annotate packages/hal/common/current/include/dbg-threads-api.h @ 156:b939e9cada46

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author jlarmour
date Fri, 06 Apr 2001 17:20:13 +0000
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1 //========================================================================
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2 //
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3 // dbg-threads-api.h
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4 //
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5 // Supports thread-aware debugging
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6 //
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7 //========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): Red Hat, nickg
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35 // Contributors: Red Hat, nickg
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36 // Date: 1998-08-25
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37 // Purpose:
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38 // Description: These are the calls used to extract operating system
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39 // specific information used in supporting thread aware
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40 // debugging. The Operating Environment being debugged
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41 // needs to supply these functions.
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42 // Usage: This header is not to be included by user code.
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43 //
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44 //####DESCRIPTIONEND####
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45 //
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46 //========================================================================
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47
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48 #if !defined(DBG_THREADS_API_INCLUDED)
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49 #define DBG_THREADS_API_INCLUDED 1
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50
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51 #include <cyg/infra/cyg_type.h> /* externC */
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52
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53 #define has_thread_void 0
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54 #define has_thread_current 1
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55 #define has_thread_registers 2
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56 #define has_thread_reg_change 4
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57 #define has_thread_list 8
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58 #define has_thread_info 16
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59
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60 typedef unsigned char threadref[8] ;
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61
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62 struct dbg_capabilities
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63 {
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64 unsigned long mask1 ;
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65 } ;
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67
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68 /* fill in the list of thread aware capabilities */
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69 externC int dbg_thread_capabilities(struct dbg_capabilities * cbp) ;
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71
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72 /* Fillin the identifier of the current thread */
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73 /* return 1 if defined, 0 if not defined */
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74 externC int dbg_currthread(threadref * varparm) ;
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75
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76 /* Return the unique ID number of a given thread. */
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77 /* Return 0 if not valid. */
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78 externC int dbg_thread_id(threadref *threadid);
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79
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80 /* Return the unique ID number of the current thread. */
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81 externC int dbg_currthread_id(void);
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82
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83 /* get the first or next member of the list of known threads */
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84 externC int dbg_threadlist(int startflag,
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85 threadref * lastthreadid,
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86 threadref * next_thread
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87 ) ;
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88
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89 /* return 1 if next_threadid has been filled in with a value */
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90 /* return 0 if there are none or no more */
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91
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92 /* The O.S can fill in the following information about a thread when queried.
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93 The structure of thise strings is determined by the O.S.
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94 It is display oriented, so figure out what the users need to see.
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95 Nulls are OK but GDB will fill some not so meaningful data.
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96 These pointers may be in the calles private structures, the info will
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97 get copied immediatly after the call to retreive it.
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98 */
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99 struct cygmon_thread_debug_info
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100 {
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101 threadref thread_id ;
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102 int context_exists ; /* To the point where examining its state,
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103 registers and stack makes sense to GDB */
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104 char * thread_display ; /* As shown in thread status window, name, state */
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105 char * unique_thread_name ; /* human readable identifier, window label */
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106 char * more_display ; /* more detailed info about thread.
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107 priority, queuedepth, state, stack usage, statistics */
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108 } ;
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109
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110
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111
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112
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113 externC int dbg_threadinfo(
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114 threadref * threadid,
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115 struct cygmon_thread_debug_info * info) ;
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116
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117 /* Return 1 if threadid is defined and info copied, 0 otherwise */
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118
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119 /* The O.S should fillin the array of registers using values from the
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120 saves context. The array MUST be in GDB register save order even if
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121 the saved context is different or smaller. Do not alter the values of
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122 registers which are NOT in the O.S. thread context. Their default values
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123 have already been assigned.
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124 */
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125
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126 externC int dbg_getthreadreg(
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127 threadref * osthreadid,
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128 int regcount, /* count of registers in the array */
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129 void * regval) ; /* fillin this array */
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130
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131
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132 /* The O.S. should scan through this list of registers which are in
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133 GDB order and the O.S. should replace the values of all registers
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134 which are defined in the saved context of thread or process identified
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135 by osthreadid. Return 0 if the threadis does not map to a known
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136 process or other error. Return 1 if the setting is successful. */
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137
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138 externC int dbg_setthreadreg(
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139 threadref * osthreadid,
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140 int regcount , /* number of registers */
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141 void * regval) ;
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142
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143 /* Control over OS scheduler. With the scheduler locked it should not
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144 perform any rescheduling in response to interrupts. */
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145 externC int dbg_scheduler(
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146 threadref * osthreadid,
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147 int lock, /* 0 == unlock, 1 == lock */
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148 int mode); /* 0 == step, 1 == continue */
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149
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150
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152 #endif /* DBG_THREADS_API_INCLUDED */