Home | History | Annotate | Line # | Download | only in arm
vectors.S revision 1.3 
      1 /*	$NetBSD: vectors.S,v 1.3 2002/04/03 23:33:28 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1994-1997 Mark Brinicombe
      5  * Copyright (C) 1994 Brini
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by Brini.
     19  * 4. The name of Brini may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL BRINI BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include "assym.h"
     35 #include <machine/asm.h>
     36 
     37 /*
     38  * These are the exception vectors copied down to page 0.
     39  *
     40  * Note that FIQs are special; rather than using a level of
     41  * indirection, we actually copy the FIQ code down into the
     42  * vector page.
     43  */
     44 
     45 	.text
     46 	.align	0
     47 	.global	_C_LABEL(page0), _C_LABEL(page0_data), _C_LABEL(page0_end)
     48 	.global _C_LABEL(fiqvector)
     49 
     50 _C_LABEL(page0):
     51 	ldr	pc, Lreset_target
     52 	ldr	pc, Lundefined_target
     53 	ldr	pc, Lswi_target
     54 	ldr	pc, Lprefetch_abort_target
     55 	ldr	pc, Ldata_abort_target
     56 	ldr	pc, Laddress_exception_target
     57 	ldr	pc, Lirq_target
     58 #ifdef __ARM_FIQ_INDIRECT
     59 	ldr	pc, Lfiq_target
     60 #else
     61 Lfiqvector:
     62 	.set	_C_LABEL(fiqvector), . - _C_LABEL(page0)
     63 	subs	pc, lr, #4
     64 	.org	Lfiqvector + 0x100
     65 #endif
     66 
     67 _C_LABEL(page0_data):
     68 Lreset_target:
     69 	.word	reset_entry
     70 
     71 Lundefined_target:
     72 	.word	undefined_entry
     73 
     74 Lswi_target:
     75 	.word	swi_entry
     76 
     77 Lprefetch_abort_target:
     78 	.word	prefetch_abort_entry
     79 
     80 Ldata_abort_target:
     81 	.word	data_abort_entry
     82 
     83 Laddress_exception_target:
     84 	.word	address_exception_entry
     85 
     86 Lirq_target:
     87 	.word	irq_entry
     88 
     89 #ifdef __ARM_FIQ_INDIRECT
     90 Lfiq_target:
     91 	.word	_C_LABEL(fiqvector)
     92 #else
     93 	.word	0	/* pad it out */
     94 #endif
     95 _C_LABEL(page0_end):
     96 
     97 #ifdef __ARM_FIQ_INDIRECT
     98 	.data
     99 	.align	0
    100 _C_LABEL(fiqvector):
    101 	subs	pc, lr, #4
    102 	.org	_C_LABEL(fiqvector) + 0x100
    103 #endif
    104