test-i386.c 43.2 KB
Newer Older
B
license  
bellard 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
/*
 *  x86 CPU test
 * 
 *  Copyright (c) 2003 Fabrice Bellard
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
20
#define _GNU_SOURCE
B
bellard 已提交
21 22
#include <stdlib.h>
#include <stdio.h>
B
bellard 已提交
23
#include <string.h>
B
bellard 已提交
24
#include <inttypes.h>
B
bellard 已提交
25
#include <math.h>
26 27
#include <signal.h>
#include <setjmp.h>
B
bellard 已提交
28
#include <errno.h>
29 30 31
#include <sys/ucontext.h>
#include <sys/mman.h>
#include <asm/vm86.h>
B
bellard 已提交
32

B
bellard 已提交
33 34
#define TEST_CMOV  0
#define TEST_FCOMI 0
35
//#define LINUX_VM86_IOPL_FIX
36
//#define TEST_P4_FLAGS
B
bellard 已提交
37

B
bellard 已提交
38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
#define xglue(x, y) x ## y
#define glue(x, y) xglue(x, y)
#define stringify(s)	tostring(s)
#define tostring(s)	#s

#define CC_C   	0x0001
#define CC_P 	0x0004
#define CC_A	0x0010
#define CC_Z	0x0040
#define CC_S    0x0080
#define CC_O    0x0800

#define __init_call	__attribute__ ((unused,__section__ (".initcall.init")))

static void *call_start __init_call = NULL;

B
bellard 已提交
54 55
#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)

B
bellard 已提交
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
#define OP add
#include "test-i386.h"

#define OP sub
#include "test-i386.h"

#define OP xor
#include "test-i386.h"

#define OP and
#include "test-i386.h"

#define OP or
#include "test-i386.h"

#define OP cmp
#include "test-i386.h"

#define OP adc
#define OP_CC
#include "test-i386.h"

#define OP sbb
#define OP_CC
#include "test-i386.h"

#define OP inc
#define OP_CC
#define OP1
#include "test-i386.h"

#define OP dec
#define OP_CC
#define OP1
#include "test-i386.h"

#define OP neg
#define OP_CC
#define OP1
#include "test-i386.h"

#define OP not
#define OP_CC
#define OP1
#include "test-i386.h"

B
bellard 已提交
102 103 104
#undef CC_MASK
#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O)

B
bellard 已提交
105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
#define OP shl
#include "test-i386-shift.h"

#define OP shr
#include "test-i386-shift.h"

#define OP sar
#include "test-i386-shift.h"

#define OP rol
#include "test-i386-shift.h"

#define OP ror
#include "test-i386-shift.h"

#define OP rcr
#define OP_CC
#include "test-i386-shift.h"

#define OP rcl
#define OP_CC
#include "test-i386-shift.h"

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
#define OP shld
#define OP_SHIFTD
#define OP_NOBYTE
#include "test-i386-shift.h"

#define OP shrd
#define OP_SHIFTD
#define OP_NOBYTE
#include "test-i386-shift.h"

/* XXX: should be more precise ? */
#undef CC_MASK
#define CC_MASK (CC_C)

#define OP bt
#define OP_NOBYTE
#include "test-i386-shift.h"

#define OP bts
#define OP_NOBYTE
#include "test-i386-shift.h"

#define OP btr
#define OP_NOBYTE
#include "test-i386-shift.h"

#define OP btc
#define OP_NOBYTE
#include "test-i386-shift.h"
B
bellard 已提交
157

B
bellard 已提交
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
/* lea test (modrm support) */
#define TEST_LEA(STR)\
{\
    asm("leal " STR ", %0"\
        : "=r" (res)\
        : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\
    printf("lea %s = %08x\n", STR, res);\
}

#define TEST_LEA16(STR)\
{\
    asm(".code16 ; .byte 0x67 ; leal " STR ", %0 ; .code32"\
        : "=wq" (res)\
        : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\
    printf("lea %s = %08x\n", STR, res);\
}


void test_lea(void)
{
    int eax, ebx, ecx, edx, esi, edi, res;
    eax = 0x0001;
    ebx = 0x0002;
    ecx = 0x0004;
    edx = 0x0008;
    esi = 0x0010;
    edi = 0x0020;

    TEST_LEA("0x4000");

    TEST_LEA("(%%eax)");
    TEST_LEA("(%%ebx)");
    TEST_LEA("(%%ecx)");
    TEST_LEA("(%%edx)");
    TEST_LEA("(%%esi)");
    TEST_LEA("(%%edi)");

    TEST_LEA("0x40(%%eax)");
    TEST_LEA("0x40(%%ebx)");
    TEST_LEA("0x40(%%ecx)");
    TEST_LEA("0x40(%%edx)");
    TEST_LEA("0x40(%%esi)");
    TEST_LEA("0x40(%%edi)");

    TEST_LEA("0x4000(%%eax)");
    TEST_LEA("0x4000(%%ebx)");
    TEST_LEA("0x4000(%%ecx)");
    TEST_LEA("0x4000(%%edx)");
    TEST_LEA("0x4000(%%esi)");
    TEST_LEA("0x4000(%%edi)");

    TEST_LEA("(%%eax, %%ecx)");
    TEST_LEA("(%%ebx, %%edx)");
    TEST_LEA("(%%ecx, %%ecx)");
    TEST_LEA("(%%edx, %%ecx)");
    TEST_LEA("(%%esi, %%ecx)");
    TEST_LEA("(%%edi, %%ecx)");

    TEST_LEA("0x40(%%eax, %%ecx)");
    TEST_LEA("0x4000(%%ebx, %%edx)");

    TEST_LEA("(%%ecx, %%ecx, 2)");
    TEST_LEA("(%%edx, %%ecx, 4)");
    TEST_LEA("(%%esi, %%ecx, 8)");

    TEST_LEA("(,%%eax, 2)");
    TEST_LEA("(,%%ebx, 4)");
    TEST_LEA("(,%%ecx, 8)");

    TEST_LEA("0x40(,%%eax, 2)");
    TEST_LEA("0x40(,%%ebx, 4)");
    TEST_LEA("0x40(,%%ecx, 8)");


    TEST_LEA("-10(%%ecx, %%ecx, 2)");
    TEST_LEA("-10(%%edx, %%ecx, 4)");
    TEST_LEA("-10(%%esi, %%ecx, 8)");

    TEST_LEA("0x4000(%%ecx, %%ecx, 2)");
    TEST_LEA("0x4000(%%edx, %%ecx, 4)");
    TEST_LEA("0x4000(%%esi, %%ecx, 8)");

    /* limited 16 bit addressing test */
    TEST_LEA16("0x4000");
    TEST_LEA16("(%%bx)");
    TEST_LEA16("(%%si)");
    TEST_LEA16("(%%di)");
    TEST_LEA16("0x40(%%bx)");
    TEST_LEA16("0x40(%%si)");
    TEST_LEA16("0x40(%%di)");
    TEST_LEA16("0x4000(%%bx)");
    TEST_LEA16("0x4000(%%si)");
    TEST_LEA16("(%%bx,%%si)");
    TEST_LEA16("(%%bx,%%di)");
    TEST_LEA16("0x40(%%bx,%%si)");
    TEST_LEA16("0x40(%%bx,%%di)");
    TEST_LEA16("0x4000(%%bx,%%si)");
    TEST_LEA16("0x4000(%%bx,%%di)");
}

#define TEST_JCC(JCC, v1, v2)\
{\
B
bellard 已提交
260
    int res;\
B
bellard 已提交
261 262
    asm("movl $1, %0\n\t"\
        "cmpl %2, %1\n\t"\
B
bellard 已提交
263
        "j" JCC " 1f\n\t"\
B
bellard 已提交
264 265 266 267
        "movl $0, %0\n\t"\
        "1:\n\t"\
        : "=r" (res)\
        : "r" (v1), "r" (v2));\
B
bellard 已提交
268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289
    printf("%-10s %d\n", "j" JCC, res);\
\
    asm("movl $0, %0\n\t"\
        "cmpl %2, %1\n\t"\
        "set" JCC " %b0\n\t"\
        : "=r" (res)\
        : "r" (v1), "r" (v2));\
    printf("%-10s %d\n", "set" JCC, res);\
 if (TEST_CMOV) {\
    asm("movl $0x12345678, %0\n\t"\
        "cmpl %2, %1\n\t"\
        "cmov" JCC "l %3, %0\n\t"\
        : "=r" (res)\
        : "r" (v1), "r" (v2), "m" (1));\
        printf("%-10s R=0x%08x\n", "cmov" JCC "l", res);\
    asm("movl $0x12345678, %0\n\t"\
        "cmpl %2, %1\n\t"\
        "cmov" JCC "w %w3, %w0\n\t"\
        : "=r" (res)\
        : "r" (v1), "r" (v2), "r" (1));\
        printf("%-10s R=0x%08x\n", "cmov" JCC "w", res);\
 } \
B
bellard 已提交
290 291 292 293 294
}

/* various jump tests */
void test_jcc(void)
{
B
bellard 已提交
295 296
    TEST_JCC("ne", 1, 1);
    TEST_JCC("ne", 1, 0);
B
bellard 已提交
297

B
bellard 已提交
298 299
    TEST_JCC("e", 1, 1);
    TEST_JCC("e", 1, 0);
B
bellard 已提交
300

B
bellard 已提交
301 302 303
    TEST_JCC("l", 1, 1);
    TEST_JCC("l", 1, 0);
    TEST_JCC("l", 1, -1);
B
bellard 已提交
304

B
bellard 已提交
305 306 307
    TEST_JCC("le", 1, 1);
    TEST_JCC("le", 1, 0);
    TEST_JCC("le", 1, -1);
B
bellard 已提交
308

B
bellard 已提交
309 310 311
    TEST_JCC("ge", 1, 1);
    TEST_JCC("ge", 1, 0);
    TEST_JCC("ge", -1, 1);
B
bellard 已提交
312

B
bellard 已提交
313 314 315
    TEST_JCC("g", 1, 1);
    TEST_JCC("g", 1, 0);
    TEST_JCC("g", 1, -1);
B
bellard 已提交
316

B
bellard 已提交
317 318 319
    TEST_JCC("b", 1, 1);
    TEST_JCC("b", 1, 0);
    TEST_JCC("b", 1, -1);
B
bellard 已提交
320

B
bellard 已提交
321 322 323
    TEST_JCC("be", 1, 1);
    TEST_JCC("be", 1, 0);
    TEST_JCC("be", 1, -1);
B
bellard 已提交
324

B
bellard 已提交
325 326 327
    TEST_JCC("ae", 1, 1);
    TEST_JCC("ae", 1, 0);
    TEST_JCC("ae", 1, -1);
B
bellard 已提交
328

B
bellard 已提交
329 330 331
    TEST_JCC("a", 1, 1);
    TEST_JCC("a", 1, 0);
    TEST_JCC("a", 1, -1);
B
bellard 已提交
332 333


B
bellard 已提交
334 335
    TEST_JCC("p", 1, 1);
    TEST_JCC("p", 1, 0);
B
bellard 已提交
336

B
bellard 已提交
337 338
    TEST_JCC("np", 1, 1);
    TEST_JCC("np", 1, 0);
B
bellard 已提交
339

B
bellard 已提交
340 341
    TEST_JCC("o", 0x7fffffff, 0);
    TEST_JCC("o", 0x7fffffff, -1);
B
bellard 已提交
342

B
bellard 已提交
343 344
    TEST_JCC("no", 0x7fffffff, 0);
    TEST_JCC("no", 0x7fffffff, -1);
B
bellard 已提交
345

B
bellard 已提交
346 347 348
    TEST_JCC("s", 0, 1);
    TEST_JCC("s", 0, -1);
    TEST_JCC("s", 0, 0);
B
bellard 已提交
349

B
bellard 已提交
350 351 352
    TEST_JCC("ns", 0, 1);
    TEST_JCC("ns", 0, -1);
    TEST_JCC("ns", 0, 0);
B
bellard 已提交
353 354
}

B
bellard 已提交
355
#undef CC_MASK
356 357 358
#ifdef TEST_P4_FLAGS
#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)
#else
B
bellard 已提交
359
#define CC_MASK (CC_O | CC_C)
360
#endif
B
bellard 已提交
361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403

#define OP mul
#include "test-i386-muldiv.h"

#define OP imul
#include "test-i386-muldiv.h"

void test_imulw2(int op0, int op1) 
{
    int res, s1, s0, flags;
    s0 = op0;
    s1 = op1;
    res = s0;
    flags = 0;
    asm ("push %4\n\t"
         "popf\n\t"
         "imulw %w2, %w0\n\t" 
         "pushf\n\t"
         "popl %1\n\t"
         : "=q" (res), "=g" (flags)
         : "q" (s1), "0" (res), "1" (flags));
    printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",
           "imulw", s0, s1, res, flags & CC_MASK);
}

void test_imull2(int op0, int op1) 
{
    int res, s1, s0, flags;
    s0 = op0;
    s1 = op1;
    res = s0;
    flags = 0;
    asm ("push %4\n\t"
         "popf\n\t"
         "imull %2, %0\n\t" 
         "pushf\n\t"
         "popl %1\n\t"
         : "=q" (res), "=g" (flags)
         : "q" (s1), "0" (res), "1" (flags));
    printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",
           "imull", s0, s1, res, flags & CC_MASK);
}

B
bellard 已提交
404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420
#define TEST_IMUL_IM(size, size1, op0, op1)\
{\
    int res, flags;\
    flags = 0;\
    res = 0;\
    asm ("push %3\n\t"\
         "popf\n\t"\
         "imul" size " $" #op0 ", %" size1 "2, %" size1 "0\n\t" \
         "pushf\n\t"\
         "popl %1\n\t"\
         : "=r" (res), "=g" (flags)\
         : "r" (op1), "1" (flags), "0" (res));\
    printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",\
           "imul" size, op0, op1, res, flags & CC_MASK);\
}


421 422 423 424 425 426 427 428 429
#undef CC_MASK
#define CC_MASK (0)

#define OP div
#include "test-i386-muldiv.h"

#define OP idiv
#include "test-i386-muldiv.h"

B
bellard 已提交
430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471
void test_mul(void)
{
    test_imulb(0x1234561d, 4);
    test_imulb(3, -4);
    test_imulb(0x80, 0x80);
    test_imulb(0x10, 0x10);

    test_imulw(0, 0x1234001d, 45);
    test_imulw(0, 23, -45);
    test_imulw(0, 0x8000, 0x8000);
    test_imulw(0, 0x100, 0x100);

    test_imull(0, 0x1234001d, 45);
    test_imull(0, 23, -45);
    test_imull(0, 0x80000000, 0x80000000);
    test_imull(0, 0x10000, 0x10000);

    test_mulb(0x1234561d, 4);
    test_mulb(3, -4);
    test_mulb(0x80, 0x80);
    test_mulb(0x10, 0x10);

    test_mulw(0, 0x1234001d, 45);
    test_mulw(0, 23, -45);
    test_mulw(0, 0x8000, 0x8000);
    test_mulw(0, 0x100, 0x100);

    test_mull(0, 0x1234001d, 45);
    test_mull(0, 23, -45);
    test_mull(0, 0x80000000, 0x80000000);
    test_mull(0, 0x10000, 0x10000);

    test_imulw2(0x1234001d, 45);
    test_imulw2(23, -45);
    test_imulw2(0x8000, 0x8000);
    test_imulw2(0x100, 0x100);

    test_imull2(0x1234001d, 45);
    test_imull2(23, -45);
    test_imull2(0x80000000, 0x80000000);
    test_imull2(0x10000, 0x10000);

B
bellard 已提交
472 473 474 475 476 477 478 479 480 481
    TEST_IMUL_IM("w", "w", 45, 0x1234);
    TEST_IMUL_IM("w", "w", -45, 23);
    TEST_IMUL_IM("w", "w", 0x8000, 0x80000000);
    TEST_IMUL_IM("w", "w", 0x7fff, 0x1000);

    TEST_IMUL_IM("l", "", 45, 0x1234);
    TEST_IMUL_IM("l", "", -45, 23);
    TEST_IMUL_IM("l", "", 0x8000, 0x80000000);
    TEST_IMUL_IM("l", "", 0x7fff, 0x1000);

B
bellard 已提交
482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510
    test_idivb(0x12341678, 0x127e);
    test_idivb(0x43210123, -5);
    test_idivb(0x12340004, -1);

    test_idivw(0, 0x12345678, 12347);
    test_idivw(0, -23223, -45);
    test_idivw(0, 0x12348000, -1);
    test_idivw(0x12343, 0x12345678, 0x81238567);

    test_idivl(0, 0x12345678, 12347);
    test_idivl(0, -233223, -45);
    test_idivl(0, 0x80000000, -1);
    test_idivl(0x12343, 0x12345678, 0x81234567);

    test_divb(0x12341678, 0x127e);
    test_divb(0x43210123, -5);
    test_divb(0x12340004, -1);

    test_divw(0, 0x12345678, 12347);
    test_divw(0, -23223, -45);
    test_divw(0, 0x12348000, -1);
    test_divw(0x12343, 0x12345678, 0x81238567);

    test_divl(0, 0x12345678, 12347);
    test_divl(0, -233223, -45);
    test_divl(0, 0x80000000, -1);
    test_divl(0x12343, 0x12345678, 0x81234567);
}

B
bellard 已提交
511 512 513 514
#define TEST_BSX(op, size, op0)\
{\
    int res, val, resz;\
    val = op0;\
B
bellard 已提交
515 516 517
    asm("xorl %1, %1\n"\
        "movl $0x12345678, %0\n"\
        #op " %" size "2, %" size "0 ; setz %b1" \
B
bellard 已提交
518 519
        : "=r" (res), "=q" (resz)\
        : "g" (val));\
B
bellard 已提交
520
    printf("%-10s A=%08x R=%08x %d\n", #op, val, res, resz);\
B
bellard 已提交
521 522 523 524 525 526 527 528 529 530 531 532 533 534
}

void test_bsx(void)
{
    TEST_BSX(bsrw, "w", 0);
    TEST_BSX(bsrw, "w", 0x12340128);
    TEST_BSX(bsrl, "", 0);
    TEST_BSX(bsrl, "", 0x00340128);
    TEST_BSX(bsfw, "w", 0);
    TEST_BSX(bsfw, "w", 0x12340128);
    TEST_BSX(bsfl, "", 0);
    TEST_BSX(bsfl, "", 0x00340128);
}

B
bellard 已提交
535 536
/**********************************************/

B
bellard 已提交
537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569
void test_fops(double a, double b)
{
    printf("a=%f b=%f a+b=%f\n", a, b, a + b);
    printf("a=%f b=%f a-b=%f\n", a, b, a - b);
    printf("a=%f b=%f a*b=%f\n", a, b, a * b);
    printf("a=%f b=%f a/b=%f\n", a, b, a / b);
    printf("a=%f b=%f fmod(a, b)=%f\n", a, b, fmod(a, b));
    printf("a=%f sqrt(a)=%f\n", a, sqrt(a));
    printf("a=%f sin(a)=%f\n", a, sin(a));
    printf("a=%f cos(a)=%f\n", a, cos(a));
    printf("a=%f tan(a)=%f\n", a, tan(a));
    printf("a=%f log(a)=%f\n", a, log(a));
    printf("a=%f exp(a)=%f\n", a, exp(a));
    printf("a=%f b=%f atan2(a, b)=%f\n", a, b, atan2(a, b));
    /* just to test some op combining */
    printf("a=%f asin(sin(a))=%f\n", a, asin(sin(a)));
    printf("a=%f acos(cos(a))=%f\n", a, acos(cos(a)));
    printf("a=%f atan(tan(a))=%f\n", a, atan(tan(a)));

}

void test_fcmp(double a, double b)
{
    printf("(%f<%f)=%d\n",
           a, b, a < b);
    printf("(%f<=%f)=%d\n",
           a, b, a <= b);
    printf("(%f==%f)=%d\n",
           a, b, a == b);
    printf("(%f>%f)=%d\n",
           a, b, a > b);
    printf("(%f<=%f)=%d\n",
           a, b, a >= b);
B
bellard 已提交
570 571 572 573 574 575 576 577 578 579
    if (TEST_FCOMI) {
        unsigned int eflags;
        /* test f(u)comi instruction */
        asm("fcomi %2, %1\n"
            "pushf\n"
            "pop %0\n"
            : "=r" (eflags)
            : "t" (a), "u" (b));
        printf("fcomi(%f %f)=%08x\n", a, b, eflags & (CC_Z | CC_P | CC_C));
    }
B
bellard 已提交
580 581 582 583 584 585
}

void test_fcvt(double a)
{
    float fa;
    long double la;
B
bellard 已提交
586 587 588 589 590 591
    int16_t fpuc;
    int i;
    int64_t lla;
    int ia;
    int16_t wa;
    double ra;
B
bellard 已提交
592 593 594 595 596

    fa = a;
    la = a;
    printf("(float)%f = %f\n", a, fa);
    printf("(long double)%f = %Lf\n", a, la);
B
bellard 已提交
597 598 599
    printf("a=%016Lx\n", *(long long *)&a);
    printf("la=%016Lx %04x\n", *(long long *)&la, 
           *(unsigned short *)((char *)(&la) + 8));
B
bellard 已提交
600 601 602 603 604 605 606 607 608 609 610 611 612 613 614

    /* test all roundings */
    asm volatile ("fstcw %0" : "=m" (fpuc));
    for(i=0;i<4;i++) {
        asm volatile ("fldcw %0" : : "m" ((fpuc & ~0x0c00) | (i << 10)));
        asm volatile ("fist %0" : "=m" (wa) : "t" (a));
        asm volatile ("fistl %0" : "=m" (ia) : "t" (a));
        asm volatile ("fistpll %0" : "=m" (lla) : "t" (a) : "st");
        asm volatile ("frndint ; fstl %0" : "=m" (ra) : "t" (a));
        asm volatile ("fldcw %0" : : "m" (fpuc));
        printf("(short)a = %d\n", wa);
        printf("(int)a = %d\n", ia);
        printf("(int64_t)a = %Ld\n", lla);
        printf("rint(a) = %f\n", ra);
    }
B
bellard 已提交
615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632
}

#define TEST(N) \
    asm("fld" #N : "=t" (a)); \
    printf("fld" #N "= %f\n", a);

void test_fconst(void)
{
    double a;
    TEST(1);
    TEST(l2t);
    TEST(l2e);
    TEST(pi);
    TEST(lg2);
    TEST(ln2);
    TEST(z);
}

B
bellard 已提交
633 634 635 636 637 638 639 640 641 642 643
void test_fbcd(double a)
{
    unsigned short bcd[5];
    double b;

    asm("fbstp %0" : "=m" (bcd[0]) : "t" (a) : "st");
    asm("fbld %1" : "=t" (b) : "m" (bcd[0]));
    printf("a=%f bcd=%04x%04x%04x%04x%04x b=%f\n", 
           a, bcd[4], bcd[3], bcd[2], bcd[1], bcd[0], b);
}

B
bellard 已提交
644
#define TEST_ENV(env, save, restore)\
B
bellard 已提交
645 646
{\
    memset((env), 0xaa, sizeof(*(env)));\
B
bellard 已提交
647 648 649 650 651 652 653 654
    for(i=0;i<5;i++)\
        asm volatile ("fldl %0" : : "m" (dtab[i]));\
    asm(save " %0\n" : : "m" (*(env)));\
    asm(restore " %0\n": : "m" (*(env)));\
    for(i=0;i<5;i++)\
        asm volatile ("fstpl %0" : "=m" (rtab[i]));\
    for(i=0;i<5;i++)\
        printf("res[%d]=%f\n", i, rtab[i]);\
B
bellard 已提交
655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679
    printf("fpuc=%04x fpus=%04x fptag=%04x\n",\
           (env)->fpuc,\
           (env)->fpus & 0xff00,\
           (env)->fptag);\
}

void test_fenv(void)
{
    struct __attribute__((packed)) {
        uint16_t fpuc;
        uint16_t dummy1;
        uint16_t fpus;
        uint16_t dummy2;
        uint16_t fptag;
        uint16_t dummy3;
        uint32_t ignored[4];
        long double fpregs[8];
    } float_env32;
    struct __attribute__((packed)) {
        uint16_t fpuc;
        uint16_t fpus;
        uint16_t fptag;
        uint16_t ignored[4];
        long double fpregs[8];
    } float_env16;
B
bellard 已提交
680 681 682 683 684 685
    double dtab[8];
    double rtab[8];
    int i;

    for(i=0;i<8;i++)
        dtab[i] = i + 1;
B
bellard 已提交
686

B
bellard 已提交
687 688 689 690
    TEST_ENV(&float_env16, "data16 fnstenv", "data16 fldenv");
    TEST_ENV(&float_env16, "data16 fnsave", "data16 frstor");
    TEST_ENV(&float_env32, "fnstenv", "fldenv");
    TEST_ENV(&float_env32, "fnsave", "frstor");
B
bellard 已提交
691 692 693 694 695 696 697 698

    /* test for ffree */
    for(i=0;i<5;i++)
        asm volatile ("fldl %0" : : "m" (dtab[i]));
    asm volatile("ffree %st(2)");
    asm volatile ("fnstenv %0\n" : : "m" (float_env32));
    asm volatile ("fninit");
    printf("fptag=%04x\n", float_env32.fptag);
B
bellard 已提交
699 700
}

B
bellard 已提交
701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734

#define TEST_FCMOV(a, b, eflags, CC)\
{\
    double res;\
    asm("push %3\n"\
        "popf\n"\
        "fcmov" CC " %2, %0\n"\
        : "=t" (res)\
        : "0" (a), "u" (b), "g" (eflags));\
    printf("fcmov%s eflags=0x%04x-> %f\n", \
           CC, eflags, res);\
}

void test_fcmov(void)
{
    double a, b;
    int eflags, i;

    a = 1.0;
    b = 2.0;
    for(i = 0; i < 4; i++) {
        eflags = 0;
        if (i & 1)
            eflags |= CC_C;
        if (i & 2)
            eflags |= CC_Z;
        TEST_FCMOV(a, b, eflags, "b");
        TEST_FCMOV(a, b, eflags, "e");
        TEST_FCMOV(a, b, eflags, "be");
        TEST_FCMOV(a, b, eflags, "nb");
        TEST_FCMOV(a, b, eflags, "ne");
        TEST_FCMOV(a, b, eflags, "nbe");
    }
    TEST_FCMOV(a, b, 0, "u");
B
bellard 已提交
735 736
    TEST_FCMOV(a, b, CC_P, "u");
    TEST_FCMOV(a, b, 0, "nu");
B
bellard 已提交
737 738 739
    TEST_FCMOV(a, b, CC_P, "nu");
}

B
bellard 已提交
740 741 742 743 744 745 746
void test_floats(void)
{
    test_fops(2, 3);
    test_fops(1.4, -5);
    test_fcmp(2, -1);
    test_fcmp(2, 2);
    test_fcmp(2, 3);
B
bellard 已提交
747 748
    test_fcvt(0.5);
    test_fcvt(-0.5);
B
bellard 已提交
749 750
    test_fcvt(1.0/7.0);
    test_fcvt(-1.0/9.0);
B
bellard 已提交
751 752
    test_fcvt(32768);
    test_fcvt(-1e20);
B
bellard 已提交
753
    test_fconst();
B
bellard 已提交
754 755
    test_fbcd(1234567890123456);
    test_fbcd(-123451234567890);
B
bellard 已提交
756
    test_fenv();
B
bellard 已提交
757 758 759
    if (TEST_CMOV) {
        test_fcmov();
    }
B
bellard 已提交
760
}
B
bellard 已提交
761

B
bellard 已提交
762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831
/**********************************************/

#define TEST_BCD(op, op0, cc_in, cc_mask)\
{\
    int res, flags;\
    res = op0;\
    flags = cc_in;\
    asm ("push %3\n\t"\
         "popf\n\t"\
         #op "\n\t"\
         "pushf\n\t"\
         "popl %1\n\t"\
        : "=a" (res), "=g" (flags)\
        : "0" (res), "1" (flags));\
    printf("%-10s A=%08x R=%08x CCIN=%04x CC=%04x\n",\
           #op, op0, res, cc_in, flags & cc_mask);\
}

void test_bcd(void)
{
    TEST_BCD(daa, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(daa, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(das, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
    TEST_BCD(das, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));

    TEST_BCD(aaa, 0x12340205, CC_A, (CC_C | CC_A));
    TEST_BCD(aaa, 0x12340306, CC_A, (CC_C | CC_A));
    TEST_BCD(aaa, 0x1234040a, CC_A, (CC_C | CC_A));
    TEST_BCD(aaa, 0x123405fa, CC_A, (CC_C | CC_A));
    TEST_BCD(aaa, 0x12340205, 0, (CC_C | CC_A));
    TEST_BCD(aaa, 0x12340306, 0, (CC_C | CC_A));
    TEST_BCD(aaa, 0x1234040a, 0, (CC_C | CC_A));
    TEST_BCD(aaa, 0x123405fa, 0, (CC_C | CC_A));
    
    TEST_BCD(aas, 0x12340205, CC_A, (CC_C | CC_A));
    TEST_BCD(aas, 0x12340306, CC_A, (CC_C | CC_A));
    TEST_BCD(aas, 0x1234040a, CC_A, (CC_C | CC_A));
    TEST_BCD(aas, 0x123405fa, CC_A, (CC_C | CC_A));
    TEST_BCD(aas, 0x12340205, 0, (CC_C | CC_A));
    TEST_BCD(aas, 0x12340306, 0, (CC_C | CC_A));
    TEST_BCD(aas, 0x1234040a, 0, (CC_C | CC_A));
    TEST_BCD(aas, 0x123405fa, 0, (CC_C | CC_A));

    TEST_BCD(aam, 0x12340547, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));
    TEST_BCD(aad, 0x12340407, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));
}

B
bellard 已提交
832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869
#define TEST_XCHG(op, size, opconst)\
{\
    int op0, op1;\
    op0 = 0x12345678;\
    op1 = 0xfbca7654;\
    asm(#op " %" size "0, %" size "1" \
        : "=q" (op0), opconst (op1) \
        : "0" (op0), "1" (op1));\
    printf("%-10s A=%08x B=%08x\n",\
           #op, op0, op1);\
}

#define TEST_CMPXCHG(op, size, opconst, eax)\
{\
    int op0, op1;\
    op0 = 0x12345678;\
    op1 = 0xfbca7654;\
    asm(#op " %" size "0, %" size "1" \
        : "=q" (op0), opconst (op1) \
        : "0" (op0), "1" (op1), "a" (eax));\
    printf("%-10s EAX=%08x A=%08x C=%08x\n",\
           #op, eax, op0, op1);\
}

void test_xchg(void)
{
    TEST_XCHG(xchgl, "", "=q");
    TEST_XCHG(xchgw, "w", "=q");
    TEST_XCHG(xchgb, "b", "=q");

    TEST_XCHG(xchgl, "", "=m");
    TEST_XCHG(xchgw, "w", "=m");
    TEST_XCHG(xchgb, "b", "=m");

    TEST_XCHG(xaddl, "", "=q");
    TEST_XCHG(xaddw, "w", "=q");
    TEST_XCHG(xaddb, "b", "=q");

B
bellard 已提交
870 871 872 873 874 875 876
    {
        int res;
        res = 0x12345678;
        asm("xaddl %1, %0" : "=r" (res) : "0" (res));
        printf("xaddl same res=%08x\n", res);
    }

B
bellard 已提交
877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895
    TEST_XCHG(xaddl, "", "=m");
    TEST_XCHG(xaddw, "w", "=m");
    TEST_XCHG(xaddb, "b", "=m");

    TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfbca7654);
    TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfbca7654);
    TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfbca7654);

    TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfffefdfc);
    TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfffefdfc);
    TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfffefdfc);

    TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfbca7654);
    TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfbca7654);
    TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfbca7654);

    TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfffefdfc);
    TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfffefdfc);
    TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfffefdfc);
B
bellard 已提交
896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916

    {
        uint64_t op0, op1, op2;
        int i, eflags;

        for(i = 0; i < 2; i++) {
            op0 = 0x123456789abcd;
            if (i == 0)
                op1 = 0xfbca765423456;
            else
                op1 = op0;
            op2 = 0x6532432432434;
            asm("cmpxchg8b %1\n" 
                "pushf\n"
                "popl %2\n"
                : "=A" (op0), "=m" (op1), "=g" (eflags)
                : "0" (op0), "m" (op1), "b" ((int)op2), "c" ((int)(op2 >> 32)));
            printf("cmpxchg8b: op0=%016llx op1=%016llx CC=%02x\n", 
                    op0, op1, eflags & CC_Z);
        }
    }
B
bellard 已提交
917 918
}

B
bellard 已提交
919 920 921 922 923
/**********************************************/
/* segmentation tests */

#include <asm/ldt.h>
#include <linux/unistd.h>
B
bellard 已提交
924
#include <linux/version.h>
B
bellard 已提交
925 926 927

_syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount)

B
bellard 已提交
928 929 930 931
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66)
#define modify_ldt_ldt_s user_desc
#endif

B
bellard 已提交
932 933 934
uint8_t seg_data1[4096];
uint8_t seg_data2[4096];

B
bellard 已提交
935
#define MK_SEL(n) (((n) << 3) | 7)
B
bellard 已提交
936

B
bellard 已提交
937 938 939 940 941 942 943 944 945 946 947 948 949
#define TEST_LR(op, size, seg, mask)\
{\
    int res, res2;\
    res = 0x12345678;\
    asm (op " %" size "2, %" size "0\n" \
         "movl $0, %1\n"\
         "jnz 1f\n"\
         "movl $1, %1\n"\
         "1:\n"\
         : "=r" (res), "=r" (res2) : "m" (seg), "0" (res));\
    printf(op ": Z=%d %08x\n", res2, res & ~(mask));\
}

B
bellard 已提交
950 951 952 953 954
/* NOTE: we use Linux modify_ldt syscall */
void test_segs(void)
{
    struct modify_ldt_ldt_s ldt;
    long long ldt_table[3];
B
bellard 已提交
955
    int res, res2;
B
bellard 已提交
956
    char tmp;
B
bellard 已提交
957 958 959 960
    struct {
        uint32_t offset;
        uint16_t seg;
    } __attribute__((packed)) segoff;
B
bellard 已提交
961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984

    ldt.entry_number = 1;
    ldt.base_addr = (unsigned long)&seg_data1;
    ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12;
    ldt.seg_32bit = 1;
    ldt.contents = MODIFY_LDT_CONTENTS_DATA;
    ldt.read_exec_only = 0;
    ldt.limit_in_pages = 1;
    ldt.seg_not_present = 0;
    ldt.useable = 1;
    modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */

    ldt.entry_number = 2;
    ldt.base_addr = (unsigned long)&seg_data2;
    ldt.limit = (sizeof(seg_data2) + 0xfff) >> 12;
    ldt.seg_32bit = 1;
    ldt.contents = MODIFY_LDT_CONTENTS_DATA;
    ldt.read_exec_only = 0;
    ldt.limit_in_pages = 1;
    ldt.seg_not_present = 0;
    ldt.useable = 1;
    modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */

    modify_ldt(0, &ldt_table, sizeof(ldt_table)); /* read ldt entries */
B
bellard 已提交
985 986 987 988 989 990 991
#if 0
    {
        int i;
        for(i=0;i<3;i++)
            printf("%d: %016Lx\n", i, ldt_table[i]);
    }
#endif
B
bellard 已提交
992 993 994 995 996 997 998 999 1000
    /* do some tests with fs or gs */
    asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1)));

    seg_data1[1] = 0xaa;
    seg_data2[1] = 0x55;

    asm volatile ("fs movzbl 0x1, %0" : "=r" (res));
    printf("FS[1] = %02x\n", res);

B
bellard 已提交
1001 1002 1003 1004 1005 1006
    asm volatile ("pushl %%gs\n"
                  "movl %1, %%gs\n"
                  "gs movzbl 0x1, %0\n"
                  "popl %%gs\n"
                  : "=r" (res)
                  : "r" (MK_SEL(2)));
B
bellard 已提交
1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
    printf("GS[1] = %02x\n", res);

    /* tests with ds/ss (implicit segment case) */
    tmp = 0xa5;
    asm volatile ("pushl %%ebp\n\t"
                  "pushl %%ds\n\t"
                  "movl %2, %%ds\n\t"
                  "movl %3, %%ebp\n\t"
                  "movzbl 0x1, %0\n\t"
                  "movzbl (%%ebp), %1\n\t"
                  "popl %%ds\n\t"
                  "popl %%ebp\n\t"
                  : "=r" (res), "=r" (res2)
                  : "r" (MK_SEL(1)), "r" (&tmp));
    printf("DS[1] = %02x\n", res);
    printf("SS[tmp] = %02x\n", res2);
B
bellard 已提交
1023 1024 1025 1026 1027 1028 1029 1030

    segoff.seg = MK_SEL(2);
    segoff.offset = 0xabcdef12;
    asm volatile("lfs %2, %0\n\t" 
                 "movl %%fs, %1\n\t"
                 : "=r" (res), "=g" (res2) 
                 : "m" (segoff));
    printf("FS:reg = %04x:%08x\n", res2, res);
B
bellard 已提交
1031 1032 1033 1034 1035 1036 1037 1038 1039 1040

    TEST_LR("larw", "w", MK_SEL(2), 0x0100);
    TEST_LR("larl", "", MK_SEL(2), 0x0100);
    TEST_LR("lslw", "w", MK_SEL(2), 0);
    TEST_LR("lsll", "", MK_SEL(2), 0);

    TEST_LR("larw", "w", 0xfff8, 0);
    TEST_LR("larl", "", 0xfff8, 0);
    TEST_LR("lslw", "w", 0xfff8, 0);
    TEST_LR("lsll", "", 0xfff8, 0);
B
bellard 已提交
1041
}
B
bellard 已提交
1042

B
bellard 已提交
1043 1044 1045 1046 1047
/* 16 bit code test */
extern char code16_start, code16_end;
extern char code16_func1;
extern char code16_func2;
extern char code16_func3;
B
bellard 已提交
1048

B
bellard 已提交
1049
void test_code16(void)
B
bellard 已提交
1050
{
B
bellard 已提交
1051 1052
    struct modify_ldt_ldt_s ldt;
    int res, res2;
B
bellard 已提交
1053

B
bellard 已提交
1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064
    /* build a code segment */
    ldt.entry_number = 1;
    ldt.base_addr = (unsigned long)&code16_start;
    ldt.limit = &code16_end - &code16_start;
    ldt.seg_32bit = 0;
    ldt.contents = MODIFY_LDT_CONTENTS_CODE;
    ldt.read_exec_only = 0;
    ldt.limit_in_pages = 0;
    ldt.seg_not_present = 0;
    ldt.useable = 1;
    modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
B
bellard 已提交
1065

B
bellard 已提交
1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078
    /* call the first function */
    asm volatile ("lcall %1, %2" 
                  : "=a" (res)
                  : "i" (MK_SEL(1)), "i" (&code16_func1): "memory", "cc");
    printf("func1() = 0x%08x\n", res);
    asm volatile ("lcall %2, %3" 
                  : "=a" (res), "=c" (res2)
                  : "i" (MK_SEL(1)), "i" (&code16_func2): "memory", "cc");
    printf("func2() = 0x%08x spdec=%d\n", res, res2);
    asm volatile ("lcall %1, %2" 
                  : "=a" (res)
                  : "i" (MK_SEL(1)), "i" (&code16_func3): "memory", "cc");
    printf("func3() = 0x%08x\n", res);
B
bellard 已提交
1079 1080
}

B
bellard 已提交
1081 1082 1083
extern char func_lret32;
extern char func_iret32;

B
bellard 已提交
1084 1085 1086 1087 1088 1089 1090 1091 1092
void test_misc(void)
{
    char table[256];
    int res, i;

    for(i=0;i<256;i++) table[i] = 256 - i;
    res = 0x12345678;
    asm ("xlat" : "=a" (res) : "b" (table), "0" (res));
    printf("xlat: EAX=%08x\n", res);
B
bellard 已提交
1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107

    asm volatile ("pushl %%cs ; call %1" 
                  : "=a" (res)
                  : "m" (func_lret32): "memory", "cc");
    printf("func_lret32=%x\n", res);

    asm volatile ("pushfl ; pushl %%cs ; call %1" 
                  : "=a" (res)
                  : "m" (func_iret32): "memory", "cc");
    printf("func_iret32=%x\n", res);

    /* specific popl test */
    asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popl (%%esp) ; popl %0"
                  : "=g" (res));
    printf("popl esp=%x\n", res);
B
bellard 已提交
1108 1109 1110 1111 1112

    /* specific popw test */
    asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popw (%%esp) ; addl $2, %%esp ; popl %0"
                  : "=g" (res));
    printf("popw esp=%x\n", res);
B
bellard 已提交
1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168
}

uint8_t str_buffer[4096];

#define TEST_STRING1(OP, size, DF, REP)\
{\
    int esi, edi, eax, ecx, eflags;\
\
    esi = (long)(str_buffer + sizeof(str_buffer) / 2);\
    edi = (long)(str_buffer + sizeof(str_buffer) / 2) + 16;\
    eax = 0x12345678;\
    ecx = 17;\
\
    asm volatile ("pushl $0\n\t"\
                  "popf\n\t"\
                  DF "\n\t"\
                  REP #OP size "\n\t"\
                  "cld\n\t"\
                  "pushf\n\t"\
                  "popl %4\n\t"\
                  : "=S" (esi), "=D" (edi), "=a" (eax), "=c" (ecx), "=g" (eflags)\
                  : "0" (esi), "1" (edi), "2" (eax), "3" (ecx));\
    printf("%-10s ESI=%08x EDI=%08x EAX=%08x ECX=%08x EFL=%04x\n",\
           REP #OP size, esi, edi, eax, ecx,\
           eflags & (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));\
}

#define TEST_STRING(OP, REP)\
    TEST_STRING1(OP, "b", "", REP);\
    TEST_STRING1(OP, "w", "", REP);\
    TEST_STRING1(OP, "l", "", REP);\
    TEST_STRING1(OP, "b", "std", REP);\
    TEST_STRING1(OP, "w", "std", REP);\
    TEST_STRING1(OP, "l", "std", REP)

void test_string(void)
{
    int i;
    for(i = 0;i < sizeof(str_buffer); i++)
        str_buffer[i] = i + 0x56;
   TEST_STRING(stos, "");
   TEST_STRING(stos, "rep ");
   TEST_STRING(lods, ""); /* to verify stos */
   TEST_STRING(lods, "rep "); 
   TEST_STRING(movs, "");
   TEST_STRING(movs, "rep ");
   TEST_STRING(lods, ""); /* to verify stos */

   /* XXX: better tests */
   TEST_STRING(scas, "");
   TEST_STRING(scas, "repz ");
   TEST_STRING(scas, "repnz ");
   TEST_STRING(cmps, "");
   TEST_STRING(cmps, "repz ");
   TEST_STRING(cmps, "repnz ");
}
B
bellard 已提交
1169

1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
/* VM86 test */

static inline void set_bit(uint8_t *a, unsigned int bit)
{
    a[bit / 8] |= (1 << (bit % 8));
}

static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg)
{
    return (uint8_t *)((seg << 4) + (reg & 0xffff));
}

static inline void pushw(struct vm86_regs *r, int val)
{
    r->esp = (r->esp & ~0xffff) | ((r->esp - 2) & 0xffff);
    *(uint16_t *)seg_to_linear(r->ss, r->esp) = val;
}

#undef __syscall_return
#define __syscall_return(type, res) \
do { \
	return (type) (res); \
} while (0)

_syscall2(int, vm86, int, func, struct vm86plus_struct *, v86)

extern char vm86_code_start;
extern char vm86_code_end;

#define VM86_CODE_CS 0x100
#define VM86_CODE_IP 0x100

void test_vm86(void)
{
    struct vm86plus_struct ctx;
    struct vm86_regs *r;
    uint8_t *vm86_mem;
    int seg, ret;

    vm86_mem = mmap((void *)0x00000000, 0x110000, 
                    PROT_WRITE | PROT_READ | PROT_EXEC, 
                    MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0);
    if (vm86_mem == MAP_FAILED) {
        printf("ERROR: could not map vm86 memory");
        return;
    }
    memset(&ctx, 0, sizeof(ctx));

    /* init basic registers */
    r = &ctx.regs;
    r->eip = VM86_CODE_IP;
    r->esp = 0xfffe;
    seg = VM86_CODE_CS;
    r->cs = seg;
    r->ss = seg;
    r->ds = seg;
    r->es = seg;
    r->fs = seg;
    r->gs = seg;
    r->eflags = VIF_MASK;

    /* move code to proper address. We use the same layout as a .com
       dos program. */
    memcpy(vm86_mem + (VM86_CODE_CS << 4) + VM86_CODE_IP, 
           &vm86_code_start, &vm86_code_end - &vm86_code_start);

    /* mark int 0x21 as being emulated */
    set_bit((uint8_t *)&ctx.int_revectored, 0x21);

    for(;;) {
        ret = vm86(VM86_ENTER, &ctx);
        switch(VM86_TYPE(ret)) {
        case VM86_INTx:
            {
1244
                int int_num, ah, v;
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271
                
                int_num = VM86_ARG(ret);
                if (int_num != 0x21)
                    goto unknown_int;
                ah = (r->eax >> 8) & 0xff;
                switch(ah) {
                case 0x00: /* exit */
                    goto the_end;
                case 0x02: /* write char */
                    {
                        uint8_t c = r->edx;
                        putchar(c);
                    }
                    break;
                case 0x09: /* write string */
                    {
                        uint8_t c, *ptr;
                        ptr = seg_to_linear(r->ds, r->edx);
                        for(;;) {
                            c = *ptr++;
                            if (c == '$')
                                break;
                            putchar(c);
                        }
                        r->eax = (r->eax & ~0xff) | '$';
                    }
                    break;
1272 1273 1274 1275 1276 1277
                case 0xff: /* extension: write eflags number in edx */
                    v = (int)r->edx;
#ifndef LINUX_VM86_IOPL_FIX
                    v &= ~0x3000;
#endif
                    printf("%08x\n", v);
1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326
                    break;
                default:
                unknown_int:
                    printf("unsupported int 0x%02x\n", int_num);
                    goto the_end;
                }
            }
            break;
        case VM86_SIGNAL:
            /* a signal came, we just ignore that */
            break;
        case VM86_STI:
            break;
        default:
            printf("ERROR: unhandled vm86 return code (0x%x)\n", ret);
            goto the_end;
        }
    }
 the_end:
    printf("VM86 end\n");
    munmap(vm86_mem, 0x110000);
}

/* exception tests */
#ifndef REG_EAX
#define REG_EAX EAX
#define REG_EBX EBX
#define REG_ECX ECX
#define REG_EDX EDX
#define REG_ESI ESI
#define REG_EDI EDI
#define REG_EBP EBP
#define REG_ESP ESP
#define REG_EIP EIP
#define REG_EFL EFL
#define REG_TRAPNO TRAPNO
#define REG_ERR ERR
#endif

jmp_buf jmp_env;
int v1;
int tab[2];

void sig_handler(int sig, siginfo_t *info, void *puc)
{
    struct ucontext *uc = puc;

    printf("si_signo=%d si_errno=%d si_code=%d",
           info->si_signo, info->si_errno, info->si_code);
1327 1328
    printf(" si_addr=0x%08lx",
           (unsigned long)info->si_addr);
1329 1330 1331 1332 1333
    printf("\n");

    printf("trapno=0x%02x err=0x%08x",
           uc->uc_mcontext.gregs[REG_TRAPNO],
           uc->uc_mcontext.gregs[REG_ERR]);
1334
    printf(" EIP=0x%08x", uc->uc_mcontext.gregs[REG_EIP]);
1335 1336 1337 1338 1339 1340
    printf("\n");
    longjmp(jmp_env, 1);
}

void test_exceptions(void)
{
1341
    struct modify_ldt_ldt_s ldt;
1342 1343 1344 1345 1346 1347 1348 1349 1350
    struct sigaction act;
    volatile int val;
    
    act.sa_sigaction = sig_handler;
    sigemptyset(&act.sa_mask);
    act.sa_flags = SA_SIGINFO;
    sigaction(SIGFPE, &act, NULL);
    sigaction(SIGILL, &act, NULL);
    sigaction(SIGSEGV, &act, NULL);
1351
    sigaction(SIGBUS, &act, NULL);
1352 1353 1354
    sigaction(SIGTRAP, &act, NULL);

    /* test division by zero reporting */
1355
    printf("DIVZ exception:\n");
1356 1357 1358 1359 1360 1361
    if (setjmp(jmp_env) == 0) {
        /* now divide by zero */
        v1 = 0;
        v1 = 2 / v1;
    }

1362
    printf("BOUND exception:\n");
1363 1364 1365 1366 1367 1368 1369
    if (setjmp(jmp_env) == 0) {
        /* bound exception */
        tab[0] = 1;
        tab[1] = 10;
        asm volatile ("bound %0, %1" : : "r" (11), "m" (tab));
    }

1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397
    printf("segment exceptions:\n");
    if (setjmp(jmp_env) == 0) {
        /* load an invalid segment */
        asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 1));
    }
    if (setjmp(jmp_env) == 0) {
        /* null data segment is valid */
        asm volatile ("movl %0, %%fs" : : "r" (3));
        /* null stack segment */
        asm volatile ("movl %0, %%ss" : : "r" (3));
    }

    ldt.entry_number = 1;
    ldt.base_addr = (unsigned long)&seg_data1;
    ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12;
    ldt.seg_32bit = 1;
    ldt.contents = MODIFY_LDT_CONTENTS_DATA;
    ldt.read_exec_only = 0;
    ldt.limit_in_pages = 1;
    ldt.seg_not_present = 1;
    ldt.useable = 1;
    modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */

    if (setjmp(jmp_env) == 0) {
        /* segment not present */
        asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1)));
    }

1398
    /* test SEGV reporting */
1399
    printf("PF exception:\n");
1400
    if (setjmp(jmp_env) == 0) {
1401
        val = 1;
B
bellard 已提交
1402 1403
        /* we add a nop to test a weird PC retrieval case */
        asm volatile ("nop");
1404 1405 1406 1407 1408
        /* now store in an invalid address */
        *(char *)0x1234 = 1;
    }

    /* test SEGV reporting */
1409
    printf("PF exception:\n");
1410
    if (setjmp(jmp_env) == 0) {
1411
        val = 1;
1412 1413 1414 1415 1416 1417 1418 1419 1420 1421
        /* read from an invalid address */
        v1 = *(char *)0x1234;
    }
    
    /* test illegal instruction reporting */
    printf("UD2 exception:\n");
    if (setjmp(jmp_env) == 0) {
        /* now execute an invalid instruction */
        asm volatile("ud2");
    }
B
bellard 已提交
1422 1423 1424 1425 1426
    printf("lock nop exception:\n");
    if (setjmp(jmp_env) == 0) {
        /* now execute an invalid instruction */
        asm volatile("lock nop");
    }
1427 1428 1429 1430 1431
    
    printf("INT exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("int $0xfd");
    }
1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443
    if (setjmp(jmp_env) == 0) {
        asm volatile ("int $0x01");
    }
    if (setjmp(jmp_env) == 0) {
        asm volatile (".byte 0xcd, 0x03");
    }
    if (setjmp(jmp_env) == 0) {
        asm volatile ("int $0x04");
    }
    if (setjmp(jmp_env) == 0) {
        asm volatile ("int $0x05");
    }
1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502

    printf("INT3 exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("int3");
    }

    printf("CLI exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("cli");
    }

    printf("STI exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("cli");
    }

    printf("INTO exception:\n");
    if (setjmp(jmp_env) == 0) {
        /* overflow exception */
        asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff));
    }

    printf("OUTB exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0));
    }

    printf("INB exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321));
    }

    printf("REP OUTSB exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1));
    }

    printf("REP INSB exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1));
    }

    printf("HLT exception:\n");
    if (setjmp(jmp_env) == 0) {
        asm volatile ("hlt");
    }

    printf("single step exception:\n");
    val = 0;
    if (setjmp(jmp_env) == 0) {
        asm volatile ("pushf\n"
                      "orl $0x00100, (%%esp)\n"
                      "popf\n"
                      "movl $0xabcd, %0\n" 
                      "movl $0x0, %0\n" : "=m" (val) : : "cc", "memory");
    }
    printf("val=0x%x\n", val);
}

1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586
/* specific precise single step test */
void sig_trap_handler(int sig, siginfo_t *info, void *puc)
{
    struct ucontext *uc = puc;
    printf("EIP=0x%08x\n", uc->uc_mcontext.gregs[REG_EIP]);
}

const uint8_t sstep_buf1[4] = { 1, 2, 3, 4};
uint8_t sstep_buf2[4];

void test_single_step(void)
{
    struct sigaction act;
    volatile int val;
    int i;

    val = 0;
    act.sa_sigaction = sig_trap_handler;
    sigemptyset(&act.sa_mask);
    act.sa_flags = SA_SIGINFO;
    sigaction(SIGTRAP, &act, NULL);
    asm volatile ("pushf\n"
                  "orl $0x00100, (%%esp)\n"
                  "popf\n"
                  "movl $0xabcd, %0\n" 

                  /* jmp test */
                  "movl $3, %%ecx\n"
                  "1:\n"
                  "addl $1, %0\n"
                  "decl %%ecx\n"
                  "jnz 1b\n"

                  /* movsb: the single step should stop at each movsb iteration */
                  "movl $sstep_buf1, %%esi\n"
                  "movl $sstep_buf2, %%edi\n"
                  "movl $0, %%ecx\n"
                  "rep movsb\n"
                  "movl $3, %%ecx\n"
                  "rep movsb\n"
                  "movl $1, %%ecx\n"
                  "rep movsb\n"

                  /* cmpsb: the single step should stop at each cmpsb iteration */
                  "movl $sstep_buf1, %%esi\n"
                  "movl $sstep_buf2, %%edi\n"
                  "movl $0, %%ecx\n"
                  "rep cmpsb\n"
                  "movl $4, %%ecx\n"
                  "rep cmpsb\n"
                  
                  /* getpid() syscall: single step should skip one
                     instruction */
                  "movl $20, %%eax\n"
                  "int $0x80\n"
                  "movl $0, %%eax\n"
                  
                  /* when modifying SS, trace is not done on the next
                     instruction */
                  "movl %%ss, %%ecx\n"
                  "movl %%ecx, %%ss\n"
                  "addl $1, %0\n"
                  "movl $1, %%eax\n"
                  "movl %%ecx, %%ss\n"
                  "jmp 1f\n"
                  "addl $1, %0\n"
                  "1:\n"
                  "movl $1, %%eax\n"
                  "pushl %%ecx\n"
                  "popl %%ss\n"
                  "addl $1, %0\n"
                  "movl $1, %%eax\n"
                  
                  "pushf\n"
                  "andl $~0x00100, (%%esp)\n"
                  "popf\n"
                  : "=m" (val) 
                  : 
                  : "cc", "memory", "eax", "ecx", "esi", "edi");
    printf("val=%d\n", val);
    for(i = 0; i < 4; i++)
        printf("sstep_buf2[%d] = %d\n", i, sstep_buf2[i]);
}

1587 1588 1589 1590 1591 1592
/* self modifying code test */
uint8_t code[] = {
    0xb8, 0x1, 0x00, 0x00, 0x00, /* movl $1, %eax */
    0xc3, /* ret */
};

B
bellard 已提交
1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606
asm("smc_code2:\n"
    "movl 4(%esp), %eax\n"
    "movl %eax, smc_patch_addr2 + 1\n"
    "nop\n"
    "nop\n"
    "nop\n"
    "nop\n"
    "nop\n"
    "nop\n"
    "nop\n"
    "nop\n"
    "smc_patch_addr2:\n"
    "movl $1, %eax\n"
    "ret\n");
1607

B
bellard 已提交
1608 1609
typedef int FuncType(void);
extern int smc_code2(int);
1610 1611
void test_self_modifying_code(void)
{
1612
    int i;
1613 1614

    printf("self modifying code:\n");
1615 1616 1617 1618 1619
    printf("func1 = 0x%x\n", ((FuncType *)code)());
    for(i = 2; i <= 4; i++) {
        code[1] = i;
        printf("func%d = 0x%x\n", i, ((FuncType *)code)());
    }
B
bellard 已提交
1620 1621 1622 1623 1624 1625 1626

    /* more difficult test : the modified code is just after the
       modifying instruction. It is forbidden in Intel specs, but it
       is used by old DOS programs */
    for(i = 2; i <= 4; i++) {
        printf("smc_code2(%d) = %d\n", i, smc_code2(i));
    }
1627 1628
}
    
B
bellard 已提交
1629 1630 1631 1632 1633 1634
static void *call_end __init_call = NULL;

int main(int argc, char **argv)
{
    void **ptr;
    void (*func)(void);
B
bellard 已提交
1635

B
bellard 已提交
1636 1637 1638 1639 1640
    ptr = &call_start + 1;
    while (*ptr != NULL) {
        func = *ptr++;
        func();
    }
B
bellard 已提交
1641
    test_bsx();
1642
    test_mul();
B
bellard 已提交
1643
    test_jcc();
B
bellard 已提交
1644
    test_floats();
B
bellard 已提交
1645
    test_bcd();
B
bellard 已提交
1646
    test_xchg();
B
bellard 已提交
1647 1648
    test_string();
    test_misc();
B
bellard 已提交
1649 1650
    test_lea();
    test_segs();
B
bellard 已提交
1651
    test_code16();
1652 1653 1654
    test_vm86();
    test_exceptions();
    test_self_modifying_code();
1655
    test_single_step();
B
bellard 已提交
1656 1657
    return 0;
}