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/arch/alpha/lib/fpreg.c

https://bitbucket.org/evzijst/gittest
C | 193 lines | 178 code | 10 blank | 5 comment | 8 complexity | 37ce87d6ed2ab056a7a16524960c627e MD5 | raw file
  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 $f"#reg",%0" : "=m"(val));
 11#endif
 12
 13unsigned long
 14alpha_read_fp_reg (unsigned long reg)
 15{
 16	unsigned long val;
 17
 18	switch (reg) {
 19	      case  0: STT( 0, val); break;
 20	      case  1: STT( 1, val); break;
 21	      case  2: STT( 2, val); break;
 22	      case  3: STT( 3, val); break;
 23	      case  4: STT( 4, val); break;
 24	      case  5: STT( 5, val); break;
 25	      case  6: STT( 6, val); break;
 26	      case  7: STT( 7, val); break;
 27	      case  8: STT( 8, val); break;
 28	      case  9: STT( 9, val); break;
 29	      case 10: STT(10, val); break;
 30	      case 11: STT(11, val); break;
 31	      case 12: STT(12, val); break;
 32	      case 13: STT(13, val); break;
 33	      case 14: STT(14, val); break;
 34	      case 15: STT(15, val); break;
 35	      case 16: STT(16, val); break;
 36	      case 17: STT(17, val); break;
 37	      case 18: STT(18, val); break;
 38	      case 19: STT(19, val); break;
 39	      case 20: STT(20, val); break;
 40	      case 21: STT(21, val); break;
 41	      case 22: STT(22, val); break;
 42	      case 23: STT(23, val); break;
 43	      case 24: STT(24, val); break;
 44	      case 25: STT(25, val); break;
 45	      case 26: STT(26, val); break;
 46	      case 27: STT(27, val); break;
 47	      case 28: STT(28, val); break;
 48	      case 29: STT(29, val); break;
 49	      case 30: STT(30, val); break;
 50	      case 31: STT(31, val); break;
 51	      default: return 0;
 52	}
 53	return val;
 54}
 55
 56#if defined(__alpha_cix__) || defined(__alpha_fix__)
 57#define LDT(reg,val)  asm volatile ("itoft %0,$f"#reg : : "r"(val));
 58#else
 59#define LDT(reg,val)  asm volatile ("ldt $f"#reg",%0" : : "m"(val));
 60#endif
 61
 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(__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 $f"#reg",%0" : "=m"(val));
105#endif
106
107unsigned long
108alpha_read_fp_reg_s (unsigned long reg)
109{
110	unsigned long val;
111
112	switch (reg) {
113	      case  0: STS( 0, val); break;
114	      case  1: STS( 1, val); break;
115	      case  2: STS( 2, val); break;
116	      case  3: STS( 3, val); break;
117	      case  4: STS( 4, val); break;
118	      case  5: STS( 5, val); break;
119	      case  6: STS( 6, val); break;
120	      case  7: STS( 7, val); break;
121	      case  8: STS( 8, val); break;
122	      case  9: STS( 9, val); break;
123	      case 10: STS(10, val); break;
124	      case 11: STS(11, val); break;
125	      case 12: STS(12, val); break;
126	      case 13: STS(13, val); break;
127	      case 14: STS(14, val); break;
128	      case 15: STS(15, val); break;
129	      case 16: STS(16, val); break;
130	      case 17: STS(17, val); break;
131	      case 18: STS(18, val); break;
132	      case 19: STS(19, val); break;
133	      case 20: STS(20, val); break;
134	      case 21: STS(21, val); break;
135	      case 22: STS(22, val); break;
136	      case 23: STS(23, val); break;
137	      case 24: STS(24, val); break;
138	      case 25: STS(25, val); break;
139	      case 26: STS(26, val); break;
140	      case 27: STS(27, val); break;
141	      case 28: STS(28, val); break;
142	      case 29: STS(29, val); break;
143	      case 30: STS(30, val); break;
144	      case 31: STS(31, val); break;
145	      default: return 0;
146	}
147	return val;
148}
149
150#if defined(__alpha_cix__) || defined(__alpha_fix__)
151#define LDS(reg,val)  asm volatile ("itofs %0,$f"#reg : : "r"(val));
152#else
153#define LDS(reg,val)  asm volatile ("lds $f"#reg",%0" : : "m"(val));
154#endif
155
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}