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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
3
4This file is part of GNU CC.
5
6 */
7
8#include <asm/export.h>
9 .text
10 .align 4
11 .globl __divdi3
12__divdi3:
13 save %sp,-104,%sp
14 cmp %i0,0
15 bge .LL40
16 mov 0,%l4
17 mov -1,%l4
18 sub %g0,%i1,%o0
19 mov %o0,%o5
20 subcc %g0,%o0,%g0
21 sub %g0,%i0,%o0
22 subx %o0,0,%o4
23 mov %o4,%i0
24 mov %o5,%i1
25.LL40:
26 cmp %i2,0
27 bge .LL84
28 mov %i3,%o4
29 xnor %g0,%l4,%l4
30 sub %g0,%i3,%o0
31 mov %o0,%o3
32 subcc %g0,%o0,%g0
33 sub %g0,%i2,%o0
34 subx %o0,0,%o2
35 mov %o2,%i2
36 mov %o3,%i3
37 mov %i3,%o4
38.LL84:
39 cmp %i2,0
40 bne .LL45
41 mov %i1,%i3
42 cmp %o4,%i0
43 bleu .LL46
44 mov %i3,%o1
45 mov 32,%g1
46 subcc %i0,%o4,%g0
471: bcs 5f
48 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
49 sub %i0,%o4,%i0 ! this kills msb of n
50 addx %i0,%i0,%i0 ! so this cannot give carry
51 subcc %g1,1,%g1
522: bne 1b
53 subcc %i0,%o4,%g0
54 bcs 3f
55 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
56 b 3f
57 sub %i0,%o4,%i0 ! this kills msb of n
584: sub %i0,%o4,%i0
595: addxcc %i0,%i0,%i0
60 bcc 2b
61 subcc %g1,1,%g1
62! Got carry from n. Subtract next step to cancel this carry.
63 bne 4b
64 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
65 sub %i0,%o4,%i0
663: xnor %o1,0,%o1
67 b .LL50
68 mov 0,%o2
69.LL46:
70 cmp %o4,0
71 bne .LL85
72 mov %i0,%o2
73 mov 1,%o0
74 mov 0,%o1
75 wr %g0, 0, %y
76 udiv %o0, %o1, %o0
77 mov %o0,%o4
78 mov %i0,%o2
79.LL85:
80 mov 0,%g3
81 mov 32,%g1
82 subcc %g3,%o4,%g0
831: bcs 5f
84 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
85 sub %g3,%o4,%g3 ! this kills msb of n
86 addx %g3,%g3,%g3 ! so this cannot give carry
87 subcc %g1,1,%g1
882: bne 1b
89 subcc %g3,%o4,%g0
90 bcs 3f
91 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
92 b 3f
93 sub %g3,%o4,%g3 ! this kills msb of n
944: sub %g3,%o4,%g3
955: addxcc %g3,%g3,%g3
96 bcc 2b
97 subcc %g1,1,%g1
98! Got carry from n. Subtract next step to cancel this carry.
99 bne 4b
100 addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
101 sub %g3,%o4,%g3
1023: xnor %o2,0,%o2
103 mov %g3,%i0
104 mov %i3,%o1
105 mov 32,%g1
106 subcc %i0,%o4,%g0
1071: bcs 5f
108 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
109 sub %i0,%o4,%i0 ! this kills msb of n
110 addx %i0,%i0,%i0 ! so this cannot give carry
111 subcc %g1,1,%g1
1122: bne 1b
113 subcc %i0,%o4,%g0
114 bcs 3f
115 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
116 b 3f
117 sub %i0,%o4,%i0 ! this kills msb of n
1184: sub %i0,%o4,%i0
1195: addxcc %i0,%i0,%i0
120 bcc 2b
121 subcc %g1,1,%g1
122! Got carry from n. Subtract next step to cancel this carry.
123 bne 4b
124 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
125 sub %i0,%o4,%i0
1263: xnor %o1,0,%o1
127 b .LL86
128 mov %o1,%l1
129.LL45:
130 cmp %i2,%i0
131 bleu .LL51
132 sethi %hi(65535),%o0
133 b .LL78
134 mov 0,%o1
135.LL51:
136 or %o0,%lo(65535),%o0
137 cmp %i2,%o0
138 bgu .LL58
139 mov %i2,%o1
140 cmp %i2,256
141 addx %g0,-1,%o0
142 b .LL64
143 and %o0,8,%o2
144.LL58:
145 sethi %hi(16777215),%o0
146 or %o0,%lo(16777215),%o0
147 cmp %i2,%o0
148 bgu .LL64
149 mov 24,%o2
150 mov 16,%o2
151.LL64:
152 srl %o1,%o2,%o0
153 sethi %hi(__clz_tab),%o1
154 or %o1,%lo(__clz_tab),%o1
155 ldub [%o0+%o1],%o0
156 add %o0,%o2,%o0
157 mov 32,%o1
158 subcc %o1,%o0,%o3
159 bne,a .LL72
160 sub %o1,%o3,%o1
161 cmp %i0,%i2
162 bgu .LL74
163 cmp %i3,%o4
164 blu .LL78
165 mov 0,%o1
166.LL74:
167 b .LL78
168 mov 1,%o1
169.LL72:
170 sll %i2,%o3,%o2
171 srl %o4,%o1,%o0
172 or %o2,%o0,%i2
173 sll %o4,%o3,%o4
174 srl %i0,%o1,%o2
175 sll %i0,%o3,%o0
176 srl %i3,%o1,%o1
177 or %o0,%o1,%i0
178 sll %i3,%o3,%i3
179 mov %i0,%o1
180 mov 32,%g1
181 subcc %o2,%i2,%g0
1821: bcs 5f
183 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
184 sub %o2,%i2,%o2 ! this kills msb of n
185 addx %o2,%o2,%o2 ! so this cannot give carry
186 subcc %g1,1,%g1
1872: bne 1b
188 subcc %o2,%i2,%g0
189 bcs 3f
190 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
191 b 3f
192 sub %o2,%i2,%o2 ! this kills msb of n
1934: sub %o2,%i2,%o2
1945: addxcc %o2,%o2,%o2
195 bcc 2b
196 subcc %g1,1,%g1
197! Got carry from n. Subtract next step to cancel this carry.
198 bne 4b
199 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
200 sub %o2,%i2,%o2
2013: xnor %o1,0,%o1
202 mov %o2,%i0
203 wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
204 sra %o4,31,%g2 ! Do not move this insn
205 and %o1,%g2,%g2 ! Do not move this insn
206 andcc %g0,0,%g1 ! Do not move this insn
207 mulscc %g1,%o4,%g1
208 mulscc %g1,%o4,%g1
209 mulscc %g1,%o4,%g1
210 mulscc %g1,%o4,%g1
211 mulscc %g1,%o4,%g1
212 mulscc %g1,%o4,%g1
213 mulscc %g1,%o4,%g1
214 mulscc %g1,%o4,%g1
215 mulscc %g1,%o4,%g1
216 mulscc %g1,%o4,%g1
217 mulscc %g1,%o4,%g1
218 mulscc %g1,%o4,%g1
219 mulscc %g1,%o4,%g1
220 mulscc %g1,%o4,%g1
221 mulscc %g1,%o4,%g1
222 mulscc %g1,%o4,%g1
223 mulscc %g1,%o4,%g1
224 mulscc %g1,%o4,%g1
225 mulscc %g1,%o4,%g1
226 mulscc %g1,%o4,%g1
227 mulscc %g1,%o4,%g1
228 mulscc %g1,%o4,%g1
229 mulscc %g1,%o4,%g1
230 mulscc %g1,%o4,%g1
231 mulscc %g1,%o4,%g1
232 mulscc %g1,%o4,%g1
233 mulscc %g1,%o4,%g1
234 mulscc %g1,%o4,%g1
235 mulscc %g1,%o4,%g1
236 mulscc %g1,%o4,%g1
237 mulscc %g1,%o4,%g1
238 mulscc %g1,%o4,%g1
239 mulscc %g1,0,%g1
240 add %g1,%g2,%o0
241 rd %y,%o2
242 cmp %o0,%i0
243 bgu,a .LL78
244 add %o1,-1,%o1
245 bne,a .LL50
246 mov 0,%o2
247 cmp %o2,%i3
248 bleu .LL50
249 mov 0,%o2
250 add %o1,-1,%o1
251.LL78:
252 mov 0,%o2
253.LL50:
254 mov %o1,%l1
255.LL86:
256 mov %o2,%l0
257 mov %l0,%i0
258 mov %l1,%i1
259 cmp %l4,0
260 be .LL81
261 sub %g0,%i1,%o0
262 mov %o0,%l3
263 subcc %g0,%o0,%g0
264 sub %g0,%i0,%o0
265 subx %o0,0,%l2
266 mov %l2,%i0
267 mov %l3,%i1
268.LL81:
269 ret
270 restore
271EXPORT_SYMBOL(__divdi3)
1/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
2
3This file is part of GNU CC.
4
5GNU CC is free software; you can redistribute it and/or modify
6it under the terms of the GNU General Public License as published by
7the Free Software Foundation; either version 2, or (at your option)
8any later version.
9
10GNU CC is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with GNU CC; see the file COPYING. If not, write to
17the Free Software Foundation, 59 Temple Place - Suite 330,
18Boston, MA 02111-1307, USA. */
19
20#include <asm/export.h>
21 .text
22 .align 4
23 .globl __divdi3
24__divdi3:
25 save %sp,-104,%sp
26 cmp %i0,0
27 bge .LL40
28 mov 0,%l4
29 mov -1,%l4
30 sub %g0,%i1,%o0
31 mov %o0,%o5
32 subcc %g0,%o0,%g0
33 sub %g0,%i0,%o0
34 subx %o0,0,%o4
35 mov %o4,%i0
36 mov %o5,%i1
37.LL40:
38 cmp %i2,0
39 bge .LL84
40 mov %i3,%o4
41 xnor %g0,%l4,%l4
42 sub %g0,%i3,%o0
43 mov %o0,%o3
44 subcc %g0,%o0,%g0
45 sub %g0,%i2,%o0
46 subx %o0,0,%o2
47 mov %o2,%i2
48 mov %o3,%i3
49 mov %i3,%o4
50.LL84:
51 cmp %i2,0
52 bne .LL45
53 mov %i1,%i3
54 cmp %o4,%i0
55 bleu .LL46
56 mov %i3,%o1
57 mov 32,%g1
58 subcc %i0,%o4,%g0
591: bcs 5f
60 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
61 sub %i0,%o4,%i0 ! this kills msb of n
62 addx %i0,%i0,%i0 ! so this cannot give carry
63 subcc %g1,1,%g1
642: bne 1b
65 subcc %i0,%o4,%g0
66 bcs 3f
67 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
68 b 3f
69 sub %i0,%o4,%i0 ! this kills msb of n
704: sub %i0,%o4,%i0
715: addxcc %i0,%i0,%i0
72 bcc 2b
73 subcc %g1,1,%g1
74! Got carry from n. Subtract next step to cancel this carry.
75 bne 4b
76 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
77 sub %i0,%o4,%i0
783: xnor %o1,0,%o1
79 b .LL50
80 mov 0,%o2
81.LL46:
82 cmp %o4,0
83 bne .LL85
84 mov %i0,%o2
85 mov 1,%o0
86 mov 0,%o1
87 wr %g0, 0, %y
88 udiv %o0, %o1, %o0
89 mov %o0,%o4
90 mov %i0,%o2
91.LL85:
92 mov 0,%g3
93 mov 32,%g1
94 subcc %g3,%o4,%g0
951: bcs 5f
96 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
97 sub %g3,%o4,%g3 ! this kills msb of n
98 addx %g3,%g3,%g3 ! so this cannot give carry
99 subcc %g1,1,%g1
1002: bne 1b
101 subcc %g3,%o4,%g0
102 bcs 3f
103 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
104 b 3f
105 sub %g3,%o4,%g3 ! this kills msb of n
1064: sub %g3,%o4,%g3
1075: addxcc %g3,%g3,%g3
108 bcc 2b
109 subcc %g1,1,%g1
110! Got carry from n. Subtract next step to cancel this carry.
111 bne 4b
112 addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
113 sub %g3,%o4,%g3
1143: xnor %o2,0,%o2
115 mov %g3,%i0
116 mov %i3,%o1
117 mov 32,%g1
118 subcc %i0,%o4,%g0
1191: bcs 5f
120 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
121 sub %i0,%o4,%i0 ! this kills msb of n
122 addx %i0,%i0,%i0 ! so this cannot give carry
123 subcc %g1,1,%g1
1242: bne 1b
125 subcc %i0,%o4,%g0
126 bcs 3f
127 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
128 b 3f
129 sub %i0,%o4,%i0 ! this kills msb of n
1304: sub %i0,%o4,%i0
1315: addxcc %i0,%i0,%i0
132 bcc 2b
133 subcc %g1,1,%g1
134! Got carry from n. Subtract next step to cancel this carry.
135 bne 4b
136 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
137 sub %i0,%o4,%i0
1383: xnor %o1,0,%o1
139 b .LL86
140 mov %o1,%l1
141.LL45:
142 cmp %i2,%i0
143 bleu .LL51
144 sethi %hi(65535),%o0
145 b .LL78
146 mov 0,%o1
147.LL51:
148 or %o0,%lo(65535),%o0
149 cmp %i2,%o0
150 bgu .LL58
151 mov %i2,%o1
152 cmp %i2,256
153 addx %g0,-1,%o0
154 b .LL64
155 and %o0,8,%o2
156.LL58:
157 sethi %hi(16777215),%o0
158 or %o0,%lo(16777215),%o0
159 cmp %i2,%o0
160 bgu .LL64
161 mov 24,%o2
162 mov 16,%o2
163.LL64:
164 srl %o1,%o2,%o0
165 sethi %hi(__clz_tab),%o1
166 or %o1,%lo(__clz_tab),%o1
167 ldub [%o0+%o1],%o0
168 add %o0,%o2,%o0
169 mov 32,%o1
170 subcc %o1,%o0,%o3
171 bne,a .LL72
172 sub %o1,%o3,%o1
173 cmp %i0,%i2
174 bgu .LL74
175 cmp %i3,%o4
176 blu .LL78
177 mov 0,%o1
178.LL74:
179 b .LL78
180 mov 1,%o1
181.LL72:
182 sll %i2,%o3,%o2
183 srl %o4,%o1,%o0
184 or %o2,%o0,%i2
185 sll %o4,%o3,%o4
186 srl %i0,%o1,%o2
187 sll %i0,%o3,%o0
188 srl %i3,%o1,%o1
189 or %o0,%o1,%i0
190 sll %i3,%o3,%i3
191 mov %i0,%o1
192 mov 32,%g1
193 subcc %o2,%i2,%g0
1941: bcs 5f
195 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
196 sub %o2,%i2,%o2 ! this kills msb of n
197 addx %o2,%o2,%o2 ! so this cannot give carry
198 subcc %g1,1,%g1
1992: bne 1b
200 subcc %o2,%i2,%g0
201 bcs 3f
202 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
203 b 3f
204 sub %o2,%i2,%o2 ! this kills msb of n
2054: sub %o2,%i2,%o2
2065: addxcc %o2,%o2,%o2
207 bcc 2b
208 subcc %g1,1,%g1
209! Got carry from n. Subtract next step to cancel this carry.
210 bne 4b
211 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
212 sub %o2,%i2,%o2
2133: xnor %o1,0,%o1
214 mov %o2,%i0
215 wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
216 sra %o4,31,%g2 ! Do not move this insn
217 and %o1,%g2,%g2 ! Do not move this insn
218 andcc %g0,0,%g1 ! Do not move this insn
219 mulscc %g1,%o4,%g1
220 mulscc %g1,%o4,%g1
221 mulscc %g1,%o4,%g1
222 mulscc %g1,%o4,%g1
223 mulscc %g1,%o4,%g1
224 mulscc %g1,%o4,%g1
225 mulscc %g1,%o4,%g1
226 mulscc %g1,%o4,%g1
227 mulscc %g1,%o4,%g1
228 mulscc %g1,%o4,%g1
229 mulscc %g1,%o4,%g1
230 mulscc %g1,%o4,%g1
231 mulscc %g1,%o4,%g1
232 mulscc %g1,%o4,%g1
233 mulscc %g1,%o4,%g1
234 mulscc %g1,%o4,%g1
235 mulscc %g1,%o4,%g1
236 mulscc %g1,%o4,%g1
237 mulscc %g1,%o4,%g1
238 mulscc %g1,%o4,%g1
239 mulscc %g1,%o4,%g1
240 mulscc %g1,%o4,%g1
241 mulscc %g1,%o4,%g1
242 mulscc %g1,%o4,%g1
243 mulscc %g1,%o4,%g1
244 mulscc %g1,%o4,%g1
245 mulscc %g1,%o4,%g1
246 mulscc %g1,%o4,%g1
247 mulscc %g1,%o4,%g1
248 mulscc %g1,%o4,%g1
249 mulscc %g1,%o4,%g1
250 mulscc %g1,%o4,%g1
251 mulscc %g1,0,%g1
252 add %g1,%g2,%o0
253 rd %y,%o2
254 cmp %o0,%i0
255 bgu,a .LL78
256 add %o1,-1,%o1
257 bne,a .LL50
258 mov 0,%o2
259 cmp %o2,%i3
260 bleu .LL50
261 mov 0,%o2
262 add %o1,-1,%o1
263.LL78:
264 mov 0,%o2
265.LL50:
266 mov %o1,%l1
267.LL86:
268 mov %o2,%l0
269 mov %l0,%i0
270 mov %l1,%i1
271 cmp %l4,0
272 be .LL81
273 sub %g0,%i1,%o0
274 mov %o0,%l3
275 subcc %g0,%o0,%g0
276 sub %g0,%i0,%o0
277 subx %o0,0,%l2
278 mov %l2,%i0
279 mov %l3,%i1
280.LL81:
281 ret
282 restore
283EXPORT_SYMBOL(__divdi3)