Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg

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

1 files changed, 95 insertions, 0 deletions

diff --git a/src/VBox/Runtime/common/math/RTUInt128MulByU64Ex.asm b/src/VBox/Runtime/common/math/RTUInt128MulByU64Ex.asm
new file mode 100644
index 00000000..6e913677
--- /dev/null
+++ b/src/VBox/Runtime/common/math/RTUInt128MulByU64Ex.asm
@@ -0,0 +1,95 @@
+; $Id: RTUInt128MulByU64Ex.asm $
+;; @file
+; IPRT - RTUInt128MulByU64 - AMD64 implementation.
+;
+
+;
+; Copyright (C) 2006-2023 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
+;
+
+
+%define RT_ASM_WITH_SEH64
+%include "iprt/asmdefs.mac"
+%include "internal/bignum.mac"
+
+
+BEGINCODE
+
+;;
+; Multiplies a 128-bit number with a 64-bit one, returning a 256-bit result.
+;
+; @returns puResult.
+; @param    puResult       x86:[ebp +  8]  gcc:rdi  msc:rcx
+; @param    puValue1       x86:[ebp + 12]  gcc:rsi  msc:rdx
+; @param    uValue2        x86:[ebp + 16]  gcc:rdx  msc:r8
+;
+RT_BEGINPROC RTUInt128MulByU64Ex
+;        SEH64_SET_FRAME_xSP 0
+SEH64_END_PROLOGUE
+
+%ifdef RT_ARCH_AMD64
+ %ifdef ASM_CALL64_GCC
+  %define puResult      rdi
+  %define puValue1      rsi
+  %define uValue2       r8
+        mov     r8, rdx
+ %else
+  %define puResult      rcx
+  %define puValue1      r9
+  %define uValue2       r8
+        mov     r9, rdx
+ %endif
+
+        ; puValue1->s.Lo * uValue2
+        mov     rax, [puValue1]
+        mul     uValue2
+        mov     [puResult], rax         ; Store the 1st 64-bit part of the result.
+        mov     r11, rdx                ; Save the upper 64 bits for later.
+
+        ; puValue1->s.Hi * uValue2
+        mov     rax, [puValue1 + 8]
+        mul     uValue2
+        add     r11, rax                ; Calc the second half of the result.
+        adc     rdx, 0
+        mov     [puResult + 8], r11     ; Store the 2nd 64-bit part of the result.
+        mov     [puResult + 16], rdx    ; Store the 3rd 64-bit part of the result.
+        xor     r10, r10
+        mov     [puResult + 24], r10    ; Store the 4th 64-bit part of the result.
+
+        mov     rax, puResult
+
+;%elifdef RT_ARCH_X86
+%else
+ %error "unsupported arch"
+%endif
+
+        ret
+ENDPROC RTUInt128MulByU64Ex
+