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gerrit-public.fairphone.software / kernel / msm-5.4 / 01127f1ead4cef75e2b9b309e0ea95418ccd53bd / . / tools / testing / selftests / powerpc / math / vmx_asm.S
blob: 4ce64212d5e0c43fbbfa4522775a9a7c22006992 [file] [log] [blame]
Cyril Bur01127f12016-02-29 17:53:43 +1100[diff] [blame^]1/*
2 * Copyright 2015, Cyril Bur, IBM Corp.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9
10#include "../basic_asm.h"
11
12#define PUSH_VMX(pos,reg) \
13 li reg,pos; \
14 stvx v20,reg,sp; \
15 addi reg,reg,16; \
16 stvx v21,reg,sp; \
17 addi reg,reg,16; \
18 stvx v22,reg,sp; \
19 addi reg,reg,16; \
20 stvx v23,reg,sp; \
21 addi reg,reg,16; \
22 stvx v24,reg,sp; \
23 addi reg,reg,16; \
24 stvx v25,reg,sp; \
25 addi reg,reg,16; \
26 stvx v26,reg,sp; \
27 addi reg,reg,16; \
28 stvx v27,reg,sp; \
29 addi reg,reg,16; \
30 stvx v28,reg,sp; \
31 addi reg,reg,16; \
32 stvx v29,reg,sp; \
33 addi reg,reg,16; \
34 stvx v30,reg,sp; \
35 addi reg,reg,16; \
36 stvx v31,reg,sp;
37
38#define POP_VMX(pos,reg) \
39 li reg,pos; \
40 lvx v20,reg,sp; \
41 addi reg,reg,16; \
42 lvx v21,reg,sp; \
43 addi reg,reg,16; \
44 lvx v22,reg,sp; \
45 addi reg,reg,16; \
46 lvx v23,reg,sp; \
47 addi reg,reg,16; \
48 lvx v24,reg,sp; \
49 addi reg,reg,16; \
50 lvx v25,reg,sp; \
51 addi reg,reg,16; \
52 lvx v26,reg,sp; \
53 addi reg,reg,16; \
54 lvx v27,reg,sp; \
55 addi reg,reg,16; \
56 lvx v28,reg,sp; \
57 addi reg,reg,16; \
58 lvx v29,reg,sp; \
59 addi reg,reg,16; \
60 lvx v30,reg,sp; \
61 addi reg,reg,16; \
62 lvx v31,reg,sp;
63
64# Carefull this will 'clobber' vmx (by design)
65# Don't call this from C
66FUNC_START(load_vmx)
67 li r5,0
68 lvx v20,r5,r3
69 addi r5,r5,16
70 lvx v21,r5,r3
71 addi r5,r5,16
72 lvx v22,r5,r3
73 addi r5,r5,16
74 lvx v23,r5,r3
75 addi r5,r5,16
76 lvx v24,r5,r3
77 addi r5,r5,16
78 lvx v25,r5,r3
79 addi r5,r5,16
80 lvx v26,r5,r3
81 addi r5,r5,16
82 lvx v27,r5,r3
83 addi r5,r5,16
84 lvx v28,r5,r3
85 addi r5,r5,16
86 lvx v29,r5,r3
87 addi r5,r5,16
88 lvx v30,r5,r3
89 addi r5,r5,16
90 lvx v31,r5,r3
91 blr
92FUNC_END(load_vmx)
93
94# Should be safe from C, only touches r4, r5 and v0,v1,v2
95FUNC_START(check_vmx)
96 PUSH_BASIC_STACK(16)
97 mr r4,r3
98 li r3,1 # assume a bad result
99 li r5,0
100 lvx v0,r5,r4
101 vcmpequd. v1,v0,v20
102 vmr v2,v1
103
104 addi r5,r5,16
105 lvx v0,r5,r4
106 vcmpequd. v1,v0,v21
107 vand v2,v2,v1
108
109 addi r5,r5,16
110 lvx v0,r5,r4
111 vcmpequd. v1,v0,v22
112 vand v2,v2,v1
113
114 addi r5,r5,16
115 lvx v0,r5,r4
116 vcmpequd. v1,v0,v23
117 vand v2,v2,v1
118
119 addi r5,r5,16
120 lvx v0,r5,r4
121 vcmpequd. v1,v0,v24
122 vand v2,v2,v1
123
124 addi r5,r5,16
125 lvx v0,r5,r4
126 vcmpequd. v1,v0,v25
127 vand v2,v2,v1
128
129 addi r5,r5,16
130 lvx v0,r5,r4
131 vcmpequd. v1,v0,v26
132 vand v2,v2,v1
133
134 addi r5,r5,16
135 lvx v0,r5,r4
136 vcmpequd. v1,v0,v27
137 vand v2,v2,v1
138
139 addi r5,r5,16
140 lvx v0,r5,r4
141 vcmpequd. v1,v0,v28
142 vand v2,v2,v1
143
144 addi r5,r5,16
145 lvx v0,r5,r4
146 vcmpequd. v1,v0,v29
147 vand v2,v2,v1
148
149 addi r5,r5,16
150 lvx v0,r5,r4
151 vcmpequd. v1,v0,v30
152 vand v2,v2,v1
153
154 addi r5,r5,16
155 lvx v0,r5,r4
156 vcmpequd. v1,v0,v31
157 vand v2,v2,v1
158
159 li r5,STACK_FRAME_LOCAL(0,0)
160 stvx v2,r5,sp
161 ldx r0,r5,sp
162 cmpdi r0,0xffffffffffffffff
163 bne 1f
164 li r3,0
1651: POP_BASIC_STACK(16)
166 blr
167FUNC_END(check_vmx)
168
169# Safe from C
170FUNC_START(test_vmx)
171 # r3 holds pointer to where to put the result of fork
172 # r4 holds pointer to the pid
173 # v20-v31 are non-volatile
174 PUSH_BASIC_STACK(512)
175 std r3,STACK_FRAME_PARAM(0)(sp) # Address of varray
176 std r4,STACK_FRAME_PARAM(1)(sp) # address of pid
177 PUSH_VMX(STACK_FRAME_LOCAL(2,0),r4)
178
179 bl load_vmx
180 nop
181
182 li r0,__NR_fork
183 sc
184 # Pass the result of fork back to the caller
185 ld r9,STACK_FRAME_PARAM(1)(sp)
186 std r3,0(r9)
187
188 ld r3,STACK_FRAME_PARAM(0)(sp)
189 bl check_vmx
190 nop
191
192 POP_VMX(STACK_FRAME_LOCAL(2,0),r4)
193 POP_BASIC_STACK(512)
194 blr
195FUNC_END(test_vmx)