tmp105: Correct handling of temperature limit checks
[qemu.git] / linux-user / arm / nwfpe / double_cpdo.c
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, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "qemu/osdep.h"
22 #include "fpa11.h"
23 #include "fpu/softfloat.h"
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();
41 float64 rFm, rFn = float64_zero;
42 unsigned int Fd, Fm, Fn, nRc = 1;
43
44 //printk("DoubleCPDO(0x%08x)\n",opcode);
45
46 Fm = getFm(opcode);
47 if (CONSTANT_FM(opcode))
48 {
49 rFm = getDoubleConstant(Fm);
50 }
51 else
52 {
53 switch (fpa11->fType[Fm])
54 {
55 case typeSingle:
56 rFm = float32_to_float64(fpa11->fpreg[Fm].fSingle, &fpa11->fp_status);
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:
82 rFn = float32_to_float64(fpa11->fpreg[Fn].fSingle, &fpa11->fp_status);
83 break;
84
85 case typeDouble:
86 rFn = fpa11->fpreg[Fn].fDouble;
87 break;
88
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:
99 fpa11->fpreg[Fd].fDouble = float64_add(rFn,rFm, &fpa11->fp_status);
100 break;
101
102 case MUF_CODE:
103 case FML_CODE:
104 fpa11->fpreg[Fd].fDouble = float64_mul(rFn,rFm, &fpa11->fp_status);
105 break;
106
107 case SUF_CODE:
108 fpa11->fpreg[Fd].fDouble = float64_sub(rFn,rFm, &fpa11->fp_status);
109 break;
110
111 case RSF_CODE:
112 fpa11->fpreg[Fd].fDouble = float64_sub(rFm,rFn, &fpa11->fp_status);
113 break;
114
115 case DVF_CODE:
116 case FDV_CODE:
117 fpa11->fpreg[Fd].fDouble = float64_div(rFn,rFm, &fpa11->fp_status);
118 break;
119
120 case RDF_CODE:
121 case FRD_CODE:
122 fpa11->fpreg[Fd].fDouble = float64_div(rFm,rFn, &fpa11->fp_status);
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:
136 fpa11->fpreg[Fd].fDouble = float64_rem(rFn,rFm, &fpa11->fp_status);
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;
153 #ifdef HOST_WORDS_BIGENDIAN
154 p[0] ^= 0x80000000;
155 #else
156 p[1] ^= 0x80000000;
157 #endif
158 fpa11->fpreg[Fd].fDouble = rFm;
159 }
160 break;
161
162 case ABS_CODE:
163 {
164 unsigned int *p = (unsigned int*)&rFm;
165 #ifdef HOST_WORDS_BIGENDIAN
166 p[0] &= 0x7fffffff;
167 #else
168 p[1] &= 0x7fffffff;
169 #endif
170 fpa11->fpreg[Fd].fDouble = rFm;
171 }
172 break;
173
174 case RND_CODE:
175 case URD_CODE:
176 fpa11->fpreg[Fd].fDouble = float64_round_to_int(rFm, &fpa11->fp_status);
177 break;
178
179 case SQT_CODE:
180 fpa11->fpreg[Fd].fDouble = float64_sqrt(rFm, &fpa11->fp_status);
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;
223
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 {
289 return float64_exp(float64_mul(rFm,float64_ln(rFn)));
290 }
291
292 float64 float64_pol(float64 rFn,float64 rFm)
293 {
294 return float64_arctan(float64_div(rFn,rFm));
295 }
296 #endif