mirror of
https://github.com/reactos/reactos.git
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380 lines
9.6 KiB
C
380 lines
9.6 KiB
C
/*++
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Copyright (c) 1998-2001 Klaus P. Gerlicher
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Module Name:
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init.c
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Abstract:
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initialisation and cleanup of debugger kernel module
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Environment:
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Kernel mode only
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Author:
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Klaus P. Gerlicher
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Revision History:
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25-Jan-1999: created
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15-Nov-2000: general cleanup of source files
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Copyright notice:
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This file may be distributed under the terms of the GNU Public License.
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--*/
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////////////////////////////////////////////////////
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// INCLUDES
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////
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#include "remods.h"
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#include "precomp.h"
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////////////////////////////////////////////////////
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// GLOBALS
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ULONG ulDoInitialBreak=1;
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char szBootParams[1024]="";
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char tempInit[256];
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PDIRECTORY_OBJECT *pNameSpaceRoot = NULL;
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PDEBUG_MODULE pdebug_module_tail = NULL;
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PDEBUG_MODULE pdebug_module_head = NULL;
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PMADDRESS_SPACE mm_init_mm;
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extern LIST_ENTRY *pModuleListHead;
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ULONG KeyboardIRQL;
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extern void NewInt31Handler(void);
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//*************************************************************************
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// InitPICE()
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//
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//*************************************************************************
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BOOLEAN InitPICE(void)
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{
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ULONG ulHandleScancode=0,ulHandleKbdEvent=0;
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ARGS Args;
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KIRQL Dirql;
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KAFFINITY Affinity;
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ULONG ulAddr;
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ENTER_FUNC();
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DPRINT((0,"InitPICE(): trace step 0.5\n"));
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KeyboardIRQL = HalGetInterruptVector(Internal,
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0,
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0,
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KEYBOARD_IRQ,
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&Dirql,
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&Affinity);
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DPRINT((0,"KeyboardIRQL: %x\n", KeyboardIRQL));
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DPRINT((0,"InitPICE(): trace step 1\n"));
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// enable monochrome passthrough on BX type chipset
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EnablePassThrough();
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DPRINT((0,"InitPICE(): trace step 2\n"));
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// now load all symbol files described in /etc/pice.conf
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if(!LoadSymbolsFromConfig(FALSE))
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{
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DPRINT((0,"InitPICE: LoadSymbolsFromConfig() failed\n"));
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 3\n"));
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// init the output console
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// this might be one of the following depending setup
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// a) monochrome card
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// b) serial terminal (TODO)
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if(!ConsoleInit())
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{
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DPRINT((0,"InitPICE: ConsoleInit() failed\n"));
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UnloadSymbols();
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 4\n"));
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// print the initial screen template
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PrintTemplate();
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/*
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DPRINT((0,"InitPICE(): trace step 5\n"));
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// ask the user if he wants to abort the debugger load
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if(!CheckLoadAbort())
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (abort by user)\n");
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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*/
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DPRINT((0,"InitPICE(): trace step 6\n"));
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// load the file /boot/System.map.
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// !!! It must be consistent with the current kernel at all cost!!!
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if(!LoadExports())
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{
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Print(OUTPUT_WINDOW,"pICE: failed to load exports\n");
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Print(OUTPUT_WINDOW,"press any key to continue...\n");
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while(!GetKeyPolled());
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 7\n"));
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ScanExports("_KernelAddressSpace", &ulAddr);
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my_init_mm = (PMADDRESS_SPACE) ulAddr;
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DPRINT((0,"init_mm %x @ %x\n",&my_init_mm,my_init_mm));
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if(!my_init_mm)
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (initial memory map not found)\n");
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Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
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DbgPrint("pICE: ABORT (initial memory map not found)\n");
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DbgPrint("pICE: press any key to continue...\n");
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while(!GetKeyPolled());
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 7.1\n"));
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ScanExports("_ModuleListHead",&ulAddr);
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pModuleListHead = (LIST_ENTRY*)ulAddr;
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DPRINT((0,"pModuleListHead @ %X\n",pModuleListHead));
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if(!pModuleListHead)
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (pModuleListHead not found)\n");
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Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
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while(!GetKeyPolled());
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 7.2\n"));
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ScanExports("_PsProcessListHead",&ulAddr);
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pPsProcessListHead = (LIST_ENTRY*)ulAddr;
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DPRINT((0,"pPsProcessListHead @ %X\n",pPsProcessListHead));
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if(!pPsProcessListHead)
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (PsProcessListHead not found)\n");
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Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
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while(!GetKeyPolled());
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 8\n"));
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// end of the kernel
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/*
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ScanExports("_end",(PULONG)&kernel_end);
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if(!kernel_end)
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (kernel size is unknown)\n");
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Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
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while(!GetKeyPolled());
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UnloadExports();
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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*/
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DPRINT((0,"InitPICE(): trace step 9\n"));
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// the loaded module list
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ScanExports("_NameSpaceRoot", &ulAddr);
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pNameSpaceRoot = (PDIRECTORY_OBJECT *)ulAddr;
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DPRINT((0,"pNameSpaceRoot @ %X\n",pNameSpaceRoot));
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if(!pNameSpaceRoot)
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (couldn't retreive name space root)\n");
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Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
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while(!GetKeyPolled());
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UnloadExports();
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 10\n"));
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// setup a linked list for use in module parsing routines.
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if(!InitModuleList(&pdebug_module_head, 100))
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (couldn't initialize kernel module list)\n");
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Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
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FreeModuleList( pdebug_module_head );
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while(!GetKeyPolled());
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UnloadExports();
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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pdebug_module_tail = pdebug_module_head;
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DPRINT((0,"InitPICE(): trace step 11\n"));
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// do a sanity check on exports
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if(!SanityCheckExports())
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (exports are conflicting with kernel symbols)\n");
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Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
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while(!GetKeyPolled());
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UnloadExports();
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UnloadSymbols();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 12\n"));
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DPRINT((0,"InitPICE(): trace step 13\n"));
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// patch the keyboard driver
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if(!PatchKeyboardDriver())
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{
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Print(OUTPUT_WINDOW,"pICE: ABORT (couldn't patch keyboard driver)\n");
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Print(OUTPUT_WINDOW,"pICE: press any key to continue...\n");
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while(!GetKeyPolled());
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UnloadSymbols();
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UnloadExports();
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ConsoleShutdown();
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LEAVE_FUNC();
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return FALSE;
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}
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DPRINT((0,"InitPICE(): trace step 14\n"));
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// partial init of shadow registers
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CurrentCS = GLOBAL_CODE_SEGMENT;
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CurrentEIP = (ULONG)RealIsr;
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CurrentDS = CurrentSS = GLOBAL_DATA_SEGMENT;
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__asm__("\n\t \
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mov %%esp,%%eax\n\t \
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mov %%eax,_CurrentESP\n\t \
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":::"eax");
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// display version and symbol information
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Ver(NULL);
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// disable HW breakpoints
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__asm__("\n\t \
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xorl %%eax,%%eax\n\t \
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mov %%eax,%%dr6\n\t \
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mov %%eax,%%dr7\n\t \
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mov %%dr0,%%eax\n\t \
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mov %%dr1,%%eax\n\t \
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mov %%dr2,%%eax\n\t \
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mov %%dr3,%%eax"
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:::"eax"
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);
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DPRINT((0,"InitPICE(): trace step 15\n"));
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TakeIdtSnapshot();
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DPRINT((0,"InitPICE(): trace step 16\n"));
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// install all hooks
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InstallTraceHook();
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InstallGlobalKeyboardHook();
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InstallSyscallHook();
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InstallInt3Hook();
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InstallDblFltHook();
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InstallGPFaultHook();
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InstallIntEHook();
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InstallPrintkHook();
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DPRINT((0,"InitPICE(): trace step 16\n"));
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if(ulDoInitialBreak)
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{
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DPRINT((0,"about to do initial break...\n"));
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// simulate an initial break
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__asm__("\n\t \
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pushfl\n\t \
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pushl %cs\n\t \
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pushl $initialreturnpoint\n\t \
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pushl $" STR(REASON_CTRLF) "\n\t \
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jmp NewInt31Handler\n\t \
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initialreturnpoint:");
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}
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else
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{
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// display register contents
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DisplayRegs();
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// display data window
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Args.Value[0]=CurrentDS;
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Args.Value[1]=CurrentEIP;
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Args.Count=2;
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DisplayMemory(&Args);
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// disassembly from current address
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Args.Value[0]=CurrentCS;
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Args.Value[1]=CurrentEIP;
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Args.Count=2;
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Unassemble(&Args);
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}
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DPRINT((0,"InitPICE(): trace step 17\n"));
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InitPiceRunningTimer();
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LEAVE_FUNC();
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return TRUE;
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}
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//*************************************************************************
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// CleanUpPICE()
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//
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//*************************************************************************
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void CleanUpPICE(void)
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{
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DPRINT((0,"CleanUpPICE(): trace step 1\n"));
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RemovePiceRunningTimer();
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DPRINT((0,"CleanUpPICE(): trace step 2\n"));
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// de-install all hooks
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DeInstallGlobalKeyboardHook();
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DeInstallSyscallHook();
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DeInstallInt3Hook();
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DeInstallPrintkHook();
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DeInstallDblFltHook();
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DeInstallGPFaultHook();
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DeInstallIntEHook();
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DeInstallTraceHook();
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DPRINT((0,"CleanUpPICE(): trace step 3\n"));
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RestoreIdt();
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DPRINT((0,"CleanUpPICE(): trace step 4\n"));
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UnloadExports(); // don't use ScanExports() after this
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UnloadSymbols();
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DPRINT((0,"CleanUpPICE(): trace step 5\n"));
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// restore patch of keyboard driver
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RestoreKeyboardDriver();
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DPRINT((0,"CleanUpPICE(): trace step 6\n"));
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Print(OUTPUT_WINDOW,"pICE: shutting down...\n");
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DPRINT((0,"CleanUpPICE(): trace step 7\n"));
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// cleanup the console
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ConsoleShutdown();
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}
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