The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/arm/irq_dispatch.S

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    1 /*      $NetBSD: irq_dispatch.S,v 1.5 2003/10/30 08:57:24 scw Exp $     */
    2 
    3 /*-
    4  * Copyright (c) 2002 Fujitsu Component Limited
    5  * Copyright (c) 2002 Genetec Corporation
    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. Neither the name of The Fujitsu Component Limited nor the name of
   17  *    Genetec corporation may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
   21  * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
   22  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   23  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   24  * DISCLAIMED.  IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
   25  * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   29  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  *
   34  */
   35 
   36 /*-
   37  * Copyright (c) 2002, 2003 Wasabi Systems, Inc.
   38  * All rights reserved.
   39  *
   40  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
   41  *
   42  * Redistribution and use in source and binary forms, with or without
   43  * modification, are permitted provided that the following conditions
   44  * are met:
   45  * 1. Redistributions of source code must retain the above copyright
   46  *    notice, this list of conditions and the following disclaimer.
   47  * 2. Redistributions in binary form must reproduce the above copyright
   48  *    notice, this list of conditions and the following disclaimer in the
   49  *    documentation and/or other materials provided with the distribution.
   50  * 3. All advertising materials mentioning features or use of this software
   51  *    must display the following acknowledgement:
   52  *      This product includes software developed for the NetBSD Project by
   53  *      Wasabi Systems, Inc.
   54  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
   55  *    or promote products derived from this software without specific prior
   56  *    written permission.
   57  *
   58  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
   59  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   60  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   61  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
   62  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   63  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   64  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   65  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   66  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   67  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   68  * POSSIBILITY OF SUCH DAMAGE.
   69  */
   70 
   71 #include "assym.s"
   72 #include <machine/asm.h>
   73 #include <machine/asmacros.h>
   74 #include <machine/armreg.h>
   75 __FBSDID("$FreeBSD: releng/6.0/sys/arm/arm/irq_dispatch.S 139735 2005-01-05 21:58:49Z imp $");
   76 
   77 /*
   78  * irq_entry:
   79  *      Main entry point for the IRQ vector.  This is a generic version
   80  *      which can be used by different platforms.
   81  */
   82         .text
   83         .align  0
   84 
   85 .Lcurrent_intr_depth:
   86         .word   _C_LABEL(current_intr_depth)
   87 AST_LOCALS
   88 
   89 ASENTRY_NP(irq_entry)
   90         sub     lr, lr, #0x00000004     /* Adjust the lr */
   91         PUSHFRAMEINSVC                  /* Push an interrupt frame */
   92         mov     r0, sp                  /* arg for dispatcher */
   93 
   94         mov     r1, #0
   95         bl      _C_LABEL(arm_handler_execute)
   96 
   97         DO_AST
   98         PULLFRAMEFROMSVCANDEXIT
   99         movs    pc, lr                  /* Exit */
  100 
  101         .bss
  102         .align  0
  103 
  104 
  105         .global _C_LABEL(intrnames), _C_LABEL(eintrnames)
  106         .global _C_LABEL(intrcnt), _C_LABEL(eintrcnt)
  107 _C_LABEL(intrnames): 
  108         .space NIRQ * (MAXCOMLEN + 1)
  109 _C_LABEL(eintrnames):
  110 _C_LABEL(intrcnt):
  111         .space NIRQ * 4
  112 _C_LABEL(eintrcnt):
  113 
  114         .global _C_LABEL(current_intr_depth)
  115 _C_LABEL(current_intr_depth):
  116         .word   0
  117 

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