Commit | Line | Data |
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1da177e4 LT |
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 | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | ||
22 | #include "fpa11.h" | |
23 | #include "softfloat.h" | |
24 | #include "fpopcode.h" | |
25 | ||
26 | floatx80 floatx80_exp(floatx80 Fm); | |
27 | floatx80 floatx80_ln(floatx80 Fm); | |
28 | floatx80 floatx80_sin(floatx80 rFm); | |
29 | floatx80 floatx80_cos(floatx80 rFm); | |
30 | floatx80 floatx80_arcsin(floatx80 rFm); | |
31 | floatx80 floatx80_arctan(floatx80 rFm); | |
32 | floatx80 floatx80_log(floatx80 rFm); | |
33 | floatx80 floatx80_tan(floatx80 rFm); | |
34 | floatx80 floatx80_arccos(floatx80 rFm); | |
35 | floatx80 floatx80_pow(floatx80 rFn,floatx80 rFm); | |
36 | floatx80 floatx80_pol(floatx80 rFn,floatx80 rFm); | |
37 | ||
38 | unsigned int ExtendedCPDO(const unsigned int opcode) | |
39 | { | |
40 | FPA11 *fpa11 = GET_FPA11(); | |
41 | floatx80 rFm, rFn; | |
42 | unsigned int Fd, Fm, Fn, nRc = 1; | |
43 | ||
44 | //printk("ExtendedCPDO(0x%08x)\n",opcode); | |
45 | ||
46 | Fm = getFm(opcode); | |
47 | if (CONSTANT_FM(opcode)) | |
48 | { | |
49 | rFm = getExtendedConstant(Fm); | |
50 | } | |
51 | else | |
52 | { | |
53 | switch (fpa11->fType[Fm]) | |
54 | { | |
55 | case typeSingle: | |
56 | rFm = float32_to_floatx80(fpa11->fpreg[Fm].fSingle); | |
57 | break; | |
58 | ||
59 | case typeDouble: | |
60 | rFm = float64_to_floatx80(fpa11->fpreg[Fm].fDouble); | |
61 | break; | |
62 | ||
63 | case typeExtended: | |
64 | rFm = fpa11->fpreg[Fm].fExtended; | |
65 | break; | |
66 | ||
67 | default: return 0; | |
68 | } | |
69 | } | |
70 | ||
71 | if (!MONADIC_INSTRUCTION(opcode)) | |
72 | { | |
73 | Fn = getFn(opcode); | |
74 | switch (fpa11->fType[Fn]) | |
75 | { | |
76 | case typeSingle: | |
77 | rFn = float32_to_floatx80(fpa11->fpreg[Fn].fSingle); | |
78 | break; | |
79 | ||
80 | case typeDouble: | |
81 | rFn = float64_to_floatx80(fpa11->fpreg[Fn].fDouble); | |
82 | break; | |
83 | ||
84 | case typeExtended: | |
85 | rFn = fpa11->fpreg[Fn].fExtended; | |
86 | break; | |
87 | ||
88 | default: return 0; | |
89 | } | |
90 | } | |
91 | ||
92 | Fd = getFd(opcode); | |
93 | switch (opcode & MASK_ARITHMETIC_OPCODE) | |
94 | { | |
95 | /* dyadic opcodes */ | |
96 | case ADF_CODE: | |
97 | fpa11->fpreg[Fd].fExtended = floatx80_add(rFn,rFm); | |
98 | break; | |
99 | ||
100 | case MUF_CODE: | |
101 | case FML_CODE: | |
102 | fpa11->fpreg[Fd].fExtended = floatx80_mul(rFn,rFm); | |
103 | break; | |
104 | ||
105 | case SUF_CODE: | |
106 | fpa11->fpreg[Fd].fExtended = floatx80_sub(rFn,rFm); | |
107 | break; | |
108 | ||
109 | case RSF_CODE: | |
110 | fpa11->fpreg[Fd].fExtended = floatx80_sub(rFm,rFn); | |
111 | break; | |
112 | ||
113 | case DVF_CODE: | |
114 | case FDV_CODE: | |
115 | fpa11->fpreg[Fd].fExtended = floatx80_div(rFn,rFm); | |
116 | break; | |
117 | ||
118 | case RDF_CODE: | |
119 | case FRD_CODE: | |
120 | fpa11->fpreg[Fd].fExtended = floatx80_div(rFm,rFn); | |
121 | break; | |
122 | ||
123 | #if 0 | |
124 | case POW_CODE: | |
125 | fpa11->fpreg[Fd].fExtended = floatx80_pow(rFn,rFm); | |
126 | break; | |
127 | ||
128 | case RPW_CODE: | |
129 | fpa11->fpreg[Fd].fExtended = floatx80_pow(rFm,rFn); | |
130 | break; | |
131 | #endif | |
132 | ||
133 | case RMF_CODE: | |
134 | fpa11->fpreg[Fd].fExtended = floatx80_rem(rFn,rFm); | |
135 | break; | |
136 | ||
137 | #if 0 | |
138 | case POL_CODE: | |
139 | fpa11->fpreg[Fd].fExtended = floatx80_pol(rFn,rFm); | |
140 | break; | |
141 | #endif | |
142 | ||
143 | /* monadic opcodes */ | |
144 | case MVF_CODE: | |
145 | fpa11->fpreg[Fd].fExtended = rFm; | |
146 | break; | |
147 | ||
148 | case MNF_CODE: | |
149 | rFm.high ^= 0x8000; | |
150 | fpa11->fpreg[Fd].fExtended = rFm; | |
151 | break; | |
152 | ||
153 | case ABS_CODE: | |
154 | rFm.high &= 0x7fff; | |
155 | fpa11->fpreg[Fd].fExtended = rFm; | |
156 | break; | |
157 | ||
158 | case RND_CODE: | |
159 | case URD_CODE: | |
160 | fpa11->fpreg[Fd].fExtended = floatx80_round_to_int(rFm); | |
161 | break; | |
162 | ||
163 | case SQT_CODE: | |
164 | fpa11->fpreg[Fd].fExtended = floatx80_sqrt(rFm); | |
165 | break; | |
166 | ||
167 | #if 0 | |
168 | case LOG_CODE: | |
169 | fpa11->fpreg[Fd].fExtended = floatx80_log(rFm); | |
170 | break; | |
171 | ||
172 | case LGN_CODE: | |
173 | fpa11->fpreg[Fd].fExtended = floatx80_ln(rFm); | |
174 | break; | |
175 | ||
176 | case EXP_CODE: | |
177 | fpa11->fpreg[Fd].fExtended = floatx80_exp(rFm); | |
178 | break; | |
179 | ||
180 | case SIN_CODE: | |
181 | fpa11->fpreg[Fd].fExtended = floatx80_sin(rFm); | |
182 | break; | |
183 | ||
184 | case COS_CODE: | |
185 | fpa11->fpreg[Fd].fExtended = floatx80_cos(rFm); | |
186 | break; | |
187 | ||
188 | case TAN_CODE: | |
189 | fpa11->fpreg[Fd].fExtended = floatx80_tan(rFm); | |
190 | break; | |
191 | ||
192 | case ASN_CODE: | |
193 | fpa11->fpreg[Fd].fExtended = floatx80_arcsin(rFm); | |
194 | break; | |
195 | ||
196 | case ACS_CODE: | |
197 | fpa11->fpreg[Fd].fExtended = floatx80_arccos(rFm); | |
198 | break; | |
199 | ||
200 | case ATN_CODE: | |
201 | fpa11->fpreg[Fd].fExtended = floatx80_arctan(rFm); | |
202 | break; | |
203 | #endif | |
204 | ||
205 | case NRM_CODE: | |
206 | break; | |
207 | ||
208 | default: | |
209 | { | |
210 | nRc = 0; | |
211 | } | |
212 | } | |
213 | ||
214 | if (0 != nRc) fpa11->fType[Fd] = typeExtended; | |
215 | return nRc; | |
216 | } | |
217 | ||
218 | #if 0 | |
219 | floatx80 floatx80_exp(floatx80 Fm) | |
220 | { | |
221 | //series | |
222 | } | |
223 | ||
224 | floatx80 floatx80_ln(floatx80 Fm) | |
225 | { | |
226 | //series | |
227 | } | |
228 | ||
229 | floatx80 floatx80_sin(floatx80 rFm) | |
230 | { | |
231 | //series | |
232 | } | |
233 | ||
234 | floatx80 floatx80_cos(floatx80 rFm) | |
235 | { | |
236 | //series | |
237 | } | |
238 | ||
239 | floatx80 floatx80_arcsin(floatx80 rFm) | |
240 | { | |
241 | //series | |
242 | } | |
243 | ||
244 | floatx80 floatx80_arctan(floatx80 rFm) | |
245 | { | |
246 | //series | |
247 | } | |
248 | ||
249 | floatx80 floatx80_log(floatx80 rFm) | |
250 | { | |
251 | return floatx80_div(floatx80_ln(rFm),getExtendedConstant(7)); | |
252 | } | |
253 | ||
254 | floatx80 floatx80_tan(floatx80 rFm) | |
255 | { | |
256 | return floatx80_div(floatx80_sin(rFm),floatx80_cos(rFm)); | |
257 | } | |
258 | ||
259 | floatx80 floatx80_arccos(floatx80 rFm) | |
260 | { | |
261 | //return floatx80_sub(halfPi,floatx80_arcsin(rFm)); | |
262 | } | |
263 | ||
264 | floatx80 floatx80_pow(floatx80 rFn,floatx80 rFm) | |
265 | { | |
266 | return floatx80_exp(floatx80_mul(rFm,floatx80_ln(rFn))); | |
267 | } | |
268 | ||
269 | floatx80 floatx80_pol(floatx80 rFn,floatx80 rFm) | |
270 | { | |
271 | return floatx80_arctan(floatx80_div(rFn,rFm)); | |
272 | } | |
273 | #endif |