| blob | 24e0a355e2e8c59bbd05c80f093c1258a1133fdd |
1 /* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
3 This file is part of GNU CC.
5 GNU CC is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
10 GNU CC is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNU CC; see the file COPYING. If not, write to
17 the Free Software Foundation, 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 .text
21 .align 4
22 .globl __udivdi3
23 __udivdi3:
24 save %sp,-104,%sp
25 mov %i3,%o3
26 cmp %i2,0
27 bne .LL40
28 mov %i1,%i3
29 cmp %o3,%i0
30 bleu .LL41
31 mov %i3,%o1
32 ! Inlined udiv_qrnnd
33 mov 32,%g1
34 subcc %i0,%o3,%g0
35 1: bcs 5f
36 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
37 sub %i0,%o3,%i0 ! this kills msb of n
38 addx %i0,%i0,%i0 ! so this cannot give carry
39 subcc %g1,1,%g1
40 2: bne 1b
41 subcc %i0,%o3,%g0
42 bcs 3f
43 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
44 b 3f
45 sub %i0,%o3,%i0 ! this kills msb of n
46 4: sub %i0,%o3,%i0
47 5: addxcc %i0,%i0,%i0
48 bcc 2b
49 subcc %g1,1,%g1
50 ! Got carry from n. Subtract next step to cancel this carry.
51 bne 4b
52 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
53 sub %i0,%o3,%i0
54 3: xnor %o1,0,%o1
55 ! End of inline udiv_qrnnd
56 b .LL45
57 mov 0,%o2
58 .LL41:
59 cmp %o3,0
60 bne .LL77
61 mov %i0,%o2
62 mov 1,%o0
63 mov 0,%o1
64 wr %g0, 0, %y
65 udiv %o0, %o1, %o0
66 mov %o0,%o3
67 mov %i0,%o2
68 .LL77:
69 mov 0,%o4
70 ! Inlined udiv_qrnnd
71 mov 32,%g1
72 subcc %o4,%o3,%g0
73 1: bcs 5f
74 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
75 sub %o4,%o3,%o4 ! this kills msb of n
76 addx %o4,%o4,%o4 ! so this cannot give carry
77 subcc %g1,1,%g1
78 2: bne 1b
79 subcc %o4,%o3,%g0
80 bcs 3f
81 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
82 b 3f
83 sub %o4,%o3,%o4 ! this kills msb of n
84 4: sub %o4,%o3,%o4
85 5: addxcc %o4,%o4,%o4
86 bcc 2b
87 subcc %g1,1,%g1
88 ! Got carry from n. Subtract next step to cancel this carry.
89 bne 4b
90 addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
91 sub %o4,%o3,%o4
92 3: xnor %o2,0,%o2
93 ! End of inline udiv_qrnnd
94 mov %o4,%i0
95 mov %i3,%o1
96 ! Inlined udiv_qrnnd
97 mov 32,%g1
98 subcc %i0,%o3,%g0
99 1: bcs 5f
100 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
101 sub %i0,%o3,%i0 ! this kills msb of n
102 addx %i0,%i0,%i0 ! so this cannot give carry
103 subcc %g1,1,%g1
104 2: bne 1b
105 subcc %i0,%o3,%g0
106 bcs 3f
107 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
108 b 3f
109 sub %i0,%o3,%i0 ! this kills msb of n
110 4: sub %i0,%o3,%i0
111 5: addxcc %i0,%i0,%i0
112 bcc 2b
113 subcc %g1,1,%g1
114 ! Got carry from n. Subtract next step to cancel this carry.
115 bne 4b
116 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
117 sub %i0,%o3,%i0
118 3: xnor %o1,0,%o1
119 ! End of inline udiv_qrnnd
120 b .LL78
121 mov %o1,%l1
122 .LL40:
123 cmp %i2,%i0
124 bleu .LL46
125 sethi %hi(65535),%o0
126 b .LL73
127 mov 0,%o1
128 .LL46:
129 or %o0,%lo(65535),%o0
130 cmp %i2,%o0
131 bgu .LL53
132 mov %i2,%o1
133 cmp %i2,256
134 addx %g0,-1,%o0
135 b .LL59
136 and %o0,8,%o2
137 .LL53:
138 sethi %hi(16777215),%o0
139 or %o0,%lo(16777215),%o0
140 cmp %o1,%o0
141 bgu .LL59
142 mov 24,%o2
143 mov 16,%o2
144 .LL59:
145 srl %o1,%o2,%o1
146 sethi %hi(__clz_tab),%o0
147 or %o0,%lo(__clz_tab),%o0
148 ldub [%o1+%o0],%o0
149 add %o0,%o2,%o0
150 mov 32,%o1
151 subcc %o1,%o0,%o2
152 bne,a .LL67
153 mov 32,%o0
154 cmp %i0,%i2
155 bgu .LL69
156 cmp %i3,%o3
157 blu .LL73
158 mov 0,%o1
159 .LL69:
160 b .LL73
161 mov 1,%o1
162 .LL67:
163 sub %o0,%o2,%o0
164 sll %i2,%o2,%i2
165 srl %o3,%o0,%o1
166 or %i2,%o1,%i2
167 sll %o3,%o2,%o3
168 srl %i0,%o0,%o1
169 sll %i0,%o2,%i0
170 srl %i3,%o0,%o0
171 or %i0,%o0,%i0
172 sll %i3,%o2,%i3
173 mov %i0,%o5
174 mov %o1,%o4
175 ! Inlined udiv_qrnnd
176 mov 32,%g1
177 subcc %o4,%i2,%g0
178 1: bcs 5f
179 addxcc %o5,%o5,%o5 ! shift n1n0 and a q-bit in lsb
180 sub %o4,%i2,%o4 ! this kills msb of n
181 addx %o4,%o4,%o4 ! so this cannot give carry
182 subcc %g1,1,%g1
183 2: bne 1b
184 subcc %o4,%i2,%g0
185 bcs 3f
186 addxcc %o5,%o5,%o5 ! shift n1n0 and a q-bit in lsb
187 b 3f
188 sub %o4,%i2,%o4 ! this kills msb of n
189 4: sub %o4,%i2,%o4
190 5: addxcc %o4,%o4,%o4
191 bcc 2b
192 subcc %g1,1,%g1
193 ! Got carry from n. Subtract next step to cancel this carry.
194 bne 4b
195 addcc %o5,%o5,%o5 ! shift n1n0 and a 0-bit in lsb
196 sub %o4,%i2,%o4
197 3: xnor %o5,0,%o5
198 ! End of inline udiv_qrnnd
199 mov %o4,%i0
200 mov %o5,%o1
201 ! Inlined umul_ppmm
202 wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
203 sra %o3,31,%g2 ! Do not move this insn
204 and %o1,%g2,%g2 ! Do not move this insn
205 andcc %g0,0,%g1 ! Do not move this insn
206 mulscc %g1,%o3,%g1
207 mulscc %g1,%o3,%g1
208 mulscc %g1,%o3,%g1
209 mulscc %g1,%o3,%g1
210 mulscc %g1,%o3,%g1
211 mulscc %g1,%o3,%g1
212 mulscc %g1,%o3,%g1
213 mulscc %g1,%o3,%g1
214 mulscc %g1,%o3,%g1
215 mulscc %g1,%o3,%g1
216 mulscc %g1,%o3,%g1
217 mulscc %g1,%o3,%g1
218 mulscc %g1,%o3,%g1
219 mulscc %g1,%o3,%g1
220 mulscc %g1,%o3,%g1
221 mulscc %g1,%o3,%g1
222 mulscc %g1,%o3,%g1
223 mulscc %g1,%o3,%g1
224 mulscc %g1,%o3,%g1
225 mulscc %g1,%o3,%g1
226 mulscc %g1,%o3,%g1
227 mulscc %g1,%o3,%g1
228 mulscc %g1,%o3,%g1
229 mulscc %g1,%o3,%g1
230 mulscc %g1,%o3,%g1
231 mulscc %g1,%o3,%g1
232 mulscc %g1,%o3,%g1
233 mulscc %g1,%o3,%g1
234 mulscc %g1,%o3,%g1
235 mulscc %g1,%o3,%g1
236 mulscc %g1,%o3,%g1
237 mulscc %g1,%o3,%g1
238 mulscc %g1,0,%g1
239 add %g1,%g2,%o0
240 rd %y,%o2
241 cmp %o0,%i0
242 bgu,a .LL73
243 add %o1,-1,%o1
244 bne,a .LL45
245 mov 0,%o2
246 cmp %o2,%i3
247 bleu .LL45
248 mov 0,%o2
249 add %o1,-1,%o1
250 .LL73:
251 mov 0,%o2
252 .LL45:
253 mov %o1,%l1
254 .LL78:
255 mov %o2,%l0
256 mov %l0,%i0
257 mov %l1,%i1
258 ret
259 restore