sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 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, write to the Free Software |
| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | #define _GNU_SOURCE |
| 21 | #include <stdlib.h> |
| 22 | #include <stdio.h> |
| 23 | #include <string.h> |
| 24 | #include <inttypes.h> |
| 25 | #include <math.h> |
| 26 | #include <signal.h> |
| 27 | #include <setjmp.h> |
| 28 | #include <errno.h> |
| 29 | #include <sys/ucontext.h> |
| 30 | #include <sys/mman.h> |
| 31 | #include <asm/vm86.h> |
| 32 | |
sewardj | cb59aeb | 2004-10-21 09:20:46 +0000 | [diff] [blame] | 33 | /* Setting this to 1 creates a very comprehensive test of |
| 34 | integer condition codes. */ |
sewardj | 0849772 | 2006-12-17 14:24:05 +0000 | [diff] [blame] | 35 | #define TEST_INTEGER_VERBOSE 1 |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 36 | |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 37 | |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 38 | //#define LINUX_VM86_IOPL_FIX |
| 39 | //#define TEST_P4_FLAGS |
| 40 | |
| 41 | #define xglue(x, y) x ## y |
| 42 | #define glue(x, y) xglue(x, y) |
| 43 | #define stringify(s) tostring(s) |
| 44 | #define tostring(s) #s |
| 45 | |
| 46 | #define CC_C 0x0001 |
| 47 | #define CC_P 0x0004 |
| 48 | #define CC_A 0x0010 |
| 49 | #define CC_Z 0x0040 |
| 50 | #define CC_S 0x0080 |
| 51 | #define CC_O 0x0800 |
| 52 | |
| 53 | #define __init_call __attribute__ ((unused,__section__ (".initcall.init"))) |
| 54 | |
| 55 | static void *call_start __init_call = NULL; |
| 56 | |
| 57 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A) |
| 58 | |
| 59 | #define OP add |
| 60 | #include "test-i386.h" |
| 61 | |
| 62 | #define OP sub |
| 63 | #include "test-i386.h" |
| 64 | |
| 65 | #define OP xor |
| 66 | #include "test-i386.h" |
| 67 | |
| 68 | #define OP and |
| 69 | #include "test-i386.h" |
| 70 | |
| 71 | #define OP or |
| 72 | #include "test-i386.h" |
| 73 | |
| 74 | #define OP cmp |
| 75 | #include "test-i386.h" |
| 76 | |
| 77 | #define OP adc |
| 78 | #define OP_CC |
| 79 | #include "test-i386.h" |
| 80 | |
| 81 | #define OP sbb |
| 82 | #define OP_CC |
| 83 | #include "test-i386.h" |
| 84 | |
| 85 | #define OP inc |
| 86 | #define OP_CC |
| 87 | #define OP1 |
| 88 | #include "test-i386.h" |
| 89 | |
| 90 | #define OP dec |
| 91 | #define OP_CC |
| 92 | #define OP1 |
| 93 | #include "test-i386.h" |
| 94 | |
| 95 | #define OP neg |
| 96 | #define OP_CC |
| 97 | #define OP1 |
| 98 | #include "test-i386.h" |
| 99 | |
| 100 | #define OP not |
| 101 | #define OP_CC |
| 102 | #define OP1 |
| 103 | #include "test-i386.h" |
| 104 | |
| 105 | #undef CC_MASK |
| 106 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O) |
| 107 | |
| 108 | #define OP shl |
| 109 | #include "test-i386-shift.h" |
| 110 | |
| 111 | #define OP shr |
| 112 | #include "test-i386-shift.h" |
| 113 | |
| 114 | #define OP sar |
| 115 | #include "test-i386-shift.h" |
| 116 | |
| 117 | #define OP rol |
| 118 | #include "test-i386-shift.h" |
| 119 | |
| 120 | #define OP ror |
| 121 | #include "test-i386-shift.h" |
| 122 | |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 123 | #define OP rcr |
| 124 | #define OP_CC |
| 125 | #include "test-i386-shift.h" |
| 126 | |
| 127 | #define OP rcl |
| 128 | #define OP_CC |
| 129 | #include "test-i386-shift.h" |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 130 | |
| 131 | #define OP shld |
| 132 | #define OP_SHIFTD |
| 133 | #define OP_NOBYTE |
| 134 | #include "test-i386-shift.h" |
| 135 | |
| 136 | #define OP shrd |
| 137 | #define OP_SHIFTD |
| 138 | #define OP_NOBYTE |
| 139 | #include "test-i386-shift.h" |
| 140 | |
| 141 | |
| 142 | /* XXX: should be more precise ? */ |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 143 | #undef CC_MASK |
| 144 | #define CC_MASK (CC_C) |
| 145 | |
| 146 | #define OP bt |
| 147 | #define OP_NOBYTE |
| 148 | #include "test-i386-shift.h" |
| 149 | |
| 150 | #define OP bts |
| 151 | #define OP_NOBYTE |
| 152 | #include "test-i386-shift.h" |
| 153 | |
| 154 | #define OP btr |
| 155 | #define OP_NOBYTE |
| 156 | #include "test-i386-shift.h" |
| 157 | |
| 158 | #define OP btc |
| 159 | #define OP_NOBYTE |
| 160 | #include "test-i386-shift.h" |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 161 | |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 162 | |
| 163 | /* lea test (modrm support) */ |
| 164 | #define TEST_LEA(STR)\ |
| 165 | {\ |
| 166 | asm("leal " STR ", %0"\ |
| 167 | : "=r" (res)\ |
| 168 | : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\ |
| 169 | printf("lea %s = %08x\n", STR, res);\ |
| 170 | } |
| 171 | |
| 172 | #define TEST_LEA16(STR)\ |
| 173 | {\ |
| 174 | asm(".code16 ; .byte 0x67 ; leal " STR ", %0 ; .code32"\ |
| 175 | : "=wq" (res)\ |
| 176 | : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\ |
| 177 | printf("lea %s = %08x\n", STR, res);\ |
| 178 | } |
| 179 | |
| 180 | |
| 181 | void test_lea(void) |
| 182 | { |
| 183 | int eax, ebx, ecx, edx, esi, edi, res; |
| 184 | eax = 0x0001; |
| 185 | ebx = 0x0002; |
| 186 | ecx = 0x0004; |
| 187 | edx = 0x0008; |
| 188 | esi = 0x0010; |
| 189 | edi = 0x0020; |
| 190 | |
| 191 | TEST_LEA("0x4000"); |
| 192 | |
| 193 | TEST_LEA("(%%eax)"); |
| 194 | TEST_LEA("(%%ebx)"); |
| 195 | TEST_LEA("(%%ecx)"); |
| 196 | TEST_LEA("(%%edx)"); |
| 197 | TEST_LEA("(%%esi)"); |
| 198 | TEST_LEA("(%%edi)"); |
| 199 | |
| 200 | TEST_LEA("0x40(%%eax)"); |
| 201 | TEST_LEA("0x40(%%ebx)"); |
| 202 | TEST_LEA("0x40(%%ecx)"); |
| 203 | TEST_LEA("0x40(%%edx)"); |
| 204 | TEST_LEA("0x40(%%esi)"); |
| 205 | TEST_LEA("0x40(%%edi)"); |
| 206 | |
| 207 | TEST_LEA("0x4000(%%eax)"); |
| 208 | TEST_LEA("0x4000(%%ebx)"); |
| 209 | TEST_LEA("0x4000(%%ecx)"); |
| 210 | TEST_LEA("0x4000(%%edx)"); |
| 211 | TEST_LEA("0x4000(%%esi)"); |
| 212 | TEST_LEA("0x4000(%%edi)"); |
| 213 | |
| 214 | TEST_LEA("(%%eax, %%ecx)"); |
| 215 | TEST_LEA("(%%ebx, %%edx)"); |
| 216 | TEST_LEA("(%%ecx, %%ecx)"); |
| 217 | TEST_LEA("(%%edx, %%ecx)"); |
| 218 | TEST_LEA("(%%esi, %%ecx)"); |
| 219 | TEST_LEA("(%%edi, %%ecx)"); |
| 220 | |
| 221 | TEST_LEA("0x40(%%eax, %%ecx)"); |
| 222 | TEST_LEA("0x4000(%%ebx, %%edx)"); |
| 223 | |
| 224 | TEST_LEA("(%%ecx, %%ecx, 2)"); |
| 225 | TEST_LEA("(%%edx, %%ecx, 4)"); |
| 226 | TEST_LEA("(%%esi, %%ecx, 8)"); |
| 227 | |
| 228 | TEST_LEA("(,%%eax, 2)"); |
| 229 | TEST_LEA("(,%%ebx, 4)"); |
| 230 | TEST_LEA("(,%%ecx, 8)"); |
| 231 | |
| 232 | TEST_LEA("0x40(,%%eax, 2)"); |
| 233 | TEST_LEA("0x40(,%%ebx, 4)"); |
| 234 | TEST_LEA("0x40(,%%ecx, 8)"); |
| 235 | |
| 236 | |
| 237 | TEST_LEA("-10(%%ecx, %%ecx, 2)"); |
| 238 | TEST_LEA("-10(%%edx, %%ecx, 4)"); |
| 239 | TEST_LEA("-10(%%esi, %%ecx, 8)"); |
| 240 | |
| 241 | TEST_LEA("0x4000(%%ecx, %%ecx, 2)"); |
| 242 | TEST_LEA("0x4000(%%edx, %%ecx, 4)"); |
| 243 | TEST_LEA("0x4000(%%esi, %%ecx, 8)"); |
| 244 | } |
| 245 | |
| 246 | #define TEST_JCC(JCC, v1, v2)\ |
| 247 | {\ |
| 248 | int res;\ |
| 249 | asm("movl $1, %0\n\t"\ |
| 250 | "cmpl %2, %1\n\t"\ |
| 251 | "j" JCC " 1f\n\t"\ |
| 252 | "movl $0, %0\n\t"\ |
| 253 | "1:\n\t"\ |
| 254 | : "=r" (res)\ |
| 255 | : "r" (v1), "r" (v2));\ |
| 256 | printf("%-10s %d\n", "j" JCC, res);\ |
| 257 | \ |
| 258 | asm("movl $0, %0\n\t"\ |
| 259 | "cmpl %2, %1\n\t"\ |
| 260 | "set" JCC " %b0\n\t"\ |
| 261 | : "=r" (res)\ |
| 262 | : "r" (v1), "r" (v2));\ |
| 263 | printf("%-10s %d\n", "set" JCC, res);\ |
sewardj | 0849772 | 2006-12-17 14:24:05 +0000 | [diff] [blame] | 264 | { int one = 1; \ |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 265 | asm("movl $0x12345678, %0\n\t"\ |
| 266 | "cmpl %2, %1\n\t"\ |
| 267 | "cmov" JCC "l %3, %0\n\t"\ |
| 268 | : "=r" (res)\ |
sewardj | 0849772 | 2006-12-17 14:24:05 +0000 | [diff] [blame] | 269 | : "r" (v1), "r" (v2), "m" (one));\ |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 270 | printf("%-10s R=0x%08x\n", "cmov" JCC "l", res);\ |
| 271 | asm("movl $0x12345678, %0\n\t"\ |
| 272 | "cmpl %2, %1\n\t"\ |
| 273 | "cmov" JCC "w %w3, %w0\n\t"\ |
| 274 | : "=r" (res)\ |
| 275 | : "r" (v1), "r" (v2), "r" (1));\ |
| 276 | printf("%-10s R=0x%08x\n", "cmov" JCC "w", res);\ |
| 277 | } \ |
| 278 | } |
| 279 | |
| 280 | /* various jump tests */ |
| 281 | void test_jcc(void) |
| 282 | { |
| 283 | TEST_JCC("ne", 1, 1); |
| 284 | TEST_JCC("ne", 1, 0); |
| 285 | |
| 286 | TEST_JCC("e", 1, 1); |
| 287 | TEST_JCC("e", 1, 0); |
| 288 | |
| 289 | TEST_JCC("l", 1, 1); |
| 290 | TEST_JCC("l", 1, 0); |
| 291 | TEST_JCC("l", 1, -1); |
| 292 | |
| 293 | TEST_JCC("le", 1, 1); |
| 294 | TEST_JCC("le", 1, 0); |
| 295 | TEST_JCC("le", 1, -1); |
| 296 | |
| 297 | TEST_JCC("ge", 1, 1); |
| 298 | TEST_JCC("ge", 1, 0); |
| 299 | TEST_JCC("ge", -1, 1); |
| 300 | |
| 301 | TEST_JCC("g", 1, 1); |
| 302 | TEST_JCC("g", 1, 0); |
| 303 | TEST_JCC("g", 1, -1); |
| 304 | |
| 305 | TEST_JCC("b", 1, 1); |
| 306 | TEST_JCC("b", 1, 0); |
| 307 | TEST_JCC("b", 1, -1); |
| 308 | |
| 309 | TEST_JCC("be", 1, 1); |
| 310 | TEST_JCC("be", 1, 0); |
| 311 | TEST_JCC("be", 1, -1); |
| 312 | |
| 313 | TEST_JCC("ae", 1, 1); |
| 314 | TEST_JCC("ae", 1, 0); |
| 315 | TEST_JCC("ae", 1, -1); |
| 316 | |
| 317 | TEST_JCC("a", 1, 1); |
| 318 | TEST_JCC("a", 1, 0); |
| 319 | TEST_JCC("a", 1, -1); |
| 320 | |
| 321 | |
| 322 | TEST_JCC("p", 1, 1); |
| 323 | TEST_JCC("p", 1, 0); |
| 324 | |
| 325 | TEST_JCC("np", 1, 1); |
| 326 | TEST_JCC("np", 1, 0); |
| 327 | |
| 328 | TEST_JCC("o", 0x7fffffff, 0); |
| 329 | TEST_JCC("o", 0x7fffffff, -1); |
| 330 | |
| 331 | TEST_JCC("no", 0x7fffffff, 0); |
| 332 | TEST_JCC("no", 0x7fffffff, -1); |
| 333 | |
| 334 | TEST_JCC("s", 0, 1); |
| 335 | TEST_JCC("s", 0, -1); |
| 336 | TEST_JCC("s", 0, 0); |
| 337 | |
| 338 | TEST_JCC("ns", 0, 1); |
| 339 | TEST_JCC("ns", 0, -1); |
| 340 | TEST_JCC("ns", 0, 0); |
| 341 | } |
| 342 | |
| 343 | #undef CC_MASK |
| 344 | #ifdef TEST_P4_FLAGS |
| 345 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A) |
| 346 | #else |
| 347 | #define CC_MASK (CC_O | CC_C) |
| 348 | #endif |
| 349 | |
| 350 | #define OP mul |
| 351 | #include "test-i386-muldiv.h" |
| 352 | |
| 353 | #define OP imul |
| 354 | #include "test-i386-muldiv.h" |
| 355 | |
| 356 | void test_imulw2(int op0, int op1) |
| 357 | { |
| 358 | int res, s1, s0, flags; |
| 359 | s0 = op0; |
| 360 | s1 = op1; |
| 361 | res = s0; |
| 362 | flags = 0; |
| 363 | asm ("push %4\n\t" |
| 364 | "popf\n\t" |
| 365 | "imulw %w2, %w0\n\t" |
| 366 | "pushf\n\t" |
| 367 | "popl %1\n\t" |
| 368 | : "=q" (res), "=g" (flags) |
| 369 | : "q" (s1), "0" (res), "1" (flags)); |
| 370 | printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n", |
| 371 | "imulw", s0, s1, res, flags & CC_MASK); |
| 372 | } |
| 373 | |
| 374 | void test_imull2(int op0, int op1) |
| 375 | { |
| 376 | int res, s1, s0, flags; |
| 377 | s0 = op0; |
| 378 | s1 = op1; |
| 379 | res = s0; |
| 380 | flags = 0; |
| 381 | asm ("push %4\n\t" |
| 382 | "popf\n\t" |
| 383 | "imull %2, %0\n\t" |
| 384 | "pushf\n\t" |
| 385 | "popl %1\n\t" |
| 386 | : "=q" (res), "=g" (flags) |
| 387 | : "q" (s1), "0" (res), "1" (flags)); |
| 388 | printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n", |
| 389 | "imull", s0, s1, res, flags & CC_MASK); |
| 390 | } |
| 391 | |
| 392 | #define TEST_IMUL_IM(size, size1, op0, op1)\ |
| 393 | {\ |
| 394 | int res, flags;\ |
| 395 | flags = 0;\ |
| 396 | res = 0;\ |
| 397 | asm ("push %3\n\t"\ |
| 398 | "popf\n\t"\ |
| 399 | "imul" size " $" #op0 ", %" size1 "2, %" size1 "0\n\t" \ |
| 400 | "pushf\n\t"\ |
| 401 | "popl %1\n\t"\ |
| 402 | : "=r" (res), "=g" (flags)\ |
| 403 | : "r" (op1), "1" (flags), "0" (res));\ |
| 404 | printf("%-10s A=%08x B=%08x R=%08x CC=%04x\n",\ |
| 405 | "imul" size, op0, op1, res, flags & CC_MASK);\ |
| 406 | } |
| 407 | |
| 408 | |
| 409 | #undef CC_MASK |
| 410 | #define CC_MASK (0) |
| 411 | |
| 412 | #define OP div |
| 413 | #include "test-i386-muldiv.h" |
| 414 | |
| 415 | #define OP idiv |
| 416 | #include "test-i386-muldiv.h" |
| 417 | |
| 418 | void test_mul(void) |
| 419 | { |
| 420 | test_imulb(0x1234561d, 4); |
| 421 | test_imulb(3, -4); |
| 422 | test_imulb(0x80, 0x80); |
| 423 | test_imulb(0x10, 0x10); |
| 424 | |
| 425 | test_imulw(0, 0, 0); |
| 426 | test_imulw(0, 0xFF, 0xFF); |
| 427 | test_imulw(0, 0xFF, 0x100); |
| 428 | test_imulw(0, 0x1234001d, 45); |
| 429 | test_imulw(0, 23, -45); |
| 430 | test_imulw(0, 0x8000, 0x8000); |
| 431 | test_imulw(0, 0x100, 0x100); |
| 432 | |
| 433 | test_imull(0, 0, 0); |
| 434 | test_imull(0, 0xFFFF, 0xFFFF); |
| 435 | test_imull(0, 0xFFFF, 0x10000); |
| 436 | test_imull(0, 0x1234001d, 45); |
| 437 | test_imull(0, 23, -45); |
| 438 | test_imull(0, 0x80000000, 0x80000000); |
| 439 | test_imull(0, 0x10000, 0x10000); |
| 440 | |
| 441 | test_mulb(0x1234561d, 4); |
| 442 | test_mulb(3, -4); |
| 443 | test_mulb(0x80, 0x80); |
| 444 | test_mulb(0x10, 0x10); |
| 445 | |
| 446 | test_mulw(0, 0x1234001d, 45); |
| 447 | test_mulw(0, 23, -45); |
| 448 | test_mulw(0, 0x8000, 0x8000); |
| 449 | test_mulw(0, 0x100, 0x100); |
| 450 | |
| 451 | test_mull(0, 0x1234001d, 45); |
| 452 | test_mull(0, 23, -45); |
| 453 | test_mull(0, 0x80000000, 0x80000000); |
| 454 | test_mull(0, 0x10000, 0x10000); |
| 455 | |
| 456 | test_imulw2(0x1234001d, 45); |
| 457 | test_imulw2(23, -45); |
| 458 | test_imulw2(0x8000, 0x8000); |
| 459 | test_imulw2(0x100, 0x100); |
| 460 | |
| 461 | test_imull2(0x1234001d, 45); |
| 462 | test_imull2(23, -45); |
| 463 | test_imull2(0x80000000, 0x80000000); |
| 464 | test_imull2(0x10000, 0x10000); |
| 465 | |
| 466 | TEST_IMUL_IM("w", "w", 45, 0x1234); |
| 467 | TEST_IMUL_IM("w", "w", -45, 23); |
| 468 | TEST_IMUL_IM("w", "w", 0x8000, 0x80000000); |
| 469 | TEST_IMUL_IM("w", "w", 0x7fff, 0x1000); |
| 470 | |
| 471 | TEST_IMUL_IM("l", "", 45, 0x1234); |
| 472 | TEST_IMUL_IM("l", "", -45, 23); |
| 473 | TEST_IMUL_IM("l", "", 0x8000, 0x80000000); |
| 474 | TEST_IMUL_IM("l", "", 0x7fff, 0x1000); |
sewardj | 04e86f0 | 2004-10-16 11:36:34 +0000 | [diff] [blame] | 475 | |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 476 | test_idivb(0x12341678, 0x127e); |
| 477 | test_idivb(0x43210123, -5); |
| 478 | test_idivb(0x12340004, -1); |
| 479 | |
| 480 | test_idivw(0, 0x12345678, 12347); |
| 481 | test_idivw(0, -23223, -45); |
| 482 | test_idivw(0, 0x12348000, -1); |
| 483 | test_idivw(0x12343, 0x12345678, 0x81238567); |
sewardj | 04e86f0 | 2004-10-16 11:36:34 +0000 | [diff] [blame] | 484 | |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 485 | test_idivl(0, 0x12345678, 12347); |
| 486 | test_idivl(0, -233223, -45); |
| 487 | test_idivl(0, 0x80000000, -1); |
| 488 | test_idivl(0x12343, 0x12345678, 0x81234567); |
sewardj | 04e86f0 | 2004-10-16 11:36:34 +0000 | [diff] [blame] | 489 | |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 490 | test_divb(0x12341678, 0x127e); |
| 491 | test_divb(0x43210123, -5); |
| 492 | test_divb(0x12340004, -1); |
| 493 | |
| 494 | test_divw(0, 0x12345678, 12347); |
| 495 | test_divw(0, -23223, -45); |
| 496 | test_divw(0, 0x12348000, -1); |
| 497 | test_divw(0x12343, 0x12345678, 0x81238567); |
sewardj | 04e86f0 | 2004-10-16 11:36:34 +0000 | [diff] [blame] | 498 | |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 499 | test_divl(0, 0x12345678, 12347); |
| 500 | test_divl(0, -233223, -45); |
| 501 | test_divl(0, 0x80000000, -1); |
| 502 | test_divl(0x12343, 0x12345678, 0x81234567); |
| 503 | } |
| 504 | |
| 505 | #define TEST_BSX(op, size, op0)\ |
| 506 | {\ |
| 507 | int res, val, resz;\ |
| 508 | val = op0;\ |
sewardj | 0849772 | 2006-12-17 14:24:05 +0000 | [diff] [blame] | 509 | asm("xorl %1, %1\n\t"\ |
| 510 | "movl $0x12345678, %0\n\t"\ |
| 511 | #op " %" size "2, %" size "0\n\t" \ |
| 512 | "setz %b1" \ |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 513 | : "=r" (res), "=q" (resz)\ |
sewardj | 0849772 | 2006-12-17 14:24:05 +0000 | [diff] [blame] | 514 | : "r" (val));\ |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 515 | printf("%-10s A=%08x R=%08x %d\n", #op, val, res, resz);\ |
| 516 | } |
| 517 | |
| 518 | void test_bsx(void) |
| 519 | { |
| 520 | TEST_BSX(bsrw, "w", 0); |
| 521 | TEST_BSX(bsrw, "w", 0x12340128); |
| 522 | TEST_BSX(bsrl, "", 0); |
| 523 | TEST_BSX(bsrl, "", 0x00340128); |
| 524 | TEST_BSX(bsfw, "w", 0); |
| 525 | TEST_BSX(bsfw, "w", 0x12340128); |
| 526 | TEST_BSX(bsfl, "", 0); |
| 527 | TEST_BSX(bsfl, "", 0x00340128); |
| 528 | } |
| 529 | |
| 530 | /**********************************************/ |
sewardj | cb59aeb | 2004-10-21 09:20:46 +0000 | [diff] [blame] | 531 | |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 532 | void test_fops(double a, double b) |
| 533 | { |
| 534 | printf("a=%f b=%f a+b=%f\n", a, b, a + b); |
| 535 | printf("a=%f b=%f a-b=%f\n", a, b, a - b); |
| 536 | printf("a=%f b=%f a*b=%f\n", a, b, a * b); |
| 537 | printf("a=%f b=%f a/b=%f\n", a, b, a / b); |
| 538 | printf("a=%f b=%f fmod(a, b)=%f\n", a, b, fmod(a, b)); |
| 539 | printf("a=%f sqrt(a)=%f\n", a, sqrt(a)); |
| 540 | printf("a=%f sin(a)=%f\n", a, sin(a)); |
| 541 | printf("a=%f cos(a)=%f\n", a, cos(a)); |
sewardj | cb59aeb | 2004-10-21 09:20:46 +0000 | [diff] [blame] | 542 | printf("a=%f tan(a)=%f\n", a, tan(a)); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 543 | printf("a=%f log(a)=%f\n", a, log(a)); |
| 544 | printf("a=%f exp(a)=%f\n", a, exp(a)); |
| 545 | printf("a=%f b=%f atan2(a, b)=%f\n", a, b, atan2(a, b)); |
| 546 | /* just to test some op combining */ |
sewardj | cb59aeb | 2004-10-21 09:20:46 +0000 | [diff] [blame] | 547 | printf("a=%f asin(sin(a))=%f\n", a, asin(sin(a))); |
| 548 | printf("a=%f acos(cos(a))=%f\n", a, acos(cos(a))); |
| 549 | printf("a=%f atan(tan(a))=%f\n", a, atan(tan(a))); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 550 | } |
| 551 | |
| 552 | void test_fcmp(double a, double b) |
| 553 | { |
| 554 | printf("(%f<%f)=%d\n", |
| 555 | a, b, a < b); |
| 556 | printf("(%f<=%f)=%d\n", |
| 557 | a, b, a <= b); |
| 558 | printf("(%f==%f)=%d\n", |
| 559 | a, b, a == b); |
| 560 | printf("(%f>%f)=%d\n", |
| 561 | a, b, a > b); |
| 562 | printf("(%f<=%f)=%d\n", |
| 563 | a, b, a >= b); |
sewardj | cb59aeb | 2004-10-21 09:20:46 +0000 | [diff] [blame] | 564 | { |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 565 | unsigned int eflags; |
| 566 | /* test f(u)comi instruction */ |
| 567 | asm("fcomi %2, %1\n" |
| 568 | "pushf\n" |
| 569 | "pop %0\n" |
| 570 | : "=r" (eflags) |
| 571 | : "t" (a), "u" (b)); |
| 572 | printf("fcomi(%f %f)=%08x\n", a, b, eflags & (CC_Z | CC_P | CC_C)); |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | void test_fcvt(double a) |
| 577 | { |
| 578 | float fa; |
| 579 | long double la; |
| 580 | int16_t fpuc; |
| 581 | int i; |
| 582 | int64_t lla; |
| 583 | int ia; |
| 584 | int16_t wa; |
| 585 | double ra; |
| 586 | |
| 587 | fa = a; |
| 588 | la = a; |
| 589 | printf("(float)%f = %f\n", a, fa); |
| 590 | printf("(long double)%f = %Lf\n", a, la); |
| 591 | printf("a=%016Lx\n", *(long long *)&a); |
| 592 | printf("la=%016Lx %04x\n", *(long long *)&la, |
| 593 | *(unsigned short *)((char *)(&la) + 8)); |
| 594 | |
| 595 | /* test all roundings */ |
| 596 | asm volatile ("fstcw %0" : "=m" (fpuc)); |
| 597 | for(i=0;i<4;i++) { |
sewardj | 0849772 | 2006-12-17 14:24:05 +0000 | [diff] [blame] | 598 | int16_t tmp = (fpuc & ~0x0c00) | (i << 10); |
| 599 | asm volatile ("fldcw %0" : : "m" (tmp)); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 600 | asm volatile ("fist %0" : "=m" (wa) : "t" (a)); |
| 601 | asm volatile ("fistl %0" : "=m" (ia) : "t" (a)); |
| 602 | asm volatile ("fistpll %0" : "=m" (lla) : "t" (a) : "st"); |
| 603 | asm volatile ("frndint ; fstl %0" : "=m" (ra) : "t" (a)); |
| 604 | asm volatile ("fldcw %0" : : "m" (fpuc)); |
| 605 | printf("(short)a = %d\n", wa); |
| 606 | printf("(int)a = %d\n", ia); |
| 607 | printf("(int64_t)a = %Ld\n", lla); |
| 608 | printf("rint(a) = %f\n", ra); |
| 609 | } |
| 610 | } |
| 611 | |
| 612 | #define TEST(N) \ |
| 613 | asm("fld" #N : "=t" (a)); \ |
| 614 | printf("fld" #N "= %f\n", a); |
| 615 | |
| 616 | void test_fconst(void) |
| 617 | { |
| 618 | double a; |
| 619 | TEST(1); |
| 620 | TEST(l2t); |
| 621 | TEST(l2e); |
| 622 | TEST(pi); |
| 623 | TEST(lg2); |
| 624 | TEST(ln2); |
| 625 | TEST(z); |
| 626 | } |
| 627 | |
| 628 | void test_fbcd(double a) |
| 629 | { |
| 630 | unsigned short bcd[5]; |
| 631 | double b; |
| 632 | |
| 633 | asm("fbstp %0" : "=m" (bcd[0]) : "t" (a) : "st"); |
| 634 | asm("fbld %1" : "=t" (b) : "m" (bcd[0])); |
| 635 | printf("a=%f bcd=%04x%04x%04x%04x%04x b=%f\n", |
| 636 | a, bcd[4], bcd[3], bcd[2], bcd[1], bcd[0], b); |
| 637 | } |
| 638 | |
| 639 | #define TEST_ENV(env, save, restore)\ |
| 640 | {\ |
| 641 | memset((env), 0xaa, sizeof(*(env)));\ |
| 642 | for(i=0;i<5;i++)\ |
| 643 | asm volatile ("fldl %0" : : "m" (dtab[i]));\ |
| 644 | asm(save " %0\n" : : "m" (*(env)));\ |
| 645 | asm(restore " %0\n": : "m" (*(env)));\ |
| 646 | for(i=0;i<5;i++)\ |
| 647 | asm volatile ("fstpl %0" : "=m" (rtab[i]));\ |
| 648 | for(i=0;i<5;i++)\ |
| 649 | printf("res[%d]=%f\n", i, rtab[i]);\ |
| 650 | printf("fpuc=%04x fpus=%04x fptag=%04x\n",\ |
| 651 | (env)->fpuc,\ |
| 652 | (env)->fpus & 0xff00,\ |
| 653 | (env)->fptag);\ |
| 654 | } |
| 655 | |
| 656 | void test_fenv(void) |
| 657 | { |
| 658 | struct __attribute__((packed)) { |
| 659 | uint16_t fpuc; |
| 660 | uint16_t dummy1; |
| 661 | uint16_t fpus; |
| 662 | uint16_t dummy2; |
| 663 | uint16_t fptag; |
| 664 | uint16_t dummy3; |
| 665 | uint32_t ignored[4]; |
| 666 | long double fpregs[8]; |
| 667 | } float_env32; |
| 668 | struct __attribute__((packed)) { |
| 669 | uint16_t fpuc; |
| 670 | uint16_t fpus; |
| 671 | uint16_t fptag; |
| 672 | uint16_t ignored[4]; |
| 673 | long double fpregs[8]; |
| 674 | } float_env16; |
| 675 | double dtab[8]; |
| 676 | double rtab[8]; |
| 677 | int i; |
| 678 | |
| 679 | for(i=0;i<8;i++) |
| 680 | dtab[i] = i + 1; |
| 681 | |
| 682 | TEST_ENV(&float_env16, "data16 fnstenv", "data16 fldenv"); |
| 683 | TEST_ENV(&float_env16, "data16 fnsave", "data16 frstor"); |
| 684 | TEST_ENV(&float_env32, "fnstenv", "fldenv"); |
| 685 | TEST_ENV(&float_env32, "fnsave", "frstor"); |
| 686 | |
| 687 | /* test for ffree */ |
| 688 | for(i=0;i<5;i++) |
| 689 | asm volatile ("fldl %0" : : "m" (dtab[i])); |
| 690 | asm volatile("ffree %st(2)"); |
| 691 | asm volatile ("fnstenv %0\n" : : "m" (float_env32)); |
| 692 | asm volatile ("fninit"); |
| 693 | printf("fptag=%04x\n", float_env32.fptag); |
| 694 | } |
| 695 | |
| 696 | |
| 697 | #define TEST_FCMOV(a, b, eflags, CC)\ |
| 698 | {\ |
| 699 | double res;\ |
| 700 | asm("push %3\n"\ |
| 701 | "popf\n"\ |
| 702 | "fcmov" CC " %2, %0\n"\ |
| 703 | : "=t" (res)\ |
| 704 | : "0" (a), "u" (b), "g" (eflags));\ |
| 705 | printf("fcmov%s eflags=0x%04x-> %f\n", \ |
| 706 | CC, eflags, res);\ |
| 707 | } |
| 708 | |
| 709 | void test_fcmov(void) |
| 710 | { |
| 711 | double a, b; |
| 712 | int eflags, i; |
| 713 | |
| 714 | a = 1.0; |
| 715 | b = 2.0; |
| 716 | for(i = 0; i < 4; i++) { |
| 717 | eflags = 0; |
| 718 | if (i & 1) |
| 719 | eflags |= CC_C; |
| 720 | if (i & 2) |
| 721 | eflags |= CC_Z; |
| 722 | TEST_FCMOV(a, b, eflags, "b"); |
| 723 | TEST_FCMOV(a, b, eflags, "e"); |
| 724 | TEST_FCMOV(a, b, eflags, "be"); |
| 725 | TEST_FCMOV(a, b, eflags, "nb"); |
| 726 | TEST_FCMOV(a, b, eflags, "ne"); |
| 727 | TEST_FCMOV(a, b, eflags, "nbe"); |
| 728 | } |
| 729 | TEST_FCMOV(a, b, 0, "u"); |
| 730 | TEST_FCMOV(a, b, CC_P, "u"); |
| 731 | TEST_FCMOV(a, b, 0, "nu"); |
| 732 | TEST_FCMOV(a, b, CC_P, "nu"); |
| 733 | } |
| 734 | |
| 735 | void test_floats(void) |
| 736 | { |
| 737 | test_fops(2, 3); |
| 738 | test_fops(1.4, -5); |
| 739 | test_fcmp(2, -1); |
| 740 | test_fcmp(2, 2); |
| 741 | test_fcmp(2, 3); |
| 742 | test_fcvt(0.5); |
| 743 | test_fcvt(-0.5); |
| 744 | test_fcvt(1.0/7.0); |
| 745 | test_fcvt(-1.0/9.0); |
| 746 | test_fcvt(32768); |
| 747 | test_fcvt(-1e20); |
| 748 | test_fconst(); |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 749 | // REINSTATE (maybe): test_fbcd(1234567890123456); |
| 750 | // REINSTATE (maybe): test_fbcd(-123451234567890); |
| 751 | // REINSTATE: test_fenv(); |
sewardj | cb59aeb | 2004-10-21 09:20:46 +0000 | [diff] [blame] | 752 | // REINSTATE: test_fcmov(); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 753 | } |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 754 | |
| 755 | /**********************************************/ |
| 756 | #if 0 |
| 757 | |
| 758 | #define TEST_BCD(op, op0, cc_in, cc_mask)\ |
| 759 | {\ |
| 760 | int res, flags;\ |
| 761 | res = op0;\ |
| 762 | flags = cc_in;\ |
| 763 | asm ("push %3\n\t"\ |
| 764 | "popf\n\t"\ |
| 765 | #op "\n\t"\ |
| 766 | "pushf\n\t"\ |
| 767 | "popl %1\n\t"\ |
| 768 | : "=a" (res), "=g" (flags)\ |
| 769 | : "0" (res), "1" (flags));\ |
| 770 | printf("%-10s A=%08x R=%08x CCIN=%04x CC=%04x\n",\ |
| 771 | #op, op0, res, cc_in, flags & cc_mask);\ |
| 772 | } |
| 773 | |
| 774 | void test_bcd(void) |
| 775 | { |
| 776 | TEST_BCD(daa, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 777 | TEST_BCD(daa, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 778 | TEST_BCD(daa, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 779 | TEST_BCD(daa, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 780 | TEST_BCD(daa, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 781 | TEST_BCD(daa, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 782 | TEST_BCD(daa, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 783 | TEST_BCD(daa, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 784 | TEST_BCD(daa, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 785 | TEST_BCD(daa, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 786 | TEST_BCD(daa, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 787 | TEST_BCD(daa, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 788 | TEST_BCD(daa, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 789 | |
| 790 | TEST_BCD(das, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 791 | TEST_BCD(das, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 792 | TEST_BCD(das, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 793 | TEST_BCD(das, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 794 | TEST_BCD(das, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 795 | TEST_BCD(das, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 796 | TEST_BCD(das, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 797 | TEST_BCD(das, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 798 | TEST_BCD(das, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 799 | TEST_BCD(das, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 800 | TEST_BCD(das, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 801 | TEST_BCD(das, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 802 | TEST_BCD(das, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 803 | |
| 804 | TEST_BCD(aaa, 0x12340205, CC_A, (CC_C | CC_A)); |
| 805 | TEST_BCD(aaa, 0x12340306, CC_A, (CC_C | CC_A)); |
| 806 | TEST_BCD(aaa, 0x1234040a, CC_A, (CC_C | CC_A)); |
| 807 | TEST_BCD(aaa, 0x123405fa, CC_A, (CC_C | CC_A)); |
| 808 | TEST_BCD(aaa, 0x12340205, 0, (CC_C | CC_A)); |
| 809 | TEST_BCD(aaa, 0x12340306, 0, (CC_C | CC_A)); |
| 810 | TEST_BCD(aaa, 0x1234040a, 0, (CC_C | CC_A)); |
| 811 | TEST_BCD(aaa, 0x123405fa, 0, (CC_C | CC_A)); |
| 812 | |
| 813 | TEST_BCD(aas, 0x12340205, CC_A, (CC_C | CC_A)); |
| 814 | TEST_BCD(aas, 0x12340306, CC_A, (CC_C | CC_A)); |
| 815 | TEST_BCD(aas, 0x1234040a, CC_A, (CC_C | CC_A)); |
| 816 | TEST_BCD(aas, 0x123405fa, CC_A, (CC_C | CC_A)); |
| 817 | TEST_BCD(aas, 0x12340205, 0, (CC_C | CC_A)); |
| 818 | TEST_BCD(aas, 0x12340306, 0, (CC_C | CC_A)); |
| 819 | TEST_BCD(aas, 0x1234040a, 0, (CC_C | CC_A)); |
| 820 | TEST_BCD(aas, 0x123405fa, 0, (CC_C | CC_A)); |
| 821 | |
| 822 | TEST_BCD(aam, 0x12340547, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)); |
| 823 | TEST_BCD(aad, 0x12340407, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)); |
| 824 | } |
sewardj | 2b5b751 | 2004-08-26 11:27:21 +0000 | [diff] [blame] | 825 | #endif /* 0 */ |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 826 | |
| 827 | #define TEST_XCHG(op, size, opconst)\ |
| 828 | {\ |
| 829 | int op0, op1;\ |
| 830 | op0 = 0x12345678;\ |
| 831 | op1 = 0xfbca7654;\ |
| 832 | asm(#op " %" size "0, %" size "1" \ |
| 833 | : "=q" (op0), opconst (op1) \ |
| 834 | : "0" (op0), "1" (op1));\ |
| 835 | printf("%-10s A=%08x B=%08x\n",\ |
| 836 | #op, op0, op1);\ |
| 837 | } |
| 838 | |
| 839 | #define TEST_CMPXCHG(op, size, opconst, eax)\ |
| 840 | {\ |
| 841 | int op0, op1;\ |
| 842 | op0 = 0x12345678;\ |
| 843 | op1 = 0xfbca7654;\ |
| 844 | asm(#op " %" size "0, %" size "1" \ |
| 845 | : "=q" (op0), opconst (op1) \ |
| 846 | : "0" (op0), "1" (op1), "a" (eax));\ |
| 847 | printf("%-10s EAX=%08x A=%08x C=%08x\n",\ |
| 848 | #op, eax, op0, op1);\ |
| 849 | } |
| 850 | |
| 851 | void test_xchg(void) |
| 852 | { |
| 853 | TEST_XCHG(xchgl, "", "=q"); |
| 854 | TEST_XCHG(xchgw, "w", "=q"); |
| 855 | TEST_XCHG(xchgb, "b", "=q"); |
| 856 | |
| 857 | TEST_XCHG(xchgl, "", "=m"); |
| 858 | TEST_XCHG(xchgw, "w", "=m"); |
| 859 | TEST_XCHG(xchgb, "b", "=m"); |
| 860 | |
sewardj | 2b5b751 | 2004-08-26 11:27:21 +0000 | [diff] [blame] | 861 | #if 0 |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 862 | TEST_XCHG(xaddl, "", "=q"); |
| 863 | TEST_XCHG(xaddw, "w", "=q"); |
| 864 | TEST_XCHG(xaddb, "b", "=q"); |
| 865 | |
| 866 | { |
| 867 | int res; |
| 868 | res = 0x12345678; |
| 869 | asm("xaddl %1, %0" : "=r" (res) : "0" (res)); |
| 870 | printf("xaddl same res=%08x\n", res); |
| 871 | } |
| 872 | |
| 873 | TEST_XCHG(xaddl, "", "=m"); |
| 874 | TEST_XCHG(xaddw, "w", "=m"); |
| 875 | TEST_XCHG(xaddb, "b", "=m"); |
sewardj | 2b5b751 | 2004-08-26 11:27:21 +0000 | [diff] [blame] | 876 | #endif |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 877 | TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfbca7654); |
| 878 | TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfbca7654); |
| 879 | TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfbca7654); |
| 880 | |
| 881 | TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfffefdfc); |
| 882 | TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfffefdfc); |
| 883 | TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfffefdfc); |
| 884 | |
| 885 | TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfbca7654); |
| 886 | TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfbca7654); |
| 887 | TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfbca7654); |
| 888 | |
| 889 | TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfffefdfc); |
| 890 | TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfffefdfc); |
| 891 | TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfffefdfc); |
sewardj | 2b5b751 | 2004-08-26 11:27:21 +0000 | [diff] [blame] | 892 | #if 0 |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 893 | { |
| 894 | uint64_t op0, op1, op2; |
| 895 | int i, eflags; |
| 896 | |
| 897 | for(i = 0; i < 2; i++) { |
| 898 | op0 = 0x123456789abcd; |
| 899 | if (i == 0) |
| 900 | op1 = 0xfbca765423456; |
| 901 | else |
| 902 | op1 = op0; |
| 903 | op2 = 0x6532432432434; |
| 904 | asm("cmpxchg8b %1\n" |
| 905 | "pushf\n" |
| 906 | "popl %2\n" |
| 907 | : "=A" (op0), "=m" (op1), "=g" (eflags) |
| 908 | : "0" (op0), "m" (op1), "b" ((int)op2), "c" ((int)(op2 >> 32))); |
| 909 | printf("cmpxchg8b: op0=%016llx op1=%016llx CC=%02x\n", |
| 910 | op0, op1, eflags & CC_Z); |
| 911 | } |
| 912 | } |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 913 | #endif |
sewardj | 2b5b751 | 2004-08-26 11:27:21 +0000 | [diff] [blame] | 914 | } |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 915 | |
| 916 | /**********************************************/ |
| 917 | /* segmentation tests */ |
| 918 | #if 0 |
| 919 | #include <asm/ldt.h> |
| 920 | #include <linux/unistd.h> |
| 921 | #include <linux/version.h> |
| 922 | |
| 923 | _syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount) |
| 924 | |
| 925 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66) |
| 926 | #define modify_ldt_ldt_s user_desc |
| 927 | #endif |
| 928 | |
| 929 | uint8_t seg_data1[4096]; |
| 930 | uint8_t seg_data2[4096]; |
| 931 | |
| 932 | #define MK_SEL(n) (((n) << 3) | 7) |
| 933 | |
| 934 | #define TEST_LR(op, size, seg, mask)\ |
| 935 | {\ |
| 936 | int res, res2;\ |
| 937 | res = 0x12345678;\ |
| 938 | asm (op " %" size "2, %" size "0\n" \ |
| 939 | "movl $0, %1\n"\ |
| 940 | "jnz 1f\n"\ |
| 941 | "movl $1, %1\n"\ |
| 942 | "1:\n"\ |
| 943 | : "=r" (res), "=r" (res2) : "m" (seg), "0" (res));\ |
| 944 | printf(op ": Z=%d %08x\n", res2, res & ~(mask));\ |
| 945 | } |
| 946 | |
| 947 | /* NOTE: we use Linux modify_ldt syscall */ |
| 948 | void test_segs(void) |
| 949 | { |
| 950 | struct modify_ldt_ldt_s ldt; |
| 951 | long long ldt_table[3]; |
| 952 | int res, res2; |
| 953 | char tmp; |
| 954 | struct { |
| 955 | uint32_t offset; |
| 956 | uint16_t seg; |
| 957 | } __attribute__((packed)) segoff; |
| 958 | |
| 959 | ldt.entry_number = 1; |
| 960 | ldt.base_addr = (unsigned long)&seg_data1; |
| 961 | ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12; |
| 962 | ldt.seg_32bit = 1; |
| 963 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 964 | ldt.read_exec_only = 0; |
| 965 | ldt.limit_in_pages = 1; |
| 966 | ldt.seg_not_present = 0; |
| 967 | ldt.useable = 1; |
| 968 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 969 | |
| 970 | ldt.entry_number = 2; |
| 971 | ldt.base_addr = (unsigned long)&seg_data2; |
| 972 | ldt.limit = (sizeof(seg_data2) + 0xfff) >> 12; |
| 973 | ldt.seg_32bit = 1; |
| 974 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 975 | ldt.read_exec_only = 0; |
| 976 | ldt.limit_in_pages = 1; |
| 977 | ldt.seg_not_present = 0; |
| 978 | ldt.useable = 1; |
| 979 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 980 | |
| 981 | modify_ldt(0, &ldt_table, sizeof(ldt_table)); /* read ldt entries */ |
| 982 | #if 0 |
| 983 | { |
| 984 | int i; |
| 985 | for(i=0;i<3;i++) |
| 986 | printf("%d: %016Lx\n", i, ldt_table[i]); |
| 987 | } |
| 988 | #endif |
| 989 | /* do some tests with fs or gs */ |
| 990 | asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1))); |
| 991 | |
| 992 | seg_data1[1] = 0xaa; |
| 993 | seg_data2[1] = 0x55; |
| 994 | |
| 995 | asm volatile ("fs movzbl 0x1, %0" : "=r" (res)); |
| 996 | printf("FS[1] = %02x\n", res); |
| 997 | |
| 998 | asm volatile ("pushl %%gs\n" |
| 999 | "movl %1, %%gs\n" |
| 1000 | "gs movzbl 0x1, %0\n" |
| 1001 | "popl %%gs\n" |
| 1002 | : "=r" (res) |
| 1003 | : "r" (MK_SEL(2))); |
| 1004 | printf("GS[1] = %02x\n", res); |
| 1005 | |
| 1006 | /* tests with ds/ss (implicit segment case) */ |
| 1007 | tmp = 0xa5; |
| 1008 | asm volatile ("pushl %%ebp\n\t" |
| 1009 | "pushl %%ds\n\t" |
| 1010 | "movl %2, %%ds\n\t" |
| 1011 | "movl %3, %%ebp\n\t" |
| 1012 | "movzbl 0x1, %0\n\t" |
| 1013 | "movzbl (%%ebp), %1\n\t" |
| 1014 | "popl %%ds\n\t" |
| 1015 | "popl %%ebp\n\t" |
| 1016 | : "=r" (res), "=r" (res2) |
| 1017 | : "r" (MK_SEL(1)), "r" (&tmp)); |
| 1018 | printf("DS[1] = %02x\n", res); |
| 1019 | printf("SS[tmp] = %02x\n", res2); |
| 1020 | |
| 1021 | segoff.seg = MK_SEL(2); |
| 1022 | segoff.offset = 0xabcdef12; |
| 1023 | asm volatile("lfs %2, %0\n\t" |
| 1024 | "movl %%fs, %1\n\t" |
| 1025 | : "=r" (res), "=g" (res2) |
| 1026 | : "m" (segoff)); |
| 1027 | printf("FS:reg = %04x:%08x\n", res2, res); |
| 1028 | |
| 1029 | TEST_LR("larw", "w", MK_SEL(2), 0x0100); |
| 1030 | TEST_LR("larl", "", MK_SEL(2), 0x0100); |
| 1031 | TEST_LR("lslw", "w", MK_SEL(2), 0); |
| 1032 | TEST_LR("lsll", "", MK_SEL(2), 0); |
| 1033 | |
| 1034 | TEST_LR("larw", "w", 0xfff8, 0); |
| 1035 | TEST_LR("larl", "", 0xfff8, 0); |
| 1036 | TEST_LR("lslw", "w", 0xfff8, 0); |
| 1037 | TEST_LR("lsll", "", 0xfff8, 0); |
| 1038 | } |
| 1039 | #endif |
| 1040 | |
| 1041 | #if 0 |
| 1042 | /* 16 bit code test */ |
| 1043 | extern char code16_start, code16_end; |
| 1044 | extern char code16_func1; |
| 1045 | extern char code16_func2; |
| 1046 | extern char code16_func3; |
| 1047 | |
| 1048 | void test_code16(void) |
| 1049 | { |
| 1050 | struct modify_ldt_ldt_s ldt; |
| 1051 | int res, res2; |
| 1052 | |
| 1053 | /* build a code segment */ |
| 1054 | ldt.entry_number = 1; |
| 1055 | ldt.base_addr = (unsigned long)&code16_start; |
| 1056 | ldt.limit = &code16_end - &code16_start; |
| 1057 | ldt.seg_32bit = 0; |
| 1058 | ldt.contents = MODIFY_LDT_CONTENTS_CODE; |
| 1059 | ldt.read_exec_only = 0; |
| 1060 | ldt.limit_in_pages = 0; |
| 1061 | ldt.seg_not_present = 0; |
| 1062 | ldt.useable = 1; |
| 1063 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1064 | |
| 1065 | /* call the first function */ |
| 1066 | asm volatile ("lcall %1, %2" |
| 1067 | : "=a" (res) |
| 1068 | : "i" (MK_SEL(1)), "i" (&code16_func1): "memory", "cc"); |
| 1069 | printf("func1() = 0x%08x\n", res); |
| 1070 | asm volatile ("lcall %2, %3" |
| 1071 | : "=a" (res), "=c" (res2) |
| 1072 | : "i" (MK_SEL(1)), "i" (&code16_func2): "memory", "cc"); |
| 1073 | printf("func2() = 0x%08x spdec=%d\n", res, res2); |
| 1074 | asm volatile ("lcall %1, %2" |
| 1075 | : "=a" (res) |
| 1076 | : "i" (MK_SEL(1)), "i" (&code16_func3): "memory", "cc"); |
| 1077 | printf("func3() = 0x%08x\n", res); |
| 1078 | } |
| 1079 | #endif |
| 1080 | |
| 1081 | extern char func_lret32; |
| 1082 | extern char func_iret32; |
| 1083 | |
| 1084 | void test_misc(void) |
| 1085 | { |
| 1086 | char table[256]; |
| 1087 | int res, i; |
| 1088 | |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1089 | #if 0 |
| 1090 | // REINSTATE |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1091 | for(i=0;i<256;i++) table[i] = 256 - i; |
| 1092 | res = 0x12345678; |
| 1093 | asm ("xlat" : "=a" (res) : "b" (table), "0" (res)); |
| 1094 | printf("xlat: EAX=%08x\n", res); |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1095 | #endif |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1096 | #if 0 |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1097 | // REINSTATE |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1098 | asm volatile ("pushl %%cs ; call %1" |
| 1099 | : "=a" (res) |
| 1100 | : "m" (func_lret32): "memory", "cc"); |
| 1101 | printf("func_lret32=%x\n", res); |
| 1102 | |
| 1103 | asm volatile ("pushfl ; pushl %%cs ; call %1" |
| 1104 | : "=a" (res) |
| 1105 | : "m" (func_iret32): "memory", "cc"); |
| 1106 | printf("func_iret32=%x\n", res); |
| 1107 | #endif |
| 1108 | /* specific popl test */ |
| 1109 | asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popl (%%esp) ; popl %0" |
| 1110 | : "=g" (res)); |
| 1111 | printf("popl esp=%x\n", res); |
| 1112 | #if 0 |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1113 | // REINSTATE |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1114 | /* specific popw test */ |
| 1115 | asm volatile ("pushl $12345432 ; pushl $0x9abcdef ; popw (%%esp) ; addl $2, %%esp ; popl %0" |
| 1116 | : "=g" (res)); |
| 1117 | printf("popw esp=%x\n", res); |
| 1118 | #endif |
| 1119 | } |
| 1120 | |
| 1121 | uint8_t str_buffer[4096]; |
| 1122 | |
| 1123 | #define TEST_STRING1(OP, size, DF, REP)\ |
| 1124 | {\ |
| 1125 | int esi, edi, eax, ecx, eflags;\ |
| 1126 | \ |
| 1127 | esi = (long)(str_buffer + sizeof(str_buffer) / 2);\ |
| 1128 | edi = (long)(str_buffer + sizeof(str_buffer) / 2) + 16;\ |
| 1129 | eax = 0x12345678;\ |
| 1130 | ecx = 17;\ |
| 1131 | \ |
| 1132 | asm volatile ("pushl $0\n\t"\ |
| 1133 | "popf\n\t"\ |
| 1134 | DF "\n\t"\ |
| 1135 | REP #OP size "\n\t"\ |
| 1136 | "cld\n\t"\ |
| 1137 | "pushf\n\t"\ |
| 1138 | "popl %4\n\t"\ |
| 1139 | : "=S" (esi), "=D" (edi), "=a" (eax), "=c" (ecx), "=g" (eflags)\ |
| 1140 | : "0" (esi), "1" (edi), "2" (eax), "3" (ecx));\ |
| 1141 | printf("%-10s ESI=%08x EDI=%08x EAX=%08x ECX=%08x EFL=%04x\n",\ |
| 1142 | REP #OP size, esi, edi, eax, ecx,\ |
| 1143 | eflags & (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));\ |
| 1144 | } |
| 1145 | |
| 1146 | #define TEST_STRING(OP, REP)\ |
| 1147 | TEST_STRING1(OP, "b", "", REP);\ |
| 1148 | TEST_STRING1(OP, "w", "", REP);\ |
| 1149 | TEST_STRING1(OP, "l", "", REP);\ |
| 1150 | TEST_STRING1(OP, "b", "std", REP);\ |
| 1151 | TEST_STRING1(OP, "w", "std", REP);\ |
| 1152 | TEST_STRING1(OP, "l", "std", REP) |
| 1153 | |
| 1154 | void test_string(void) |
| 1155 | { |
| 1156 | int i; |
| 1157 | for(i = 0;i < sizeof(str_buffer); i++) |
| 1158 | str_buffer[i] = i + 0x56; |
| 1159 | TEST_STRING(stos, ""); |
| 1160 | TEST_STRING(stos, "rep "); |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1161 | // REINSTATE: TEST_STRING(lods, ""); /* to verify stos */ |
| 1162 | // REINSTATE: TEST_STRING(lods, "rep "); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1163 | TEST_STRING(movs, ""); |
| 1164 | TEST_STRING(movs, "rep "); |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1165 | // REINSTATE: TEST_STRING(lods, ""); /* to verify stos */ |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1166 | |
| 1167 | /* XXX: better tests */ |
| 1168 | TEST_STRING(scas, ""); |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1169 | // REINSTATE: TEST_STRING(scas, "repz "); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1170 | TEST_STRING(scas, "repnz "); |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1171 | // REINSTATE: TEST_STRING(cmps, ""); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1172 | TEST_STRING(cmps, "repz "); |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1173 | // REINSTATE: TEST_STRING(cmps, "repnz "); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1174 | } |
| 1175 | |
| 1176 | /* VM86 test */ |
| 1177 | #if 0 |
| 1178 | static inline void set_bit(uint8_t *a, unsigned int bit) |
| 1179 | { |
| 1180 | a[bit / 8] |= (1 << (bit % 8)); |
| 1181 | } |
| 1182 | |
| 1183 | static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg) |
| 1184 | { |
| 1185 | return (uint8_t *)((seg << 4) + (reg & 0xffff)); |
| 1186 | } |
| 1187 | |
| 1188 | static inline void pushw(struct vm86_regs *r, int val) |
| 1189 | { |
| 1190 | r->esp = (r->esp & ~0xffff) | ((r->esp - 2) & 0xffff); |
| 1191 | *(uint16_t *)seg_to_linear(r->ss, r->esp) = val; |
| 1192 | } |
| 1193 | |
| 1194 | #undef __syscall_return |
| 1195 | #define __syscall_return(type, res) \ |
| 1196 | do { \ |
| 1197 | return (type) (res); \ |
| 1198 | } while (0) |
| 1199 | |
| 1200 | _syscall2(int, vm86, int, func, struct vm86plus_struct *, v86) |
| 1201 | |
| 1202 | extern char vm86_code_start; |
| 1203 | extern char vm86_code_end; |
| 1204 | |
| 1205 | #define VM86_CODE_CS 0x100 |
| 1206 | #define VM86_CODE_IP 0x100 |
| 1207 | |
| 1208 | void test_vm86(void) |
| 1209 | { |
| 1210 | struct vm86plus_struct ctx; |
| 1211 | struct vm86_regs *r; |
| 1212 | uint8_t *vm86_mem; |
| 1213 | int seg, ret; |
| 1214 | |
| 1215 | vm86_mem = mmap((void *)0x00000000, 0x110000, |
| 1216 | PROT_WRITE | PROT_READ | PROT_EXEC, |
| 1217 | MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0); |
| 1218 | if (vm86_mem == MAP_FAILED) { |
| 1219 | printf("ERROR: could not map vm86 memory"); |
| 1220 | return; |
| 1221 | } |
| 1222 | memset(&ctx, 0, sizeof(ctx)); |
| 1223 | |
| 1224 | /* init basic registers */ |
| 1225 | r = &ctx.regs; |
| 1226 | r->eip = VM86_CODE_IP; |
| 1227 | r->esp = 0xfffe; |
| 1228 | seg = VM86_CODE_CS; |
| 1229 | r->cs = seg; |
| 1230 | r->ss = seg; |
| 1231 | r->ds = seg; |
| 1232 | r->es = seg; |
| 1233 | r->fs = seg; |
| 1234 | r->gs = seg; |
| 1235 | r->eflags = VIF_MASK; |
| 1236 | |
| 1237 | /* move code to proper address. We use the same layout as a .com |
| 1238 | dos program. */ |
| 1239 | memcpy(vm86_mem + (VM86_CODE_CS << 4) + VM86_CODE_IP, |
| 1240 | &vm86_code_start, &vm86_code_end - &vm86_code_start); |
| 1241 | |
| 1242 | /* mark int 0x21 as being emulated */ |
| 1243 | set_bit((uint8_t *)&ctx.int_revectored, 0x21); |
| 1244 | |
| 1245 | for(;;) { |
| 1246 | ret = vm86(VM86_ENTER, &ctx); |
| 1247 | switch(VM86_TYPE(ret)) { |
| 1248 | case VM86_INTx: |
| 1249 | { |
| 1250 | int int_num, ah, v; |
| 1251 | |
| 1252 | int_num = VM86_ARG(ret); |
| 1253 | if (int_num != 0x21) |
| 1254 | goto unknown_int; |
| 1255 | ah = (r->eax >> 8) & 0xff; |
| 1256 | switch(ah) { |
| 1257 | case 0x00: /* exit */ |
| 1258 | goto the_end; |
| 1259 | case 0x02: /* write char */ |
| 1260 | { |
| 1261 | uint8_t c = r->edx; |
| 1262 | putchar(c); |
| 1263 | } |
| 1264 | break; |
| 1265 | case 0x09: /* write string */ |
| 1266 | { |
| 1267 | uint8_t c, *ptr; |
| 1268 | ptr = seg_to_linear(r->ds, r->edx); |
| 1269 | for(;;) { |
| 1270 | c = *ptr++; |
| 1271 | if (c == '$') |
| 1272 | break; |
| 1273 | putchar(c); |
| 1274 | } |
| 1275 | r->eax = (r->eax & ~0xff) | '$'; |
| 1276 | } |
| 1277 | break; |
| 1278 | case 0xff: /* extension: write eflags number in edx */ |
| 1279 | v = (int)r->edx; |
| 1280 | #ifndef LINUX_VM86_IOPL_FIX |
| 1281 | v &= ~0x3000; |
| 1282 | #endif |
| 1283 | printf("%08x\n", v); |
| 1284 | break; |
| 1285 | default: |
| 1286 | unknown_int: |
| 1287 | printf("unsupported int 0x%02x\n", int_num); |
| 1288 | goto the_end; |
| 1289 | } |
| 1290 | } |
| 1291 | break; |
| 1292 | case VM86_SIGNAL: |
| 1293 | /* a signal came, we just ignore that */ |
| 1294 | break; |
| 1295 | case VM86_STI: |
| 1296 | break; |
| 1297 | default: |
| 1298 | printf("ERROR: unhandled vm86 return code (0x%x)\n", ret); |
| 1299 | goto the_end; |
| 1300 | } |
| 1301 | } |
| 1302 | the_end: |
| 1303 | printf("VM86 end\n"); |
| 1304 | munmap(vm86_mem, 0x110000); |
| 1305 | } |
| 1306 | #endif |
| 1307 | |
| 1308 | /* exception tests */ |
| 1309 | #if 0 |
| 1310 | #ifndef REG_EAX |
| 1311 | #define REG_EAX EAX |
| 1312 | #define REG_EBX EBX |
| 1313 | #define REG_ECX ECX |
| 1314 | #define REG_EDX EDX |
| 1315 | #define REG_ESI ESI |
| 1316 | #define REG_EDI EDI |
| 1317 | #define REG_EBP EBP |
| 1318 | #define REG_ESP ESP |
| 1319 | #define REG_EIP EIP |
| 1320 | #define REG_EFL EFL |
| 1321 | #define REG_TRAPNO TRAPNO |
| 1322 | #define REG_ERR ERR |
| 1323 | #endif |
| 1324 | |
| 1325 | jmp_buf jmp_env; |
| 1326 | int v1; |
| 1327 | int tab[2]; |
| 1328 | |
| 1329 | void sig_handler(int sig, siginfo_t *info, void *puc) |
| 1330 | { |
| 1331 | struct ucontext *uc = puc; |
| 1332 | |
| 1333 | printf("si_signo=%d si_errno=%d si_code=%d", |
| 1334 | info->si_signo, info->si_errno, info->si_code); |
| 1335 | printf(" si_addr=0x%08lx", |
| 1336 | (unsigned long)info->si_addr); |
| 1337 | printf("\n"); |
| 1338 | |
| 1339 | printf("trapno=0x%02x err=0x%08x", |
| 1340 | uc->uc_mcontext.gregs[REG_TRAPNO], |
| 1341 | uc->uc_mcontext.gregs[REG_ERR]); |
| 1342 | printf(" EIP=0x%08x", uc->uc_mcontext.gregs[REG_EIP]); |
| 1343 | printf("\n"); |
| 1344 | longjmp(jmp_env, 1); |
| 1345 | } |
| 1346 | |
| 1347 | void test_exceptions(void) |
| 1348 | { |
| 1349 | struct modify_ldt_ldt_s ldt; |
| 1350 | struct sigaction act; |
| 1351 | volatile int val; |
| 1352 | |
| 1353 | act.sa_sigaction = sig_handler; |
| 1354 | sigemptyset(&act.sa_mask); |
| 1355 | act.sa_flags = SA_SIGINFO; |
| 1356 | sigaction(SIGFPE, &act, NULL); |
| 1357 | sigaction(SIGILL, &act, NULL); |
| 1358 | sigaction(SIGSEGV, &act, NULL); |
| 1359 | sigaction(SIGBUS, &act, NULL); |
| 1360 | sigaction(SIGTRAP, &act, NULL); |
| 1361 | |
| 1362 | /* test division by zero reporting */ |
| 1363 | printf("DIVZ exception:\n"); |
| 1364 | if (setjmp(jmp_env) == 0) { |
| 1365 | /* now divide by zero */ |
| 1366 | v1 = 0; |
| 1367 | v1 = 2 / v1; |
| 1368 | } |
| 1369 | |
| 1370 | printf("BOUND exception:\n"); |
| 1371 | if (setjmp(jmp_env) == 0) { |
| 1372 | /* bound exception */ |
| 1373 | tab[0] = 1; |
| 1374 | tab[1] = 10; |
| 1375 | asm volatile ("bound %0, %1" : : "r" (11), "m" (tab)); |
| 1376 | } |
| 1377 | |
| 1378 | printf("segment exceptions:\n"); |
| 1379 | if (setjmp(jmp_env) == 0) { |
| 1380 | /* load an invalid segment */ |
| 1381 | asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 1)); |
| 1382 | } |
| 1383 | if (setjmp(jmp_env) == 0) { |
| 1384 | /* null data segment is valid */ |
| 1385 | asm volatile ("movl %0, %%fs" : : "r" (3)); |
| 1386 | /* null stack segment */ |
| 1387 | asm volatile ("movl %0, %%ss" : : "r" (3)); |
| 1388 | } |
| 1389 | |
| 1390 | ldt.entry_number = 1; |
| 1391 | ldt.base_addr = (unsigned long)&seg_data1; |
| 1392 | ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12; |
| 1393 | ldt.seg_32bit = 1; |
| 1394 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 1395 | ldt.read_exec_only = 0; |
| 1396 | ldt.limit_in_pages = 1; |
| 1397 | ldt.seg_not_present = 1; |
| 1398 | ldt.useable = 1; |
| 1399 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1400 | |
| 1401 | if (setjmp(jmp_env) == 0) { |
| 1402 | /* segment not present */ |
| 1403 | asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1))); |
| 1404 | } |
| 1405 | |
| 1406 | /* test SEGV reporting */ |
| 1407 | printf("PF exception:\n"); |
| 1408 | if (setjmp(jmp_env) == 0) { |
| 1409 | val = 1; |
| 1410 | /* we add a nop to test a weird PC retrieval case */ |
| 1411 | asm volatile ("nop"); |
| 1412 | /* now store in an invalid address */ |
| 1413 | *(char *)0x1234 = 1; |
| 1414 | } |
| 1415 | |
| 1416 | /* test SEGV reporting */ |
| 1417 | printf("PF exception:\n"); |
| 1418 | if (setjmp(jmp_env) == 0) { |
| 1419 | val = 1; |
| 1420 | /* read from an invalid address */ |
| 1421 | v1 = *(char *)0x1234; |
| 1422 | } |
| 1423 | |
| 1424 | /* test illegal instruction reporting */ |
| 1425 | printf("UD2 exception:\n"); |
| 1426 | if (setjmp(jmp_env) == 0) { |
| 1427 | /* now execute an invalid instruction */ |
| 1428 | asm volatile("ud2"); |
| 1429 | } |
| 1430 | printf("lock nop exception:\n"); |
| 1431 | if (setjmp(jmp_env) == 0) { |
| 1432 | /* now execute an invalid instruction */ |
| 1433 | asm volatile("lock nop"); |
| 1434 | } |
| 1435 | |
| 1436 | printf("INT exception:\n"); |
| 1437 | if (setjmp(jmp_env) == 0) { |
| 1438 | asm volatile ("int $0xfd"); |
| 1439 | } |
| 1440 | if (setjmp(jmp_env) == 0) { |
| 1441 | asm volatile ("int $0x01"); |
| 1442 | } |
| 1443 | if (setjmp(jmp_env) == 0) { |
| 1444 | asm volatile (".byte 0xcd, 0x03"); |
| 1445 | } |
| 1446 | if (setjmp(jmp_env) == 0) { |
| 1447 | asm volatile ("int $0x04"); |
| 1448 | } |
| 1449 | if (setjmp(jmp_env) == 0) { |
| 1450 | asm volatile ("int $0x05"); |
| 1451 | } |
| 1452 | |
| 1453 | printf("INT3 exception:\n"); |
| 1454 | if (setjmp(jmp_env) == 0) { |
| 1455 | asm volatile ("int3"); |
| 1456 | } |
| 1457 | |
| 1458 | printf("CLI exception:\n"); |
| 1459 | if (setjmp(jmp_env) == 0) { |
| 1460 | asm volatile ("cli"); |
| 1461 | } |
| 1462 | |
| 1463 | printf("STI exception:\n"); |
| 1464 | if (setjmp(jmp_env) == 0) { |
| 1465 | asm volatile ("cli"); |
| 1466 | } |
| 1467 | |
| 1468 | printf("INTO exception:\n"); |
| 1469 | if (setjmp(jmp_env) == 0) { |
| 1470 | /* overflow exception */ |
| 1471 | asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff)); |
| 1472 | } |
| 1473 | |
| 1474 | printf("OUTB exception:\n"); |
| 1475 | if (setjmp(jmp_env) == 0) { |
| 1476 | asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0)); |
| 1477 | } |
| 1478 | |
| 1479 | printf("INB exception:\n"); |
| 1480 | if (setjmp(jmp_env) == 0) { |
| 1481 | asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321)); |
| 1482 | } |
| 1483 | |
| 1484 | printf("REP OUTSB exception:\n"); |
| 1485 | if (setjmp(jmp_env) == 0) { |
| 1486 | asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1)); |
| 1487 | } |
| 1488 | |
| 1489 | printf("REP INSB exception:\n"); |
| 1490 | if (setjmp(jmp_env) == 0) { |
| 1491 | asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1)); |
| 1492 | } |
| 1493 | |
| 1494 | printf("HLT exception:\n"); |
| 1495 | if (setjmp(jmp_env) == 0) { |
| 1496 | asm volatile ("hlt"); |
| 1497 | } |
| 1498 | |
| 1499 | printf("single step exception:\n"); |
| 1500 | val = 0; |
| 1501 | if (setjmp(jmp_env) == 0) { |
| 1502 | asm volatile ("pushf\n" |
| 1503 | "orl $0x00100, (%%esp)\n" |
| 1504 | "popf\n" |
| 1505 | "movl $0xabcd, %0\n" |
| 1506 | "movl $0x0, %0\n" : "=m" (val) : : "cc", "memory"); |
| 1507 | } |
| 1508 | printf("val=0x%x\n", val); |
| 1509 | } |
| 1510 | |
| 1511 | /* specific precise single step test */ |
| 1512 | void sig_trap_handler(int sig, siginfo_t *info, void *puc) |
| 1513 | { |
| 1514 | struct ucontext *uc = puc; |
| 1515 | printf("EIP=0x%08x\n", uc->uc_mcontext.gregs[REG_EIP]); |
| 1516 | } |
| 1517 | |
| 1518 | const uint8_t sstep_buf1[4] = { 1, 2, 3, 4}; |
| 1519 | uint8_t sstep_buf2[4]; |
| 1520 | |
| 1521 | void test_single_step(void) |
| 1522 | { |
| 1523 | struct sigaction act; |
| 1524 | volatile int val; |
| 1525 | int i; |
| 1526 | |
| 1527 | val = 0; |
| 1528 | act.sa_sigaction = sig_trap_handler; |
| 1529 | sigemptyset(&act.sa_mask); |
| 1530 | act.sa_flags = SA_SIGINFO; |
| 1531 | sigaction(SIGTRAP, &act, NULL); |
| 1532 | asm volatile ("pushf\n" |
| 1533 | "orl $0x00100, (%%esp)\n" |
| 1534 | "popf\n" |
| 1535 | "movl $0xabcd, %0\n" |
| 1536 | |
| 1537 | /* jmp test */ |
| 1538 | "movl $3, %%ecx\n" |
| 1539 | "1:\n" |
| 1540 | "addl $1, %0\n" |
| 1541 | "decl %%ecx\n" |
| 1542 | "jnz 1b\n" |
| 1543 | |
| 1544 | /* movsb: the single step should stop at each movsb iteration */ |
| 1545 | "movl $sstep_buf1, %%esi\n" |
| 1546 | "movl $sstep_buf2, %%edi\n" |
| 1547 | "movl $0, %%ecx\n" |
| 1548 | "rep movsb\n" |
| 1549 | "movl $3, %%ecx\n" |
| 1550 | "rep movsb\n" |
| 1551 | "movl $1, %%ecx\n" |
| 1552 | "rep movsb\n" |
| 1553 | |
| 1554 | /* cmpsb: the single step should stop at each cmpsb iteration */ |
| 1555 | "movl $sstep_buf1, %%esi\n" |
| 1556 | "movl $sstep_buf2, %%edi\n" |
| 1557 | "movl $0, %%ecx\n" |
| 1558 | "rep cmpsb\n" |
| 1559 | "movl $4, %%ecx\n" |
| 1560 | "rep cmpsb\n" |
| 1561 | |
| 1562 | /* getpid() syscall: single step should skip one |
| 1563 | instruction */ |
| 1564 | "movl $20, %%eax\n" |
| 1565 | "int $0x80\n" |
| 1566 | "movl $0, %%eax\n" |
| 1567 | |
| 1568 | /* when modifying SS, trace is not done on the next |
| 1569 | instruction */ |
| 1570 | "movl %%ss, %%ecx\n" |
| 1571 | "movl %%ecx, %%ss\n" |
| 1572 | "addl $1, %0\n" |
| 1573 | "movl $1, %%eax\n" |
| 1574 | "movl %%ecx, %%ss\n" |
| 1575 | "jmp 1f\n" |
| 1576 | "addl $1, %0\n" |
| 1577 | "1:\n" |
| 1578 | "movl $1, %%eax\n" |
| 1579 | "pushl %%ecx\n" |
| 1580 | "popl %%ss\n" |
| 1581 | "addl $1, %0\n" |
| 1582 | "movl $1, %%eax\n" |
| 1583 | |
| 1584 | "pushf\n" |
| 1585 | "andl $~0x00100, (%%esp)\n" |
| 1586 | "popf\n" |
| 1587 | : "=m" (val) |
| 1588 | : |
| 1589 | : "cc", "memory", "eax", "ecx", "esi", "edi"); |
| 1590 | printf("val=%d\n", val); |
| 1591 | for(i = 0; i < 4; i++) |
| 1592 | printf("sstep_buf2[%d] = %d\n", i, sstep_buf2[i]); |
| 1593 | } |
| 1594 | |
| 1595 | /* self modifying code test */ |
| 1596 | uint8_t code[] = { |
| 1597 | 0xb8, 0x1, 0x00, 0x00, 0x00, /* movl $1, %eax */ |
| 1598 | 0xc3, /* ret */ |
| 1599 | }; |
| 1600 | |
| 1601 | asm("smc_code2:\n" |
| 1602 | "movl 4(%esp), %eax\n" |
| 1603 | "movl %eax, smc_patch_addr2 + 1\n" |
| 1604 | "nop\n" |
| 1605 | "nop\n" |
| 1606 | "nop\n" |
| 1607 | "nop\n" |
| 1608 | "nop\n" |
| 1609 | "nop\n" |
| 1610 | "nop\n" |
| 1611 | "nop\n" |
| 1612 | "smc_patch_addr2:\n" |
| 1613 | "movl $1, %eax\n" |
| 1614 | "ret\n"); |
| 1615 | |
| 1616 | typedef int FuncType(void); |
| 1617 | extern int smc_code2(int); |
| 1618 | void test_self_modifying_code(void) |
| 1619 | { |
| 1620 | int i; |
| 1621 | |
| 1622 | printf("self modifying code:\n"); |
| 1623 | printf("func1 = 0x%x\n", ((FuncType *)code)()); |
| 1624 | for(i = 2; i <= 4; i++) { |
| 1625 | code[1] = i; |
| 1626 | printf("func%d = 0x%x\n", i, ((FuncType *)code)()); |
| 1627 | } |
| 1628 | |
| 1629 | /* more difficult test : the modified code is just after the |
| 1630 | modifying instruction. It is forbidden in Intel specs, but it |
| 1631 | is used by old DOS programs */ |
| 1632 | for(i = 2; i <= 4; i++) { |
| 1633 | printf("smc_code2(%d) = %d\n", i, smc_code2(i)); |
| 1634 | } |
| 1635 | } |
| 1636 | |
| 1637 | static void *call_end __init_call = NULL; |
| 1638 | #endif |
| 1639 | |
| 1640 | int main(int argc, char **argv) |
| 1641 | { |
| 1642 | void **ptr; |
| 1643 | void (*func)(void); |
| 1644 | |
| 1645 | #if 1 |
| 1646 | ptr = &call_start + 1; |
| 1647 | while (*ptr != NULL) { |
| 1648 | func = *ptr++; |
| 1649 | func(); |
| 1650 | } |
| 1651 | #endif |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1652 | test_bsx(); |
| 1653 | test_mul(); |
| 1654 | test_jcc(); |
| 1655 | test_floats(); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1656 | //test_bcd(); |
sewardj | 2b5b751 | 2004-08-26 11:27:21 +0000 | [diff] [blame] | 1657 | test_xchg(); |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1658 | test_string(); |
sewardj | a2d37d8 | 2005-03-26 11:58:50 +0000 | [diff] [blame] | 1659 | test_misc(); // REINSTATE |
sewardj | 686edb9 | 2004-10-15 21:26:24 +0000 | [diff] [blame] | 1660 | test_lea(); |
sewardj | 5484c14 | 2004-08-24 22:43:26 +0000 | [diff] [blame] | 1661 | // test_segs(); |
| 1662 | //test_code16(); |
| 1663 | //test_vm86(); |
| 1664 | //test_exceptions(); |
| 1665 | //test_self_modifying_code(); |
| 1666 | //test_single_step(); |
| 1667 | return 0; |
| 1668 | } |