Changeset 15199 in vbox for trunk/src/VBox/VMM/VMMR0/HWACCMR0A.asm

Timestamp:

Dec 9, 2008 7:57:37 PM (16 years ago)

Author:

vboxsync

Message:

HWACCMR0A.asm: trimmed down VMXR0StartVM32 without any real effect. :/

File:

• trunk/src/VBox/VMM/VMMR0/HWACCMR0A.asm (modified) (1 diff)

trunk/src/VBox/VMM/VMMR0/HWACCMR0A.asm

@@ -1020 +1020 @@
 
     ; stack frame.
-    push    ebp
-    mov     ebp, esp
-    and     esp, 0fffffff0h
     push    esi
     push    edi
-    push    ebx
-    push    ds
-    push    es
     push    fs
     push    gs
-    push    ss
-
-    ; retf frame (64 -> 32).
-    push    0
-    push    cs
-    push    0
-    push    .thunk32
 
     ; jmp far .thunk64
     db      0xea
     dd      .thunk64, NAME(SUPR0Abs64bitKernelCS)
+
+ALIGNCODE(16)
 BITS 64
 .thunk64:
-    and     esp, 0ffffffffh
-    and     ebp, 0ffffffffh
-    mov     edi, [rbp + 8]              ; fResume
-    mov     esi, [rbp + 12]             ; pCtx
-    sub     rsp, 20h
+    sub     esp, 20h
+    mov     edi, [rsp + 20h + 14h]      ; fResume
+    mov     esi, [rsp + 20h + 18h]      ; pCtx
     call    NAME(VMXR0StartVM32_64)
-    add     rsp, 20h
-    retf
-BITS 32
+    add     esp, 20h
+    jmp far [.fpthunk32 wrt rip]
+.fpthunk32:                             ; 16:32 Pointer to .thunk32.
+    dd      .thunk32, NAME(SUPR0AbsKernelCS)
+
+BITS 32
+ALIGNCODE(16)
 .thunk32:
-    pop     ss
     pop     gs
     pop     fs
-    pop     es
-    pop     ds
-    pop     ebx
     pop     edi
     pop     esi
-    leave
     ret
 ENDPROC   VMXR0StartVM32