[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / sparc / lib / divdi3.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 __divdi3
__divdi3:
	save %sp,-104,%sp
	cmp %i0,0
	bge .LL40
	mov 0,%l4
	mov -1,%l4
	sub %g0,%i1,%o0
	mov %o0,%o5
	subcc %g0,%o0,%g0
	sub %g0,%i0,%o0
	subx %o0,0,%o4
	mov %o4,%i0
	mov %o5,%i1
.LL40:
	cmp %i2,0
	bge .LL84
	mov %i3,%o4
	xnor %g0,%l4,%l4
	sub %g0,%i3,%o0
	mov %o0,%o3
	subcc %g0,%o0,%g0
	sub %g0,%i2,%o0
	subx %o0,0,%o2
	mov %o2,%i2
	mov %o3,%i3
	mov %i3,%o4
.LL84:
	cmp %i2,0
	bne .LL45
	mov %i1,%i3
	cmp %o4,%i0
	bleu .LL46
	mov %i3,%o1
	mov	32,%g1
	subcc	%i0,%o4,%g0
1:	bcs	5f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	sub	%i0,%o4,%i0	! this kills msb of n
	addx	%i0,%i0,%i0	! so this cannot give carry
	subcc	%g1,1,%g1
2:	bne	1b
	 subcc	%i0,%o4,%g0
	bcs	3f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	b	3f
	 sub	%i0,%o4,%i0	! this kills msb of n
4:	sub	%i0,%o4,%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,%o4,%i0
3:	xnor	%o1,0,%o1
	b .LL50
	mov 0,%o2
.LL46:
	cmp %o4,0
	bne .LL85
	mov %i0,%o2
	mov 1,%o0
	mov 0,%o1
	wr %g0, 0, %y
	udiv %o0, %o1, %o0
	mov %o0,%o4
	mov %i0,%o2
.LL85:
	mov 0,%g3
	mov	32,%g1
	subcc	%g3,%o4,%g0
1:	bcs	5f
	 addxcc %o2,%o2,%o2	! shift n1n0 and a q-bit in lsb
	sub	%g3,%o4,%g3	! this kills msb of n
	addx	%g3,%g3,%g3	! so this cannot give carry
	subcc	%g1,1,%g1
2:	bne	1b
	 subcc	%g3,%o4,%g0
	bcs	3f
	 addxcc %o2,%o2,%o2	! shift n1n0 and a q-bit in lsb
	b	3f
	 sub	%g3,%o4,%g3	! this kills msb of n
4:	sub	%g3,%o4,%g3
5:	addxcc	%g3,%g3,%g3
	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	%g3,%o4,%g3
3:	xnor	%o2,0,%o2
	mov %g3,%i0
	mov %i3,%o1
	mov	32,%g1
	subcc	%i0,%o4,%g0
1:	bcs	5f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	sub	%i0,%o4,%i0	! this kills msb of n
	addx	%i0,%i0,%i0	! so this cannot give carry
	subcc	%g1,1,%g1
2:	bne	1b
	 subcc	%i0,%o4,%g0
	bcs	3f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	b	3f
	 sub	%i0,%o4,%i0	! this kills msb of n
4:	sub	%i0,%o4,%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,%o4,%i0
3:	xnor	%o1,0,%o1
	b .LL86
	mov %o1,%l1
.LL45:
	cmp %i2,%i0
	bleu .LL51
	sethi %hi(65535),%o0
	b .LL78
	mov 0,%o1
.LL51:
	or %o0,%lo(65535),%o0
	cmp %i2,%o0
	bgu .LL58
	mov %i2,%o1
	cmp %i2,256
	addx %g0,-1,%o0
	b .LL64
	and %o0,8,%o2
.LL58:
	sethi %hi(16777215),%o0
	or %o0,%lo(16777215),%o0
	cmp %i2,%o0
	bgu .LL64
	mov 24,%o2
	mov 16,%o2
.LL64:
	srl %o1,%o2,%o0
	sethi %hi(__clz_tab),%o1
	or %o1,%lo(__clz_tab),%o1
	ldub [%o0+%o1],%o0
	add %o0,%o2,%o0
	mov 32,%o1
	subcc %o1,%o0,%o3
	bne,a .LL72
	sub %o1,%o3,%o1
	cmp %i0,%i2
	bgu .LL74
	cmp %i3,%o4
	blu .LL78
	mov 0,%o1
.LL74:
	b .LL78
	mov 1,%o1
.LL72:
	sll %i2,%o3,%o2
	srl %o4,%o1,%o0
	or %o2,%o0,%i2
	sll %o4,%o3,%o4
	srl %i0,%o1,%o2
	sll %i0,%o3,%o0
	srl %i3,%o1,%o1
	or %o0,%o1,%i0
	sll %i3,%o3,%i3
	mov %i0,%o1
	mov	32,%g1
	subcc	%o2,%i2,%g0
1:	bcs	5f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	sub	%o2,%i2,%o2	! this kills msb of n
	addx	%o2,%o2,%o2	! so this cannot give carry
	subcc	%g1,1,%g1
2:	bne	1b
	 subcc	%o2,%i2,%g0
	bcs	3f
	 addxcc %o1,%o1,%o1	! shift n1n0 and a q-bit in lsb
	b	3f
	 sub	%o2,%i2,%o2	! this kills msb of n
4:	sub	%o2,%i2,%o2
5:	addxcc	%o2,%o2,%o2
	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	%o2,%i2,%o2
3:	xnor	%o1,0,%o1
	mov %o2,%i0
	wr	%g0,%o1,%y	! SPARC has 0-3 delay insn after a wr
	sra	%o4,31,%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,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,%o4,%g1
	mulscc	%g1,0,%g1
	add	%g1,%g2,%o0
	rd	%y,%o2
	cmp %o0,%i0
	bgu,a .LL78
	add %o1,-1,%o1
	bne,a .LL50
	mov 0,%o2
	cmp %o2,%i3
	bleu .LL50
	mov 0,%o2
	add %o1,-1,%o1
.LL78:
	mov 0,%o2
.LL50:
	mov %o1,%l1
.LL86:
	mov %o2,%l0
	mov %l0,%i0
	mov %l1,%i1
	cmp %l4,0
	be .LL81
	sub %g0,%i1,%o0
	mov %o0,%l3
	subcc %g0,%o0,%g0
	sub %g0,%i0,%o0
	subx %o0,0,%l2
	mov %l2,%i0
	mov %l3,%i1
.LL81:
	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
1da177e4 LT	20	.text
	21	.align 4
	22	.globl __divdi3
	23	__divdi3:
	24	save %sp,-104,%sp
	25	cmp %i0,0
	26	bge .LL40
	27	mov 0,%l4
	28	mov -1,%l4
	29	sub %g0,%i1,%o0
	30	mov %o0,%o5
	31	subcc %g0,%o0,%g0
	32	sub %g0,%i0,%o0
	33	subx %o0,0,%o4
	34	mov %o4,%i0
	35	mov %o5,%i1
	36	.LL40:
	37	cmp %i2,0
	38	bge .LL84
	39	mov %i3,%o4
	40	xnor %g0,%l4,%l4
	41	sub %g0,%i3,%o0
	42	mov %o0,%o3
	43	subcc %g0,%o0,%g0
	44	sub %g0,%i2,%o0
	45	subx %o0,0,%o2
	46	mov %o2,%i2
	47	mov %o3,%i3
	48	mov %i3,%o4
	49	.LL84:
	50	cmp %i2,0
	51	bne .LL45
	52	mov %i1,%i3
	53	cmp %o4,%i0
	54	bleu .LL46
	55	mov %i3,%o1
	56	mov 32,%g1
	57	subcc %i0,%o4,%g0
	58	1: bcs 5f
	59	addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
	60	sub %i0,%o4,%i0 ! this kills msb of n
	61	addx %i0,%i0,%i0 ! so this cannot give carry
	62	subcc %g1,1,%g1
	63	2: bne 1b
	64	subcc %i0,%o4,%g0
	65	bcs 3f
	66	addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
	67	b 3f
	68	sub %i0,%o4,%i0 ! this kills msb of n
	69	4: sub %i0,%o4,%i0
	70	5: addxcc %i0,%i0,%i0
	71	bcc 2b
	72	subcc %g1,1,%g1
	73	! Got carry from n. Subtract next step to cancel this carry.
	74	bne 4b
	75	addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
	76	sub %i0,%o4,%i0
	77	3: xnor %o1,0,%o1
	78	b .LL50
	79	mov 0,%o2
	80	.LL46:
	81	cmp %o4,0
	82	bne .LL85
	83	mov %i0,%o2
84	mov 1,%o0
1da177e4	85	mov 0,%o1
1b35a57b DM	86	wr %g0, 0, %y
1b35a57b DM	87	udiv %o0, %o1, %o0
1da177e4 LT	88	mov %o0,%o4
	89	mov %i0,%o2
	90	.LL85:
	91	mov 0,%g3
	92	mov 32,%g1
	93	subcc %g3,%o4,%g0
	94	1: bcs 5f
	95	addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
	96	sub %g3,%o4,%g3 ! this kills msb of n
	97	addx %g3,%g3,%g3 ! so this cannot give carry
	98	subcc %g1,1,%g1
	99	2: bne 1b
	100	subcc %g3,%o4,%g0
	101	bcs 3f
	102	addxcc %o2,%o2,%o2 ! shift n1n0 and a q-bit in lsb
	103	b 3f
	104	sub %g3,%o4,%g3 ! this kills msb of n
	105	4: sub %g3,%o4,%g3
	106	5: addxcc %g3,%g3,%g3
	107	bcc 2b
	108	subcc %g1,1,%g1
	109	! Got carry from n. Subtract next step to cancel this carry.
	110	bne 4b
	111	addcc %o2,%o2,%o2 ! shift n1n0 and a 0-bit in lsb
	112	sub %g3,%o4,%g3
	113	3: xnor %o2,0,%o2
	114	mov %g3,%i0
	115	mov %i3,%o1
	116	mov 32,%g1
	117	subcc %i0,%o4,%g0
	118	1: bcs 5f
	119	addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
	120	sub %i0,%o4,%i0 ! this kills msb of n
	121	addx %i0,%i0,%i0 ! so this cannot give carry
	122	subcc %g1,1,%g1
	123	2: bne 1b
	124	subcc %i0,%o4,%g0
	125	bcs 3f
	126	addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
	127	b 3f
	128	sub %i0,%o4,%i0 ! this kills msb of n
	129	4: sub %i0,%o4,%i0
	130	5: addxcc %i0,%i0,%i0
	131	bcc 2b
	132	subcc %g1,1,%g1
	133	! Got carry from n. Subtract next step to cancel this carry.
	134	bne 4b
	135	addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
	136	sub %i0,%o4,%i0
	137	3: xnor %o1,0,%o1
	138	b .LL86
	139	mov %o1,%l1
	140	.LL45:
	141	cmp %i2,%i0
	142	bleu .LL51
	143	sethi %hi(65535),%o0
	144	b .LL78
	145	mov 0,%o1
	146	.LL51:
	147	or %o0,%lo(65535),%o0
	148	cmp %i2,%o0
	149	bgu .LL58
	150	mov %i2,%o1
	151	cmp %i2,256
152	addx %g0,-1,%o0
153	b .LL64
154	and %o0,8,%o2
155	.LL58:
156	sethi %hi(16777215),%o0
157	or %o0,%lo(16777215),%o0
158	cmp %i2,%o0
159	bgu .LL64
160	mov 24,%o2
161	mov 16,%o2
162	.LL64:
163	srl %o1,%o2,%o0
164	sethi %hi(__clz_tab),%o1
165	or %o1,%lo(__clz_tab),%o1
166	ldub [%o0+%o1],%o0
167	add %o0,%o2,%o0
168	mov 32,%o1
169	subcc %o1,%o0,%o3
170	bne,a .LL72
171	sub %o1,%o3,%o1
172	cmp %i0,%i2
173	bgu .LL74
174	cmp %i3,%o4
175	blu .LL78
176	mov 0,%o1
177	.LL74:
178	b .LL78
179	mov 1,%o1
180	.LL72:
181	sll %i2,%o3,%o2
182	srl %o4,%o1,%o0
183	or %o2,%o0,%i2
184	sll %o4,%o3,%o4
185	srl %i0,%o1,%o2
186	sll %i0,%o3,%o0
187	srl %i3,%o1,%o1
188	or %o0,%o1,%i0
189	sll %i3,%o3,%i3
190	mov %i0,%o1
191	mov 32,%g1
192	subcc %o2,%i2,%g0
193	1: bcs 5f
194	addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
195	sub %o2,%i2,%o2 ! this kills msb of n
196	addx %o2,%o2,%o2 ! so this cannot give carry
197	subcc %g1,1,%g1
198	2: bne 1b
199	subcc %o2,%i2,%g0
200	bcs 3f
201	addxcc %o1,%o1,%o1 ! shift n1n0 and a q-bit in lsb
202	b 3f
203	sub %o2,%i2,%o2 ! this kills msb of n
204	4: sub %o2,%i2,%o2
205	5: addxcc %o2,%o2,%o2
206	bcc 2b
207	subcc %g1,1,%g1
208	! Got carry from n. Subtract next step to cancel this carry.
209	bne 4b
210	addcc %o1,%o1,%o1 ! shift n1n0 and a 0-bit in lsb
211	sub %o2,%i2,%o2
212	3: xnor %o1,0,%o1
213	mov %o2,%i0
214	wr %g0,%o1,%y ! SPARC has 0-3 delay insn after a wr
215	sra %o4,31,%g2 ! Do not move this insn
216	and %o1,%g2,%g2 ! Do not move this insn
217	andcc %g0,0,%g1 ! Do not move this insn
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,%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 %g1,0,%g1
251	add %g1,%g2,%o0
252	rd %y,%o2
253	cmp %o0,%i0
254	bgu,a .LL78
255	add %o1,-1,%o1
256	bne,a .LL50
257	mov 0,%o2
258	cmp %o2,%i3
259	bleu .LL50
260	mov 0,%o2
261	add %o1,-1,%o1
262	.LL78:
263	mov 0,%o2
264	.LL50:
265	mov %o1,%l1
266	.LL86:
267	mov %o2,%l0
268	mov %l0,%i0
269	mov %l1,%i1
270	cmp %l4,0
271	be .LL81
272	sub %g0,%i1,%o0
273	mov %o0,%l3
274	subcc %g0,%o0,%g0
275	sub %g0,%i0,%o0
276	subx %o0,0,%l2
277	mov %l2,%i0
278	mov %l3,%i1
279	.LL81:
280	ret
281	restore