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annotate gsm-fw/riviera/support/exception.h @ 992:a7b0b426f9ca

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target-utils: boot ROM UART autodetection revamped The new implementation should work with both the familiar Calypso C035 boot ROM version found in our regular targets as well as the older Calypso F741979B version found on the vintage D-Sample board.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Wed, 30 Dec 2015 21:28:41 +0000
parents afceeeb2cba1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 ******************************
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3 *
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4 *
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5 * Initialial version: Laurent Deniau, Laurent.Deniau@cern.ch
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6 *
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7 * For more information, please see the paper:
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8 * http://cern.ch/Laurent.Deniau/html/oopc/exception.html
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9 *
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10 * -----------------------------------------------------------
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11 *
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12 * Strong rework and adaption to riviera by Christophe Favergeon
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13 *
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14 ******************************
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15 */
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16
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17 #ifndef RVF_EXCEPTION_H
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18 #define RVF_EXCEPTION_H
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19
119
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20 #include "../rvf/rvf_api.h"
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21 #include "../rvf/rvf_target.h"
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22
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23 #include <string.h>
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24
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25
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26
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27 //#ifndef __STDC__
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28 //# error "exception.h needs ISO C compiler to work properly"
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29 //#endif
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30
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31 #include <setjmp.h>
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32
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33 typedef enum K_RVF_EXCEPTIONS { E_invalid=1, E_not_enough_memory,E_unknown } T_RVF_EXCEPTIONS;
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34
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35 typedef void (*T_RVF_RELEASE_PROTECTED_POINTER)(void *p);
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36
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37 /*
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38 choose context savings
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39 */
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40
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41 #define rvf_save_context_buffer_(context) setjmp(context)
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42 #define rvf_restore_context_buffer_(context, val) longjmp(context, val)
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43
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44 /*
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45 some hidden types used to handle exceptions
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46 */
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47
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48 /* type of stack of protected pointer */
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49 struct _protectedPtr_ {
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50 struct _protectedPtr_ *next;
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51 struct _protectedPtr_ *previous;
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52 void *ptr;
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53 T_RVF_RELEASE_PROTECTED_POINTER func;
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54 };
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55
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56 /* type of stack of exception */
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57 struct _exceptionContext_ {
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58 struct _exceptionContext_ *next;
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59 struct _protectedPtr_ *stack;
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60 jmp_buf context;
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61 };
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62
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63 extern struct _exceptionContext_ *const _returnExceptionContext_[MAX_RVF_TASKS];
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64 extern struct _exceptionContext_ *_currentExceptionContext_[MAX_RVF_TASKS];
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65
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66 /* exception keywords */
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67 #define try \
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68 do { \
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69 struct _exceptionContext_ _localExceptionContext_ ;\
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70 memset(&_localExceptionContext_,0,sizeof(struct _exceptionContext_));\
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71 _localExceptionContext_.next=_currentExceptionContext_[rvf_get_taskid()];\
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72 _currentExceptionContext_[rvf_get_taskid()] = &_localExceptionContext_; \
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73 do { \
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74 int const exception = \
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75 rvf_save_context_buffer_(_currentExceptionContext_[rvf_get_taskid()]->context); \
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76 if (!exception) {
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77
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78 #define catch(except) \
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79 } else if ((int)(except) == exception) { \
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80 _currentExceptionContext_[rvf_get_taskid()] = _currentExceptionContext_[rvf_get_taskid()]->next;
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81
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82 #define catch_any \
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83 } else { \
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84 _currentExceptionContext_[rvf_get_taskid()] = _currentExceptionContext_[rvf_get_taskid()]->next;
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85
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86 #define endtry \
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87 } \
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88 } while(0); \
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89 if (_currentExceptionContext_[rvf_get_taskid()] == &_localExceptionContext_) { \
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90 rvf_forget_protected_ptr();\
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91 _currentExceptionContext_[rvf_get_taskid()] = _currentExceptionContext_[rvf_get_taskid()]->next; \
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92 } \
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93 } while(0)
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94
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95 #define rethrow throw(exception)
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96 #define break_try break
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97
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98 /*
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99 #define return_try(...) \
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100 do { \
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101 _currentExceptionContext_ = _returnExceptionContext_; \
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102 return __VA_ARGS__; \
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103 } while(0)
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104 */
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105
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106 #define throw(except) _exceptionThrow_((int)(except))
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107
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108
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109 /*
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110 extern declarations
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111 */
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112
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113 extern void _exceptionThrow_(int except);
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114
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115 extern void rvf_forget_protected_ptr();
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116 extern void rvf_protect_pointer(T_RVF_MB_ID mb_id,void *p,T_RVF_RELEASE_PROTECTED_POINTER func);
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117
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118 #define RVF_PROTECT(bank,p) rvf_protect_pointer(bank,p,(T_RVF_RELEASE_PROTECTED_POINTER)rvf_free_buf)
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119
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120 #define THROW_IF_ERROR(err) if (err!=0) throw(E_unknown)
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121 #define THROW_IF_NULL(p) if (p==NULL) throw(E_not_enough_memory)
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122 #define THROW_IF_YELLOW(b,p) if ((p==NULL) || (rvf_get_mb_status(b)==RVF_YELLOW)) throw(E_not_enough_memory)
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123 #endif