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Split kernel and user-mode exception handling
svn path=/trunk/; revision=2382
This commit is contained in:
David Welch
parent
b981b14821
commit
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1 changed files with 304 additions and 0 deletions
304
reactos/ntoskrnl/ke/i386/usertrap.c
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304
reactos/ntoskrnl/ke/i386/usertrap.c
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/*
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* ReactOS kernel
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* Copyright (C) 1998, 1999, 2000, 2001 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/ke/i386/usertrap.c
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* PURPOSE: Handling usermode exceptions.
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* PROGRAMMER: David Welch (welch@cwcom.net)
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* REVISION HISTORY:
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* 18/11/01: Split from ntoskrnl/ke/i386/exp.c
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*/
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/* INCLUDES *****************************************************************/
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#include <ddk/ntddk.h>
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#include <roscfg.h>
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#include <internal/ntoskrnl.h>
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#include <internal/ke.h>
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#include <internal/i386/segment.h>
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#include <internal/i386/mm.h>
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#include <internal/module.h>
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#include <internal/mm.h>
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#include <internal/ps.h>
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#include <internal/trap.h>
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#include <ntdll/ldr.h>
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#include <internal/safe.h>
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#define NDEBUG
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#include <internal/debug.h>
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/* GLOBALS *****************************************************************/
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static char *ExceptionTypeStrings[] =
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{
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"Divide Error",
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"Debug Trap",
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"NMI",
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"Breakpoint",
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"Overflow",
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"BOUND range exceeded",
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"Invalid Opcode",
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"No Math Coprocessor",
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"Double Fault",
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"Unknown(9)",
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"Invalid TSS",
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"Segment Not Present",
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"Stack Segment Fault",
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"General Protection",
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"Page Fault",
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"Math Fault",
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"Alignment Check",
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"Machine Check"
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};
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/* FUNCTIONS ****************************************************************/
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STATIC BOOLEAN
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print_user_address(PVOID address)
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{
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#ifdef KDBG
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ULONG Offset;
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PSYMBOL Symbol, NextSymbol;
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BOOLEAN Printed = FALSE;
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ULONG NextAddress;
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#endif /* KDBG */
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PLIST_ENTRY current_entry;
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PLDR_MODULE current;
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PEPROCESS CurrentProcess;
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PPEB Peb = NULL;
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CurrentProcess = PsGetCurrentProcess();
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if (NULL != CurrentProcess)
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{
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Peb = CurrentProcess->Peb;
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}
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if (NULL == Peb)
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{
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DbgPrint("<%x>", address);
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return(TRUE);
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}
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current_entry = Peb->Ldr->InLoadOrderModuleList.Flink;
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while (current_entry != &Peb->Ldr->InLoadOrderModuleList &&
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current_entry != NULL)
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{
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current =
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CONTAINING_RECORD(current_entry, LDR_MODULE, InLoadOrderModuleList);
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if (address >= (PVOID)current->BaseAddress &&
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address < (PVOID)(current->BaseAddress + current->SizeOfImage))
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{
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#ifdef KDBG
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Offset = (ULONG)(address - current->BaseAddress);
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Symbol = current->Symbols.Symbols;
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while (Symbol != NULL)
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{
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NextSymbol = Symbol->Next;
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if (NextSymbol != NULL)
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NextAddress = NextSymbol->RelativeAddress;
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else
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NextAddress = current->SizeOfImage;
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if ((Offset >= Symbol->RelativeAddress) &&
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(Offset < NextAddress))
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{
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DbgPrint("<%wZ: %x (%wZ)>",
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¤t->BaseDllName, Offset, &Symbol->Name);
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Printed = TRUE;
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break;
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}
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Symbol = NextSymbol;
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}
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if (!Printed)
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DbgPrint("<%wZ: %x>", ¤t->BaseDllName, Offset);
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#else /* KDBG */
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DbgPrint("<%wZ: %x>", ¤t->BaseDllName,
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address - current->BaseAddress);
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#endif /* KDBG */
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return(TRUE);
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}
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current_entry = current_entry->Flink;
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}
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return(FALSE);
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}
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#if 0
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/*
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* Disabled until SEH support is implemented.
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*/
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ULONG
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KiUserTrapHandler(PKTRAP_FRAME Tf, ULONG ExceptionNr, PVOID Cr2)
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{
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EXCEPTION_RECORD Er;
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if (ExceptionNr == 0)
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{
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Er.ExceptionCode = STATUS_INTEGER_DIVIDE_BY_ZERO;
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}
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else if (ExceptionNr == 1)
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{
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Er.ExceptionCode = STATUS_SINGLE_STEP;
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}
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else if (ExceptionNr == 3)
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{
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Er.ExceptionCode = STATUS_BREAKPOINT;
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}
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else if (ExceptionNr == 4)
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{
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Er.ExceptionCode = STATUS_INTEGER_OVERFLOW;
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}
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else if (ExceptionNr == 5)
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{
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Er.ExceptionCode = STATUS_ARRAY_BOUNDS_EXCEEDED;
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}
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else if (ExceptionNr == 6)
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{
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Er.ExceptionCode = STATUS_ILLEGAL_INSTRUCTION;
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}
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else
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{
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Er.ExceptionCode = STATUS_ACCESS_VIOLATION;
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}
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Er.ExceptionFlags = 0;
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Er.ExceptionRecord = NULL;
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Er.ExceptionAddress = (PVOID)Tf->Eip;
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if (ExceptionNr == 14)
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{
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Er.NumberParameters = 2;
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Er.ExceptionInformation[0] = Tf->ErrorCode & 0x1;
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Er.ExceptionInformation[1] = (ULONG)Cr2;
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}
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else
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{
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Er.NumberParameters = 0;
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}
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KiDispatchException(&Er, 0, Tf, UserMode, TRUE);
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return(0);
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}
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#else
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ULONG
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KiUserTrapHandler(PKTRAP_FRAME Tf, ULONG ExceptionNr, PVOID Cr2)
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{
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PULONG Frame;
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ULONG cr3;
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ULONG i;
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ULONG ReturnAddress;
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ULONG NextFrame;
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NTSTATUS Status;
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/*
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* Get the PDBR
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*/
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__asm__("movl %%cr3,%0\n\t" : "=d" (cr3));
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/*
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* Print out the CPU registers
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*/
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if (ExceptionNr < 19)
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{
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DbgPrint("%s Exception: %d(%x)\n", ExceptionTypeStrings[ExceptionNr],
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ExceptionNr, Tf->ErrorCode&0xffff);
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}
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else
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{
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DbgPrint("Exception: %d(%x)\n", ExceptionNr, Tf->ErrorCode&0xffff);
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}
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DbgPrint("CS:EIP %x:%x ", Tf->Cs&0xffff, Tf->Eip);
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print_user_address((PVOID)Tf->Eip);
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DbgPrint("\n");
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__asm__("movl %%cr3,%0\n\t" : "=d" (cr3));
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DbgPrint("CR2 %x CR3 %x ", Cr2, cr3);
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DbgPrint("Process: %x ",PsGetCurrentProcess());
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if (PsGetCurrentProcess() != NULL)
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{
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DbgPrint("Pid: %x <", PsGetCurrentProcess()->UniqueProcessId);
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DbgPrint("%.8s> ", PsGetCurrentProcess()->ImageFileName);
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}
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if (PsGetCurrentThread() != NULL)
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{
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DbgPrint("Thrd: %x Tid: %x",
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PsGetCurrentThread(),
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PsGetCurrentThread()->Cid.UniqueThread);
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}
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DbgPrint("\n");
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DbgPrint("DS %x ES %x FS %x GS %x\n", Tf->Ds&0xffff, Tf->Es&0xffff,
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Tf->Fs&0xffff, Tf->Gs&0xfff);
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DbgPrint("EAX: %.8x EBX: %.8x ECX: %.8x\n", Tf->Eax, Tf->Ebx, Tf->Ecx);
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DbgPrint("EDX: %.8x EBP: %.8x ESI: %.8x\n", Tf->Edx, Tf->Ebp, Tf->Esi);
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DbgPrint("EDI: %.8x EFLAGS: %.8x ", Tf->Edi, Tf->Eflags);
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DbgPrint("SS:ESP %x:%x\n", Tf->Ss, Tf->Esp);
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/*
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* Dump the stack frames
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*/
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DbgPrint("Frames: ");
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i = 1;
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Frame = (PULONG)Tf->Ebp;
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while (Frame != NULL && i < 50)
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{
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Status = MmCopyFromCaller(&ReturnAddress, &Frame[1], sizeof(ULONG));
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if (!NT_SUCCESS(Status))
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{
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DbgPrint("????????\n");
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break;
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}
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print_user_address((PVOID)ReturnAddress);
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Status = MmCopyFromCaller(&NextFrame, &Frame[0], sizeof(ULONG));
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if (!NT_SUCCESS(Status))
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{
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DbgPrint("Frame is inaccessible.\n");
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break;
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}
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if ((NextFrame + sizeof(ULONG)) >= KERNEL_BASE)
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{
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DbgPrint("Next frame is in kernel space!\n");
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break;
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}
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if (NextFrame >= (ULONG)Frame)
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{
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DbgPrint("Next frame is not below current frame!\n");
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break;
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}
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Frame = (PULONG)NextFrame;
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i++;
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}
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/*
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* Kill the faulting task
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*/
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__asm__("sti\n\t");
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ZwTerminateProcess(NtCurrentProcess(), STATUS_NONCONTINUABLE_EXCEPTION);
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/*
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* If terminating the process fails then bugcheck
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*/
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KeBugCheck(0);
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return(0);
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}
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#endif
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