1/* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2 2004, 2005, 2006 3 Free Software Foundation, Inc. 4 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8!! libgcc routines for the Renesas / SuperH SH CPUs. 9!! Contributed by Steve Chamberlain. 10!! sac@cygnus.com 11 12!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines 13!! recoded in assembly by Toshiyasu Morita 14!! tm@netcom.com 15 16/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and 17 ELF local label prefixes by J"orn Rennecke 18 amylaar@cygnus.com */ 19 20 /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ 21 /* n1 < d, but n1 might be larger than d1. */ 22 .global __udiv_qrnnd_16 23 .balign 8 24__udiv_qrnnd_16: 25 div0u 26 cmp/hi r6,r0 27 bt .Lots 28 .rept 16 29 div1 r6,r0 30 .endr 31 extu.w r0,r1 32 bt 0f 33 add r6,r0 340: rotcl r1 35 mulu.w r1,r5 36 xtrct r4,r0 37 swap.w r0,r0 38 sts macl,r2 39 cmp/hs r2,r0 40 sub r2,r0 41 bt 0f 42 addc r5,r0 43 add #-1,r1 44 bt 0f 451: add #-1,r1 46 rts 47 add r5,r0 48 .balign 8 49.Lots: 50 sub r5,r0 51 swap.w r4,r1 52 xtrct r0,r1 53 clrt 54 mov r1,r0 55 addc r5,r0 56 mov #-1,r1 57 bf/s 1b 58 shlr16 r1 590: rts 60 nop 61