FreeCalypso > hg > fc-magnetite
annotate src/gpf3/ccd/gsm5_v.c @ 516:1ed9de6c90bd
src/g23m-gsm/sms/sms_for.c: bogus malloc removed
The new error handling code that was not present in TCS211 blob version
contains a malloc call that is bogus for 3 reasons:
1) The memory allocation in question is not needed in the first place;
2) libc malloc is used instead of one of the firmware's proper ways;
3) The memory allocation is made inside a function and then never freed,
i.e., a memory leak.
This bug was caught in gcc-built FreeCalypso fw projects (Citrine
and Selenite) because our gcc environment does not allow any use of
libc malloc (any reference to malloc produces a link failure),
but this code from TCS3.2 is wrong even for Magnetite: if this code
path is executed repeatedly over a long time, the many small allocations
made by this malloc call without a subsequent free will eventually
exhaust the malloc heap provided by the TMS470 environment, malloc will
start returning NULL, and the bogus code will treat it as an error.
Because the memory allocation in question is not needed at all,
the fix entails simply removing it.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 22 Jul 2018 06:04:49 +0000 |
parents | c41a534f33c6 |
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rev | line source |
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | Project : |
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4 | Modul : gsm5_v.c |
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5 +----------------------------------------------------------------------------- |
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6 | Copyright 2002 Texas Instruments Berlin, AG |
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7 | All rights reserved. |
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8 | |
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9 | This file is confidential and a trade secret of Texas |
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10 | Instruments Berlin, AG |
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11 | The receipt of or possession of this file does not convey |
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12 | any rights to reproduce or disclose its contents or to |
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13 | manufacture, use, or sell anything it may describe, in |
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14 | whole, or in part, without the specific written consent of |
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15 | Texas Instruments Berlin, AG. |
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16 +----------------------------------------------------------------------------- |
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17 | Purpose : Definition of encoding and decoding functions for GSM5_V elements |
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18 +----------------------------------------------------------------------------- |
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19 */ |
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20 |
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21 |
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22 /* |
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23 * standard definitions like GLOBAL, UCHAR, ERROR etc. |
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24 */ |
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25 #include "typedefs.h" |
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26 #include "header.h" |
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27 |
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28 /* |
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29 * Prototypes of ccd (USE_DRIVER EQ undef) for prototypes only |
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30 * look at ccdapi.h |
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31 */ |
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32 #undef USE_DRIVER |
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33 #include "ccdapi.h" |
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34 |
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35 /* |
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36 * Types and functions for bit access and manipulation |
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37 */ |
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38 #include "ccd_globs.h" |
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39 #include "bitfun.h" |
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40 |
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41 /* |
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42 * Prototypes of ccd internal functions |
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43 */ |
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44 #include "ccd.h" |
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45 |
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46 /* |
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47 * Declaration of coder/decoder tables |
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48 */ |
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49 #include "ccdtable.h" |
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50 #include "ccddata.h" |
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51 |
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52 #ifndef RUN_INT_RAM |
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53 /* |
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54 +--------------------------------------------------------------------+ |
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55 | PROJECT : CCD (6144) MODULE : CDC_GSM | |
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56 | STATE : code ROUTINE : cdc_gsm5v_decode | |
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57 +--------------------------------------------------------------------+ |
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58 |
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59 PURPOSE : Decoding of the GSM Type 5V element. This element |
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60 consists of the not decoded bits of the bitstream. |
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61 In the target C-structure this element is a bitbuffer |
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62 (T_xxx_BUF) in wich the bitstream content are written. |
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63 |
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64 */ |
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65 |
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66 SHORT cdc_gsm5v_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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67 { |
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68 #ifdef DEBUG_CCD |
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69 #ifndef CCD_SYMBOLS |
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70 TRACE_CCD (globs, "cdc_gsm5v_decode()"); |
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71 #else |
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72 TRACE_CCD (globs, "cdc_gsm5v_decode() %s", ccddata_get_alias((USHORT) e_ref, 1)); |
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73 #endif |
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74 #endif |
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75 |
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76 if (globs->bitpos >= globs->buflen) |
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77 { |
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78 return 1; |
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79 } |
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80 else |
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81 { |
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82 ULONG cix_ref; |
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83 |
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84 cix_ref = melem[e_ref].calcIdxRef; |
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85 |
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86 /* |
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87 * if this element is conditional, check the condition |
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88 */ |
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89 if (calcidx[cix_ref].numCondCalcs NEQ 0 |
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90 AND ! ccd_conditionOK (e_ref, globs)) |
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91 { |
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92 return 1; |
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93 } |
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94 else |
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95 { |
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96 ULONG bits_to_read; |
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97 ULONG num_prolog_steps, prolog_step_ref; |
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98 |
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99 num_prolog_steps = calcidx[cix_ref].numPrologSteps; |
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100 prolog_step_ref = calcidx[cix_ref].prologStepRef; |
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101 |
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102 /* If there is a prologue given for this element, process it. */ |
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103 if (num_prolog_steps) |
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104 { |
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105 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs); |
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106 } |
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107 |
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108 /* |
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109 * Setup the offset into the C-structure for this element |
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110 */ |
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111 globs->pstructOffs = melem[e_ref].structOffs; |
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112 |
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113 if (melem[e_ref].optional) |
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114 { |
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115 /* |
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116 * for optional elements set the valid-flag in the C-struct. |
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117 */ |
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118 globs->pstruct[globs->pstructOffs++] = TRUE; |
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119 } |
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120 |
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121 if (globs->maxBitpos < globs->buflen - 16*globs->numEOCPending) |
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122 { |
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123 ccd_recordFault (globs, ERR_LEN_MISMATCH, CONTINUE, (USHORT) e_ref, |
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124 globs->pstruct + globs->pstructOffs); |
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125 } |
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126 |
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127 bits_to_read = (ULONG)(globs->buflen - globs->bitpos - 16*globs->numEOCPending); |
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128 bf_readBitChunk (bits_to_read, globs); |
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129 } |
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130 } |
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131 |
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132 return 1; |
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133 } |
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134 #endif /* !RUN_INT_RAM */ |
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135 |
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136 #ifndef RUN_INT_RAM |
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137 /* |
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138 +--------------------------------------------------------------------+ |
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139 | PROJECT : CCD (6144) MODULE : CDC_GSM | |
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140 | STATE : code ROUTINE : cdc_gsm5v_encode | |
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141 +--------------------------------------------------------------------+ |
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142 |
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143 PURPOSE : Encoding of the GSM Type 5V element. This element |
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144 consists of the not decoded bits of the bitstream. |
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145 In the target C-structure this element is a bitbuffer |
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146 (T_xxx_BUF) from wich the bitstream content is read. |
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147 |
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148 */ |
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149 |
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150 SHORT cdc_gsm5v_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs) |
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151 { |
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152 ULONG cix_ref, num_prolog_steps, prolog_step_ref; |
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153 |
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154 #ifdef DEBUG_CCD |
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155 #ifndef CCD_SYMBOLS |
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156 TRACE_CCD (globs, "cdc_gsm5v_encode()"); |
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157 #else |
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158 TRACE_CCD (globs, "cdc_gsm5v_encode() %s", ccddata_get_alias((USHORT) e_ref, 1)); |
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159 #endif |
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160 #endif |
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161 |
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162 cix_ref = melem[e_ref].calcIdxRef; |
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163 num_prolog_steps = calcidx[cix_ref].numPrologSteps; |
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164 prolog_step_ref = calcidx[cix_ref].prologStepRef; |
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165 |
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166 /* |
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167 * if this element is conditional, check the condition |
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168 */ |
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169 if (calcidx[cix_ref].numCondCalcs NEQ 0 |
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170 AND ! ccd_conditionOK (e_ref, globs)) |
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171 return 1; |
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172 |
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173 /* |
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174 * if this element have a defined Prolog |
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175 * we have to process it before decoding the bitstream |
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176 */ |
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177 if (num_prolog_steps) |
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178 { |
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179 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs); |
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180 } |
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181 |
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182 /* |
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183 * Setup the offset into the C-structure for this element |
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184 */ |
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185 globs->pstructOffs = melem[e_ref].structOffs; |
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186 |
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187 if (melem[e_ref].optional) |
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188 { |
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189 /* |
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190 * for optional elements check the valid-flag in the C-struct. |
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191 * Spare elements does not have a corresponding valid flag. |
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192 */ |
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193 if (globs->pstruct[globs->pstructOffs++] == FALSE) |
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194 { |
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195 return 1; |
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196 } |
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197 #ifdef DEBUG_CCD |
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198 else if (globs->pstruct [melem[e_ref].structOffs] != TRUE) |
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199 { |
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200 TRACE_CCD (globs, "Ambiguous value for valid flag!\n...assumed 1 for ccdID=%d", |
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201 e_ref); |
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202 } |
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203 #endif |
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204 } |
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205 |
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206 bf_writeBitChunk (mvar[melem[e_ref].elemRef].bSize, globs); |
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207 |
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208 return 1; |
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209 } |
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210 #endif /* !RUN_INT_RAM */ |