reactos/lib/rtl/exception.c

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/* COPYRIGHT: See COPYING in the top level directory
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
* PROJECT: ReactOS Runtime Library
* PURPOSE: User-Mode Exception Support
* FILE: lib/rtl/exception.c
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
* PROGRAMERS: Alex Ionescu (alex@relsoft.net)
* David Welch <welch@cwcom.net>
* Skywing <skywing@valhallalegends.com>
* KJK::Hyperion <noog@libero.it>
*/
/* INCLUDES *****************************************************************/
#include <rtl.h>
#define NDEBUG
#include <debug.h>
/* GLOBALS *****************************************************************/
PRTLP_UNHANDLED_EXCEPTION_FILTER RtlpUnhandledExceptionFilter;
/* FUNCTIONS ***************************************************************/
#if !defined(_M_IX86) && !defined(_M_AMD64)
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
/*
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
* @implemented
*/
VOID
NTAPI
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
RtlRaiseException(IN PEXCEPTION_RECORD ExceptionRecord)
{
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
CONTEXT Context;
NTSTATUS Status;
/* Capture the context */
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
RtlCaptureContext(&Context);
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
/* Save the exception address */
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
ExceptionRecord->ExceptionAddress = _ReturnAddress();
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
/* Write the context flag */
Context.ContextFlags = CONTEXT_FULL;
/* Check if user mode debugger is active */
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
if (RtlpCheckForActiveDebugger())
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
{
/* Raise an exception immediately */
Status = ZwRaiseException(ExceptionRecord, &Context, TRUE);
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
}
else
{
/* Dispatch the exception and check if we should continue */
if (!RtlDispatchException(ExceptionRecord, &Context))
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
{
/* Raise the exception */
Status = ZwRaiseException(ExceptionRecord, &Context, FALSE);
}
else
{
/* Continue, go back to previous context */
Status = ZwContinue(&Context, FALSE);
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
}
}
/* If we returned, raise a status */
RtlRaiseStatus(Status);
}
#endif
#if !defined(_M_IX86)
#ifdef _MSC_VER
#pragma warning(push)
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
#pragma warning(disable:4717) // RtlRaiseStatus is recursive by design
#endif
/*
* @implemented
*/
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
VOID
NTAPI
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
RtlRaiseStatus(IN NTSTATUS Status)
{
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
EXCEPTION_RECORD ExceptionRecord;
CONTEXT Context;
/* Capture the context */
RtlCaptureContext(&Context);
/* Create an exception record */
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
ExceptionRecord.ExceptionAddress = _ReturnAddress();
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
ExceptionRecord.ExceptionCode = Status;
ExceptionRecord.ExceptionRecord = NULL;
ExceptionRecord.NumberParameters = 0;
ExceptionRecord.ExceptionFlags = EXCEPTION_NONCONTINUABLE;
/* Write the context flag */
Context.ContextFlags = CONTEXT_FULL;
/* Check if user mode debugger is active */
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
if (RtlpCheckForActiveDebugger())
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
{
/* Raise an exception immediately */
ZwRaiseException(&ExceptionRecord, &Context, TRUE);
}
else
{
/* Dispatch the exception */
RtlDispatchException(&ExceptionRecord, &Context);
/* Raise exception if we got here */
Status = ZwRaiseException(&ExceptionRecord, &Context, FALSE);
}
/* If we returned, raise a status */
RtlRaiseStatus(Status);
}
#ifdef _MSC_VER
#pragma warning(pop)
#endif
- Replace RtlpGetExceptionAddress by the _ReturnAddress intrinsic and add it to ARM intrin.h as it was missing. - Simplify RtlpCheckForActiveDebugger: Remove the BOOLEAN parameter as we would always pass it FALSE. Always return FALSE false from kernel mode for simplicity. - Fix a critical flaw in our exception support: RtlRaiseException and RtlRaiseStatus were implemented in C on x86. This lead to unpredictable register corruption because the compiler could not know that it had to preserve non-volatile registers before calling RtlCaptureContext as the saved context is later used to restore the caller in case the exception is handled and execution is continued. This made the functions unsafe to return from as any non-volatile register could be corrupted. Implement them in assembly for x86 to safely capture the context using only EBP and ESP. The C versions of those routines are still used and shared for the other architectures we support -- needs to be determined if this is safe and correct for those architectures. - The ntdll exception Wine exposed this issue, and all tests now pass. The remaining failures on the build server are caused by missing or incomplete debug register support in KVM/QEMU. Run the test in another VM or on real hardware and all the tests will pass. - Implement Debug Prompt (DbgPrompt) support for KD and KDBG. The KDBG implementation reads the prompt from keyboard or serial depending on the mode so that sysreg and rosdbg can support it too. - Properly implement RtlAssert using DbgPrompt to prompt for the action to take instead of always doing a breakpoint. The new implementation is disabled until sysreg can support this. Also move RtlAssert to its own file as it has nothing to do with the error routines (nor does it belong in exception.c). - Note that DbgPrompt was already used in PspCatchCriticalBreak, and this would have resulted in a silent hang as BREAKPOINT_PROMPT wasn't handled at all by KDBG. - Implement KiRaiseAssertion (10 lines of code with the trap macros) and thus support NT_ASSERT. Add partial support for it to KDBG to print out a warning and the address of the failure, but don't do anything else. Also add NT_ASSERT to the DDK headers so that we can use it, but don't use it yet as the ARM method of performing this has not been decided nor implemented. - KiTrap3 doesn't set STATUS_SUCCESS but BREAKPOINT_BREAK. They have the same numerical value but very different meaning -- BREAKPOINT_BREAK means that the exception is a software breakpoint and not a debug service call. Fix some comments to document that this is what is checked for. - Fix inverted and broken logic in KdpReport. It would never pass second chance exceptions to the debugger, didn't respect the stop-on-exception flag properly and would always fail to handle some special exceptions in both first and second chance instead of just failing to handle it in first chance. Clean up, reformat and document what is going on. - The DebugPrint and DebugPrompt support routines only perform a 2D interrupt on x86; use more portable comments. - Add Alex to the programmer section of x86's kdsup.c -- he wrote KdpGetStateChange, KdpSetContextState and the code that was previously in KdpRead/WriteControlSpace. - Add my name to the parts of KD where I have made significant work on getting KD/WinDbg support up and running. - KD debugging is now quite functional and stable. Some bugs and stubs remain to be flushed out, but overall KD is now much better and easier to use than KDBG. svn path=/trunk/; revision=43705
2009-10-23 22:51:39 +00:00
#endif
/*
* @implemented
*/
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
USHORT
NTAPI
Major refactoring of the exception handling code + misc fixes: - Fix/add prototypes for RtlCaptureContext, RtlDispatchException and RtlUnwind - Fix EXCEPTION_REGISTRATION_RECORD structure and PEXCEPTION_ROUTINE - Add w32api excpt.h (based on mingw) with PSDK compatibility fixes - Fix seriously broken User-Mode Ldr thunk and APC Callback prototypes - Fix KiUserExceptionDispatcher - Remove useless NTDLL entrypoint - Implement NTDLL Ki* callbacks in ASM - Implement RtlCaptureContext - Fix RtlRaiseException to handle cases when a user-mode debugger is present - Fix RtlRaiseStatus as above, plus set the exception address and capture context - Little cleanup of RTL headers - Implement RtlpGetStackLimits, RtlpGetExceptionList, RtlpSetExceptionList, RtlpGetExceptionAddress in ASM - Fix RtlDispatchException, add cases for exceptions in the DPC stack and validate the validity of the exception frames. Add support for exception logging by the global flag. Use TRAP_FRAME/EXCPETION_FRAME instead of Context. - Fix RtlUnwind logic, support cases where it's called with custom arguments instead of NULL. - Reimplement RtlpCaptureContext to work properly, convert exception handler calling functions to INTEL syntax and fix some bugs (like checking for the right unwind flag, clearing volatile register values, etc. Also use some optimizations to increase speed. - Modify some kernel functions (like KeContextToTrapFrame, KiDispatchException, KiInitializeUserApc, etc.) to support a PKEXCEPTION_FRAME for future PPC compatibility. - Reimplement RtlCaptureUnicodeString/FreeUnicodeString as inlined probe macros and optimize them. - Export ExRaiseStatus/Exception as Rtl* - Reimplement NtContinue to have more platform-independent code, and to protect and validate user-mode context and parameters with SEH. - Implement KiRaiseException, add SEH to all user-mode parameters and when copying data to the user-mode stack. - Fix KiInitializeUserApc to use KeTrapFrameToContext, to save the debug registers, not to deliver APCs during v86 mode, and to protect user-mode stack operations in SEH and probing. Also make it generate the proper stack for the user-mode callback. - Implement KiUnexpectedInterrupt and KiCoprocessorError - Reimplement NtRaiseException in ASM to take advantage of optimizations due to the trap frame being in the stack when called through System call interface. - Fix Ntcontinue to respect AlertThread paramter - Fix some functiosn to return with KiServiceExit2 instead of KiServiceExit when required/needed - Fix KiDispatchException's logic, fix hacks when calling KeUserExceptionDispatcher, use correct context flags,... - Make NTDLL Ki* callbacks have SEH to protect them and return to kernel-mode with notification of any exceptions (the kernel-mode code to handle this isn't written yet though) svn path=/trunk/; revision=17811
2005-09-11 22:32:20 +00:00
RtlCaptureStackBackTrace(IN ULONG FramesToSkip,
IN ULONG FramesToCapture,
OUT PVOID *BackTrace,
OUT PULONG BackTraceHash OPTIONAL)
{
PVOID Frames[2 * 64];
ULONG FrameCount;
ULONG Hash = 0, i;
/* Skip a frame for the caller */
FramesToSkip++;
/* Don't go past the limit */
if ((FramesToCapture + FramesToSkip) >= 128) return 0;
/* Do the back trace */
FrameCount = RtlWalkFrameChain(Frames, FramesToCapture + FramesToSkip, 0);
/* Make sure we're not skipping all of them */
if (FrameCount <= FramesToSkip) return 0;
/* Loop all the frames */
for (i = 0; i < FramesToCapture; i++)
{
/* Don't go past the limit */
if ((FramesToSkip + i) >= FrameCount) break;
/* Save this entry and hash it */
BackTrace[i] = Frames[FramesToSkip + i];
Hash += PtrToUlong(BackTrace[i]);
}
/* Write the hash */
if (BackTraceHash) *BackTraceHash = Hash;
/* Clear the other entries and return count */
RtlFillMemoryUlong(Frames, 128, 0);
return (USHORT)i;
}
/*
* Private helper function to lookup the module name from a given address.
* The address can point to anywhere within the module.
*/
static const char*
_module_name_from_addr(const void* addr, void **module_start_addr,
char* psz, size_t nChars)
{
#if 0
MEMORY_BASIC_INFORMATION mbi;
if (VirtualQuery(addr, &mbi, sizeof(mbi)) != sizeof(mbi) ||
!GetModuleFileNameA((HMODULE) mbi.AllocationBase, psz, nChars))
{
psz[0] = '\0';
*module_start_addr = 0;
}
else
{
*module_start_addr = (void *) mbi.AllocationBase;
}
return psz;
#else
psz[0] = '\0';
*module_start_addr = 0;
return psz;
#endif
}
static VOID
_dump_context(PCONTEXT pc)
{
#ifdef _M_IX86
/*
* Print out the CPU registers
*/
DbgPrint("CS:EIP %x:%x\n", pc->SegCs & 0xffff, pc->Eip);
DbgPrint("DS %x ES %x FS %x GS %x\n", pc->SegDs & 0xffff, pc->SegEs & 0xffff,
pc->SegFs & 0xffff, pc->SegGs & 0xfff);
DbgPrint("EAX: %.8x EBX: %.8x ECX: %.8x\n", pc->Eax, pc->Ebx, pc->Ecx);
DbgPrint("EDX: %.8x EBP: %.8x ESI: %.8x ESP: %.8x\n", pc->Edx,
pc->Ebp, pc->Esi, pc->Esp);
DbgPrint("EDI: %.8x EFLAGS: %.8x\n", pc->Edi, pc->EFlags);
#elif defined(_M_AMD64)
DbgPrint("CS:RIP %x:%I64x\n", pc->SegCs & 0xffff, pc->Rip);
DbgPrint("DS %x ES %x FS %x GS %x\n", pc->SegDs & 0xffff, pc->SegEs & 0xffff,
pc->SegFs & 0xffff, pc->SegGs & 0xfff);
DbgPrint("RAX: %I64x RBX: %I64x RCX: %I64x RDI: %I64x\n", pc->Rax, pc->Rbx, pc->Rcx, pc->Rdi);
DbgPrint("RDX: %I64x RBP: %I64x RSI: %I64x RSP: %I64x\n", pc->Rdx, pc->Rbp, pc->Rsi, pc->Rsp);
DbgPrint("R8: %I64x R9: %I64x R10: %I64x R11: %I64x\n", pc->R8, pc->R9, pc->R10, pc->R11);
DbgPrint("R12: %I64x R13: %I64x R14: %I64x R15: %I64x\n", pc->R12, pc->R13, pc->R14, pc->R15);
DbgPrint("EFLAGS: %.8x\n", pc->EFlags);
#else
#warning Unknown architecture
#endif
}
static VOID
PrintStackTrace(struct _EXCEPTION_POINTERS *ExceptionInfo)
{
PVOID StartAddr;
CHAR szMod[128] = "";
PEXCEPTION_RECORD ExceptionRecord = ExceptionInfo->ExceptionRecord;
PCONTEXT ContextRecord = ExceptionInfo->ContextRecord;
/* Print a stack trace. */
DbgPrint("Unhandled exception\n");
DbgPrint("ExceptionCode: %8x\n", ExceptionRecord->ExceptionCode);
if ((NTSTATUS) ExceptionRecord->ExceptionCode == STATUS_ACCESS_VIOLATION &&
ExceptionRecord->NumberParameters == 2)
{
DbgPrint("Faulting Address: %8x\n", ExceptionRecord->ExceptionInformation[1]);
}
_dump_context(ContextRecord);
_module_name_from_addr(ExceptionRecord->ExceptionAddress, &StartAddr, szMod, sizeof(szMod));
DbgPrint("Address:\n %8x+%-8x %s\n",
(PVOID) StartAddr,
(ULONG_PTR) ExceptionRecord->ExceptionAddress - (ULONG_PTR) StartAddr,
szMod);
#ifdef _M_IX86
DbgPrint("Frames:\n");
_SEH2_TRY
{
UINT i;
PULONG Frame = (PULONG) ContextRecord->Ebp;
for (i = 0; Frame[1] != 0 && Frame[1] != 0xdeadbeef && i < 128; i++)
{
//if (IsBadReadPtr((PVOID) Frame[1], 4))
if (Frame[1] == 0)
{
DbgPrint(" %8x%9s %s\n", Frame[1], "<invalid address>", " ");
}
else
{
_module_name_from_addr((const void*) Frame[1], &StartAddr,
szMod, sizeof(szMod));
DbgPrint(" %8x+%-8x %s\n",
(PVOID) StartAddr,
(ULONG_PTR) Frame[1] - (ULONG_PTR) StartAddr,
szMod);
}
if (Frame[0] == 0) break;
//if (IsBadReadPtr((PVOID) Frame[0], sizeof(*Frame) * 2))
//break;
Frame = (PULONG) Frame[0];
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
DbgPrint("<error dumping stack trace: 0x%x>\n", _SEH2_GetExceptionCode());
}
_SEH2_END;
#endif
}
/*
* @unimplemented
*/
LONG
NTAPI
RtlUnhandledExceptionFilter(IN struct _EXCEPTION_POINTERS* ExceptionInfo)
{
/* This is used by the security cookie checks, and calso called externally */
UNIMPLEMENTED;
PrintStackTrace(ExceptionInfo);
return ERROR_CALL_NOT_IMPLEMENTED;
}
/*
* @implemented
*/
VOID
NTAPI
RtlSetUnhandledExceptionFilter(IN PRTLP_UNHANDLED_EXCEPTION_FILTER TopLevelExceptionFilter)
{
/* Set the filter which is used by the CriticalSection package */
RtlpUnhandledExceptionFilter = RtlEncodePointer(TopLevelExceptionFilter);
}