| 1 |
dpavlin |
12 |
/* |
| 2 |
|
|
* Copyright (C) 2005 Anders Gavare. All rights reserved. |
| 3 |
|
|
* |
| 4 |
|
|
* Redistribution and use in source and binary forms, with or without |
| 5 |
|
|
* modification, are permitted provided that the following conditions are met: |
| 6 |
|
|
* |
| 7 |
|
|
* 1. Redistributions of source code must retain the above copyright |
| 8 |
|
|
* notice, this list of conditions and the following disclaimer. |
| 9 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright |
| 10 |
|
|
* notice, this list of conditions and the following disclaimer in the |
| 11 |
|
|
* documentation and/or other materials provided with the distribution. |
| 12 |
|
|
* 3. The name of the author may not be used to endorse or promote products |
| 13 |
|
|
* derived from this software without specific prior written permission. |
| 14 |
|
|
* |
| 15 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 |
|
|
* SUCH DAMAGE. |
| 26 |
|
|
* |
| 27 |
|
|
* |
| 28 |
|
|
* $Id: cpu_alpha_instr_alu.c,v 1.12 2005/08/07 08:57:54 debug Exp $ |
| 29 |
|
|
* |
| 30 |
|
|
* Alpha ALU instructions. (Included from tmp_alpha_misc.c.) |
| 31 |
|
|
* |
| 32 |
|
|
* |
| 33 |
|
|
* Most ALU instructions have the following arguments: |
| 34 |
|
|
* |
| 35 |
|
|
* arg[0] = pointer to destination uint64_t |
| 36 |
|
|
* arg[1] = pointer to source uint64_t nr 1 |
| 37 |
|
|
* arg[2] = pointer to source uint64_t nr 2 |
| 38 |
|
|
* |
| 39 |
|
|
* or, if ALU_IMM is set, arg[2] contains an 8-bit immediate value. |
| 40 |
|
|
* |
| 41 |
|
|
* The main function groups are: |
| 42 |
|
|
* |
| 43 |
|
|
* ALU_INS inserts |
| 44 |
|
|
* ALU_EXT extracts |
| 45 |
|
|
* ALU_MSK masks |
| 46 |
|
|
* ALU_CMOV conditional moves |
| 47 |
|
|
* ALU_CMP compares |
| 48 |
|
|
* none of the above everything else (add, sub, ...) |
| 49 |
|
|
*/ |
| 50 |
|
|
|
| 51 |
|
|
void ALU_N(struct cpu *cpu, struct alpha_instr_call *ic) |
| 52 |
|
|
{ |
| 53 |
|
|
#ifdef ALU_INS |
| 54 |
|
|
|
| 55 |
|
|
uint64_t x = *((uint64_t *)ic->arg[1]); |
| 56 |
|
|
int r = ( |
| 57 |
|
|
#ifdef ALU_IMM |
| 58 |
|
|
ic->arg[2] |
| 59 |
|
|
#else |
| 60 |
|
|
(*((uint64_t *)ic->arg[2])) |
| 61 |
|
|
#endif |
| 62 |
|
|
& 7) * 8; |
| 63 |
|
|
|
| 64 |
|
|
#ifdef ALU_B |
| 65 |
|
|
x &= 0xff; |
| 66 |
|
|
#endif |
| 67 |
|
|
#ifdef ALU_W |
| 68 |
|
|
x &= 0xffff; |
| 69 |
|
|
#endif |
| 70 |
|
|
#ifdef ALU_L |
| 71 |
|
|
x &= 0xffffffffULL; |
| 72 |
|
|
#endif |
| 73 |
|
|
|
| 74 |
|
|
#ifdef ALU_LO |
| 75 |
|
|
x <<= r; |
| 76 |
|
|
#else |
| 77 |
|
|
r = 64 - r; |
| 78 |
|
|
if (r == 64) |
| 79 |
|
|
x = 0; |
| 80 |
|
|
else |
| 81 |
|
|
x >>= r; |
| 82 |
|
|
#endif |
| 83 |
|
|
*((uint64_t *)ic->arg[0]) = x; |
| 84 |
|
|
|
| 85 |
|
|
#else /* ! INS */ |
| 86 |
|
|
|
| 87 |
|
|
#ifdef ALU_EXT |
| 88 |
|
|
|
| 89 |
|
|
uint64_t x = *((uint64_t *)ic->arg[1]); |
| 90 |
|
|
int r = ( |
| 91 |
|
|
#ifdef ALU_IMM |
| 92 |
|
|
ic->arg[2] |
| 93 |
|
|
#else |
| 94 |
|
|
(*((uint64_t *)ic->arg[2])) |
| 95 |
|
|
#endif |
| 96 |
|
|
& 7) * 8; |
| 97 |
|
|
#ifdef ALU_LO |
| 98 |
|
|
x >>= r; |
| 99 |
|
|
#else |
| 100 |
|
|
r = 64 - r; |
| 101 |
|
|
if (r != 64) |
| 102 |
|
|
x <<= r; |
| 103 |
|
|
#endif |
| 104 |
|
|
#ifdef ALU_B |
| 105 |
|
|
x &= 0xff; |
| 106 |
|
|
#endif |
| 107 |
|
|
#ifdef ALU_W |
| 108 |
|
|
x &= 0xffff; |
| 109 |
|
|
#endif |
| 110 |
|
|
#ifdef ALU_L |
| 111 |
|
|
x &= 0xffffffffULL; |
| 112 |
|
|
#endif |
| 113 |
|
|
*((uint64_t *)ic->arg[0]) = x; |
| 114 |
|
|
|
| 115 |
|
|
#else /* ! EXT */ |
| 116 |
|
|
|
| 117 |
|
|
#ifdef ALU_MSK |
| 118 |
|
|
|
| 119 |
|
|
uint64_t x = *((uint64_t *)ic->arg[1]); |
| 120 |
|
|
#ifdef ALU_B |
| 121 |
|
|
uint64_t mask = 0x00000000000000ffULL; |
| 122 |
|
|
#endif |
| 123 |
|
|
#ifdef ALU_W |
| 124 |
|
|
uint64_t mask = 0x000000000000ffffULL; |
| 125 |
|
|
#endif |
| 126 |
|
|
#ifdef ALU_L |
| 127 |
|
|
uint64_t mask = 0x00000000ffffffffULL; |
| 128 |
|
|
#endif |
| 129 |
|
|
#ifdef ALU_Q |
| 130 |
|
|
uint64_t mask = 0xffffffffffffffffULL; |
| 131 |
|
|
#endif |
| 132 |
|
|
int r = ( |
| 133 |
|
|
#ifdef ALU_IMM |
| 134 |
|
|
ic->arg[2] |
| 135 |
|
|
#else |
| 136 |
|
|
(*((uint64_t *)ic->arg[2])) |
| 137 |
|
|
#endif |
| 138 |
|
|
& 7) * 8; |
| 139 |
|
|
|
| 140 |
|
|
#ifdef ALU_LO |
| 141 |
|
|
mask <<= r; |
| 142 |
|
|
#else |
| 143 |
|
|
if (r == 0) |
| 144 |
|
|
mask = 0; |
| 145 |
|
|
else |
| 146 |
|
|
mask >>= (64 - r); |
| 147 |
|
|
#endif |
| 148 |
|
|
|
| 149 |
|
|
*((uint64_t *)ic->arg[0]) = x & ~mask; |
| 150 |
|
|
|
| 151 |
|
|
#else /* !MSK */ |
| 152 |
|
|
|
| 153 |
|
|
#ifdef ALU_CMOV |
| 154 |
|
|
|
| 155 |
|
|
if ( |
| 156 |
|
|
#ifdef ALU_CMOV_lbc |
| 157 |
|
|
!( |
| 158 |
|
|
#endif |
| 159 |
|
|
(*((int64_t *)ic->arg[1])) |
| 160 |
|
|
#ifdef ALU_CMOV_eq |
| 161 |
|
|
== 0 |
| 162 |
|
|
#endif |
| 163 |
|
|
#ifdef ALU_CMOV_ne |
| 164 |
|
|
!= 0 |
| 165 |
|
|
#endif |
| 166 |
|
|
#ifdef ALU_CMOV_le |
| 167 |
|
|
<= 0 |
| 168 |
|
|
#endif |
| 169 |
|
|
#ifdef ALU_CMOV_lt |
| 170 |
|
|
< 0 |
| 171 |
|
|
#endif |
| 172 |
|
|
#ifdef ALU_CMOV_ge |
| 173 |
|
|
>= 0 |
| 174 |
|
|
#endif |
| 175 |
|
|
#ifdef ALU_CMOV_gt |
| 176 |
|
|
> 0 |
| 177 |
|
|
#endif |
| 178 |
|
|
#ifdef ALU_CMOV_lbs |
| 179 |
|
|
& 1 |
| 180 |
|
|
#endif |
| 181 |
|
|
#ifdef ALU_CMOV_lbc |
| 182 |
|
|
& 1) |
| 183 |
|
|
#endif |
| 184 |
|
|
) |
| 185 |
|
|
*((uint64_t *)ic->arg[0]) = |
| 186 |
|
|
#ifdef ALU_IMM |
| 187 |
|
|
(uint64_t)ic->arg[2] |
| 188 |
|
|
#else |
| 189 |
|
|
(*((uint64_t *)ic->arg[2])) |
| 190 |
|
|
#endif |
| 191 |
|
|
; |
| 192 |
|
|
|
| 193 |
|
|
#else /* ! CMOV */ |
| 194 |
|
|
|
| 195 |
|
|
#ifdef ALU_CMP |
| 196 |
|
|
|
| 197 |
|
|
uint64_t x; |
| 198 |
|
|
|
| 199 |
|
|
x = (*(( |
| 200 |
|
|
#ifdef ALU_UNSIGNED |
| 201 |
|
|
uint64_t |
| 202 |
|
|
#else |
| 203 |
|
|
int64_t |
| 204 |
|
|
#endif |
| 205 |
|
|
*)ic->arg[1])) |
| 206 |
|
|
|
| 207 |
|
|
#ifdef ALU_CMP_EQ |
| 208 |
|
|
== |
| 209 |
|
|
#endif |
| 210 |
|
|
#ifdef ALU_CMP_LE |
| 211 |
|
|
<= |
| 212 |
|
|
#endif |
| 213 |
|
|
#ifdef ALU_CMP_LT |
| 214 |
|
|
< |
| 215 |
|
|
#endif |
| 216 |
|
|
|
| 217 |
|
|
#ifdef ALU_IMM |
| 218 |
|
|
#ifdef ALU_UNSIGNED |
| 219 |
|
|
(uint64_t)ic->arg[2] |
| 220 |
|
|
#else |
| 221 |
|
|
(int64_t)ic->arg[2] |
| 222 |
|
|
#endif |
| 223 |
|
|
#else |
| 224 |
|
|
#ifdef ALU_UNSIGNED |
| 225 |
|
|
(*((uint64_t *)ic->arg[2])) |
| 226 |
|
|
#else |
| 227 |
|
|
(*((int64_t *)ic->arg[2])) |
| 228 |
|
|
#endif |
| 229 |
|
|
#endif |
| 230 |
|
|
; |
| 231 |
|
|
|
| 232 |
|
|
#else /* !ALU_CMP */ |
| 233 |
|
|
|
| 234 |
|
|
#ifdef ALU_LONG |
| 235 |
|
|
/* Long */ |
| 236 |
|
|
int32_t x; |
| 237 |
|
|
#else |
| 238 |
|
|
/* Quad */ |
| 239 |
|
|
int64_t x; |
| 240 |
|
|
#endif |
| 241 |
|
|
|
| 242 |
|
|
#ifdef ALU_ZAP |
| 243 |
|
|
/* Prepare for zapping: */ |
| 244 |
|
|
uint64_t zapmask = 0xffffffffffffffffULL; |
| 245 |
|
|
int zapbytes = |
| 246 |
|
|
#ifdef ALU_NOT |
| 247 |
|
|
~ |
| 248 |
|
|
#endif |
| 249 |
|
|
#ifdef ALU_IMM |
| 250 |
|
|
(int64_t)ic->arg[2] |
| 251 |
|
|
#else |
| 252 |
|
|
(*((uint64_t *)ic->arg[2])) |
| 253 |
|
|
#endif |
| 254 |
|
|
; |
| 255 |
|
|
if (zapbytes & 0x80) |
| 256 |
|
|
zapmask &= ~0xff00000000000000ULL; |
| 257 |
|
|
if (zapbytes & 0x40) |
| 258 |
|
|
zapmask &= ~0xff000000000000ULL; |
| 259 |
|
|
if (zapbytes & 0x20) |
| 260 |
|
|
zapmask &= ~0xff0000000000ULL; |
| 261 |
|
|
if (zapbytes & 0x10) |
| 262 |
|
|
zapmask &= ~0xff00000000ULL; |
| 263 |
|
|
if (zapbytes & 0x08) |
| 264 |
|
|
zapmask &= ~0xff000000ULL; |
| 265 |
|
|
if (zapbytes & 0x04) |
| 266 |
|
|
zapmask &= ~0xff0000ULL; |
| 267 |
|
|
if (zapbytes & 0x02) |
| 268 |
|
|
zapmask &= ~0xff00ULL; |
| 269 |
|
|
if (zapbytes & 0x01) |
| 270 |
|
|
zapmask &= ~0xffULL; |
| 271 |
|
|
#endif /* ZAP */ |
| 272 |
|
|
|
| 273 |
|
|
x = ( |
| 274 |
|
|
#ifdef ALU_SRA |
| 275 |
|
|
(int64_t) |
| 276 |
|
|
#endif |
| 277 |
|
|
(*((uint64_t *)ic->arg[1])) |
| 278 |
|
|
#ifdef ALU_S4 |
| 279 |
|
|
* 4 |
| 280 |
|
|
#endif |
| 281 |
|
|
#ifdef ALU_S8 |
| 282 |
|
|
* 8 |
| 283 |
|
|
#endif |
| 284 |
|
|
) |
| 285 |
|
|
#ifdef ALU_ADD |
| 286 |
|
|
+ |
| 287 |
|
|
#endif |
| 288 |
|
|
#ifdef ALU_SUB |
| 289 |
|
|
- |
| 290 |
|
|
#endif |
| 291 |
|
|
#ifdef ALU_OR |
| 292 |
|
|
| |
| 293 |
|
|
#endif |
| 294 |
|
|
#ifdef ALU_XOR |
| 295 |
|
|
^ |
| 296 |
|
|
#endif |
| 297 |
|
|
#ifdef ALU_AND |
| 298 |
|
|
& |
| 299 |
|
|
#endif |
| 300 |
|
|
#ifdef ALU_SLL |
| 301 |
|
|
<< |
| 302 |
|
|
#endif |
| 303 |
|
|
#if defined(ALU_SRA) || defined(ALU_SRL) |
| 304 |
|
|
>> |
| 305 |
|
|
#endif |
| 306 |
|
|
|
| 307 |
|
|
#ifdef ALU_ZAP |
| 308 |
|
|
& zapmask |
| 309 |
|
|
#else /* !ZAP */ |
| 310 |
|
|
( |
| 311 |
|
|
#ifdef ALU_NOT |
| 312 |
|
|
~ |
| 313 |
|
|
#endif |
| 314 |
|
|
( |
| 315 |
|
|
#ifdef ALU_IMM |
| 316 |
|
|
(int64_t)ic->arg[2] |
| 317 |
|
|
#else |
| 318 |
|
|
(*((uint64_t *)ic->arg[2])) |
| 319 |
|
|
#endif |
| 320 |
|
|
#if defined(ALU_SRA) || defined(ALU_SRL) || defined(ALU_SLL) |
| 321 |
|
|
& 63 |
| 322 |
|
|
#endif |
| 323 |
|
|
) |
| 324 |
|
|
) |
| 325 |
|
|
#endif /* !ZAP */ |
| 326 |
|
|
|
| 327 |
|
|
; |
| 328 |
|
|
|
| 329 |
|
|
#endif /* !ALU_CMP */ |
| 330 |
|
|
|
| 331 |
|
|
*((uint64_t *)ic->arg[0]) = x; |
| 332 |
|
|
#endif /* ! CMOV */ |
| 333 |
|
|
#endif /* ! MSK */ |
| 334 |
|
|
#endif /* ! EXT */ |
| 335 |
|
|
#endif /* ! INS */ |
| 336 |
|
|
} |
| 337 |
|
|
|
Parent Directory
| 
Revision Log