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annotate packages/cygmon/current/misc/monitor.c @ 76:435cced73e2f ecos-v1_3_1-release

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eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
author jlarmour
date Tue, 28 Mar 2000 14:10:45 +0000
parents
children 02ea4320376c
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76
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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1 //==========================================================================
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2 //
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3 // monitor.c
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4 //
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5 // Monitor shell and main routines for CygMON the Wonder Monitor
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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):
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35 // Contributors: gthomas
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36 // Date: 1999-10-20
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37 // Purpose: Monitor shell and main routines for CygMON the Wonder Monitor
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38 // Description:
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39 //
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40 //
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41 //####DESCRIPTIONEND####
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42 //
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43 //=========================================================================
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44
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45 /* Platform-independent code for cygmon */
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46
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47 #include <stdlib.h>
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48 #include <unistd.h>
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49 #ifdef HAVE_BSP
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50 #include <bsp/bsp.h>
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51 #include <bsp/cpu.h>
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52 #include <bsp/hex-utils.h>
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53 #endif
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54 #include <monitor.h>
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55 #ifdef HAVE_BSP
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56 #include "cpu_info.h"
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57 #endif
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58 #include <ledit.h>
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59 #include <signal.h>
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60 #include <string.h>
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61 #include <ctype.h>
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62
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63 #if USE_CYGMON_PROTOTYPES
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64 /* Use common prototypes */
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65 /* Some of the composed board.h files compose these
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66 prototypes redundently, but if they dont,
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67 these are the common definitions */
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68 #include "fmt_util.h" /* Interface to string formatting utilities */
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69 #include "tservice.h" /* Interface to target specific services */
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70 #include "generic-stub.h" /* from libstub */
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71 #endif /* USE_CYGMON_PROTOTYPES */
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72
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73 static int cygmon_handle_exception (int sigval);
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74 static void monitor_take_control (void);
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75
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76 #if CYGMON_SYSTEM_SERVICES
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77 extern int process_syscall (int syscall_num);
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78 #endif
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79
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80 int stub_is_active = 0;
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81 mem_addr_t last_pc;
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82
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83 #ifdef HAVE_BSP
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84 static int mon_dbg_handler(int exc_nr, void *regs);
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85 static int mon_kill_handler(int exc_nr, void *regs);
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86
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87 #define __is_breakpoint_function() (get_pc() == (target_register_t)bsp_breakinsn)
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88
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89 /* Global pointer to current set of saved registers. */
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90 void *mon_saved_regs;
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91
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92 /* Original BSP debug vector replaced by monitor. */
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93 static bsp_handler_t old_dbg_vec;
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94
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95 #else
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96 static int handle_signal (int signal_val);
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97
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98 __PFI user_signal_handler = NULL;
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99 #endif
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100
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101 #ifdef __ECOS__
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102 extern (*__process_exception_vec)(int);
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103 #endif
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104
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105
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106 #ifdef MONITOR_CONTROL_INTERRUPTS
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107 /* This is set if the user wants interrupts enabled in the monitor. */
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108 static int monitor_interrupts_enabled;
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109 #endif
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110
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111
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112 #if NOMAIN
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113 int monitor_main (int argc, char **argv) /* Suppress default main() junk */
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114 #else
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115 int main (int argc, char **argv)
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116 #endif
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117 {
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118 #ifdef HAVE_BSP
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119 int cur_port;
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120 struct bsp_comm_info comm_info;
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121 #else
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122 /* Set up exception handling traps */
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123 initialize_stub ();
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124 #endif
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125
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126 initialize_mon ();
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127
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128 #ifdef HAVE_BSP
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129 /* get info on debug channel */
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130 cur_port = bsp_set_debug_comm(-1);
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131 bsp_sysinfo(BSP_INFO_COMM, cur_port, &comm_info);
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132
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133 /*
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134 * If we're using a network interface, don't install
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135 * the cygmon vectors. Currently, we only support stub
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136 * mode over a network connection.
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137 */
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138 if (comm_info.kind != BSP_COMM_ENET)
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139 {
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140 xprintf("\n");
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141 version ();
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142
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143 /* replace original BSP debug and kill handler with ours */
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144 old_dbg_vec = bsp_install_dbg_handler(mon_dbg_handler);
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145 (void)bsp_install_kill_handler(mon_kill_handler);
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146 }
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147 else
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148 {
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149 /* This forces the console to use the gdb channel. */
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150 bsp_set_console_comm(cur_port);
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151 }
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152 #else
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153 xprintf("\n");
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154 version ();
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155
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156 __process_exception_vec = cygmon_handle_exception;
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157 __process_exit_vec = monitor_take_control;
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158 #if CYGMON_SYSTEM_SERVICES
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159 __process_syscall_vec = process_syscall;
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160 #endif
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161 __process_signal_vec = handle_signal;
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162 __init_vec = install_breakpoints;
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163 __cleanup_vec = clear_breakpoints;
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164 #endif
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165
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166 #if 0
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167 #ifdef __ECOS__
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168 __process_exception_vec = cygmon_handle_exception;
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169 #endif
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170 #endif
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171
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172 while (1)
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173 {
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174 breakpoint ();
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175 if (switch_to_stub_flag)
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176 {
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177 xprintf("Switching to stub\n");
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178 switch_to_stub_flag = 0;
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179 }
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180 }
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181
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182 /* never reached */
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183 exit (0);
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184 }
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185
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186
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187 /* Transfer control to gdb stub */
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188
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189 int
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190 transfer_to_stub ()
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191 {
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192 /* Return back to the exception handler, but the exception handler
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193 should invoke the stub's exception handler instead of ours. */
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194 #ifdef HAVE_BSP
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195 (void)bsp_install_dbg_handler(old_dbg_vec);
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196 #else
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197 __switch_to_stub ();
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198 #endif
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199
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200 /* The stub is now active. */
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201 stub_is_active = 1;
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202 return -1;
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203 }
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204
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205 void
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206 clear_user_state (void)
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207 {
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208 #ifdef HAS_TIMER
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209 if (__timer_enabled ())
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210 __settimer (0, 0);
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211 #endif
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212
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213 clear_breakpoints ();
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214
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215 #ifdef HAVE_BSP
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216 bsp_singlestep_cleanup(mon_saved_regs);
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217 #else
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218 user_signal_handler = NULL;
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219 __clear_single_step ();
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220 #endif
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221 }
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222
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223 static void
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224 monitor_take_control (void)
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225 {
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226 stub_is_active = 0;
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227
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228 #ifdef HAVE_BSP
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229 /* replace original BSP debug trap handler with ours */
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230 (void)bsp_install_dbg_handler(mon_dbg_handler);
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231 #else
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232 clear_user_state ();
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233 __process_exception_vec = cygmon_handle_exception;
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234 #endif
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235 }
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236
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237
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238 #ifdef MONITOR_CONTROL_INTERRUPTS
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239 void
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240 monitor_enable_interrupts (void)
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241 {
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242 monitor_interrupts_enabled = 1;
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243 enable_interrupts ();
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244 }
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245
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246 void
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247 monitor_disable_interrupts (void)
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248 {
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249 monitor_interrupts_enabled = 0;
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250 disable_interrupts ();
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251 }
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252
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253 int
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254 monitor_interrupt_state (void)
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255 {
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256 return monitor_interrupts_enabled;
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257 }
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258 #endif
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259
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260 static int
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261 cygmon_handle_exception (int sigval)
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262 {
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263 target_register_t pc;
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264
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265 #ifdef MONITOR_CONTROL_INTERRUPTS
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266 if (monitor_interrupts_enabled)
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267 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
268 if (! __in_interrupt)
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diff changeset
269 enable_interrupts ();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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270 }
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271 #endif
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272
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273 #ifdef TARGET_EXCEPTION_CODE
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274 TARGET_EXCEPTION_CODE
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diff changeset
275 #endif
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276
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diff changeset
277 #ifndef HAVE_BSP
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diff changeset
278 if (sigval != SIGKILL)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
279 if (handle_signal (sigval) == 0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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280 return 0;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
281 #endif
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282
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
283 clear_user_state ();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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284
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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285 /* We may want to tweak the PC to point at the faulting instruction,
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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286 for example. (breakpoints on x86). */
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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287 #ifdef TARGET_ADJUST_PC
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288 TARGET_ADJUST_PC
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diff changeset
289 #endif
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290
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291 pc = get_pc();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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292 MAKE_STD_ADDR (pc, &last_pc);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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293
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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294 if ((sigval == SIGTRAP) && __is_breakpoint_function())
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295 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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296 /*
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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297 * This is the initial breakpoint inserted by the BSP
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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298 * Don't print anything for this as it is confusing
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299 */
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300 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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301 else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
302 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
303 if (sigval == SIGTRAP)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
304 xprintf ("Hit breakpoint");
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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305 else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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306 xprintf ("Got signal %d", sigval);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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307
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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308 xprintf (" at 0x%s\n", int2str (pc, 16, sizeof (target_register_t) * 2));
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
309
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
310 #ifdef DISASSEMBLER
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
311 if (!__is_breakpoint_function ())
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
312 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
313 do_dis (&last_pc);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
314 flush_dis ();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
315 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
316 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
317 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
318
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
319 monitor_take_control ();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
320
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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321 return monitor_loop ();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
322 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
323
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
324 #ifndef HAVE_BSP
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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325 /* Returns 0 if the program should restart at the point at which the
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
326 signal was received, -1 otherwise. */
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
327 static int
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328 handle_signal (int signal)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
329 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
330 if (signal == SIGKILL)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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331 return -1;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
332
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
333 if (user_signal_handler != NULL)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
334 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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335 int result = user_signal_handler (signal);
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336 switch (result)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
337 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
338 /* Don't ignore potential hardware signals. */
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
339 case 3:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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340 if (signal == SIGSEGV || signal == SIGBUS || signal == SIGFPE
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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341 || signal == SIGTRAP || signal == SIGILL)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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342 return -1;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
343
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
344 case 0:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
345 return 0;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
346
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
347 default:
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diff changeset
348 case 1:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
349 case 2:
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
350 return -1;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
351 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
352 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
353 return -1;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
354 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
355 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
356
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
357
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
358 void
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
359 version (void)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
360 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
361 #ifdef HAVE_BSP
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
362 struct bsp_platform_info platform;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
363 struct bsp_mem_info mem;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
364 int i;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
365 unsigned long u, totmem, topmem;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
366 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
367 extern char *build_date;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
368
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
369 xprintf ("Cygmon, the Cygnus ROM monitor.\n");
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
370 xprintf ("Copyright(c) 1997, 1998, 1999, 2000 Red Hat\n\n");
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
371 xprintf ("Version: %s\nThis image was built on %s\n\n",
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
372 VERSION, build_date);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
373
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
374 #ifdef HAVE_BSP
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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diff changeset
375 bsp_sysinfo(BSP_INFO_PLATFORM, &platform);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
376
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
377 totmem = topmem = 0;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
378 i = 0;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
379 while (bsp_sysinfo(BSP_INFO_MEMORY, i++, &mem) == 0)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
380 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
381 if (mem.kind == BSP_MEM_RAM)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
382 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
383 totmem += mem.nbytes;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
384 u = (unsigned long)mem.virt_start + mem.nbytes;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
385 if (u > topmem)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
386 topmem = u;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
387 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
388 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
389
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
390 xprintf("CPU: %s\n", platform.cpu);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
391 xprintf("Board: %s\n", platform.board);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
392 if (*(platform.extra))
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
393 xprintf("%s\n", platform.extra);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
394 xprintf("Total RAM: %d bytes\n", totmem);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
395 xprintf("Top of RAM: 0x%x\n", topmem);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
396 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
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diff changeset
397 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
398
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
jlarmour
parents:
diff changeset
399
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST
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400 #ifdef HAVE_BSP
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401 static int
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402 mon_kill_handler(int exc_nr, void *regs)
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403 {
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404 monitor_take_control();
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405 return 1;
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406 }
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407
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408
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409 static int
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410 mon_dbg_handler(int exc_nr, void *regs)
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411 {
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412 int sig;
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413 unsigned long cur_pc;
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414
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415 mon_saved_regs = regs;
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416 sig = bsp_get_signal(exc_nr, regs);
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417
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418 cygmon_handle_exception(sig);
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419
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420 cur_pc = bsp_get_pc(regs);
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421 if (cur_pc == (unsigned long)bsp_breakinsn)
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422 bsp_skip_instruction(regs);
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423
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424 if (!stub_is_active)
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425 install_breakpoints();
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426
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427 return 1;
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428 }
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429 #endif