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fpu.h
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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) <[email protected]>
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/fp/fpu.h $Revision: 1.1 $
26  *
27  * Purpose:
28  * <<please update with a synopis of the functionality provided by this file>>
29  *
30  *
31  * END_DESC
32 */
33 
34 #ifdef __NO_PA_HDRS
35  PA header file -- do not include this header file for non-PA builds.
36 #endif
37 
38 
39 #ifndef _MACHINE_FPU_INCLUDED /* allows multiple inclusion */
40 #define _MACHINE_FPU_INCLUDED
41 
42 #if 0
43 #ifndef _SYS_STDSYMS_INCLUDED
44 # include <sys/stdsyms.h>
45 #endif /* _SYS_STDSYMS_INCLUDED */
46 #include <machine/pdc/pdc_rqsts.h>
47 #endif
48 
49 #define PA83_FPU_FLAG 0x00000001
50 #define PA89_FPU_FLAG 0x00000002
51 #define PA2_0_FPU_FLAG 0x00000010
52 
53 #define TIMEX_EXTEN_FLAG 0x00000004
54 
55 #define ROLEX_EXTEN_FLAG 0x00000008
56 #define COPR_FP 0x00000080 /* Floating point -- Coprocessor 0 */
57 #define SFU_MPY_DIVIDE 0x00008000 /* Multiply/Divide __ SFU 0 */
58 
59 
60 #define EM_FPU_TYPE_OFFSET 272
61 
62 /* version of EMULATION software for COPR,0,0 instruction */
63 #define EMULATION_VERSION 4
64 
65 /*
66  * The only was to differeniate between TIMEX and ROLEX (or PCX-S and PCX-T)
67  * is thorough the potential type field from the PDC_MODEL call. The
68  * following flags are used at assist this differeniation.
69  */
70 
71 #define ROLEX_POTENTIAL_KEY_FLAGS PDC_MODEL_CPU_KEY_WORD_TO_IO
72 #define TIMEX_POTENTIAL_KEY_FLAGS (PDC_MODEL_CPU_KEY_QUAD_STORE | \
73  PDC_MODEL_CPU_KEY_RECIP_SQRT)
74 
75 
76 #endif /* ! _MACHINE_FPU_INCLUDED */