Changeset 5247 for trunk/src/win32k/dev32/d32CallGate.asm

Timestamp:

Feb 23, 2001, 3:57:55 AM (25 years ago)

Author:

bird

Message:

Calltable fixes. Handle event. New 14062e kernels.

File:

• trunk/src/win32k/dev32/d32CallGate.asm (modified) (6 diffs)

trunk/src/win32k/dev32/d32CallGate.asm

@@ -1 @@
-; $Id: d32CallGate.asm,v 1.2 2001-02-21 07:44:57 bird Exp $
+; $Id: d32CallGate.asm,v 1.3 2001-02-23 02:57:53 bird Exp $
 ;
 ; 32-bit CallGate used to communitcate fast between Ring-3 and Ring-0.
@@ -50 +50 @@
     extrn  k32SetOptions:near
     extrn  k32ProcessReadWrite:near
-    ;extrn  k32HandleSystemEvent:near
+    extrn  k32HandleSystemEvent:near
     extrn  k32QuerySystemMemInfo:near
     extrn  k32QueryCallGate:near
@@ -96 +96 @@
     dd  FLAT:k32SetOptions              ; K32_SETOPTIONS          0x04
     dd  FLAT:k32ProcessReadWrite        ; K32_PROCESSREADWRITE    0x05
-    ;dd  FLAT:k32HandleSystemEvent       ; K32_HANDLESYSTEMEVENT   0x06
-    dd  FLAT:k32APIStub
+    dd  FLAT:k32HandleSystemEvent       ; K32_HANDLESYSTEMEVENT   0x06
     dd  FLAT:k32QuerySystemMemInfo      ; K32_QUERYSYSTEMMEMINFO  0x07
     dd  FLAT:k32QueryCallGate           ; K32_QUERYCALLGATE       0x08
@@ -257 +256 @@
     mov     eax, [esp + 44h]            ; ulFunctionCode (parameter 2)
     sub     esp, 8h                     ; (Even when using _Oplink we have to reserve space for parameters.)
-    call    Win32kAPIRouter             ; This is my Ring-0 api. (d32Win32kIOCtl.c)
+    call    Win32kAPIRouter             ; This is my Ring-0 api router.
     add     esp, 8h
 
@@ -287 +286 @@
     ; Validate function number.
     ;
-    cmp     eax, 0
-    jne     APIR_notnull                ; This code should be faster (though it may look stupid to
+    test    eax,eax
+    jnz     APIR_notnull                ; This code should be faster (though it may look stupid to
                                         ; jump around like this). IIRC branch prediction allways
                                         ; takes a branch. And btw there are 4 NOPs after this jump!
@@ -310 +309 @@
     mov     ecx, acbK32Params[eax*4]    ; ecx <- size of parameter packet.
     sub     esp, ecx                    ; Reserve stack space for the parameter packet.
-    mov     eax, [pulTKSSBase32]
+    mov     eax, [pulTKSSBase32]        ; Calculate the FLAT address of esp.
     mov     eax, [eax]
-    add     eax, esp                    ; Calculate the FLAT address of esp.
+    add     eax, esp                    ; eax <- flat address of ss:esp
     push    ecx                         ; Save the size.
     ; TKFuBuff(pv, pvParam, acbParams[ulFunction], TK_FUSU_NONFATAL);