1/*  *********************************************************************
2    *  Broadcom Common Firmware Environment (CFE)
3    *
4    *  Exception Handler definitions		File: lib_try.h
5    *
6    *  Exception handler functions and constants
7    *
8    *  Author:  Binh Vo
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#ifndef _LIB_SETJMP_H
48#include "lib_setjmp.h"
49#endif
50
51#ifndef _LIB_QUEUE_H
52#include "lib_queue.h"
53#endif
54
55
56#define EXC_NORMAL_RETURN 0
57#define EXC_CHAIN_EXC     1
58
59
60typedef struct jmpbuf_s {
61  queue_t stack;
62  jmp_buf jmpbuf;
63} jmpbuf_t;
64
65typedef struct exc_handler_s {
66  int catch_exc;
67  int chain_exc;
68  queue_t jmpbuf_stack;
69} exc_handler_t;
70
71extern exc_handler_t exc_handler;
72
73jmpbuf_t *exc_initialize_block(void);
74void exc_cleanup_block(jmpbuf_t *);
75void exc_cleanup_handler(jmpbuf_t *, int);
76void exc_longjmp_handler(void);
77
78#define exc_try(jb) (lib_setjmp(((jb)->jmpbuf)))
79
80#define exc_init() exc_handler.catch_exc = 0; q_init( &(exc_handler.jmpbuf_stack));
81
82
83