diff options
Diffstat (limited to 'arch/hexagon/lib/divsi3.S')
| -rw-r--r-- | arch/hexagon/lib/divsi3.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/hexagon/lib/divsi3.S b/arch/hexagon/lib/divsi3.S new file mode 100644 index 000000000000..783e09424c2c --- /dev/null +++ b/arch/hexagon/lib/divsi3.S @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2021, The Linux Foundation. All rights reserved. + */ + +#include <linux/linkage.h> + +SYM_FUNC_START(__hexagon_divsi3) + { + p0 = cmp.gt(r0,#-1) + p1 = cmp.gt(r1,#-1) + r3:2 = vabsw(r1:0) + } + { + p3 = xor(p0,p1) + r4 = sub(r2,r3) + r6 = cl0(r2) + p0 = cmp.gtu(r3,r2) + } + { + r0 = mux(p3,#-1,#1) + r7 = cl0(r3) + p1 = cmp.gtu(r3,r4) + } + { + r0 = mux(p0,#0,r0) + p0 = or(p0,p1) + if (p0.new) jumpr:nt r31 + r6 = sub(r7,r6) + } + { + r7 = r6 + r5:4 = combine(#1,r3) + r6 = add(#1,lsr(r6,#1)) + p0 = cmp.gtu(r6,#4) + } + { + r5:4 = vaslw(r5:4,r7) + if (!p0) r6 = #3 + } + { + loop0(1f,r6) + r7:6 = vlsrw(r5:4,#1) + r1:0 = #0 + } + .falign +1: + { + r5:4 = vlsrw(r5:4,#2) + if (!p0.new) r0 = add(r0,r5) + if (!p0.new) r2 = sub(r2,r4) + p0 = cmp.gtu(r4,r2) + } + { + r7:6 = vlsrw(r7:6,#2) + if (!p0.new) r0 = add(r0,r7) + if (!p0.new) r2 = sub(r2,r6) + p0 = cmp.gtu(r6,r2) + }:endloop0 + { + if (!p0) r0 = add(r0,r7) + } + { + if (p3) r0 = sub(r1,r0) + jumpr r31 + } +SYM_FUNC_END(__hexagon_divsi3) |