1 files changed, 58 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/math/fabs.asm b/src/VBox/Runtime/common/math/fabs.asm
new file mode 100644
index 00000000..71896700
--- /dev/null
+++ b/src/VBox/Runtime/common/math/fabs.asm
@@ -0,0 +1,58 @@
+; $Id: fabs.asm $
+;; @file
+; IPRT - No-CRT fabs - AMD64 & X86.
+;
+
+;
+; Copyright (C) 2006-2020 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.
+;
+
+%include "iprt/asmdefs.mac"
+
+BEGINCODE
+
+;;
+; Compute the absolute value of rd (|rd|).
+; @returns 32-bit: st(0)   64-bit: xmm0
+; @param    rd      32-bit: [ebp + 8]   64-bit: xmm0
+BEGINPROC RT_NOCRT(fabs)
+    push    xBP
+    mov     xBP, xSP
+
+%ifdef RT_ARCH_AMD64
+    sub     xSP, 10h
+
+    movsd   [xSP], xmm0
+    fld     qword [xSP]
+
+    fabs
+
+    fstp    qword [xSP]
+    movsd   xmm0, [xSP]
+
+%else
+    fld     qword [xBP + xCB*2]
+    fabs
+%endif
+
+    leave
+    ret
+ENDPROC   RT_NOCRT(fabs)
+