rosapps/sysutils/utils/pice/module/init.c

   1 /*++
   2
   3 Copyright (c) 1998-2001 Klaus P. Gerlicher
   4
   5 Module Name:
   6
   7     init.c
   8
   9 Abstract:
  10
  11     initialisation and cleanup of debugger kernel module
  12
  13 Environment:
  14
  15     Kernel mode only
  16
  17 Author:
  18
  19     Klaus P. Gerlicher
  20
  21 Revision History:
  22
  23     25-Jan-1999:        created
  24     15-Nov-2000:    general cleanup of source files
  25
  26 Copyright notice:
  27
  28   This file may be distributed under the terms of the GNU Public License.
  29
  30 --*/
  31
  32 ////////////////////////////////////////////////////
  33 // INCLUDES
  34 ////
  35 #include "remods.h"
  36 #include "precomp.h"
  37
  38 ////////////////////////////////////////////////////
  39 // GLOBALS
  40 ULONG ulDoInitialBreak=1;
  41 char szBootParams[1024]="";
  42 char tempInit[256];
  43
  44 PDIRECTORY_OBJECT *pNameSpaceRoot = NULL;
  45 PDEBUG_MODULE pdebug_module_tail = NULL;
  46 PDEBUG_MODULE pdebug_module_head = NULL;
  47 PMADDRESS_SPACE mm_init_mm;
  48 extern LIST_ENTRY *pModuleListHead;
  49
  50 ULONG KeyboardIRQL;
  51
  52 extern void NewInt31Handler(void);
  53 //*************************************************************************
  54 // InitPICE()
  55 //
  56 //*************************************************************************
  57 BOOLEAN InitPICE(void)
  58 {
  59     ULONG ulHandleScancode=0,ulHandleKbdEvent=0;
  60         ARGS Args;
  61     KIRQL Dirql;
  62     KAFFINITY Affinity;
  63         ULONG ulAddr;
  64
  65     ENTER_FUNC();
  66
  67         DPRINT((0,"InitPICE(): trace step 0.5\n"));
  68     KeyboardIRQL = HalGetInterruptVector(Internal,
  69                                      0,
  70                                      0,
  71                                      KEYBOARD_IRQ,
  72                                      &Dirql,
  73                                      &Affinity);
  74         DPRINT((0,"KeyboardIRQL: %x\n", KeyboardIRQL));
  75
  76     DPRINT((0,"InitPICE(): trace step 1\n"));
  77     // enable monochrome passthrough on BX type chipset
  78     EnablePassThrough();
  79
  80     DPRINT((0,"InitPICE(): trace step 2\n"));
  81     // now load all symbol files described in /etc/pice.conf
  82     if(!LoadSymbolsFromConfig(FALSE))
  83     {
  84         DPRINT((0,"InitPICE: LoadSymbolsFromConfig() failed\n"));
  85         LEAVE_FUNC();
  86         return FALSE;
  87     }
  88
  89     DPRINT((0,"InitPICE(): trace step 3\n"));
  90     // init the output console
  91         // this might be one of the following depending setup
  92         // a) monochrome card
  93         // b) serial terminal (TODO)
  94     if(!ConsoleInit())
  95     {
  96         DPRINT((0,"InitPICE: ConsoleInit() failed\n"));
  97         UnloadSymbols();
  98         LEAVE_FUNC();
  99         return FALSE;
 100     }
 101
 102     DPRINT((0,"InitPICE(): trace step 4\n"));
 103     // print the initial screen template
 104     PrintTemplate();
 105 /*
 106     DPRINT((0,"InitPICE(): trace step 5\n"));
 107         // ask the user if he wants to abort the debugger load
 108     if(!CheckLoadAbort())
 109         {
 110                 Print(OUTPUT_WINDOW,"pICE: ABORT (abort by user)\n");
 111         UnloadSymbols();
 112                 ConsoleShutdown();
 113         LEAVE_FUNC();
 114                 return FALSE;
 115         }
 116 */
 117
 118     DPRINT((0,"InitPICE(): trace step 6\n"));
 119     // load the file /boot/System.map.
 120     // !!! It must be consistent with the current kernel at all cost!!!
 121     if(!LoadExports())
 122     {
 123                 Print(OUTPUT_WINDOW,"pICE: failed to load exports\n");
 124         Print(OUTPUT_WINDOW,"press any key to continue...\n");
 125         while(!GetKeyPolled());
 126         UnloadSymbols();
 127                 ConsoleShutdown();
 128         LEAVE_FUNC();
 129                 return FALSE;
 130     }
 131
 132     DPRINT((0,"InitPICE(): trace step 7\n"));
 133         ScanExports("_KernelAddressSpace", &ulAddr);
 134         my_init_mm = (PMADDRESS_SPACE) ulAddr;
 135         DPRINT((0,"init_mm %x @ %x\n",&my_init_mm,my_init_mm));
 136         if(!my_init_mm)
 137         {
 138                 Print(OUTPUT_WINDOW,"pICE: ABORT (initial memory map not found)\n");
 139                 Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
 140                 DbgPrint("pICE: ABORT (initial memory map not found)\n");
 141                 DbgPrint("pICE: press any key to continue...\n");
 142         while(!GetKeyPolled());
 143         UnloadSymbols();
 144                 ConsoleShutdown();
 145         LEAVE_FUNC();
 146                 return FALSE;
 147         }
 148
 149         DPRINT((0,"InitPICE(): trace step 7.1\n"));
 150         ScanExports("_ModuleListHead",&ulAddr);
 151         pModuleListHead = (LIST_ENTRY*)ulAddr;
 152     DPRINT((0,"pModuleListHead @ %X\n",pModuleListHead));
 153         if(!pModuleListHead)
 154         {
 155                 Print(OUTPUT_WINDOW,"pICE: ABORT (pModuleListHead not found)\n");
 156                 Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
 157         while(!GetKeyPolled());
 158         UnloadSymbols();
 159                 ConsoleShutdown();
 160         LEAVE_FUNC();
 161                 return FALSE;
 162         }
 163
 164         DPRINT((0,"InitPICE(): trace step 7.2\n"));
 165         ScanExports("_PsProcessListHead",&ulAddr);
 166         pPsProcessListHead = (LIST_ENTRY*)ulAddr;
 167     DPRINT((0,"pPsProcessListHead @ %X\n",pPsProcessListHead));
 168         if(!pPsProcessListHead)
 169         {
 170                 Print(OUTPUT_WINDOW,"pICE: ABORT (PsProcessListHead not found)\n");
 171                 Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
 172         while(!GetKeyPolled());
 173         UnloadSymbols();
 174                 ConsoleShutdown();
 175         LEAVE_FUNC();
 176                 return FALSE;
 177         }
 178
 179     DPRINT((0,"InitPICE(): trace step 8\n"));
 180     // end of the kernel
 181         /*
 182         ScanExports("_end",(PULONG)&kernel_end);
 183     if(!kernel_end)
 184         {
 185                 Print(OUTPUT_WINDOW,"pICE: ABORT (kernel size is unknown)\n");
 186                 Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
 187         while(!GetKeyPolled());
 188                 UnloadExports();
 189         UnloadSymbols();
 190                 ConsoleShutdown();
 191         LEAVE_FUNC();
 192                 return FALSE;
 193         }
 194         */
 195
 196     DPRINT((0,"InitPICE(): trace step 9\n"));
 197
 198         // the loaded module list
 199         ScanExports("_NameSpaceRoot", &ulAddr);
 200         pNameSpaceRoot = (PDIRECTORY_OBJECT *)ulAddr;
 201         DPRINT((0,"pNameSpaceRoot @ %X\n",pNameSpaceRoot));
 202     if(!pNameSpaceRoot)
 203         {
 204                 Print(OUTPUT_WINDOW,"pICE: ABORT (couldn't retreive name space root)\n");
 205                 Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
 206         while(!GetKeyPolled());
 207                 UnloadExports();
 208         UnloadSymbols();
 209                 ConsoleShutdown();
 210         LEAVE_FUNC();
 211                 return FALSE;
 212         }
 213
 214     DPRINT((0,"InitPICE(): trace step 10\n"));
 215     // setup a linked list for use in module parsing routines.
 216         if(!InitModuleList(&pdebug_module_head, 100))
 217         {
 218                 Print(OUTPUT_WINDOW,"pICE: ABORT (couldn't initialize kernel module list)\n");
 219                 Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
 220                 FreeModuleList( pdebug_module_head );
 221         while(!GetKeyPolled());
 222                 UnloadExports();
 223         UnloadSymbols();
 224                 ConsoleShutdown();
 225         LEAVE_FUNC();
 226                 return FALSE;
 227         }
 228         pdebug_module_tail = pdebug_module_head;
 229
 230     DPRINT((0,"InitPICE(): trace step 11\n"));
 231     // do a sanity check on exports
 232     if(!SanityCheckExports())
 233     {
 234                 Print(OUTPUT_WINDOW,"pICE: ABORT (exports are conflicting with kernel symbols)\n");
 235                 Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
 236         while(!GetKeyPolled());
 237                 UnloadExports();
 238         UnloadSymbols();
 239                 ConsoleShutdown();
 240         LEAVE_FUNC();
 241                 return FALSE;
 242     }
 243
 244     DPRINT((0,"InitPICE(): trace step 12\n"));
 245
 246
 247     DPRINT((0,"InitPICE(): trace step 13\n"));
 248     // patch the keyboard driver
 249
 250         if(!PatchKeyboardDriver())
 251         {
 252                 Print(OUTPUT_WINDOW,"pICE: ABORT (couldn't patch keyboard driver)\n");
 253                 Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
 254         while(!GetKeyPolled());
 255                 UnloadSymbols();
 256                 UnloadExports();
 257                 ConsoleShutdown();
 258         LEAVE_FUNC();
 259                 return FALSE;
 260         }
 261
 262     DPRINT((0,"InitPICE(): trace step 14\n"));
 263     // partial init of shadow registers
 264     CurrentCS = GLOBAL_CODE_SEGMENT;
 265     CurrentEIP = (ULONG)RealIsr;
 266
 267     CurrentDS = CurrentSS = GLOBAL_DATA_SEGMENT;
 268     __asm__("\n\t \
 269             mov %%esp,%%eax\n\t \
 270             mov %%eax,_CurrentESP\n\t \
 271             ":::"eax");
 272
 273
 274     // display version and symbol information
 275     Ver(NULL);
 276
 277     // disable HW breakpoints
 278         __asm__("\n\t \
 279                 xorl %%eax,%%eax\n\t \
 280                 mov %%eax,%%dr6\n\t \
 281                 mov %%eax,%%dr7\n\t \
 282         mov %%dr0,%%eax\n\t \
 283         mov %%dr1,%%eax\n\t \
 284         mov %%dr2,%%eax\n\t \
 285         mov %%dr3,%%eax"
 286                 :::"eax"
 287                 );
 288
 289     DPRINT((0,"InitPICE(): trace step 15\n"));
 290     TakeIdtSnapshot();
 291
 292     DPRINT((0,"InitPICE(): trace step 16\n"));
 293     // install all hooks
 294     InstallTraceHook();
 295     InstallGlobalKeyboardHook();
 296     InstallSyscallHook();
 297     InstallInt3Hook();
 298     InstallDblFltHook();
 299     InstallGPFaultHook();
 300     InstallIntEHook();
 301     InstallPrintkHook();
 302
 303     DPRINT((0,"InitPICE(): trace step 16\n"));
 304     if(ulDoInitialBreak)
 305     {
 306         DPRINT((0,"about to do initial break...\n"));
 307
 308         // simulate an initial break
 309         __asm__("\n\t \
 310             pushfl\n\t \
 311             pushl %cs\n\t \
 312             pushl $initialreturnpoint\n\t \
 313             pushl $" STR(REASON_CTRLF) "\n\t \
 314             jmp NewInt31Handler\n\t \
 315 initialreturnpoint:");
 316     }
 317     else
 318     {
 319         // display register contents
 320         DisplayRegs();
 321
 322         // display data window
 323         Args.Value[0]=CurrentDS;
 324         Args.Value[1]=CurrentEIP;
 325         Args.Count=2;
 326         DisplayMemory(&Args);
 327
 328         // disassembly from current address
 329         Args.Value[0]=CurrentCS;
 330         Args.Value[1]=CurrentEIP;
 331         Args.Count=2;
 332         Unassemble(&Args);
 333     }
 334
 335     DPRINT((0,"InitPICE(): trace step 17\n"));
 336         InitPiceRunningTimer();
 337
 338     LEAVE_FUNC();
 339     return TRUE;
 340 }
 341
 342 //*************************************************************************
 343 // CleanUpPICE()
 344 //
 345 //*************************************************************************
 346 void CleanUpPICE(void)
 347 {
 348     DPRINT((0,"CleanUpPICE(): trace step 1\n"));
 349         RemovePiceRunningTimer();
 350
 351     DPRINT((0,"CleanUpPICE(): trace step 2\n"));
 352     // de-install all hooks
 353     DeInstallGlobalKeyboardHook();
 354     DeInstallSyscallHook();
 355     DeInstallInt3Hook();
 356     DeInstallPrintkHook();
 357     DeInstallDblFltHook();
 358     DeInstallGPFaultHook();
 359     DeInstallIntEHook();
 360     DeInstallTraceHook();
 361
 362     DPRINT((0,"CleanUpPICE(): trace step 3\n"));
 363     RestoreIdt();
 364
 365     DPRINT((0,"CleanUpPICE(): trace step 4\n"));
 366     UnloadExports(); // don't use ScanExports() after this
 367     UnloadSymbols();
 368
 369     DPRINT((0,"CleanUpPICE(): trace step 5\n"));
 370     // restore patch of keyboard driver
 371     RestoreKeyboardDriver();
 372
 373     DPRINT((0,"CleanUpPICE(): trace step 6\n"));
 374     Print(OUTPUT_WINDOW,"pICE: shutting down...\n");
 375
 376     DPRINT((0,"CleanUpPICE(): trace step 7\n"));
 377     // cleanup the console
 378         ConsoleShutdown();
 379 }