[dgorbachev] 42306: - Fix a bug in GPF handler, do not hang in it. - Initialize Esp field in TSS.

Author: dgorbachev
Date: Thu Jul 30 19:54:21 2009
New Revision: 42306

URL: http://svn.reactos.org/svn/reactos?rev=42306&view=rev
Log:
- Fix a bug in GPF handler, do not hang in it.
- Initialize Esp field in TSS.

Modified:
    trunk/reactos/ntoskrnl/ke/i386/cpu.c
    trunk/reactos/ntoskrnl/ke/i386/trap.s

Modified: trunk/reactos/ntoskrnl/ke/i386/cpu.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/i386/cpu.c?rev…
==============================================================================
--- trunk/reactos/ntoskrnl/ke/i386/cpu.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/ke/i386/cpu.c [iso-8859-1] Thu Jul 30 19:54:21 2009
@@ -650,6 +650,7 @@
     KiInitializeTSS(Tss);
     Tss->CR3 = __readcr3();
     Tss->Esp0 = PtrToUlong(KiDoubleFaultStack);
+    Tss->Esp = PtrToUlong(KiDoubleFaultStack);
     Tss->Eip = PtrToUlong(KiTrap8);
     Tss->Cs = KGDT_R0_CODE;
     Tss->Fs = KGDT_R0_PCR;
@@ -679,6 +680,7 @@
     KiInitializeTSS(Tss);
     Tss->CR3 = __readcr3();
     Tss->Esp0 = PtrToUlong(KiDoubleFaultStack);
+    Tss->Esp = PtrToUlong(KiDoubleFaultStack);
     Tss->Eip = PtrToUlong(KiTrap2);
     Tss->Cs = KGDT_R0_CODE;
     Tss->Fs = KGDT_R0_PCR;

Modified: trunk/reactos/ntoskrnl/ke/i386/trap.s
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/i386/trap.s?re…
==============================================================================
--- trunk/reactos/ntoskrnl/ke/i386/trap.s [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/ke/i386/trap.s [iso-8859-1] Thu Jul 30 19:54:21 2009
@@ -1338,7 +1338,6 @@
 .globl _KiTrap8
 .func KiTrap8
 _KiTrap8:
-
     /* Can't really do too much */
     mov eax, 8
     jmp _KiSystemFatalException
@@ -1511,6 +1510,7 @@
     cmp eax, offset CheckPrivilegedInstruction
     jbe KmodeGpf
     cmp eax, offset CheckPrivilegedInstruction2
+    jae KmodeGpf
 
     /* FIXME: TODO */
     UNHANDLED_PATH