diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/parisc/math-emu/float.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/parisc/math-emu/float.h')
-rw-r--r-- | arch/parisc/math-emu/float.h | 582 |
1 files changed, 582 insertions, 0 deletions
diff --git a/arch/parisc/math-emu/float.h b/arch/parisc/math-emu/float.h new file mode 100644 index 000000000000..ce76f6dfa25b --- /dev/null +++ b/arch/parisc/math-emu/float.h | |||
@@ -0,0 +1,582 @@ | |||
1 | /* | ||
2 | * Linux/PA-RISC Project (http://www.parisc-linux.org/) | ||
3 | * | ||
4 | * Floating-point emulation code | ||
5 | * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.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, or (at your option) | ||
10 | * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
20 | */ | ||
21 | /* | ||
22 | * BEGIN_DESC | ||
23 | * | ||
24 | * File: | ||
25 | * @(#) pa/spmath/float.h $Revision: 1.1 $ | ||
26 | * | ||
27 | * Purpose: | ||
28 | * <<please update with a synopis of the functionality provided by this file>> | ||
29 | * | ||
30 | * BE header: no | ||
31 | * | ||
32 | * Shipped: yes | ||
33 | * /usr/conf/pa/spmath/float.h | ||
34 | * | ||
35 | * END_DESC | ||
36 | */ | ||
37 | |||
38 | #ifdef __NO_PA_HDRS | ||
39 | PA header file -- do not include this header file for non-PA builds. | ||
40 | #endif | ||
41 | |||
42 | #include "fpbits.h" | ||
43 | #include "hppa.h" | ||
44 | /* | ||
45 | * Want to pick up the FPU capability flags, not the PDC structures. | ||
46 | * 'LOCORE' isn't really true in this case, but we don't want the C structures | ||
47 | * so it suits our purposes | ||
48 | */ | ||
49 | #define LOCORE | ||
50 | #include "fpu.h" | ||
51 | |||
52 | /* | ||
53 | * Declare the basic structures for the 3 different | ||
54 | * floating-point precisions. | ||
55 | * | ||
56 | * Single number | ||
57 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
58 | * |s| exp | mantissa | | ||
59 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
60 | */ | ||
61 | #define Sall(object) (object) | ||
62 | #define Ssign(object) Bitfield_extract( 0, 1,object) | ||
63 | #define Ssignedsign(object) Bitfield_signed_extract( 0, 1,object) | ||
64 | #define Sexponent(object) Bitfield_extract( 1, 8,object) | ||
65 | #define Smantissa(object) Bitfield_mask( 9, 23,object) | ||
66 | #define Ssignaling(object) Bitfield_extract( 9, 1,object) | ||
67 | #define Ssignalingnan(object) Bitfield_extract( 1, 9,object) | ||
68 | #define Shigh2mantissa(object) Bitfield_extract( 9, 2,object) | ||
69 | #define Sexponentmantissa(object) Bitfield_mask( 1, 31,object) | ||
70 | #define Ssignexponent(object) Bitfield_extract( 0, 9,object) | ||
71 | #define Shidden(object) Bitfield_extract( 8, 1,object) | ||
72 | #define Shiddenoverflow(object) Bitfield_extract( 7, 1,object) | ||
73 | #define Shiddenhigh7mantissa(object) Bitfield_extract( 8, 8,object) | ||
74 | #define Shiddenhigh3mantissa(object) Bitfield_extract( 8, 4,object) | ||
75 | #define Slow(object) Bitfield_mask( 31, 1,object) | ||
76 | #define Slow4(object) Bitfield_mask( 28, 4,object) | ||
77 | #define Slow31(object) Bitfield_mask( 1, 31,object) | ||
78 | #define Shigh31(object) Bitfield_extract( 0, 31,object) | ||
79 | #define Ssignedhigh31(object) Bitfield_signed_extract( 0, 31,object) | ||
80 | #define Shigh4(object) Bitfield_extract( 0, 4,object) | ||
81 | #define Sbit24(object) Bitfield_extract( 24, 1,object) | ||
82 | #define Sbit28(object) Bitfield_extract( 28, 1,object) | ||
83 | #define Sbit29(object) Bitfield_extract( 29, 1,object) | ||
84 | #define Sbit30(object) Bitfield_extract( 30, 1,object) | ||
85 | #define Sbit31(object) Bitfield_mask( 31, 1,object) | ||
86 | |||
87 | #define Deposit_ssign(object,value) Bitfield_deposit(value,0,1,object) | ||
88 | #define Deposit_sexponent(object,value) Bitfield_deposit(value,1,8,object) | ||
89 | #define Deposit_smantissa(object,value) Bitfield_deposit(value,9,23,object) | ||
90 | #define Deposit_shigh2mantissa(object,value) Bitfield_deposit(value,9,2,object) | ||
91 | #define Deposit_sexponentmantissa(object,value) \ | ||
92 | Bitfield_deposit(value,1,31,object) | ||
93 | #define Deposit_ssignexponent(object,value) Bitfield_deposit(value,0,9,object) | ||
94 | #define Deposit_slow(object,value) Bitfield_deposit(value,31,1,object) | ||
95 | #define Deposit_shigh4(object,value) Bitfield_deposit(value,0,4,object) | ||
96 | |||
97 | #define Is_ssign(object) Bitfield_mask( 0, 1,object) | ||
98 | #define Is_ssignaling(object) Bitfield_mask( 9, 1,object) | ||
99 | #define Is_shidden(object) Bitfield_mask( 8, 1,object) | ||
100 | #define Is_shiddenoverflow(object) Bitfield_mask( 7, 1,object) | ||
101 | #define Is_slow(object) Bitfield_mask( 31, 1,object) | ||
102 | #define Is_sbit24(object) Bitfield_mask( 24, 1,object) | ||
103 | #define Is_sbit28(object) Bitfield_mask( 28, 1,object) | ||
104 | #define Is_sbit29(object) Bitfield_mask( 29, 1,object) | ||
105 | #define Is_sbit30(object) Bitfield_mask( 30, 1,object) | ||
106 | #define Is_sbit31(object) Bitfield_mask( 31, 1,object) | ||
107 | |||
108 | /* | ||
109 | * Double number. | ||
110 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
111 | * |s| exponent | mantissa part 1 | | ||
112 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
113 | * | ||
114 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
115 | * | mantissa part 2 | | ||
116 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
117 | */ | ||
118 | #define Dallp1(object) (object) | ||
119 | #define Dsign(object) Bitfield_extract( 0, 1,object) | ||
120 | #define Dsignedsign(object) Bitfield_signed_extract( 0, 1,object) | ||
121 | #define Dexponent(object) Bitfield_extract( 1, 11,object) | ||
122 | #define Dmantissap1(object) Bitfield_mask( 12, 20,object) | ||
123 | #define Dsignaling(object) Bitfield_extract( 12, 1,object) | ||
124 | #define Dsignalingnan(object) Bitfield_extract( 1, 12,object) | ||
125 | #define Dhigh2mantissa(object) Bitfield_extract( 12, 2,object) | ||
126 | #define Dexponentmantissap1(object) Bitfield_mask( 1, 31,object) | ||
127 | #define Dsignexponent(object) Bitfield_extract( 0, 12,object) | ||
128 | #define Dhidden(object) Bitfield_extract( 11, 1,object) | ||
129 | #define Dhiddenoverflow(object) Bitfield_extract( 10, 1,object) | ||
130 | #define Dhiddenhigh7mantissa(object) Bitfield_extract( 11, 8,object) | ||
131 | #define Dhiddenhigh3mantissa(object) Bitfield_extract( 11, 4,object) | ||
132 | #define Dlowp1(object) Bitfield_mask( 31, 1,object) | ||
133 | #define Dlow31p1(object) Bitfield_mask( 1, 31,object) | ||
134 | #define Dhighp1(object) Bitfield_extract( 0, 1,object) | ||
135 | #define Dhigh4p1(object) Bitfield_extract( 0, 4,object) | ||
136 | #define Dhigh31p1(object) Bitfield_extract( 0, 31,object) | ||
137 | #define Dsignedhigh31p1(object) Bitfield_signed_extract( 0, 31,object) | ||
138 | #define Dbit3p1(object) Bitfield_extract( 3, 1,object) | ||
139 | |||
140 | #define Deposit_dsign(object,value) Bitfield_deposit(value,0,1,object) | ||
141 | #define Deposit_dexponent(object,value) Bitfield_deposit(value,1,11,object) | ||
142 | #define Deposit_dmantissap1(object,value) Bitfield_deposit(value,12,20,object) | ||
143 | #define Deposit_dhigh2mantissa(object,value) Bitfield_deposit(value,12,2,object) | ||
144 | #define Deposit_dexponentmantissap1(object,value) \ | ||
145 | Bitfield_deposit(value,1,31,object) | ||
146 | #define Deposit_dsignexponent(object,value) Bitfield_deposit(value,0,12,object) | ||
147 | #define Deposit_dlowp1(object,value) Bitfield_deposit(value,31,1,object) | ||
148 | #define Deposit_dhigh4p1(object,value) Bitfield_deposit(value,0,4,object) | ||
149 | |||
150 | #define Is_dsign(object) Bitfield_mask( 0, 1,object) | ||
151 | #define Is_dsignaling(object) Bitfield_mask( 12, 1,object) | ||
152 | #define Is_dhidden(object) Bitfield_mask( 11, 1,object) | ||
153 | #define Is_dhiddenoverflow(object) Bitfield_mask( 10, 1,object) | ||
154 | #define Is_dlowp1(object) Bitfield_mask( 31, 1,object) | ||
155 | #define Is_dhighp1(object) Bitfield_mask( 0, 1,object) | ||
156 | #define Is_dbit3p1(object) Bitfield_mask( 3, 1,object) | ||
157 | |||
158 | #define Dallp2(object) (object) | ||
159 | #define Dmantissap2(object) (object) | ||
160 | #define Dlowp2(object) Bitfield_mask( 31, 1,object) | ||
161 | #define Dlow4p2(object) Bitfield_mask( 28, 4,object) | ||
162 | #define Dlow31p2(object) Bitfield_mask( 1, 31,object) | ||
163 | #define Dhighp2(object) Bitfield_extract( 0, 1,object) | ||
164 | #define Dhigh31p2(object) Bitfield_extract( 0, 31,object) | ||
165 | #define Dbit2p2(object) Bitfield_extract( 2, 1,object) | ||
166 | #define Dbit3p2(object) Bitfield_extract( 3, 1,object) | ||
167 | #define Dbit21p2(object) Bitfield_extract( 21, 1,object) | ||
168 | #define Dbit28p2(object) Bitfield_extract( 28, 1,object) | ||
169 | #define Dbit29p2(object) Bitfield_extract( 29, 1,object) | ||
170 | #define Dbit30p2(object) Bitfield_extract( 30, 1,object) | ||
171 | #define Dbit31p2(object) Bitfield_mask( 31, 1,object) | ||
172 | |||
173 | #define Deposit_dlowp2(object,value) Bitfield_deposit(value,31,1,object) | ||
174 | |||
175 | #define Is_dlowp2(object) Bitfield_mask( 31, 1,object) | ||
176 | #define Is_dhighp2(object) Bitfield_mask( 0, 1,object) | ||
177 | #define Is_dbit2p2(object) Bitfield_mask( 2, 1,object) | ||
178 | #define Is_dbit3p2(object) Bitfield_mask( 3, 1,object) | ||
179 | #define Is_dbit21p2(object) Bitfield_mask( 21, 1,object) | ||
180 | #define Is_dbit28p2(object) Bitfield_mask( 28, 1,object) | ||
181 | #define Is_dbit29p2(object) Bitfield_mask( 29, 1,object) | ||
182 | #define Is_dbit30p2(object) Bitfield_mask( 30, 1,object) | ||
183 | #define Is_dbit31p2(object) Bitfield_mask( 31, 1,object) | ||
184 | |||
185 | /* | ||
186 | * Quad number. | ||
187 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
188 | * |s| exponent | mantissa part 1 | | ||
189 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
190 | * | ||
191 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
192 | * | mantissa part 2 | | ||
193 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
194 | * | ||
195 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
196 | * | mantissa part 3 | | ||
197 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
198 | * | ||
199 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
200 | * | mantissa part 4 | | ||
201 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
202 | */ | ||
203 | typedef struct | ||
204 | { | ||
205 | union | ||
206 | { | ||
207 | struct { unsigned qallp1; } u_qallp1; | ||
208 | /* Not needed for now... | ||
209 | Bitfield_extract( 0, 1,u_qsign,qsign) | ||
210 | Bitfield_signed_extract( 0, 1,u_qsignedsign,qsignedsign) | ||
211 | Bitfield_extract( 1, 15,u_qexponent,qexponent) | ||
212 | Bitfield_extract(16, 16,u_qmantissap1,qmantissap1) | ||
213 | Bitfield_extract(16, 1,u_qsignaling,qsignaling) | ||
214 | Bitfield_extract(1, 16,u_qsignalingnan,qsignalingnan) | ||
215 | Bitfield_extract(16, 2,u_qhigh2mantissa,qhigh2mantissa) | ||
216 | Bitfield_extract( 1, 31,u_qexponentmantissap1,qexponentmantissap1) | ||
217 | Bitfield_extract( 0, 16,u_qsignexponent,qsignexponent) | ||
218 | Bitfield_extract(15, 1,u_qhidden,qhidden) | ||
219 | Bitfield_extract(14, 1,u_qhiddenoverflow,qhiddenoverflow) | ||
220 | Bitfield_extract(15, 8,u_qhiddenhigh7mantissa,qhiddenhigh7mantissa) | ||
221 | Bitfield_extract(15, 4,u_qhiddenhigh3mantissa,qhiddenhigh3mantissa) | ||
222 | Bitfield_extract(31, 1,u_qlowp1,qlowp1) | ||
223 | Bitfield_extract( 1, 31,u_qlow31p1,qlow31p1) | ||
224 | Bitfield_extract( 0, 1,u_qhighp1,qhighp1) | ||
225 | Bitfield_extract( 0, 4,u_qhigh4p1,qhigh4p1) | ||
226 | Bitfield_extract( 0, 31,u_qhigh31p1,qhigh31p1) | ||
227 | */ | ||
228 | } quad_u1; | ||
229 | union | ||
230 | { | ||
231 | struct { unsigned qallp2; } u_qallp2; | ||
232 | /* Not needed for now... | ||
233 | Bitfield_extract(31, 1,u_qlowp2,qlowp2) | ||
234 | Bitfield_extract( 1, 31,u_qlow31p2,qlow31p2) | ||
235 | Bitfield_extract( 0, 1,u_qhighp2,qhighp2) | ||
236 | Bitfield_extract( 0, 31,u_qhigh31p2,qhigh31p2) | ||
237 | */ | ||
238 | } quad_u2; | ||
239 | union | ||
240 | { | ||
241 | struct { unsigned qallp3; } u_qallp3; | ||
242 | /* Not needed for now... | ||
243 | Bitfield_extract(31, 1,u_qlowp3,qlowp3) | ||
244 | Bitfield_extract( 1, 31,u_qlow31p3,qlow31p3) | ||
245 | Bitfield_extract( 0, 1,u_qhighp3,qhighp3) | ||
246 | Bitfield_extract( 0, 31,u_qhigh31p3,qhigh31p3) | ||
247 | */ | ||
248 | } quad_u3; | ||
249 | union | ||
250 | { | ||
251 | struct { unsigned qallp4; } u_qallp4; | ||
252 | /* Not need for now... | ||
253 | Bitfield_extract(31, 1,u_qlowp4,qlowp4) | ||
254 | Bitfield_extract( 1, 31,u_qlow31p4,qlow31p4) | ||
255 | Bitfield_extract( 0, 1,u_qhighp4,qhighp4) | ||
256 | Bitfield_extract( 0, 31,u_qhigh31p4,qhigh31p4) | ||
257 | */ | ||
258 | } quad_u4; | ||
259 | } quad_floating_point; | ||
260 | |||
261 | /* Extension - An additional structure to hold the guard, round and | ||
262 | * sticky bits during computations. | ||
263 | */ | ||
264 | #define Extall(object) (object) | ||
265 | #define Extsign(object) Bitfield_extract( 0, 1,object) | ||
266 | #define Exthigh31(object) Bitfield_extract( 0, 31,object) | ||
267 | #define Extlow31(object) Bitfield_extract( 1, 31,object) | ||
268 | #define Extlow(object) Bitfield_extract( 31, 1,object) | ||
269 | |||
270 | /* | ||
271 | * Single extended - The upper word is just like single precision, | ||
272 | * but one additional word of mantissa is needed. | ||
273 | */ | ||
274 | #define Sextallp1(object) (object) | ||
275 | #define Sextallp2(object) (object) | ||
276 | #define Sextlowp1(object) Bitfield_extract( 31, 1,object) | ||
277 | #define Sexthighp2(object) Bitfield_extract( 0, 1,object) | ||
278 | #define Sextlow31p2(object) Bitfield_extract( 1, 31,object) | ||
279 | #define Sexthiddenoverflow(object) Bitfield_extract( 4, 1,object) | ||
280 | #define Is_sexthiddenoverflow(object) Bitfield_mask( 4, 1,object) | ||
281 | |||
282 | /* | ||
283 | * Double extended - The upper two words are just like double precision, | ||
284 | * but two additional words of mantissa are needed. | ||
285 | */ | ||
286 | #define Dextallp1(object) (object) | ||
287 | #define Dextallp2(object) (object) | ||
288 | #define Dextallp3(object) (object) | ||
289 | #define Dextallp4(object) (object) | ||
290 | #define Dextlowp2(object) Bitfield_extract( 31, 1,object) | ||
291 | #define Dexthighp3(object) Bitfield_extract( 0, 1,object) | ||
292 | #define Dextlow31p3(object) Bitfield_extract( 1, 31,object) | ||
293 | #define Dexthiddenoverflow(object) Bitfield_extract( 10, 1,object) | ||
294 | #define Is_dexthiddenoverflow(object) Bitfield_mask( 10, 1,object) | ||
295 | #define Deposit_dextlowp4(object,value) Bitfield_deposit(value,31,1,object) | ||
296 | |||
297 | /* | ||
298 | * Declare the basic structures for the 3 different | ||
299 | * fixed-point precisions. | ||
300 | * | ||
301 | * Single number | ||
302 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
303 | * |s| integer | | ||
304 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
305 | */ | ||
306 | typedef int sgl_integer; | ||
307 | |||
308 | /* | ||
309 | * Double number. | ||
310 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
311 | * |s| high integer | | ||
312 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
313 | * | ||
314 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
315 | * | low integer | | ||
316 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
317 | */ | ||
318 | struct dint { | ||
319 | int wd0; | ||
320 | unsigned int wd1; | ||
321 | }; | ||
322 | |||
323 | struct dblwd { | ||
324 | unsigned int wd0; | ||
325 | unsigned int wd1; | ||
326 | }; | ||
327 | |||
328 | /* | ||
329 | * Quad number. | ||
330 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
331 | * |s| integer part1 | | ||
332 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
333 | * | ||
334 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
335 | * | integer part 2 | | ||
336 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
337 | * | ||
338 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
339 | * | integer part 3 | | ||
340 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
341 | * | ||
342 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
343 | * | integer part 4 | | ||
344 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
345 | */ | ||
346 | |||
347 | struct quadwd { | ||
348 | int wd0; | ||
349 | unsigned int wd1; | ||
350 | unsigned int wd2; | ||
351 | unsigned int wd3; | ||
352 | }; | ||
353 | |||
354 | typedef struct quadwd quad_integer; | ||
355 | |||
356 | |||
357 | /* useful typedefs */ | ||
358 | typedef unsigned int sgl_floating_point; | ||
359 | typedef struct dblwd dbl_floating_point; | ||
360 | typedef struct dint dbl_integer; | ||
361 | typedef struct dblwd dbl_unsigned; | ||
362 | |||
363 | /* | ||
364 | * Define the different precisions' parameters. | ||
365 | */ | ||
366 | #define SGL_BITLENGTH 32 | ||
367 | #define SGL_EMAX 127 | ||
368 | #define SGL_EMIN (-126) | ||
369 | #define SGL_BIAS 127 | ||
370 | #define SGL_WRAP 192 | ||
371 | #define SGL_INFINITY_EXPONENT (SGL_EMAX+SGL_BIAS+1) | ||
372 | #define SGL_THRESHOLD 32 | ||
373 | #define SGL_EXP_LENGTH 8 | ||
374 | #define SGL_P 24 | ||
375 | |||
376 | #define DBL_BITLENGTH 64 | ||
377 | #define DBL_EMAX 1023 | ||
378 | #define DBL_EMIN (-1022) | ||
379 | #define DBL_BIAS 1023 | ||
380 | #define DBL_WRAP 1536 | ||
381 | #define DBL_INFINITY_EXPONENT (DBL_EMAX+DBL_BIAS+1) | ||
382 | #define DBL_THRESHOLD 64 | ||
383 | #define DBL_EXP_LENGTH 11 | ||
384 | #define DBL_P 53 | ||
385 | |||
386 | #define QUAD_BITLENGTH 128 | ||
387 | #define QUAD_EMAX 16383 | ||
388 | #define QUAD_EMIN (-16382) | ||
389 | #define QUAD_BIAS 16383 | ||
390 | #define QUAD_WRAP 24576 | ||
391 | #define QUAD_INFINITY_EXPONENT (QUAD_EMAX+QUAD_BIAS+1) | ||
392 | #define QUAD_P 113 | ||
393 | |||
394 | /* Boolean Values etc. */ | ||
395 | #define FALSE 0 | ||
396 | #define TRUE (!FALSE) | ||
397 | #define NOT ! | ||
398 | #define XOR ^ | ||
399 | |||
400 | /* other constants */ | ||
401 | #undef NULL | ||
402 | #define NULL 0 | ||
403 | #define NIL 0 | ||
404 | #define SGL 0 | ||
405 | #define DBL 1 | ||
406 | #define BADFMT 2 | ||
407 | #define QUAD 3 | ||
408 | |||
409 | |||
410 | /* Types */ | ||
411 | typedef int boolean; | ||
412 | typedef int FORMAT; | ||
413 | typedef int VOID; | ||
414 | |||
415 | |||
416 | /* Declare status register equivalent to FPUs architecture. | ||
417 | * | ||
418 | * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1 | ||
419 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
420 | * |V|Z|O|U|I|C| rsv | model | version |RM |rsv|T|r|V|Z|O|U|I| | ||
421 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
422 | */ | ||
423 | #define Cbit(object) Bitfield_extract( 5, 1,object) | ||
424 | #define Tbit(object) Bitfield_extract( 25, 1,object) | ||
425 | #define Roundingmode(object) Bitfield_extract( 21, 2,object) | ||
426 | #define Invalidtrap(object) Bitfield_extract( 27, 1,object) | ||
427 | #define Divisionbyzerotrap(object) Bitfield_extract( 28, 1,object) | ||
428 | #define Overflowtrap(object) Bitfield_extract( 29, 1,object) | ||
429 | #define Underflowtrap(object) Bitfield_extract( 30, 1,object) | ||
430 | #define Inexacttrap(object) Bitfield_extract( 31, 1,object) | ||
431 | #define Invalidflag(object) Bitfield_extract( 0, 1,object) | ||
432 | #define Divisionbyzeroflag(object) Bitfield_extract( 1, 1,object) | ||
433 | #define Overflowflag(object) Bitfield_extract( 2, 1,object) | ||
434 | #define Underflowflag(object) Bitfield_extract( 3, 1,object) | ||
435 | #define Inexactflag(object) Bitfield_extract( 4, 1,object) | ||
436 | #define Allflags(object) Bitfield_extract( 0, 5,object) | ||
437 | |||
438 | /* Definitions relevant to the status register */ | ||
439 | |||
440 | /* Rounding Modes */ | ||
441 | #define ROUNDNEAREST 0 | ||
442 | #define ROUNDZERO 1 | ||
443 | #define ROUNDPLUS 2 | ||
444 | #define ROUNDMINUS 3 | ||
445 | |||
446 | /* Exceptions */ | ||
447 | #define NOEXCEPTION 0x0 | ||
448 | #define INVALIDEXCEPTION 0x20 | ||
449 | #define DIVISIONBYZEROEXCEPTION 0x10 | ||
450 | #define OVERFLOWEXCEPTION 0x08 | ||
451 | #define UNDERFLOWEXCEPTION 0x04 | ||
452 | #define INEXACTEXCEPTION 0x02 | ||
453 | #define UNIMPLEMENTEDEXCEPTION 0x01 | ||
454 | |||
455 | /* New exceptions for the 2E Opcode */ | ||
456 | #define OPC_2E_INVALIDEXCEPTION 0x30 | ||
457 | #define OPC_2E_OVERFLOWEXCEPTION 0x18 | ||
458 | #define OPC_2E_UNDERFLOWEXCEPTION 0x0c | ||
459 | #define OPC_2E_INEXACTEXCEPTION 0x12 | ||
460 | |||
461 | /* Declare exception registers equivalent to FPUs architecture | ||
462 | * | ||
463 | * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1 | ||
464 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
465 | * |excepttype | r1 | r2/ext | operation |parm |n| t/cond | | ||
466 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
467 | */ | ||
468 | #define Allexception(object) (object) | ||
469 | #define Exceptiontype(object) Bitfield_extract( 0, 6,object) | ||
470 | #define Instructionfield(object) Bitfield_mask( 6,26,object) | ||
471 | #define Parmfield(object) Bitfield_extract( 23, 3,object) | ||
472 | #define Rabit(object) Bitfield_extract( 24, 1,object) | ||
473 | #define Ibit(object) Bitfield_extract( 25, 1,object) | ||
474 | |||
475 | #define Set_exceptiontype(object,value) Bitfield_deposit(value, 0, 6,object) | ||
476 | #define Set_parmfield(object,value) Bitfield_deposit(value, 23, 3,object) | ||
477 | #define Set_exceptiontype_and_instr_field(exception,instruction,object) \ | ||
478 | object = exception << 26 | instruction | ||
479 | |||
480 | /* Declare the condition field | ||
481 | * | ||
482 | * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1 | ||
483 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
484 | * | |G|L|E|U|X| | ||
485 | * +-------+-------+-------+-------+-------+-------+-------+-------+ | ||
486 | */ | ||
487 | #define Allexception(object) (object) | ||
488 | #define Greaterthanbit(object) Bitfield_extract( 27, 1,object) | ||
489 | #define Lessthanbit(object) Bitfield_extract( 28, 1,object) | ||
490 | #define Equalbit(object) Bitfield_extract( 29, 1,object) | ||
491 | #define Unorderedbit(object) Bitfield_extract( 30, 1,object) | ||
492 | #define Exceptionbit(object) Bitfield_extract( 31, 1,object) | ||
493 | |||
494 | /* An alias name for the status register */ | ||
495 | #define Fpustatus_register (*status) | ||
496 | |||
497 | /************************************************** | ||
498 | * Status register referencing and manipulation. * | ||
499 | **************************************************/ | ||
500 | |||
501 | /* Rounding mode */ | ||
502 | #define Rounding_mode() Roundingmode(Fpustatus_register) | ||
503 | #define Is_rounding_mode(rmode) \ | ||
504 | (Roundingmode(Fpustatus_register) == rmode) | ||
505 | #define Set_rounding_mode(value) \ | ||
506 | Bitfield_deposit(value,21,2,Fpustatus_register) | ||
507 | |||
508 | /* Boolean testing of the trap enable bits */ | ||
509 | #define Is_invalidtrap_enabled() Invalidtrap(Fpustatus_register) | ||
510 | #define Is_divisionbyzerotrap_enabled() Divisionbyzerotrap(Fpustatus_register) | ||
511 | #define Is_overflowtrap_enabled() Overflowtrap(Fpustatus_register) | ||
512 | #define Is_underflowtrap_enabled() Underflowtrap(Fpustatus_register) | ||
513 | #define Is_inexacttrap_enabled() Inexacttrap(Fpustatus_register) | ||
514 | |||
515 | /* Set the indicated flags in the status register */ | ||
516 | #define Set_invalidflag() Bitfield_deposit(1,0,1,Fpustatus_register) | ||
517 | #define Set_divisionbyzeroflag() Bitfield_deposit(1,1,1,Fpustatus_register) | ||
518 | #define Set_overflowflag() Bitfield_deposit(1,2,1,Fpustatus_register) | ||
519 | #define Set_underflowflag() Bitfield_deposit(1,3,1,Fpustatus_register) | ||
520 | #define Set_inexactflag() Bitfield_deposit(1,4,1,Fpustatus_register) | ||
521 | |||
522 | #define Clear_all_flags() Bitfield_deposit(0,0,5,Fpustatus_register) | ||
523 | |||
524 | /* Manipulate the trap and condition code bits (tbit and cbit) */ | ||
525 | #define Set_tbit() Bitfield_deposit(1,25,1,Fpustatus_register) | ||
526 | #define Clear_tbit() Bitfield_deposit(0,25,1,Fpustatus_register) | ||
527 | #define Is_tbit_set() Tbit(Fpustatus_register) | ||
528 | #define Is_cbit_set() Cbit(Fpustatus_register) | ||
529 | |||
530 | #define Set_status_cbit(value) \ | ||
531 | Bitfield_deposit(value,5,1,Fpustatus_register) | ||
532 | |||
533 | /******************************* | ||
534 | * Condition field referencing * | ||
535 | *******************************/ | ||
536 | #define Unordered(cond) Unorderedbit(cond) | ||
537 | #define Equal(cond) Equalbit(cond) | ||
538 | #define Lessthan(cond) Lessthanbit(cond) | ||
539 | #define Greaterthan(cond) Greaterthanbit(cond) | ||
540 | #define Exception(cond) Exceptionbit(cond) | ||
541 | |||
542 | |||
543 | /* Defines for the extension */ | ||
544 | #define Ext_isone_sign(extent) (Extsign(extent)) | ||
545 | #define Ext_isnotzero(extent) \ | ||
546 | (Extall(extent)) | ||
547 | #define Ext_isnotzero_lower(extent) \ | ||
548 | (Extlow31(extent)) | ||
549 | #define Ext_leftshiftby1(extent) \ | ||
550 | Extall(extent) <<= 1 | ||
551 | #define Ext_negate(extent) \ | ||
552 | (int )Extall(extent) = 0 - (int )Extall(extent) | ||
553 | #define Ext_setone_low(extent) Bitfield_deposit(1,31,1,extent) | ||
554 | #define Ext_setzero(extent) Extall(extent) = 0 | ||
555 | |||
556 | typedef int operation; | ||
557 | |||
558 | /* error messages */ | ||
559 | |||
560 | #define NONE 0 | ||
561 | #define UNDEFFPINST 1 | ||
562 | |||
563 | /* Function definitions: opcode, opclass */ | ||
564 | #define FTEST (1<<2) | 0 | ||
565 | #define FCPY (2<<2) | 0 | ||
566 | #define FABS (3<<2) | 0 | ||
567 | #define FSQRT (4<<2) | 0 | ||
568 | #define FRND (5<<2) | 0 | ||
569 | |||
570 | #define FCNVFF (0<<2) | 1 | ||
571 | #define FCNVXF (1<<2) | 1 | ||
572 | #define FCNVFX (2<<2) | 1 | ||
573 | #define FCNVFXT (3<<2) | 1 | ||
574 | |||
575 | #define FCMP (0<<2) | 2 | ||
576 | |||
577 | #define FADD (0<<2) | 3 | ||
578 | #define FSUB (1<<2) | 3 | ||
579 | #define FMPY (2<<2) | 3 | ||
580 | #define FDIV (3<<2) | 3 | ||
581 | #define FREM (4<<2) | 3 | ||
582 | |||