1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 3 2004, 2005 4 Free Software Foundation, Inc. 5 */ 6 7 !! libgcc routines for the Renesas / SuperH SH CPUs. 8 !! Contributed by Steve Chamberlain. 9 !! sac@cygnus.com 10 11 .balign 4 12 .global __udivsi3 13 .type __udivsi3, @function 14 div8: 15 div1 r5,r4 16 div7: 17 div1 r5,r4; div1 r5,r4; div1 r5,r4 18 div1 r5,r4; div1 r5,r4; div1 r5,r4; rts; div1 r5,r4 19 20 divx4: 21 div1 r5,r4; rotcl r0 22 div1 r5,r4; rotcl r0 23 div1 r5,r4; rotcl r0 24 rts; div1 r5,r4 25 26 __udivsi3: 27 sts.l pr,@-r15 28 extu.w r5,r0 29 cmp/eq r5,r0 30 bf/s large_divisor 31 div0u 32 swap.w r4,r0 33 shlr16 r4 34 bsr div8 35 shll16 r5 36 bsr div7 37 div1 r5,r4 38 xtrct r4,r0 39 xtrct r0,r4 40 bsr div8 41 swap.w r4,r4 42 bsr div7 43 div1 r5,r4 44 lds.l @r15+,pr 45 xtrct r4,r0 46 swap.w r0,r0 47 rotcl r0 48 rts 49 shlr16 r5 50 51 large_divisor: 52 mov #0,r0 53 xtrct r4,r0 54 xtrct r0,r4 55 bsr divx4 56 rotcl r0 57 bsr divx4 58 rotcl r0 59 bsr divx4 60 rotcl r0 61 bsr divx4 62 rotcl r0 63 lds.l @r15+,pr 64 rts 65 rotcl r0 66
