Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 104 insertions, 0 deletions

diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SelFar32ToFlat32NoClobber.asm b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SelFar32ToFlat32NoClobber.asm
new file mode 100644
index 00000000..ff76d667
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SelFar32ToFlat32NoClobber.asm
@@ -0,0 +1,104 @@
+; $Id: bs3-cmn-SelFar32ToFlat32NoClobber.asm $
+;; @file
+; BS3Kit - Bs3SelFar32ToFlat32NoClobber.
+;
+
+;
+; Copyright (C) 2007-2019 Oracle Corporation
+;
+; This file is part of VirtualBox Open Source Edition (OSE), as
+; available from http://www.virtualbox.org. This file is free software;
+; you can redistribute it and/or modify it under the terms of the GNU
+; General Public License (GPL) as published by the Free Software
+; Foundation, in version 2 as it comes in the "COPYING" file of the
+; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+;
+; The contents of this file may alternatively be used under the terms
+; of the Common Development and Distribution License Version 1.0
+; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+; VirtualBox OSE distribution, in which case the provisions of the
+; CDDL are applicable instead of those of the GPL.
+;
+; You may elect to license modified versions of this file under the
+; terms and conditions of either the GPL or the CDDL or both.
+;
+
+
+;*********************************************************************************************************************************
+;*      Header Files                                                                                                             *
+;*********************************************************************************************************************************
+%include "bs3kit-template-header.mac"
+
+
+;*********************************************************************************************************************************
+;*  External Symbols                                                                                                             *
+;*********************************************************************************************************************************
+BS3_EXTERN_CMN Bs3SelFar32ToFlat32
+TMPL_BEGIN_TEXT
+
+
+;;
+; Wrapper around the Bs3SelFar32ToFlat32 C function that doesn't
+; clobber any registers nor require 20h stack scratch area (64-bit).
+;
+; @uses     Only return registers (ax:dx, eax, eax)
+; @remarks  No 20h scratch space required in 64-bit mode.
+;
+BS3_PROC_BEGIN_CMN Bs3SelFar32ToFlat32NoClobber, BS3_PBC_NEAR      ; Far stub generated by the makefile.
+        push    xBP
+        mov     xBP, xSP
+
+%if TMPL_BITS == 16
+        push    bx
+        push    cx
+        push    es
+
+        push    word [xBP + xCB + cbCurRetAddr + 4] ; uSel
+        push    word [xBP + xCB + cbCurRetAddr + 2] ; high off
+        push    word [xBP + xCB + cbCurRetAddr]     ; low off
+        call    Bs3SelFar32ToFlat32
+        add     sp, 6
+
+        pop     es
+        pop     cx
+        pop     bx
+%else
+        push    xDX
+        push    xCX
+ %if TMPL_BITS == 32
+        push    es
+        push    fs
+        push    gs
+
+        push    dword [xBP + xCB + cbCurRetAddr + 4] ; uSel
+        push    dword [xBP + xCB + cbCurRetAddr]     ; off
+        call    Bs3SelFar32ToFlat32
+        add     esp, 8
+
+        pop     gs
+        pop     fs
+        pop     es
+ %else
+        push    r8
+        push    r9
+        push    r10
+        push    r11
+        sub     rsp, 20h
+
+        call    Bs3SelFar32ToFlat32     ; Just pass ECX and DX along as-is.
+
+        add     rsp, 20h
+        pop     r11
+        pop     r10
+        pop     r9
+        pop     r8
+ %endif
+        pop     xCX
+        pop     xDX
+%endif
+
+        pop     xBP
+        BS3_HYBRID_RET
+BS3_PROC_END_CMN   Bs3SelFar32ToFlat32NoClobber
+