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1/*
2 * arch/alpha/lib/fpreg.c
3 *
4 * (C) Copyright 1998 Linus Torvalds
5 */
6
7#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
8#define STT(reg,val) asm volatile ("ftoit $f"#reg",%0" : "=r"(val));
9#else
10#define STT(reg,val) asm volatile ("stt $f"#reg",%0" : "=m"(val));
11#endif
12
13unsigned long
14alpha_read_fp_reg (unsigned long reg)
15{
16 unsigned long val;
17
18 switch (reg) {
19 case 0: STT( 0, val); break;
20 case 1: STT( 1, val); break;
21 case 2: STT( 2, val); break;
22 case 3: STT( 3, val); break;
23 case 4: STT( 4, val); break;
24 case 5: STT( 5, val); break;
25 case 6: STT( 6, val); break;
26 case 7: STT( 7, val); break;
27 case 8: STT( 8, val); break;
28 case 9: STT( 9, val); break;
29 case 10: STT(10, val); break;
30 case 11: STT(11, val); break;
31 case 12: STT(12, val); break;
32 case 13: STT(13, val); break;
33 case 14: STT(14, val); break;
34 case 15: STT(15, val); break;
35 case 16: STT(16, val); break;
36 case 17: STT(17, val); break;
37 case 18: STT(18, val); break;
38 case 19: STT(19, val); break;
39 case 20: STT(20, val); break;
40 case 21: STT(21, val); break;
41 case 22: STT(22, val); break;
42 case 23: STT(23, val); break;
43 case 24: STT(24, val); break;
44 case 25: STT(25, val); break;
45 case 26: STT(26, val); break;
46 case 27: STT(27, val); break;
47 case 28: STT(28, val); break;
48 case 29: STT(29, val); break;
49 case 30: STT(30, val); break;
50 case 31: STT(31, val); break;
51 default: return 0;
52 }
53 return val;
54}
55
56#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
57#define LDT(reg,val) asm volatile ("itoft %0,$f"#reg : : "r"(val));
58#else
59#define LDT(reg,val) asm volatile ("ldt $f"#reg",%0" : : "m"(val));
60#endif
61
62void
63alpha_write_fp_reg (unsigned long reg, unsigned long val)
64{
65 switch (reg) {
66 case 0: LDT( 0, val); break;
67 case 1: LDT( 1, val); break;
68 case 2: LDT( 2, val); break;
69 case 3: LDT( 3, val); break;
70 case 4: LDT( 4, val); break;
71 case 5: LDT( 5, val); break;
72 case 6: LDT( 6, val); break;
73 case 7: LDT( 7, val); break;
74 case 8: LDT( 8, val); break;
75 case 9: LDT( 9, val); break;
76 case 10: LDT(10, val); break;
77 case 11: LDT(11, val); break;
78 case 12: LDT(12, val); break;
79 case 13: LDT(13, val); break;
80 case 14: LDT(14, val); break;
81 case 15: LDT(15, val); break;
82 case 16: LDT(16, val); break;
83 case 17: LDT(17, val); break;
84 case 18: LDT(18, val); break;
85 case 19: LDT(19, val); break;
86 case 20: LDT(20, val); break;
87 case 21: LDT(21, val); break;
88 case 22: LDT(22, val); break;
89 case 23: LDT(23, val); break;
90 case 24: LDT(24, val); break;
91 case 25: LDT(25, val); break;
92 case 26: LDT(26, val); break;
93 case 27: LDT(27, val); break;
94 case 28: LDT(28, val); break;
95 case 29: LDT(29, val); break;
96 case 30: LDT(30, val); break;
97 case 31: LDT(31, val); break;
98 }
99}
100
101#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
102#define STS(reg,val) asm volatile ("ftois $f"#reg",%0" : "=r"(val));
103#else
104#define STS(reg,val) asm volatile ("sts $f"#reg",%0" : "=m"(val));
105#endif
106
107unsigned long
108alpha_read_fp_reg_s (unsigned long reg)
109{
110 unsigned long val;
111
112 switch (reg) {
113 case 0: STS( 0, val); break;
114 case 1: STS( 1, val); break;
115 case 2: STS( 2, val); break;
116 case 3: STS( 3, val); break;
117 case 4: STS( 4, val); break;
118 case 5: STS( 5, val); break;
119 case 6: STS( 6, val); break;
120 case 7: STS( 7, val); break;
121 case 8: STS( 8, val); break;
122 case 9: STS( 9, val); break;
123 case 10: STS(10, val); break;
124 case 11: STS(11, val); break;
125 case 12: STS(12, val); break;
126 case 13: STS(13, val); break;
127 case 14: STS(14, val); break;
128 case 15: STS(15, val); break;
129 case 16: STS(16, val); break;
130 case 17: STS(17, val); break;
131 case 18: STS(18, val); break;
132 case 19: STS(19, val); break;
133 case 20: STS(20, val); break;
134 case 21: STS(21, val); break;
135 case 22: STS(22, val); break;
136 case 23: STS(23, val); break;
137 case 24: STS(24, val); break;
138 case 25: STS(25, val); break;
139 case 26: STS(26, val); break;
140 case 27: STS(27, val); break;
141 case 28: STS(28, val); break;
142 case 29: STS(29, val); break;
143 case 30: STS(30, val); break;
144 case 31: STS(31, val); break;
145 default: return 0;
146 }
147 return val;
148}
149
150#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
151#define LDS(reg,val) asm volatile ("itofs %0,$f"#reg : : "r"(val));
152#else
153#define LDS(reg,val) asm volatile ("lds $f"#reg",%0" : : "m"(val));
154#endif
155
156void
157alpha_write_fp_reg_s (unsigned long reg, unsigned long val)
158{
159 switch (reg) {
160 case 0: LDS( 0, val); break;
161 case 1: LDS( 1, val); break;
162 case 2: LDS( 2, val); break;
163 case 3: LDS( 3, val); break;
164 case 4: LDS( 4, val); break;
165 case 5: LDS( 5, val); break;
166 case 6: LDS( 6, val); break;
167 case 7: LDS( 7, val); break;
168 case 8: LDS( 8, val); break;
169 case 9: LDS( 9, val); break;
170 case 10: LDS(10, val); break;
171 case 11: LDS(11, val); break;
172 case 12: LDS(12, val); break;
173 case 13: LDS(13, val); break;
174 case 14: LDS(14, val); break;
175 case 15: LDS(15, val); break;
176 case 16: LDS(16, val); break;
177 case 17: LDS(17, val); break;
178 case 18: LDS(18, val); break;
179 case 19: LDS(19, val); break;
180 case 20: LDS(20, val); break;
181 case 21: LDS(21, val); break;
182 case 22: LDS(22, val); break;
183 case 23: LDS(23, val); break;
184 case 24: LDS(24, val); break;
185 case 25: LDS(25, val); break;
186 case 26: LDS(26, val); break;
187 case 27: LDS(27, val); break;
188 case 28: LDS(28, val); break;
189 case 29: LDS(29, val); break;
190 case 30: LDS(30, val); break;
191 case 31: LDS(31, val); break;
192 }
193}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * arch/alpha/lib/fpreg.c
4 *
5 * (C) Copyright 1998 Linus Torvalds
6 */
7
8#include <linux/compiler.h>
9#include <linux/export.h>
10#include <linux/preempt.h>
11#include <asm/thread_info.h>
12
13#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
14#define STT(reg,val) asm volatile ("ftoit $f"#reg",%0" : "=r"(val));
15#else
16#define STT(reg,val) asm volatile ("stt $f"#reg",%0" : "=m"(val));
17#endif
18
19unsigned long
20alpha_read_fp_reg (unsigned long reg)
21{
22 unsigned long val;
23
24 if (unlikely(reg >= 32))
25 return 0;
26 preempt_disable();
27 if (current_thread_info()->status & TS_SAVED_FP)
28 val = current_thread_info()->fp[reg];
29 else switch (reg) {
30 case 0: STT( 0, val); break;
31 case 1: STT( 1, val); break;
32 case 2: STT( 2, val); break;
33 case 3: STT( 3, val); break;
34 case 4: STT( 4, val); break;
35 case 5: STT( 5, val); break;
36 case 6: STT( 6, val); break;
37 case 7: STT( 7, val); break;
38 case 8: STT( 8, val); break;
39 case 9: STT( 9, val); break;
40 case 10: STT(10, val); break;
41 case 11: STT(11, val); break;
42 case 12: STT(12, val); break;
43 case 13: STT(13, val); break;
44 case 14: STT(14, val); break;
45 case 15: STT(15, val); break;
46 case 16: STT(16, val); break;
47 case 17: STT(17, val); break;
48 case 18: STT(18, val); break;
49 case 19: STT(19, val); break;
50 case 20: STT(20, val); break;
51 case 21: STT(21, val); break;
52 case 22: STT(22, val); break;
53 case 23: STT(23, val); break;
54 case 24: STT(24, val); break;
55 case 25: STT(25, val); break;
56 case 26: STT(26, val); break;
57 case 27: STT(27, val); break;
58 case 28: STT(28, val); break;
59 case 29: STT(29, val); break;
60 case 30: STT(30, val); break;
61 case 31: STT(31, val); break;
62 }
63 preempt_enable();
64 return val;
65}
66EXPORT_SYMBOL(alpha_read_fp_reg);
67
68#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
69#define LDT(reg,val) asm volatile ("itoft %0,$f"#reg : : "r"(val));
70#else
71#define LDT(reg,val) asm volatile ("ldt $f"#reg",%0" : : "m"(val));
72#endif
73
74void
75alpha_write_fp_reg (unsigned long reg, unsigned long val)
76{
77 if (unlikely(reg >= 32))
78 return;
79
80 preempt_disable();
81 if (current_thread_info()->status & TS_SAVED_FP) {
82 current_thread_info()->status |= TS_RESTORE_FP;
83 current_thread_info()->fp[reg] = val;
84 } else switch (reg) {
85 case 0: LDT( 0, val); break;
86 case 1: LDT( 1, val); break;
87 case 2: LDT( 2, val); break;
88 case 3: LDT( 3, val); break;
89 case 4: LDT( 4, val); break;
90 case 5: LDT( 5, val); break;
91 case 6: LDT( 6, val); break;
92 case 7: LDT( 7, val); break;
93 case 8: LDT( 8, val); break;
94 case 9: LDT( 9, val); break;
95 case 10: LDT(10, val); break;
96 case 11: LDT(11, val); break;
97 case 12: LDT(12, val); break;
98 case 13: LDT(13, val); break;
99 case 14: LDT(14, val); break;
100 case 15: LDT(15, val); break;
101 case 16: LDT(16, val); break;
102 case 17: LDT(17, val); break;
103 case 18: LDT(18, val); break;
104 case 19: LDT(19, val); break;
105 case 20: LDT(20, val); break;
106 case 21: LDT(21, val); break;
107 case 22: LDT(22, val); break;
108 case 23: LDT(23, val); break;
109 case 24: LDT(24, val); break;
110 case 25: LDT(25, val); break;
111 case 26: LDT(26, val); break;
112 case 27: LDT(27, val); break;
113 case 28: LDT(28, val); break;
114 case 29: LDT(29, val); break;
115 case 30: LDT(30, val); break;
116 case 31: LDT(31, val); break;
117 }
118 preempt_enable();
119}
120EXPORT_SYMBOL(alpha_write_fp_reg);
121
122#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
123#define STS(reg,val) asm volatile ("ftois $f"#reg",%0" : "=r"(val));
124#else
125#define STS(reg,val) asm volatile ("sts $f"#reg",%0" : "=m"(val));
126#endif
127
128unsigned long
129alpha_read_fp_reg_s (unsigned long reg)
130{
131 unsigned long val;
132
133 if (unlikely(reg >= 32))
134 return 0;
135
136 preempt_disable();
137 if (current_thread_info()->status & TS_SAVED_FP) {
138 LDT(0, current_thread_info()->fp[reg]);
139 STS(0, val);
140 } else switch (reg) {
141 case 0: STS( 0, val); break;
142 case 1: STS( 1, val); break;
143 case 2: STS( 2, val); break;
144 case 3: STS( 3, val); break;
145 case 4: STS( 4, val); break;
146 case 5: STS( 5, val); break;
147 case 6: STS( 6, val); break;
148 case 7: STS( 7, val); break;
149 case 8: STS( 8, val); break;
150 case 9: STS( 9, val); break;
151 case 10: STS(10, val); break;
152 case 11: STS(11, val); break;
153 case 12: STS(12, val); break;
154 case 13: STS(13, val); break;
155 case 14: STS(14, val); break;
156 case 15: STS(15, val); break;
157 case 16: STS(16, val); break;
158 case 17: STS(17, val); break;
159 case 18: STS(18, val); break;
160 case 19: STS(19, val); break;
161 case 20: STS(20, val); break;
162 case 21: STS(21, val); break;
163 case 22: STS(22, val); break;
164 case 23: STS(23, val); break;
165 case 24: STS(24, val); break;
166 case 25: STS(25, val); break;
167 case 26: STS(26, val); break;
168 case 27: STS(27, val); break;
169 case 28: STS(28, val); break;
170 case 29: STS(29, val); break;
171 case 30: STS(30, val); break;
172 case 31: STS(31, val); break;
173 }
174 preempt_enable();
175 return val;
176}
177EXPORT_SYMBOL(alpha_read_fp_reg_s);
178
179#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
180#define LDS(reg,val) asm volatile ("itofs %0,$f"#reg : : "r"(val));
181#else
182#define LDS(reg,val) asm volatile ("lds $f"#reg",%0" : : "m"(val));
183#endif
184
185void
186alpha_write_fp_reg_s (unsigned long reg, unsigned long val)
187{
188 if (unlikely(reg >= 32))
189 return;
190
191 preempt_disable();
192 if (current_thread_info()->status & TS_SAVED_FP) {
193 current_thread_info()->status |= TS_RESTORE_FP;
194 LDS(0, val);
195 STT(0, current_thread_info()->fp[reg]);
196 } else switch (reg) {
197 case 0: LDS( 0, val); break;
198 case 1: LDS( 1, val); break;
199 case 2: LDS( 2, val); break;
200 case 3: LDS( 3, val); break;
201 case 4: LDS( 4, val); break;
202 case 5: LDS( 5, val); break;
203 case 6: LDS( 6, val); break;
204 case 7: LDS( 7, val); break;
205 case 8: LDS( 8, val); break;
206 case 9: LDS( 9, val); break;
207 case 10: LDS(10, val); break;
208 case 11: LDS(11, val); break;
209 case 12: LDS(12, val); break;
210 case 13: LDS(13, val); break;
211 case 14: LDS(14, val); break;
212 case 15: LDS(15, val); break;
213 case 16: LDS(16, val); break;
214 case 17: LDS(17, val); break;
215 case 18: LDS(18, val); break;
216 case 19: LDS(19, val); break;
217 case 20: LDS(20, val); break;
218 case 21: LDS(21, val); break;
219 case 22: LDS(22, val); break;
220 case 23: LDS(23, val); break;
221 case 24: LDS(24, val); break;
222 case 25: LDS(25, val); break;
223 case 26: LDS(26, val); break;
224 case 27: LDS(27, val); break;
225 case 28: LDS(28, val); break;
226 case 29: LDS(29, val); break;
227 case 30: LDS(30, val); break;
228 case 31: LDS(31, val); break;
229 }
230 preempt_enable();
231}
232EXPORT_SYMBOL(alpha_write_fp_reg_s);