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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc/lib/udivdi3.S
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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diff --git a/arch/sparc/lib/udivdi3.S b/arch/sparc/lib/udivdi3.S
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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 .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
351: 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
402: 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
464: sub %i0,%o3,%i0
475: 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
543: 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 call .udiv,0
64 mov 0,%o1
65 mov %o0,%o3
66 mov %i0,%o2
67.LL77:
68 mov 0,%o4
69 ! Inlined udiv_qrnnd
70 mov 32,%g1
71 subcc %o4,%o3,%g0
721: bcs 5f
73 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
74 sub %o4,%o3,%o4 ! this kills msb of n
75 addx %o4,%o4,%o4 ! so this cannot give carry
76 subcc %g1,1,%g1
772: bne 1b
78 subcc %o4,%o3,%g0
79 bcs 3f
80 addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
81 b 3f
82 sub %o4,%o3,%o4 ! this kills msb of n
834: sub %o4,%o3,%o4
845: addxcc %o4,%o4,%o4
85 bcc 2b
86 subcc %g1,1,%g1
87! Got carry from n. Subtract next step to cancel this carry.
88 bne 4b
89 addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
90 sub %o4,%o3,%o4
913: xnor %o2,0,%o2
92 ! End of inline udiv_qrnnd
93 mov %o4,%i0
94 mov %i3,%o1
95 ! Inlined udiv_qrnnd
96 mov 32,%g1
97 subcc %i0,%o3,%g0
981: bcs 5f
99 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
100 sub %i0,%o3,%i0 ! this kills msb of n
101 addx %i0,%i0,%i0 ! so this cannot give carry
102 subcc %g1,1,%g1
1032: bne 1b
104 subcc %i0,%o3,%g0
105 bcs 3f
106 addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
107 b 3f
108 sub %i0,%o3,%i0 ! this kills msb of n
1094: sub %i0,%o3,%i0
1105: addxcc %i0,%i0,%i0
111 bcc 2b
112 subcc %g1,1,%g1
113! Got carry from n. Subtract next step to cancel this carry.
114 bne 4b
115 addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
116 sub %i0,%o3,%i0
1173: xnor %o1,0,%o1
118 ! End of inline udiv_qrnnd
119 b .LL78
120 mov %o1,%l1
121.LL40:
122 cmp %i2,%i0
123 bleu .LL46
124 sethi %hi(65535),%o0
125 b .LL73
126 mov 0,%o1
127.LL46:
128 or %o0,%lo(65535),%o0
129 cmp %i2,%o0
130 bgu .LL53
131 mov %i2,%o1
132 cmp %i2,256
133 addx %g0,-1,%o0
134 b .LL59
135 and %o0,8,%o2
136.LL53:
137 sethi %hi(16777215),%o0
138 or %o0,%lo(16777215),%o0
139 cmp %o1,%o0
140 bgu .LL59
141 mov 24,%o2
142 mov 16,%o2
143.LL59:
144 srl %o1,%o2,%o1
145 sethi %hi(__clz_tab),%o0
146 or %o0,%lo(__clz_tab),%o0
147 ldub [%o1+%o0],%o0
148 add %o0,%o2,%o0
149 mov 32,%o1
150 subcc %o1,%o0,%o2
151 bne,a .LL67
152 mov 32,%o0
153 cmp %i0,%i2
154 bgu .LL69
155 cmp %i3,%o3
156 blu .LL73
157 mov 0,%o1
158.LL69:
159 b .LL73
160 mov 1,%o1
161.LL67:
162 sub %o0,%o2,%o0
163 sll %i2,%o2,%i2
164 srl %o3,%o0,%o1
165 or %i2,%o1,%i2
166 sll %o3,%o2,%o3
167 srl %i0,%o0,%o1
168 sll %i0,%o2,%i0
169 srl %i3,%o0,%o0
170 or %i0,%o0,%i0
171 sll %i3,%o2,%i3
172 mov %i0,%o5
173 mov %o1,%o4
174 ! Inlined udiv_qrnnd
175 mov 32,%g1
176 subcc %o4,%i2,%g0
1771: bcs 5f
178 addxcc %o5,%o5,%o5 ! shift n1n0 and a q-bit in lsb
179 sub %o4,%i2,%o4 ! this kills msb of n
180 addx %o4,%o4,%o4 ! so this cannot give carry
181 subcc %g1,1,%g1
1822: bne 1b
183 subcc %o4,%i2,%g0
184 bcs 3f
185 addxcc %o5,%o5,%o5 ! shift n1n0 and a q-bit in lsb
186 b 3f
187 sub %o4,%i2,%o4 ! this kills msb of n
1884: sub %o4,%i2,%o4
1895: addxcc %o4,%o4,%o4
190 bcc 2b
191 subcc %g1,1,%g1
192! Got carry from n. Subtract next step to cancel this carry.
193 bne 4b
194 addcc %o5,%o5,%o5 ! shift n1n0 and a 0-bit in lsb
195 sub %o4,%i2,%o4
1963: xnor %o5,0,%o5
197 ! End of inline udiv_qrnnd
198 mov %o4,%i0
199 mov %o5,%o1
200 ! Inlined umul_ppmm
201 wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
202 sra %o3,31,%g2 ! Do not move this insn
203 and %o1,%g2,%g2 ! Do not move this insn
204 andcc %g0,0,%g1 ! Do not move this insn
205 mulscc %g1,%o3,%g1
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 %g1,0,%g1
238 add %g1,%g2,%o0
239 rd %y,%o2
240 cmp %o0,%i0
241 bgu,a .LL73
242 add %o1,-1,%o1
243 bne,a .LL45
244 mov 0,%o2
245 cmp %o2,%i3
246 bleu .LL45
247 mov 0,%o2
248 add %o1,-1,%o1
249.LL73:
250 mov 0,%o2
251.LL45:
252 mov %o1,%l1
253.LL78:
254 mov %o2,%l0
255 mov %l0,%i0
256 mov %l1,%i1
257 ret
258 restore
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-19 19:03:20 -0500