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