1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
|
/*
* Helpers for integer and multimedia instructions.
*
* Copyright (c) 2007 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "qemu/host-utils.h"
uint64_t helper_zapnot(uint64_t val, uint64_t mskb)
{
uint64_t mask;
mask = -(mskb & 0x01) & 0x00000000000000ffull;
mask |= -(mskb & 0x02) & 0x000000000000ff00ull;
mask |= -(mskb & 0x04) & 0x0000000000ff0000ull;
mask |= -(mskb & 0x08) & 0x00000000ff000000ull;
mask |= -(mskb & 0x10) & 0x000000ff00000000ull;
mask |= -(mskb & 0x20) & 0x0000ff0000000000ull;
mask |= -(mskb & 0x40) & 0x00ff000000000000ull;
mask |= -(mskb & 0x80) & 0xff00000000000000ull;
return val & mask;
}
uint64_t helper_zap(uint64_t val, uint64_t mask)
{
return helper_zapnot(val, ~mask);
}
uint64_t helper_cmpbe0(uint64_t a)
{
uint64_t m = 0x7f7f7f7f7f7f7f7fULL;
uint64_t c = ~(((a & m) + m) | a | m);
/* a.......b.......c.......d.......e.......f.......g.......h....... */
c |= c << 7;
/* ab......bc......cd......de......ef......fg......gh......h....... */
c |= c << 14;
/* abcd....bcde....cdef....defg....efgh....fgh.....gh......h....... */
c |= c << 28;
/* abcdefghbcdefgh.cdefgh..defgh...efgh....fgh.....gh......h....... */
return c >> 56;
}
uint64_t helper_cmpbge(uint64_t a, uint64_t b)
{
uint64_t mask = 0x00ff00ff00ff00ffULL;
uint64_t test = 0x0100010001000100ULL;
uint64_t al, ah, bl, bh, cl, ch;
/* Separate the bytes to avoid false positives. */
al = a & mask;
bl = b & mask;
ah = (a >> 8) & mask;
bh = (b >> 8) & mask;
/* "Compare". If a byte in B is greater than a byte in A,
it will clear the test bit. */
cl = ((al | test) - bl) & test;
ch = ((ah | test) - bh) & test;
/* Fold all of the test bits into a contiguous set. */
/* ch=.......a...............c...............e...............g........ */
/* cl=.......b...............d...............f...............h........ */
cl += ch << 1;
/* cl=......ab..............cd..............ef..............gh........ */
cl |= cl << 14;
/* cl=......abcd............cdef............efgh............gh........ */
cl |= cl << 28;
/* cl=......abcdefgh........cdefgh..........efgh............gh........ */
return cl >> 50;
}
uint64_t helper_minub8(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
uint8_t opa, opb, opr;
int i;
for (i = 0; i < 8; ++i) {
opa = op1 >> (i * 8);
opb = op2 >> (i * 8);
opr = opa < opb ? opa : opb;
res |= (uint64_t)opr << (i * 8);
}
return res;
}
uint64_t helper_minsb8(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
int8_t opa, opb;
uint8_t opr;
int i;
for (i = 0; i < 8; ++i) {
opa = op1 >> (i * 8);
opb = op2 >> (i * 8);
opr = opa < opb ? opa : opb;
res |= (uint64_t)opr << (i * 8);
}
return res;
}
uint64_t helper_minuw4(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
uint16_t opa, opb, opr;
int i;
for (i = 0; i < 4; ++i) {
opa = op1 >> (i * 16);
opb = op2 >> (i * 16);
opr = opa < opb ? opa : opb;
res |= (uint64_t)opr << (i * 16);
}
return res;
}
uint64_t helper_minsw4(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
int16_t opa, opb;
uint16_t opr;
int i;
for (i = 0; i < 4; ++i) {
opa = op1 >> (i * 16);
opb = op2 >> (i * 16);
opr = opa < opb ? opa : opb;
res |= (uint64_t)opr << (i * 16);
}
return res;
}
uint64_t helper_maxub8(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
uint8_t opa, opb, opr;
int i;
for (i = 0; i < 8; ++i) {
opa = op1 >> (i * 8);
opb = op2 >> (i * 8);
opr = opa > opb ? opa : opb;
res |= (uint64_t)opr << (i * 8);
}
return res;
}
uint64_t helper_maxsb8(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
int8_t opa, opb;
uint8_t opr;
int i;
for (i = 0; i < 8; ++i) {
opa = op1 >> (i * 8);
opb = op2 >> (i * 8);
opr = opa > opb ? opa : opb;
res |= (uint64_t)opr << (i * 8);
}
return res;
}
uint64_t helper_maxuw4(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
uint16_t opa, opb, opr;
int i;
for (i = 0; i < 4; ++i) {
opa = op1 >> (i * 16);
opb = op2 >> (i * 16);
opr = opa > opb ? opa : opb;
res |= (uint64_t)opr << (i * 16);
}
return res;
}
uint64_t helper_maxsw4(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
int16_t opa, opb;
uint16_t opr;
int i;
for (i = 0; i < 4; ++i) {
opa = op1 >> (i * 16);
opb = op2 >> (i * 16);
opr = opa > opb ? opa : opb;
res |= (uint64_t)opr << (i * 16);
}
return res;
}
uint64_t helper_perr(uint64_t op1, uint64_t op2)
{
uint64_t res = 0;
uint8_t opa, opb, opr;
int i;
for (i = 0; i < 8; ++i) {
opa = op1 >> (i * 8);
opb = op2 >> (i * 8);
if (opa >= opb) {
opr = opa - opb;
} else {
opr = opb - opa;
}
res += opr;
}
return res;
}
uint64_t helper_pklb(uint64_t op1)
{
return (op1 & 0xff) | ((op1 >> 24) & 0xff00);
}
uint64_t helper_pkwb(uint64_t op1)
{
return ((op1 & 0xff)
| ((op1 >> 8) & 0xff00)
| ((op1 >> 16) & 0xff0000)
| ((op1 >> 24) & 0xff000000));
}
uint64_t helper_unpkbl(uint64_t op1)
{
return (op1 & 0xff) | ((op1 & 0xff00) << 24);
}
uint64_t helper_unpkbw(uint64_t op1)
{
return ((op1 & 0xff)
| ((op1 & 0xff00) << 8)
| ((op1 & 0xff0000) << 16)
| ((op1 & 0xff000000) << 24));
}
void helper_check_overflow(CPUAlphaState *env, uint64_t op1, uint64_t op2)
{
if (unlikely(op1 != op2)) {
arith_excp(env, GETPC(), EXC_M_IOV, 0);
}
}
|
