summaryrefslogtreecommitdiffstats
path: root/arch/arm64/include/asm/fpsimdmacros.h
blob: a2daf12930284183122bd14da5a0c2b441c91034 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
 * FP/SIMD state saving and restoring macros
 *
 * Copyright (C) 2012 ARM Ltd.
 * Author: Catalin Marinas <catalin.marinas@arm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

.macro fpsimd_save state, tmpnr
	stp	q0, q1, [\state, #16 * 0]
	stp	q2, q3, [\state, #16 * 2]
	stp	q4, q5, [\state, #16 * 4]
	stp	q6, q7, [\state, #16 * 6]
	stp	q8, q9, [\state, #16 * 8]
	stp	q10, q11, [\state, #16 * 10]
	stp	q12, q13, [\state, #16 * 12]
	stp	q14, q15, [\state, #16 * 14]
	stp	q16, q17, [\state, #16 * 16]
	stp	q18, q19, [\state, #16 * 18]
	stp	q20, q21, [\state, #16 * 20]
	stp	q22, q23, [\state, #16 * 22]
	stp	q24, q25, [\state, #16 * 24]
	stp	q26, q27, [\state, #16 * 26]
	stp	q28, q29, [\state, #16 * 28]
	stp	q30, q31, [\state, #16 * 30]!
	mrs	x\tmpnr, fpsr
	str	w\tmpnr, [\state, #16 * 2]
	mrs	x\tmpnr, fpcr
	str	w\tmpnr, [\state, #16 * 2 + 4]
.endm

.macro fpsimd_restore_fpcr state, tmp
	/*
	 * Writes to fpcr may be self-synchronising, so avoid restoring
	 * the register if it hasn't changed.
	 */
	mrs	\tmp, fpcr
	cmp	\tmp, \state
	b.eq	9999f
	msr	fpcr, \state
9999:
.endm

/* Clobbers \state */
.macro fpsimd_restore state, tmpnr
	ldp	q0, q1, [\state, #16 * 0]
	ldp	q2, q3, [\state, #16 * 2]
	ldp	q4, q5, [\state, #16 * 4]
	ldp	q6, q7, [\state, #16 * 6]
	ldp	q8, q9, [\state, #16 * 8]
	ldp	q10, q11, [\state, #16 * 10]
	ldp	q12, q13, [\state, #16 * 12]
	ldp	q14, q15, [\state, #16 * 14]
	ldp	q16, q17, [\state, #16 * 16]
	ldp	q18, q19, [\state, #16 * 18]
	ldp	q20, q21, [\state, #16 * 20]
	ldp	q22, q23, [\state, #16 * 22]
	ldp	q24, q25, [\state, #16 * 24]
	ldp	q26, q27, [\state, #16 * 26]
	ldp	q28, q29, [\state, #16 * 28]
	ldp	q30, q31, [\state, #16 * 30]!
	ldr	w\tmpnr, [\state, #16 * 2]
	msr	fpsr, x\tmpnr
	ldr	w\tmpnr, [\state, #16 * 2 + 4]
	fpsimd_restore_fpcr x\tmpnr, \state
.endm

.macro fpsimd_save_partial state, numnr, tmpnr1, tmpnr2
	mrs	x\tmpnr1, fpsr
	str	w\numnr, [\state, #8]
	mrs	x\tmpnr2, fpcr
	stp	w\tmpnr1, w\tmpnr2, [\state]
	adr	x\tmpnr1, 0f
	add	\state, \state, x\numnr, lsl #4
	sub	x\tmpnr1, x\tmpnr1, x\numnr, lsl #1
	br	x\tmpnr1
	stp	q30, q31, [\state, #-16 * 30 - 16]
	stp	q28, q29, [\state, #-16 * 28 - 16]
	stp	q26, q27, [\state, #-16 * 26 - 16]
	stp	q24, q25, [\state, #-16 * 24 - 16]
	stp	q22, q23, [\state, #-16 * 22 - 16]
	stp	q20, q21, [\state, #-16 * 20 - 16]
	stp	q18, q19, [\state, #-16 * 18 - 16]
	stp	q16, q17, [\state, #-16 * 16 - 16]
	stp	q14, q15, [\state, #-16 * 14 - 16]
	stp	q12, q13, [\state, #-16 * 12 - 16]
	stp	q10, q11, [\state, #-16 * 10 - 16]
	stp	q8, q9, [\state, #-16 * 8 - 16]
	stp	q6, q7, [\state, #-16 * 6 - 16]
	stp	q4, q5, [\state, #-16 * 4 - 16]
	stp	q2, q3, [\state, #-16 * 2 - 16]
	stp	q0, q1, [\state, #-16 * 0 - 16]
0:
.endm

.macro fpsimd_restore_partial state, tmpnr1, tmpnr2
	ldp	w\tmpnr1, w\tmpnr2, [\state]
	msr	fpsr, x\tmpnr1
	fpsimd_restore_fpcr x\tmpnr2, x\tmpnr1
	adr	x\tmpnr1, 0f
	ldr	w\tmpnr2, [\state, #8]
	add	\state, \state, x\tmpnr2, lsl #4
	sub	x\tmpnr1, x\tmpnr1, x\tmpnr2, lsl #1
	br	x\tmpnr1
	ldp	q30, q31, [\state, #-16 * 30 - 16]
	ldp	q28, q29, [\state, #-16 * 28 - 16]
	ldp	q26, q27, [\state, #-16 * 26 - 16]
	ldp	q24, q25, [\state, #-16 * 24 - 16]
	ldp	q22, q23, [\state, #-16 * 22 - 16]
	ldp	q20, q21, [\state, #-16 * 20 - 16]
	ldp	q18, q19, [\state, #-16 * 18 - 16]
	ldp	q16, q17, [\state, #-16 * 16 - 16]
	ldp	q14, q15, [\state, #-16 * 14 - 16]
	ldp	q12, q13, [\state, #-16 * 12 - 16]
	ldp	q10, q11, [\state, #-16 * 10 - 16]
	ldp	q8, q9, [\state, #-16 * 8 - 16]
	ldp	q6, q7, [\state, #-16 * 6 - 16]
	ldp	q4, q5, [\state, #-16 * 4 - 16]
	ldp	q2, q3, [\state, #-16 * 2 - 16]
	ldp	q0, q1, [\state, #-16 * 0 - 16]
0:
.endm
OpenPOWER on IntegriCloud