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gerrit-public.fairphone.software / kernel / msm-5.4 / ad3793fc3945173f64d82d05d3ecde41f6c0435c / . / arch / alpha / lib / fpreg.c
blob: 34fea465645ba4f76111cd6b4844c68af3ae4bf6 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1// SPDX-License-Identifier: GPL-2.0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2/*
3 * arch/alpha/lib/fpreg.c
4 *
5 * (C) Copyright 1998 Linus Torvalds
6 */
7
Al Viro00fc0e02016-01-11 09:51:29 -0500[diff] [blame]8#include <linux/compiler.h>
9#include <linux/export.h>
10
Akinobu Mita4b417d02006-03-26 01:39:01 -0800[diff] [blame]11#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]12#define STT(reg,val) asm volatile ("ftoit $f"#reg",%0" : "=r"(val));
13#else
14#define STT(reg,val) asm volatile ("stt $f"#reg",%0" : "=m"(val));
15#endif
16
17unsigned long
18alpha_read_fp_reg (unsigned long reg)
19{
20 unsigned long val;
21
22 switch (reg) {
23 case 0: STT( 0, val); break;
24 case 1: STT( 1, val); break;
25 case 2: STT( 2, val); break;
26 case 3: STT( 3, val); break;
27 case 4: STT( 4, val); break;
28 case 5: STT( 5, val); break;
29 case 6: STT( 6, val); break;
30 case 7: STT( 7, val); break;
31 case 8: STT( 8, val); break;
32 case 9: STT( 9, val); break;
33 case 10: STT(10, val); break;
34 case 11: STT(11, val); break;
35 case 12: STT(12, val); break;
36 case 13: STT(13, val); break;
37 case 14: STT(14, val); break;
38 case 15: STT(15, val); break;
39 case 16: STT(16, val); break;
40 case 17: STT(17, val); break;
41 case 18: STT(18, val); break;
42 case 19: STT(19, val); break;
43 case 20: STT(20, val); break;
44 case 21: STT(21, val); break;
45 case 22: STT(22, val); break;
46 case 23: STT(23, val); break;
47 case 24: STT(24, val); break;
48 case 25: STT(25, val); break;
49 case 26: STT(26, val); break;
50 case 27: STT(27, val); break;
51 case 28: STT(28, val); break;
52 case 29: STT(29, val); break;
53 case 30: STT(30, val); break;
54 case 31: STT(31, val); break;
55 default: return 0;
56 }
57 return val;
58}
Al Viro00fc0e02016-01-11 09:51:29 -0500[diff] [blame]59EXPORT_SYMBOL(alpha_read_fp_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]60
Akinobu Mita4b417d02006-03-26 01:39:01 -0800[diff] [blame]61#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]62#define LDT(reg,val) asm volatile ("itoft %0,$f"#reg : : "r"(val));
63#else
64#define LDT(reg,val) asm volatile ("ldt $f"#reg",%0" : : "m"(val));
65#endif
66
67void
68alpha_write_fp_reg (unsigned long reg, unsigned long val)
69{
70 switch (reg) {
71 case 0: LDT( 0, val); break;
72 case 1: LDT( 1, val); break;
73 case 2: LDT( 2, val); break;
74 case 3: LDT( 3, val); break;
75 case 4: LDT( 4, val); break;
76 case 5: LDT( 5, val); break;
77 case 6: LDT( 6, val); break;
78 case 7: LDT( 7, val); break;
79 case 8: LDT( 8, val); break;
80 case 9: LDT( 9, val); break;
81 case 10: LDT(10, val); break;
82 case 11: LDT(11, val); break;
83 case 12: LDT(12, val); break;
84 case 13: LDT(13, val); break;
85 case 14: LDT(14, val); break;
86 case 15: LDT(15, val); break;
87 case 16: LDT(16, val); break;
88 case 17: LDT(17, val); break;
89 case 18: LDT(18, val); break;
90 case 19: LDT(19, val); break;
91 case 20: LDT(20, val); break;
92 case 21: LDT(21, val); break;
93 case 22: LDT(22, val); break;
94 case 23: LDT(23, val); break;
95 case 24: LDT(24, val); break;
96 case 25: LDT(25, val); break;
97 case 26: LDT(26, val); break;
98 case 27: LDT(27, val); break;
99 case 28: LDT(28, val); break;
100 case 29: LDT(29, val); break;
101 case 30: LDT(30, val); break;
102 case 31: LDT(31, val); break;
103 }
104}
Al Viro00fc0e02016-01-11 09:51:29 -0500[diff] [blame]105EXPORT_SYMBOL(alpha_write_fp_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]106
Akinobu Mita4b417d02006-03-26 01:39:01 -0800[diff] [blame]107#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]108#define STS(reg,val) asm volatile ("ftois $f"#reg",%0" : "=r"(val));
109#else
110#define STS(reg,val) asm volatile ("sts $f"#reg",%0" : "=m"(val));
111#endif
112
113unsigned long
114alpha_read_fp_reg_s (unsigned long reg)
115{
116 unsigned long val;
117
118 switch (reg) {
119 case 0: STS( 0, val); break;
120 case 1: STS( 1, val); break;
121 case 2: STS( 2, val); break;
122 case 3: STS( 3, val); break;
123 case 4: STS( 4, val); break;
124 case 5: STS( 5, val); break;
125 case 6: STS( 6, val); break;
126 case 7: STS( 7, val); break;
127 case 8: STS( 8, val); break;
128 case 9: STS( 9, val); break;
129 case 10: STS(10, val); break;
130 case 11: STS(11, val); break;
131 case 12: STS(12, val); break;
132 case 13: STS(13, val); break;
133 case 14: STS(14, val); break;
134 case 15: STS(15, val); break;
135 case 16: STS(16, val); break;
136 case 17: STS(17, val); break;
137 case 18: STS(18, val); break;
138 case 19: STS(19, val); break;
139 case 20: STS(20, val); break;
140 case 21: STS(21, val); break;
141 case 22: STS(22, val); break;
142 case 23: STS(23, val); break;
143 case 24: STS(24, val); break;
144 case 25: STS(25, val); break;
145 case 26: STS(26, val); break;
146 case 27: STS(27, val); break;
147 case 28: STS(28, val); break;
148 case 29: STS(29, val); break;
149 case 30: STS(30, val); break;
150 case 31: STS(31, val); break;
151 default: return 0;
152 }
153 return val;
154}
Al Viro00fc0e02016-01-11 09:51:29 -0500[diff] [blame]155EXPORT_SYMBOL(alpha_read_fp_reg_s);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]156
Akinobu Mita4b417d02006-03-26 01:39:01 -0800[diff] [blame]157#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]158#define LDS(reg,val) asm volatile ("itofs %0,$f"#reg : : "r"(val));
159#else
160#define LDS(reg,val) asm volatile ("lds $f"#reg",%0" : : "m"(val));
161#endif
162
163void
164alpha_write_fp_reg_s (unsigned long reg, unsigned long val)
165{
166 switch (reg) {
167 case 0: LDS( 0, val); break;
168 case 1: LDS( 1, val); break;
169 case 2: LDS( 2, val); break;
170 case 3: LDS( 3, val); break;
171 case 4: LDS( 4, val); break;
172 case 5: LDS( 5, val); break;
173 case 6: LDS( 6, val); break;
174 case 7: LDS( 7, val); break;
175 case 8: LDS( 8, val); break;
176 case 9: LDS( 9, val); break;
177 case 10: LDS(10, val); break;
178 case 11: LDS(11, val); break;
179 case 12: LDS(12, val); break;
180 case 13: LDS(13, val); break;
181 case 14: LDS(14, val); break;
182 case 15: LDS(15, val); break;
183 case 16: LDS(16, val); break;
184 case 17: LDS(17, val); break;
185 case 18: LDS(18, val); break;
186 case 19: LDS(19, val); break;
187 case 20: LDS(20, val); break;
188 case 21: LDS(21, val); break;
189 case 22: LDS(22, val); break;
190 case 23: LDS(23, val); break;
191 case 24: LDS(24, val); break;
192 case 25: LDS(25, val); break;
193 case 26: LDS(26, val); break;
194 case 27: LDS(27, val); break;
195 case 28: LDS(28, val); break;
196 case 29: LDS(29, val); break;
197 case 30: LDS(30, val); break;
198 case 31: LDS(31, val); break;
199 }
200}
Al Viro00fc0e02016-01-11 09:51:29 -0500[diff] [blame]201EXPORT_SYMBOL(alpha_write_fp_reg_s);