrt |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup arm32mm |
* @{ |
*/ |
/** @file |
*/ |
#ifndef KERN_arm32_PAGE_FAULT_H_ |
#define KERN_arm32_PAGE_FAULT_H |
|
#include <arch/types.h> |
|
/** |
* Decribes structure of fault status register in coprocessor 15 |
*/ |
typedef struct { |
unsigned status : 3; |
unsigned domain : 4; |
unsigned zero : 1; |
unsigned should_be_zero : 24; |
} __attribute__ ((packed)) fault_status_t; |
|
/** |
* Help union used for overcasting integer value into fault_status_t type |
*/ |
typedef union { |
fault_status_t fsr; |
uint32_t dummy; |
} fault_status_union_t; |
|
/** |
* Very simplyfied description of instruction code structure intended for |
* recognising memmory access of instruction ( reads or writes into memmory) |
* more details: see ARM architecture preference |
* chapter:3.1 Instruction set encoding |
*/ |
typedef struct { |
unsigned dummy1 : 4; |
unsigned bit4 : 1; |
unsigned bits567 : 3; |
unsigned dummy : 12; |
unsigned access : 1; |
unsigned opcode : 4; |
unsigned instr_type : 3; |
unsigned condition : 4; |
} __attribute__ ((packed)) instruction_t; |
|
/** |
* Help union used for overcasting ip register (uint_32_t) value into |
* instruction_t pointer |
*/ |
typedef union { |
instruction_t* instr; |
uint32_t ip; |
} instruction_union_t; |
|
extern void prefetch_abort(int n, istate_t *istate); |
extern void data_abort(int n, istate_t *istate); |
|
#endif |
|
/** @} |
*/ |
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