1; Copyright (C) 2017-2020 Free Software Foundation, Inc. 2; Contributed by Sebastian Perta. 3; 4; This file is free software; you can redistribute it and/or modify it 5; under the terms of the GNU General Public License as published by the 6; Free Software Foundation; either version 3, or (at your option) any 7; later version. 8; 9; This file is distributed in the hope that it will be useful, but 10; WITHOUT ANY WARRANTY; without even the implied warranty of 11; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12; General Public License for more details. 13; 14; Under Section 7 of GPL version 3, you are granted additional 15; permissions described in the GCC Runtime Library Exception, version 16; 3.1, as published by the Free Software Foundation. 17; 18; You should have received a copy of the GNU General Public License and 19; a copy of the GCC Runtime Library Exception along with this program; 20; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 21; <http://www.gnu.org/licenses/>. 22 23 24#include "vregs.h" 25 26 .text 27 28START_FUNC ___umaxdi3 29 30 ; copy first argument/operand to the output registers 31 movw ax, [sp+4] 32 movw r8, ax 33 movw ax, [sp+6] 34 movw r10, ax 35 movw ax, [sp+8] 36 movw r12, ax 37 movw ax, [sp+10] 38 movw r14, ax 39 40 ; use 16-bit compares from the most significant words downto the least significant ones 41 movw ax, [sp+18] 42 cmpw ax, r14 43 bh $.L1 44 bnz $.L2 45 46 movw ax, [sp+16] 47 cmpw ax, r12 48 bh $.L1 49 bnz $.L2 50 51 movw ax, [sp+14] 52 cmpw ax, r10 53 bh $.L1 54 bnz $.L2 55 56 movw ax, [sp+12] 57 cmpw ax, r8 58 bh $.L1 59 ret 60 61.L1: 62 ; copy second argument/operand to the output registers 63 movw ax, [sp+12] 64 movw r8, ax 65 movw ax, [sp+14] 66 movw r10, ax 67 movw ax, [sp+16] 68 movw r12, ax 69 movw ax, [sp+18] 70 movw r14, ax 71.L2: 72 ret 73 74END_FUNC ___umaxdi3 75