FreeCalypso > hg > freecalypso-sw

annotate gsm-fw/riviera/support/exception.c @ 923:10b4bed10192

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gsm-fw/L1: fix for the DSP patch corruption bug The L1 code we got from the LoCosto fw contains a feature for DSP CPU load measurement. This feature is a LoCosto-ism, i.e., not applicable to earlier DBB chips (Calypso) with their respective earlier DSP ROMs. Most of the code dealing with that feature is conditionalized as #if (DSP >= 38), but one spot was missed, and the MCU code was writing into an API word dealing with this feature. In TCS211 this DSP API word happens to be used by the DSP code patch, hence that write was corrupting the patched DSP code.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Mon, 19 Oct 2015 17:13:56 +0000
parents afceeeb2cba1
children
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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 // Authorization to use this source code communicated to Christophe Favergeon
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18 // by email
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19
129
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20 #include "../../include/config.h"
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21
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22 #include <stdio.h>
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23 #include <stdlib.h>
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24 #include <assert.h>
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25 #include "exception.h"
118
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26
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27
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28 /* global stack of exception context */
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29 struct _exceptionContext_ *const _returnExceptionContext_[MAX_RVF_TASKS]=
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30 #if (!GSMLITE)
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31 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
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32 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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33 #else
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34 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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35 #endif
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36
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37 struct _exceptionContext_ *_currentExceptionContext_ [MAX_RVF_TASKS]=
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38 #if (!GSMLITE)
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39 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
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40 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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41 #else
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42 {NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};
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43 #endif
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44
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45 /* delete protected pointers and throw exception */
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46 void
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47 _exceptionThrow_(int exception)
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48 {
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49 struct _protectedPtr_ *p;
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50 struct _protectedPtr_ *oldp;
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51
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52 /* no exception context saved, exit program */
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53 if (!_currentExceptionContext_[rvf_get_taskid()]) exit(exception);
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54
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55 /* free pointers stored on the current exception context pointers stack */
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56 p=_currentExceptionContext_[rvf_get_taskid()]->stack;
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57
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58 while(p)
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59 {
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60 oldp=p->previous;
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61 p->func(p->ptr);
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62 rvf_free_buf(p);
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63 p=oldp;
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64 }
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65
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66 _currentExceptionContext_[rvf_get_taskid()]->stack=NULL;
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67
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68 /* jump to previous exception context */
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69 rvf_restore_context_buffer_(_currentExceptionContext_[rvf_get_taskid()]->context, exception);
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70 }
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71
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72
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73 // Protect a pointer when there is a try/ctahc block active
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74 void rvf_protect_pointer(T_RVF_MB_ID mb_id,void *p,T_RVF_RELEASE_PROTECTED_POINTER func)
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75 {
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76
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77 struct _protectedPtr_ *ptr;
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78 struct _exceptionContext_ *context;
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79 T_RVF_MB_STATUS err;
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80
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81
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82
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83 if (_currentExceptionContext_[rvf_get_taskid()])
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84 {
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85
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86 if (p==NULL)
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87 throw(E_not_enough_memory);
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88
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89 context=_currentExceptionContext_[rvf_get_taskid()];
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90 err=rvf_get_buf(mb_id,sizeof(struct _protectedPtr_),(void*)&ptr);
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91
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92
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93 if (err==RVF_GREEN)
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94 {
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95 ptr->next=NULL;
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96 ptr->previous=NULL;
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97 ptr->ptr=p;
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98 ptr->func=func;
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99
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100 if (context->stack==NULL)
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101 {
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102 context->stack=ptr;
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103 }
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104 else
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105 {
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106 ptr->previous=context->stack;
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107 context->stack->next=ptr;
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108 context->stack=ptr;
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109 }
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110 }
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111 else
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112 {
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113 if (p!=NULL)
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114 rvf_free_buf(p);
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115 throw(E_not_enough_memory);
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116 }
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117 }
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118 }
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119
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120 void rvf_forget_protected_ptr()
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121 {
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122 struct _protectedPtr_ *p;
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123 struct _protectedPtr_ *oldp;
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124
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125 p=_currentExceptionContext_[rvf_get_taskid()]->stack;
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126
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127 while(p)
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128 {
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129 oldp=p->previous;
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130 rvf_free_buf(p);
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parents:
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131 p=oldp;
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132 }
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133
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134 _currentExceptionContext_[rvf_get_taskid()]->stack=NULL;
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135 }