[deliverable/linux.git] / arch / sh / lib64 / sdivsi3.S

	.global	__sdivsi3
	.global	__sdivsi3_1
	.global	__sdivsi3_2
	.section	.text..SHmedia32,"ax"
	.align	2

	/* inputs: r4,r5 */
	/* clobbered: r1,r18,r19,r20,r21,r25,tr0 */
	/* result in r0 */
__sdivsi3:
__sdivsi3_1:
	ptb __div_table,tr0
	gettr tr0,r20

__sdivsi3_2:
	nsb r5, r1
	shlld r5, r1, r25    /* normalize; [-2 ..1, 1..2) in s2.62 */
	shari r25, 58, r21   /* extract 5(6) bit index (s2.4 with hole -1..1) */
	/* bubble */
	ldx.ub r20, r21, r19 /* u0.8 */
	shari r25, 32, r25   /* normalize to s2.30 */
	shlli r21, 1, r21
	muls.l r25, r19, r19 /* s2.38 */
	ldx.w r20, r21, r21  /* s2.14 */
	ptabs r18, tr0
	shari r19, 24, r19   /* truncate to s2.14 */
	sub r21, r19, r19    /* some 11 bit inverse in s1.14 */
	muls.l r19, r19, r21 /* u0.28 */
	sub r63, r1, r1
	addi r1, 92, r1
	muls.l r25, r21, r18 /* s2.58 */
	shlli r19, 45, r19   /* multiply by two and convert to s2.58 */
	/* bubble */
	sub r19, r18, r18
	shari r18, 28, r18   /* some 22 bit inverse in s1.30 */
	muls.l r18, r25, r0  /* s2.60 */
	muls.l r18, r4, r25 /* s32.30 */
	/* bubble */
	shari r0, 16, r19   /* s-16.44 */
	muls.l r19, r18, r19 /* s-16.74 */
	shari r25, 63, r0
	shari r4, 14, r18   /* s19.-14 */
	shari r19, 30, r19   /* s-16.44 */
	muls.l r19, r18, r19 /* s15.30 */
	xor r21, r0, r21    /* You could also use the constant 1 << 27. */
	add r21, r25, r21
	sub r21, r19, r21
	shard r21, r1, r21
	sub r21, r0, r0
	blink tr0, r63
	
/* This table has been generated by divtab.c .
Defects for bias -330:
   Max defect: 6.081536e-07 at -1.000000e+00
   Min defect: 2.849516e-08 at 1.030651e+00
   Max 2nd step defect: 9.606539e-12 at -1.000000e+00
   Min 2nd step defect: 0.000000e+00 at 0.000000e+00
   Defect at 1: 1.238659e-07
   Defect at -2: 1.061708e-07 */

	.balign 2
	.type	__div_table,@object
	.size	__div_table,128
/* negative division constants */
	.word	-16638
	.word	-17135
	.word	-17737
	.word	-18433
	.word	-19103
	.word	-19751
	.word	-20583
	.word	-21383
	.word	-22343
	.word	-23353
	.word	-24407
	.word	-25582
	.word	-26863
	.word	-28382
	.word	-29965
	.word	-31800
/* negative division factors */
	.byte	66
	.byte	70
	.byte	75
	.byte	81
	.byte	87
	.byte	93
	.byte	101
	.byte	109
	.byte	119
	.byte	130
	.byte	142
	.byte	156
	.byte	172
	.byte	192
	.byte	214
	.byte	241
	.skip 16
	.global	__div_table
__div_table:
	.skip 16
/* positive division factors */
	.byte	241
	.byte	214
	.byte	192
	.byte	172
	.byte	156
	.byte	142
	.byte	130
	.byte	119
	.byte	109
	.byte	101
	.byte	93
	.byte	87
	.byte	81
	.byte	75
	.byte	70
	.byte	66
/* positive division constants */
	.word	31801
	.word	29966
	.word	28383
	.word	26864
	.word	25583
	.word	24408
	.word	23354
	.word	22344
	.word	21384
	.word	20584
	.word	19752
	.word	19104
	.word	18434
	.word	17738
	.word	17136
	.word	16639
Commit	Line	Data
180ae203	1	.global __sdivsi3
1031a3a5 PM	2	.global __sdivsi3_1
1031a3a5 PM	3	.global __sdivsi3_2
180ae203 PM	4	.section .text..SHmedia32,"ax"
	5	.align 2
	6
	7	/* inputs: r4,r5 */
	8	/* clobbered: r1,r18,r19,r20,r21,r25,tr0 */
	9	/* result in r0 */
	10	__sdivsi3:
1031a3a5	11	__sdivsi3_1:
180ae203	12	ptb __div_table,tr0
1031a3a5	13	gettr tr0,r20
180ae203	14
1031a3a5	15	__sdivsi3_2:
180ae203 PM	16	nsb r5, r1
	17	shlld r5, r1, r25 /* normalize; [-2 ..1, 1..2) in s2.62 */
	18	shari r25, 58, r21 /* extract 5(6) bit index (s2.4 with hole -1..1) */
	19	/* bubble */
180ae203 PM	20	ldx.ub r20, r21, r19 /* u0.8 */
	21	shari r25, 32, r25 /* normalize to s2.30 */
	22	shlli r21, 1, r21
	23	muls.l r25, r19, r19 /* s2.38 */
	24	ldx.w r20, r21, r21 /* s2.14 */
	25	ptabs r18, tr0
	26	shari r19, 24, r19 /* truncate to s2.14 */
	27	sub r21, r19, r19 /* some 11 bit inverse in s1.14 */
	28	muls.l r19, r19, r21 /* u0.28 */
	29	sub r63, r1, r1
	30	addi r1, 92, r1
	31	muls.l r25, r21, r18 /* s2.58 */
	32	shlli r19, 45, r19 /* multiply by two and convert to s2.58 */
	33	/* bubble */
	34	sub r19, r18, r18
	35	shari r18, 28, r18 /* some 22 bit inverse in s1.30 */
	36	muls.l r18, r25, r0 /* s2.60 */
	37	muls.l r18, r4, r25 /* s32.30 */
	38	/* bubble */
	39	shari r0, 16, r19 /* s-16.44 */
	40	muls.l r19, r18, r19 /* s-16.74 */
	41	shari r25, 63, r0
	42	shari r4, 14, r18 /* s19.-14 */
	43	shari r19, 30, r19 /* s-16.44 */
	44	muls.l r19, r18, r19 /* s15.30 */
	45	xor r21, r0, r21 /* You could also use the constant 1 << 27. */
	46	add r21, r25, r21
	47	sub r21, r19, r21
	48	shard r21, r1, r21
	49	sub r21, r0, r0
	50	blink tr0, r63
	51
	52	/* This table has been generated by divtab.c .
	53	Defects for bias -330:
	54	Max defect: 6.081536e-07 at -1.000000e+00
	55	Min defect: 2.849516e-08 at 1.030651e+00
	56	Max 2nd step defect: 9.606539e-12 at -1.000000e+00
	57	Min 2nd step defect: 0.000000e+00 at 0.000000e+00
	58	Defect at 1: 1.238659e-07
	59	Defect at -2: 1.061708e-07 */
	60
	61	.balign 2
	62	.type __div_table,@object
	63	.size __div_table,128
	64	/* negative division constants */
	65	.word -16638
	66	.word -17135
	67	.word -17737
	68	.word -18433
	69	.word -19103
	70	.word -19751
	71	.word -20583
	72	.word -21383
	73	.word -22343
	74	.word -23353
	75	.word -24407
	76	.word -25582
	77	.word -26863
	78	.word -28382
	79	.word -29965
	80	.word -31800
	81	/* negative division factors */
	82	.byte 66
	83	.byte 70
84	.byte 75
85	.byte 81
86	.byte 87
87	.byte 93
88	.byte 101
89	.byte 109
90	.byte 119
91	.byte 130
92	.byte 142
93	.byte 156
94	.byte 172
95	.byte 192
96	.byte 214
97	.byte 241
98	.skip 16
99	.global __div_table
100	__div_table:
101	.skip 16
102	/* positive division factors */
103	.byte 241
104	.byte 214
105	.byte 192
106	.byte 172
107	.byte 156
108	.byte 142
109	.byte 130
110	.byte 119
111	.byte 109
112	.byte 101
113	.byte 93
114	.byte 87
115	.byte 81
116	.byte 75
117	.byte 70
118	.byte 66
119	/* positive division constants */
120	.word 31801
121	.word 29966
122	.word 28383
123	.word 26864
124	.word 25583
125	.word 24408
126	.word 23354
127	.word 22344
128	.word 21384
129	.word 20584
130	.word 19752
131	.word 19104
132	.word 18434
133	.word 17738
134	.word 17136
135	.word 16639