Changeset 10729 in vbox for trunk

Timestamp:

Jul 17, 2008 3:05:47 PM (16 years ago)

Author:

vboxsync

Message:

Drop the prc parameter. fixed the wrong cbParm/Data values in the fast path.

Location:

trunk/src/VBox/HostDrivers/Support/os2

Files:

• SUPDrv-os2.cpp (modified) (1 diff)
• SUPDrvA-os2.asm (modified) (2 diffs)

trunk/src/VBox/HostDrivers/Support/os2/SUPDrv-os2.cpp

@@ -229 +229 @@
 
 
-DECLASM(int) VBoxDrvIOCtlFast(uint16_t sfn, uint8_t iFunction, int32_t *prc)
+DECLASM(int) VBoxDrvIOCtlFast(uint16_t sfn, uint8_t iFunction)
 {
     /*

trunk/src/VBox/HostDrivers/Support/os2/SUPDrvA-os2.asm

@@ -314 +314 @@
     ;
     ; Fast IOCtl.
-    ;   DECLASM(int) VBoxDrvIOCtlFast(uint16_t sfn, uint8_t iFunction, uint16_t *pcbParm)
+    ;   DECLASM(int) VBoxDrvIOCtlFast(uint16_t sfn, uint8_t iFunction)
     ;
 VBoxDrvEP_GenIOCtl_Fast:
-    mov     ax, [es:bx + PKTIOCTL.pData + 2]        ; LDT selector to flat address.
-    shr     ax, 3
-    shl     eax, 16
-    mov     ax, [es:bx + PKTIOCTL.pData]
-    push    eax                                     ; 08h - pointer to the rc buffer.
-
     ; function.
     movzx   edx, byte [es:bx + PKTIOCTL.fun]
@@ -367 +361 @@
 
     ; setup output stuff.
-    mov     edx, esp
-    mov     eax, [ss:edx + 0ch]                     ; output sizes.
+    xor     eax, eax
     mov     [es:bx + PKTIOCTL.cbParm], eax          ; update cbParm and cbData.
     mov     word [es:bx + PKTHDR.status], 00100h    ; done, ok.