From f215e02bf85f68d3a6106c2a1f4f7f063f819064 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:17:27 +0200 Subject: Adding upstream version 7.0.14-dfsg. Signed-off-by: Daniel Baumann --- .../Runtime/common/math/RTUInt128MulByU64Ex.asm | 95 ++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 src/VBox/Runtime/common/math/RTUInt128MulByU64Ex.asm (limited to 'src/VBox/Runtime/common/math/RTUInt128MulByU64Ex.asm') 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 . +; +; 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 + -- cgit v1.2.3