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real mode support (now boots from BOCHS BIOS and LGPL'ed VGA BIOS)
[mirror_qemu.git] / tests / test-i386.c
CommitLineData
3a27ad0b 1#define _GNU_SOURCE
4d1135e4
FB		 2#include <stdlib.h>
3#include <stdio.h>
e3e86d56 4#include <string.h>
6dbad63e 5#include <inttypes.h>
4d1135e4 6#include <math.h>
3a27ad0b
FB		 7#include <signal.h>
8#include <setjmp.h>
070893f4 9#include <errno.h>
3a27ad0b
FB		 10#include <sys/ucontext.h>
11#include <sys/mman.h>
12#include <asm/vm86.h>
4d1135e4 13
03bfca94
FB		 14#define TEST_CMOV 0
15#define TEST_FCOMI 0
5dd9488c 16
4d1135e4
FB		 17#define xglue(x, y) x ## y
18#define glue(x, y) xglue(x, y)
19#define stringify(s) tostring(s)
20#define tostring(s) #s
21
22#define CC_C 0x0001
23#define CC_P 0x0004
24#define CC_A 0x0010
25#define CC_Z 0x0040
26#define CC_S 0x0080
27#define CC_O 0x0800
28
4d1135e4
FB		 29#define __init_call __attribute__ ((unused,__section__ (".initcall.init")))
30
31static void *call_start __init_call = NULL;
32
4b74fe1f
FB		 33#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)
34
4d1135e4
FB		 35#define OP add
36#include "test-i386.h"
37
38#define OP sub
39#include "test-i386.h"
40
41#define OP xor
42#include "test-i386.h"
43
44#define OP and
45#include "test-i386.h"
46
47#define OP or
48#include "test-i386.h"
49
50#define OP cmp
51#include "test-i386.h"
52
53#define OP adc
54#define OP_CC
55#include "test-i386.h"
56
57#define OP sbb
58#define OP_CC
59#include "test-i386.h"
60
61#define OP inc
62#define OP_CC
63#define OP1
64#include "test-i386.h"
65
66#define OP dec
67#define OP_CC
68#define OP1
69#include "test-i386.h"
70
71#define OP neg
72#define OP_CC
73#define OP1
74#include "test-i386.h"
75
76#define OP not
77#define OP_CC
78#define OP1
79#include "test-i386.h"
80
4b74fe1f
FB		 81#undef CC_MASK
82#define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O)
83
379ca80d
FB		 84#define OP shl
85#include "test-i386-shift.h"
86
87#define OP shr
88#include "test-i386-shift.h"
89
90#define OP sar
91#include "test-i386-shift.h"
92
93#define OP rol
94#include "test-i386-shift.h"
95
96#define OP ror
97#include "test-i386-shift.h"
98
99#define OP rcr
100#define OP_CC
101#include "test-i386-shift.h"
102
103#define OP rcl
104#define OP_CC
105#include "test-i386-shift.h"
106
d57c4e01
FB		 107#define OP shld
108#define OP_SHIFTD
109#define OP_NOBYTE
110#include "test-i386-shift.h"
111
112#define OP shrd
113#define OP_SHIFTD
114#define OP_NOBYTE
115#include "test-i386-shift.h"
116
117/* XXX: should be more precise ? */
118#undef CC_MASK
119#define CC_MASK (CC_C)
120
121#define OP bt
122#define OP_NOBYTE
123#include "test-i386-shift.h"
124
125#define OP bts
126#define OP_NOBYTE
127#include "test-i386-shift.h"
128
129#define OP btr
130#define OP_NOBYTE
131#include "test-i386-shift.h"
132
133#define OP btc
134#define OP_NOBYTE
135#include "test-i386-shift.h"
379ca80d 136
4d1135e4
FB		 137/* lea test (modrm support) */
138#define TEST_LEA(STR)\
139{\
140 asm("leal " STR ", %0"\
141 : "=r" (res)\
142 : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\
143 printf("lea %s = %08x\n", STR, res);\
144}
145
146#define TEST_LEA16(STR)\
147{\
148 asm(".code16 ; .byte 0x67 ; leal " STR ", %0 ; .code32"\
149 : "=wq" (res)\
150 : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\
151 printf("lea %s = %08x\n", STR, res);\
152}
153
154
155void test_lea(void)
156{
157 int eax, ebx, ecx, edx, esi, edi, res;
158 eax = 0x0001;
159 ebx = 0x0002;
160 ecx = 0x0004;
161 edx = 0x0008;
162 esi = 0x0010;
163 edi = 0x0020;
164
165 TEST_LEA("0x4000");
166
167 TEST_LEA("(%%eax)");
168 TEST_LEA("(%%ebx)");
169 TEST_LEA("(%%ecx)");
170 TEST_LEA("(%%edx)");
171 TEST_LEA("(%%esi)");
172 TEST_LEA("(%%edi)");
173
174 TEST_LEA("0x40(%%eax)");
175 TEST_LEA("0x40(%%ebx)");
176 TEST_LEA("0x40(%%ecx)");
177 TEST_LEA("0x40(%%edx)");
178 TEST_LEA("0x40(%%esi)");
179 TEST_LEA("0x40(%%edi)");
180
181 TEST_LEA("0x4000(%%eax)");
182 TEST_LEA("0x4000(%%ebx)");
183 TEST_LEA("0x4000(%%ecx)");
184 TEST_LEA("0x4000(%%edx)");
185 TEST_LEA("0x4000(%%esi)");
186 TEST_LEA("0x4000(%%edi)");
187
188 TEST_LEA("(%%eax, %%ecx)");
189 TEST_LEA("(%%ebx, %%edx)");
190 TEST_LEA("(%%ecx, %%ecx)");
191 TEST_LEA("(%%edx, %%ecx)");
192 TEST_LEA("(%%esi, %%ecx)");
193 TEST_LEA("(%%edi, %%ecx)");
194
195 TEST_LEA("0x40(%%eax, %%ecx)");
196 TEST_LEA("0x4000(%%ebx, %%edx)");
197
198 TEST_LEA("(%%ecx, %%ecx, 2)");
199 TEST_LEA("(%%edx, %%ecx, 4)");
200 TEST_LEA("(%%esi, %%ecx, 8)");
201
202 TEST_LEA("(,%%eax, 2)");
203 TEST_LEA("(,%%ebx, 4)");
204 TEST_LEA("(,%%ecx, 8)");
205
206 TEST_LEA("0x40(,%%eax, 2)");
207 TEST_LEA("0x40(,%%ebx, 4)");
208 TEST_LEA("0x40(,%%ecx, 8)");
209
210
211 TEST_LEA("-10(%%ecx, %%ecx, 2)");
212 TEST_LEA("-10(%%edx, %%ecx, 4)");
213 TEST_LEA("-10(%%esi, %%ecx, 8)");
214
215 TEST_LEA("0x4000(%%ecx, %%ecx, 2)");
216 TEST_LEA("0x4000(%%edx, %%ecx, 4)");
217 TEST_LEA("0x4000(%%esi, %%ecx, 8)");
218
219 /* limited 16 bit addressing test */
220 TEST_LEA16("0x4000");
221 TEST_LEA16("(%%bx)");
222 TEST_LEA16("(%%si)");
223 TEST_LEA16("(%%di)");
224 TEST_LEA16("0x40(%%bx)");
225 TEST_LEA16("0x40(%%si)");
226 TEST_LEA16("0x40(%%di)");
227 TEST_LEA16("0x4000(%%bx)");
228 TEST_LEA16("0x4000(%%si)");
229 TEST_LEA16("(%%bx,%%si)");
230 TEST_LEA16("(%%bx,%%di)");
231 TEST_LEA16("0x40(%%bx,%%si)");
232 TEST_LEA16("0x40(%%bx,%%di)");
233 TEST_LEA16("0x4000(%%bx,%%si)");
234 TEST_LEA16("0x4000(%%bx,%%di)");
235}
236
237#define TEST_JCC(JCC, v1, v2)\
238{\
5dd9488c 239 int res;\
4d1135e4
FB		 240 asm("movl $1, %0\n\t"\
241 "cmpl %2, %1\n\t"\
5dd9488c 242 "j" JCC " 1f\n\t"\
4d1135e4
FB		 243 "movl $0, %0\n\t"\
244 "1:\n\t"\
245 : "=r" (res)\
246 : "r" (v1), "r" (v2));\
5dd9488c
FB		 247 printf("%-10s %d\n", "j" JCC, res);\
248\
249 asm("movl $0, %0\n\t"\
250 "cmpl %2, %1\n\t"\
251 "set" JCC " %b0\n\t"\
252 : "=r" (res)\
253 : "r" (v1), "r" (v2));\
254 printf("%-10s %d\n", "set" JCC, res);\
255 if (TEST_CMOV) {\
256 asm("movl $0x12345678, %0\n\t"\
257 "cmpl %2, %1\n\t"\
258 "cmov" JCC "l %3, %0\n\t"\
259 : "=r" (res)\
260 : "r" (v1), "r" (v2), "m" (1));\
261 printf("%-10s R=0x%08x\n", "cmov" JCC "l", res);\
262 asm("movl $0x12345678, %0\n\t"\
263 "cmpl %2, %1\n\t"\
264 "cmov" JCC "w %w3, %w0\n\t"\
265 : "=r" (res)\
266 : "r" (v1), "r" (v2), "r" (1));\
267 printf("%-10s R=0x%08x\n", "cmov" JCC "w", res);\
268 } \
4d1135e4
FB		 269}
270
271/* various jump tests */
272void test_jcc(void)
273{
5dd9488c
FB		 274 TEST_JCC("ne", 1, 1);
275 TEST_JCC("ne", 1, 0);
4d1135e4 276
5dd9488c
FB		 277 TEST_JCC("e", 1, 1);
278 TEST_JCC("e", 1, 0);
4d1135e4 279
5dd9488c
FB		 280 TEST_JCC("l", 1, 1);
281 TEST_JCC("l", 1, 0);
282 TEST_JCC("l", 1, -1);
4d1135e4 283
5dd9488c
FB		 284 TEST_JCC("le", 1, 1);
285 TEST_JCC("le", 1, 0);
286 TEST_JCC("le", 1, -1);
4d1135e4 287
5dd9488c
FB		 288 TEST_JCC("ge", 1, 1);
289 TEST_JCC("ge", 1, 0);
290 TEST_JCC("ge", -1, 1);
4d1135e4 291
5dd9488c
FB		 292 TEST_JCC("g", 1, 1);
293 TEST_JCC("g", 1, 0);
294 TEST_JCC("g", 1, -1);
4d1135e4 295
5dd9488c
FB		 296 TEST_JCC("b", 1, 1);
297 TEST_JCC("b", 1, 0);
298 TEST_JCC("b", 1, -1);
4d1135e4 299
5dd9488c
FB		 300 TEST_JCC("be", 1, 1);
301 TEST_JCC("be", 1, 0);
302 TEST_JCC("be", 1, -1);
4d1135e4 303
5dd9488c
FB		 304 TEST_JCC("ae", 1, 1);
305 TEST_JCC("ae", 1, 0);
306 TEST_JCC("ae", 1, -1);
4d1135e4 307
5dd9488c
FB		 308 TEST_JCC("a", 1, 1);
309 TEST_JCC("a", 1, 0);
310 TEST_JCC("a", 1, -1);
4d1135e4
FB		 311
312
5dd9488c
FB		 313 TEST_JCC("p", 1, 1);
314 TEST_JCC("p", 1, 0);
4d1135e4 315
5dd9488c
FB		 316 TEST_JCC("np", 1, 1);
317 TEST_JCC("np", 1, 0);
4d1135e4 318
5dd9488c
FB		 319 TEST_JCC("o", 0x7fffffff, 0);
320 TEST_JCC("o", 0x7fffffff, -1);
4d1135e4 321
5dd9488c
FB		 322 TEST_JCC("no", 0x7fffffff, 0);
323 TEST_JCC("no", 0x7fffffff, -1);
4d1135e4 324
5dd9488c
FB		 325 TEST_JCC("s", 0, 1);
326 TEST_JCC("s", 0, -1);
327 TEST_JCC("s", 0, 0);
4d1135e4 328
5dd9488c
FB		 329 TEST_JCC("ns", 0, 1);
330 TEST_JCC("ns", 0, -1);
331 TEST_JCC("ns", 0, 0);
4d1135e4
FB		 332}
333
4b74fe1f
FB		 334#undef CC_MASK
335#define CC_MASK (CC_O | CC_C)
336
337#define OP mul
338#include "test-i386-muldiv.h"
339
340#define OP imul
341#include "test-i386-muldiv.h"
342
343#undef CC_MASK
344#define CC_MASK (0)
345
346#define OP div
347#include "test-i386-muldiv.h"
348
349#define OP idiv
350#include "test-i386-muldiv.h"
351
352void test_imulw2(int op0, int op1)
353{
354 int res, s1, s0, flags;
355 s0 = op0;
356 s1 = op1;
357 res = s0;
358 flags = 0;
359 asm ("push %4\n\t"
360 "popf\n\t"
361 "imulw %w2, %w0\n\t"
362 "pushf\n\t"
363 "popl %1\n\t"
364 : "=q" (res), "=g" (flags)
365 : "q" (s1), "0" (res), "1" (flags));
366 printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",
367 "imulw", s0, s1, res, flags & CC_MASK);
368}
369
370void test_imull2(int op0, int op1)
371{
372 int res, s1, s0, flags;
373 s0 = op0;
374 s1 = op1;
375 res = s0;
376 flags = 0;
377 asm ("push %4\n\t"
378 "popf\n\t"
379 "imull %2, %0\n\t"
380 "pushf\n\t"
381 "popl %1\n\t"
382 : "=q" (res), "=g" (flags)
383 : "q" (s1), "0" (res), "1" (flags));
384 printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",
385 "imull", s0, s1, res, flags & CC_MASK);
386}
387
388void test_mul(void)
389{
390 test_imulb(0x1234561d, 4);
391 test_imulb(3, -4);
392 test_imulb(0x80, 0x80);
393 test_imulb(0x10, 0x10);
394
395 test_imulw(0, 0x1234001d, 45);
396 test_imulw(0, 23, -45);
397 test_imulw(0, 0x8000, 0x8000);
398 test_imulw(0, 0x100, 0x100);
399
400 test_imull(0, 0x1234001d, 45);
401 test_imull(0, 23, -45);
402 test_imull(0, 0x80000000, 0x80000000);
403 test_imull(0, 0x10000, 0x10000);
404
405 test_mulb(0x1234561d, 4);
406 test_mulb(3, -4);
407 test_mulb(0x80, 0x80);
408 test_mulb(0x10, 0x10);
409
410 test_mulw(0, 0x1234001d, 45);
411 test_mulw(0, 23, -45);
412 test_mulw(0, 0x8000, 0x8000);
413 test_mulw(0, 0x100, 0x100);
414
415 test_mull(0, 0x1234001d, 45);
416 test_mull(0, 23, -45);
417 test_mull(0, 0x80000000, 0x80000000);
418 test_mull(0, 0x10000, 0x10000);
419
420 test_imulw2(0x1234001d, 45);
421 test_imulw2(23, -45);
422 test_imulw2(0x8000, 0x8000);
423 test_imulw2(0x100, 0x100);
424
425 test_imull2(0x1234001d, 45);
426 test_imull2(23, -45);
427 test_imull2(0x80000000, 0x80000000);
428 test_imull2(0x10000, 0x10000);
429
430 test_idivb(0x12341678, 0x127e);
431 test_idivb(0x43210123, -5);
432 test_idivb(0x12340004, -1);
433
434 test_idivw(0, 0x12345678, 12347);
435 test_idivw(0, -23223, -45);
436 test_idivw(0, 0x12348000, -1);
437 test_idivw(0x12343, 0x12345678, 0x81238567);
438
439 test_idivl(0, 0x12345678, 12347);
440 test_idivl(0, -233223, -45);
441 test_idivl(0, 0x80000000, -1);
442 test_idivl(0x12343, 0x12345678, 0x81234567);
443
444 test_divb(0x12341678, 0x127e);
445 test_divb(0x43210123, -5);
446 test_divb(0x12340004, -1);
447
448 test_divw(0, 0x12345678, 12347);
449 test_divw(0, -23223, -45);
450 test_divw(0, 0x12348000, -1);
451 test_divw(0x12343, 0x12345678, 0x81238567);
452
453 test_divl(0, 0x12345678, 12347);
454 test_divl(0, -233223, -45);
455 test_divl(0, 0x80000000, -1);
456 test_divl(0x12343, 0x12345678, 0x81234567);
457}
458
9d8e9c09
FB		 459#define TEST_BSX(op, size, op0)\
460{\
461 int res, val, resz;\
462 val = op0;\
463 asm("xorl %1, %1 ; " #op " %" size "2, %" size "0 ; setz %b1" \
464 : "=r" (res), "=q" (resz)\
465 : "g" (val));\
466 printf("%-10s A=%08x R=%08x %d\n", #op, val, resz ? 0 : res, resz);\
467}
468
469void test_bsx(void)
470{
471 TEST_BSX(bsrw, "w", 0);
472 TEST_BSX(bsrw, "w", 0x12340128);
473 TEST_BSX(bsrl, "", 0);
474 TEST_BSX(bsrl, "", 0x00340128);
475 TEST_BSX(bsfw, "w", 0);
476 TEST_BSX(bsfw, "w", 0x12340128);
477 TEST_BSX(bsfl, "", 0);
478 TEST_BSX(bsfl, "", 0x00340128);
479}
480
55480af8
FB		 481/**********************************************/
482
9d8e9c09
FB		 483void test_fops(double a, double b)
484{
485 printf("a=%f b=%f a+b=%f\n", a, b, a + b);
486 printf("a=%f b=%f a-b=%f\n", a, b, a - b);
487 printf("a=%f b=%f a*b=%f\n", a, b, a * b);
488 printf("a=%f b=%f a/b=%f\n", a, b, a / b);
489 printf("a=%f b=%f fmod(a, b)=%f\n", a, b, fmod(a, b));
490 printf("a=%f sqrt(a)=%f\n", a, sqrt(a));
491 printf("a=%f sin(a)=%f\n", a, sin(a));
492 printf("a=%f cos(a)=%f\n", a, cos(a));
493 printf("a=%f tan(a)=%f\n", a, tan(a));
494 printf("a=%f log(a)=%f\n", a, log(a));
495 printf("a=%f exp(a)=%f\n", a, exp(a));
496 printf("a=%f b=%f atan2(a, b)=%f\n", a, b, atan2(a, b));
497 /* just to test some op combining */
498 printf("a=%f asin(sin(a))=%f\n", a, asin(sin(a)));
499 printf("a=%f acos(cos(a))=%f\n", a, acos(cos(a)));
500 printf("a=%f atan(tan(a))=%f\n", a, atan(tan(a)));
501
502}
503
504void test_fcmp(double a, double b)
505{
506 printf("(%f<%f)=%d\n",
507 a, b, a < b);
508 printf("(%f<=%f)=%d\n",
509 a, b, a <= b);
510 printf("(%f==%f)=%d\n",
511 a, b, a == b);
512 printf("(%f>%f)=%d\n",
513 a, b, a > b);
514 printf("(%f<=%f)=%d\n",
515 a, b, a >= b);
03bfca94
FB		 516 if (TEST_FCOMI) {
517 unsigned int eflags;
518 /* test f(u)comi instruction */
519 asm("fcomi %2, %1\n"
520 "pushf\n"
521 "pop %0\n"
522 : "=r" (eflags)
523 : "t" (a), "u" (b));
524 printf("fcomi(%f %f)=%08x\n", a, b, eflags & (CC_Z | CC_P | CC_C));
525 }
9d8e9c09
FB		 526}
527
528void test_fcvt(double a)
529{
530 float fa;
531 long double la;
ea768640
FB		 532 int16_t fpuc;
533 int i;
534 int64_t lla;
535 int ia;
536 int16_t wa;
537 double ra;
9d8e9c09
FB		 538
539 fa = a;
540 la = a;
541 printf("(float)%f = %f\n", a, fa);
542 printf("(long double)%f = %Lf\n", a, la);
c5e9815d
FB		 543 printf("a=%016Lx\n", *(long long *)&a);
544 printf("la=%016Lx %04x\n", *(long long *)&la,
545 *(unsigned short *)((char *)(&la) + 8));
ea768640
FB		 546
547 /* test all roundings */
548 asm volatile ("fstcw %0" : "=m" (fpuc));
549 for(i=0;i<4;i++) {
550 asm volatile ("fldcw %0" : : "m" ((fpuc & ~0x0c00) | (i << 10)));
551 asm volatile ("fist %0" : "=m" (wa) : "t" (a));
552 asm volatile ("fistl %0" : "=m" (ia) : "t" (a));
553 asm volatile ("fistpll %0" : "=m" (lla) : "t" (a) : "st");
554 asm volatile ("frndint ; fstl %0" : "=m" (ra) : "t" (a));
555 asm volatile ("fldcw %0" : : "m" (fpuc));
556 printf("(short)a = %d\n", wa);
557 printf("(int)a = %d\n", ia);
558 printf("(int64_t)a = %Ld\n", lla);
559 printf("rint(a) = %f\n", ra);
560 }
9d8e9c09
FB		 561}
562
563#define TEST(N) \
564 asm("fld" #N : "=t" (a)); \
565 printf("fld" #N "= %f\n", a);
566
567void test_fconst(void)
568{
569 double a;
570 TEST(1);
571 TEST(l2t);
572 TEST(l2e);
573 TEST(pi);
574 TEST(lg2);
575 TEST(ln2);
576 TEST(z);
577}
578
c5e9815d
FB		 579void test_fbcd(double a)
580{
581 unsigned short bcd[5];
582 double b;
583
584 asm("fbstp %0" : "=m" (bcd[0]) : "t" (a) : "st");
585 asm("fbld %1" : "=t" (b) : "m" (bcd[0]));
586 printf("a=%f bcd=%04x%04x%04x%04x%04x b=%f\n",
587 a, bcd[4], bcd[3], bcd[2], bcd[1], bcd[0], b);
588}
589
03bfca94
FB		 590#define TEST_ENV(env, prefix)\
591{\
592 memset((env), 0xaa, sizeof(*(env)));\
593 asm("fld1\n"\
594 prefix "fnstenv %1\n"\
595 prefix "fldenv %1\n"\
e3e86d56 596 : "=t" (res) : "m" (*(env)));\
03bfca94
FB		 597 printf("res=%f\n", res);\
598 printf("fpuc=%04x fpus=%04x fptag=%04x\n",\
599 (env)->fpuc,\
600 (env)->fpus & 0xff00,\
601 (env)->fptag);\
602 memset((env), 0xaa, sizeof(*(env)));\
603 asm("fld1\n"\
604 prefix "fnsave %1\n"\
605 prefix "frstor %1\n"\
e3e86d56 606 : "=t" (res) : "m" (*(env)));\
03bfca94
FB		 607 printf("res=%f\n", res);\
608 printf("fpuc=%04x fpus=%04x fptag=%04x\n",\
609 (env)->fpuc,\
610 (env)->fpus & 0xff00,\
611 (env)->fptag);\
612 printf("ST(0) = %Lf\n",\
613 (env)->fpregs[0]);\
614}
615
616void test_fenv(void)
617{
618 struct __attribute__((packed)) {
619 uint16_t fpuc;
620 uint16_t dummy1;
621 uint16_t fpus;
622 uint16_t dummy2;
623 uint16_t fptag;
624 uint16_t dummy3;
625 uint32_t ignored[4];
626 long double fpregs[8];
627 } float_env32;
628 struct __attribute__((packed)) {
629 uint16_t fpuc;
630 uint16_t fpus;
631 uint16_t fptag;
632 uint16_t ignored[4];
633 long double fpregs[8];
634 } float_env16;
635 double res;
636
637 TEST_ENV(&float_env16, "data16 ");
638 TEST_ENV(&float_env32, "");
639}
640
9d8e9c09
FB		 641void test_floats(void)
642{
643 test_fops(2, 3);
644 test_fops(1.4, -5);
645 test_fcmp(2, -1);
646 test_fcmp(2, 2);
647 test_fcmp(2, 3);
ea768640
FB		 648 test_fcvt(0.5);
649 test_fcvt(-0.5);
9d8e9c09
FB		 650 test_fcvt(1.0/7.0);
651 test_fcvt(-1.0/9.0);
ea768640
FB		 652 test_fcvt(32768);
653 test_fcvt(-1e20);
9d8e9c09 654 test_fconst();
c5e9815d
FB		 655 test_fbcd(1234567890123456);
656 test_fbcd(-123451234567890);
03bfca94 657 test_fenv();
9d8e9c09 658}
4b74fe1f 659
55480af8
FB		 660/**********************************************/
661
662#define TEST_BCD(op, op0, cc_in, cc_mask)\
663{\
664 int res, flags;\
665 res = op0;\
666 flags = cc_in;\
667 asm ("push %3\n\t"\
668 "popf\n\t"\
669 #op "\n\t"\
670 "pushf\n\t"\
671 "popl %1\n\t"\
672 : "=a" (res), "=g" (flags)\
673 : "0" (res), "1" (flags));\
674 printf("%-10s A=%08x R=%08x CCIN=%04x CC=%04x\n",\
675 #op, op0, res, cc_in, flags & cc_mask);\
676}
677
678void test_bcd(void)
679{
680 TEST_BCD(daa, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
681 TEST_BCD(daa, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
682 TEST_BCD(daa, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
683 TEST_BCD(daa, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
684 TEST_BCD(daa, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
685 TEST_BCD(daa, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
686 TEST_BCD(daa, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
687 TEST_BCD(daa, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));
688 TEST_BCD(daa, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));
689 TEST_BCD(daa, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
690 TEST_BCD(daa, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
691 TEST_BCD(daa, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
692 TEST_BCD(daa, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
693
694 TEST_BCD(das, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
695 TEST_BCD(das, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
696 TEST_BCD(das, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
697 TEST_BCD(das, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
698 TEST_BCD(das, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
699 TEST_BCD(das, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
700 TEST_BCD(das, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
701 TEST_BCD(das, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));
702 TEST_BCD(das, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A));
703 TEST_BCD(das, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
704 TEST_BCD(das, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A));
705 TEST_BCD(das, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
706 TEST_BCD(das, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A));
707
708 TEST_BCD(aaa, 0x12340205, CC_A, (CC_C | CC_A));
709 TEST_BCD(aaa, 0x12340306, CC_A, (CC_C | CC_A));
710 TEST_BCD(aaa, 0x1234040a, CC_A, (CC_C | CC_A));
711 TEST_BCD(aaa, 0x123405fa, CC_A, (CC_C | CC_A));
712 TEST_BCD(aaa, 0x12340205, 0, (CC_C | CC_A));
713 TEST_BCD(aaa, 0x12340306, 0, (CC_C | CC_A));
714 TEST_BCD(aaa, 0x1234040a, 0, (CC_C | CC_A));
715 TEST_BCD(aaa, 0x123405fa, 0, (CC_C | CC_A));
716
717 TEST_BCD(aas, 0x12340205, CC_A, (CC_C | CC_A));
718 TEST_BCD(aas, 0x12340306, CC_A, (CC_C | CC_A));
719 TEST_BCD(aas, 0x1234040a, CC_A, (CC_C | CC_A));
720 TEST_BCD(aas, 0x123405fa, CC_A, (CC_C | CC_A));
721 TEST_BCD(aas, 0x12340205, 0, (CC_C | CC_A));
722 TEST_BCD(aas, 0x12340306, 0, (CC_C | CC_A));
723 TEST_BCD(aas, 0x1234040a, 0, (CC_C | CC_A));
724 TEST_BCD(aas, 0x123405fa, 0, (CC_C | CC_A));
725
726 TEST_BCD(aam, 0x12340547, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));
727 TEST_BCD(aad, 0x12340407, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));
728}
729
e5918247
FB		 730#define TEST_XCHG(op, size, opconst)\
731{\
732 int op0, op1;\
733 op0 = 0x12345678;\
734 op1 = 0xfbca7654;\
735 asm(#op " %" size "0, %" size "1" \
736 : "=q" (op0), opconst (op1) \
737 : "0" (op0), "1" (op1));\
738 printf("%-10s A=%08x B=%08x\n",\
739 #op, op0, op1);\
740}
741
742#define TEST_CMPXCHG(op, size, opconst, eax)\
743{\
744 int op0, op1;\
745 op0 = 0x12345678;\
746 op1 = 0xfbca7654;\
747 asm(#op " %" size "0, %" size "1" \
748 : "=q" (op0), opconst (op1) \
749 : "0" (op0), "1" (op1), "a" (eax));\
750 printf("%-10s EAX=%08x A=%08x C=%08x\n",\
751 #op, eax, op0, op1);\
752}
753
754void test_xchg(void)
755{
756 TEST_XCHG(xchgl, "", "=q");
757 TEST_XCHG(xchgw, "w", "=q");
758 TEST_XCHG(xchgb, "b", "=q");
759
760 TEST_XCHG(xchgl, "", "=m");
761 TEST_XCHG(xchgw, "w", "=m");
762 TEST_XCHG(xchgb, "b", "=m");
763
764 TEST_XCHG(xaddl, "", "=q");
765 TEST_XCHG(xaddw, "w", "=q");
766 TEST_XCHG(xaddb, "b", "=q");
767
768 TEST_XCHG(xaddl, "", "=m");
769 TEST_XCHG(xaddw, "w", "=m");
770 TEST_XCHG(xaddb, "b", "=m");
771
772 TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfbca7654);
773 TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfbca7654);
774 TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfbca7654);
775
776 TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfffefdfc);
777 TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfffefdfc);
778 TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfffefdfc);
779
780 TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfbca7654);
781 TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfbca7654);
782 TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfbca7654);
783
784 TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfffefdfc);
785 TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfffefdfc);
786 TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfffefdfc);
787}
788
6dbad63e
FB		 789/**********************************************/
790/* segmentation tests */
791
792#include <asm/ldt.h>
793#include <linux/unistd.h>
794
795_syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount)
796
797uint8_t seg_data1[4096];
798uint8_t seg_data2[4096];
799
e5918247 800#define MK_SEL(n) (((n) << 3) | 7)
6dbad63e 801
288426fe
FB		 802#define TEST_LR(op, size, seg, mask)\
803{\
804 int res, res2;\
805 res = 0x12345678;\
806 asm (op " %" size "2, %" size "0\n" \
807 "movl $0, %1\n"\
808 "jnz 1f\n"\
809 "movl $1, %1\n"\
810 "1:\n"\
811 : "=r" (res), "=r" (res2) : "m" (seg), "0" (res));\
812 printf(op ": Z=%d %08x\n", res2, res & ~(mask));\
813}
814
6dbad63e
FB		 815/* NOTE: we use Linux modify_ldt syscall */
816void test_segs(void)
817{
818 struct modify_ldt_ldt_s ldt;
819 long long ldt_table[3];
04369ff2 820 int res, res2;
6dbad63e 821 char tmp;
e1d4294a
FB		 822 struct {
823 uint32_t offset;
824 uint16_t seg;
825 } __attribute__((packed)) segoff;
6dbad63e
FB		 826
827 ldt.entry_number = 1;
828 ldt.base_addr = (unsigned long)&seg_data1;
829 ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12;
830 ldt.seg_32bit = 1;
831 ldt.contents = MODIFY_LDT_CONTENTS_DATA;
832 ldt.read_exec_only = 0;
833 ldt.limit_in_pages = 1;
834 ldt.seg_not_present = 0;
835 ldt.useable = 1;
836 modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
837
838 ldt.entry_number = 2;
839 ldt.base_addr = (unsigned long)&seg_data2;
840 ldt.limit = (sizeof(seg_data2) + 0xfff) >> 12;
841 ldt.seg_32bit = 1;
842 ldt.contents = MODIFY_LDT_CONTENTS_DATA;
843 ldt.read_exec_only = 0;
844 ldt.limit_in_pages = 1;
845 ldt.seg_not_present = 0;
846 ldt.useable = 1;
847 modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
848
849 modify_ldt(0, &ldt_table, sizeof(ldt_table)); /* read ldt entries */
04369ff2
FB		 850#if 0
851 {
852 int i;
853 for(i=0;i<3;i++)
854 printf("%d: %016Lx\n", i, ldt_table[i]);
855 }
856#endif
6dbad63e
FB		 857 /* do some tests with fs or gs */
858 asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1)));
6dbad63e
FB		 859
860 seg_data1[1] = 0xaa;
861 seg_data2[1] = 0x55;
862
863 asm volatile ("fs movzbl 0x1, %0" : "=r" (res));
864 printf("FS[1] = %02x\n", res);
865
070893f4
FB		 866 asm volatile ("pushl %%gs\n"
867 "movl %1, %%gs\n"
868 "gs movzbl 0x1, %0\n"
869 "popl %%gs\n"
870 : "=r" (res)
871 : "r" (MK_SEL(2)));
6dbad63e
FB		 872 printf("GS[1] = %02x\n", res);
873
874 /* tests with ds/ss (implicit segment case) */
875 tmp = 0xa5;
876 asm volatile ("pushl %%ebp\n\t"
877 "pushl %%ds\n\t"
878 "movl %2, %%ds\n\t"
879 "movl %3, %%ebp\n\t"
880 "movzbl 0x1, %0\n\t"
881 "movzbl (%%ebp), %1\n\t"
882 "popl %%ds\n\t"
883 "popl %%ebp\n\t"
884 : "=r" (res), "=r" (res2)
885 : "r" (MK_SEL(1)), "r" (&tmp));
886 printf("DS[1] = %02x\n", res);
887 printf("SS[tmp] = %02x\n", res2);
e1d4294a
FB		 888
889 segoff.seg = MK_SEL(2);
890 segoff.offset = 0xabcdef12;
891 asm volatile("lfs %2, %0\n\t"
892 "movl %%fs, %1\n\t"
893 : "=r" (res), "=g" (res2)
894 : "m" (segoff));
895 printf("FS:reg = %04x:%08x\n", res2, res);
288426fe
FB		 896
897 TEST_LR("larw", "w", MK_SEL(2), 0x0100);
898 TEST_LR("larl", "", MK_SEL(2), 0x0100);
899 TEST_LR("lslw", "w", MK_SEL(2), 0);
900 TEST_LR("lsll", "", MK_SEL(2), 0);
901
902 TEST_LR("larw", "w", 0xfff8, 0);
903 TEST_LR("larl", "", 0xfff8, 0);
904 TEST_LR("lslw", "w", 0xfff8, 0);
905 TEST_LR("lsll", "", 0xfff8, 0);
6dbad63e 906}
55480af8 907
e5918247
FB		 908/* 16 bit code test */
909extern char code16_start, code16_end;
910extern char code16_func1;
911extern char code16_func2;
912extern char code16_func3;
a300e691 913
e5918247 914void test_code16(void)
1a9353d2 915{
e5918247
FB		 916 struct modify_ldt_ldt_s ldt;
917 int res, res2;
a300e691 918
e5918247
FB		 919 /* build a code segment */
920 ldt.entry_number = 1;
921 ldt.base_addr = (unsigned long)&code16_start;
922 ldt.limit = &code16_end - &code16_start;
923 ldt.seg_32bit = 0;
924 ldt.contents = MODIFY_LDT_CONTENTS_CODE;
925 ldt.read_exec_only = 0;
926 ldt.limit_in_pages = 0;
927 ldt.seg_not_present = 0;
928 ldt.useable = 1;
929 modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
a300e691 930
e5918247
FB		 931 /* call the first function */
932 asm volatile ("lcall %1, %2"
933 : "=a" (res)
934 : "i" (MK_SEL(1)), "i" (&code16_func1): "memory", "cc");
935 printf("func1() = 0x%08x\n", res);
936 asm volatile ("lcall %2, %3"
937 : "=a" (res), "=c" (res2)
938 : "i" (MK_SEL(1)), "i" (&code16_func2): "memory", "cc");
939 printf("func2() = 0x%08x spdec=%d\n", res, res2);
940 asm volatile ("lcall %1, %2"
941 : "=a" (res)
942 : "i" (MK_SEL(1)), "i" (&code16_func3): "memory", "cc");
943 printf("func3() = 0x%08x\n", res);
1a9353d2
FB		 944}
945
dd3587f3
FB		 946extern char func_lret32;
947extern char func_iret32;
948
e1d4294a
FB		 949void test_misc(void)
950{
951 char table[256];
952 int res, i;
953
954 for(i=0;i<256;i++) table[i] = 256 - i;
955 res = 0x12345678;
956 asm ("xlat" : "=a" (res) : "b" (table), "0" (res));
957 printf("xlat: EAX=%08x\n", res);
dd3587f3
FB		 958
959 asm volatile ("pushl %%cs ; call %1"
960 : "=a" (res)
961 : "m" (func_lret32): "memory", "cc");
962 printf("func_lret32=%x\n", res);
963
964 asm volatile ("pushfl ; pushl %%cs ; call %1"
965 : "=a" (res)
966 : "m" (func_iret32): "memory", "cc");
967 printf("func_iret32=%x\n", res);
968
969 /* specific popl test */
970 asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popl (%%esp) ; popl %0"
971 : "=g" (res));
972 printf("popl esp=%x\n", res);
e1d4294a
FB		 973}
974
975uint8_t str_buffer[4096];
976
977#define TEST_STRING1(OP, size, DF, REP)\
978{\
979 int esi, edi, eax, ecx, eflags;\
980\
981 esi = (long)(str_buffer + sizeof(str_buffer) / 2);\
982 edi = (long)(str_buffer + sizeof(str_buffer) / 2) + 16;\
983 eax = 0x12345678;\
984 ecx = 17;\
985\
986 asm volatile ("pushl $0\n\t"\
987 "popf\n\t"\
988 DF "\n\t"\
989 REP #OP size "\n\t"\
990 "cld\n\t"\
991 "pushf\n\t"\
992 "popl %4\n\t"\
993 : "=S" (esi), "=D" (edi), "=a" (eax), "=c" (ecx), "=g" (eflags)\
994 : "0" (esi), "1" (edi), "2" (eax), "3" (ecx));\
995 printf("%-10s ESI=%08x EDI=%08x EAX=%08x ECX=%08x EFL=%04x\n",\
996 REP #OP size, esi, edi, eax, ecx,\
997 eflags & (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));\
998}
999
1000#define TEST_STRING(OP, REP)\
1001 TEST_STRING1(OP, "b", "", REP);\
1002 TEST_STRING1(OP, "w", "", REP);\
1003 TEST_STRING1(OP, "l", "", REP);\
1004 TEST_STRING1(OP, "b", "std", REP);\
1005 TEST_STRING1(OP, "w", "std", REP);\
1006 TEST_STRING1(OP, "l", "std", REP)
1007
1008void test_string(void)
1009{
1010 int i;
1011 for(i = 0;i < sizeof(str_buffer); i++)
1012 str_buffer[i] = i + 0x56;
1013 TEST_STRING(stos, "");
1014 TEST_STRING(stos, "rep ");
1015 TEST_STRING(lods, ""); /* to verify stos */
1016 TEST_STRING(lods, "rep ");
1017 TEST_STRING(movs, "");
1018 TEST_STRING(movs, "rep ");
1019 TEST_STRING(lods, ""); /* to verify stos */
1020
1021 /* XXX: better tests */
1022 TEST_STRING(scas, "");
1023 TEST_STRING(scas, "repz ");
1024 TEST_STRING(scas, "repnz ");
1025 TEST_STRING(cmps, "");
1026 TEST_STRING(cmps, "repz ");
1027 TEST_STRING(cmps, "repnz ");
1028}
e5918247 1029
3a27ad0b
FB		 1030/* VM86 test */
1031
1032static inline void set_bit(uint8_t *a, unsigned int bit)
1033{
1034 a[bit / 8] |= (1 << (bit % 8));
1035}
1036
1037static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg)
1038{
1039 return (uint8_t *)((seg << 4) + (reg & 0xffff));
1040}
1041
1042static inline void pushw(struct vm86_regs *r, int val)
1043{
1044 r->esp = (r->esp & ~0xffff) | ((r->esp - 2) & 0xffff);
1045 *(uint16_t *)seg_to_linear(r->ss, r->esp) = val;
1046}
1047
1048#undef __syscall_return
1049#define __syscall_return(type, res) \
1050do { \
1051 return (type) (res); \
1052} while (0)
1053
1054_syscall2(int, vm86, int, func, struct vm86plus_struct *, v86)
1055
1056extern char vm86_code_start;
1057extern char vm86_code_end;
1058
1059#define VM86_CODE_CS 0x100
1060#define VM86_CODE_IP 0x100
1061
1062void test_vm86(void)
1063{
1064 struct vm86plus_struct ctx;
1065 struct vm86_regs *r;
1066 uint8_t *vm86_mem;
1067 int seg, ret;
1068
1069 vm86_mem = mmap((void *)0x00000000, 0x110000,
1070 PROT_WRITE | PROT_READ | PROT_EXEC,
1071 MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0);
1072 if (vm86_mem == MAP_FAILED) {
1073 printf("ERROR: could not map vm86 memory");
1074 return;
1075 }
1076 memset(&ctx, 0, sizeof(ctx));
1077
1078 /* init basic registers */
1079 r = &ctx.regs;
1080 r->eip = VM86_CODE_IP;
1081 r->esp = 0xfffe;
1082 seg = VM86_CODE_CS;
1083 r->cs = seg;
1084 r->ss = seg;
1085 r->ds = seg;
1086 r->es = seg;
1087 r->fs = seg;
1088 r->gs = seg;
1089 r->eflags = VIF_MASK;
1090
1091 /* move code to proper address. We use the same layout as a .com
1092 dos program. */
1093 memcpy(vm86_mem + (VM86_CODE_CS << 4) + VM86_CODE_IP,
1094 &vm86_code_start, &vm86_code_end - &vm86_code_start);
1095
1096 /* mark int 0x21 as being emulated */
1097 set_bit((uint8_t *)&ctx.int_revectored, 0x21);
1098
1099 for(;;) {
1100 ret = vm86(VM86_ENTER, &ctx);
1101 switch(VM86_TYPE(ret)) {
1102 case VM86_INTx:
1103 {
1104 int int_num, ah;
1105
1106 int_num = VM86_ARG(ret);
1107 if (int_num != 0x21)
1108 goto unknown_int;
1109 ah = (r->eax >> 8) & 0xff;
1110 switch(ah) {
1111 case 0x00: /* exit */
1112 goto the_end;
1113 case 0x02: /* write char */
1114 {
1115 uint8_t c = r->edx;
1116 putchar(c);
1117 }
1118 break;
1119 case 0x09: /* write string */
1120 {
1121 uint8_t c, *ptr;
1122 ptr = seg_to_linear(r->ds, r->edx);
1123 for(;;) {
1124 c = *ptr++;
1125 if (c == '$')
1126 break;
1127 putchar(c);
1128 }
1129 r->eax = (r->eax & ~0xff) | '$';
1130 }
1131 break;
1132 case 0xff: /* extension: write hex number in edx */
1133 printf("%08x\n", (int)r->edx);
1134 break;
1135 default:
1136 unknown_int:
1137 printf("unsupported int 0x%02x\n", int_num);
1138 goto the_end;
1139 }
1140 }
1141 break;
1142 case VM86_SIGNAL:
1143 /* a signal came, we just ignore that */
1144 break;
1145 case VM86_STI:
1146 break;
1147 default:
1148 printf("ERROR: unhandled vm86 return code (0x%x)\n", ret);
1149 goto the_end;
1150 }
1151 }
1152 the_end:
1153 printf("VM86 end\n");
1154 munmap(vm86_mem, 0x110000);
1155}
1156
1157/* exception tests */
1158#ifndef REG_EAX
1159#define REG_EAX EAX
1160#define REG_EBX EBX
1161#define REG_ECX ECX
1162#define REG_EDX EDX
1163#define REG_ESI ESI
1164#define REG_EDI EDI
1165#define REG_EBP EBP
1166#define REG_ESP ESP
1167#define REG_EIP EIP
1168#define REG_EFL EFL
1169#define REG_TRAPNO TRAPNO
1170#define REG_ERR ERR
1171#endif
1172
1173jmp_buf jmp_env;
3a27ad0b
FB		 1174int v1;
1175int tab[2];
1176
1177void sig_handler(int sig, siginfo_t *info, void *puc)
1178{
1179 struct ucontext *uc = puc;
1180
1181 printf("si_signo=%d si_errno=%d si_code=%d",
1182 info->si_signo, info->si_errno, info->si_code);
e3b32540
FB		 1183 printf(" si_addr=0x%08lx",
1184 (unsigned long)info->si_addr);
3a27ad0b
FB		 1185 printf("\n");
1186
1187 printf("trapno=0x%02x err=0x%08x",
1188 uc->uc_mcontext.gregs[REG_TRAPNO],
1189 uc->uc_mcontext.gregs[REG_ERR]);
e3b32540 1190 printf(" EIP=0x%08x", uc->uc_mcontext.gregs[REG_EIP]);
3a27ad0b
FB		 1191 printf("\n");
1192 longjmp(jmp_env, 1);
1193}
1194
1195void test_exceptions(void)
1196{
e3b32540 1197 struct modify_ldt_ldt_s ldt;
3a27ad0b
FB		 1198 struct sigaction act;
1199 volatile int val;
1200
1201 act.sa_sigaction = sig_handler;
1202 sigemptyset(&act.sa_mask);
1203 act.sa_flags = SA_SIGINFO;
1204 sigaction(SIGFPE, &act, NULL);
1205 sigaction(SIGILL, &act, NULL);
1206 sigaction(SIGSEGV, &act, NULL);
e3b32540 1207 sigaction(SIGBUS, &act, NULL);
3a27ad0b
FB		 1208 sigaction(SIGTRAP, &act, NULL);
1209
1210 /* test division by zero reporting */
e3b32540 1211 printf("DIVZ exception:\n");
3a27ad0b
FB		 1212 if (setjmp(jmp_env) == 0) {
1213 /* now divide by zero */
1214 v1 = 0;
1215 v1 = 2 / v1;
1216 }
1217
e3b32540 1218 printf("BOUND exception:\n");
3a27ad0b
FB		 1219 if (setjmp(jmp_env) == 0) {
1220 /* bound exception */
1221 tab[0] = 1;
1222 tab[1] = 10;
1223 asm volatile ("bound %0, %1" : : "r" (11), "m" (tab));
1224 }
1225
e3b32540
FB		 1226 printf("segment exceptions:\n");
1227 if (setjmp(jmp_env) == 0) {
1228 /* load an invalid segment */
1229 asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 1));
1230 }
1231 if (setjmp(jmp_env) == 0) {
1232 /* null data segment is valid */
1233 asm volatile ("movl %0, %%fs" : : "r" (3));
1234 /* null stack segment */
1235 asm volatile ("movl %0, %%ss" : : "r" (3));
1236 }
1237
1238 ldt.entry_number = 1;
1239 ldt.base_addr = (unsigned long)&seg_data1;
1240 ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12;
1241 ldt.seg_32bit = 1;
1242 ldt.contents = MODIFY_LDT_CONTENTS_DATA;
1243 ldt.read_exec_only = 0;
1244 ldt.limit_in_pages = 1;
1245 ldt.seg_not_present = 1;
1246 ldt.useable = 1;
1247 modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
1248
1249 if (setjmp(jmp_env) == 0) {
1250 /* segment not present */
1251 asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1)));
1252 }
1253
3a27ad0b 1254 /* test SEGV reporting */
e3b32540 1255 printf("PF exception:\n");
3a27ad0b 1256 if (setjmp(jmp_env) == 0) {
e3b32540 1257 val = 1;
ede28208
FB		 1258 /* we add a nop to test a weird PC retrieval case */
1259 asm volatile ("nop");
3a27ad0b
FB		 1260 /* now store in an invalid address */
1261 *(char *)0x1234 = 1;
1262 }
1263
1264 /* test SEGV reporting */
e3b32540 1265 printf("PF exception:\n");
3a27ad0b 1266 if (setjmp(jmp_env) == 0) {
e3b32540 1267 val = 1;
3a27ad0b
FB		 1268 /* read from an invalid address */
1269 v1 = *(char *)0x1234;
1270 }
1271
3a27ad0b
FB		 1272 /* test illegal instruction reporting */
1273 printf("UD2 exception:\n");
1274 if (setjmp(jmp_env) == 0) {
1275 /* now execute an invalid instruction */
1276 asm volatile("ud2");
1277 }
1278
1279 printf("INT exception:\n");
1280 if (setjmp(jmp_env) == 0) {
1281 asm volatile ("int $0xfd");
1282 }
e3b32540
FB		 1283 if (setjmp(jmp_env) == 0) {
1284 asm volatile ("int $0x01");
1285 }
1286 if (setjmp(jmp_env) == 0) {
1287 asm volatile (".byte 0xcd, 0x03");
1288 }
1289 if (setjmp(jmp_env) == 0) {
1290 asm volatile ("int $0x04");
1291 }
1292 if (setjmp(jmp_env) == 0) {
1293 asm volatile ("int $0x05");
1294 }
3a27ad0b
FB		 1295
1296 printf("INT3 exception:\n");
1297 if (setjmp(jmp_env) == 0) {
1298 asm volatile ("int3");
1299 }
1300
1301 printf("CLI exception:\n");
1302 if (setjmp(jmp_env) == 0) {
1303 asm volatile ("cli");
1304 }
1305
1306 printf("STI exception:\n");
1307 if (setjmp(jmp_env) == 0) {
1308 asm volatile ("cli");
1309 }
1310
1311 printf("INTO exception:\n");
1312 if (setjmp(jmp_env) == 0) {
1313 /* overflow exception */
1314 asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff));
1315 }
1316
1317 printf("OUTB exception:\n");
1318 if (setjmp(jmp_env) == 0) {
1319 asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0));
1320 }
1321
1322 printf("INB exception:\n");
1323 if (setjmp(jmp_env) == 0) {
1324 asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321));
1325 }
1326
1327 printf("REP OUTSB exception:\n");
1328 if (setjmp(jmp_env) == 0) {
1329 asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1));
1330 }
1331
1332 printf("REP INSB exception:\n");
1333 if (setjmp(jmp_env) == 0) {
1334 asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1));
1335 }
1336
1337 printf("HLT exception:\n");
1338 if (setjmp(jmp_env) == 0) {
1339 asm volatile ("hlt");
1340 }
1341
1342 printf("single step exception:\n");
1343 val = 0;
1344 if (setjmp(jmp_env) == 0) {
1345 asm volatile ("pushf\n"
1346 "orl $0x00100, (%%esp)\n"
1347 "popf\n"
1348 "movl $0xabcd, %0\n"
1349 "movl $0x0, %0\n" : "=m" (val) : : "cc", "memory");
1350 }
1351 printf("val=0x%x\n", val);
1352}
1353
1354/* self modifying code test */
1355uint8_t code[] = {
1356 0xb8, 0x1, 0x00, 0x00, 0x00, /* movl $1, %eax */
1357 0xc3, /* ret */
1358};
1359
d1fe2b24
FB		 1360typedef int FuncType(void);
1361
3a27ad0b
FB		 1362void test_self_modifying_code(void)
1363{
d1fe2b24 1364 int i;
3a27ad0b 1365
3a27ad0b 1366 printf("self modifying code:\n");
d1fe2b24
FB		 1367 printf("func1 = 0x%x\n", ((FuncType *)code)());
1368 for(i = 2; i <= 4; i++) {
1369 code[1] = i;
1370 printf("func%d = 0x%x\n", i, ((FuncType *)code)());
1371 }
3a27ad0b
FB		 1372}
1373
4d1135e4
FB		 1374static void *call_end __init_call = NULL;
1375
1376int main(int argc, char **argv)
1377{
1378 void **ptr;
1379 void (*func)(void);
4b74fe1f 1380
4d1135e4
FB		 1381 ptr = &call_start + 1;
1382 while (*ptr != NULL) {
1383 func = *ptr++;
1384 func();
1385 }
9d8e9c09 1386 test_bsx();
d57c4e01 1387 test_mul();
4d1135e4 1388 test_jcc();
9d8e9c09 1389 test_floats();
55480af8 1390 test_bcd();
1a9353d2 1391 test_xchg();
e1d4294a
FB		 1392 test_string();
1393 test_misc();
6dbad63e
FB		 1394 test_lea();
1395 test_segs();
e5918247 1396 test_code16();
3a27ad0b
FB		 1397 test_vm86();
1398 test_exceptions();
1399 test_self_modifying_code();
4d1135e4
FB		 1400 return 0;
1401}
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