tmp105: Correct handling of temperature limit checks
[qemu.git] / linux-user / arm / nwfpe / fpopcode.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 #include "fpsr.h"
26 //#include "fpmodule.h"
27 //#include "fpmodule.inl"
28
29 const floatx80 floatx80Constant[] = {
30 { 0x0000000000000000ULL, 0x0000}, /* extended 0.0 */
31 { 0x8000000000000000ULL, 0x3fff}, /* extended 1.0 */
32 { 0x8000000000000000ULL, 0x4000}, /* extended 2.0 */
33 { 0xc000000000000000ULL, 0x4000}, /* extended 3.0 */
34 { 0x8000000000000000ULL, 0x4001}, /* extended 4.0 */
35 { 0xa000000000000000ULL, 0x4001}, /* extended 5.0 */
36 { 0x8000000000000000ULL, 0x3ffe}, /* extended 0.5 */
37 { 0xa000000000000000ULL, 0x4002} /* extended 10.0 */
38 };
39
40 const float64 float64Constant[] = {
41 const_float64(0x0000000000000000ULL), /* double 0.0 */
42 const_float64(0x3ff0000000000000ULL), /* double 1.0 */
43 const_float64(0x4000000000000000ULL), /* double 2.0 */
44 const_float64(0x4008000000000000ULL), /* double 3.0 */
45 const_float64(0x4010000000000000ULL), /* double 4.0 */
46 const_float64(0x4014000000000000ULL), /* double 5.0 */
47 const_float64(0x3fe0000000000000ULL), /* double 0.5 */
48 const_float64(0x4024000000000000ULL) /* double 10.0 */
49 };
50
51 const float32 float32Constant[] = {
52 const_float32(0x00000000), /* single 0.0 */
53 const_float32(0x3f800000), /* single 1.0 */
54 const_float32(0x40000000), /* single 2.0 */
55 const_float32(0x40400000), /* single 3.0 */
56 const_float32(0x40800000), /* single 4.0 */
57 const_float32(0x40a00000), /* single 5.0 */
58 const_float32(0x3f000000), /* single 0.5 */
59 const_float32(0x41200000) /* single 10.0 */
60 };
61
62 unsigned int getRegisterCount(const unsigned int opcode)
63 {
64 unsigned int nRc;
65
66 switch (opcode & MASK_REGISTER_COUNT)
67 {
68 case 0x00000000: nRc = 4; break;
69 case 0x00008000: nRc = 1; break;
70 case 0x00400000: nRc = 2; break;
71 case 0x00408000: nRc = 3; break;
72 default: nRc = 0;
73 }
74
75 return(nRc);
76 }
77
78 unsigned int getDestinationSize(const unsigned int opcode)
79 {
80 unsigned int nRc;
81
82 switch (opcode & MASK_DESTINATION_SIZE)
83 {
84 case 0x00000000: nRc = typeSingle; break;
85 case 0x00000080: nRc = typeDouble; break;
86 case 0x00080000: nRc = typeExtended; break;
87 default: nRc = typeNone;
88 }
89
90 return(nRc);
91 }