]>
Commit | Line | Data |
---|---|---|
00406dff FB |
1 | /* |
2 | NetWinder Floating Point Emulator | |
3 | (c) Rebel.COM, 1998,1999 | |
4 | ||
5 | Direct questions, comments to Scott Bambrough <scottb@netwinder.org> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
70539e18 | 18 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
00406dff FB |
19 | */ |
20 | ||
d39594e9 | 21 | #include "qemu/osdep.h" |
00406dff | 22 | #include "fpa11.h" |
6b4c305c | 23 | #include "fpu/softfloat.h" |
00406dff FB |
24 | #include "fpopcode.h" |
25 | ||
26 | float64 float64_exp(float64 Fm); | |
27 | float64 float64_ln(float64 Fm); | |
28 | float64 float64_sin(float64 rFm); | |
29 | float64 float64_cos(float64 rFm); | |
30 | float64 float64_arcsin(float64 rFm); | |
31 | float64 float64_arctan(float64 rFm); | |
32 | float64 float64_log(float64 rFm); | |
33 | float64 float64_tan(float64 rFm); | |
34 | float64 float64_arccos(float64 rFm); | |
35 | float64 float64_pow(float64 rFn,float64 rFm); | |
36 | float64 float64_pol(float64 rFn,float64 rFm); | |
37 | ||
38 | unsigned int DoubleCPDO(const unsigned int opcode) | |
39 | { | |
40 | FPA11 *fpa11 = GET_FPA11(); | |
f090c9d4 | 41 | float64 rFm, rFn = float64_zero; |
00406dff FB |
42 | unsigned int Fd, Fm, Fn, nRc = 1; |
43 | ||
44 | //printk("DoubleCPDO(0x%08x)\n",opcode); | |
3b46e624 | 45 | |
00406dff FB |
46 | Fm = getFm(opcode); |
47 | if (CONSTANT_FM(opcode)) | |
48 | { | |
49 | rFm = getDoubleConstant(Fm); | |
50 | } | |
51 | else | |
3b46e624 | 52 | { |
00406dff FB |
53 | switch (fpa11->fType[Fm]) |
54 | { | |
55 | case typeSingle: | |
20495218 | 56 | rFm = float32_to_float64(fpa11->fpreg[Fm].fSingle, &fpa11->fp_status); |
00406dff FB |
57 | break; |
58 | ||
59 | case typeDouble: | |
60 | rFm = fpa11->fpreg[Fm].fDouble; | |
61 | break; | |
62 | ||
63 | case typeExtended: | |
64 | // !! patb | |
65 | //printk("not implemented! why not?\n"); | |
66 | //!! ScottB | |
67 | // should never get here, if extended involved | |
68 | // then other operand should be promoted then | |
69 | // ExtendedCPDO called. | |
70 | break; | |
71 | ||
72 | default: return 0; | |
73 | } | |
74 | } | |
75 | ||
76 | if (!MONADIC_INSTRUCTION(opcode)) | |
77 | { | |
78 | Fn = getFn(opcode); | |
79 | switch (fpa11->fType[Fn]) | |
80 | { | |
81 | case typeSingle: | |
20495218 | 82 | rFn = float32_to_float64(fpa11->fpreg[Fn].fSingle, &fpa11->fp_status); |
00406dff FB |
83 | break; |
84 | ||
85 | case typeDouble: | |
86 | rFn = fpa11->fpreg[Fn].fDouble; | |
87 | break; | |
3b46e624 | 88 | |
00406dff FB |
89 | default: return 0; |
90 | } | |
91 | } | |
92 | ||
93 | Fd = getFd(opcode); | |
94 | /* !! this switch isn't optimized; better (opcode & MASK_ARITHMETIC_OPCODE)>>24, sort of */ | |
95 | switch (opcode & MASK_ARITHMETIC_OPCODE) | |
96 | { | |
97 | /* dyadic opcodes */ | |
98 | case ADF_CODE: | |
20495218 | 99 | fpa11->fpreg[Fd].fDouble = float64_add(rFn,rFm, &fpa11->fp_status); |
00406dff FB |
100 | break; |
101 | ||
102 | case MUF_CODE: | |
103 | case FML_CODE: | |
20495218 | 104 | fpa11->fpreg[Fd].fDouble = float64_mul(rFn,rFm, &fpa11->fp_status); |
00406dff FB |
105 | break; |
106 | ||
107 | case SUF_CODE: | |
20495218 | 108 | fpa11->fpreg[Fd].fDouble = float64_sub(rFn,rFm, &fpa11->fp_status); |
00406dff FB |
109 | break; |
110 | ||
111 | case RSF_CODE: | |
20495218 | 112 | fpa11->fpreg[Fd].fDouble = float64_sub(rFm,rFn, &fpa11->fp_status); |
00406dff FB |
113 | break; |
114 | ||
115 | case DVF_CODE: | |
116 | case FDV_CODE: | |
20495218 | 117 | fpa11->fpreg[Fd].fDouble = float64_div(rFn,rFm, &fpa11->fp_status); |
00406dff FB |
118 | break; |
119 | ||
120 | case RDF_CODE: | |
121 | case FRD_CODE: | |
20495218 | 122 | fpa11->fpreg[Fd].fDouble = float64_div(rFm,rFn, &fpa11->fp_status); |
00406dff FB |
123 | break; |
124 | ||
125 | #if 0 | |
126 | case POW_CODE: | |
127 | fpa11->fpreg[Fd].fDouble = float64_pow(rFn,rFm); | |
128 | break; | |
129 | ||
130 | case RPW_CODE: | |
131 | fpa11->fpreg[Fd].fDouble = float64_pow(rFm,rFn); | |
132 | break; | |
133 | #endif | |
134 | ||
135 | case RMF_CODE: | |
20495218 | 136 | fpa11->fpreg[Fd].fDouble = float64_rem(rFn,rFm, &fpa11->fp_status); |
00406dff FB |
137 | break; |
138 | ||
139 | #if 0 | |
140 | case POL_CODE: | |
141 | fpa11->fpreg[Fd].fDouble = float64_pol(rFn,rFm); | |
142 | break; | |
143 | #endif | |
144 | ||
145 | /* monadic opcodes */ | |
146 | case MVF_CODE: | |
147 | fpa11->fpreg[Fd].fDouble = rFm; | |
148 | break; | |
149 | ||
150 | case MNF_CODE: | |
151 | { | |
152 | unsigned int *p = (unsigned int*)&rFm; | |
e2542fe2 | 153 | #ifdef HOST_WORDS_BIGENDIAN |
a8d3431a FB |
154 | p[0] ^= 0x80000000; |
155 | #else | |
00406dff | 156 | p[1] ^= 0x80000000; |
a8d3431a | 157 | #endif |
00406dff FB |
158 | fpa11->fpreg[Fd].fDouble = rFm; |
159 | } | |
160 | break; | |
161 | ||
162 | case ABS_CODE: | |
163 | { | |
164 | unsigned int *p = (unsigned int*)&rFm; | |
e2542fe2 | 165 | #ifdef HOST_WORDS_BIGENDIAN |
a8d3431a FB |
166 | p[0] &= 0x7fffffff; |
167 | #else | |
00406dff | 168 | p[1] &= 0x7fffffff; |
a8d3431a | 169 | #endif |
00406dff FB |
170 | fpa11->fpreg[Fd].fDouble = rFm; |
171 | } | |
172 | break; | |
173 | ||
174 | case RND_CODE: | |
175 | case URD_CODE: | |
20495218 | 176 | fpa11->fpreg[Fd].fDouble = float64_round_to_int(rFm, &fpa11->fp_status); |
00406dff FB |
177 | break; |
178 | ||
179 | case SQT_CODE: | |
20495218 | 180 | fpa11->fpreg[Fd].fDouble = float64_sqrt(rFm, &fpa11->fp_status); |
00406dff FB |
181 | break; |
182 | ||
183 | #if 0 | |
184 | case LOG_CODE: | |
185 | fpa11->fpreg[Fd].fDouble = float64_log(rFm); | |
186 | break; | |
187 | ||
188 | case LGN_CODE: | |
189 | fpa11->fpreg[Fd].fDouble = float64_ln(rFm); | |
190 | break; | |
191 | ||
192 | case EXP_CODE: | |
193 | fpa11->fpreg[Fd].fDouble = float64_exp(rFm); | |
194 | break; | |
195 | ||
196 | case SIN_CODE: | |
197 | fpa11->fpreg[Fd].fDouble = float64_sin(rFm); | |
198 | break; | |
199 | ||
200 | case COS_CODE: | |
201 | fpa11->fpreg[Fd].fDouble = float64_cos(rFm); | |
202 | break; | |
203 | ||
204 | case TAN_CODE: | |
205 | fpa11->fpreg[Fd].fDouble = float64_tan(rFm); | |
206 | break; | |
207 | ||
208 | case ASN_CODE: | |
209 | fpa11->fpreg[Fd].fDouble = float64_arcsin(rFm); | |
210 | break; | |
211 | ||
212 | case ACS_CODE: | |
213 | fpa11->fpreg[Fd].fDouble = float64_arccos(rFm); | |
214 | break; | |
215 | ||
216 | case ATN_CODE: | |
217 | fpa11->fpreg[Fd].fDouble = float64_arctan(rFm); | |
218 | break; | |
219 | #endif | |
220 | ||
221 | case NRM_CODE: | |
222 | break; | |
3b46e624 | 223 | |
00406dff FB |
224 | default: |
225 | { | |
226 | nRc = 0; | |
227 | } | |
228 | } | |
229 | ||
230 | if (0 != nRc) fpa11->fType[Fd] = typeDouble; | |
231 | return nRc; | |
232 | } | |
233 | ||
234 | #if 0 | |
235 | float64 float64_exp(float64 rFm) | |
236 | { | |
237 | return rFm; | |
238 | //series | |
239 | } | |
240 | ||
241 | float64 float64_ln(float64 rFm) | |
242 | { | |
243 | return rFm; | |
244 | //series | |
245 | } | |
246 | ||
247 | float64 float64_sin(float64 rFm) | |
248 | { | |
249 | return rFm; | |
250 | //series | |
251 | } | |
252 | ||
253 | float64 float64_cos(float64 rFm) | |
254 | { | |
255 | return rFm; | |
256 | //series | |
257 | } | |
258 | ||
259 | #if 0 | |
260 | float64 float64_arcsin(float64 rFm) | |
261 | { | |
262 | //series | |
263 | } | |
264 | ||
265 | float64 float64_arctan(float64 rFm) | |
266 | { | |
267 | //series | |
268 | } | |
269 | #endif | |
270 | ||
271 | float64 float64_log(float64 rFm) | |
272 | { | |
273 | return float64_div(float64_ln(rFm),getDoubleConstant(7)); | |
274 | } | |
275 | ||
276 | float64 float64_tan(float64 rFm) | |
277 | { | |
278 | return float64_div(float64_sin(rFm),float64_cos(rFm)); | |
279 | } | |
280 | ||
281 | float64 float64_arccos(float64 rFm) | |
282 | { | |
283 | return rFm; | |
284 | //return float64_sub(halfPi,float64_arcsin(rFm)); | |
285 | } | |
286 | ||
287 | float64 float64_pow(float64 rFn,float64 rFm) | |
288 | { | |
5fafdf24 | 289 | return float64_exp(float64_mul(rFm,float64_ln(rFn))); |
00406dff FB |
290 | } |
291 | ||
292 | float64 float64_pol(float64 rFn,float64 rFm) | |
293 | { | |
5fafdf24 | 294 | return float64_arctan(float64_div(rFn,rFm)); |
00406dff FB |
295 | } |
296 | #endif |