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annotate packages/hal/common/current/src/dbg-threads-syscall.c @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
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 // dbg-threads-syscall.c
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4 //
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5 // Pseudo system calls for multi-threaded debug support
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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.
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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): Red Hat, nickg
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43 // Contributors: Red Hat, nickg
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44 // Date: 1998-08-25
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45 // Purpose:
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46 // Description: Pseudo system calls to bind system specific multithread
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47 // debug support with a ROM monitor, cygmon. We call it
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48 // Cygmon, but the feature lives in libstub.
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49 // Usage:
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50 //
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51 //####DESCRIPTIONEND####
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52 //
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53 //========================================================================
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54
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55 #include <pkgconf/system.h>
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56 #include <pkgconf/hal.h>
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57
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58 #if !defined(CYGPKG_KERNEL) && defined(CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT)
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59
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60 /* Only include this code if we do not have a kernel. Otherwise the kernel
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61 * supplies these functions for the app we are linked with.
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62 */
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63
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64 #include <cyg/hal/dbg-threads-api.h>
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65 #include <cyg/hal/dbg-thread-syscall.h>
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66
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67
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68 static dbg_syscall_func * dbg_syscall_ptr ;
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69
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70 static union dbg_thread_syscall_parms tcall ;
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71
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72 /* ----- INIT_THREADS_SYSCALL --------------------------------------- */
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73 /* Some external bing and configuration logic knows how to setup
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74 the ststem calls. In the first implementation, we have used a vector
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75 in the secondary vector table. This functions allows us to isolate that
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76 sort of system specific detail. Similarly, we do not export the
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77 specific detail of a dbg_syscall_func.
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78 */
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79
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80
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81 void init_threads_syscall(void * vector)
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82 {
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83 dbg_syscall_ptr = vector ; /* AH, the easy compatability of the
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84 void pointer*/
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85 } /* init_threads_syscall */
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86
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87 /* All forms of failure return 0 */
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88 /* Whether non support, incomplete initialization, unknown thread */
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89 static __inline__ int dbg_thread_syscall(
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90 enum dbg_syscall_ids id)
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91 {
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92 dbg_syscall_func f ; /* double indirect via */
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93 if (0 == dbg_syscall_ptr) return 0; /* dbg_syscall_ptr never init'd */
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94 if (0 ==(f = *dbg_syscall_ptr)) return 0 ; /* vector not initialized */
6
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95 return (*f)(id,&tcall);
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96 }
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97
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98
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99
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100
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101 /* ------- INIT_THREAD_SYSCALL ------------------------------------------- */
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102 /* Received the address of the entry in the secondary interrupt vector table */
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103 /* This table is the interchange between the O.S. and Cygmon/libstub */
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104 /* This could get more complex so, I am doing it with a function
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105 rather than exposing the internals.
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106 */
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107 void init_thread_syscall(void * vector)
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108 {
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109 dbg_syscall_ptr = vector ;
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110 }
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111
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112 int dbg_thread_capabilities(struct dbg_capabilities * cbp)
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113 {
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114 #if 0
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115 tcall.cap_parms.abilities = cbp ;
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116 return dbg_thread_syscall(dbg_capabilities_func) ;
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117 #else
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118 cbp->mask1 = has_thread_current |
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119 has_thread_registers |
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120 has_thread_reg_change |
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121 has_thread_list |
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122 has_thread_info ;
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123 return 1 ;
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124 #endif
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125 }
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126
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127 int dbg_currthread(threadref * varparm)
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128 {
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129 tcall.currthread_parms.ref = varparm ;
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130 return dbg_thread_syscall(dbg_currthread_func) ;
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131 }
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132
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133
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134 int dbg_threadlist(
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135 int startflag,
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136 threadref * lastthreadid,
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137 threadref * next_thread
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138 )
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139 {
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140 tcall.threadlist_parms.startflag = startflag ;
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141 tcall.threadlist_parms.lastid = lastthreadid ;
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142 tcall.threadlist_parms.nextthreadid = next_thread ;
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143 return dbg_thread_syscall(dbg_threadlist_func) ;
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144 }
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145
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146 int dbg_threadinfo(
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147 threadref * threadid,
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148 struct cygmon_thread_debug_info * info)
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149 {
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150 tcall.info_parms.ref = threadid ;
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151 tcall.info_parms.info = info ;
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152 return dbg_thread_syscall(dbg_threadinfo_func) ;
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153 }
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154
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155 int dbg_getthreadreg(
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156 threadref * osthreadid,
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157 int regcount, /* count of registers in the array */
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158 void * regval) /* fillin this array */
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159 {
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160 tcall.reg_parms.thread = osthreadid ;
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161 tcall.reg_parms.regcount = regcount ;
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162 tcall.reg_parms.registers = regval ;
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163 return dbg_thread_syscall(dbg_getthreadreg_func) ;
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164 }
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165
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166 int dbg_setthreadreg(
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167 threadref * osthreadid,
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168 int regcount , /* number of registers */
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169 void * regval)
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170 {
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171 tcall.reg_parms.thread = osthreadid ;
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172 tcall.reg_parms.regcount = regcount ;
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173 tcall.reg_parms.registers = regval ;
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174 return dbg_thread_syscall(dbg_setthreadreg_func) ;
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175 } /* dbg_setthreadreg */
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176
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177 int dbg_scheduler(threadref *thread_id, int lock, int mode)
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178 {
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179 tcall.scheduler_parms.thread = thread_id;
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180 tcall.scheduler_parms.lock = lock ;
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181 tcall.scheduler_parms.mode = mode ;
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182
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183 return dbg_thread_syscall(dbg_scheduler_func) ;
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184 }
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185
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186
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187
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188 #if (CYG_BYTEORDER == CYG_LSBFIRST)
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189
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190 unsigned long swap32(unsigned long x)
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191 {
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192 unsigned long r = 0;
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193
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194 r |= (x>>24)&0xFF;
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195 r |= ((x>>16)&0xFF)<<8;
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196 r |= ((x>>8)&0xFF)<<16;
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197 r |= ((x)&0xFF)<<24;
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198
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199 return r;
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200 }
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201
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202 #else
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203
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204 #define swap32(x) ((unsigned long)(x))
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205
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206 #endif
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207
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208 int dbg_currthread_id(void)
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209 {
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210 threadref ref;
36
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211 if( dbg_currthread( &ref ) )
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212 return (cyg_uint16)swap32(((unsigned long *)ref)[1]);
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213 else return 0;
6
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214 }
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215
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216 #endif