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annotate packages/cygmon/current/misc/breakpoints.c @ 2729:74dbf4c3f2e1 after-copyright-change-20090129

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Update all copyright banners to reflect FSF ownership; fix and improve licence text.
author jlarmour
date Thu, 29 Jan 2009 17:47:46 +0000
parents d2c90368aeef
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 // breakpoints.c
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4 //
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5 // Support aribtrary set of breakpoints.
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6 //
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7 //==========================================================================
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8 // ####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
208
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //==========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s):
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43 // Contributors: gthomas
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44 // Date: 1999-10-20
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45 // Purpose:
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46 // Description:
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47 //
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48 //
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49 //####DESCRIPTIONEND####
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50 //
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51 //=========================================================================
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52
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53 #include "board.h"
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54
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55 #ifndef USE_ECOS_HAL_BREAKPOINTS
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56
76
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57 #include <stdlib.h>
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58 #ifdef HAVE_BSP
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59 #include <bsp/bsp.h>
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60 #include <bsp/cpu.h>
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61 #endif
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62
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63 #include "monitor.h"
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64 #include "tservice.h"
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65 #include "stub-tservice.h"
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66
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67 #include "fmt_util.h"
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68
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69
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70 static struct bp *last_bp_ptr;
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71 static struct bp *first_bp_ptr;
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72
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73 #ifdef NO_MALLOC
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74 static struct bp *free_bp_list;
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75 static struct bp bp_list[MAX_NUM_BP];
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76 static int curr_bp_num;
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77 #endif
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78
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79 int
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80 add_mon_breakpoint (mem_addr_t location)
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81 {
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82 struct bp *ptr;
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83 struct bp *new_bp_ptr;
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84
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85 for (ptr = first_bp_ptr; ptr != NULL; ptr = ptr->next)
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86 {
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87 if (MEM_ADDR_EQ_P (ptr->address, location))
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88 return 1;
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89 }
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90 #ifdef NO_MALLOC
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91 if (free_bp_list != NULL)
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92 {
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93 new_bp_ptr = free_bp_list;
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94 free_bp_list = new_bp_ptr->next;
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95 }
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96 else
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97 {
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98 if (curr_bp_num < MAX_NUM_BP)
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99 {
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100 new_bp_ptr = &bp_list[curr_bp_num++];
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101 }
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102 else
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103 {
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104 xprintf ("No more breakpoints\n");
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105 return 1;
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106 }
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107 }
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108 #else
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109 new_bp_ptr = (struct bp *)malloc (sizeof (struct bp));
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110 #endif
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111
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112 if (first_bp_ptr == NULL)
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113 {
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114 first_bp_ptr = new_bp_ptr;
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115 }
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116 else
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117 {
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118 last_bp_ptr->next = new_bp_ptr;
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119 }
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120 last_bp_ptr = new_bp_ptr;
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121
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122 last_bp_ptr->next = NULL;
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123 last_bp_ptr->address = location;
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124 last_bp_ptr->in_memory = 0;
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125 return 0;
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126 }
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127
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128
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129 void
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130 install_breakpoints (void)
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131 {
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132 struct bp *ptr = first_bp_ptr;
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133 while (ptr != NULL)
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134 {
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135 set_breakpoint (ptr);
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136 ptr = ptr->next;
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137 }
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138 }
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139
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140
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141 void
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142 clear_breakpoints (void)
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143 {
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144 struct bp *ptr = first_bp_ptr;
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145
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146 while (ptr != NULL)
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147 {
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148 clear_breakpoint (ptr);
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149 ptr = ptr->next;
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150 }
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151 }
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152
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153 int
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154 show_breakpoints (void)
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155 {
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156 struct bp *ptr;
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157
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158 for (ptr = first_bp_ptr; ptr != NULL; ptr = ptr->next)
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159 {
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160 char buf[20];
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161
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162 addr2str (&ptr->address, buf);
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163 xprintf ("%s\n", buf);
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164 }
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165
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166 return 0;
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167 }
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168
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169
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170
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171 int
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172 clear_mon_breakpoint (mem_addr_t location)
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173 {
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174 int error = 0;
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175 struct bp *ptr = first_bp_ptr;
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176 struct bp *prev_ptr = NULL;
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177
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178 /* Scan the list looking for the address to clear */
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179 while (ptr != NULL && !MEM_ADDR_EQ_P (ptr->address, location))
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180 {
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181 /* keep a pointer one behind the current position */
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182 prev_ptr = ptr;
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183 ptr = ptr->next;
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184 }
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185 if (ptr == NULL)
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186 {
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187 xprintf ("That address has no breakpoint on it.\n");
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188 error = 1;
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189 }
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190 else
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191 {
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192 /* Just in case it's still in memory. */
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193 clear_breakpoint (ptr);
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194
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195 /* now we'll point the previous bp->next at the one after the one
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196 we're deleting, unless there is no previous bp. */
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197 if (prev_ptr != NULL)
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198 {
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199 prev_ptr->next = ptr->next;
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200 }
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201
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202 if (first_bp_ptr == ptr)
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203 first_bp_ptr = ptr->next;
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204
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205 if (last_bp_ptr == ptr)
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206 last_bp_ptr = prev_ptr;
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207
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208 /* eliminate the offending bp struct */
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209 #ifdef NO_MALLOC
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210 ptr->next = free_bp_list;
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211 free_bp_list = ptr;
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212 #else
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213 free (ptr);
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214 #endif
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215 }
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216 return error;
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217 }
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218
112
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219 #endif /* USE_ECOS_HAL_BREAKPOINTS */