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Filip doesn't like int3. Implemented Trap6 failure on bad stack and V86M syscall return

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svn path=/trunk/; revision=17842
This commit is contained in:
Alex Ionescu 2005-09-13 20:26:57 +00:00
parent 99e5e010dc
commit 4d1f146406
1 changed files with 48 additions and 6 deletions
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54
reactos/ntoskrnl/ke/i386/syscall.S
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@ -93,12 +93,22 @@
BadStack:
/* Restore ESP0 stack */
int 3
mov ecx, [fs:KPCR_TSS]
mov esp, ss:[ecx+KTSS_ESP0]
/* FIXME: Generate Trap 6*/
int 3
/* Generate V86M Stack for Trap 6 */
push 0
push 0
push 0
push 0
/* Generate interrupt stack for Trap 6 */
push USER_DS
push 0
push 0x20202
push USER_CS
push 0
jmp _KiTrap6
_KiFastCallEntry:
@ -417,6 +427,7 @@ KiRosTrapReturn:
jnz V86_Exit
/* Check if the frame was edited */
V86_Exit_Return:
test word ptr [esp+KTRAP_FRAME_CS], FRAME_EDITED
jz EditedFrame
@ -500,8 +511,17 @@ FastRet:
sti
sysexit
AbiosExit:
V86_Exit:
/* Move to EDX position */
add esp, KTRAP_FRAME_EDX
/* Restore volatiles */
pop edx
pop ecx
pop eax
jmp V86_Exit_Return
AbiosExit:
/* Not yet supported */
int 3
@ -636,9 +656,10 @@ KiRosTrapReturn2:
/* Check for V86 */
test dword ptr [esp+KTRAP_FRAME_EFLAGS], X86_EFLAGS_VM
jnz V86_Exit
jnz V86_Exit2
/* Check if the frame was edited */
V86_Exit_Return2:
test word ptr [esp+KTRAP_FRAME_CS], FRAME_EDITED
jz EditedFrame2
@ -677,6 +698,16 @@ CommonStackClean2:
add esp, 4
iret
V86_Exit2:
/* Move to EDX position */
add esp, KTRAP_FRAME_EDX
/* Restore volatiles */
pop edx
pop ecx
pop eax
jmp V86_Exit_Return
EditedFrame2:
/* Restore real CS value */
mov ebx, [esp+KTRAP_FRAME_TEMPCS]
@ -838,9 +869,10 @@ KiRosTrapReturn3:
/* Check for V86 */
test dword ptr [esp+KTRAP_FRAME_EFLAGS], X86_EFLAGS_VM
jnz V86_Exit
jnz V86_Exit3
/* Check if the frame was edited */
V86_Exit_Return3:
test word ptr [esp+KTRAP_FRAME_CS], FRAME_EDITED
jz EditedFrame3
@ -879,6 +911,16 @@ CommonStackClean3:
add esp, 4
iret
V86_Exit3:
/* Move to EDX position */
add esp, KTRAP_FRAME_EDX
/* Restore volatiles */
pop edx
pop ecx
pop eax
jmp V86_Exit_Return
EditedFrame3:
/* Restore real CS value */
mov ebx, [esp+KTRAP_FRAME_TEMPCS]