1 | /* |
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2 | * This file contains the RTEMS thread awareness support for GDB stubs. |
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3 | * |
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4 | * This file is derived from an RTEMS thread aware i386-stub.c that |
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5 | * had the following copyright announcements: |
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6 | * |
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7 | * This software is Copyright (C) 1998 by T.sqware - all rights limited |
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8 | * It is provided in to the public domain "as is", can be freely modified |
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9 | * as far as this copyight notice is kept unchanged, but does not imply |
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10 | * an endorsement by T.sqware of the product in which it is included. |
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11 | * |
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12 | * |
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13 | * Modifications for RTEMS threads and more |
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14 | * |
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15 | * Copyright (C) 2000 Quality Quorum, Inc. |
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16 | * |
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17 | * All Rights Reserved |
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18 | * |
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19 | * Permission to use, copy, modify, and distribute this software and its |
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20 | * documentation for any purpose and without fee is hereby granted. |
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21 | * |
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22 | * QQI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING |
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23 | * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL |
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24 | * QQI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR |
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25 | * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
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26 | * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, |
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27 | * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
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28 | * SOFTWARE. |
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29 | */ |
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30 | |
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31 | #include <rtems.h> |
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32 | #include <string.h> |
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33 | |
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34 | #include "gdb_if.h" |
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35 | |
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36 | /* Change it to something meaningful when debugging */ |
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37 | #undef ASSERT |
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38 | #define ASSERT(x) |
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39 | |
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40 | extern const char gdb_hexchars[]; |
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41 | |
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42 | |
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43 | /* |
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44 | * Prototypes for CPU dependent routines that are conditional |
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45 | * at the bottom of this file. |
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46 | */ |
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47 | |
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48 | void rtems_gdb_stub_get_registers_from_context( |
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49 | int *registers, |
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50 | Thread_Control *th |
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51 | ); |
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52 | |
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53 | |
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54 | |
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55 | |
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56 | |
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57 | |
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58 | |
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59 | /* Check whether it is OK to enable thread support */ |
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60 | int rtems_gdb_stub_thread_support_ok(void) |
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61 | { |
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62 | if (_System_state_Get() == SYSTEM_STATE_UP) { |
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63 | return 1; |
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64 | } |
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65 | return 0; |
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66 | } |
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67 | |
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68 | |
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69 | |
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70 | |
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71 | |
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72 | /* |
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73 | * rtems_gdb_stub_id_to_index |
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74 | * |
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75 | * Return the gdb thread id for the specified RTEMS thread id |
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76 | */ |
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77 | |
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78 | int rtems_gdb_stub_id_to_index( |
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79 | Objects_Id thread_obj_id |
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80 | ) |
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81 | { |
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82 | Objects_Id min_id, max_id; |
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83 | int first_posix_id, first_rtems_id; |
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84 | Objects_Information *obj_info; |
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85 | |
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86 | if (_System_state_Get() != SYSTEM_STATE_UP) { |
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87 | /* We have one thread let us use value reserved for idle thread */ |
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88 | return 1; |
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89 | } |
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90 | |
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91 | if (_Thread_Executing == _Thread_Idle) { |
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92 | return 1; |
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93 | } |
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94 | |
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95 | /* Let us figure out thread_id for gdb */ |
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96 | first_rtems_id = 2; |
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97 | |
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98 | obj_info = _Objects_Information_table[OBJECTS_CLASSIC_API][1]; |
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99 | |
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100 | min_id = obj_info->minimum_id; |
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101 | max_id = obj_info->maximum_id; |
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102 | |
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103 | if (thread_obj_id >= min_id && thread_obj_id < max_id) { |
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104 | return first_rtems_id + (thread_obj_id - min_id); |
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105 | } |
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106 | |
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107 | first_posix_id = first_rtems_id + (max_id - min_id) + 1; |
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108 | |
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109 | min_id = _Objects_Information_table[OBJECTS_POSIX_API][1]->minimum_id; |
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110 | |
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111 | return first_posix_id + (thread_obj_id - min_id); |
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112 | } |
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113 | |
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114 | |
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115 | |
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116 | /* Return the RTEMS thread id from a gdb thread id */ |
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117 | Thread_Control *rtems_gdb_index_to_stub_id( |
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118 | int thread |
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119 | ) |
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120 | { |
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121 | Objects_Id thread_obj_id; |
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122 | Objects_Id min_id, max_id; |
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123 | int first_posix_id, first_rtems_id; |
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124 | Objects_Information *obj_info; |
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125 | Thread_Control *th; |
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126 | |
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127 | ASSERT(registers != NULL); |
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128 | |
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129 | if (_System_state_Get() != SYSTEM_STATE_UP || thread <= 0) { |
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130 | /* Should not happen */ |
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131 | return NULL; |
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132 | } |
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133 | |
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134 | if (thread == 1) { |
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135 | th = _Thread_Idle; |
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136 | goto found; |
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137 | } |
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138 | |
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139 | /* Let us get object associtated with current thread */ |
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140 | first_rtems_id = 2; |
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141 | |
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142 | thread_obj_id = _Thread_Executing->Object.id; |
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143 | |
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144 | /* Let us figure out thread_id for gdb */ |
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145 | obj_info = _Objects_Information_table[OBJECTS_CLASSIC_API][1]; |
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146 | |
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147 | min_id = obj_info->minimum_id; |
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148 | max_id = obj_info->maximum_id; |
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149 | |
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150 | if (thread <= (first_rtems_id + (max_id - min_id))) { |
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151 | th = (Thread_Control *)(obj_info->local_table[thread - first_rtems_id + 1]); |
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152 | |
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153 | if (th != NULL) { |
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154 | goto found; |
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155 | } |
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156 | |
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157 | /* Thread does not exist */ |
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158 | return NULL; |
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159 | } |
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160 | |
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161 | first_posix_id = first_rtems_id + (max_id - min_id) + 1; |
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162 | |
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163 | obj_info = _Objects_Information_table[OBJECTS_POSIX_API][1]; |
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164 | |
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165 | min_id = obj_info->minimum_id; |
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166 | max_id = obj_info->maximum_id; |
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167 | |
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168 | th = (Thread_Control *)(obj_info->local_table[thread - first_posix_id + 1]); |
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169 | if (th == NULL) { |
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170 | /* Thread does not exist */ |
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171 | return NULL; |
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172 | } |
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173 | |
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174 | found: |
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175 | return th; |
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176 | } |
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177 | |
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178 | |
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179 | |
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180 | |
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181 | |
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182 | |
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183 | /* Get id of the thread stopped by exception */ |
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184 | int rtems_gdb_stub_get_current_thread(void) |
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185 | { |
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186 | return rtems_gdb_stub_id_to_index( _Thread_Executing->Object.id ); |
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187 | } |
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188 | |
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189 | |
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190 | |
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191 | |
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192 | /* Get id of the next thread after athread, if argument <= 0 find the |
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193 | first available thread, return thread if found or 0 if not */ |
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194 | int rtems_gdb_stub_get_next_thread(int athread) |
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195 | { |
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196 | Objects_Id id, min_id, max_id; |
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197 | int lim, first_posix_id, first_rtems_id; |
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198 | Objects_Information *obj_info; |
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199 | int start; |
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200 | |
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201 | if (_System_state_Get() != SYSTEM_STATE_UP) { |
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202 | /* We have one thread let us use value of idle thread */ |
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203 | return (athread < 1) ? 1 : 0; |
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204 | } |
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205 | |
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206 | if (athread < 1) { |
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207 | return 1; |
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208 | } |
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209 | |
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210 | first_rtems_id = 2; |
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211 | |
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212 | obj_info = _Objects_Information_table[OBJECTS_CLASSIC_API][1]; |
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213 | |
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214 | min_id = obj_info->minimum_id; |
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215 | max_id = obj_info->maximum_id; |
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216 | |
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217 | lim = first_rtems_id + max_id - min_id; |
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218 | |
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219 | if (athread < lim) { |
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220 | if (athread < first_rtems_id) { |
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221 | start = first_rtems_id; |
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222 | } else { |
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223 | start = 1 + athread; |
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224 | } |
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225 | |
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226 | for (id=start; id<=lim; id++) { |
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227 | if (obj_info->local_table[id - first_rtems_id + 1] != NULL) { |
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228 | return id; |
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229 | } |
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230 | } |
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231 | } |
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232 | |
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233 | first_posix_id = first_rtems_id + (max_id - min_id) + 1; |
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234 | |
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235 | obj_info = _Objects_Information_table[OBJECTS_POSIX_API][1]; |
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236 | |
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237 | min_id = obj_info->minimum_id; |
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238 | max_id = obj_info->maximum_id; |
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239 | |
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240 | lim = first_posix_id + (max_id - min_id); |
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241 | |
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242 | if (athread < lim) { |
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243 | if (athread < first_posix_id) { |
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244 | start = first_posix_id; |
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245 | } else { |
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246 | start = 1 + athread; |
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247 | } |
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248 | |
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249 | for (id=start; id<=lim; id++) { |
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250 | if (obj_info->local_table[id - first_posix_id + 1] != NULL) { |
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251 | return id; |
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252 | } |
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253 | } |
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254 | } |
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255 | |
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256 | /* Not found */ |
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257 | return 0; |
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258 | } |
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259 | |
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260 | |
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261 | |
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262 | |
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263 | |
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264 | |
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265 | /* Get thread registers, return 0 if thread does not |
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266 | exist, and 1 otherwise */ |
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267 | int rtems_gdb_stub_get_thread_regs( |
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268 | int thread, |
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269 | unsigned int *registers |
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270 | ) |
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271 | { |
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272 | Thread_Control *th; |
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273 | |
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274 | th= rtems_gdb_index_to_stub_id(thread); |
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275 | |
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276 | if( th ) |
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277 | { |
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278 | rtems_gdb_stub_get_registers_from_context( registers, th ); |
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279 | return 1; |
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280 | } |
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281 | return 0; |
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282 | } |
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283 | |
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284 | |
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285 | |
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286 | |
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287 | |
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288 | |
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289 | /* Set thread registers, return 0 if thread does not |
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290 | exist or register values will screw up the threads, |
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291 | and 1 otherwise */ |
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292 | |
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293 | int rtems_gdb_stub_set_thread_regs( |
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294 | int thread, |
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295 | unsigned int *registers |
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296 | ) |
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297 | { |
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298 | /* In current situation there is no point in changing any registers here |
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299 | thread status is displayed as being deep inside thread switching |
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300 | and we better do not screw up anything there - it may be fixed eventually |
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301 | though */ |
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302 | return 1; |
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303 | } |
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304 | |
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305 | |
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306 | |
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307 | |
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308 | |
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309 | |
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310 | /* Get thread information, return 0 if thread does not |
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311 | exist and 1 otherwise */ |
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312 | int rtems_gdb_stub_get_thread_info( |
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313 | int thread, |
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314 | struct rtems_gdb_stub_thread_info *info |
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315 | ) |
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316 | { |
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317 | Objects_Id thread_obj_id; |
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318 | Objects_Id min_id, max_id; |
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319 | int first_posix_id, first_rtems_id; |
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320 | Objects_Information *obj_info; |
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321 | Thread_Control *th; |
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322 | uint32_t name; |
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323 | char tmp_buf[20]; |
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324 | |
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325 | ASSERT(info != NULL); |
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326 | |
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327 | if (thread <= 0) { |
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328 | return 0; |
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329 | } |
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330 | |
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331 | if (_System_state_Get() != SYSTEM_STATE_UP || thread == 1) { |
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332 | /* We have one thread let us use value |
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333 | which will never happen for real thread */ |
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334 | strcpy(info->display, "idle thread"); |
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335 | strcpy(info->name, "IDLE"); |
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336 | info->more_display[0] = 0; /* Nothing */ |
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337 | |
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338 | return 1; |
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339 | } |
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340 | |
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341 | /* Let us get object associtated with current thread */ |
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342 | thread_obj_id = _Thread_Executing->Object.id; |
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343 | |
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344 | /* Let us figure out thread_id for gdb */ |
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345 | first_rtems_id = 2; |
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346 | |
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347 | obj_info = _Objects_Information_table[OBJECTS_CLASSIC_API][1]; |
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348 | |
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349 | min_id = obj_info->minimum_id; |
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350 | max_id = obj_info->maximum_id; |
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351 | |
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352 | if (thread <= (first_rtems_id + (max_id - min_id))) { |
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353 | th = (Thread_Control *)(obj_info->local_table[thread - |
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354 | first_rtems_id + 1]); |
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355 | |
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356 | if (th == NULL) { |
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357 | /* Thread does not exist */ |
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358 | return 0; |
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359 | } |
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360 | |
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361 | strcpy(info->display, "rtems task: control at 0x"); |
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362 | |
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363 | tmp_buf[0] = gdb_hexchars[(((int)th) >> 28) & 0xf]; |
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364 | tmp_buf[1] = gdb_hexchars[(((int)th) >> 24) & 0xf]; |
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365 | tmp_buf[2] = gdb_hexchars[(((int)th) >> 20) & 0xf]; |
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366 | tmp_buf[3] = gdb_hexchars[(((int)th) >> 16) & 0xf]; |
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367 | tmp_buf[4] = gdb_hexchars[(((int)th) >> 12) & 0xf]; |
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368 | tmp_buf[5] = gdb_hexchars[(((int)th) >> 8) & 0xf]; |
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369 | tmp_buf[6] = gdb_hexchars[(((int)th) >> 4) & 0xf]; |
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370 | tmp_buf[7] = gdb_hexchars[((int)th) & 0xf]; |
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371 | tmp_buf[8] = 0; |
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372 | |
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373 | strcat(info->display, tmp_buf); |
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374 | #if 0 |
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375 | name = *(uint32_t*)(obj_info->local_table[thread]->name); |
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376 | #else |
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377 | name = *(uint32_t*)(obj_info->local_table[thread - |
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378 | first_rtems_id + 1]->name); |
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379 | #endif |
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380 | info->name[0] = (name >> 24) & 0xff; |
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381 | info->name[1] = (name >> 16) & 0xff; |
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382 | info->name[2] = (name >> 8) & 0xff; |
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383 | info->name[3] = name & 0xff; |
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384 | info->name[4] = 0; |
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385 | |
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386 | info->more_display[0] = 0; /* Nothing */ |
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387 | |
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388 | return 1; |
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389 | } |
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390 | |
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391 | first_posix_id = first_rtems_id + (max_id - min_id) + 1; |
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392 | |
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393 | obj_info = _Objects_Information_table[OBJECTS_POSIX_API][1]; |
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394 | |
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395 | min_id = obj_info->minimum_id; |
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396 | max_id = obj_info->maximum_id; |
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397 | |
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398 | th = (Thread_Control *)(obj_info->local_table[thread - first_posix_id + 1]); |
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399 | if (th == NULL) |
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400 | { |
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401 | /* Thread does not exist */ |
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402 | return 0; |
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403 | } |
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404 | |
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405 | strcpy(info->display, "posix thread: control at 0x"); |
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406 | |
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407 | tmp_buf[0] = gdb_hexchars[(((int)th) >> 28) & 0xf]; |
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408 | tmp_buf[1] = gdb_hexchars[(((int)th) >> 24) & 0xf]; |
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409 | tmp_buf[2] = gdb_hexchars[(((int)th) >> 20) & 0xf]; |
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410 | tmp_buf[3] = gdb_hexchars[(((int)th) >> 16) & 0xf]; |
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411 | tmp_buf[4] = gdb_hexchars[(((int)th) >> 12) & 0xf]; |
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412 | tmp_buf[5] = gdb_hexchars[(((int)th) >> 8) & 0xf]; |
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413 | tmp_buf[6] = gdb_hexchars[(((int)th) >> 4) & 0xf]; |
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414 | tmp_buf[7] = gdb_hexchars[((int)th) & 0xf]; |
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415 | tmp_buf[8] = 0; |
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416 | |
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417 | strcat(info->display, tmp_buf); |
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418 | |
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419 | name = *(uint32_t*)(obj_info->local_table[thread - |
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420 | first_posix_id + 1]->name); |
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421 | |
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422 | info->name[0] = (name >> 24) & 0xff; |
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423 | info->name[1] = (name >> 16) & 0xff; |
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424 | info->name[2] = (name >> 8) & 0xff; |
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425 | info->name[3] = name & 0xff; |
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426 | info->name[4] = 0; |
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427 | |
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428 | info->more_display[0] = 0; /* Nothing */ |
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429 | |
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430 | return 1; |
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431 | } |
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432 | |
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433 | /*******************************************************/ |
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434 | |
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435 | |
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436 | |
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437 | |
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438 | |
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439 | |
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440 | /* Format: x<type-1x>,<address-x>,<length-x>, where x is 'z' or 'Z' */ |
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441 | int parse_zbreak(const char *in, int *type, unsigned char **addr, int *len) |
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442 | { |
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443 | int ttmp, atmp, ltmp; |
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444 | |
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445 | ASSERT(in != NULL); |
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446 | ASSERT(type != NULL); |
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447 | ASSERT(addr != NULL); |
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448 | ASSERT(len != NULL); |
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449 | |
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450 | ASSERT(*in == 'z' || *in == 'Z'); |
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451 | |
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452 | in++; |
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453 | |
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454 | if (!hstr2nibble(in, &ttmp) || *(in+1) != ',') |
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455 | { |
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456 | return 0; |
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457 | } |
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458 | in += 2; |
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459 | |
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460 | in = vhstr2int(in, &atmp); |
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461 | if (in == NULL || *in != ',') |
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462 | { |
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463 | return 0; |
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464 | } |
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465 | in++; |
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466 | |
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467 | in = vhstr2int(in, <mp); |
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468 | if (in == NULL || ltmp < 1) |
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469 | { |
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470 | return 0; |
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471 | } |
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472 | |
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473 | *type = ttmp; |
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474 | *addr = (unsigned char *)atmp; |
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475 | *len = ltmp; |
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476 | |
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477 | return 1; |
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478 | } |
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479 | |
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480 | /* Format: qP<mask-08x><thread_id-ft> */ |
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481 | static int |
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482 | parse_qp(const char *in, int *mask, int *thread) |
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483 | { |
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484 | const char *ptr; |
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485 | |
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486 | ASSERT(in != NULL); |
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487 | ASSERT(*in == 'q'); |
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488 | ASSERT(*(in+1) == 'P'); |
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489 | |
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490 | ptr = fhstr2int(in+2, mask); |
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491 | if (ptr == NULL) |
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492 | { |
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493 | return 0; |
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494 | } |
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495 | |
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496 | ptr = fhstr2thread(ptr, thread); |
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497 | if (ptr == NULL) |
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498 | { |
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499 | return 0; |
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500 | } |
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501 | |
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502 | return 1; |
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503 | } |
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504 | |
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505 | /* Format: qQ<mask-08x><thread_id-ft><tag-08x><length-02x><value>...] */ |
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506 | static void |
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507 | pack_qq(char *out, int mask, int thread, struct rtems_gdb_stub_thread_info *info) |
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508 | { |
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509 | int len; |
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510 | |
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511 | ASSERT(out != NULL); |
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512 | ASSERT(info != NULL); |
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513 | |
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514 | *out++ = 'q'; |
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515 | *out++ = 'Q'; |
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516 | out = int2fhstr(out, mask); |
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517 | out = thread2fhstr(out, thread); |
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518 | |
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519 | if (mask & 0x1) { |
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520 | /* Thread id once again */ |
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521 | memcpy(out, "00000001", 8); |
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522 | out += 8; |
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523 | *out++ = '1'; |
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524 | *out++ = '0'; |
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525 | out = thread2fhstr(out, thread); |
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526 | } |
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527 | |
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528 | if (mask & 0x2) { |
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529 | /* Exists */ |
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530 | memcpy(out, "00000002", 8); |
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531 | out += 8; |
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532 | *out++ = '0'; |
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533 | *out++ = '1'; |
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534 | *out++ = '1'; |
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535 | } |
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536 | |
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537 | if (mask & 0x4) { |
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538 | /* Display */ |
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539 | memcpy(out, "00000004", 8); |
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540 | out += 8; |
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541 | |
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542 | info->display[sizeof(info->display)-1] = 0; /* Fot God sake */ |
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543 | |
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544 | len = strlen(info->display); |
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545 | |
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546 | *out++ = gdb_hexchars[len >> 4]; |
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547 | *out++ = gdb_hexchars[len & 0x0f]; |
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548 | |
---|
549 | memcpy(out, info->display, len); |
---|
550 | |
---|
551 | out += len; |
---|
552 | } |
---|
553 | |
---|
554 | if (mask & 0x8) { |
---|
555 | /* Name */ |
---|
556 | memcpy(out, "00000008", 8); |
---|
557 | out += 8; |
---|
558 | |
---|
559 | info->name[sizeof(info->name)-1] = 0; /* Fot God sake */ |
---|
560 | |
---|
561 | len = strlen(info->name); |
---|
562 | |
---|
563 | *out++ = gdb_hexchars[len >> 4]; |
---|
564 | *out++ = gdb_hexchars[len & 0x0f]; |
---|
565 | |
---|
566 | memcpy(out, info->name, len); |
---|
567 | |
---|
568 | out += len; |
---|
569 | } |
---|
570 | |
---|
571 | if (mask & 0x10) { |
---|
572 | /* More display */ |
---|
573 | memcpy(out, "00000010", 8); |
---|
574 | out += 8; |
---|
575 | |
---|
576 | info->more_display[sizeof(info->more_display)-1] = 0; /* Fot God sake */ |
---|
577 | |
---|
578 | len = strlen(info->more_display); |
---|
579 | |
---|
580 | *out++ = gdb_hexchars[len >> 4]; |
---|
581 | *out++ = gdb_hexchars[len & 0x0f]; |
---|
582 | |
---|
583 | memcpy(out, info->more_display, len); |
---|
584 | |
---|
585 | out += len; |
---|
586 | } |
---|
587 | |
---|
588 | *out = 0; |
---|
589 | |
---|
590 | return; |
---|
591 | } |
---|
592 | |
---|
593 | /* Format qL<first-01x><max_count-02x><arg_thread_id-ft> */ |
---|
594 | static int |
---|
595 | parse_ql(const char *in, int *first, int *max_count, int *athread) |
---|
596 | { |
---|
597 | const char *ptr; |
---|
598 | |
---|
599 | ASSERT(in != NULL); |
---|
600 | ASSERT(*in == 'q'); |
---|
601 | ASSERT(*(in+1) == 'L'); |
---|
602 | ASSERT(first != NULL); |
---|
603 | ASSERT(max_count != NULL); |
---|
604 | ASSERT(athread != NULL); |
---|
605 | |
---|
606 | ptr = in + 2; |
---|
607 | |
---|
608 | /* First */ |
---|
609 | if (!hstr2nibble(ptr, first)) |
---|
610 | { |
---|
611 | return 0; |
---|
612 | } |
---|
613 | ptr++; |
---|
614 | |
---|
615 | /* Max count */ |
---|
616 | if (!hstr2byte(ptr, max_count)) |
---|
617 | { |
---|
618 | return 0; |
---|
619 | } |
---|
620 | ptr += 2; |
---|
621 | |
---|
622 | /* A thread */ |
---|
623 | ptr = fhstr2thread(ptr, athread); |
---|
624 | if (ptr == NULL) |
---|
625 | { |
---|
626 | return 0; |
---|
627 | } |
---|
628 | |
---|
629 | return 1; |
---|
630 | } |
---|
631 | |
---|
632 | /* Format: qM<count-02x><done-01x><arg_thread_id>[<found_thread_id-ft>...] */ |
---|
633 | static char * |
---|
634 | reserve_qm_header(char *out) |
---|
635 | { |
---|
636 | ASSERT(out != NULL); |
---|
637 | |
---|
638 | return out + 21; |
---|
639 | } |
---|
640 | |
---|
641 | /* Format: qM<count-02x><done-01x><arg_thread_id>[<found_thread_id-ft>...] */ |
---|
642 | static char* |
---|
643 | pack_qm_thread(char *out, int thread) |
---|
644 | { |
---|
645 | ASSERT(out != 0); |
---|
646 | |
---|
647 | return thread2fhstr(out, thread); |
---|
648 | } |
---|
649 | |
---|
650 | /* Format: qM<count-02x><done-01x><arg_thread_id>[<found_thread_id-ft>...] */ |
---|
651 | static void |
---|
652 | pack_qm_header(char *out, int count, int done, int athread) |
---|
653 | { |
---|
654 | ASSERT(out != 0); |
---|
655 | ASSERT(count >= 0 && count < 256); |
---|
656 | |
---|
657 | *out++ = 'q'; |
---|
658 | *out++ = 'M'; |
---|
659 | |
---|
660 | *out++ = gdb_hexchars[(count >> 4) & 0x0f]; |
---|
661 | *out++ = gdb_hexchars[count & 0x0f]; |
---|
662 | |
---|
663 | if (done) { |
---|
664 | *out++ = '1'; |
---|
665 | } else { |
---|
666 | *out++ = '0'; |
---|
667 | } |
---|
668 | |
---|
669 | thread2fhstr(out, athread); |
---|
670 | return; |
---|
671 | } |
---|
672 | |
---|
673 | |
---|
674 | |
---|
675 | |
---|
676 | |
---|
677 | |
---|
678 | |
---|
679 | |
---|
680 | |
---|
681 | |
---|
682 | |
---|
683 | |
---|
684 | void rtems_gdb_process_query( |
---|
685 | char *inbuffer, |
---|
686 | char *outbuffer, |
---|
687 | int do_threads, |
---|
688 | int thread |
---|
689 | ) |
---|
690 | { |
---|
691 | char *optr; |
---|
692 | |
---|
693 | switch(inbuffer[1]) { |
---|
694 | case 'C': |
---|
695 | /* Current thread query query - return stopped thread */ |
---|
696 | if (!do_threads) { |
---|
697 | break; |
---|
698 | } |
---|
699 | |
---|
700 | optr = outbuffer; |
---|
701 | |
---|
702 | *optr++ = 'Q'; |
---|
703 | *optr++ = 'C'; |
---|
704 | optr = thread2vhstr(optr, thread); |
---|
705 | *optr = 0; |
---|
706 | break; |
---|
707 | |
---|
708 | |
---|
709 | |
---|
710 | |
---|
711 | case 'P': |
---|
712 | /* Thread info query */ |
---|
713 | if (!do_threads) { |
---|
714 | break; |
---|
715 | } |
---|
716 | |
---|
717 | { |
---|
718 | int ret, rthread, mask; |
---|
719 | struct rtems_gdb_stub_thread_info info; |
---|
720 | |
---|
721 | ret = parse_qp(inbuffer, &mask, &rthread); |
---|
722 | if (!ret|| mask & ~0x1f) { |
---|
723 | strcpy(outbuffer, "E01"); |
---|
724 | break; |
---|
725 | } |
---|
726 | |
---|
727 | ret = rtems_gdb_stub_get_thread_info(rthread, &info); |
---|
728 | if (!ret) { |
---|
729 | /* Good implementation would never ask for non-existing thread, |
---|
730 | should we care about bad ones - it does not seem so */ |
---|
731 | strcpy(outbuffer, "E02"); |
---|
732 | break; |
---|
733 | } |
---|
734 | |
---|
735 | /* Build response */ |
---|
736 | pack_qq(outbuffer, mask, rthread, &info); |
---|
737 | } |
---|
738 | break; |
---|
739 | |
---|
740 | |
---|
741 | |
---|
742 | |
---|
743 | |
---|
744 | case 'L': |
---|
745 | /* Thread list query */ |
---|
746 | if (!do_threads) { |
---|
747 | break; |
---|
748 | } |
---|
749 | |
---|
750 | { |
---|
751 | int ret, athread, first, max_cnt, i, done, rthread; |
---|
752 | |
---|
753 | ret = parse_ql(inbuffer, &first, &max_cnt, &athread); |
---|
754 | if (!ret) { |
---|
755 | strcpy(outbuffer, "E02"); |
---|
756 | break; |
---|
757 | } |
---|
758 | |
---|
759 | if (max_cnt == 0) { |
---|
760 | strcpy(outbuffer, "E02"); |
---|
761 | break; |
---|
762 | } |
---|
763 | |
---|
764 | if (max_cnt > QM_MAX_THREADS) { |
---|
765 | /* Limit max count by buffer size */ |
---|
766 | max_cnt = QM_MAX_THREADS; |
---|
767 | } |
---|
768 | |
---|
769 | /* Reserve place for output header */ |
---|
770 | optr = reserve_qm_header(outbuffer); |
---|
771 | |
---|
772 | if (first) { |
---|
773 | rthread = 0; |
---|
774 | } else { |
---|
775 | rthread = athread; |
---|
776 | } |
---|
777 | |
---|
778 | done = 0; |
---|
779 | |
---|
780 | for (i=0; i<max_cnt; i++) { |
---|
781 | rthread = rtems_gdb_stub_get_next_thread(rthread); |
---|
782 | |
---|
783 | if (rthread <= 0) { |
---|
784 | done = 1; /* Set done flag */ |
---|
785 | break; |
---|
786 | } |
---|
787 | |
---|
788 | optr = pack_qm_thread(optr, rthread); |
---|
789 | } |
---|
790 | |
---|
791 | *optr = 0; |
---|
792 | |
---|
793 | ASSERT((optr - outbuffer) < BUFMAX); |
---|
794 | |
---|
795 | /* Fill header */ |
---|
796 | pack_qm_header(outbuffer, i, done, athread); |
---|
797 | } |
---|
798 | break; |
---|
799 | |
---|
800 | |
---|
801 | |
---|
802 | |
---|
803 | |
---|
804 | |
---|
805 | default: |
---|
806 | if (memcmp(inbuffer, "qOffsets", 8) == 0) { |
---|
807 | unsigned char *t, *d, *b; |
---|
808 | char *out; |
---|
809 | |
---|
810 | if (!rtems_gdb_stub_get_offsets(&t, &d, &b)) { |
---|
811 | break; |
---|
812 | } |
---|
813 | |
---|
814 | out = outbuffer; |
---|
815 | |
---|
816 | *out++ = 'T'; |
---|
817 | *out++ = 'e'; |
---|
818 | *out++ = 'x'; |
---|
819 | *out++ = 't'; |
---|
820 | *out++ = '='; |
---|
821 | |
---|
822 | out = int2vhstr(out, (int)t); |
---|
823 | |
---|
824 | *out++ = ';'; |
---|
825 | *out++ = 'D'; |
---|
826 | *out++ = 'a'; |
---|
827 | *out++ = 't'; |
---|
828 | *out++ = 'a'; |
---|
829 | *out++ = '='; |
---|
830 | |
---|
831 | out = int2vhstr(out, (int)d); |
---|
832 | |
---|
833 | *out++ = ';'; |
---|
834 | *out++ = 'B'; |
---|
835 | *out++ = 's'; |
---|
836 | *out++ = 's'; |
---|
837 | *out++ = '='; |
---|
838 | |
---|
839 | out = int2vhstr(out, (int)b); |
---|
840 | |
---|
841 | *out++ = ';'; |
---|
842 | *out++ = 0; |
---|
843 | |
---|
844 | break; |
---|
845 | } |
---|
846 | |
---|
847 | /* qCRC, qRcmd, qu and qz will be added here */ |
---|
848 | break; |
---|
849 | } |
---|
850 | } |
---|
851 | |
---|
852 | |
---|
853 | |
---|
854 | |
---|
855 | |
---|
856 | |
---|
857 | /* Present thread in the variable length string format */ |
---|
858 | char* |
---|
859 | thread2vhstr(char *buf, int thread) |
---|
860 | { |
---|
861 | int i, nibble, shift; |
---|
862 | |
---|
863 | ASSERT(buf != NULL); |
---|
864 | |
---|
865 | for(i=0, shift=28; i<8; i++, shift-=4) |
---|
866 | { |
---|
867 | nibble = (thread >> shift) & 0x0f; |
---|
868 | |
---|
869 | if (nibble != 0) |
---|
870 | { |
---|
871 | break; |
---|
872 | } |
---|
873 | } |
---|
874 | |
---|
875 | if (i == 8) |
---|
876 | { |
---|
877 | *buf++ = '0'; |
---|
878 | return buf; |
---|
879 | } |
---|
880 | |
---|
881 | *buf++ = gdb_hexchars[nibble]; |
---|
882 | |
---|
883 | for(i++, shift-=4; i<8; i++, shift-=4, buf++) |
---|
884 | { |
---|
885 | nibble = (thread >> shift) & 0x0f; |
---|
886 | *buf = gdb_hexchars[nibble]; |
---|
887 | } |
---|
888 | |
---|
889 | return buf; |
---|
890 | } |
---|
891 | |
---|
892 | /* Present thread in fixed length string format */ |
---|
893 | char* |
---|
894 | thread2fhstr(char *buf, int thread) |
---|
895 | { |
---|
896 | int i, nibble, shift; |
---|
897 | |
---|
898 | ASSERT(buf != NULL); |
---|
899 | |
---|
900 | for(i=0; i<8; i++, buf++) |
---|
901 | { |
---|
902 | *buf = '0'; |
---|
903 | } |
---|
904 | |
---|
905 | for(i=0, shift=28; i<8; i++, shift-=4, buf++) |
---|
906 | { |
---|
907 | nibble = (thread >> shift) & 0x0f; |
---|
908 | *buf = gdb_hexchars[nibble]; |
---|
909 | } |
---|
910 | |
---|
911 | return buf; |
---|
912 | } |
---|
913 | |
---|
914 | /* Parse thread presented in fixed length format */ |
---|
915 | const char* |
---|
916 | fhstr2thread(const char *buf, int *thread) |
---|
917 | { |
---|
918 | int i, val, nibble; |
---|
919 | |
---|
920 | ASSERT(buf != NULL); |
---|
921 | ASSERT(thread != NULL); |
---|
922 | |
---|
923 | for(i=0; i<8; i++, buf++) |
---|
924 | { |
---|
925 | if (*buf != '0') |
---|
926 | { |
---|
927 | return NULL; |
---|
928 | } |
---|
929 | } |
---|
930 | |
---|
931 | val = 0; |
---|
932 | |
---|
933 | for(i=0; i<8; i++, buf++) |
---|
934 | { |
---|
935 | if (!hstr2nibble(buf, &nibble)) |
---|
936 | { |
---|
937 | return NULL; |
---|
938 | } |
---|
939 | |
---|
940 | ASSERT(nibble >=0 && nibble < 16); |
---|
941 | |
---|
942 | val = (val << 4) | nibble; |
---|
943 | } |
---|
944 | |
---|
945 | *thread = val; |
---|
946 | |
---|
947 | return buf; |
---|
948 | } |
---|
949 | |
---|
950 | /* Parse thread presented in variable length format */ |
---|
951 | const char* |
---|
952 | vhstr2thread(const char *buf, int *thread) |
---|
953 | { |
---|
954 | int i, val, nibble; |
---|
955 | int found_zero, lim; |
---|
956 | |
---|
957 | ASSERT(buf != NULL); |
---|
958 | ASSERT(thread != NULL); |
---|
959 | |
---|
960 | |
---|
961 | /* If we have leading zeros, skip them */ |
---|
962 | found_zero = 0; |
---|
963 | |
---|
964 | for(i=0; i<16; i++, buf++) |
---|
965 | { |
---|
966 | if (*buf != '0') |
---|
967 | { |
---|
968 | break; |
---|
969 | } |
---|
970 | |
---|
971 | found_zero = 1; |
---|
972 | } |
---|
973 | |
---|
974 | /* Process non-zeros */ |
---|
975 | lim = 16 - i; |
---|
976 | val = 0; |
---|
977 | |
---|
978 | for(i=0; i<lim; i++, buf++) |
---|
979 | { |
---|
980 | if (!hstr2nibble(buf, &nibble)) |
---|
981 | { |
---|
982 | if (i == 0 && !found_zero) |
---|
983 | { |
---|
984 | /* Empty value */ |
---|
985 | return NULL; |
---|
986 | } |
---|
987 | |
---|
988 | *thread = val; |
---|
989 | return buf; |
---|
990 | } |
---|
991 | |
---|
992 | ASSERT(nibble >= 0 && nibble < 16); |
---|
993 | |
---|
994 | val = (val << 4) | nibble; |
---|
995 | } |
---|
996 | |
---|
997 | if (hstr2nibble(buf, &nibble)) |
---|
998 | { |
---|
999 | /* Value is too long */ |
---|
1000 | return NULL; |
---|
1001 | } |
---|
1002 | |
---|
1003 | *thread = val; |
---|
1004 | return buf; |
---|
1005 | } |
---|
1006 | |
---|
1007 | |
---|
1008 | /* Present integer in the variable length string format */ |
---|
1009 | char* |
---|
1010 | int2vhstr(char *buf, int val) |
---|
1011 | { |
---|
1012 | int i, nibble, shift; |
---|
1013 | |
---|
1014 | ASSERT(buf != NULL); |
---|
1015 | |
---|
1016 | for(i=0, shift=28; i<8; i++, shift-=4) |
---|
1017 | { |
---|
1018 | nibble = (val >> shift) & 0x0f; |
---|
1019 | |
---|
1020 | if (nibble != 0) |
---|
1021 | { |
---|
1022 | break; |
---|
1023 | } |
---|
1024 | } |
---|
1025 | |
---|
1026 | if (i == 8) |
---|
1027 | { |
---|
1028 | *buf++ = '0'; |
---|
1029 | return buf; |
---|
1030 | } |
---|
1031 | |
---|
1032 | *buf++ = gdb_hexchars[nibble]; |
---|
1033 | |
---|
1034 | for(i++, shift-=4; i<8; i++, shift-=4, buf++) |
---|
1035 | { |
---|
1036 | nibble = (val >> shift) & 0x0f; |
---|
1037 | *buf = gdb_hexchars[nibble]; |
---|
1038 | } |
---|
1039 | |
---|
1040 | return buf; |
---|
1041 | } |
---|
1042 | |
---|
1043 | /* Present int in fixed length string format */ |
---|
1044 | char* |
---|
1045 | int2fhstr(char *buf, int val) |
---|
1046 | { |
---|
1047 | int i, nibble, shift; |
---|
1048 | |
---|
1049 | ASSERT(buf != NULL); |
---|
1050 | |
---|
1051 | for(i=0, shift=28; i<8; i++, shift-=4, buf++) |
---|
1052 | { |
---|
1053 | nibble = (val >> shift) & 0x0f; |
---|
1054 | *buf = gdb_hexchars[nibble]; |
---|
1055 | } |
---|
1056 | |
---|
1057 | return buf; |
---|
1058 | } |
---|
1059 | |
---|
1060 | /* Parse int presented in fixed length format */ |
---|
1061 | const char* |
---|
1062 | fhstr2int(const char *buf, int *ival) |
---|
1063 | { |
---|
1064 | int i, val, nibble; |
---|
1065 | |
---|
1066 | ASSERT(buf != NULL); |
---|
1067 | ASSERT(ival != NULL); |
---|
1068 | |
---|
1069 | val = 0; |
---|
1070 | |
---|
1071 | for(i=0; i<8; i++, buf++) |
---|
1072 | { |
---|
1073 | if (!hstr2nibble(buf, &nibble)) |
---|
1074 | { |
---|
1075 | return NULL; |
---|
1076 | } |
---|
1077 | |
---|
1078 | ASSERT(nibble >=0 && nibble < 16); |
---|
1079 | |
---|
1080 | val = (val << 4) | nibble; |
---|
1081 | } |
---|
1082 | |
---|
1083 | *ival = val; |
---|
1084 | |
---|
1085 | return buf; |
---|
1086 | } |
---|
1087 | |
---|
1088 | /* Parse int presented in variable length format */ |
---|
1089 | const char* |
---|
1090 | vhstr2int(const char *buf, int *ival) |
---|
1091 | { |
---|
1092 | int i, val, nibble; |
---|
1093 | int found_zero, lim; |
---|
1094 | |
---|
1095 | ASSERT(buf != NULL); |
---|
1096 | ASSERT(ival != NULL); |
---|
1097 | |
---|
1098 | |
---|
1099 | /* If we have leading zeros, skip them */ |
---|
1100 | found_zero = 0; |
---|
1101 | |
---|
1102 | for(i=0; i<8; i++, buf++) |
---|
1103 | { |
---|
1104 | if (*buf != '0') |
---|
1105 | { |
---|
1106 | break; |
---|
1107 | } |
---|
1108 | |
---|
1109 | found_zero = 1; |
---|
1110 | } |
---|
1111 | |
---|
1112 | /* Process non-zeros */ |
---|
1113 | lim = 8 - i; |
---|
1114 | val = 0; |
---|
1115 | |
---|
1116 | for(i=0; i<lim; i++, buf++) |
---|
1117 | { |
---|
1118 | if (!hstr2nibble(buf, &nibble)) |
---|
1119 | { |
---|
1120 | if (i == 0 && !found_zero) |
---|
1121 | { |
---|
1122 | /* Empty value */ |
---|
1123 | return NULL; |
---|
1124 | } |
---|
1125 | |
---|
1126 | *ival = val; |
---|
1127 | return buf; |
---|
1128 | } |
---|
1129 | |
---|
1130 | ASSERT(nibble >= 0 && nibble < 16); |
---|
1131 | |
---|
1132 | val = (val << 4) | nibble; |
---|
1133 | } |
---|
1134 | |
---|
1135 | if (hstr2nibble(buf, &nibble)) |
---|
1136 | { |
---|
1137 | /* Value is too long */ |
---|
1138 | return NULL; |
---|
1139 | } |
---|
1140 | |
---|
1141 | *ival = val; |
---|
1142 | return buf; |
---|
1143 | } |
---|
1144 | |
---|
1145 | int |
---|
1146 | hstr2byte(const char *buf, int *bval) |
---|
1147 | { |
---|
1148 | int hnib, lnib; |
---|
1149 | |
---|
1150 | ASSERT(buf != NULL); |
---|
1151 | ASSERT(bval != NULL); |
---|
1152 | |
---|
1153 | if (!hstr2nibble(buf, &hnib) || !hstr2nibble(buf+1, &lnib)) |
---|
1154 | { |
---|
1155 | return 0; |
---|
1156 | } |
---|
1157 | |
---|
1158 | *bval = (hnib << 4) | lnib; |
---|
1159 | return 1; |
---|
1160 | } |
---|
1161 | |
---|
1162 | int |
---|
1163 | hstr2nibble(const char *buf, int *nibble) |
---|
1164 | { |
---|
1165 | int ch; |
---|
1166 | |
---|
1167 | ASSERT(buf != NULL); |
---|
1168 | ASSERT(nibble != NULL); |
---|
1169 | |
---|
1170 | ch = *buf; |
---|
1171 | |
---|
1172 | if (ch >= '0' && ch <= '9') |
---|
1173 | { |
---|
1174 | *nibble = ch - '0'; |
---|
1175 | return 1; |
---|
1176 | } |
---|
1177 | |
---|
1178 | if (ch >= 'a' && ch <= 'f') |
---|
1179 | { |
---|
1180 | *nibble = ch - 'a' + 10; |
---|
1181 | return 1; |
---|
1182 | } |
---|
1183 | |
---|
1184 | if (ch >= 'A' && ch <= 'F') |
---|
1185 | { |
---|
1186 | *nibble = ch - 'A' + 10; |
---|
1187 | return 1; |
---|
1188 | } |
---|
1189 | |
---|
1190 | return 0; |
---|
1191 | } |
---|
1192 | |
---|
1193 | static volatile char mem_err = 0; |
---|
1194 | void set_mem_err(void); |
---|
1195 | static void (*volatile mem_fault_routine) (void) = NULL; |
---|
1196 | |
---|
1197 | |
---|
1198 | |
---|
1199 | /* convert count bytes of the memory pointed to by mem into hex string, |
---|
1200 | placing result in buf, return pointer to next location in hex strng |
---|
1201 | in case of success or NULL otherwise */ |
---|
1202 | char* |
---|
1203 | mem2hstr(char *buf, const unsigned char *mem, int count) |
---|
1204 | { |
---|
1205 | int i; |
---|
1206 | unsigned char ch; |
---|
1207 | |
---|
1208 | mem_err = 0; |
---|
1209 | |
---|
1210 | mem_fault_routine = set_mem_err; |
---|
1211 | |
---|
1212 | for (i = 0; i<count; i++, mem++) |
---|
1213 | { |
---|
1214 | ch = get_byte (mem); |
---|
1215 | if (mem_err) |
---|
1216 | { |
---|
1217 | mem_fault_routine = NULL; |
---|
1218 | return NULL; |
---|
1219 | } |
---|
1220 | |
---|
1221 | *buf++ = gdb_hexchars[ch >> 4]; |
---|
1222 | *buf++ = gdb_hexchars[ch & 0x0f]; |
---|
1223 | } |
---|
1224 | |
---|
1225 | *buf = 0; |
---|
1226 | |
---|
1227 | mem_fault_routine = NULL; |
---|
1228 | |
---|
1229 | return buf; |
---|
1230 | } |
---|
1231 | |
---|
1232 | /* convert the hex string to into count bytes of binary to be placed in mem |
---|
1233 | return 1 in case of success and 0 otherwise */ |
---|
1234 | int |
---|
1235 | hstr2mem (unsigned char *mem, const char *buf, int count) |
---|
1236 | { |
---|
1237 | int i; |
---|
1238 | int bval; |
---|
1239 | |
---|
1240 | mem_err = 0; |
---|
1241 | |
---|
1242 | mem_fault_routine = set_mem_err; |
---|
1243 | |
---|
1244 | for (i = 0; i < count; i++, mem++, buf+=2) |
---|
1245 | { |
---|
1246 | if (!hstr2byte(buf, &bval)) |
---|
1247 | { |
---|
1248 | mem_fault_routine = NULL; |
---|
1249 | return 0; |
---|
1250 | } |
---|
1251 | |
---|
1252 | ASSERT(bval >=0 && bval < 256); |
---|
1253 | |
---|
1254 | set_byte (mem, bval); |
---|
1255 | |
---|
1256 | if (mem_err) |
---|
1257 | { |
---|
1258 | mem_fault_routine = NULL; |
---|
1259 | return 0; |
---|
1260 | } |
---|
1261 | } |
---|
1262 | |
---|
1263 | mem_fault_routine = NULL; |
---|
1264 | return 1; |
---|
1265 | } |
---|
1266 | |
---|
1267 | void |
---|
1268 | set_mem_err (void) |
---|
1269 | { |
---|
1270 | mem_err = 1; |
---|
1271 | } |
---|
1272 | |
---|
1273 | |
---|
1274 | /* These are separate functions so that they are so short and sweet |
---|
1275 | that the compiler won't save any registers (if there is a fault |
---|
1276 | to mem_fault, they won't get restored, so there better not be any |
---|
1277 | saved). */ |
---|
1278 | |
---|
1279 | unsigned char |
---|
1280 | get_byte (const unsigned char *addr) |
---|
1281 | { |
---|
1282 | return *addr; |
---|
1283 | } |
---|
1284 | |
---|
1285 | void |
---|
1286 | set_byte (unsigned char *addr, int val) |
---|
1287 | { |
---|
1288 | *addr = val; |
---|
1289 | } |
---|
1290 | |
---|
1291 | |
---|
1292 | |
---|
1293 | |
---|
1294 | |
---|
1295 | |
---|
1296 | |
---|
1297 | |
---|
1298 | |
---|
1299 | /* |
---|
1300 | * From here down, the code is CPU model specific and generally maps |
---|
1301 | * the RTEMS thread context format to gdb's. |
---|
1302 | */ |
---|
1303 | |
---|
1304 | #if defined(__i386__) |
---|
1305 | |
---|
1306 | #include "i386-stub.h" |
---|
1307 | |
---|
1308 | /* Packing order of registers */ |
---|
1309 | enum i386_stub_regnames { |
---|
1310 | I386_STUB_REG_EAX, I386_STUB_REG_ECX, I386_STUB_REG_EDX, I386_STUB_REG_EBX, |
---|
1311 | I386_STUB_REG_ESP, I386_STUB_REG_EBP, I386_STUB_REG_ESI, I386_STUB_REG_EDI, |
---|
1312 | I386_STUB_REG_PC /* also known as eip */ , |
---|
1313 | I386_STUB_REG_PS /* also known as eflags */ , |
---|
1314 | I386_STUB_REG_CS, I386_STUB_REG_SS, I386_STUB_REG_DS, I386_STUB_REG_ES, |
---|
1315 | I386_STUB_REG_FS, I386_STUB_REG_GS |
---|
1316 | }; |
---|
1317 | |
---|
1318 | void rtems_gdb_stub_get_registers_from_context( |
---|
1319 | int *registers, |
---|
1320 | Thread_Control *th |
---|
1321 | ) |
---|
1322 | { |
---|
1323 | registers[I386_STUB_REG_EAX] = 0; |
---|
1324 | registers[I386_STUB_REG_ECX] = 0; |
---|
1325 | registers[I386_STUB_REG_EDX] = 0; |
---|
1326 | registers[I386_STUB_REG_EBX] = (int)th->Registers.ebx; |
---|
1327 | registers[I386_STUB_REG_ESP] = (int)th->Registers.esp; |
---|
1328 | registers[I386_STUB_REG_EBP] = (int)th->Registers.ebp; |
---|
1329 | registers[I386_STUB_REG_ESI] = (int)th->Registers.esi; |
---|
1330 | registers[I386_STUB_REG_EDI] = (int)th->Registers.edi; |
---|
1331 | registers[I386_STUB_REG_PC] = *(int *)th->Registers.esp; |
---|
1332 | registers[I386_STUB_REG_PS] = (int)th->Registers.eflags; |
---|
1333 | |
---|
1334 | /* RTEMS never changes base registers (especially once |
---|
1335 | threads are running) */ |
---|
1336 | |
---|
1337 | registers[I386_STUB_REG_CS] = 0x8; /* We just know these values */ |
---|
1338 | registers[I386_STUB_REG_SS] = 0x10; |
---|
1339 | registers[I386_STUB_REG_DS] = 0x10; |
---|
1340 | registers[I386_STUB_REG_ES] = 0x10; |
---|
1341 | registers[I386_STUB_REG_FS] = 0x10; |
---|
1342 | registers[I386_STUB_REG_GS] = 0x10; |
---|
1343 | } |
---|
1344 | |
---|
1345 | int rtems_gdb_stub_get_offsets( |
---|
1346 | unsigned char **text_addr, |
---|
1347 | unsigned char **data_addr, |
---|
1348 | unsigned char **bss_addr |
---|
1349 | ) |
---|
1350 | { |
---|
1351 | extern unsigned char _text_start; |
---|
1352 | extern unsigned char _data_start; |
---|
1353 | extern unsigned char _bss_start; |
---|
1354 | |
---|
1355 | *text_addr = &_text_start; |
---|
1356 | *data_addr = &_data_start; |
---|
1357 | *bss_addr = &_bss_start; |
---|
1358 | |
---|
1359 | return 1; |
---|
1360 | } |
---|
1361 | |
---|
1362 | |
---|
1363 | |
---|
1364 | |
---|
1365 | |
---|
1366 | #elif defined(__mips__) |
---|
1367 | |
---|
1368 | |
---|
1369 | void rtems_gdb_stub_get_registers_from_context( |
---|
1370 | int *registers, |
---|
1371 | Thread_Control *th |
---|
1372 | ) |
---|
1373 | { |
---|
1374 | registers[S0] = (unsigned)th->Registers.s0; |
---|
1375 | registers[S1] = (unsigned)th->Registers.s1; |
---|
1376 | registers[S2] = (unsigned)th->Registers.s2; |
---|
1377 | registers[S3] = (unsigned)th->Registers.s3; |
---|
1378 | registers[S4] = (unsigned)th->Registers.s4; |
---|
1379 | registers[S5] = (unsigned)th->Registers.s5; |
---|
1380 | registers[S6] = (unsigned)th->Registers.s6; |
---|
1381 | registers[S7] = (unsigned)th->Registers.s7; |
---|
1382 | |
---|
1383 | registers[SP] = (unsigned)th->Registers.sp; |
---|
1384 | registers[RA] = (unsigned)th->Registers.ra; |
---|
1385 | |
---|
1386 | registers[SR] = (unsigned)th->Registers.c0_sr; |
---|
1387 | registers[PC] = (unsigned)th->Registers.c0_epc; |
---|
1388 | } |
---|
1389 | |
---|
1390 | |
---|
1391 | int rtems_gdb_stub_get_offsets( |
---|
1392 | unsigned char **text_addr, |
---|
1393 | unsigned char **data_addr, |
---|
1394 | unsigned char **bss_addr |
---|
1395 | ) |
---|
1396 | { |
---|
1397 | /* |
---|
1398 | extern uint32_t _ftext; |
---|
1399 | extern uint32_t _fdata; |
---|
1400 | extern uint32_t _bss_start; |
---|
1401 | |
---|
1402 | *text_addr = &_ftext; |
---|
1403 | *data_addr = &_fdata; |
---|
1404 | *bss_addr = &_bss_start; |
---|
1405 | */ |
---|
1406 | *text_addr = 0; |
---|
1407 | *data_addr = 0; |
---|
1408 | *bss_addr = 0; |
---|
1409 | return 1; |
---|
1410 | } |
---|
1411 | |
---|
1412 | #elif defined(__mc68000__) |
---|
1413 | |
---|
1414 | |
---|
1415 | void rtems_gdb_stub_get_registers_from_context( |
---|
1416 | int *registers, |
---|
1417 | Thread_Control *th |
---|
1418 | ) |
---|
1419 | { |
---|
1420 | /* |
---|
1421 | * how about register D0/D1/A0/A1 |
---|
1422 | * they are located on thread stack ... |
---|
1423 | * -> they are not needed for context switch |
---|
1424 | */ |
---|
1425 | registers[D0] = 0; |
---|
1426 | registers[D1] = 0; |
---|
1427 | registers[D2] = (uint32_t)th->Registers.d2; |
---|
1428 | registers[D3] = (uint32_t)th->Registers.d3; |
---|
1429 | registers[D4] = (uint32_t)th->Registers.d4; |
---|
1430 | registers[D5] = (uint32_t)th->Registers.d5; |
---|
1431 | registers[D6] = (uint32_t)th->Registers.d6; |
---|
1432 | registers[D7] = (uint32_t)th->Registers.d7; |
---|
1433 | |
---|
1434 | registers[A0] = 0; |
---|
1435 | registers[A1] = 0; |
---|
1436 | registers[A2] = (uint32_t)th->Registers.a2; |
---|
1437 | registers[A3] = (uint32_t)th->Registers.a3; |
---|
1438 | registers[A4] = (uint32_t)th->Registers.a4; |
---|
1439 | registers[A5] = (uint32_t)th->Registers.a5; |
---|
1440 | registers[A6] = (uint32_t)th->Registers.a6; |
---|
1441 | registers[A7] = (uint32_t)th->Registers.a7_msp; |
---|
1442 | |
---|
1443 | registers[PS] = (uint32_t)th->Registers.sr; |
---|
1444 | #if 0 |
---|
1445 | registers[PC] = *(uint32_t*)th->Registers.a7_msp; /* *SP = ret adr */ |
---|
1446 | #else |
---|
1447 | registers[PC] = (uint32_t)_CPU_Context_switch; |
---|
1448 | #endif |
---|
1449 | } |
---|
1450 | |
---|
1451 | |
---|
1452 | int rtems_gdb_stub_get_offsets( |
---|
1453 | unsigned char **text_addr, |
---|
1454 | unsigned char **data_addr, |
---|
1455 | unsigned char **bss_addr |
---|
1456 | ) |
---|
1457 | { |
---|
1458 | /* |
---|
1459 | extern uint32_t _ftext; |
---|
1460 | extern uint32_t _fdata; |
---|
1461 | extern uint32_t _bss_start; |
---|
1462 | |
---|
1463 | *text_addr = &_ftext; |
---|
1464 | *data_addr = &_fdata; |
---|
1465 | *bss_addr = &_bss_start; |
---|
1466 | */ |
---|
1467 | *text_addr = 0; |
---|
1468 | *data_addr = 0; |
---|
1469 | *bss_addr = 0; |
---|
1470 | return 1; |
---|
1471 | } |
---|
1472 | |
---|
1473 | #else |
---|
1474 | #error "rtems-gdb-stub.c: Unsupported CPU!" |
---|
1475 | #endif |
---|