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1da177e4 LT |
1 | /* |
2 | * arch/alpha/lib/fpreg.c | |
3 | * | |
4 | * (C) Copyright 1998 Linus Torvalds | |
5 | */ | |
6 | ||
7 | #if defined(__alpha_cix__) || defined(__alpha_fix__) | |
8 | #define STT(reg,val) asm volatile ("ftoit $f"#reg",%0" : "=r"(val)); | |
9 | #else | |
10 | #define STT(reg,val) asm volatile ("stt $f"#reg",%0" : "=m"(val)); | |
11 | #endif | |
12 | ||
13 | unsigned long | |
14 | alpha_read_fp_reg (unsigned long reg) | |
15 | { | |
16 | unsigned long val; | |
17 | ||
18 | switch (reg) { | |
19 | case 0: STT( 0, val); break; | |
20 | case 1: STT( 1, val); break; | |
21 | case 2: STT( 2, val); break; | |
22 | case 3: STT( 3, val); break; | |
23 | case 4: STT( 4, val); break; | |
24 | case 5: STT( 5, val); break; | |
25 | case 6: STT( 6, val); break; | |
26 | case 7: STT( 7, val); break; | |
27 | case 8: STT( 8, val); break; | |
28 | case 9: STT( 9, val); break; | |
29 | case 10: STT(10, val); break; | |
30 | case 11: STT(11, val); break; | |
31 | case 12: STT(12, val); break; | |
32 | case 13: STT(13, val); break; | |
33 | case 14: STT(14, val); break; | |
34 | case 15: STT(15, val); break; | |
35 | case 16: STT(16, val); break; | |
36 | case 17: STT(17, val); break; | |
37 | case 18: STT(18, val); break; | |
38 | case 19: STT(19, val); break; | |
39 | case 20: STT(20, val); break; | |
40 | case 21: STT(21, val); break; | |
41 | case 22: STT(22, val); break; | |
42 | case 23: STT(23, val); break; | |
43 | case 24: STT(24, val); break; | |
44 | case 25: STT(25, val); break; | |
45 | case 26: STT(26, val); break; | |
46 | case 27: STT(27, val); break; | |
47 | case 28: STT(28, val); break; | |
48 | case 29: STT(29, val); break; | |
49 | case 30: STT(30, val); break; | |
50 | case 31: STT(31, val); break; | |
51 | default: return 0; | |
52 | } | |
53 | return val; | |
54 | } | |
55 | ||
56 | #if defined(__alpha_cix__) || defined(__alpha_fix__) | |
57 | #define LDT(reg,val) asm volatile ("itoft %0,$f"#reg : : "r"(val)); | |
58 | #else | |
59 | #define LDT(reg,val) asm volatile ("ldt $f"#reg",%0" : : "m"(val)); | |
60 | #endif | |
61 | ||
62 | void | |
63 | alpha_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(__alpha_cix__) || defined(__alpha_fix__) | |
102 | #define STS(reg,val) asm volatile ("ftois $f"#reg",%0" : "=r"(val)); | |
103 | #else | |
104 | #define STS(reg,val) asm volatile ("sts $f"#reg",%0" : "=m"(val)); | |
105 | #endif | |
106 | ||
107 | unsigned long | |
108 | alpha_read_fp_reg_s (unsigned long reg) | |
109 | { | |
110 | unsigned long val; | |
111 | ||
112 | switch (reg) { | |
113 | case 0: STS( 0, val); break; | |
114 | case 1: STS( 1, val); break; | |
115 | case 2: STS( 2, val); break; | |
116 | case 3: STS( 3, val); break; | |
117 | case 4: STS( 4, val); break; | |
118 | case 5: STS( 5, val); break; | |
119 | case 6: STS( 6, val); break; | |
120 | case 7: STS( 7, val); break; | |
121 | case 8: STS( 8, val); break; | |
122 | case 9: STS( 9, val); break; | |
123 | case 10: STS(10, val); break; | |
124 | case 11: STS(11, val); break; | |
125 | case 12: STS(12, val); break; | |
126 | case 13: STS(13, val); break; | |
127 | case 14: STS(14, val); break; | |
128 | case 15: STS(15, val); break; | |
129 | case 16: STS(16, val); break; | |
130 | case 17: STS(17, val); break; | |
131 | case 18: STS(18, val); break; | |
132 | case 19: STS(19, val); break; | |
133 | case 20: STS(20, val); break; | |
134 | case 21: STS(21, val); break; | |
135 | case 22: STS(22, val); break; | |
136 | case 23: STS(23, val); break; | |
137 | case 24: STS(24, val); break; | |
138 | case 25: STS(25, val); break; | |
139 | case 26: STS(26, val); break; | |
140 | case 27: STS(27, val); break; | |
141 | case 28: STS(28, val); break; | |
142 | case 29: STS(29, val); break; | |
143 | case 30: STS(30, val); break; | |
144 | case 31: STS(31, val); break; | |
145 | default: return 0; | |
146 | } | |
147 | return val; | |
148 | } | |
149 | ||
150 | #if defined(__alpha_cix__) || defined(__alpha_fix__) | |
151 | #define LDS(reg,val) asm volatile ("itofs %0,$f"#reg : : "r"(val)); | |
152 | #else | |
153 | #define LDS(reg,val) asm volatile ("lds $f"#reg",%0" : : "m"(val)); | |
154 | #endif | |
155 | ||
156 | void | |
157 | alpha_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 | } |