[ion] 20934: - Implement first version of trap exit macro. Currently missing documentation, and the parameters could probably be simplified.
17 Jan
2006
17 Jan
'06
5:22 a.m.
- Implement first version of trap exit macro. Currently missing
documentation, and the parameters could probably be simplified.
Modified: trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S
Modified: trunk/reactos/ntoskrnl/ke/i386/syscall.S
_____
Modified: trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S
--- trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S
2006-01-17 05:05:35 UTC (rev 20933)
+++ trunk/reactos/ntoskrnl/include/internal/i386/asmmacro.S
2006-01-17 05:22:00 UTC (rev 20934)
@@ -1,13 +1,27 @@
/*
* COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS kernel
- * FILE: ntoskrnlinclude/i386/asmmacro.S
- * PURPOSE: Assembly Macros for Spinlocks and common Trap Code
(TODO)
+ * PROJECT: ReactOS Kernel
+ * FILE: ntoskrnl/include/i386/asmmacro.S
+ * PURPOSE: Assembly Macros for Spinlocks and common Trap Code
* PROGRAMMERS: Alex Ionescu (alex(a)relsoft.net)
*/
/* INCLUDES
******************************************************************/
+
#include <ndk/asm.h>
+
+// Arguments for TRAP_EPILOG
+#define FromSystemCall 1
+#define DoRestorePreviousMode 1
+#define DoRestoreEverything 1
+#define DoRestoreSegments 1
+#define DoRestoreVolatiles 1
+#define NotFromSystemCall 0
+#define DoNotRestorePreviousMode 0
+#define DoNotRestoreEverything 0
+#define DoNotRestoreSegments 0
+#define DoNotRestoreVolatiles 0
+
.intel_syntax noprefix
//
@@ -219,5 +233,228 @@
/* Set the Trap Frame Debug Header */ \
SET_TF_DEBUG_HEADER
+//
+// @name TRAP_EPILOG
+//
+// This macro creates a standard trap entry prologue.
+// It should be used for entry into any kernel trap (KiTrapXx), but not
for
+// system calls, which require special handling.
+//
+// @param Label
+// Identifying name of the caller function; will be used to
append
+// to the name V86 and DR helper functions, which must already
exist.
+//
+// @remark
+//
+.macro TRAP_EPILOG SystemCall, RestorePreviousMode, RestoreSegments,
RestoreVolatiles, RestoreAllRegs
+#ifdef DBG
+ /* Assert the flags */
+ pushfd
+ pop edx
+ test edx, EFLAGS_INTERRUPT_MASK
+ jnz 1f
+ /* Assert the stack */
+ cmp esp, ebp
+ jnz 1f
+ /* Assert the trap frame */
+0:
+ //sub dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
+ //jnz 2f
+
+ /* Assert FS */
+ mov bx, fs
+ cmp bx, KGDT_R0_PCR
+ jnz 1f
+
+ /* Assert exception list */
+ cmp dword ptr fs:[KPCR_EXCEPTION_LIST], 0
+ jnz 4f
+2:
+ add dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
+1:
+ int 3
+ jmp 0b
+4:
+#endif
+
+ /* Get exception list */
+ mov edx, [esp+KTRAP_FRAME_EXCEPTION_LIST]
+
+#ifdef DBG
+ /* Assert the saved exception list */
+ or edx, edx
+ jnz 5f
+ int 3
+5:
+#endif
+
+ /* Restore it */
+ mov [fs:KPCR_EXCEPTION_LIST], edx
+
+.if \RestorePreviousMode
+ /* Get previous mode */
+ mov ecx, [esp+KTRAP_FRAME_PREVIOUS_MODE]
+
+#ifdef DBG
+ /* Assert the saved previous mode */
+ cmp ecx, -1
+ jnz 6f
+ int 3
+6:
+#endif
+
+ /* Restore the previous mode */
+ mov esi, [fs:KPCR_CURRENT_THREAD]
+ mov byte ptr [esi+KTHREAD_PREVIOUS_MODE], cl
+.endif
+
+ /* Check for V86 */
+ test dword ptr [esp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
+ jnz V86_Exit
+
+ /* Check if the frame was edited */
+ test word ptr [esp+KTRAP_FRAME_CS], FRAME_EDITED
+ jz 7f
+
+.ifeq \RestoreAllRegs
+ /* Check the old mode */
+ cmp word ptr [esp+KTRAP_FRAME_CS], KGDT_R3_CODE + RPL_MASK
+ bt word ptr [esp+KTRAP_FRAME_CS], 0
+ cmc
+ ja 8f
+.endif
+
+.if \RestoreVolatiles
+ /* Restore volatiles */
+ mov edx, [esp+KTRAP_FRAME_EDX]
+ mov ecx, [esp+KTRAP_FRAME_ECX]
+ mov eax, [esp+KTRAP_FRAME_EAX]
+.endif
+
+ /* Check if we were called from kernel mode */
+ cmp dword ptr [ebp+KTRAP_FRAME_CS], KGDT_R0_CODE
+ jz 9f
+
+.if \RestoreSegments
+ /* Restore segment registers */
+ lea esp, [ebp+KTRAP_FRAME_GS]
+ pop gs
+ pop es
+ pop ds
+.endif
+
+ /* Restore FS */
+3:
+ lea esp, [ebp+KTRAP_FRAME_FS]
+ pop fs
+
+9:
+ /* Skip debug information and unsaved registers */
+ lea esp, [ebp+KTRAP_FRAME_EDI]
+ pop edi
+ pop esi
+ pop ebx
+ pop ebp
+
+ /* Check for ABIOS */
+ cmp word ptr [esp+8], 0x80
+ ja AbiosExit
+
+ /* Pop error code */
+ add esp, 4
+
+.if \SystemCall
+ /* Check if previous CS is from user-mode */
+ test dword ptr [esp+4], 1
+
+ /* It is, so use Fast Exit */
+ jnz FastExit
+
+ /* Jump back to stub */
+ pop edx
+ pop ecx
+ popf
+ jmp edx
+
+.ret:
+.endif
+ iret
+
+.if \SystemCall
+FastExit:
+ /* Is SYSEXIT Supported/Wanted? */
+ cmp dword ptr ss:[_KiFastSystemCallDisable], 0
+ jnz .ret
+ test dword ptr [esp+8], EFLAGS_TF
+ jnz .ret
+
+ /* Restore FS to TIB */
+ mov ecx, KGDT_R3_TEB + RPL_MASK
+ mov fs, ecx
+
+ /* We will be cleaning up the stack ourselves */
+ pop edx /* New Ring 3 EIP */
+ add esp, 4 /* Skip Ring 3 DS */
+ and dword ptr [esp], 0xfffffdff /* Remove
EFLAGS_INTERRUPT_MASK from EFLAGS */
+ popf /* Restore old EFLAGS */
+ pop ecx /* Old Ring 3 SS:ESP */
+
+ /*
+ * At this point:
+ * ECX points to the old User Stack.
+ * EDX points to the instruction to execute in usermode after
the sysenter
+ */
+ sti
+ sysexit
+.endif
+
+8:
+ /* Restore EAX */
+ mov eax, [esp+KTRAP_FRAME_EAX]
+
+ /* Skip registers */
+ add esp, 0x30
+
+ /* Restore segments and volatiles */
+ pop gs
+ pop es
+ pop ds
+ pop edx
+ pop ecx
+
+ /* Jump back to mainline code */
+ jmp 3b
+
+7:
+ /* Restore real CS value */
+ mov ebx, [esp+KTRAP_FRAME_TEMPCS]
+ mov [esp+KTRAP_FRAME_CS], ebx
+
+ /*
+ * If ESP was modified, then a special interrupt exit stack
+ * must be created to "update" ESP's value in a legal manner
+ */
+ mov ebx, [esp+KTRAP_FRAME_TEMPESP]
+ sub ebx, 0xC
+ mov [esp+KTRAP_FRAME_ERROR_CODE], ebx
+
+ /* Copy Interrupt Stack */
+ mov esi, [esp+KTRAP_FRAME_EFLAGS]
+ mov [ebx+8], esi
+ mov esi, [esp+KTRAP_FRAME_CS]
+ mov [ebx+4], esi
+ mov esi, [esp+KTRAP_FRAME_EIP]
+ mov [ebx], esi
+
+ /* Return */
+ add esp, KTRAP_FRAME_EDI
+ pop edi
+ pop esi
+ pop ebx
+ pop ebp
+ mov esp, [esp]
+ iret
+.endm
+
_____
Modified: trunk/reactos/ntoskrnl/ke/i386/syscall.S
--- trunk/reactos/ntoskrnl/ke/i386/syscall.S 2006-01-17 05:05:35 UTC
(rev 20933)
+++ trunk/reactos/ntoskrnl/ke/i386/syscall.S 2006-01-17 05:22:00 UTC
(rev 20934)
@@ -16,59 +16,10 @@
.intel_syntax noprefix
/*
- * There are 3 main types of Trap Entries: <= Move this to asmmacro.S
- *
- * - System Calls
- * - TODO
- *
- * - Exceptions
- * - TODO
- *
- * - Interrupts
- * - TODO
- */
-
-/*
- * There are 3 main types of Trap Exits: <= Correct some things and
move to asmmacro.S
- *
- * - KiServiceExit
- * - Clear interrupt flag
- * - Common User APC Dispatching
- * - Common exit code; segments and volatiles are not restored
- * You use this for System Call return, when volatiles are irrelevant.
- * (NtContinue, NtRaiseException, KiCallUserMode and all System Call
returns)
- *
- * - KiServiceExit2
- * - Clear interrupt flag
- * - Common User APC Dispatching
- * - Common exit code; the entire frame is restored.
- * You use this when volatiles and other registers need to be restored.
- * For example, if debugging is active (NtContinue, NtRaiseException).
- *
- * - Kei386EoiHelper
- * - Clear interrupt flag
- * - Common User APC Dispatching
- * - Common exit code; the entire frame is restored but *NOT* the
Previous Mode
- * You use this in the same context as KiServiceExit2, but when the
Previous Mode
- * should be tampered with. Clearly, as its name suggests, this routine
is mostly
- * useful for End Of Interrupts.
- * Note that this routine is EXPORTED.
- * Note that this routine must called by a JMP, not a CALL.
- */
-
-/*
- * The common exit code has 3 modes of operation:
- * - Whether or not to restore segments
- * - Whether or not to restore volatiles
- * - Whether or not to restore the previous mode
- * All these are exemplified by the 3 trap exits shown above
- */
-
- /*
* FIXMEs:
* - Figure out why ES/DS gets messed up in VMWare, when doing
KiServiceExit only,
* and only when called from user-mode, and returning to
user-mode.
- * - Use macros and merge with trap.s nicely
+ * - Implement SYSCALL_PROLOG macro.
*/
/*** This file is a mess; it is being worked on. Please contact Alex:
@@ -101,7 +52,6 @@
.func KiFastCallEntry
_KiFastCallEntry:
-// ==================== UNIQUE SYSENTER STUB. DO NOT DUPLICATE
============//
/* Set FS to PCR */
mov ecx, KGDT_R0_PCR
mov fs, cx
@@ -181,7 +131,7 @@
.func KiSystemService
_KiSystemService:
-// ==================== UNIQUE SYSCALL TRAP ENTRY DO NOT DUPLICATE
============//
+// ==================== COMMON SYSTEM CALL CODE ============//
/* Create a trap frame */
push 0
push ebp
@@ -205,7 +155,7 @@
/* Save the old previous mode */
push ss:[esi+KTHREAD_PREVIOUS_MODE]
-
+
/* Skip the other registers */
sub esp, 0x48
@@ -415,162 +365,38 @@
mov es, [ebp+KTRAP_FRAME_ES]
mov ds, [ebp+KTRAP_FRAME_DS]
-// ========================= COMMON TRAP EXIT CODE
===================//
-#ifdef DBG
- /* Assert the flags */
- pushfd
- pop edx
- test edx, EFLAGS_INTERRUPT_MASK
- jnz InvalidExitState
+ /* Exit and cleanup */
+ TRAP_EPILOG FromSystemCall, DoRestorePreviousMode,
DoNotRestoreSegments, DoNotRestoreVolatiles, DoRestoreEverything
+.endfunc
- /* Assert the stack */
- cmp esp, ebp
- jnz InvalidExitState
+KiBBTUnexpectedRange:
- /* Assert the trap frame */
-StateCheckDone:
- sub dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
- jnz InvalidTrapFrame
+ /* If this isn't a Win32K call, fail */
+ cmp ecx, 0x10
+ jne InvalidCall
- /* Assert FS */
- mov bx, fs
- cmp bx, KGDT_R0_PCR
- jnz InvalidFs
+ /* Set up Win32K Table */
+ push edx
+ push ebx
+ call _PsConvertToGuiThread@0
- /* Assert exception list */
- cmp dword ptr fs:[KPCR_EXCEPTION_LIST], 0
- jnz ExceptionListOK
-
-InvalidFs:
- push -1
- call _KeBugCheck@4
-
-InvalidTrapFrame:
- add dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
-
-InvalidExitState:
- int 3
- jmp StateCheckDone
-
-ExceptionListOK:
-#endif
-
- /* Get exception list */
- mov edx, [esp+KTRAP_FRAME_EXCEPTION_LIST]
-
-#ifdef DBG
- /* Assert the saved exception list */
- or edx, edx
- jnz ListOk
- int 3
-
-ListOk:
-#endif
-
- /* Restore it */
- mov [fs:KPCR_EXCEPTION_LIST], edx
-
-// ==================== ONLY IF PREVIOUS MODE NEEDED
==================//
- /* Get previous mode */
- mov ecx, [esp+KTRAP_FRAME_PREVIOUS_MODE]
-
-#ifdef DBG
- /* Assert the saved previous mode */
- cmp ecx, -1
- jnz ModeOk
- int 3
-
-ModeOk:
-#endif
-
- /* Restore the previous mode */
- mov esi, [fs:KPCR_CURRENT_THREAD]
- mov byte ptr [esi+KTHREAD_PREVIOUS_MODE], cl
-// ==================== END IF PREVIOUS MODE NEEDED
===================//
-
- /* Check for V86 */
- test dword ptr [esp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
- jnz V86_Exit
-
- /* Check if the frame was edited */
- test word ptr [esp+KTRAP_FRAME_CS], FRAME_EDITED
- jz EditedFrame
-
-// ==================== ONLY IF FULL RESTORE NEEDED
===================//
- /* Check the old mode */
- cmp word ptr [esp+KTRAP_FRAME_CS], KGDT_R3_CODE + RPL_MASK
- bt word ptr [esp+KTRAP_FRAME_CS], 0
- cmc
- ja RestoreAll
- cmp dword ptr [ebp+KTRAP_FRAME_CS], KGDT_R0_CODE
- jz CommonStackClean
-// ==================== END IF FULL RESTORE NEEDED
====================//
-
- /* Restore FS */
-RestoreFs:
- lea esp, [ebp+KTRAP_FRAME_FS]
- pop fs
-
-CommonStackClean:
- /* Skip debug information and unsaved registers */
- lea esp, [ebp+KTRAP_FRAME_EDI]
- pop edi
- pop esi
- pop ebx
- pop ebp
-
- /* Check for ABIOS */
- cmp word ptr [esp+8], 0x80
- ja AbiosExit
-
-AbiosReturn:
- /* Pop error code */
- add esp, 4
-
- /* Check if previous CS is from user-mode */
- test dword ptr [esp+4], 1
-
- /* It is, so use Fast Exit */
- jnz FastRet
-
- /* Jump back to stub */
+ /* FIXME: Handle failure */
+ pop eax
pop edx
- pop ecx
- popf
- jmp edx
-IntRet:
+ /* Reset trap frame address */
+ mov ebp, esp
+ mov [esi+KTHREAD_TRAP_FRAME], ebp
- iret
+ /* Try the Call again */
+ jmp CheckValidCall
-FastRet:
- /* Is SYSEXIT Supported/Wanted? */
- cmp dword ptr ss:[_KiFastSystemCallDisable], 0
- jnz IntRet
- test dword ptr [esp+8], EFLAGS_TF
- jnz IntRet
+InvalidCall:
- /* Restore FS to TIB */
- mov ecx, KGDT_R3_TEB + RPL_MASK
- mov fs, ecx
+ /* Invalid System Call */
+ mov eax, STATUS_INVALID_SYSTEM_SERVICE
+ jmp KeReturnFromSystemCall
- /* We will be cleaning up the stack ourselves */
- pop edx /* New Ring 3 EIP */
- add esp, 4 /* Skip Ring 3 DS */
-/* and dword ptr [esp], ~EFLAGS_INTERRUPT_MASK Line below is
equivalent to this,
- but older binutils
versions don't understand ~ */
- and dword ptr [esp], 0xfffffdff /* Remove IRQ hack from
EFLAGS */
- popf /* Restore old EFLAGS */
- pop ecx /* Old Ring 3 SS:ESP */
-
- /*
- * At this point:
- * ECX points to the old User Stack.
- * EDX points to the instruction to execute in usermode after
the sysenter
- */
- sti
- sysexit
-
#ifdef DBG
InvalidIrql:
/* Save current IRQL */
@@ -604,106 +430,6 @@
ret
#endif
-V86_Exit:
- /* Move to EDX position */
- add esp, KTRAP_FRAME_EDX
-
- /* Restore volatiles */
- pop edx
- pop ecx
- pop eax
-
- /* Move to non-volatiles */
- lea esp, [ebp+KTRAP_FRAME_EDI]
- pop edi
- pop esi
- pop ebx
- pop ebp
-
- /* Skip error code and return */
- add esp, 4
- iret
-
-AbiosExit:
- /* Not yet supported */
- int 3
-
-RestoreAll:
- /* Restore EAX */
- mov eax, [esp+KTRAP_FRAME_EAX]
-
- /* Skip registers */
- add esp, 0x30
-
- /* Restore segments and volatiles */
- pop gs
- pop es
- pop ds
- pop edx
- pop ecx
-
- /* Jump back to mainline code */
- jmp RestoreFs
-
-EditedFrame:
- /* Restore real CS value */
- mov ebx, [esp+KTRAP_FRAME_TEMPCS]
- mov [esp+KTRAP_FRAME_CS], ebx
-
- /*
- * If ESP was modified, then a special interrupt exit stack
- * must be created to "update" ESP's value in a legal manner
- */
- mov ebx, [esp+KTRAP_FRAME_TEMPESP]
- sub ebx, 0xC
- mov [esp+KTRAP_FRAME_ERROR_CODE], ebx
-
- /* Copy Interrupt Stack */
- mov esi, [esp+KTRAP_FRAME_EFLAGS]
- mov [ebx+8], esi
- mov esi, [esp+KTRAP_FRAME_CS]
- mov [ebx+4], esi
- mov esi, [esp+KTRAP_FRAME_EIP]
- mov [ebx], esi
-
- /* Return */
- add esp, KTRAP_FRAME_EDI
- pop edi
- pop esi
- pop ebx
- pop ebp
- mov esp, [esp]
- iret
-
-KiBBTUnexpectedRange:
-
- /* If this isn't a Win32K call, fail */
- cmp ecx, 0x10
- jne InvalidCall
-
- /* Set up Win32K Table */
- push edx
- push ebx
- call _PsConvertToGuiThread@0
-
- /* FIXME: Handle failure */
- pop eax
- pop edx
-
- /* Reset trap frame address */
- mov ebp, esp
- mov [esi+KTHREAD_TRAP_FRAME], ebp
-
- /* Try the Call again */
- jmp CheckValidCall
-
-InvalidCall:
-
- /* Invalid System Call */
- mov eax, STATUS_INVALID_SYSTEM_SERVICE
- jmp KeReturnFromSystemCall
-.endfunc
-
.func KiServiceExit2
_KiServiceExit2:
@@ -713,155 +439,48 @@
/* Check for, and deliver, User-Mode APCs if needed */
CHECK_FOR_APC_DELIVER 0
-#ifdef DBG
- /* Assert the flags */
- pushfd
- pop edx
- test edx, EFLAGS_INTERRUPT_MASK
- jnz InvalidExitState2
+ /* Exit and cleanup */
+ TRAP_EPILOG NotFromSystemCall, DoRestorePreviousMode,
DoRestoreSegments, DoRestoreVolatiles, DoNotRestoreEverything
+.endfunc
- /* Assert the stack */
- cmp esp, ebp
- jnz InvalidExitState2
+.globl _Kei386EoiHelper@0
+.func Kei386EoiHelper@0
+_Kei386EoiHelper@0:
- /* Assert the trap frame */
-StateCheckDone2:
- sub dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
- jnz InvalidTrapFrame2
+ /* Disable interrupts */
+ cli
- /* Assert FS */
- mov bx, fs
- cmp bx, KGDT_R0_PCR
- jnz InvalidFs2
+ /* Check for, and deliver, User-Mode APCs if needed */
+ CHECK_FOR_APC_DELIVER 0
- /* Assert exception list */
- cmp dword ptr fs:[KPCR_EXCEPTION_LIST], 0
- jnz ExceptionListOK2
+ /* Exit and cleanup */
+ TRAP_EPILOG NotFromSystemCall, DoNotRestorePreviousMode,
DoRestoreSegments, DoRestoreVolatiles, DoNotRestoreEverything
+.endfunc
-InvalidFs2:
- push -1
- call _KeBugCheck@4
+V86_Exit:
+ /* Move to EDX position */
+ add esp, KTRAP_FRAME_EDX
-InvalidTrapFrame2:
- add dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
-
-InvalidExitState2:
- int 3
- jmp StateCheckDone2
-
-ExceptionListOK2:
-#endif
-
- /* Get exception list */
- mov edx, [esp+KTRAP_FRAME_EXCEPTION_LIST]
-
-#ifdef DBG
- /* Assert the saved exception list */
- or edx, edx
- jnz ListOk2
- int 3
-
-ListOk2:
-#endif
-
- /* Restore it */
- mov [fs:KPCR_EXCEPTION_LIST], edx
-
-// ==================== ONLY IF PREVIOUS MODE NEEDED
==================//
- /* Get previous mode */
- mov ecx, [esp+KTRAP_FRAME_PREVIOUS_MODE]
-
-#ifdef DBG
- /* Assert the saved previous mode */
- cmp ecx, -1
- jnz ModeOk2
- int 3
-
-ModeOk2:
-#endif
-
- /* Restore previous mode */
- mov esi, [fs:KPCR_CURRENT_THREAD]
- mov byte ptr [esi+KTHREAD_PREVIOUS_MODE], cl
-
- /* Check for V86 */
- test dword ptr [esp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
- jnz V86_Exit
-
- /* Check if the frame was edited */
- test word ptr [esp+KTRAP_FRAME_CS], FRAME_EDITED
- jz EditedFrame2
-
/* Restore volatiles */
- mov edx, [esp+KTRAP_FRAME_EDX]
- mov ecx, [esp+KTRAP_FRAME_ECX]
- mov eax, [esp+KTRAP_FRAME_EAX]
+ pop edx
+ pop ecx
+ pop eax
- /* Check if it was kernel */
- cmp word ptr [ebp+KTRAP_FRAME_CS], KGDT_R0_CODE
- jz CommonStackClean2
-
- /* Skip registers */
- lea esp, [ebp+KTRAP_FRAME_GS]
-
- /* Restore segments and volatiles */
- pop gs
- pop es
- pop ds
- lea esp, [ebp+KTRAP_FRAME_FS]
- pop fs
-
-CommonStackClean2:
- /* Skip debug information and unsaved registers */
+ /* Move to non-volatiles */
lea esp, [ebp+KTRAP_FRAME_EDI]
pop edi
pop esi
pop ebx
pop ebp
- /* Check for ABIOS */
- cmp word ptr [esp+8], 0x80
- ja AbiosExit
-
- /* Pop error code and return */
+ /* Skip error code and return */
add esp, 4
iret
-EditedFrame2:
- /* Restore real CS value */
- mov ebx, [esp+KTRAP_FRAME_TEMPCS]
- mov [esp+KTRAP_FRAME_CS], ebx
+AbiosExit:
+ /* Not yet supported */
+ int 3
- /*
- * If ESP was modified, then a special interrupt exit stack
- * must be created to "update" ESP's value in a legal manner
- */
- mov ebx, [esp+KTRAP_FRAME_TEMPESP]
- sub ebx, 0xC
- mov [esp+KTRAP_FRAME_ERROR_CODE], ebx
-
- /* Copy Interrupt Stack */
- mov esi, [esp+KTRAP_FRAME_EFLAGS]
- mov [ebx+8], esi
- mov esi, [esp+KTRAP_FRAME_CS]
- mov [ebx+4], esi
- mov esi, [esp+KTRAP_FRAME_EIP]
- mov [ebx], esi
-
- /* Restore volatiles */
- mov eax, [esp+KTRAP_FRAME_EAX]
- mov edx, [esp+KTRAP_FRAME_EDX]
- mov ecx, [esp+KTRAP_FRAME_ECX]
-
- /* Return */
- add esp, KTRAP_FRAME_EDI
- pop edi
- pop esi
- pop ebx
- pop ebp
- mov esp, [esp]
- iret
-
_KiDebugService:
/* Push error code */
@@ -915,151 +534,7 @@
/* Exit through common routine */
jmp _Kei386EoiHelper@0
-.endfunc
-.globl _Kei386EoiHelper@0
-.func Kei386EoiHelper@0
-_Kei386EoiHelper@0:
-
- /* Disable interrupts */
- cli
-
- /* Check for, and deliver, User-Mode APCs if needed */
- CHECK_FOR_APC_DELIVER 0
-
-#ifdef DBG
- /* Assert the flags */
- pushfd
- pop edx
- test edx, EFLAGS_INTERRUPT_MASK
- jnz InvalidExitState3
-
- /* Assert the stack */
- cmp esp, ebp
- jnz InvalidExitState3
-
- /* Assert the trap frame */
-StateCheckDone3:
- //sub dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
- //jnz InvalidTrapFrame3
-
- /* Assert FS */
- mov bx, fs
- cmp bx, KGDT_R0_PCR
- jnz InvalidFs3
-
- /* Assert exception list */
- cmp dword ptr fs:[KPCR_EXCEPTION_LIST], 0
- jnz ExceptionListOK3
-
-InvalidFs3:
- push -1
- call _KeBugCheck@4
-
-InvalidTrapFrame3:
- add dword ptr [esp+KTRAP_FRAME_DEBUGARGMARK], 0xBADB0D00
-
-InvalidExitState3:
- int 3
- jmp StateCheckDone3
-
-ExceptionListOK3:
-#endif
-
- /* Get exception list */
- mov edx, [esp+KTRAP_FRAME_EXCEPTION_LIST]
-
-#ifdef DBG
- /* Assert the saved exception list */
- or edx, edx
- jnz ListOk3
- int 3
-
-ListOk3:
-#endif
-
- /* Restore exception list */
- mov [fs:KPCR_EXCEPTION_LIST], edx
-
- /* Check for V86 */
- test dword ptr [esp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
- jnz V86_Exit
-
- /* Check if the frame was edited */
- test word ptr [esp+KTRAP_FRAME_CS], FRAME_EDITED
- jz EditedFrame3
-
- /* Restore volatiles */
- mov edx, [esp+KTRAP_FRAME_EDX]
- mov ecx, [esp+KTRAP_FRAME_ECX]
- mov eax, [esp+KTRAP_FRAME_EAX]
-
- /* Check if it was kernel */
- cmp word ptr [ebp+KTRAP_FRAME_CS], KGDT_R0_CODE
- jz CommonStackClean3
-
- /* Skip registers */
- lea esp, [ebp+KTRAP_FRAME_GS]
-
- /* Restore segments and volatiles */
- pop gs
- pop es
- pop ds
- lea esp, [ebp+KTRAP_FRAME_FS]
- pop fs
-
-CommonStackClean3:
- /* Skip debug information and unsaved registers */
- lea esp, [ebp+KTRAP_FRAME_EDI]
- pop edi
- pop esi
- pop ebx
- pop ebp
-
- /* Check for ABIOS */
- cmp word ptr [esp+8], 0x80
- ja AbiosExit
-
- /* Pop error code and return */
- add esp, 4
- iret
-
-EditedFrame3:
- /* Restore real CS value */
- mov ebx, [esp+KTRAP_FRAME_TEMPCS]
- mov [esp+KTRAP_FRAME_CS], ebx
-
- /*
- * If ESP was modified, then a special interrupt exit stack
- * must be created to "update" ESP's value in a legal manner
- */
- mov ebx, [esp+KTRAP_FRAME_TEMPESP]
- sub ebx, 0xC
- mov [esp+KTRAP_FRAME_ERROR_CODE], ebx
-
- /* Copy Interrupt Stack */
- mov esi, [esp+KTRAP_FRAME_EFLAGS]
- mov [ebx+8], esi
- mov esi, [esp+KTRAP_FRAME_CS]
- mov [ebx+4], esi
- mov esi, [esp+KTRAP_FRAME_EIP]
- mov [ebx], esi
-
- /* Restore volatiles */
- mov eax, [esp+KTRAP_FRAME_EAX]
- mov edx, [esp+KTRAP_FRAME_EDX]
- mov ecx, [esp+KTRAP_FRAME_ECX]
-
- /* Return */
- add esp, KTRAP_FRAME_EDI
- pop edi
- pop esi
- pop ebx
- pop ebp
- mov esp, [esp]
- iret
-.endfunc
-
.globl _NtRaiseException@12
_NtRaiseException@12:
6919
days inactive
6919
days old
0 comments
1 participants
participants (1)
-
ion＠svn.reactos.org