1 files changed, 84 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/math/watcom/U8D-x86-32.asm b/src/VBox/Runtime/common/math/watcom/U8D-x86-32.asm
new file mode 100644
index 00000000..4eb22411
--- /dev/null
+++ b/src/VBox/Runtime/common/math/watcom/U8D-x86-32.asm
@@ -0,0 +1,84 @@
+; $Id: U8D-x86-32.asm $
+;; @file
+; BS3Kit - 32-bit Watcom C/C++, 64-bit unsigned integer division.
+;
+
+;
+; Copyright (C) 2007-2023 Oracle and/or its affiliates.
+;
+; This file is part of VirtualBox base platform packages, as
+; available from https://www.virtualbox.org.
+;
+; This program is free software; you can redistribute it and/or
+; modify it under the terms of the GNU General Public License
+; as published by the Free Software Foundation, in version 3 of the
+; License.
+;
+; This program is distributed in the hope that it will be useful, but
+; WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+; General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program; if not, see <https://www.gnu.org/licenses>.
+;
+; The contents of this file may alternatively be used under the terms
+; of the Common Development and Distribution License Version 1.0
+; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+; in the VirtualBox 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.
+;
+; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+;
+
+%include "iprt/asmdefs.mac"
+
+
+BEGINCODE
+
+extern NAME(RTWatcomUInt64Div)
+
+
+;;
+; 64-bit unsigned integer division.
+;
+; @returns  EDX:EAX Quotient, ECX:EBX Remainder.
+; @param    EDX:EAX     Dividend.
+; @param    ECX:EBX     Divisor
+;
+global __U8D
+__U8D:
+        ;
+        ; Convert to a C __cdecl call - not doing this in assembly.
+        ;
+
+        ; Set up a frame, allocating 16 bytes for the result buffer.
+        push    ebp
+        mov     ebp, esp
+        sub     esp, 10h
+
+        ; Pointer to the return buffer.
+        push    esp
+
+        ; The divisor.
+        push    ecx
+        push    ebx
+
+        ; The dividend.
+        push    edx
+        push    eax
+
+        call    NAME(RTWatcomUInt64Div)
+
+        ; Load the result.
+        mov     ecx, [ebp - 10h + 12]
+        mov     ebx, [ebp - 10h + 8]
+        mov     edx, [ebp - 10h + 4]
+        mov     eax, [ebp - 10h]
+
+        leave
+        ret
+