release/src-rt-6.x.4708/cfe/cfe/arch/arm/common/include/exchandler.h

   1 /*  *********************************************************************
   2     *  Broadcom Common Firmware Environment (CFE)
   3     *
   4     *  Exception Handler definitions            File: exchandler.h
   5     *
   6     *  Exception handler functions and constants
   7     *
   8     *  Author:  Binh Vo (binh@broadcom.com)
   9     *
  10     *********************************************************************
  11     *
  12     *  Copyright 2000,2001,2002,2003
  13     *  Broadcom Corporation. All rights reserved.
  14     *
  15     *  This software is furnished under license and may be used and
  16     *  copied only in accordance with the following terms and
  17     *  conditions.  Subject to these conditions, you may download,
  18     *  copy, install, use, modify and distribute modified or unmodified
  19     *  copies of this software in source and/or binary form.  No title
  20     *  or ownership is transferred hereby.
  21     *
  22     *  1) Any source code used, modified or distributed must reproduce
  23     *     and retain this copyright notice and list of conditions
  24     *     as they appear in the source file.
  25     *
  26     *  2) No right is granted to use any trade name, trademark, or
  27     *     logo of Broadcom Corporation.  The "Broadcom Corporation"
  28     *     name may not be used to endorse or promote products derived
  29     *     from this software without the prior written permission of
  30     *     Broadcom Corporation.
  31     *
  32     *  3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
  33     *     IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
  34     *     WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  35     *     PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
  36     *     SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
  37     *     PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT,
  38     *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  39     *     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  40     *     GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  41     *     BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  42     *     OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  43     *     TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF
  44     *     THE POSSIBILITY OF SUCH DAMAGE.
  45     ********************************************************************* */
  46
  47
  48 #ifndef _LIB_SETJMP_H
  49 #include "lib_setjmp.h"
  50 #endif
  51
  52 #ifndef _LIB_QUEUE_H
  53 #include "lib_queue.h"
  54 #endif
  55
  56 #define MEM_BYTE     1
  57 #define MEM_HALFWORD 2
  58 #define MEM_WORD     3
  59 #define MEM_QUADWORD 4
  60
  61 #define EXC_NORMAL_RETURN 0
  62 #define EXC_CHAIN_EXC     1
  63
  64 typedef struct jmpbuf_s {
  65   queue_t stack;
  66   jmp_buf jmpbuf;
  67 } jmpbuf_t;
  68
  69 typedef struct exc_handler_s {
  70   int catch_exc;
  71   int chain_exc;
  72   queue_t jmpbuf_stack;
  73 } exc_handler_t;
  74
  75 extern exc_handler_t exc_handler;
  76
  77 jmpbuf_t *exc_initialize_block(void);
  78 void exc_cleanup_block(jmpbuf_t *);
  79 void exc_cleanup_handler(jmpbuf_t *, int);
  80 void exc_longjmp_handler(void);
  81 int mem_peek(void*, long, int);
  82 int mem_poke(long, uint64_t, int);
  83
  84
  85 #define exc_try(jb) (lib_setjmp(((jb)->jmpbuf)))