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 $f"#reg",%0" : "=m"(val));
11 #endif
12
13 unsigned long
alpha_read_fp_reg(unsigned long reg)14 alpha_read_fp_reg (unsigned long reg)
15 {
16 unsigned long val;
17
18 switch (reg) {
19 case 0: STT( 0, val); break;
20 case 1: STT( 1, val); break;
21 case 2: STT( 2, val); break;
22 case 3: STT( 3, val); break;
23 case 4: STT( 4, val); break;
24 case 5: STT( 5, val); break;
25 case 6: STT( 6, val); break;
26 case 7: STT( 7, val); break;
27 case 8: STT( 8, val); break;
28 case 9: STT( 9, val); break;
29 case 10: STT(10, val); break;
30 case 11: STT(11, val); break;
31 case 12: STT(12, val); break;
32 case 13: STT(13, val); break;
33 case 14: STT(14, val); break;
34 case 15: STT(15, val); break;
35 case 16: STT(16, val); break;
36 case 17: STT(17, val); break;
37 case 18: STT(18, val); break;
38 case 19: STT(19, val); break;
39 case 20: STT(20, val); break;
40 case 21: STT(21, val); break;
41 case 22: STT(22, val); break;
42 case 23: STT(23, val); break;
43 case 24: STT(24, val); break;
44 case 25: STT(25, val); break;
45 case 26: STT(26, val); break;
46 case 27: STT(27, val); break;
47 case 28: STT(28, val); break;
48 case 29: STT(29, val); break;
49 case 30: STT(30, val); break;
50 case 31: STT(31, val); break;
51 default: return 0;
52 }
53 return val;
54 }
55
56 #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
57 #define LDT(reg,val) asm volatile ("itoft %0,$f"#reg : : "r"(val));
58 #else
59 #define LDT(reg,val) asm volatile ("ldt $f"#reg",%0" : : "m"(val));
60 #endif
61
62 void
alpha_write_fp_reg(unsigned long reg,unsigned long val)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(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 $f"#reg",%0" : "=m"(val));
105 #endif
106
107 unsigned long
alpha_read_fp_reg_s(unsigned long reg)108 alpha_read_fp_reg_s (unsigned long reg)
109 {
110 unsigned long val;
111
112 switch (reg) {
113 case 0: STS( 0, val); break;
114 case 1: STS( 1, val); break;
115 case 2: STS( 2, val); break;
116 case 3: STS( 3, val); break;
117 case 4: STS( 4, val); break;
118 case 5: STS( 5, val); break;
119 case 6: STS( 6, val); break;
120 case 7: STS( 7, val); break;
121 case 8: STS( 8, val); break;
122 case 9: STS( 9, val); break;
123 case 10: STS(10, val); break;
124 case 11: STS(11, val); break;
125 case 12: STS(12, val); break;
126 case 13: STS(13, val); break;
127 case 14: STS(14, val); break;
128 case 15: STS(15, val); break;
129 case 16: STS(16, val); break;
130 case 17: STS(17, val); break;
131 case 18: STS(18, val); break;
132 case 19: STS(19, val); break;
133 case 20: STS(20, val); break;
134 case 21: STS(21, val); break;
135 case 22: STS(22, val); break;
136 case 23: STS(23, val); break;
137 case 24: STS(24, val); break;
138 case 25: STS(25, val); break;
139 case 26: STS(26, val); break;
140 case 27: STS(27, val); break;
141 case 28: STS(28, val); break;
142 case 29: STS(29, val); break;
143 case 30: STS(30, val); break;
144 case 31: STS(31, val); break;
145 default: return 0;
146 }
147 return val;
148 }
149
150 #if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
151 #define LDS(reg,val) asm volatile ("itofs %0,$f"#reg : : "r"(val));
152 #else
153 #define LDS(reg,val) asm volatile ("lds $f"#reg",%0" : : "m"(val));
154 #endif
155
156 void
alpha_write_fp_reg_s(unsigned long reg,unsigned long val)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 }
194