[fireball] 31321: - Fix a problem with parameter passing in DispatchTwoParam (it was always zeroed, which was not correct). Problem found by Dmitry Philippov. - Fix a typo KiTrap14 which prevented correct passing of the error code to the exception dispatcher. (by Dmitry Philippov).

Author: fireball
Date: Wed Dec 19 13:29:08 2007
New Revision: 31321

URL: http://svn.reactos.org/svn/reactos?rev=31321&view=rev
Log:
- Fix a problem with parameter passing in DispatchTwoParam (it was always zeroed, which
was not correct). Problem found by Dmitry Philippov.
- Fix a typo KiTrap14 which prevented correct passing of the error code to the exception
dispatcher. (by Dmitry Philippov).

Modified:
    trunk/reactos/ntoskrnl/ke/i386/boot.S   (props changed)
    trunk/reactos/ntoskrnl/ke/i386/ctxswitch.S   (props changed)
    trunk/reactos/ntoskrnl/ke/i386/trap.s   (contents, props changed)
    trunk/reactos/ntoskrnl/ke/i386/usercall_asm.S   (props changed)
    trunk/reactos/ntoskrnl/ke/i386/v86m_sup.S   (props changed)

Propchange: trunk/reactos/ntoskrnl/ke/i386/boot.S
------------------------------------------------------------------------------
--- svn:needs-lock (original)
+++ svn:needs-lock (removed)
@@ -1,1 +1,0 @@
-*

Propchange: trunk/reactos/ntoskrnl/ke/i386/ctxswitch.S
------------------------------------------------------------------------------
--- svn:needs-lock (original)
+++ svn:needs-lock (removed)
@@ -1,1 +1,0 @@
-*

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 (original)
+++ trunk/reactos/ntoskrnl/ke/i386/trap.s Wed Dec 19 13:29:08 2007
@@ -657,7 +657,6 @@
 .func DispatchTwoParam
 _DispatchTwoParam:
     /* Call the common dispatcher */
-    xor edx, edx
     mov ecx, 2
     call _CommonDispatchException
 .endfunc
@@ -1230,6 +1229,7 @@
 
     /* Raise exception */
     mov eax, STATUS_FLOAT_STACK_CHECK
+    xor edx, edx
     jmp _DispatchTwoParam
 
 ValidNpxOpcode:
@@ -1449,6 +1449,7 @@
     mov ebx, [ebp+KTRAP_FRAME_EIP]
     mov esi, -1
     mov eax, STATUS_ACCESS_VIOLATION
+    xor edx, edx
     jmp _DispatchTwoParam
 
 RaiseIrql:
@@ -1593,6 +1594,7 @@
     mov esi, [ebp+KTRAP_FRAME_ERROR_CODE]
     and esi, 0xFFFF
     mov eax, STATUS_ACCESS_VIOLATION
+    xor edx, edx
     jmp _DispatchTwoParam
 
 MsrCheck:
@@ -1802,6 +1804,7 @@
     mov ebx, [ebp+KTRAP_FRAME_EIP]
     mov esi, -1
     mov eax, STATUS_ACCESS_VIOLATION
+    xor edx, edx
     jmp _DispatchTwoParam
 
 DispatchV86Gpf:
@@ -1900,8 +1903,8 @@
     /* Check if the fault occured in a V86 mode */
 CheckVdmPf:
     mov ecx, [ebp+KTRAP_FRAME_ERROR_CODE]
+    shr ecx, 1
     and ecx, 1
-    shr ecx, 1
     test dword ptr [ebp+KTRAP_FRAME_EFLAGS], EFLAGS_V86_MASK
     jnz VdmPF
 

Propchange: trunk/reactos/ntoskrnl/ke/i386/trap.s
------------------------------------------------------------------------------
--- svn:needs-lock (original)
+++ svn:needs-lock (removed)
@@ -1,1 +1,0 @@
-*

Propchange: trunk/reactos/ntoskrnl/ke/i386/usercall_asm.S
------------------------------------------------------------------------------
--- svn:needs-lock (original)
+++ svn:needs-lock (removed)
@@ -1,1 +1,0 @@
-*

Propchange: trunk/reactos/ntoskrnl/ke/i386/v86m_sup.S
------------------------------------------------------------------------------
--- svn:needs-lock (original)
+++ svn:needs-lock (removed)
@@ -1,1 +1,0 @@
-*