18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0+ WITH GCC-exception-2.0 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ci Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 48c2ecf20Sopenharmony_ci 2004, 2005, 2006 58c2ecf20Sopenharmony_ci Free Software Foundation, Inc. 68c2ecf20Sopenharmony_ci*/ 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ci!! libgcc routines for the Renesas / SuperH SH CPUs. 98c2ecf20Sopenharmony_ci!! Contributed by Steve Chamberlain. 108c2ecf20Sopenharmony_ci!! sac@cygnus.com 118c2ecf20Sopenharmony_ci 128c2ecf20Sopenharmony_ci!! ashiftrt_r4_x, ___ashrsi3, ___ashlsi3, ___lshrsi3 routines 138c2ecf20Sopenharmony_ci!! recoded in assembly by Toshiyasu Morita 148c2ecf20Sopenharmony_ci!! tm@netcom.com 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci/* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and 178c2ecf20Sopenharmony_ci ELF local label prefixes by J"orn Rennecke 188c2ecf20Sopenharmony_ci amylaar@cygnus.com */ 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ 218c2ecf20Sopenharmony_ci /* n1 < d, but n1 might be larger than d1. */ 228c2ecf20Sopenharmony_ci .global __udiv_qrnnd_16 238c2ecf20Sopenharmony_ci .balign 8 248c2ecf20Sopenharmony_ci__udiv_qrnnd_16: 258c2ecf20Sopenharmony_ci div0u 268c2ecf20Sopenharmony_ci cmp/hi r6,r0 278c2ecf20Sopenharmony_ci bt .Lots 288c2ecf20Sopenharmony_ci .rept 16 298c2ecf20Sopenharmony_ci div1 r6,r0 308c2ecf20Sopenharmony_ci .endr 318c2ecf20Sopenharmony_ci extu.w r0,r1 328c2ecf20Sopenharmony_ci bt 0f 338c2ecf20Sopenharmony_ci add r6,r0 348c2ecf20Sopenharmony_ci0: rotcl r1 358c2ecf20Sopenharmony_ci mulu.w r1,r5 368c2ecf20Sopenharmony_ci xtrct r4,r0 378c2ecf20Sopenharmony_ci swap.w r0,r0 388c2ecf20Sopenharmony_ci sts macl,r2 398c2ecf20Sopenharmony_ci cmp/hs r2,r0 408c2ecf20Sopenharmony_ci sub r2,r0 418c2ecf20Sopenharmony_ci bt 0f 428c2ecf20Sopenharmony_ci addc r5,r0 438c2ecf20Sopenharmony_ci add #-1,r1 448c2ecf20Sopenharmony_ci bt 0f 458c2ecf20Sopenharmony_ci1: add #-1,r1 468c2ecf20Sopenharmony_ci rts 478c2ecf20Sopenharmony_ci add r5,r0 488c2ecf20Sopenharmony_ci .balign 8 498c2ecf20Sopenharmony_ci.Lots: 508c2ecf20Sopenharmony_ci sub r5,r0 518c2ecf20Sopenharmony_ci swap.w r4,r1 528c2ecf20Sopenharmony_ci xtrct r0,r1 538c2ecf20Sopenharmony_ci clrt 548c2ecf20Sopenharmony_ci mov r1,r0 558c2ecf20Sopenharmony_ci addc r5,r0 568c2ecf20Sopenharmony_ci mov #-1,r1 578c2ecf20Sopenharmony_ci bf/s 1b 588c2ecf20Sopenharmony_ci shlr16 r1 598c2ecf20Sopenharmony_ci0: rts 608c2ecf20Sopenharmony_ci nop 61