reactos/ntoskrnl/rtl/libsupp.c

784 lines
19 KiB
C
Raw Normal View History

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
/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/rtl/libsupp.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
* PURPOSE: RTL Support Routines
* PROGRAMMERS: Alex Ionescu (alex@relsoft.net)
* Gunnar Dalsnes
*/
/* INCLUDES ******************************************************************/
#include <ntoskrnl.h>
#define NDEBUG
#include <debug.h>
#define TAG_ATMT 'TotA' /* Atom table */
#define TAG_RTHL 'LHtR' /* Heap Lock */
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
extern ULONG NtGlobalFlag;
typedef struct _RTL_RANGE_ENTRY
{
LIST_ENTRY Entry;
RTL_RANGE Range;
} RTL_RANGE_ENTRY, *PRTL_RANGE_ENTRY;
PAGED_LOOKASIDE_LIST RtlpRangeListEntryLookasideList;
SIZE_T RtlpAllocDeallocQueryBufferSize = 128;
/* FUNCTIONS *****************************************************************/
PVOID
NTAPI
RtlPcToFileHeader(
IN PVOID PcValue,
OUT PVOID *BaseOfImage)
{
PLDR_DATA_TABLE_ENTRY LdrEntry;
BOOLEAN InSystem;
/* Get the base for this file */
if ((ULONG_PTR)PcValue > (ULONG_PTR)MmHighestUserAddress)
{
/* We are in kernel */
*BaseOfImage = KiPcToFileHeader(PcValue, &LdrEntry, FALSE, &InSystem);
}
else
{
/* We are in user land */
*BaseOfImage = KiRosPcToUserFileHeader(PcValue, &LdrEntry);
}
return *BaseOfImage;
}
VOID
NTAPI
RtlInitializeRangeListPackage(VOID)
{
/* Setup the lookaside list for allocations (not used yet) */
ExInitializePagedLookasideList(&RtlpRangeListEntryLookasideList,
NULL,
NULL,
POOL_COLD_ALLOCATION,
sizeof(RTL_RANGE_ENTRY),
'elRR',
16);
}
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
BOOLEAN
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
RtlpCheckForActiveDebugger(VOID)
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
{
/* This check is meaningless in kernel-mode */
- 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
return FALSE;
}
BOOLEAN
NTAPI
- Fix support for /CRASHDEBUG and /NODEBUG; we didn't respect those settings properly and would initialize KD at boot even if they were set. - Re-enable the breakpoint in vDbgPrintExWithPrefixInternal() as this works properly now. Without this breakpoint some break-in requests got lost if the break-in occurred when handling a debug print (happened a lot at boot). - Implement Command String support for DbgCommandString() -- we now handle every debug service call. - Implement NtSetDebugFilterState() and NtQueryDebugFilterState() for KD, meaning we now support debug filters properly. - Implement KdRefreshDebuggerNotPresent(), KdChangeOption() and KdPowerTransition(). Stub KdSystemDebugControl() to return error status instead of hanging the system. - Stub the rest of the KD API to print a warning and return a failure packet instead of hanging. - Set and respect KdpContextSent when getting and setting the thread context -- WinDbg doesn't seem to rely on this, but better safe than sorry. - Support MP when getting and setting the thread context too -- if the context is operation is for another processor than the current, just get it through the KiProcessorBlock array. - Initialize the MajorVersion in the KD version block more properly -- the high byte is the major identifier (0 for NT). Add the required DBGKD_MAJOR_TYPES enumeration to wdbgexts.h. - Simplify setting and clearing the InDbgPrint flag in the TEB to minimize the impact on kernel execution; use 2 dedicated routines instead of a generic one. - KdpSymbol doesn't return anything, so don't return an ignore status from KdpReportLoadSymbolsStateChange. - Expose the KdpDefaultRetries and Kd_WIN2000_Mask variables to the registry and add them to KDBG too (unused there). - No reason to implement KdpSysGetVersion per architecture; move it back to the generic code. - Add some ARM offsets to the debugger data block that (N/A on other architectures). - Fix the default size of the DbgPrint log buffer for free builds to save some space. It should be 4 KB for a free build and 32 KB for a checked build. - Move KeDisableInterrupts to cpu.c as it fits here more than in the IRQ support code in irqobj.c. - Use KeDisableInterrupts in KeFreezeExecution instead of checking the x86 EFLAG directly. svn path=/trunk/; revision=43912
2009-11-02 17:45:51 +00:00
RtlpSetInDbgPrint(VOID)
{
- Fix support for /CRASHDEBUG and /NODEBUG; we didn't respect those settings properly and would initialize KD at boot even if they were set. - Re-enable the breakpoint in vDbgPrintExWithPrefixInternal() as this works properly now. Without this breakpoint some break-in requests got lost if the break-in occurred when handling a debug print (happened a lot at boot). - Implement Command String support for DbgCommandString() -- we now handle every debug service call. - Implement NtSetDebugFilterState() and NtQueryDebugFilterState() for KD, meaning we now support debug filters properly. - Implement KdRefreshDebuggerNotPresent(), KdChangeOption() and KdPowerTransition(). Stub KdSystemDebugControl() to return error status instead of hanging the system. - Stub the rest of the KD API to print a warning and return a failure packet instead of hanging. - Set and respect KdpContextSent when getting and setting the thread context -- WinDbg doesn't seem to rely on this, but better safe than sorry. - Support MP when getting and setting the thread context too -- if the context is operation is for another processor than the current, just get it through the KiProcessorBlock array. - Initialize the MajorVersion in the KD version block more properly -- the high byte is the major identifier (0 for NT). Add the required DBGKD_MAJOR_TYPES enumeration to wdbgexts.h. - Simplify setting and clearing the InDbgPrint flag in the TEB to minimize the impact on kernel execution; use 2 dedicated routines instead of a generic one. - KdpSymbol doesn't return anything, so don't return an ignore status from KdpReportLoadSymbolsStateChange. - Expose the KdpDefaultRetries and Kd_WIN2000_Mask variables to the registry and add them to KDBG too (unused there). - No reason to implement KdpSysGetVersion per architecture; move it back to the generic code. - Add some ARM offsets to the debugger data block that (N/A on other architectures). - Fix the default size of the DbgPrint log buffer for free builds to save some space. It should be 4 KB for a free build and 32 KB for a checked build. - Move KeDisableInterrupts to cpu.c as it fits here more than in the IRQ support code in irqobj.c. - Use KeDisableInterrupts in KeFreezeExecution instead of checking the x86 EFLAG directly. svn path=/trunk/; revision=43912
2009-11-02 17:45:51 +00:00
/* Nothing to set in kernel mode */
return 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
}
- Fix support for /CRASHDEBUG and /NODEBUG; we didn't respect those settings properly and would initialize KD at boot even if they were set. - Re-enable the breakpoint in vDbgPrintExWithPrefixInternal() as this works properly now. Without this breakpoint some break-in requests got lost if the break-in occurred when handling a debug print (happened a lot at boot). - Implement Command String support for DbgCommandString() -- we now handle every debug service call. - Implement NtSetDebugFilterState() and NtQueryDebugFilterState() for KD, meaning we now support debug filters properly. - Implement KdRefreshDebuggerNotPresent(), KdChangeOption() and KdPowerTransition(). Stub KdSystemDebugControl() to return error status instead of hanging the system. - Stub the rest of the KD API to print a warning and return a failure packet instead of hanging. - Set and respect KdpContextSent when getting and setting the thread context -- WinDbg doesn't seem to rely on this, but better safe than sorry. - Support MP when getting and setting the thread context too -- if the context is operation is for another processor than the current, just get it through the KiProcessorBlock array. - Initialize the MajorVersion in the KD version block more properly -- the high byte is the major identifier (0 for NT). Add the required DBGKD_MAJOR_TYPES enumeration to wdbgexts.h. - Simplify setting and clearing the InDbgPrint flag in the TEB to minimize the impact on kernel execution; use 2 dedicated routines instead of a generic one. - KdpSymbol doesn't return anything, so don't return an ignore status from KdpReportLoadSymbolsStateChange. - Expose the KdpDefaultRetries and Kd_WIN2000_Mask variables to the registry and add them to KDBG too (unused there). - No reason to implement KdpSysGetVersion per architecture; move it back to the generic code. - Add some ARM offsets to the debugger data block that (N/A on other architectures). - Fix the default size of the DbgPrint log buffer for free builds to save some space. It should be 4 KB for a free build and 32 KB for a checked build. - Move KeDisableInterrupts to cpu.c as it fits here more than in the IRQ support code in irqobj.c. - Use KeDisableInterrupts in KeFreezeExecution instead of checking the x86 EFLAG directly. svn path=/trunk/; revision=43912
2009-11-02 17:45:51 +00:00
VOID
NTAPI
RtlpClearInDbgPrint(VOID)
{
/* Nothing to clear in kernel mode */
}
KPROCESSOR_MODE
NTAPI
RtlpGetMode(VOID)
{
return KernelMode;
}
PVOID
NTAPI
RtlpAllocateMemory(ULONG Bytes,
ULONG Tag)
{
return ExAllocatePoolWithTag(PagedPool,
(SIZE_T)Bytes,
Tag);
}
#define TAG_USTR 'RTSU'
#define TAG_ASTR 'RTSA'
#define TAG_OSTR 'RTSO'
VOID
NTAPI
RtlpFreeMemory(PVOID Mem,
ULONG Tag)
{
if (Tag == TAG_ASTR || Tag == TAG_OSTR || Tag == TAG_USTR)
ExFreePool(Mem);
else
ExFreePoolWithTag(Mem, Tag);
}
/*
* @implemented
*/
VOID NTAPI
RtlAcquirePebLock(VOID)
{
}
/*
* @implemented
*/
VOID NTAPI
RtlReleasePebLock(VOID)
{
}
NTSTATUS
NTAPI
LdrShutdownThread(VOID)
{
return STATUS_SUCCESS;
}
PPEB
NTAPI
RtlGetCurrentPeb(VOID)
{
return ((PEPROCESS)(KeGetCurrentThread()->ApcState.Process))->Peb;
}
NTSTATUS
NTAPI
RtlDeleteHeapLock(IN OUT PHEAP_LOCK Lock)
{
ExDeleteResourceLite(&Lock->Resource);
ExFreePoolWithTag(Lock, TAG_RTHL);
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
RtlEnterHeapLock(IN OUT PHEAP_LOCK Lock, IN BOOLEAN Exclusive)
{
KeEnterCriticalRegion();
if (Exclusive)
ExAcquireResourceExclusiveLite(&Lock->Resource, TRUE);
else
ExAcquireResourceSharedLite(&Lock->Resource, TRUE);
return STATUS_SUCCESS;
}
BOOLEAN
NTAPI
RtlTryEnterHeapLock(IN OUT PHEAP_LOCK Lock, IN BOOLEAN Exclusive)
{
BOOLEAN Success;
KeEnterCriticalRegion();
if (Exclusive)
Success = ExAcquireResourceExclusiveLite(&Lock->Resource, FALSE);
else
Success = ExAcquireResourceSharedLite(&Lock->Resource, FALSE);
if (!Success)
KeLeaveCriticalRegion();
return Success;
}
NTSTATUS
NTAPI
RtlInitializeHeapLock(IN OUT PHEAP_LOCK *Lock)
{
PHEAP_LOCK HeapLock = ExAllocatePoolWithTag(NonPagedPool,
sizeof(HEAP_LOCK),
TAG_RTHL);
if (HeapLock == NULL)
return STATUS_NO_MEMORY;
ExInitializeResourceLite(&HeapLock->Resource);
*Lock = HeapLock;
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
RtlLeaveHeapLock(IN OUT PHEAP_LOCK Lock)
{
ExReleaseResourceLite(&Lock->Resource);
KeLeaveCriticalRegion();
return STATUS_SUCCESS;
}
struct _HEAP;
VOID
NTAPI
RtlpAddHeapToProcessList(struct _HEAP *Heap)
{
UNREFERENCED_PARAMETER(Heap);
}
VOID
NTAPI
RtlpRemoveHeapFromProcessList(struct _HEAP *Heap)
{
UNREFERENCED_PARAMETER(Heap);
}
VOID
RtlInitializeHeapManager(VOID)
{
}
#if DBG
VOID FASTCALL
CHECK_PAGED_CODE_RTL(char *file, int line)
{
if(KeGetCurrentIrql() > APC_LEVEL)
{
DbgPrint("%s:%i: Pagable code called at IRQL > APC_LEVEL (%u)\n", file, line, KeGetCurrentIrql());
ASSERT(FALSE);
}
}
#endif
VOID
NTAPI
RtlpSetHeapParameters(IN PRTL_HEAP_PARAMETERS Parameters)
{
/* Apply defaults for non-set parameters */
if (!Parameters->SegmentCommit) Parameters->SegmentCommit = MmHeapSegmentCommit;
if (!Parameters->SegmentReserve) Parameters->SegmentReserve = MmHeapSegmentReserve;
if (!Parameters->DeCommitFreeBlockThreshold) Parameters->DeCommitFreeBlockThreshold = MmHeapDeCommitFreeBlockThreshold;
if (!Parameters->DeCommitTotalFreeThreshold) Parameters->DeCommitTotalFreeThreshold = MmHeapDeCommitTotalFreeThreshold;
}
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
RtlpCheckLogException(IN PEXCEPTION_RECORD ExceptionRecord,
IN PCONTEXT ContextRecord,
IN PVOID ContextData,
IN ULONG Size)
{
/* Check the global flag */
if (NtGlobalFlag & FLG_ENABLE_EXCEPTION_LOGGING)
{
/* FIXME: Log this exception */
}
}
BOOLEAN
NTAPI
RtlpHandleDpcStackException(IN PEXCEPTION_REGISTRATION_RECORD RegistrationFrame,
IN ULONG_PTR RegistrationFrameEnd,
IN OUT PULONG_PTR StackLow,
IN OUT PULONG_PTR StackHigh)
{
PKPRCB Prcb;
ULONG_PTR DpcStack;
/* Check if we are at DISPATCH or higher */
if (KeGetCurrentIrql() >= DISPATCH_LEVEL)
{
/* Get the PRCB and DPC Stack */
Prcb = KeGetCurrentPrcb();
DpcStack = (ULONG_PTR)Prcb->DpcStack;
/* Check if we are in a DPC and the stack matches */
if ((Prcb->DpcRoutineActive) &&
(RegistrationFrameEnd <= DpcStack) &&
((ULONG_PTR)RegistrationFrame >= DpcStack - KERNEL_STACK_SIZE))
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
{
/* Update the limits to the DPC Stack's */
*StackHigh = DpcStack;
*StackLow = DpcStack - KERNEL_STACK_SIZE;
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
return TRUE;
}
}
/* Not in DPC stack */
return FALSE;
}
#if !defined(_ARM_) && !defined(_AMD64_)
BOOLEAN
NTAPI
RtlpCaptureStackLimits(IN ULONG_PTR Ebp,
IN ULONG_PTR *StackBegin,
IN ULONG_PTR *StackEnd)
{
PKTHREAD Thread = KeGetCurrentThread();
/* Don't even try at ISR level or later */
if (KeGetCurrentIrql() > DISPATCH_LEVEL) return FALSE;
/* Start with defaults */
*StackBegin = Thread->StackLimit;
*StackEnd = (ULONG_PTR)Thread->StackBase;
/* Check if EBP is inside the stack */
if ((*StackBegin <= Ebp) && (Ebp <= *StackEnd))
{
/* Then make the stack start at EBP */
*StackBegin = Ebp;
}
else
{
/* Now we're going to assume we're on the DPC stack */
*StackEnd = (ULONG_PTR)(KeGetPcr()->Prcb->DpcStack);
*StackBegin = *StackEnd - KERNEL_STACK_SIZE;
/* Check if we seem to be on the DPC stack */
if ((*StackEnd) && (*StackBegin < Ebp) && (Ebp <= *StackEnd))
{
/* We're on the DPC stack */
*StackBegin = Ebp;
}
else
{
/* We're somewhere else entirely... use EBP for safety */
*StackBegin = Ebp;
*StackEnd = (ULONG_PTR)PAGE_ALIGN(*StackBegin);
}
}
/* Return success */
return TRUE;
}
/*
* @implemented
*/
ULONG
NTAPI
RtlWalkFrameChain(OUT PVOID *Callers,
IN ULONG Count,
IN ULONG Flags)
{
ULONG_PTR Stack, NewStack, StackBegin, StackEnd = 0;
ULONG Eip;
BOOLEAN Result, StopSearch = FALSE;
ULONG i = 0;
PETHREAD Thread = PsGetCurrentThread();
PTEB Teb;
PKTRAP_FRAME TrapFrame;
/* Get current EBP */
#if defined(_M_IX86)
#if defined __GNUC__
__asm__("mov %%ebp, %0" : "=r" (Stack) : );
#elif defined(_MSC_VER)
__asm mov Stack, ebp
#endif
#elif defined(_M_MIPS)
__asm__("move $sp, %0" : "=r" (Stack) : );
#elif defined(_M_PPC)
__asm__("mr %0,1" : "=r" (Stack) : );
#elif defined(_M_ARM)
__asm__("mov sp, %0" : "=r"(Stack) : );
#else
#error Unknown architecture
#endif
/* Set it as the stack begin limit as well */
StackBegin = (ULONG_PTR)Stack;
/* Check if we're called for non-logging mode */
if (!Flags)
{
/* Get the actual safe limits */
Result = RtlpCaptureStackLimits((ULONG_PTR)Stack,
&StackBegin,
&StackEnd);
if (!Result) return 0;
}
/* Use a SEH block for maximum protection */
_SEH2_TRY
{
/* Check if we want the user-mode stack frame */
if (Flags == 1)
{
/* Get the trap frame and TEB */
TrapFrame = KeGetTrapFrame(&Thread->Tcb);
Teb = Thread->Tcb.Teb;
/* Make sure we can trust the TEB and trap frame */
if (!(Teb) ||
(KeIsAttachedProcess()) ||
(KeGetCurrentIrql() >= DISPATCH_LEVEL))
{
/* Invalid or unsafe attempt to get the stack */
_SEH2_YIELD(return 0;)
}
/* Get the stack limits */
StackBegin = (ULONG_PTR)Teb->NtTib.StackLimit;
StackEnd = (ULONG_PTR)Teb->NtTib.StackBase;
#ifdef _M_IX86
Stack = TrapFrame->Ebp;
#elif defined(_M_PPC)
Stack = TrapFrame->Gpr1;
Mega KD64 revival patch: KD64 - Fix some 64-bit issues and some x86 specificness. - Sub out some KdpTrap cases more properly. - Implement support for .crash and .reboot. Does not seem to work currently because of weird issues. - Implement KdpDprintf to send strings directly to the debugger from inside of KD64. Use it in KdEnterDebugger instead of DbgPrint so we won't try to enter the debugger recursively. - Implement KdUpdateDataBlock to set the KeUserCallbackDispatcher pointer in the debugger block after its address is retrieved from ntdll. - Don't assume breakpoints are 1 byte long in portable code -- use KD_BREAKPOINT_SIZE and define it per architecture. - KdpStub: KdEnableDebugger returns NTSTATUS, not TRUE/FALSE. Other - wdbgexts.h: Properly define CURRENT_KD_SECONDARY_VERSION for AMD64. - Make PsNtosImageBase pointer-sized as it should be. - Change the definition of KDSTATUS so it is guaranteed to be 32-bit. - Fix a critical bug in KiRestoreProcessorControlState: it didn't clear the busy flag in the TSS before reloading the task register, resulting in a GPF if we tried to reload the same register. - Add macros for getting and setting special purpose registers (the Program Counter and the "return register") in portable code instead of using #ifdef every time. Do likewise for setting IMAGE_FILE_MACHINE_XXX, using a new IMAGE_FILE_MACHINE_ARCHITECTURE macro. - Don't refer to the Program Counter as "Eip" in portable code. - Define DBG_STATUS_CONTROL_C for assembly code and use it in KeUpdateSystemTime. svn path=/trunk/; revision=43283
2009-10-04 16:53:15 +00:00
#else
#error Unknown architecture
#endif
/* Validate them */
if (StackEnd <= StackBegin) _SEH2_YIELD(return 0);
ProbeForRead((PVOID)StackBegin,
StackEnd - StackBegin,
sizeof(CHAR));
}
/* Loop the frames */
for (i = 0; i < Count; i++)
{
/*
* Leave if we're past the stack,
* if we're before the stack,
* or if we've reached ourselves.
*/
if ((Stack >= StackEnd) ||
(!i ? (Stack < StackBegin) : (Stack <= StackBegin)) ||
((StackEnd - Stack) < (2 * sizeof(ULONG_PTR))))
{
/* We're done or hit a bad address */
break;
}
/* Get new stack and EIP */
NewStack = *(PULONG_PTR)Stack;
Eip = *(PULONG_PTR)(Stack + sizeof(ULONG_PTR));
/* Check if the new pointer is above the oldone and past the end */
if (!((Stack < NewStack) && (NewStack < StackEnd)))
{
/* Stop searching after this entry */
StopSearch = TRUE;
}
/* Also make sure that the EIP isn't a stack address */
if ((StackBegin < Eip) && (Eip < StackEnd)) break;
/* Check if we reached a user-mode address */
if (!(Flags) && !(Eip & 0x80000000)) break; // FIXME: 3GB breakage
/* Save this frame */
Callers[i] = (PVOID)Eip;
/* Check if we should continue */
if (StopSearch)
{
/* Return the next index */
i++;
break;
}
/* Move to the next stack */
Stack = NewStack;
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
/* No index */
i = 0;
}
_SEH2_END;
/* Return frames parsed */
return i;
}
#endif
#if defined(_M_AMD64) || defined(_M_ARM)
VOID
NTAPI
RtlpGetStackLimits(
OUT PULONG_PTR LowLimit,
OUT PULONG_PTR HighLimit)
{
PKTHREAD CurrentThread = KeGetCurrentThread();
*HighLimit = (ULONG_PTR)CurrentThread->InitialStack;
*LowLimit = (ULONG_PTR)CurrentThread->StackLimit;
}
#endif
/* RTL Atom Tables ************************************************************/
NTSTATUS
RtlpInitAtomTableLock(PRTL_ATOM_TABLE AtomTable)
{
ExInitializeFastMutex(&AtomTable->FastMutex);
return STATUS_SUCCESS;
}
VOID
RtlpDestroyAtomTableLock(PRTL_ATOM_TABLE AtomTable)
{
}
BOOLEAN
RtlpLockAtomTable(PRTL_ATOM_TABLE AtomTable)
{
ExAcquireFastMutex(&AtomTable->FastMutex);
return TRUE;
}
VOID
RtlpUnlockAtomTable(PRTL_ATOM_TABLE AtomTable)
{
ExReleaseFastMutex(&AtomTable->FastMutex);
}
BOOLEAN
RtlpCreateAtomHandleTable(PRTL_ATOM_TABLE AtomTable)
{
AtomTable->ExHandleTable = ExCreateHandleTable(NULL);
return (AtomTable->ExHandleTable != NULL);
}
BOOLEAN
NTAPI
RtlpCloseHandleCallback(
IN PHANDLE_TABLE_ENTRY HandleTableEntry,
IN HANDLE Handle,
IN PVOID HandleTable)
{
/* Destroy and unlock the handle entry */
return ExDestroyHandle(HandleTable, Handle, HandleTableEntry);
}
VOID
RtlpDestroyAtomHandleTable(PRTL_ATOM_TABLE AtomTable)
{
if (AtomTable->ExHandleTable)
{
ExSweepHandleTable(AtomTable->ExHandleTable,
RtlpCloseHandleCallback,
AtomTable->ExHandleTable);
ExDestroyHandleTable(AtomTable->ExHandleTable, NULL);
AtomTable->ExHandleTable = NULL;
}
}
PRTL_ATOM_TABLE
RtlpAllocAtomTable(ULONG Size)
{
PRTL_ATOM_TABLE Table = ExAllocatePoolWithTag(NonPagedPool,
Size,
TAG_ATMT);
if (Table != NULL)
{
RtlZeroMemory(Table,
Size);
}
return Table;
}
VOID
RtlpFreeAtomTable(PRTL_ATOM_TABLE AtomTable)
{
ExFreePoolWithTag(AtomTable, TAG_ATMT);
}
PRTL_ATOM_TABLE_ENTRY
RtlpAllocAtomTableEntry(ULONG Size)
{
PRTL_ATOM_TABLE_ENTRY Entry;
Entry = ExAllocatePoolWithTag(NonPagedPool, Size, TAG_ATMT);
if (Entry != NULL)
{
RtlZeroMemory(Entry, Size);
}
return Entry;
}
VOID
RtlpFreeAtomTableEntry(PRTL_ATOM_TABLE_ENTRY Entry)
{
ExFreePoolWithTag(Entry, TAG_ATMT);
}
VOID
RtlpFreeAtomHandle(PRTL_ATOM_TABLE AtomTable, PRTL_ATOM_TABLE_ENTRY Entry)
{
ExDestroyHandle(AtomTable->ExHandleTable,
(HANDLE)((ULONG_PTR)Entry->HandleIndex << 2),
NULL);
}
BOOLEAN
RtlpCreateAtomHandle(PRTL_ATOM_TABLE AtomTable, PRTL_ATOM_TABLE_ENTRY Entry)
{
HANDLE_TABLE_ENTRY ExEntry;
HANDLE Handle;
USHORT HandleIndex;
/* Initialize ex handle table entry */
ExEntry.Object = Entry;
ExEntry.GrantedAccess = 0x1; /* FIXME - valid handle */
/* Create ex handle */
Handle = ExCreateHandle(AtomTable->ExHandleTable,
&ExEntry);
if (!Handle) return FALSE;
/* Calculate HandleIndex (by getting rid of the first two bits) */
HandleIndex = (USHORT)((ULONG_PTR)Handle >> 2);
/* Index must be less than 0xC000 */
if (HandleIndex >= 0xC000)
{
/* Destroy ex handle */
ExDestroyHandle(AtomTable->ExHandleTable,
Handle,
NULL);
/* Return failure */
return FALSE;
}
/* Initialize atom table entry */
Entry->HandleIndex = HandleIndex;
Entry->Atom = 0xC000 + HandleIndex;
/* Return success */
return TRUE;
}
PRTL_ATOM_TABLE_ENTRY
RtlpGetAtomEntry(PRTL_ATOM_TABLE AtomTable, ULONG Index)
{
PHANDLE_TABLE_ENTRY ExEntry;
PRTL_ATOM_TABLE_ENTRY Entry = NULL;
/* NOTE: There's no need to explicitly enter a critical region because it's
guaranteed that we're in a critical region right now (as we hold
the atom table lock) */
ExEntry = ExMapHandleToPointer(AtomTable->ExHandleTable,
(HANDLE)((ULONG_PTR)Index << 2));
if (ExEntry != NULL)
{
Entry = ExEntry->Object;
ExUnlockHandleTableEntry(AtomTable->ExHandleTable,
ExEntry);
}
return Entry;
}
/*
* Ldr Resource support code
*/
IMAGE_RESOURCE_DIRECTORY *find_entry_by_name( IMAGE_RESOURCE_DIRECTORY *dir,
LPCWSTR name, void *root,
int want_dir );
IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( IMAGE_RESOURCE_DIRECTORY *dir,
USHORT id, void *root, int want_dir );
IMAGE_RESOURCE_DIRECTORY *find_first_entry( IMAGE_RESOURCE_DIRECTORY *dir,
void *root, int want_dir );
/**********************************************************************
* find_entry
*
* Find a resource entry
*/
NTSTATUS find_entry( PVOID BaseAddress, LDR_RESOURCE_INFO *info,
ULONG level, void **ret, int want_dir )
{
ULONG size;
void *root;
IMAGE_RESOURCE_DIRECTORY *resdirptr;
root = RtlImageDirectoryEntryToData( BaseAddress, TRUE, IMAGE_DIRECTORY_ENTRY_RESOURCE, &size );
if (!root) return STATUS_RESOURCE_DATA_NOT_FOUND;
if (size < sizeof(*resdirptr)) return STATUS_RESOURCE_DATA_NOT_FOUND;
resdirptr = root;
if (!level--) goto done;
if (!(*ret = find_entry_by_name( resdirptr, (LPCWSTR)info->Type, root, want_dir || level )))
return STATUS_RESOURCE_TYPE_NOT_FOUND;
if (!level--) return STATUS_SUCCESS;
resdirptr = *ret;
if (!(*ret = find_entry_by_name( resdirptr, (LPCWSTR)info->Name, root, want_dir || level )))
return STATUS_RESOURCE_NAME_NOT_FOUND;
if (!level--) return STATUS_SUCCESS;
if (level) return STATUS_INVALID_PARAMETER; /* level > 3 */
resdirptr = *ret;
if ((*ret = find_first_entry( resdirptr, root, want_dir ))) return STATUS_SUCCESS;
return STATUS_RESOURCE_DATA_NOT_FOUND;
done:
*ret = resdirptr;
return STATUS_SUCCESS;
}
NTSTATUS
NTAPI
RtlpSafeCopyMemory(
_Out_writes_bytes_all_(Length) VOID UNALIGNED *Destination,
_In_reads_bytes_(Length) CONST VOID UNALIGNED *Source,
_In_ SIZE_T Length)
{
_SEH2_TRY
{
RtlCopyMemory(Destination, Source, Length);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
_SEH2_YIELD(return _SEH2_GetExceptionCode());
}
_SEH2_END;
return STATUS_SUCCESS;
}
BOOLEAN
NTAPI
RtlCallVectoredExceptionHandlers(_In_ PEXCEPTION_RECORD ExceptionRecord,
_In_ PCONTEXT Context)
{
/* In the kernel we don't have vectored exception handlers */
return FALSE;
}
VOID
NTAPI
RtlCallVectoredContinueHandlers(_In_ PEXCEPTION_RECORD ExceptionRecord,
_In_ PCONTEXT Context)
{
/* No vectored continue handlers either in kernel mode */
return;
}
/* EOF */