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Disable correct usage of ESP0 since it seems the V86 code is still not ready to handle that. This should fix the V86 exceptions some people have been having.

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svn path=/trunk/; revision=20914
This commit is contained in:
Alex Ionescu 2006-01-16 17:05:50 +00:00
parent 7d5b2bb49d
commit 68d8925879
2 changed files with 11 additions and 1 deletions
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8
reactos/ntoskrnl/ke/i386/ctxswitch.S
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@ -171,7 +171,10 @@ BadThread:
NoAdjust:
/* Set new ESP0 */
mov [ebp+KTSS_ESP0], eax
//mov [ebp+KTSS_ESP0], eax
/* Save it */
push [ebp+KTSS_ESP0]
/* Set TEB pointer */
mov eax, [esi+KTHREAD_TEB]
@ -257,6 +260,9 @@ SameProcess:
mov cr0, eax
4:
/* Restore ESP0 */
pop [ebp+KTSS_ESP0]
/* Restore exception list */
pop [ebx+KPCR_EXCEPTION_LIST]

4
reactos/ntoskrnl/ke/i386/thread.c
View file

@ -14,6 +14,7 @@
typedef struct _KSHARED_CTXSWITCH_FRAME
{
ULONG Esp0;
PVOID ExceptionList;
PVOID RetEip;
} KSHARED_CTXSWITCH_FRAME, *PKSHARED_CTXSWITCH_FRAME;
@ -231,6 +232,9 @@ Ke386InitThreadWithContext(PKTHREAD Thread,
/* And set up the Context Switch Frame */
CtxSwitchFrame->RetEip = KiThreadStartup;
CtxSwitchFrame->Esp0 = (ULONG_PTR)Thread->InitialStack -
sizeof(FX_SAVE_AREA) -
0x10;
CtxSwitchFrame->ExceptionList = (PVOID)0xFFFFFFFF;
/* Save back the new value of the kernel stack. */