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Diffstat (limited to 'arch/arm26/nwfpe/fpopcode.c')
-rw-r--r-- | arch/arm26/nwfpe/fpopcode.c | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/arch/arm26/nwfpe/fpopcode.c b/arch/arm26/nwfpe/fpopcode.c deleted file mode 100644 index d81ddd188322..000000000000 --- a/arch/arm26/nwfpe/fpopcode.c +++ /dev/null | |||
@@ -1,148 +0,0 @@ | |||
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 | #include "fpsr.h" | ||
26 | #include "fpmodule.h" | ||
27 | #include "fpmodule.inl" | ||
28 | |||
29 | const floatx80 floatx80Constant[] = { | ||
30 | { 0x0000, 0x0000000000000000ULL}, /* extended 0.0 */ | ||
31 | { 0x3fff, 0x8000000000000000ULL}, /* extended 1.0 */ | ||
32 | { 0x4000, 0x8000000000000000ULL}, /* extended 2.0 */ | ||
33 | { 0x4000, 0xc000000000000000ULL}, /* extended 3.0 */ | ||
34 | { 0x4001, 0x8000000000000000ULL}, /* extended 4.0 */ | ||
35 | { 0x4001, 0xa000000000000000ULL}, /* extended 5.0 */ | ||
36 | { 0x3ffe, 0x8000000000000000ULL}, /* extended 0.5 */ | ||
37 | { 0x4002, 0xa000000000000000ULL} /* extended 10.0 */ | ||
38 | }; | ||
39 | |||
40 | const float64 float64Constant[] = { | ||
41 | 0x0000000000000000ULL, /* double 0.0 */ | ||
42 | 0x3ff0000000000000ULL, /* double 1.0 */ | ||
43 | 0x4000000000000000ULL, /* double 2.0 */ | ||
44 | 0x4008000000000000ULL, /* double 3.0 */ | ||
45 | 0x4010000000000000ULL, /* double 4.0 */ | ||
46 | 0x4014000000000000ULL, /* double 5.0 */ | ||
47 | 0x3fe0000000000000ULL, /* double 0.5 */ | ||
48 | 0x4024000000000000ULL /* double 10.0 */ | ||
49 | }; | ||
50 | |||
51 | const float32 float32Constant[] = { | ||
52 | 0x00000000, /* single 0.0 */ | ||
53 | 0x3f800000, /* single 1.0 */ | ||
54 | 0x40000000, /* single 2.0 */ | ||
55 | 0x40400000, /* single 3.0 */ | ||
56 | 0x40800000, /* single 4.0 */ | ||
57 | 0x40a00000, /* single 5.0 */ | ||
58 | 0x3f000000, /* single 0.5 */ | ||
59 | 0x41200000 /* single 10.0 */ | ||
60 | }; | ||
61 | |||
62 | unsigned int getTransferLength(const unsigned int opcode) | ||
63 | { | ||
64 | unsigned int nRc; | ||
65 | |||
66 | switch (opcode & MASK_TRANSFER_LENGTH) | ||
67 | { | ||
68 | case 0x00000000: nRc = 1; break; /* single precision */ | ||
69 | case 0x00008000: nRc = 2; break; /* double precision */ | ||
70 | case 0x00400000: nRc = 3; break; /* extended precision */ | ||
71 | default: nRc = 0; | ||
72 | } | ||
73 | |||
74 | return(nRc); | ||
75 | } | ||
76 | |||
77 | unsigned int getRegisterCount(const unsigned int opcode) | ||
78 | { | ||
79 | unsigned int nRc; | ||
80 | |||
81 | switch (opcode & MASK_REGISTER_COUNT) | ||
82 | { | ||
83 | case 0x00000000: nRc = 4; break; | ||
84 | case 0x00008000: nRc = 1; break; | ||
85 | case 0x00400000: nRc = 2; break; | ||
86 | case 0x00408000: nRc = 3; break; | ||
87 | default: nRc = 0; | ||
88 | } | ||
89 | |||
90 | return(nRc); | ||
91 | } | ||
92 | |||
93 | unsigned int getRoundingPrecision(const unsigned int opcode) | ||
94 | { | ||
95 | unsigned int nRc; | ||
96 | |||
97 | switch (opcode & MASK_ROUNDING_PRECISION) | ||
98 | { | ||
99 | case 0x00000000: nRc = 1; break; | ||
100 | case 0x00000080: nRc = 2; break; | ||
101 | case 0x00080000: nRc = 3; break; | ||
102 | default: nRc = 0; | ||
103 | } | ||
104 | |||
105 | return(nRc); | ||
106 | } | ||
107 | |||
108 | unsigned int getDestinationSize(const unsigned int opcode) | ||
109 | { | ||
110 | unsigned int nRc; | ||
111 | |||
112 | switch (opcode & MASK_DESTINATION_SIZE) | ||
113 | { | ||
114 | case 0x00000000: nRc = typeSingle; break; | ||
115 | case 0x00000080: nRc = typeDouble; break; | ||
116 | case 0x00080000: nRc = typeExtended; break; | ||
117 | default: nRc = typeNone; | ||
118 | } | ||
119 | |||
120 | return(nRc); | ||
121 | } | ||
122 | |||
123 | /* condition code lookup table | ||
124 | index into the table is test code: EQ, NE, ... LT, GT, AL, NV | ||
125 | bit position in short is condition code: NZCV */ | ||
126 | static const unsigned short aCC[16] = { | ||
127 | 0xF0F0, // EQ == Z set | ||
128 | 0x0F0F, // NE | ||
129 | 0xCCCC, // CS == C set | ||
130 | 0x3333, // CC | ||
131 | 0xFF00, // MI == N set | ||
132 | 0x00FF, // PL | ||
133 | 0xAAAA, // VS == V set | ||
134 | 0x5555, // VC | ||
135 | 0x0C0C, // HI == C set && Z clear | ||
136 | 0xF3F3, // LS == C clear || Z set | ||
137 | 0xAA55, // GE == (N==V) | ||
138 | 0x55AA, // LT == (N!=V) | ||
139 | 0x0A05, // GT == (!Z && (N==V)) | ||
140 | 0xF5FA, // LE == (Z || (N!=V)) | ||
141 | 0xFFFF, // AL always | ||
142 | 0 // NV | ||
143 | }; | ||
144 | |||
145 | unsigned int checkCondition(const unsigned int opcode, const unsigned int ccodes) | ||
146 | { | ||
147 | return (aCC[opcode>>28] >> (ccodes>>28)) & 1; | ||
148 | } | ||