[mirror_ubuntu-bionic-kernel.git] / arch / sparc / lib / udivdi3.S

/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.

This file is part of GNU CC.

GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

	.text
	.align 4
	.globl __udivdi3
__udivdi3:
	save %sp,-104,%sp
	mov %i3,%o3
	cmp %i2,0
	bne .LL40
	mov %i1,%i3
	cmp %o3,%i0
	bleu .LL41
	mov %i3,%o1
	! Inlined udiv_qrnnd
	mov	32,%g1
	subcc	%i0,%o3,%g0
1:	bcs	5f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	sub	%i0,%o3,%i0	! this kills msb of n
	addx	%i0,%i0,%i0	! so this cannot give carry
	subcc	%g1,1,%g1
2:	bne	1b
	 subcc	%i0,%o3,%g0
	bcs	3f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	b	3f
	 sub	%i0,%o3,%i0	! this kills msb of n
4:	sub	%i0,%o3,%i0
5:	addxcc	%i0,%i0,%i0
	bcc	2b
	 subcc	%g1,1,%g1
! Got carry from n.  Subtract next step to cancel this carry.
	bne	4b
	 addcc	%o1,%o1,%o1	! shift n1n0 and a 0-bit in lsb
	sub	%i0,%o3,%i0
3:	xnor	%o1,0,%o1
	! End of inline udiv_qrnnd
	b .LL45
	mov 0,%o2
.LL41:
	cmp %o3,0
	bne .LL77
	mov %i0,%o2
	mov 1,%o0
	mov 0,%o1
	wr %g0, 0, %y
	udiv %o0, %o1, %o0
	mov %o0,%o3
	mov %i0,%o2
.LL77:
	mov 0,%o4
	! Inlined udiv_qrnnd
	mov	32,%g1
	subcc	%o4,%o3,%g0
1:	bcs	5f
	 addxcc %o2,%o2,%o2	! shift n1n0 and a q-bit in lsb
	sub	%o4,%o3,%o4	! this kills msb of n
	addx	%o4,%o4,%o4	! so this cannot give carry
	subcc	%g1,1,%g1
2:	bne	1b
	 subcc	%o4,%o3,%g0
	bcs	3f
	 addxcc %o2,%o2,%o2	! shift n1n0 and a q-bit in lsb
	b	3f
	 sub	%o4,%o3,%o4	! this kills msb of n
4:	sub	%o4,%o3,%o4
5:	addxcc	%o4,%o4,%o4
	bcc	2b
	 subcc	%g1,1,%g1
! Got carry from n.  Subtract next step to cancel this carry.
	bne	4b
	 addcc	%o2,%o2,%o2	! shift n1n0 and a 0-bit in lsb
	sub	%o4,%o3,%o4
3:	xnor	%o2,0,%o2
	! End of inline udiv_qrnnd
	mov %o4,%i0
	mov %i3,%o1
	! Inlined udiv_qrnnd
	mov	32,%g1
	subcc	%i0,%o3,%g0
1:	bcs	5f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	sub	%i0,%o3,%i0	! this kills msb of n
	addx	%i0,%i0,%i0	! so this cannot give carry
	subcc	%g1,1,%g1
2:	bne	1b
	 subcc	%i0,%o3,%g0
	bcs	3f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	b	3f
	 sub	%i0,%o3,%i0	! this kills msb of n
4:	sub	%i0,%o3,%i0
5:	addxcc	%i0,%i0,%i0
	bcc	2b
	 subcc	%g1,1,%g1
! Got carry from n.  Subtract next step to cancel this carry.
	bne	4b
	 addcc	%o1,%o1,%o1	! shift n1n0 and a 0-bit in lsb
	sub	%i0,%o3,%i0
3:	xnor	%o1,0,%o1
	! End of inline udiv_qrnnd
	b .LL78
	mov %o1,%l1
.LL40:
	cmp %i2,%i0
	bleu .LL46
	sethi %hi(65535),%o0
	b .LL73
	mov 0,%o1
.LL46:
	or %o0,%lo(65535),%o0
	cmp %i2,%o0
	bgu .LL53
	mov %i2,%o1
	cmp %i2,256
	addx %g0,-1,%o0
	b .LL59
	and %o0,8,%o2
.LL53:
	sethi %hi(16777215),%o0
	or %o0,%lo(16777215),%o0
	cmp %o1,%o0
	bgu .LL59
	mov 24,%o2
	mov 16,%o2
.LL59:
	srl %o1,%o2,%o1
	sethi %hi(__clz_tab),%o0
	or %o0,%lo(__clz_tab),%o0
	ldub [%o1+%o0],%o0
	add %o0,%o2,%o0
	mov 32,%o1
	subcc %o1,%o0,%o2
	bne,a .LL67
	mov 32,%o0
	cmp %i0,%i2
	bgu .LL69
	cmp %i3,%o3
	blu .LL73
	mov 0,%o1
.LL69:
	b .LL73
	mov 1,%o1
.LL67:
	sub %o0,%o2,%o0
	sll %i2,%o2,%i2
	srl %o3,%o0,%o1
	or %i2,%o1,%i2
	sll %o3,%o2,%o3
	srl %i0,%o0,%o1
	sll %i0,%o2,%i0
	srl %i3,%o0,%o0
	or %i0,%o0,%i0
	sll %i3,%o2,%i3
	mov %i0,%o5
	mov %o1,%o4
	! Inlined udiv_qrnnd
	mov	32,%g1
	subcc	%o4,%i2,%g0
1:	bcs	5f
	 addxcc %o5,%o5,%o5	! shift n1n0 and a q-bit in lsb
	sub	%o4,%i2,%o4	! this kills msb of n
	addx	%o4,%o4,%o4	! so this cannot give carry
	subcc	%g1,1,%g1
2:	bne	1b
	 subcc	%o4,%i2,%g0
	bcs	3f
	 addxcc %o5,%o5,%o5	! shift n1n0 and a q-bit in lsb
	b	3f
	 sub	%o4,%i2,%o4	! this kills msb of n
4:	sub	%o4,%i2,%o4
5:	addxcc	%o4,%o4,%o4
	bcc	2b
	 subcc	%g1,1,%g1
! Got carry from n.  Subtract next step to cancel this carry.
	bne	4b
	 addcc	%o5,%o5,%o5	! shift n1n0 and a 0-bit in lsb
	sub	%o4,%i2,%o4
3:	xnor	%o5,0,%o5
	! End of inline udiv_qrnnd
	mov %o4,%i0
	mov %o5,%o1
	! Inlined umul_ppmm
	wr	%g0,%o1,%y	! SPARC has 0-3 delay insn after a wr
	sra	%o3,31,%g2	! Do not move this insn
	and	%o1,%g2,%g2	! Do not move this insn
	andcc	%g0,0,%g1	! Do not move this insn
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,%o3,%g1
	mulscc	%g1,0,%g1
	add	%g1,%g2,%o0
	rd	%y,%o2
	cmp %o0,%i0
	bgu,a .LL73
	add %o1,-1,%o1
	bne,a .LL45
	mov 0,%o2
	cmp %o2,%i3
	bleu .LL45
	mov 0,%o2
	add %o1,-1,%o1
.LL73:
	mov 0,%o2
.LL45:
	mov %o1,%l1
.LL78:
	mov %o2,%l0
	mov %l0,%i0
	mov %l1,%i1
	ret
	restore
Commit	Line	Data
1da177e4 LT	1	/* Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
	2
	3	This file is part of GNU CC.
	4
	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.
	9
	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.
	14
	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. */
	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
	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
1da177e4	63	mov 0,%o1
1b35a57b DM	64	wr %g0, 0, %y
1b35a57b DM	65	udiv %o0, %o1, %o0
1da177e4 LT	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