| 1 | /* |
| 2 | * x86 CPU test |
| 3 | * |
| 4 | * Copyright (c) 2003 Fabrice Bellard |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | #define _GNU_SOURCE |
| 20 | #include <stdlib.h> |
| 21 | #include <stdio.h> |
| 22 | #include <string.h> |
| 23 | #include <inttypes.h> |
| 24 | #include <math.h> |
| 25 | #include <signal.h> |
| 26 | #include <setjmp.h> |
| 27 | #include <errno.h> |
| 28 | #include <sys/ucontext.h> |
| 29 | #include <sys/mman.h> |
| 30 | |
| 31 | #if !defined(__x86_64__) |
| 32 | //#define TEST_VM86 |
| 33 | #define TEST_SEGS |
| 34 | #endif |
| 35 | //#define LINUX_VM86_IOPL_FIX |
| 36 | //#define TEST_P4_FLAGS |
| 37 | #define TEST_CMOV 1 |
| 38 | #define TEST_FCOMI 1 |
| 39 | |
| 40 | #if defined(__x86_64__) |
| 41 | #define FMT64X "%016lx" |
| 42 | #define FMTLX "%016lx" |
| 43 | #define X86_64_ONLY(x) x |
| 44 | #else |
| 45 | #define FMT64X "%016" PRIx64 |
| 46 | #define FMTLX "%08lx" |
| 47 | #define X86_64_ONLY(x) |
| 48 | #endif |
| 49 | |
| 50 | #ifdef TEST_VM86 |
| 51 | #include <asm/vm86.h> |
| 52 | #endif |
| 53 | |
| 54 | #define xglue(x, y) x ## y |
| 55 | #define glue(x, y) xglue(x, y) |
| 56 | #define stringify(s) tostring(s) |
| 57 | #define tostring(s) #s |
| 58 | |
| 59 | #define CC_C 0x0001 |
| 60 | #define CC_P 0x0004 |
| 61 | #define CC_A 0x0010 |
| 62 | #define CC_Z 0x0040 |
| 63 | #define CC_S 0x0080 |
| 64 | #define CC_O 0x0800 |
| 65 | |
| 66 | #define __init_call __attribute__ ((unused,__section__ ("initcall"))) |
| 67 | |
| 68 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A) |
| 69 | |
| 70 | #if defined(__x86_64__) |
| 71 | static inline long i2l(long v) |
| 72 | { |
| 73 | return v | ((v ^ 0xabcd) << 32); |
| 74 | } |
| 75 | #else |
| 76 | static inline long i2l(long v) |
| 77 | { |
| 78 | return v; |
| 79 | } |
| 80 | #endif |
| 81 | |
| 82 | #define OP add |
| 83 | #include "test-i386.h" |
| 84 | |
| 85 | #define OP sub |
| 86 | #include "test-i386.h" |
| 87 | |
| 88 | #define OP xor |
| 89 | #include "test-i386.h" |
| 90 | |
| 91 | #define OP and |
| 92 | #include "test-i386.h" |
| 93 | |
| 94 | #define OP or |
| 95 | #include "test-i386.h" |
| 96 | |
| 97 | #define OP cmp |
| 98 | #include "test-i386.h" |
| 99 | |
| 100 | #define OP adc |
| 101 | #define OP_CC |
| 102 | #include "test-i386.h" |
| 103 | |
| 104 | #define OP sbb |
| 105 | #define OP_CC |
| 106 | #include "test-i386.h" |
| 107 | |
| 108 | #define OP inc |
| 109 | #define OP_CC |
| 110 | #define OP1 |
| 111 | #include "test-i386.h" |
| 112 | |
| 113 | #define OP dec |
| 114 | #define OP_CC |
| 115 | #define OP1 |
| 116 | #include "test-i386.h" |
| 117 | |
| 118 | #define OP neg |
| 119 | #define OP_CC |
| 120 | #define OP1 |
| 121 | #include "test-i386.h" |
| 122 | |
| 123 | #define OP not |
| 124 | #define OP_CC |
| 125 | #define OP1 |
| 126 | #include "test-i386.h" |
| 127 | |
| 128 | #undef CC_MASK |
| 129 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O) |
| 130 | |
| 131 | #define OP shl |
| 132 | #include "test-i386-shift.h" |
| 133 | |
| 134 | #define OP shr |
| 135 | #include "test-i386-shift.h" |
| 136 | |
| 137 | #define OP sar |
| 138 | #include "test-i386-shift.h" |
| 139 | |
| 140 | #define OP rol |
| 141 | #include "test-i386-shift.h" |
| 142 | |
| 143 | #define OP ror |
| 144 | #include "test-i386-shift.h" |
| 145 | |
| 146 | #define OP rcr |
| 147 | #define OP_CC |
| 148 | #include "test-i386-shift.h" |
| 149 | |
| 150 | #define OP rcl |
| 151 | #define OP_CC |
| 152 | #include "test-i386-shift.h" |
| 153 | |
| 154 | #define OP shld |
| 155 | #define OP_SHIFTD |
| 156 | #define OP_NOBYTE |
| 157 | #include "test-i386-shift.h" |
| 158 | |
| 159 | #define OP shrd |
| 160 | #define OP_SHIFTD |
| 161 | #define OP_NOBYTE |
| 162 | #include "test-i386-shift.h" |
| 163 | |
| 164 | /* XXX: should be more precise ? */ |
| 165 | #undef CC_MASK |
| 166 | #define CC_MASK (CC_C) |
| 167 | |
| 168 | #define OP bt |
| 169 | #define OP_NOBYTE |
| 170 | #include "test-i386-shift.h" |
| 171 | |
| 172 | #define OP bts |
| 173 | #define OP_NOBYTE |
| 174 | #include "test-i386-shift.h" |
| 175 | |
| 176 | #define OP btr |
| 177 | #define OP_NOBYTE |
| 178 | #include "test-i386-shift.h" |
| 179 | |
| 180 | #define OP btc |
| 181 | #define OP_NOBYTE |
| 182 | #include "test-i386-shift.h" |
| 183 | |
| 184 | /* lea test (modrm support) */ |
| 185 | #define TEST_LEAQ(STR)\ |
| 186 | {\ |
| 187 | asm("lea " STR ", %0"\ |
| 188 | : "=r" (res)\ |
| 189 | : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\ |
| 190 | printf("lea %s = " FMTLX "\n", STR, res);\ |
| 191 | } |
| 192 | |
| 193 | #define TEST_LEA(STR)\ |
| 194 | {\ |
| 195 | asm("lea " STR ", %0"\ |
| 196 | : "=r" (res)\ |
| 197 | : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\ |
| 198 | printf("lea %s = " FMTLX "\n", STR, res);\ |
| 199 | } |
| 200 | |
| 201 | #define TEST_LEA16(STR)\ |
| 202 | {\ |
| 203 | asm(".code16 ; .byte 0x67 ; leal " STR ", %0 ; .code32"\ |
| 204 | : "=r" (res)\ |
| 205 | : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\ |
| 206 | printf("lea %s = %08lx\n", STR, res);\ |
| 207 | } |
| 208 | |
| 209 | |
| 210 | void test_lea(void) |
| 211 | { |
| 212 | long eax, ebx, ecx, edx, esi, edi, res; |
| 213 | eax = i2l(0x0001); |
| 214 | ebx = i2l(0x0002); |
| 215 | ecx = i2l(0x0004); |
| 216 | edx = i2l(0x0008); |
| 217 | esi = i2l(0x0010); |
| 218 | edi = i2l(0x0020); |
| 219 | |
| 220 | TEST_LEA("0x4000"); |
| 221 | |
| 222 | TEST_LEA("(%%eax)"); |
| 223 | TEST_LEA("(%%ebx)"); |
| 224 | TEST_LEA("(%%ecx)"); |
| 225 | TEST_LEA("(%%edx)"); |
| 226 | TEST_LEA("(%%esi)"); |
| 227 | TEST_LEA("(%%edi)"); |
| 228 | |
| 229 | TEST_LEA("0x40(%%eax)"); |
| 230 | TEST_LEA("0x40(%%ebx)"); |
| 231 | TEST_LEA("0x40(%%ecx)"); |
| 232 | TEST_LEA("0x40(%%edx)"); |
| 233 | TEST_LEA("0x40(%%esi)"); |
| 234 | TEST_LEA("0x40(%%edi)"); |
| 235 | |
| 236 | TEST_LEA("0x4000(%%eax)"); |
| 237 | TEST_LEA("0x4000(%%ebx)"); |
| 238 | TEST_LEA("0x4000(%%ecx)"); |
| 239 | TEST_LEA("0x4000(%%edx)"); |
| 240 | TEST_LEA("0x4000(%%esi)"); |
| 241 | TEST_LEA("0x4000(%%edi)"); |
| 242 | |
| 243 | TEST_LEA("(%%eax, %%ecx)"); |
| 244 | TEST_LEA("(%%ebx, %%edx)"); |
| 245 | TEST_LEA("(%%ecx, %%ecx)"); |
| 246 | TEST_LEA("(%%edx, %%ecx)"); |
| 247 | TEST_LEA("(%%esi, %%ecx)"); |
| 248 | TEST_LEA("(%%edi, %%ecx)"); |
| 249 | |
| 250 | TEST_LEA("0x40(%%eax, %%ecx)"); |
| 251 | TEST_LEA("0x4000(%%ebx, %%edx)"); |
| 252 | |
| 253 | TEST_LEA("(%%ecx, %%ecx, 2)"); |
| 254 | TEST_LEA("(%%edx, %%ecx, 4)"); |
| 255 | TEST_LEA("(%%esi, %%ecx, 8)"); |
| 256 | |
| 257 | TEST_LEA("(,%%eax, 2)"); |
| 258 | TEST_LEA("(,%%ebx, 4)"); |
| 259 | TEST_LEA("(,%%ecx, 8)"); |
| 260 | |
| 261 | TEST_LEA("0x40(,%%eax, 2)"); |
| 262 | TEST_LEA("0x40(,%%ebx, 4)"); |
| 263 | TEST_LEA("0x40(,%%ecx, 8)"); |
| 264 | |
| 265 | |
| 266 | TEST_LEA("-10(%%ecx, %%ecx, 2)"); |
| 267 | TEST_LEA("-10(%%edx, %%ecx, 4)"); |
| 268 | TEST_LEA("-10(%%esi, %%ecx, 8)"); |
| 269 | |
| 270 | TEST_LEA("0x4000(%%ecx, %%ecx, 2)"); |
| 271 | TEST_LEA("0x4000(%%edx, %%ecx, 4)"); |
| 272 | TEST_LEA("0x4000(%%esi, %%ecx, 8)"); |
| 273 | |
| 274 | #if defined(__x86_64__) |
| 275 | TEST_LEAQ("0x4000"); |
| 276 | TEST_LEAQ("0x4000(%%rip)"); |
| 277 | |
| 278 | TEST_LEAQ("(%%rax)"); |
| 279 | TEST_LEAQ("(%%rbx)"); |
| 280 | TEST_LEAQ("(%%rcx)"); |
| 281 | TEST_LEAQ("(%%rdx)"); |
| 282 | TEST_LEAQ("(%%rsi)"); |
| 283 | TEST_LEAQ("(%%rdi)"); |
| 284 | |
| 285 | TEST_LEAQ("0x40(%%rax)"); |
| 286 | TEST_LEAQ("0x40(%%rbx)"); |
| 287 | TEST_LEAQ("0x40(%%rcx)"); |
| 288 | TEST_LEAQ("0x40(%%rdx)"); |
| 289 | TEST_LEAQ("0x40(%%rsi)"); |
| 290 | TEST_LEAQ("0x40(%%rdi)"); |
| 291 | |
| 292 | TEST_LEAQ("0x4000(%%rax)"); |
| 293 | TEST_LEAQ("0x4000(%%rbx)"); |
| 294 | TEST_LEAQ("0x4000(%%rcx)"); |
| 295 | TEST_LEAQ("0x4000(%%rdx)"); |
| 296 | TEST_LEAQ("0x4000(%%rsi)"); |
| 297 | TEST_LEAQ("0x4000(%%rdi)"); |
| 298 | |
| 299 | TEST_LEAQ("(%%rax, %%rcx)"); |
| 300 | TEST_LEAQ("(%%rbx, %%rdx)"); |
| 301 | TEST_LEAQ("(%%rcx, %%rcx)"); |
| 302 | TEST_LEAQ("(%%rdx, %%rcx)"); |
| 303 | TEST_LEAQ("(%%rsi, %%rcx)"); |
| 304 | TEST_LEAQ("(%%rdi, %%rcx)"); |
| 305 | |
| 306 | TEST_LEAQ("0x40(%%rax, %%rcx)"); |
| 307 | TEST_LEAQ("0x4000(%%rbx, %%rdx)"); |
| 308 | |
| 309 | TEST_LEAQ("(%%rcx, %%rcx, 2)"); |
| 310 | TEST_LEAQ("(%%rdx, %%rcx, 4)"); |
| 311 | TEST_LEAQ("(%%rsi, %%rcx, 8)"); |
| 312 | |
| 313 | TEST_LEAQ("(,%%rax, 2)"); |
| 314 | TEST_LEAQ("(,%%rbx, 4)"); |
| 315 | TEST_LEAQ("(,%%rcx, 8)"); |
| 316 | |
| 317 | TEST_LEAQ("0x40(,%%rax, 2)"); |
| 318 | TEST_LEAQ("0x40(,%%rbx, 4)"); |
| 319 | TEST_LEAQ("0x40(,%%rcx, 8)"); |
| 320 | |
| 321 | |
| 322 | TEST_LEAQ("-10(%%rcx, %%rcx, 2)"); |
| 323 | TEST_LEAQ("-10(%%rdx, %%rcx, 4)"); |
| 324 | TEST_LEAQ("-10(%%rsi, %%rcx, 8)"); |
| 325 | |
| 326 | TEST_LEAQ("0x4000(%%rcx, %%rcx, 2)"); |
| 327 | TEST_LEAQ("0x4000(%%rdx, %%rcx, 4)"); |
| 328 | TEST_LEAQ("0x4000(%%rsi, %%rcx, 8)"); |
| 329 | #else |
| 330 | /* limited 16 bit addressing test */ |
| 331 | TEST_LEA16("0x4000"); |
| 332 | TEST_LEA16("(%%bx)"); |
| 333 | TEST_LEA16("(%%si)"); |
| 334 | TEST_LEA16("(%%di)"); |
| 335 | TEST_LEA16("0x40(%%bx)"); |
| 336 | TEST_LEA16("0x40(%%si)"); |
| 337 | TEST_LEA16("0x40(%%di)"); |
| 338 | TEST_LEA16("0x4000(%%bx)"); |
| 339 | TEST_LEA16("0x4000(%%si)"); |
| 340 | TEST_LEA16("(%%bx,%%si)"); |
| 341 | TEST_LEA16("(%%bx,%%di)"); |
| 342 | TEST_LEA16("0x40(%%bx,%%si)"); |
| 343 | TEST_LEA16("0x40(%%bx,%%di)"); |
| 344 | TEST_LEA16("0x4000(%%bx,%%si)"); |
| 345 | TEST_LEA16("0x4000(%%bx,%%di)"); |
| 346 | #endif |
| 347 | } |
| 348 | |
| 349 | #define TEST_JCC(JCC, v1, v2)\ |
| 350 | {\ |
| 351 | int res;\ |
| 352 | asm("movl $1, %0\n\t"\ |
| 353 | "cmpl %2, %1\n\t"\ |
| 354 | "j" JCC " 1f\n\t"\ |
| 355 | "movl $0, %0\n\t"\ |
| 356 | "1:\n\t"\ |
| 357 | : "=r" (res)\ |
| 358 | : "r" (v1), "r" (v2));\ |
| 359 | printf("%-10s %d\n", "j" JCC, res);\ |
| 360 | \ |
| 361 | asm("movl $0, %0\n\t"\ |
| 362 | "cmpl %2, %1\n\t"\ |
| 363 | "set" JCC " %b0\n\t"\ |
| 364 | : "=r" (res)\ |
| 365 | : "r" (v1), "r" (v2));\ |
| 366 | printf("%-10s %d\n", "set" JCC, res);\ |
| 367 | if (TEST_CMOV) {\ |
| 368 | long val = i2l(1);\ |
| 369 | long res = i2l(0x12345678);\ |
| 370 | X86_64_ONLY(\ |
| 371 | asm("cmpl %2, %1\n\t"\ |
| 372 | "cmov" JCC "q %3, %0\n\t"\ |
| 373 | : "=r" (res)\ |
| 374 | : "r" (v1), "r" (v2), "m" (val), "0" (res));\ |
| 375 | printf("%-10s R=" FMTLX "\n", "cmov" JCC "q", res);)\ |
| 376 | asm("cmpl %2, %1\n\t"\ |
| 377 | "cmov" JCC "l %k3, %k0\n\t"\ |
| 378 | : "=r" (res)\ |
| 379 | : "r" (v1), "r" (v2), "m" (val), "0" (res));\ |
| 380 | printf("%-10s R=" FMTLX "\n", "cmov" JCC "l", res);\ |
| 381 | asm("cmpl %2, %1\n\t"\ |
| 382 | "cmov" JCC "w %w3, %w0\n\t"\ |
| 383 | : "=r" (res)\ |
| 384 | : "r" (v1), "r" (v2), "r" (1), "0" (res));\ |
| 385 | printf("%-10s R=" FMTLX "\n", "cmov" JCC "w", res);\ |
| 386 | } \ |
| 387 | } |
| 388 | |
| 389 | /* various jump tests */ |
| 390 | void test_jcc(void) |
| 391 | { |
| 392 | TEST_JCC("ne", 1, 1); |
| 393 | TEST_JCC("ne", 1, 0); |
| 394 | |
| 395 | TEST_JCC("e", 1, 1); |
| 396 | TEST_JCC("e", 1, 0); |
| 397 | |
| 398 | TEST_JCC("l", 1, 1); |
| 399 | TEST_JCC("l", 1, 0); |
| 400 | TEST_JCC("l", 1, -1); |
| 401 | |
| 402 | TEST_JCC("le", 1, 1); |
| 403 | TEST_JCC("le", 1, 0); |
| 404 | TEST_JCC("le", 1, -1); |
| 405 | |
| 406 | TEST_JCC("ge", 1, 1); |
| 407 | TEST_JCC("ge", 1, 0); |
| 408 | TEST_JCC("ge", -1, 1); |
| 409 | |
| 410 | TEST_JCC("g", 1, 1); |
| 411 | TEST_JCC("g", 1, 0); |
| 412 | TEST_JCC("g", 1, -1); |
| 413 | |
| 414 | TEST_JCC("b", 1, 1); |
| 415 | TEST_JCC("b", 1, 0); |
| 416 | TEST_JCC("b", 1, -1); |
| 417 | |
| 418 | TEST_JCC("be", 1, 1); |
| 419 | TEST_JCC("be", 1, 0); |
| 420 | TEST_JCC("be", 1, -1); |
| 421 | |
| 422 | TEST_JCC("ae", 1, 1); |
| 423 | TEST_JCC("ae", 1, 0); |
| 424 | TEST_JCC("ae", 1, -1); |
| 425 | |
| 426 | TEST_JCC("a", 1, 1); |
| 427 | TEST_JCC("a", 1, 0); |
| 428 | TEST_JCC("a", 1, -1); |
| 429 | |
| 430 | |
| 431 | TEST_JCC("p", 1, 1); |
| 432 | TEST_JCC("p", 1, 0); |
| 433 | |
| 434 | TEST_JCC("np", 1, 1); |
| 435 | TEST_JCC("np", 1, 0); |
| 436 | |
| 437 | TEST_JCC("o", 0x7fffffff, 0); |
| 438 | TEST_JCC("o", 0x7fffffff, -1); |
| 439 | |
| 440 | TEST_JCC("no", 0x7fffffff, 0); |
| 441 | TEST_JCC("no", 0x7fffffff, -1); |
| 442 | |
| 443 | TEST_JCC("s", 0, 1); |
| 444 | TEST_JCC("s", 0, -1); |
| 445 | TEST_JCC("s", 0, 0); |
| 446 | |
| 447 | TEST_JCC("ns", 0, 1); |
| 448 | TEST_JCC("ns", 0, -1); |
| 449 | TEST_JCC("ns", 0, 0); |
| 450 | } |
| 451 | |
| 452 | #define TEST_LOOP(insn) \ |
| 453 | {\ |
| 454 | for(i = 0; i < sizeof(ecx_vals) / sizeof(long); i++) {\ |
| 455 | ecx = ecx_vals[i];\ |
| 456 | for(zf = 0; zf < 2; zf++) {\ |
| 457 | asm("test %2, %2\n\t"\ |
| 458 | "movl $1, %0\n\t"\ |
| 459 | insn " 1f\n\t" \ |
| 460 | "movl $0, %0\n\t"\ |
| 461 | "1:\n\t"\ |
| 462 | : "=a" (res)\ |
| 463 | : "c" (ecx), "b" (!zf)); \ |
| 464 | printf("%-10s ECX=" FMTLX " ZF=%ld r=%d\n", insn, ecx, zf, res); \ |
| 465 | }\ |
| 466 | }\ |
| 467 | } |
| 468 | |
| 469 | void test_loop(void) |
| 470 | { |
| 471 | long ecx, zf; |
| 472 | const long ecx_vals[] = { |
| 473 | 0, |
| 474 | 1, |
| 475 | 0x10000, |
| 476 | 0x10001, |
| 477 | #if defined(__x86_64__) |
| 478 | 0x100000000L, |
| 479 | 0x100000001L, |
| 480 | #endif |
| 481 | }; |
| 482 | int i, res; |
| 483 | |
| 484 | #if !defined(__x86_64__) |
| 485 | TEST_LOOP("jcxz"); |
| 486 | TEST_LOOP("loopw"); |
| 487 | TEST_LOOP("loopzw"); |
| 488 | TEST_LOOP("loopnzw"); |
| 489 | #endif |
| 490 | |
| 491 | TEST_LOOP("jecxz"); |
| 492 | TEST_LOOP("loopl"); |
| 493 | TEST_LOOP("loopzl"); |
| 494 | TEST_LOOP("loopnzl"); |
| 495 | } |
| 496 | |
| 497 | #undef CC_MASK |
| 498 | #ifdef TEST_P4_FLAGS |
| 499 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A) |
| 500 | #else |
| 501 | #define CC_MASK (CC_O | CC_C) |
| 502 | #endif |
| 503 | |
| 504 | #define OP mul |
| 505 | #include "test-i386-muldiv.h" |
| 506 | |
| 507 | #define OP imul |
| 508 | #include "test-i386-muldiv.h" |
| 509 | |
| 510 | void test_imulw2(long op0, long op1) |
| 511 | { |
| 512 | long res, s1, s0, flags; |
| 513 | s0 = op0; |
| 514 | s1 = op1; |
| 515 | res = s0; |
| 516 | flags = 0; |
| 517 | asm volatile ("push %4\n\t" |
| 518 | "popf\n\t" |
| 519 | "imulw %w2, %w0\n\t" |
| 520 | "pushf\n\t" |
| 521 | "pop %1\n\t" |
| 522 | : "=q" (res), "=g" (flags) |
| 523 | : "q" (s1), "0" (res), "1" (flags)); |
| 524 | printf("%-10s A=" FMTLX " B=" FMTLX " R=" FMTLX " CC=%04lx\n", |
| 525 | "imulw", s0, s1, res, flags & CC_MASK); |
| 526 | } |
| 527 | |
| 528 | void test_imull2(long op0, long op1) |
| 529 | { |
| 530 | long res, s1, s0, flags; |
| 531 | s0 = op0; |
| 532 | s1 = op1; |
| 533 | res = s0; |
| 534 | flags = 0; |
| 535 | asm volatile ("push %4\n\t" |
| 536 | "popf\n\t" |
| 537 | "imull %k2, %k0\n\t" |
| 538 | "pushf\n\t" |
| 539 | "pop %1\n\t" |
| 540 | : "=q" (res), "=g" (flags) |
| 541 | : "q" (s1), "0" (res), "1" (flags)); |
| 542 | printf("%-10s A=" FMTLX " B=" FMTLX " R=" FMTLX " CC=%04lx\n", |
| 543 | "imull", s0, s1, res, flags & CC_MASK); |
| 544 | } |
| 545 | |
| 546 | #if defined(__x86_64__) |
| 547 | void test_imulq2(long op0, long op1) |
| 548 | { |
| 549 | long res, s1, s0, flags; |
| 550 | s0 = op0; |
| 551 | s1 = op1; |
| 552 | res = s0; |
| 553 | flags = 0; |
| 554 | asm volatile ("push %4\n\t" |
| 555 | "popf\n\t" |
| 556 | "imulq %2, %0\n\t" |
| 557 | "pushf\n\t" |
| 558 | "pop %1\n\t" |
| 559 | : "=q" (res), "=g" (flags) |
| 560 | : "q" (s1), "0" (res), "1" (flags)); |
| 561 | printf("%-10s A=" FMTLX " B=" FMTLX " R=" FMTLX " CC=%04lx\n", |
| 562 | "imulq", s0, s1, res, flags & CC_MASK); |
| 563 | } |
| 564 | #endif |
| 565 | |
| 566 | #define TEST_IMUL_IM(size, rsize, op0, op1)\ |
| 567 | {\ |
| 568 | long res, flags, s1;\ |
| 569 | flags = 0;\ |
| 570 | res = 0;\ |
| 571 | s1 = op1;\ |
| 572 | asm volatile ("push %3\n\t"\ |
| 573 | "popf\n\t"\ |
| 574 | "imul" size " $" #op0 ", %" rsize "2, %" rsize "0\n\t" \ |
| 575 | "pushf\n\t"\ |
| 576 | "pop %1\n\t"\ |
| 577 | : "=r" (res), "=g" (flags)\ |
| 578 | : "r" (s1), "1" (flags), "0" (res));\ |
| 579 | printf("%-10s A=" FMTLX " B=" FMTLX " R=" FMTLX " CC=%04lx\n",\ |
| 580 | "imul" size " im", (long)op0, (long)op1, res, flags & CC_MASK);\ |
| 581 | } |
| 582 | |
| 583 | |
| 584 | #undef CC_MASK |
| 585 | #define CC_MASK (0) |
| 586 | |
| 587 | #define OP div |
| 588 | #include "test-i386-muldiv.h" |
| 589 | |
| 590 | #define OP idiv |
| 591 | #include "test-i386-muldiv.h" |
| 592 | |
| 593 | void test_mul(void) |
| 594 | { |
| 595 | test_imulb(0x1234561d, 4); |
| 596 | test_imulb(3, -4); |
| 597 | test_imulb(0x80, 0x80); |
| 598 | test_imulb(0x10, 0x10); |
| 599 | |
| 600 | test_imulw(0, 0x1234001d, 45); |
| 601 | test_imulw(0, 23, -45); |
| 602 | test_imulw(0, 0x8000, 0x8000); |
| 603 | test_imulw(0, 0x100, 0x100); |
| 604 | |
| 605 | test_imull(0, 0x1234001d, 45); |
| 606 | test_imull(0, 23, -45); |
| 607 | test_imull(0, 0x80000000, 0x80000000); |
| 608 | test_imull(0, 0x10000, 0x10000); |
| 609 | |
| 610 | test_mulb(0x1234561d, 4); |
| 611 | test_mulb(3, -4); |
| 612 | test_mulb(0x80, 0x80); |
| 613 | test_mulb(0x10, 0x10); |
| 614 | |
| 615 | test_mulw(0, 0x1234001d, 45); |
| 616 | test_mulw(0, 23, -45); |
| 617 | test_mulw(0, 0x8000, 0x8000); |
| 618 | test_mulw(0, 0x100, 0x100); |
| 619 | |
| 620 | test_mull(0, 0x1234001d, 45); |
| 621 | test_mull(0, 23, -45); |
| 622 | test_mull(0, 0x80000000, 0x80000000); |
| 623 | test_mull(0, 0x10000, 0x10000); |
| 624 | |
| 625 | test_imulw2(0x1234001d, 45); |
| 626 | test_imulw2(23, -45); |
| 627 | test_imulw2(0x8000, 0x8000); |
| 628 | test_imulw2(0x100, 0x100); |
| 629 | |
| 630 | test_imull2(0x1234001d, 45); |
| 631 | test_imull2(23, -45); |
| 632 | test_imull2(0x80000000, 0x80000000); |
| 633 | test_imull2(0x10000, 0x10000); |
| 634 | |
| 635 | TEST_IMUL_IM("w", "w", 45, 0x1234); |
| 636 | TEST_IMUL_IM("w", "w", -45, 23); |
| 637 | TEST_IMUL_IM("w", "w", 0x8000, 0x80000000); |
| 638 | TEST_IMUL_IM("w", "w", 0x7fff, 0x1000); |
| 639 | |
| 640 | TEST_IMUL_IM("l", "k", 45, 0x1234); |
| 641 | TEST_IMUL_IM("l", "k", -45, 23); |
| 642 | TEST_IMUL_IM("l", "k", 0x8000, 0x80000000); |
| 643 | TEST_IMUL_IM("l", "k", 0x7fff, 0x1000); |
| 644 | |
| 645 | test_idivb(0x12341678, 0x127e); |
| 646 | test_idivb(0x43210123, -5); |
| 647 | test_idivb(0x12340004, -1); |
| 648 | |
| 649 | test_idivw(0, 0x12345678, 12347); |
| 650 | test_idivw(0, -23223, -45); |
| 651 | test_idivw(0, 0x12348000, -1); |
| 652 | test_idivw(0x12343, 0x12345678, 0x81238567); |
| 653 | |
| 654 | test_idivl(0, 0x12345678, 12347); |
| 655 | test_idivl(0, -233223, -45); |
| 656 | test_idivl(0, 0x80000000, -1); |
| 657 | test_idivl(0x12343, 0x12345678, 0x81234567); |
| 658 | |
| 659 | test_divb(0x12341678, 0x127e); |
| 660 | test_divb(0x43210123, -5); |
| 661 | test_divb(0x12340004, -1); |
| 662 | |
| 663 | test_divw(0, 0x12345678, 12347); |
| 664 | test_divw(0, -23223, -45); |
| 665 | test_divw(0, 0x12348000, -1); |
| 666 | test_divw(0x12343, 0x12345678, 0x81238567); |
| 667 | |
| 668 | test_divl(0, 0x12345678, 12347); |
| 669 | test_divl(0, -233223, -45); |
| 670 | test_divl(0, 0x80000000, -1); |
| 671 | test_divl(0x12343, 0x12345678, 0x81234567); |
| 672 | |
| 673 | #if defined(__x86_64__) |
| 674 | test_imulq(0, 0x1234001d1234001d, 45); |
| 675 | test_imulq(0, 23, -45); |
| 676 | test_imulq(0, 0x8000000000000000, 0x8000000000000000); |
| 677 | test_imulq(0, 0x100000000, 0x100000000); |
| 678 | |
| 679 | test_mulq(0, 0x1234001d1234001d, 45); |
| 680 | test_mulq(0, 23, -45); |
| 681 | test_mulq(0, 0x8000000000000000, 0x8000000000000000); |
| 682 | test_mulq(0, 0x100000000, 0x100000000); |
| 683 | |
| 684 | test_imulq2(0x1234001d1234001d, 45); |
| 685 | test_imulq2(23, -45); |
| 686 | test_imulq2(0x8000000000000000, 0x8000000000000000); |
| 687 | test_imulq2(0x100000000, 0x100000000); |
| 688 | |
| 689 | TEST_IMUL_IM("q", "", 45, 0x12341234); |
| 690 | TEST_IMUL_IM("q", "", -45, 23); |
| 691 | TEST_IMUL_IM("q", "", 0x8000, 0x8000000000000000); |
| 692 | TEST_IMUL_IM("q", "", 0x7fff, 0x10000000); |
| 693 | |
| 694 | test_idivq(0, 0x12345678abcdef, 12347); |
| 695 | test_idivq(0, -233223, -45); |
| 696 | test_idivq(0, 0x8000000000000000, -1); |
| 697 | test_idivq(0x12343, 0x12345678, 0x81234567); |
| 698 | |
| 699 | test_divq(0, 0x12345678abcdef, 12347); |
| 700 | test_divq(0, -233223, -45); |
| 701 | test_divq(0, 0x8000000000000000, -1); |
| 702 | test_divq(0x12343, 0x12345678, 0x81234567); |
| 703 | #endif |
| 704 | } |
| 705 | |
| 706 | #define TEST_BSX(op, size, op0)\ |
| 707 | {\ |
| 708 | long res, val, resz;\ |
| 709 | val = op0;\ |
| 710 | asm("xor %1, %1\n"\ |
| 711 | "mov $0x12345678, %0\n"\ |
| 712 | #op " %" size "2, %" size "0 ; setz %b1" \ |
| 713 | : "=&r" (res), "=&q" (resz)\ |
| 714 | : "r" (val));\ |
| 715 | printf("%-10s A=" FMTLX " R=" FMTLX " %ld\n", #op, val, res, resz);\ |
| 716 | } |
| 717 | |
| 718 | void test_xcnt(void) |
| 719 | { |
| 720 | TEST_BSX(tzcntw, "w", 0); |
| 721 | TEST_BSX(tzcntw, "w", 0x12340128); |
| 722 | TEST_BSX(lzcntw, "w", 0); |
| 723 | TEST_BSX(lzcntw, "w", 0x12340128); |
| 724 | TEST_BSX(popcntw, "w", 0); |
| 725 | TEST_BSX(popcntw, "w", 0x12340128); |
| 726 | TEST_BSX(tzcntl, "k", 0); |
| 727 | TEST_BSX(tzcntl, "k", 0x00340128); |
| 728 | TEST_BSX(lzcntl, "k", 0); |
| 729 | TEST_BSX(lzcntl, "k", 0x00340128); |
| 730 | TEST_BSX(popcntl, "k", 0); |
| 731 | TEST_BSX(popcntl, "k", 0x00340128); |
| 732 | #if defined(__x86_64__) |
| 733 | TEST_BSX(tzcntq, "", 0); |
| 734 | TEST_BSX(tzcntq, "", 0x003401281234); |
| 735 | TEST_BSX(lzcntq, "", 0); |
| 736 | TEST_BSX(lzcntq, "", 0x003401281234); |
| 737 | TEST_BSX(popcntq, "", 0); |
| 738 | TEST_BSX(popcntq, "", 0x003401281234); |
| 739 | #endif |
| 740 | } |
| 741 | |
| 742 | void test_bsx(void) |
| 743 | { |
| 744 | TEST_BSX(bsrw, "w", 0); |
| 745 | TEST_BSX(bsrw, "w", 0x12340128); |
| 746 | TEST_BSX(bsfw, "w", 0); |
| 747 | TEST_BSX(bsfw, "w", 0x12340128); |
| 748 | TEST_BSX(bsrl, "k", 0); |
| 749 | TEST_BSX(bsrl, "k", 0x00340128); |
| 750 | TEST_BSX(bsfl, "k", 0); |
| 751 | TEST_BSX(bsfl, "k", 0x00340128); |
| 752 | #if defined(__x86_64__) |
| 753 | TEST_BSX(bsrq, "", 0); |
| 754 | TEST_BSX(bsrq, "", 0x003401281234); |
| 755 | TEST_BSX(bsfq, "", 0); |
| 756 | TEST_BSX(bsfq, "", 0x003401281234); |
| 757 | #endif |
| 758 | } |
| 759 | |
| 760 | /**********************************************/ |
| 761 | |
| 762 | union float64u { |
| 763 | double d; |
| 764 | uint64_t l; |
| 765 | }; |
| 766 | |
| 767 | union float64u q_nan = { .l = 0xFFF8000000000000LL }; |
| 768 | union float64u s_nan = { .l = 0xFFF0000000000000LL }; |
| 769 | |
| 770 | void test_fops(double a, double b) |
| 771 | { |
| 772 | printf("a=%f b=%f a+b=%f\n", a, b, a + b); |
| 773 | printf("a=%f b=%f a-b=%f\n", a, b, a - b); |
| 774 | printf("a=%f b=%f a*b=%f\n", a, b, a * b); |
| 775 | printf("a=%f b=%f a/b=%f\n", a, b, a / b); |
| 776 | printf("a=%f b=%f fmod(a, b)=%f\n", a, b, fmod(a, b)); |
| 777 | printf("a=%f sqrt(a)=%f\n", a, sqrt(a)); |
| 778 | printf("a=%f sin(a)=%f\n", a, sin(a)); |
| 779 | printf("a=%f cos(a)=%f\n", a, cos(a)); |
| 780 | printf("a=%f tan(a)=%f\n", a, tan(a)); |
| 781 | printf("a=%f log(a)=%f\n", a, log(a)); |
| 782 | printf("a=%f exp(a)=%f\n", a, exp(a)); |
| 783 | printf("a=%f b=%f atan2(a, b)=%f\n", a, b, atan2(a, b)); |
| 784 | /* just to test some op combining */ |
| 785 | printf("a=%f asin(sin(a))=%f\n", a, asin(sin(a))); |
| 786 | printf("a=%f acos(cos(a))=%f\n", a, acos(cos(a))); |
| 787 | printf("a=%f atan(tan(a))=%f\n", a, atan(tan(a))); |
| 788 | |
| 789 | } |
| 790 | |
| 791 | void fpu_clear_exceptions(void) |
| 792 | { |
| 793 | struct QEMU_PACKED { |
| 794 | uint16_t fpuc; |
| 795 | uint16_t dummy1; |
| 796 | uint16_t fpus; |
| 797 | uint16_t dummy2; |
| 798 | uint16_t fptag; |
| 799 | uint16_t dummy3; |
| 800 | uint32_t ignored[4]; |
| 801 | long double fpregs[8]; |
| 802 | } float_env32; |
| 803 | |
| 804 | asm volatile ("fnstenv %0\n" : "=m" (float_env32)); |
| 805 | float_env32.fpus &= ~0x7f; |
| 806 | asm volatile ("fldenv %0\n" : : "m" (float_env32)); |
| 807 | } |
| 808 | |
| 809 | /* XXX: display exception bits when supported */ |
| 810 | #define FPUS_EMASK 0x0000 |
| 811 | //#define FPUS_EMASK 0x007f |
| 812 | |
| 813 | void test_fcmp(double a, double b) |
| 814 | { |
| 815 | long eflags, fpus; |
| 816 | |
| 817 | fpu_clear_exceptions(); |
| 818 | asm("fcom %2\n" |
| 819 | "fstsw %%ax\n" |
| 820 | : "=a" (fpus) |
| 821 | : "t" (a), "u" (b)); |
| 822 | printf("fcom(%f %f)=%04lx\n", |
| 823 | a, b, fpus & (0x4500 | FPUS_EMASK)); |
| 824 | fpu_clear_exceptions(); |
| 825 | asm("fucom %2\n" |
| 826 | "fstsw %%ax\n" |
| 827 | : "=a" (fpus) |
| 828 | : "t" (a), "u" (b)); |
| 829 | printf("fucom(%f %f)=%04lx\n", |
| 830 | a, b, fpus & (0x4500 | FPUS_EMASK)); |
| 831 | if (TEST_FCOMI) { |
| 832 | /* test f(u)comi instruction */ |
| 833 | fpu_clear_exceptions(); |
| 834 | asm("fcomi %3, %2\n" |
| 835 | "fstsw %%ax\n" |
| 836 | "pushf\n" |
| 837 | "pop %0\n" |
| 838 | : "=r" (eflags), "=a" (fpus) |
| 839 | : "t" (a), "u" (b)); |
| 840 | printf("fcomi(%f %f)=%04lx %02lx\n", |
| 841 | a, b, fpus & FPUS_EMASK, eflags & (CC_Z | CC_P | CC_C)); |
| 842 | fpu_clear_exceptions(); |
| 843 | asm("fucomi %3, %2\n" |
| 844 | "fstsw %%ax\n" |
| 845 | "pushf\n" |
| 846 | "pop %0\n" |
| 847 | : "=r" (eflags), "=a" (fpus) |
| 848 | : "t" (a), "u" (b)); |
| 849 | printf("fucomi(%f %f)=%04lx %02lx\n", |
| 850 | a, b, fpus & FPUS_EMASK, eflags & (CC_Z | CC_P | CC_C)); |
| 851 | } |
| 852 | fpu_clear_exceptions(); |
| 853 | asm volatile("fxam\n" |
| 854 | "fstsw %%ax\n" |
| 855 | : "=a" (fpus) |
| 856 | : "t" (a)); |
| 857 | printf("fxam(%f)=%04lx\n", a, fpus & 0x4700); |
| 858 | fpu_clear_exceptions(); |
| 859 | } |
| 860 | |
| 861 | void test_fcvt(double a) |
| 862 | { |
| 863 | float fa; |
| 864 | long double la; |
| 865 | int16_t fpuc; |
| 866 | int i; |
| 867 | int64_t lla; |
| 868 | int ia; |
| 869 | int16_t wa; |
| 870 | double ra; |
| 871 | |
| 872 | fa = a; |
| 873 | la = a; |
| 874 | printf("(float)%f = %f\n", a, fa); |
| 875 | printf("(long double)%f = %Lf\n", a, la); |
| 876 | printf("a=" FMT64X "\n", *(uint64_t *)&a); |
| 877 | printf("la=" FMT64X " %04x\n", *(uint64_t *)&la, |
| 878 | *(unsigned short *)((char *)(&la) + 8)); |
| 879 | |
| 880 | /* test all roundings */ |
| 881 | asm volatile ("fstcw %0" : "=m" (fpuc)); |
| 882 | for(i=0;i<4;i++) { |
| 883 | uint16_t val16; |
| 884 | val16 = (fpuc & ~0x0c00) | (i << 10); |
| 885 | asm volatile ("fldcw %0" : : "m" (val16)); |
| 886 | asm volatile ("fists %0" : "=m" (wa) : "t" (a)); |
| 887 | asm volatile ("fistl %0" : "=m" (ia) : "t" (a)); |
| 888 | asm volatile ("fistpll %0" : "=m" (lla) : "t" (a) : "st"); |
| 889 | asm volatile ("frndint ; fstl %0" : "=m" (ra) : "t" (a)); |
| 890 | asm volatile ("fldcw %0" : : "m" (fpuc)); |
| 891 | printf("(short)a = %d\n", wa); |
| 892 | printf("(int)a = %d\n", ia); |
| 893 | printf("(int64_t)a = " FMT64X "\n", lla); |
| 894 | printf("rint(a) = %f\n", ra); |
| 895 | } |
| 896 | } |
| 897 | |
| 898 | #define TEST(N) \ |
| 899 | asm("fld" #N : "=t" (a)); \ |
| 900 | printf("fld" #N "= %f\n", a); |
| 901 | |
| 902 | void test_fconst(void) |
| 903 | { |
| 904 | double a; |
| 905 | TEST(1); |
| 906 | TEST(l2t); |
| 907 | TEST(l2e); |
| 908 | TEST(pi); |
| 909 | TEST(lg2); |
| 910 | TEST(ln2); |
| 911 | TEST(z); |
| 912 | } |
| 913 | |
| 914 | void test_fbcd(double a) |
| 915 | { |
| 916 | unsigned short bcd[5]; |
| 917 | double b; |
| 918 | |
| 919 | asm("fbstp %0" : "=m" (bcd[0]) : "t" (a) : "st"); |
| 920 | asm("fbld %1" : "=t" (b) : "m" (bcd[0])); |
| 921 | printf("a=%f bcd=%04x%04x%04x%04x%04x b=%f\n", |
| 922 | a, bcd[4], bcd[3], bcd[2], bcd[1], bcd[0], b); |
| 923 | } |
| 924 | |
| 925 | #define TEST_ENV(env, save, restore)\ |
| 926 | {\ |
| 927 | memset((env), 0xaa, sizeof(*(env)));\ |
| 928 | for(i=0;i<5;i++)\ |
| 929 | asm volatile ("fldl %0" : : "m" (dtab[i]));\ |
| 930 | asm volatile (save " %0\n" : : "m" (*(env)));\ |
| 931 | asm volatile (restore " %0\n": : "m" (*(env)));\ |
| 932 | for(i=0;i<5;i++)\ |
| 933 | asm volatile ("fstpl %0" : "=m" (rtab[i]));\ |
| 934 | for(i=0;i<5;i++)\ |
| 935 | printf("res[%d]=%f\n", i, rtab[i]);\ |
| 936 | printf("fpuc=%04x fpus=%04x fptag=%04x\n",\ |
| 937 | (env)->fpuc,\ |
| 938 | (env)->fpus & 0xff00,\ |
| 939 | (env)->fptag);\ |
| 940 | } |
| 941 | |
| 942 | void test_fenv(void) |
| 943 | { |
| 944 | struct __attribute__((__packed__)) { |
| 945 | uint16_t fpuc; |
| 946 | uint16_t dummy1; |
| 947 | uint16_t fpus; |
| 948 | uint16_t dummy2; |
| 949 | uint16_t fptag; |
| 950 | uint16_t dummy3; |
| 951 | uint32_t ignored[4]; |
| 952 | long double fpregs[8]; |
| 953 | } float_env32; |
| 954 | struct __attribute__((__packed__)) { |
| 955 | uint16_t fpuc; |
| 956 | uint16_t fpus; |
| 957 | uint16_t fptag; |
| 958 | uint16_t ignored[4]; |
| 959 | long double fpregs[8]; |
| 960 | } float_env16; |
| 961 | double dtab[8]; |
| 962 | double rtab[8]; |
| 963 | int i; |
| 964 | |
| 965 | for(i=0;i<8;i++) |
| 966 | dtab[i] = i + 1; |
| 967 | |
| 968 | TEST_ENV(&float_env16, "data16 fnstenv", "data16 fldenv"); |
| 969 | TEST_ENV(&float_env16, "data16 fnsave", "data16 frstor"); |
| 970 | TEST_ENV(&float_env32, "fnstenv", "fldenv"); |
| 971 | TEST_ENV(&float_env32, "fnsave", "frstor"); |
| 972 | |
| 973 | /* test for ffree */ |
| 974 | for(i=0;i<5;i++) |
| 975 | asm volatile ("fldl %0" : : "m" (dtab[i])); |
| 976 | asm volatile("ffree %st(2)"); |
| 977 | asm volatile ("fnstenv %0\n" : : "m" (float_env32)); |
| 978 | asm volatile ("fninit"); |
| 979 | printf("fptag=%04x\n", float_env32.fptag); |
| 980 | } |
| 981 | |
| 982 | |
| 983 | #define TEST_FCMOV(a, b, eflags, CC)\ |
| 984 | {\ |
| 985 | double res;\ |
| 986 | asm("push %3\n"\ |
| 987 | "popf\n"\ |
| 988 | "fcmov" CC " %2, %0\n"\ |
| 989 | : "=t" (res)\ |
| 990 | : "0" (a), "u" (b), "g" (eflags));\ |
| 991 | printf("fcmov%s eflags=0x%04lx-> %f\n", \ |
| 992 | CC, (long)eflags, res);\ |
| 993 | } |
| 994 | |
| 995 | void test_fcmov(void) |
| 996 | { |
| 997 | double a, b; |
| 998 | long eflags, i; |
| 999 | |
| 1000 | a = 1.0; |
| 1001 | b = 2.0; |
| 1002 | for(i = 0; i < 4; i++) { |
| 1003 | eflags = 0; |
| 1004 | if (i & 1) |
| 1005 | eflags |= CC_C; |
| 1006 | if (i & 2) |
| 1007 | eflags |= CC_Z; |
| 1008 | TEST_FCMOV(a, b, eflags, "b"); |
| 1009 | TEST_FCMOV(a, b, eflags, "e"); |
| 1010 | TEST_FCMOV(a, b, eflags, "be"); |
| 1011 | TEST_FCMOV(a, b, eflags, "nb"); |
| 1012 | TEST_FCMOV(a, b, eflags, "ne"); |
| 1013 | TEST_FCMOV(a, b, eflags, "nbe"); |
| 1014 | } |
| 1015 | TEST_FCMOV(a, b, 0, "u"); |
| 1016 | TEST_FCMOV(a, b, CC_P, "u"); |
| 1017 | TEST_FCMOV(a, b, 0, "nu"); |
| 1018 | TEST_FCMOV(a, b, CC_P, "nu"); |
| 1019 | } |
| 1020 | |
| 1021 | void test_floats(void) |
| 1022 | { |
| 1023 | test_fops(2, 3); |
| 1024 | test_fops(1.4, -5); |
| 1025 | test_fcmp(2, -1); |
| 1026 | test_fcmp(2, 2); |
| 1027 | test_fcmp(2, 3); |
| 1028 | test_fcmp(2, q_nan.d); |
| 1029 | test_fcmp(q_nan.d, -1); |
| 1030 | test_fcmp(-1.0/0.0, -1); |
| 1031 | test_fcmp(1.0/0.0, -1); |
| 1032 | test_fcvt(0.5); |
| 1033 | test_fcvt(-0.5); |
| 1034 | test_fcvt(1.0/7.0); |
| 1035 | test_fcvt(-1.0/9.0); |
| 1036 | test_fcvt(32768); |
| 1037 | test_fcvt(-1e20); |
| 1038 | test_fcvt(-1.0/0.0); |
| 1039 | test_fcvt(1.0/0.0); |
| 1040 | test_fcvt(q_nan.d); |
| 1041 | test_fconst(); |
| 1042 | test_fbcd(1234567890123456.0); |
| 1043 | test_fbcd(-123451234567890.0); |
| 1044 | test_fenv(); |
| 1045 | if (TEST_CMOV) { |
| 1046 | test_fcmov(); |
| 1047 | } |
| 1048 | } |
| 1049 | |
| 1050 | /**********************************************/ |
| 1051 | #if !defined(__x86_64__) |
| 1052 | |
| 1053 | #define TEST_BCD(op, op0, cc_in, cc_mask)\ |
| 1054 | {\ |
| 1055 | int res, flags;\ |
| 1056 | res = op0;\ |
| 1057 | flags = cc_in;\ |
| 1058 | asm ("push %3\n\t"\ |
| 1059 | "popf\n\t"\ |
| 1060 | #op "\n\t"\ |
| 1061 | "pushf\n\t"\ |
| 1062 | "pop %1\n\t"\ |
| 1063 | : "=a" (res), "=g" (flags)\ |
| 1064 | : "0" (res), "1" (flags));\ |
| 1065 | printf("%-10s A=%08x R=%08x CCIN=%04x CC=%04x\n",\ |
| 1066 | #op, op0, res, cc_in, flags & cc_mask);\ |
| 1067 | } |
| 1068 | |
| 1069 | void test_bcd(void) |
| 1070 | { |
| 1071 | TEST_BCD(daa, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1072 | TEST_BCD(daa, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1073 | TEST_BCD(daa, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1074 | TEST_BCD(daa, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1075 | TEST_BCD(daa, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1076 | TEST_BCD(daa, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1077 | TEST_BCD(daa, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1078 | TEST_BCD(daa, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1079 | TEST_BCD(daa, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1080 | TEST_BCD(daa, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1081 | TEST_BCD(daa, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1082 | TEST_BCD(daa, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1083 | TEST_BCD(daa, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1084 | |
| 1085 | TEST_BCD(das, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1086 | TEST_BCD(das, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1087 | TEST_BCD(das, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1088 | TEST_BCD(das, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1089 | TEST_BCD(das, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1090 | TEST_BCD(das, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1091 | TEST_BCD(das, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1092 | TEST_BCD(das, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1093 | TEST_BCD(das, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1094 | TEST_BCD(das, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1095 | TEST_BCD(das, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1096 | TEST_BCD(das, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1097 | TEST_BCD(das, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 1098 | |
| 1099 | TEST_BCD(aaa, 0x12340205, CC_A, (CC_C | CC_A)); |
| 1100 | TEST_BCD(aaa, 0x12340306, CC_A, (CC_C | CC_A)); |
| 1101 | TEST_BCD(aaa, 0x1234040a, CC_A, (CC_C | CC_A)); |
| 1102 | TEST_BCD(aaa, 0x123405fa, CC_A, (CC_C | CC_A)); |
| 1103 | TEST_BCD(aaa, 0x12340205, 0, (CC_C | CC_A)); |
| 1104 | TEST_BCD(aaa, 0x12340306, 0, (CC_C | CC_A)); |
| 1105 | TEST_BCD(aaa, 0x1234040a, 0, (CC_C | CC_A)); |
| 1106 | TEST_BCD(aaa, 0x123405fa, 0, (CC_C | CC_A)); |
| 1107 | |
| 1108 | TEST_BCD(aas, 0x12340205, CC_A, (CC_C | CC_A)); |
| 1109 | TEST_BCD(aas, 0x12340306, CC_A, (CC_C | CC_A)); |
| 1110 | TEST_BCD(aas, 0x1234040a, CC_A, (CC_C | CC_A)); |
| 1111 | TEST_BCD(aas, 0x123405fa, CC_A, (CC_C | CC_A)); |
| 1112 | TEST_BCD(aas, 0x12340205, 0, (CC_C | CC_A)); |
| 1113 | TEST_BCD(aas, 0x12340306, 0, (CC_C | CC_A)); |
| 1114 | TEST_BCD(aas, 0x1234040a, 0, (CC_C | CC_A)); |
| 1115 | TEST_BCD(aas, 0x123405fa, 0, (CC_C | CC_A)); |
| 1116 | |
| 1117 | TEST_BCD(aam, 0x12340547, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)); |
| 1118 | TEST_BCD(aad, 0x12340407, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)); |
| 1119 | } |
| 1120 | #endif |
| 1121 | |
| 1122 | #define TEST_XCHG(op, size, opconst)\ |
| 1123 | {\ |
| 1124 | long op0, op1;\ |
| 1125 | op0 = i2l(0x12345678);\ |
| 1126 | op1 = i2l(0xfbca7654);\ |
| 1127 | asm(#op " %" size "0, %" size "1" \ |
| 1128 | : "=q" (op0), opconst (op1) \ |
| 1129 | : "0" (op0));\ |
| 1130 | printf("%-10s A=" FMTLX " B=" FMTLX "\n",\ |
| 1131 | #op, op0, op1);\ |
| 1132 | } |
| 1133 | |
| 1134 | #define TEST_CMPXCHG(op, size, opconst, eax)\ |
| 1135 | {\ |
| 1136 | long op0, op1, op2;\ |
| 1137 | op0 = i2l(0x12345678);\ |
| 1138 | op1 = i2l(0xfbca7654);\ |
| 1139 | op2 = i2l(eax);\ |
| 1140 | asm(#op " %" size "0, %" size "1" \ |
| 1141 | : "=q" (op0), opconst (op1) \ |
| 1142 | : "0" (op0), "a" (op2));\ |
| 1143 | printf("%-10s EAX=" FMTLX " A=" FMTLX " C=" FMTLX "\n",\ |
| 1144 | #op, op2, op0, op1);\ |
| 1145 | } |
| 1146 | |
| 1147 | void test_xchg(void) |
| 1148 | { |
| 1149 | #if defined(__x86_64__) |
| 1150 | TEST_XCHG(xchgq, "", "+q"); |
| 1151 | #endif |
| 1152 | TEST_XCHG(xchgl, "k", "+q"); |
| 1153 | TEST_XCHG(xchgw, "w", "+q"); |
| 1154 | TEST_XCHG(xchgb, "b", "+q"); |
| 1155 | |
| 1156 | #if defined(__x86_64__) |
| 1157 | TEST_XCHG(xchgq, "", "+m"); |
| 1158 | #endif |
| 1159 | TEST_XCHG(xchgl, "k", "+m"); |
| 1160 | TEST_XCHG(xchgw, "w", "+m"); |
| 1161 | TEST_XCHG(xchgb, "b", "+m"); |
| 1162 | |
| 1163 | #if defined(__x86_64__) |
| 1164 | TEST_XCHG(xaddq, "", "+q"); |
| 1165 | #endif |
| 1166 | TEST_XCHG(xaddl, "k", "+q"); |
| 1167 | TEST_XCHG(xaddw, "w", "+q"); |
| 1168 | TEST_XCHG(xaddb, "b", "+q"); |
| 1169 | |
| 1170 | { |
| 1171 | int res; |
| 1172 | res = 0x12345678; |
| 1173 | asm("xaddl %1, %0" : "=r" (res) : "0" (res)); |
| 1174 | printf("xaddl same res=%08x\n", res); |
| 1175 | } |
| 1176 | |
| 1177 | #if defined(__x86_64__) |
| 1178 | TEST_XCHG(xaddq, "", "+m"); |
| 1179 | #endif |
| 1180 | TEST_XCHG(xaddl, "k", "+m"); |
| 1181 | TEST_XCHG(xaddw, "w", "+m"); |
| 1182 | TEST_XCHG(xaddb, "b", "+m"); |
| 1183 | |
| 1184 | #if defined(__x86_64__) |
| 1185 | TEST_CMPXCHG(cmpxchgq, "", "+q", 0xfbca7654); |
| 1186 | #endif |
| 1187 | TEST_CMPXCHG(cmpxchgl, "k", "+q", 0xfbca7654); |
| 1188 | TEST_CMPXCHG(cmpxchgw, "w", "+q", 0xfbca7654); |
| 1189 | TEST_CMPXCHG(cmpxchgb, "b", "+q", 0xfbca7654); |
| 1190 | |
| 1191 | #if defined(__x86_64__) |
| 1192 | TEST_CMPXCHG(cmpxchgq, "", "+q", 0xfffefdfc); |
| 1193 | #endif |
| 1194 | TEST_CMPXCHG(cmpxchgl, "k", "+q", 0xfffefdfc); |
| 1195 | TEST_CMPXCHG(cmpxchgw, "w", "+q", 0xfffefdfc); |
| 1196 | TEST_CMPXCHG(cmpxchgb, "b", "+q", 0xfffefdfc); |
| 1197 | |
| 1198 | #if defined(__x86_64__) |
| 1199 | TEST_CMPXCHG(cmpxchgq, "", "+m", 0xfbca7654); |
| 1200 | #endif |
| 1201 | TEST_CMPXCHG(cmpxchgl, "k", "+m", 0xfbca7654); |
| 1202 | TEST_CMPXCHG(cmpxchgw, "w", "+m", 0xfbca7654); |
| 1203 | TEST_CMPXCHG(cmpxchgb, "b", "+m", 0xfbca7654); |
| 1204 | |
| 1205 | #if defined(__x86_64__) |
| 1206 | TEST_CMPXCHG(cmpxchgq, "", "+m", 0xfffefdfc); |
| 1207 | #endif |
| 1208 | TEST_CMPXCHG(cmpxchgl, "k", "+m", 0xfffefdfc); |
| 1209 | TEST_CMPXCHG(cmpxchgw, "w", "+m", 0xfffefdfc); |
| 1210 | TEST_CMPXCHG(cmpxchgb, "b", "+m", 0xfffefdfc); |
| 1211 | |
| 1212 | { |
| 1213 | uint64_t op0, op1, op2; |
| 1214 | long eax, edx; |
| 1215 | long i, eflags; |
| 1216 | |
| 1217 | for(i = 0; i < 2; i++) { |
| 1218 | op0 = 0x123456789abcdLL; |
| 1219 | eax = i2l(op0 & 0xffffffff); |
| 1220 | edx = i2l(op0 >> 32); |
| 1221 | if (i == 0) |
| 1222 | op1 = 0xfbca765423456LL; |
| 1223 | else |
| 1224 | op1 = op0; |
| 1225 | op2 = 0x6532432432434LL; |
| 1226 | asm("cmpxchg8b %2\n" |
| 1227 | "pushf\n" |
| 1228 | "pop %3\n" |
| 1229 | : "=a" (eax), "=d" (edx), "=m" (op1), "=g" (eflags) |
| 1230 | : "0" (eax), "1" (edx), "m" (op1), "b" ((int)op2), "c" ((int)(op2 >> 32))); |
| 1231 | printf("cmpxchg8b: eax=" FMTLX " edx=" FMTLX " op1=" FMT64X " CC=%02lx\n", |
| 1232 | eax, edx, op1, eflags & CC_Z); |
| 1233 | } |
| 1234 | } |
| 1235 | } |
| 1236 | |
| 1237 | #ifdef TEST_SEGS |
| 1238 | /**********************************************/ |
| 1239 | /* segmentation tests */ |
| 1240 | |
| 1241 | #include <sys/syscall.h> |
| 1242 | #include <unistd.h> |
| 1243 | #include <asm/ldt.h> |
| 1244 | #include <linux/version.h> |
| 1245 | |
| 1246 | static inline int modify_ldt(int func, void * ptr, unsigned long bytecount) |
| 1247 | { |
| 1248 | return syscall(__NR_modify_ldt, func, ptr, bytecount); |
| 1249 | } |
| 1250 | |
| 1251 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66) |
| 1252 | #define modify_ldt_ldt_s user_desc |
| 1253 | #endif |
| 1254 | |
| 1255 | #define MK_SEL(n) (((n) << 3) | 7) |
| 1256 | |
| 1257 | uint8_t seg_data1[4096]; |
| 1258 | uint8_t seg_data2[4096]; |
| 1259 | |
| 1260 | #define TEST_LR(op, size, seg, mask)\ |
| 1261 | {\ |
| 1262 | int res, res2;\ |
| 1263 | uint16_t mseg = seg;\ |
| 1264 | res = 0x12345678;\ |
| 1265 | asm (op " %" size "2, %" size "0\n" \ |
| 1266 | "movl $0, %1\n"\ |
| 1267 | "jnz 1f\n"\ |
| 1268 | "movl $1, %1\n"\ |
| 1269 | "1:\n"\ |
| 1270 | : "=r" (res), "=r" (res2) : "m" (mseg), "0" (res));\ |
| 1271 | printf(op ": Z=%d %08x\n", res2, res & ~(mask));\ |
| 1272 | } |
| 1273 | |
| 1274 | #define TEST_ARPL(op, size, op1, op2)\ |
| 1275 | {\ |
| 1276 | long a, b, c; \ |
| 1277 | a = (op1); \ |
| 1278 | b = (op2); \ |
| 1279 | asm volatile(op " %" size "3, %" size "0\n"\ |
| 1280 | "movl $0,%1\n"\ |
| 1281 | "jnz 1f\n"\ |
| 1282 | "movl $1,%1\n"\ |
| 1283 | "1:\n"\ |
| 1284 | : "=r" (a), "=r" (c) : "0" (a), "r" (b)); \ |
| 1285 | printf(op size " A=" FMTLX " B=" FMTLX " R=" FMTLX " z=%ld\n",\ |
| 1286 | (long)(op1), (long)(op2), a, c);\ |
| 1287 | } |
| 1288 | |
| 1289 | /* NOTE: we use Linux modify_ldt syscall */ |
| 1290 | void test_segs(void) |
| 1291 | { |
| 1292 | struct modify_ldt_ldt_s ldt; |
| 1293 | long long ldt_table[3]; |
| 1294 | int res, res2; |
| 1295 | char tmp; |
| 1296 | struct { |
| 1297 | uint32_t offset; |
| 1298 | uint16_t seg; |
| 1299 | } __attribute__((__packed__)) segoff; |
| 1300 | |
| 1301 | ldt.entry_number = 1; |
| 1302 | ldt.base_addr = (unsigned long)&seg_data1; |
| 1303 | ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12; |
| 1304 | ldt.seg_32bit = 1; |
| 1305 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 1306 | ldt.read_exec_only = 0; |
| 1307 | ldt.limit_in_pages = 1; |
| 1308 | ldt.seg_not_present = 0; |
| 1309 | ldt.useable = 1; |
| 1310 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1311 | |
| 1312 | ldt.entry_number = 2; |
| 1313 | ldt.base_addr = (unsigned long)&seg_data2; |
| 1314 | ldt.limit = (sizeof(seg_data2) + 0xfff) >> 12; |
| 1315 | ldt.seg_32bit = 1; |
| 1316 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 1317 | ldt.read_exec_only = 0; |
| 1318 | ldt.limit_in_pages = 1; |
| 1319 | ldt.seg_not_present = 0; |
| 1320 | ldt.useable = 1; |
| 1321 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1322 | |
| 1323 | modify_ldt(0, &ldt_table, sizeof(ldt_table)); /* read ldt entries */ |
| 1324 | #if 0 |
| 1325 | { |
| 1326 | int i; |
| 1327 | for(i=0;i<3;i++) |
| 1328 | printf("%d: %016Lx\n", i, ldt_table[i]); |
| 1329 | } |
| 1330 | #endif |
| 1331 | /* do some tests with fs or gs */ |
| 1332 | asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1))); |
| 1333 | |
| 1334 | seg_data1[1] = 0xaa; |
| 1335 | seg_data2[1] = 0x55; |
| 1336 | |
| 1337 | asm volatile ("fs movzbl 0x1, %0" : "=r" (res)); |
| 1338 | printf("FS[1] = %02x\n", res); |
| 1339 | |
| 1340 | asm volatile ("pushl %%gs\n" |
| 1341 | "movl %1, %%gs\n" |
| 1342 | "gs movzbl 0x1, %0\n" |
| 1343 | "popl %%gs\n" |
| 1344 | : "=r" (res) |
| 1345 | : "r" (MK_SEL(2))); |
| 1346 | printf("GS[1] = %02x\n", res); |
| 1347 | |
| 1348 | /* tests with ds/ss (implicit segment case) */ |
| 1349 | tmp = 0xa5; |
| 1350 | asm volatile ("pushl %%ebp\n\t" |
| 1351 | "pushl %%ds\n\t" |
| 1352 | "movl %2, %%ds\n\t" |
| 1353 | "movl %3, %%ebp\n\t" |
| 1354 | "movzbl 0x1, %0\n\t" |
| 1355 | "movzbl (%%ebp), %1\n\t" |
| 1356 | "popl %%ds\n\t" |
| 1357 | "popl %%ebp\n\t" |
| 1358 | : "=r" (res), "=r" (res2) |
| 1359 | : "r" (MK_SEL(1)), "r" (&tmp)); |
| 1360 | printf("DS[1] = %02x\n", res); |
| 1361 | printf("SS[tmp] = %02x\n", res2); |
| 1362 | |
| 1363 | segoff.seg = MK_SEL(2); |
| 1364 | segoff.offset = 0xabcdef12; |
| 1365 | asm volatile("lfs %2, %0\n\t" |
| 1366 | "movl %%fs, %1\n\t" |
| 1367 | : "=r" (res), "=g" (res2) |
| 1368 | : "m" (segoff)); |
| 1369 | printf("FS:reg = %04x:%08x\n", res2, res); |
| 1370 | |
| 1371 | TEST_LR("larw", "w", MK_SEL(2), 0x0100); |
| 1372 | TEST_LR("larl", "", MK_SEL(2), 0x0100); |
| 1373 | TEST_LR("lslw", "w", MK_SEL(2), 0); |
| 1374 | TEST_LR("lsll", "", MK_SEL(2), 0); |
| 1375 | |
| 1376 | TEST_LR("larw", "w", 0xfff8, 0); |
| 1377 | TEST_LR("larl", "", 0xfff8, 0); |
| 1378 | TEST_LR("lslw", "w", 0xfff8, 0); |
| 1379 | TEST_LR("lsll", "", 0xfff8, 0); |
| 1380 | |
| 1381 | TEST_ARPL("arpl", "w", 0x12345678 | 3, 0x762123c | 1); |
| 1382 | TEST_ARPL("arpl", "w", 0x12345678 | 1, 0x762123c | 3); |
| 1383 | TEST_ARPL("arpl", "w", 0x12345678 | 1, 0x762123c | 1); |
| 1384 | } |
| 1385 | |
| 1386 | /* 16 bit code test */ |
| 1387 | extern char code16_start, code16_end; |
| 1388 | extern char code16_func1; |
| 1389 | extern char code16_func2; |
| 1390 | extern char code16_func3; |
| 1391 | |
| 1392 | void test_code16(void) |
| 1393 | { |
| 1394 | struct modify_ldt_ldt_s ldt; |
| 1395 | int res, res2; |
| 1396 | |
| 1397 | /* build a code segment */ |
| 1398 | ldt.entry_number = 1; |
| 1399 | ldt.base_addr = (unsigned long)&code16_start; |
| 1400 | ldt.limit = &code16_end - &code16_start; |
| 1401 | ldt.seg_32bit = 0; |
| 1402 | ldt.contents = MODIFY_LDT_CONTENTS_CODE; |
| 1403 | ldt.read_exec_only = 0; |
| 1404 | ldt.limit_in_pages = 0; |
| 1405 | ldt.seg_not_present = 0; |
| 1406 | ldt.useable = 1; |
| 1407 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1408 | |
| 1409 | /* call the first function */ |
| 1410 | asm volatile ("lcall %1, %2" |
| 1411 | : "=a" (res) |
| 1412 | : "i" (MK_SEL(1)), "i" (&code16_func1): "memory", "cc"); |
| 1413 | printf("func1() = 0x%08x\n", res); |
| 1414 | asm volatile ("lcall %2, %3" |
| 1415 | : "=a" (res), "=c" (res2) |
| 1416 | : "i" (MK_SEL(1)), "i" (&code16_func2): "memory", "cc"); |
| 1417 | printf("func2() = 0x%08x spdec=%d\n", res, res2); |
| 1418 | asm volatile ("lcall %1, %2" |
| 1419 | : "=a" (res) |
| 1420 | : "i" (MK_SEL(1)), "i" (&code16_func3): "memory", "cc"); |
| 1421 | printf("func3() = 0x%08x\n", res); |
| 1422 | } |
| 1423 | #endif |
| 1424 | |
| 1425 | #if defined(__x86_64__) |
| 1426 | asm(".globl func_lret\n" |
| 1427 | "func_lret:\n" |
| 1428 | "movl $0x87654641, %eax\n" |
| 1429 | "lretq\n"); |
| 1430 | #else |
| 1431 | asm(".globl func_lret\n" |
| 1432 | "func_lret:\n" |
| 1433 | "movl $0x87654321, %eax\n" |
| 1434 | "lret\n" |
| 1435 | |
| 1436 | ".globl func_iret\n" |
| 1437 | "func_iret:\n" |
| 1438 | "movl $0xabcd4321, %eax\n" |
| 1439 | "iret\n"); |
| 1440 | #endif |
| 1441 | |
| 1442 | extern char func_lret; |
| 1443 | extern char func_iret; |
| 1444 | |
| 1445 | void test_misc(void) |
| 1446 | { |
| 1447 | char table[256]; |
| 1448 | long res, i; |
| 1449 | |
| 1450 | for(i=0;i<256;i++) table[i] = 256 - i; |
| 1451 | res = 0x12345678; |
| 1452 | asm ("xlat" : "=a" (res) : "b" (table), "0" (res)); |
| 1453 | printf("xlat: EAX=" FMTLX "\n", res); |
| 1454 | |
| 1455 | #if defined(__x86_64__) |
| 1456 | #if 0 |
| 1457 | { |
| 1458 | /* XXX: see if Intel Core2 and AMD64 behavior really |
| 1459 | differ. Here we implemented the Intel way which is not |
| 1460 | compatible yet with QEMU. */ |
| 1461 | static struct QEMU_PACKED { |
| 1462 | uint64_t offset; |
| 1463 | uint16_t seg; |
| 1464 | } desc; |
| 1465 | long cs_sel; |
| 1466 | |
| 1467 | asm volatile ("mov %%cs, %0" : "=r" (cs_sel)); |
| 1468 | |
| 1469 | asm volatile ("push %1\n" |
| 1470 | "call func_lret\n" |
| 1471 | : "=a" (res) |
| 1472 | : "r" (cs_sel) : "memory", "cc"); |
| 1473 | printf("func_lret=" FMTLX "\n", res); |
| 1474 | |
| 1475 | desc.offset = (long)&func_lret; |
| 1476 | desc.seg = cs_sel; |
| 1477 | |
| 1478 | asm volatile ("xor %%rax, %%rax\n" |
| 1479 | "rex64 lcall *(%%rcx)\n" |
| 1480 | : "=a" (res) |
| 1481 | : "c" (&desc) |
| 1482 | : "memory", "cc"); |
| 1483 | printf("func_lret2=" FMTLX "\n", res); |
| 1484 | |
| 1485 | asm volatile ("push %2\n" |
| 1486 | "mov $ 1f, %%rax\n" |
| 1487 | "push %%rax\n" |
| 1488 | "rex64 ljmp *(%%rcx)\n" |
| 1489 | "1:\n" |
| 1490 | : "=a" (res) |
| 1491 | : "c" (&desc), "b" (cs_sel) |
| 1492 | : "memory", "cc"); |
| 1493 | printf("func_lret3=" FMTLX "\n", res); |
| 1494 | } |
| 1495 | #endif |
| 1496 | #else |
| 1497 | asm volatile ("push %%cs ; call %1" |
| 1498 | : "=a" (res) |
| 1499 | : "m" (func_lret): "memory", "cc"); |
| 1500 | printf("func_lret=" FMTLX "\n", res); |
| 1501 | |
| 1502 | asm volatile ("pushf ; push %%cs ; call %1" |
| 1503 | : "=a" (res) |
| 1504 | : "m" (func_iret): "memory", "cc"); |
| 1505 | printf("func_iret=" FMTLX "\n", res); |
| 1506 | #endif |
| 1507 | |
| 1508 | #if defined(__x86_64__) |
| 1509 | /* specific popl test */ |
| 1510 | asm volatile ("push $12345432 ; push $0x9abcdef ; pop (%%rsp) ; pop %0" |
| 1511 | : "=g" (res)); |
| 1512 | printf("popl esp=" FMTLX "\n", res); |
| 1513 | #else |
| 1514 | /* specific popl test */ |
| 1515 | asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popl (%%esp) ; popl %0" |
| 1516 | : "=g" (res)); |
| 1517 | printf("popl esp=" FMTLX "\n", res); |
| 1518 | |
| 1519 | /* specific popw test */ |
| 1520 | asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popw (%%esp) ; addl $2, %%esp ; popl %0" |
| 1521 | : "=g" (res)); |
| 1522 | printf("popw esp=" FMTLX "\n", res); |
| 1523 | #endif |
| 1524 | } |
| 1525 | |
| 1526 | uint8_t str_buffer[4096]; |
| 1527 | |
| 1528 | #define TEST_STRING1(OP, size, DF, REP)\ |
| 1529 | {\ |
| 1530 | long esi, edi, eax, ecx, eflags;\ |
| 1531 | \ |
| 1532 | esi = (long)(str_buffer + sizeof(str_buffer) / 2);\ |
| 1533 | edi = (long)(str_buffer + sizeof(str_buffer) / 2) + 16;\ |
| 1534 | eax = i2l(0x12345678);\ |
| 1535 | ecx = 17;\ |
| 1536 | \ |
| 1537 | asm volatile ("push $0\n\t"\ |
| 1538 | "popf\n\t"\ |
| 1539 | DF "\n\t"\ |
| 1540 | REP #OP size "\n\t"\ |
| 1541 | "cld\n\t"\ |
| 1542 | "pushf\n\t"\ |
| 1543 | "pop %4\n\t"\ |
| 1544 | : "=S" (esi), "=D" (edi), "=a" (eax), "=c" (ecx), "=g" (eflags)\ |
| 1545 | : "0" (esi), "1" (edi), "2" (eax), "3" (ecx));\ |
| 1546 | printf("%-10s ESI=" FMTLX " EDI=" FMTLX " EAX=" FMTLX " ECX=" FMTLX " EFL=%04x\n",\ |
| 1547 | REP #OP size, esi, edi, eax, ecx,\ |
| 1548 | (int)(eflags & (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)));\ |
| 1549 | } |
| 1550 | |
| 1551 | #define TEST_STRING(OP, REP)\ |
| 1552 | TEST_STRING1(OP, "b", "", REP);\ |
| 1553 | TEST_STRING1(OP, "w", "", REP);\ |
| 1554 | TEST_STRING1(OP, "l", "", REP);\ |
| 1555 | X86_64_ONLY(TEST_STRING1(OP, "q", "", REP));\ |
| 1556 | TEST_STRING1(OP, "b", "std", REP);\ |
| 1557 | TEST_STRING1(OP, "w", "std", REP);\ |
| 1558 | TEST_STRING1(OP, "l", "std", REP);\ |
| 1559 | X86_64_ONLY(TEST_STRING1(OP, "q", "std", REP)) |
| 1560 | |
| 1561 | void test_string(void) |
| 1562 | { |
| 1563 | int i; |
| 1564 | for(i = 0;i < sizeof(str_buffer); i++) |
| 1565 | str_buffer[i] = i + 0x56; |
| 1566 | TEST_STRING(stos, ""); |
| 1567 | TEST_STRING(stos, "rep "); |
| 1568 | TEST_STRING(lods, ""); /* to verify stos */ |
| 1569 | TEST_STRING(lods, "rep "); |
| 1570 | TEST_STRING(movs, ""); |
| 1571 | TEST_STRING(movs, "rep "); |
| 1572 | TEST_STRING(lods, ""); /* to verify stos */ |
| 1573 | |
| 1574 | /* XXX: better tests */ |
| 1575 | TEST_STRING(scas, ""); |
| 1576 | TEST_STRING(scas, "repz "); |
| 1577 | TEST_STRING(scas, "repnz "); |
| 1578 | TEST_STRING(cmps, ""); |
| 1579 | TEST_STRING(cmps, "repz "); |
| 1580 | TEST_STRING(cmps, "repnz "); |
| 1581 | } |
| 1582 | |
| 1583 | #ifdef TEST_VM86 |
| 1584 | /* VM86 test */ |
| 1585 | |
| 1586 | static inline void set_bit(uint8_t *a, unsigned int bit) |
| 1587 | { |
| 1588 | a[bit / 8] |= (1 << (bit % 8)); |
| 1589 | } |
| 1590 | |
| 1591 | static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg) |
| 1592 | { |
| 1593 | return (uint8_t *)((seg << 4) + (reg & 0xffff)); |
| 1594 | } |
| 1595 | |
| 1596 | static inline void pushw(struct vm86_regs *r, int val) |
| 1597 | { |
| 1598 | r->esp = (r->esp & ~0xffff) | ((r->esp - 2) & 0xffff); |
| 1599 | *(uint16_t *)seg_to_linear(r->ss, r->esp) = val; |
| 1600 | } |
| 1601 | |
| 1602 | static inline int vm86(int func, struct vm86plus_struct *v86) |
| 1603 | { |
| 1604 | return syscall(__NR_vm86, func, v86); |
| 1605 | } |
| 1606 | |
| 1607 | extern char vm86_code_start; |
| 1608 | extern char vm86_code_end; |
| 1609 | |
| 1610 | #define VM86_CODE_CS 0x100 |
| 1611 | #define VM86_CODE_IP 0x100 |
| 1612 | |
| 1613 | void test_vm86(void) |
| 1614 | { |
| 1615 | struct vm86plus_struct ctx; |
| 1616 | struct vm86_regs *r; |
| 1617 | uint8_t *vm86_mem; |
| 1618 | int seg, ret; |
| 1619 | |
| 1620 | vm86_mem = mmap((void *)0x00000000, 0x110000, |
| 1621 | PROT_WRITE | PROT_READ | PROT_EXEC, |
| 1622 | MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0); |
| 1623 | if (vm86_mem == MAP_FAILED) { |
| 1624 | printf("ERROR: could not map vm86 memory"); |
| 1625 | return; |
| 1626 | } |
| 1627 | memset(&ctx, 0, sizeof(ctx)); |
| 1628 | |
| 1629 | /* init basic registers */ |
| 1630 | r = &ctx.regs; |
| 1631 | r->eip = VM86_CODE_IP; |
| 1632 | r->esp = 0xfffe; |
| 1633 | seg = VM86_CODE_CS; |
| 1634 | r->cs = seg; |
| 1635 | r->ss = seg; |
| 1636 | r->ds = seg; |
| 1637 | r->es = seg; |
| 1638 | r->fs = seg; |
| 1639 | r->gs = seg; |
| 1640 | r->eflags = VIF_MASK; |
| 1641 | |
| 1642 | /* move code to proper address. We use the same layout as a .com |
| 1643 | dos program. */ |
| 1644 | memcpy(vm86_mem + (VM86_CODE_CS << 4) + VM86_CODE_IP, |
| 1645 | &vm86_code_start, &vm86_code_end - &vm86_code_start); |
| 1646 | |
| 1647 | /* mark int 0x21 as being emulated */ |
| 1648 | set_bit((uint8_t *)&ctx.int_revectored, 0x21); |
| 1649 | |
| 1650 | for(;;) { |
| 1651 | ret = vm86(VM86_ENTER, &ctx); |
| 1652 | switch(VM86_TYPE(ret)) { |
| 1653 | case VM86_INTx: |
| 1654 | { |
| 1655 | int int_num, ah, v; |
| 1656 | |
| 1657 | int_num = VM86_ARG(ret); |
| 1658 | if (int_num != 0x21) |
| 1659 | goto unknown_int; |
| 1660 | ah = (r->eax >> 8) & 0xff; |
| 1661 | switch(ah) { |
| 1662 | case 0x00: /* exit */ |
| 1663 | goto the_end; |
| 1664 | case 0x02: /* write char */ |
| 1665 | { |
| 1666 | uint8_t c = r->edx; |
| 1667 | putchar(c); |
| 1668 | } |
| 1669 | break; |
| 1670 | case 0x09: /* write string */ |
| 1671 | { |
| 1672 | uint8_t c, *ptr; |
| 1673 | ptr = seg_to_linear(r->ds, r->edx); |
| 1674 | for(;;) { |
| 1675 | c = *ptr++; |
| 1676 | if (c == '$') |
| 1677 | break; |
| 1678 | putchar(c); |
| 1679 | } |
| 1680 | r->eax = (r->eax & ~0xff) | '$'; |
| 1681 | } |
| 1682 | break; |
| 1683 | case 0xff: /* extension: write eflags number in edx */ |
| 1684 | v = (int)r->edx; |
| 1685 | #ifndef LINUX_VM86_IOPL_FIX |
| 1686 | v &= ~0x3000; |
| 1687 | #endif |
| 1688 | printf("%08x\n", v); |
| 1689 | break; |
| 1690 | default: |
| 1691 | unknown_int: |
| 1692 | printf("unsupported int 0x%02x\n", int_num); |
| 1693 | goto the_end; |
| 1694 | } |
| 1695 | } |
| 1696 | break; |
| 1697 | case VM86_SIGNAL: |
| 1698 | /* a signal came, we just ignore that */ |
| 1699 | break; |
| 1700 | case VM86_STI: |
| 1701 | break; |
| 1702 | default: |
| 1703 | printf("ERROR: unhandled vm86 return code (0x%x)\n", ret); |
| 1704 | goto the_end; |
| 1705 | } |
| 1706 | } |
| 1707 | the_end: |
| 1708 | printf("VM86 end\n"); |
| 1709 | munmap(vm86_mem, 0x110000); |
| 1710 | } |
| 1711 | #endif |
| 1712 | |
| 1713 | /* exception tests */ |
| 1714 | #if defined(__i386__) && !defined(REG_EAX) |
| 1715 | #define REG_EAX EAX |
| 1716 | #define REG_EBX EBX |
| 1717 | #define REG_ECX ECX |
| 1718 | #define REG_EDX EDX |
| 1719 | #define REG_ESI ESI |
| 1720 | #define REG_EDI EDI |
| 1721 | #define REG_EBP EBP |
| 1722 | #define REG_ESP ESP |
| 1723 | #define REG_EIP EIP |
| 1724 | #define REG_EFL EFL |
| 1725 | #define REG_TRAPNO TRAPNO |
| 1726 | #define REG_ERR ERR |
| 1727 | #endif |
| 1728 | |
| 1729 | #if defined(__x86_64__) |
| 1730 | #define REG_EIP REG_RIP |
| 1731 | #endif |
| 1732 | |
| 1733 | jmp_buf jmp_env; |
| 1734 | int v1; |
| 1735 | int tab[2]; |
| 1736 | |
| 1737 | void sig_handler(int sig, siginfo_t *info, void *puc) |
| 1738 | { |
| 1739 | ucontext_t *uc = puc; |
| 1740 | |
| 1741 | printf("si_signo=%d si_errno=%d si_code=%d", |
| 1742 | info->si_signo, info->si_errno, info->si_code); |
| 1743 | printf(" si_addr=0x%08lx", |
| 1744 | (unsigned long)info->si_addr); |
| 1745 | printf("\n"); |
| 1746 | |
| 1747 | printf("trapno=" FMTLX " err=" FMTLX, |
| 1748 | (long)uc->uc_mcontext.gregs[REG_TRAPNO], |
| 1749 | (long)uc->uc_mcontext.gregs[REG_ERR]); |
| 1750 | printf(" EIP=" FMTLX, (long)uc->uc_mcontext.gregs[REG_EIP]); |
| 1751 | printf("\n"); |
| 1752 | longjmp(jmp_env, 1); |
| 1753 | } |
| 1754 | |
| 1755 | void test_exceptions(void) |
| 1756 | { |
| 1757 | struct sigaction act; |
| 1758 | volatile int val; |
| 1759 | |
| 1760 | act.sa_sigaction = sig_handler; |
| 1761 | sigemptyset(&act.sa_mask); |
| 1762 | act.sa_flags = SA_SIGINFO | SA_NODEFER; |
| 1763 | sigaction(SIGFPE, &act, NULL); |
| 1764 | sigaction(SIGILL, &act, NULL); |
| 1765 | sigaction(SIGSEGV, &act, NULL); |
| 1766 | sigaction(SIGBUS, &act, NULL); |
| 1767 | sigaction(SIGTRAP, &act, NULL); |
| 1768 | |
| 1769 | /* test division by zero reporting */ |
| 1770 | printf("DIVZ exception:\n"); |
| 1771 | if (setjmp(jmp_env) == 0) { |
| 1772 | /* now divide by zero */ |
| 1773 | v1 = 0; |
| 1774 | v1 = 2 / v1; |
| 1775 | } |
| 1776 | |
| 1777 | #if !defined(__x86_64__) |
| 1778 | printf("BOUND exception:\n"); |
| 1779 | if (setjmp(jmp_env) == 0) { |
| 1780 | /* bound exception */ |
| 1781 | tab[0] = 1; |
| 1782 | tab[1] = 10; |
| 1783 | asm volatile ("bound %0, %1" : : "r" (11), "m" (tab[0])); |
| 1784 | } |
| 1785 | #endif |
| 1786 | |
| 1787 | #ifdef TEST_SEGS |
| 1788 | printf("segment exceptions:\n"); |
| 1789 | if (setjmp(jmp_env) == 0) { |
| 1790 | /* load an invalid segment */ |
| 1791 | asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 1)); |
| 1792 | } |
| 1793 | if (setjmp(jmp_env) == 0) { |
| 1794 | /* null data segment is valid */ |
| 1795 | asm volatile ("movl %0, %%fs" : : "r" (3)); |
| 1796 | /* null stack segment */ |
| 1797 | asm volatile ("movl %0, %%ss" : : "r" (3)); |
| 1798 | } |
| 1799 | |
| 1800 | { |
| 1801 | struct modify_ldt_ldt_s ldt; |
| 1802 | ldt.entry_number = 1; |
| 1803 | ldt.base_addr = (unsigned long)&seg_data1; |
| 1804 | ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12; |
| 1805 | ldt.seg_32bit = 1; |
| 1806 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 1807 | ldt.read_exec_only = 0; |
| 1808 | ldt.limit_in_pages = 1; |
| 1809 | ldt.seg_not_present = 1; |
| 1810 | ldt.useable = 1; |
| 1811 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1812 | |
| 1813 | if (setjmp(jmp_env) == 0) { |
| 1814 | /* segment not present */ |
| 1815 | asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1))); |
| 1816 | } |
| 1817 | } |
| 1818 | #endif |
| 1819 | |
| 1820 | /* test SEGV reporting */ |
| 1821 | printf("PF exception:\n"); |
| 1822 | if (setjmp(jmp_env) == 0) { |
| 1823 | val = 1; |
| 1824 | /* we add a nop to test a weird PC retrieval case */ |
| 1825 | asm volatile ("nop"); |
| 1826 | /* now store in an invalid address */ |
| 1827 | *(char *)0x1234 = 1; |
| 1828 | } |
| 1829 | |
| 1830 | /* test SEGV reporting */ |
| 1831 | printf("PF exception:\n"); |
| 1832 | if (setjmp(jmp_env) == 0) { |
| 1833 | val = 1; |
| 1834 | /* read from an invalid address */ |
| 1835 | v1 = *(char *)0x1234; |
| 1836 | } |
| 1837 | |
| 1838 | /* test illegal instruction reporting */ |
| 1839 | printf("UD2 exception:\n"); |
| 1840 | if (setjmp(jmp_env) == 0) { |
| 1841 | /* now execute an invalid instruction */ |
| 1842 | asm volatile("ud2"); |
| 1843 | } |
| 1844 | printf("lock nop exception:\n"); |
| 1845 | if (setjmp(jmp_env) == 0) { |
| 1846 | /* now execute an invalid instruction */ |
| 1847 | asm volatile(".byte 0xf0, 0x90"); |
| 1848 | } |
| 1849 | |
| 1850 | printf("INT exception:\n"); |
| 1851 | if (setjmp(jmp_env) == 0) { |
| 1852 | asm volatile ("int $0xfd"); |
| 1853 | } |
| 1854 | if (setjmp(jmp_env) == 0) { |
| 1855 | asm volatile ("int $0x01"); |
| 1856 | } |
| 1857 | if (setjmp(jmp_env) == 0) { |
| 1858 | asm volatile (".byte 0xcd, 0x03"); |
| 1859 | } |
| 1860 | if (setjmp(jmp_env) == 0) { |
| 1861 | asm volatile ("int $0x04"); |
| 1862 | } |
| 1863 | if (setjmp(jmp_env) == 0) { |
| 1864 | asm volatile ("int $0x05"); |
| 1865 | } |
| 1866 | |
| 1867 | printf("INT3 exception:\n"); |
| 1868 | if (setjmp(jmp_env) == 0) { |
| 1869 | asm volatile ("int3"); |
| 1870 | } |
| 1871 | |
| 1872 | printf("CLI exception:\n"); |
| 1873 | if (setjmp(jmp_env) == 0) { |
| 1874 | asm volatile ("cli"); |
| 1875 | } |
| 1876 | |
| 1877 | printf("STI exception:\n"); |
| 1878 | if (setjmp(jmp_env) == 0) { |
| 1879 | asm volatile ("cli"); |
| 1880 | } |
| 1881 | |
| 1882 | #if !defined(__x86_64__) |
| 1883 | printf("INTO exception:\n"); |
| 1884 | if (setjmp(jmp_env) == 0) { |
| 1885 | /* overflow exception */ |
| 1886 | asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff)); |
| 1887 | } |
| 1888 | #endif |
| 1889 | |
| 1890 | printf("OUTB exception:\n"); |
| 1891 | if (setjmp(jmp_env) == 0) { |
| 1892 | asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0)); |
| 1893 | } |
| 1894 | |
| 1895 | printf("INB exception:\n"); |
| 1896 | if (setjmp(jmp_env) == 0) { |
| 1897 | asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321)); |
| 1898 | } |
| 1899 | |
| 1900 | printf("REP OUTSB exception:\n"); |
| 1901 | if (setjmp(jmp_env) == 0) { |
| 1902 | asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1)); |
| 1903 | } |
| 1904 | |
| 1905 | printf("REP INSB exception:\n"); |
| 1906 | if (setjmp(jmp_env) == 0) { |
| 1907 | asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1)); |
| 1908 | } |
| 1909 | |
| 1910 | printf("HLT exception:\n"); |
| 1911 | if (setjmp(jmp_env) == 0) { |
| 1912 | asm volatile ("hlt"); |
| 1913 | } |
| 1914 | |
| 1915 | printf("single step exception:\n"); |
| 1916 | val = 0; |
| 1917 | if (setjmp(jmp_env) == 0) { |
| 1918 | asm volatile ("pushf\n" |
| 1919 | "orl $0x00100, (%%esp)\n" |
| 1920 | "popf\n" |
| 1921 | "movl $0xabcd, %0\n" |
| 1922 | "movl $0x0, %0\n" : "=m" (val) : : "cc", "memory"); |
| 1923 | } |
| 1924 | printf("val=0x%x\n", val); |
| 1925 | } |
| 1926 | |
| 1927 | #if !defined(__x86_64__) |
| 1928 | /* specific precise single step test */ |
| 1929 | void sig_trap_handler(int sig, siginfo_t *info, void *puc) |
| 1930 | { |
| 1931 | ucontext_t *uc = puc; |
| 1932 | printf("EIP=" FMTLX "\n", (long)uc->uc_mcontext.gregs[REG_EIP]); |
| 1933 | } |
| 1934 | |
| 1935 | const uint8_t sstep_buf1[4] = { 1, 2, 3, 4}; |
| 1936 | uint8_t sstep_buf2[4]; |
| 1937 | |
| 1938 | void test_single_step(void) |
| 1939 | { |
| 1940 | struct sigaction act; |
| 1941 | volatile int val; |
| 1942 | int i; |
| 1943 | |
| 1944 | val = 0; |
| 1945 | act.sa_sigaction = sig_trap_handler; |
| 1946 | sigemptyset(&act.sa_mask); |
| 1947 | act.sa_flags = SA_SIGINFO; |
| 1948 | sigaction(SIGTRAP, &act, NULL); |
| 1949 | asm volatile ("pushf\n" |
| 1950 | "orl $0x00100, (%%esp)\n" |
| 1951 | "popf\n" |
| 1952 | "movl $0xabcd, %0\n" |
| 1953 | |
| 1954 | /* jmp test */ |
| 1955 | "movl $3, %%ecx\n" |
| 1956 | "1:\n" |
| 1957 | "addl $1, %0\n" |
| 1958 | "decl %%ecx\n" |
| 1959 | "jnz 1b\n" |
| 1960 | |
| 1961 | /* movsb: the single step should stop at each movsb iteration */ |
| 1962 | "movl $sstep_buf1, %%esi\n" |
| 1963 | "movl $sstep_buf2, %%edi\n" |
| 1964 | "movl $0, %%ecx\n" |
| 1965 | "rep movsb\n" |
| 1966 | "movl $3, %%ecx\n" |
| 1967 | "rep movsb\n" |
| 1968 | "movl $1, %%ecx\n" |
| 1969 | "rep movsb\n" |
| 1970 | |
| 1971 | /* cmpsb: the single step should stop at each cmpsb iteration */ |
| 1972 | "movl $sstep_buf1, %%esi\n" |
| 1973 | "movl $sstep_buf2, %%edi\n" |
| 1974 | "movl $0, %%ecx\n" |
| 1975 | "rep cmpsb\n" |
| 1976 | "movl $4, %%ecx\n" |
| 1977 | "rep cmpsb\n" |
| 1978 | |
| 1979 | /* getpid() syscall: single step should skip one |
| 1980 | instruction */ |
| 1981 | "movl $20, %%eax\n" |
| 1982 | "int $0x80\n" |
| 1983 | "movl $0, %%eax\n" |
| 1984 | |
| 1985 | /* when modifying SS, trace is not done on the next |
| 1986 | instruction */ |
| 1987 | "movl %%ss, %%ecx\n" |
| 1988 | "movl %%ecx, %%ss\n" |
| 1989 | "addl $1, %0\n" |
| 1990 | "movl $1, %%eax\n" |
| 1991 | "movl %%ecx, %%ss\n" |
| 1992 | "jmp 1f\n" |
| 1993 | "addl $1, %0\n" |
| 1994 | "1:\n" |
| 1995 | "movl $1, %%eax\n" |
| 1996 | "pushl %%ecx\n" |
| 1997 | "popl %%ss\n" |
| 1998 | "addl $1, %0\n" |
| 1999 | "movl $1, %%eax\n" |
| 2000 | |
| 2001 | "pushf\n" |
| 2002 | "andl $~0x00100, (%%esp)\n" |
| 2003 | "popf\n" |
| 2004 | : "=m" (val) |
| 2005 | : |
| 2006 | : "cc", "memory", "eax", "ecx", "esi", "edi"); |
| 2007 | printf("val=%d\n", val); |
| 2008 | for(i = 0; i < 4; i++) |
| 2009 | printf("sstep_buf2[%d] = %d\n", i, sstep_buf2[i]); |
| 2010 | } |
| 2011 | |
| 2012 | /* self modifying code test */ |
| 2013 | uint8_t code[] = { |
| 2014 | 0xb8, 0x1, 0x00, 0x00, 0x00, /* movl $1, %eax */ |
| 2015 | 0xc3, /* ret */ |
| 2016 | }; |
| 2017 | |
| 2018 | asm(".section \".data_x\",\"awx\"\n" |
| 2019 | "smc_code2:\n" |
| 2020 | "movl 4(%esp), %eax\n" |
| 2021 | "movl %eax, smc_patch_addr2 + 1\n" |
| 2022 | "nop\n" |
| 2023 | "nop\n" |
| 2024 | "nop\n" |
| 2025 | "nop\n" |
| 2026 | "nop\n" |
| 2027 | "nop\n" |
| 2028 | "nop\n" |
| 2029 | "nop\n" |
| 2030 | "smc_patch_addr2:\n" |
| 2031 | "movl $1, %eax\n" |
| 2032 | "ret\n" |
| 2033 | ".previous\n" |
| 2034 | ); |
| 2035 | |
| 2036 | typedef int FuncType(void); |
| 2037 | extern int smc_code2(int); |
| 2038 | void test_self_modifying_code(void) |
| 2039 | { |
| 2040 | int i; |
| 2041 | printf("self modifying code:\n"); |
| 2042 | printf("func1 = 0x%x\n", ((FuncType *)code)()); |
| 2043 | for(i = 2; i <= 4; i++) { |
| 2044 | code[1] = i; |
| 2045 | printf("func%d = 0x%x\n", i, ((FuncType *)code)()); |
| 2046 | } |
| 2047 | |
| 2048 | /* more difficult test : the modified code is just after the |
| 2049 | modifying instruction. It is forbidden in Intel specs, but it |
| 2050 | is used by old DOS programs */ |
| 2051 | for(i = 2; i <= 4; i++) { |
| 2052 | printf("smc_code2(%d) = %d\n", i, smc_code2(i)); |
| 2053 | } |
| 2054 | } |
| 2055 | #endif |
| 2056 | |
| 2057 | long enter_stack[4096]; |
| 2058 | |
| 2059 | #if defined(__x86_64__) |
| 2060 | #define RSP "%%rsp" |
| 2061 | #define RBP "%%rbp" |
| 2062 | #else |
| 2063 | #define RSP "%%esp" |
| 2064 | #define RBP "%%ebp" |
| 2065 | #endif |
| 2066 | |
| 2067 | #if !defined(__x86_64__) |
| 2068 | /* causes an infinite loop, disable it for now. */ |
| 2069 | #define TEST_ENTER(size, stack_type, level) |
| 2070 | #else |
| 2071 | #define TEST_ENTER(size, stack_type, level)\ |
| 2072 | {\ |
| 2073 | long esp_save, esp_val, ebp_val, ebp_save, i;\ |
| 2074 | stack_type *ptr, *stack_end, *stack_ptr;\ |
| 2075 | memset(enter_stack, 0, sizeof(enter_stack));\ |
| 2076 | stack_end = stack_ptr = (stack_type *)(enter_stack + 4096);\ |
| 2077 | ebp_val = (long)stack_ptr;\ |
| 2078 | for(i=1;i<=32;i++)\ |
| 2079 | *--stack_ptr = i;\ |
| 2080 | esp_val = (long)stack_ptr;\ |
| 2081 | asm("mov " RSP ", %[esp_save]\n"\ |
| 2082 | "mov " RBP ", %[ebp_save]\n"\ |
| 2083 | "mov %[esp_val], " RSP "\n"\ |
| 2084 | "mov %[ebp_val], " RBP "\n"\ |
| 2085 | "enter" size " $8, $" #level "\n"\ |
| 2086 | "mov " RSP ", %[esp_val]\n"\ |
| 2087 | "mov " RBP ", %[ebp_val]\n"\ |
| 2088 | "mov %[esp_save], " RSP "\n"\ |
| 2089 | "mov %[ebp_save], " RBP "\n"\ |
| 2090 | : [esp_save] "=r" (esp_save),\ |
| 2091 | [ebp_save] "=r" (ebp_save),\ |
| 2092 | [esp_val] "=r" (esp_val),\ |
| 2093 | [ebp_val] "=r" (ebp_val)\ |
| 2094 | : "[esp_val]" (esp_val),\ |
| 2095 | "[ebp_val]" (ebp_val));\ |
| 2096 | printf("level=%d:\n", level);\ |
| 2097 | printf("esp_val=" FMTLX "\n", esp_val - (long)stack_end);\ |
| 2098 | printf("ebp_val=" FMTLX "\n", ebp_val - (long)stack_end);\ |
| 2099 | for(ptr = (stack_type *)esp_val; ptr < stack_end; ptr++)\ |
| 2100 | printf(FMTLX "\n", (long)ptr[0]);\ |
| 2101 | } |
| 2102 | #endif |
| 2103 | |
| 2104 | static void test_enter(void) |
| 2105 | { |
| 2106 | #if defined(__x86_64__) |
| 2107 | TEST_ENTER("q", uint64_t, 0); |
| 2108 | TEST_ENTER("q", uint64_t, 1); |
| 2109 | TEST_ENTER("q", uint64_t, 2); |
| 2110 | TEST_ENTER("q", uint64_t, 31); |
| 2111 | #else |
| 2112 | TEST_ENTER("l", uint32_t, 0); |
| 2113 | TEST_ENTER("l", uint32_t, 1); |
| 2114 | TEST_ENTER("l", uint32_t, 2); |
| 2115 | TEST_ENTER("l", uint32_t, 31); |
| 2116 | #endif |
| 2117 | |
| 2118 | TEST_ENTER("w", uint16_t, 0); |
| 2119 | TEST_ENTER("w", uint16_t, 1); |
| 2120 | TEST_ENTER("w", uint16_t, 2); |
| 2121 | TEST_ENTER("w", uint16_t, 31); |
| 2122 | } |
| 2123 | |
| 2124 | #define TEST_CONV_RAX(op)\ |
| 2125 | {\ |
| 2126 | unsigned long a, r;\ |
| 2127 | a = i2l(0x8234a6f8);\ |
| 2128 | r = a;\ |
| 2129 | asm volatile(#op : "=a" (r) : "0" (r));\ |
| 2130 | printf("%-10s A=" FMTLX " R=" FMTLX "\n", #op, a, r);\ |
| 2131 | } |
| 2132 | |
| 2133 | #define TEST_CONV_RAX_RDX(op)\ |
| 2134 | {\ |
| 2135 | unsigned long a, d, r, rh; \ |
| 2136 | a = i2l(0x8234a6f8);\ |
| 2137 | d = i2l(0x8345a1f2);\ |
| 2138 | r = a;\ |
| 2139 | rh = d;\ |
| 2140 | asm volatile(#op : "=a" (r), "=d" (rh) : "0" (r), "1" (rh)); \ |
| 2141 | printf("%-10s A=" FMTLX " R=" FMTLX ":" FMTLX "\n", #op, a, r, rh); \ |
| 2142 | } |
| 2143 | |
| 2144 | void test_conv(void) |
| 2145 | { |
| 2146 | TEST_CONV_RAX(cbw); |
| 2147 | TEST_CONV_RAX(cwde); |
| 2148 | #if defined(__x86_64__) |
| 2149 | TEST_CONV_RAX(cdqe); |
| 2150 | #endif |
| 2151 | |
| 2152 | TEST_CONV_RAX_RDX(cwd); |
| 2153 | TEST_CONV_RAX_RDX(cdq); |
| 2154 | #if defined(__x86_64__) |
| 2155 | TEST_CONV_RAX_RDX(cqo); |
| 2156 | #endif |
| 2157 | |
| 2158 | { |
| 2159 | unsigned long a, r; |
| 2160 | a = i2l(0x12345678); |
| 2161 | asm volatile("bswapl %k0" : "=r" (r) : "0" (a)); |
| 2162 | printf("%-10s: A=" FMTLX " R=" FMTLX "\n", "bswapl", a, r); |
| 2163 | } |
| 2164 | #if defined(__x86_64__) |
| 2165 | { |
| 2166 | unsigned long a, r; |
| 2167 | a = i2l(0x12345678); |
| 2168 | asm volatile("bswapq %0" : "=r" (r) : "0" (a)); |
| 2169 | printf("%-10s: A=" FMTLX " R=" FMTLX "\n", "bswapq", a, r); |
| 2170 | } |
| 2171 | #endif |
| 2172 | } |
| 2173 | |
| 2174 | extern void *__start_initcall; |
| 2175 | extern void *__stop_initcall; |
| 2176 | |
| 2177 | |
| 2178 | int main(int argc, char **argv) |
| 2179 | { |
| 2180 | void **ptr; |
| 2181 | void (*func)(void); |
| 2182 | |
| 2183 | ptr = &__start_initcall; |
| 2184 | while (ptr != &__stop_initcall) { |
| 2185 | func = *ptr++; |
| 2186 | func(); |
| 2187 | } |
| 2188 | test_bsx(); |
| 2189 | test_xcnt(); |
| 2190 | test_mul(); |
| 2191 | test_jcc(); |
| 2192 | test_loop(); |
| 2193 | test_floats(); |
| 2194 | #if !defined(__x86_64__) |
| 2195 | test_bcd(); |
| 2196 | #endif |
| 2197 | test_xchg(); |
| 2198 | test_string(); |
| 2199 | test_misc(); |
| 2200 | test_lea(); |
| 2201 | #ifdef TEST_SEGS |
| 2202 | test_segs(); |
| 2203 | test_code16(); |
| 2204 | #endif |
| 2205 | #ifdef TEST_VM86 |
| 2206 | test_vm86(); |
| 2207 | #endif |
| 2208 | #if !defined(__x86_64__) |
| 2209 | test_exceptions(); |
| 2210 | test_self_modifying_code(); |
| 2211 | test_single_step(); |
| 2212 | #endif |
| 2213 | test_enter(); |
| 2214 | test_conv(); |
| 2215 | return 0; |
| 2216 | } |