sewardj | a32ad6b | 2005-07-23 13:28:05 +0000 | [diff] [blame] | 1 | |
| 2 | /* To build: |
| 3 | |
sewardj | d7f547f | 2007-01-12 20:31:49 +0000 | [diff] [blame] | 4 | gcc -g -o test-amd64 test-amd64.c -lm |
sewardj | a32ad6b | 2005-07-23 13:28:05 +0000 | [diff] [blame] | 5 | |
| 6 | */ |
| 7 | |
| 8 | /* Contrary to what the next comment says, this is now an amd64 CPU |
| 9 | test. */ |
| 10 | |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 11 | /* |
| 12 | * x86 CPU test |
| 13 | * |
| 14 | * Copyright (c) 2003 Fabrice Bellard |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or modify |
| 17 | * it under the terms of the GNU General Public License as published by |
| 18 | * the Free Software Foundation; either version 2 of the License, or |
| 19 | * (at your option) any later version. |
| 20 | * |
| 21 | * This program is distributed in the hope that it will be useful, |
| 22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 24 | * GNU General Public License for more details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write to the Free Software |
| 28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 29 | */ |
| 30 | #define _GNU_SOURCE |
| 31 | #include <stdlib.h> |
| 32 | #include <stdio.h> |
| 33 | #include <string.h> |
| 34 | #include <inttypes.h> |
| 35 | #include <math.h> |
| 36 | #include <signal.h> |
| 37 | #include <setjmp.h> |
| 38 | #include <errno.h> |
| 39 | #include <sys/ucontext.h> |
| 40 | #include <sys/mman.h> |
| 41 | |
| 42 | /* Setting this to 1 creates a very comprehensive test of |
| 43 | integer condition codes. */ |
sewardj | 3862b24 | 2006-12-17 17:40:36 +0000 | [diff] [blame] | 44 | #define TEST_INTEGER_VERBOSE 1 |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 45 | |
| 46 | typedef long long int int64; |
| 47 | |
| 48 | //#define LINUX_VM86_IOPL_FIX |
| 49 | //#define TEST_P4_FLAGS |
| 50 | |
| 51 | #define xglue(x, y) x ## y |
| 52 | #define glue(x, y) xglue(x, y) |
| 53 | #define stringify(s) tostring(s) |
| 54 | #define tostring(s) #s |
| 55 | |
| 56 | #define CC_C 0x0001 |
| 57 | #define CC_P 0x0004 |
| 58 | #define CC_A 0x0010 |
| 59 | #define CC_Z 0x0040 |
| 60 | #define CC_S 0x0080 |
| 61 | #define CC_O 0x0800 |
| 62 | |
| 63 | #define __init_call __attribute__ ((unused,__section__ (".initcall.init"))) |
| 64 | |
| 65 | static void *call_start __init_call = NULL; |
| 66 | |
| 67 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A) |
| 68 | |
| 69 | #define OP add |
| 70 | #include "test-amd64.h" |
| 71 | |
| 72 | #define OP sub |
| 73 | #include "test-amd64.h" |
| 74 | |
| 75 | #define OP xor |
| 76 | #include "test-amd64.h" |
| 77 | |
| 78 | #define OP and |
| 79 | #include "test-amd64.h" |
| 80 | |
| 81 | #define OP or |
| 82 | #include "test-amd64.h" |
| 83 | |
| 84 | #define OP cmp |
| 85 | #include "test-amd64.h" |
| 86 | |
| 87 | #define OP adc |
| 88 | #define OP_CC |
| 89 | #include "test-amd64.h" |
| 90 | |
| 91 | #define OP sbb |
| 92 | #define OP_CC |
| 93 | #include "test-amd64.h" |
| 94 | |
| 95 | #define OP inc |
| 96 | #define OP_CC |
| 97 | #define OP1 |
| 98 | #include "test-amd64.h" |
| 99 | |
| 100 | #define OP dec |
| 101 | #define OP_CC |
| 102 | #define OP1 |
| 103 | #include "test-amd64.h" |
| 104 | |
| 105 | #define OP neg |
| 106 | #define OP_CC |
| 107 | #define OP1 |
| 108 | #include "test-amd64.h" |
| 109 | |
| 110 | #define OP not |
| 111 | #define OP_CC |
| 112 | #define OP1 |
| 113 | #include "test-amd64.h" |
| 114 | |
| 115 | #undef CC_MASK |
| 116 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O) |
| 117 | |
| 118 | #define OP shl |
| 119 | #include "test-amd64-shift.h" |
| 120 | |
| 121 | #define OP shr |
| 122 | #include "test-amd64-shift.h" |
| 123 | |
| 124 | #define OP sar |
| 125 | #include "test-amd64-shift.h" |
| 126 | |
| 127 | #define OP rol |
| 128 | #include "test-amd64-shift.h" |
| 129 | |
| 130 | #define OP ror |
| 131 | #include "test-amd64-shift.h" |
| 132 | |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 133 | #define OP rcr |
| 134 | #define OP_CC |
| 135 | #include "test-amd64-shift.h" |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 136 | |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 137 | #define OP rcl |
| 138 | #define OP_CC |
| 139 | #include "test-amd64-shift.h" |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 140 | |
| 141 | #if 0 |
| 142 | #define OP shld |
| 143 | #define OP_SHIFTD |
| 144 | #define OP_NOBYTE |
| 145 | #include "test-amd64-shift.h" |
| 146 | |
| 147 | #define OP shrd |
| 148 | #define OP_SHIFTD |
| 149 | #define OP_NOBYTE |
| 150 | #include "test-amd64-shift.h" |
| 151 | #endif |
| 152 | |
| 153 | /* XXX: should be more precise ? */ |
| 154 | #undef CC_MASK |
| 155 | #define CC_MASK (CC_C) |
| 156 | |
| 157 | #if 0 |
| 158 | #define OP bt |
| 159 | #define OP_NOBYTE |
| 160 | #include "test-amd64-shift.h" |
| 161 | |
| 162 | #define OP bts |
| 163 | #define OP_NOBYTE |
| 164 | #include "test-amd64-shift.h" |
| 165 | |
| 166 | #define OP btr |
| 167 | #define OP_NOBYTE |
| 168 | #include "test-amd64-shift.h" |
| 169 | |
| 170 | #define OP btc |
| 171 | #define OP_NOBYTE |
| 172 | #include "test-amd64-shift.h" |
| 173 | #endif |
| 174 | |
| 175 | /* lea test (modrm support) */ |
| 176 | #define TEST_LEA(STR)\ |
| 177 | {\ |
| 178 | asm("leaq " STR ", %0"\ |
| 179 | : "=r" (res)\ |
| 180 | : "a" (rax), "b" (rbx), "c" (rcx), "d" (rdx), "S" (rsi), "D" (rdi));\ |
| 181 | printf("lea %s = %016llx\n", STR, res);\ |
| 182 | } |
| 183 | |
| 184 | #define TEST_LEA16(STR)\ |
| 185 | {\ |
| 186 | asm(".code16 ; .byte 0x67 ; leal " STR ", %0 ; .code32"\ |
| 187 | : "=wq" (res)\ |
| 188 | : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));\ |
| 189 | printf("lea %s = %08x\n", STR, res);\ |
| 190 | } |
| 191 | |
| 192 | |
| 193 | void test_lea(void) |
| 194 | { |
| 195 | int64 rax, rbx, rcx, rdx, rsi, rdi, res; |
| 196 | rax = 0x0001; |
| 197 | rbx = 0x0002; |
| 198 | rcx = 0x0004; |
| 199 | rdx = 0x0008; |
| 200 | rsi = 0x0010; |
| 201 | rdi = 0x0020; |
| 202 | |
| 203 | TEST_LEA("0x4000"); |
| 204 | |
| 205 | TEST_LEA("(%%rax)"); |
| 206 | TEST_LEA("(%%rbx)"); |
| 207 | TEST_LEA("(%%rcx)"); |
| 208 | TEST_LEA("(%%rdx)"); |
| 209 | TEST_LEA("(%%rsi)"); |
| 210 | TEST_LEA("(%%rdi)"); |
| 211 | |
| 212 | TEST_LEA("0x40(%%rax)"); |
| 213 | TEST_LEA("0x40(%%rbx)"); |
| 214 | TEST_LEA("0x40(%%rcx)"); |
| 215 | TEST_LEA("0x40(%%rdx)"); |
| 216 | TEST_LEA("0x40(%%rsi)"); |
| 217 | TEST_LEA("0x40(%%rdi)"); |
| 218 | |
| 219 | TEST_LEA("0x4000(%%rax)"); |
| 220 | TEST_LEA("0x4000(%%rbx)"); |
| 221 | TEST_LEA("0x4000(%%rcx)"); |
| 222 | TEST_LEA("0x4000(%%rdx)"); |
| 223 | TEST_LEA("0x4000(%%rsi)"); |
| 224 | TEST_LEA("0x4000(%%rdi)"); |
| 225 | |
| 226 | TEST_LEA("(%%rax, %%rcx)"); |
| 227 | TEST_LEA("(%%rbx, %%rdx)"); |
| 228 | TEST_LEA("(%%rcx, %%rcx)"); |
| 229 | TEST_LEA("(%%rdx, %%rcx)"); |
| 230 | TEST_LEA("(%%rsi, %%rcx)"); |
| 231 | TEST_LEA("(%%rdi, %%rcx)"); |
| 232 | |
| 233 | TEST_LEA("0x40(%%rax, %%rcx)"); |
| 234 | TEST_LEA("0x4000(%%rbx, %%rdx)"); |
| 235 | |
| 236 | TEST_LEA("(%%rcx, %%rcx, 2)"); |
| 237 | TEST_LEA("(%%rdx, %%rcx, 4)"); |
| 238 | TEST_LEA("(%%rsi, %%rcx, 8)"); |
| 239 | |
| 240 | TEST_LEA("(,%%rax, 2)"); |
| 241 | TEST_LEA("(,%%rbx, 4)"); |
| 242 | TEST_LEA("(,%%rcx, 8)"); |
| 243 | |
| 244 | TEST_LEA("0x40(,%%rax, 2)"); |
| 245 | TEST_LEA("0x40(,%%rbx, 4)"); |
| 246 | TEST_LEA("0x40(,%%rcx, 8)"); |
| 247 | |
| 248 | |
| 249 | TEST_LEA("-10(%%rcx, %%rcx, 2)"); |
| 250 | TEST_LEA("-10(%%rdx, %%rcx, 4)"); |
| 251 | TEST_LEA("-10(%%rsi, %%rcx, 8)"); |
| 252 | |
| 253 | TEST_LEA("0x4000(%%rcx, %%rcx, 2)"); |
| 254 | TEST_LEA("0x4000(%%rdx, %%rcx, 4)"); |
| 255 | TEST_LEA("0x4000(%%rsi, %%rcx, 8)"); |
| 256 | } |
| 257 | |
| 258 | #define TEST_JCC(JCC, v1, v2)\ |
| 259 | { int one = 1; \ |
| 260 | int res;\ |
| 261 | asm("movl $1, %0\n\t"\ |
| 262 | "cmpl %2, %1\n\t"\ |
| 263 | "j" JCC " 1f\n\t"\ |
| 264 | "movl $0, %0\n\t"\ |
| 265 | "1:\n\t"\ |
| 266 | : "=r" (res)\ |
| 267 | : "r" (v1), "r" (v2));\ |
| 268 | printf("%-10s %d\n", "j" JCC, res);\ |
| 269 | \ |
| 270 | asm("movl $0, %0\n\t"\ |
| 271 | "cmpl %2, %1\n\t"\ |
| 272 | "set" JCC " %b0\n\t"\ |
| 273 | : "=r" (res)\ |
| 274 | : "r" (v1), "r" (v2));\ |
| 275 | printf("%-10s %d\n", "set" JCC, res);\ |
| 276 | {\ |
| 277 | asm("movl $0x12345678, %0\n\t"\ |
| 278 | "cmpl %2, %1\n\t"\ |
| 279 | "cmov" JCC "l %3, %0\n\t"\ |
| 280 | : "=r" (res)\ |
| 281 | : "r" (v1), "r" (v2), "m" (one));\ |
| 282 | printf("%-10s R=0x%08x\n", "cmov" JCC "l", res);\ |
| 283 | asm("movl $0x12345678, %0\n\t"\ |
| 284 | "cmpl %2, %1\n\t"\ |
| 285 | "cmov" JCC "w %w3, %w0\n\t"\ |
| 286 | : "=r" (res)\ |
| 287 | : "r" (v1), "r" (v2), "r" (one));\ |
| 288 | printf("%-10s R=0x%08x\n", "cmov" JCC "w", res);\ |
| 289 | } \ |
| 290 | } |
| 291 | |
| 292 | /* various jump tests */ |
| 293 | void test_jcc(void) |
| 294 | { |
| 295 | TEST_JCC("ne", 1, 1); |
| 296 | TEST_JCC("ne", 1, 0); |
| 297 | |
| 298 | TEST_JCC("e", 1, 1); |
| 299 | TEST_JCC("e", 1, 0); |
| 300 | |
| 301 | TEST_JCC("l", 1, 1); |
| 302 | TEST_JCC("l", 1, 0); |
| 303 | TEST_JCC("l", 1, -1); |
| 304 | |
| 305 | TEST_JCC("le", 1, 1); |
| 306 | TEST_JCC("le", 1, 0); |
| 307 | TEST_JCC("le", 1, -1); |
| 308 | |
| 309 | TEST_JCC("ge", 1, 1); |
| 310 | TEST_JCC("ge", 1, 0); |
| 311 | TEST_JCC("ge", -1, 1); |
| 312 | |
| 313 | TEST_JCC("g", 1, 1); |
| 314 | TEST_JCC("g", 1, 0); |
| 315 | TEST_JCC("g", 1, -1); |
| 316 | |
| 317 | TEST_JCC("b", 1, 1); |
| 318 | TEST_JCC("b", 1, 0); |
| 319 | TEST_JCC("b", 1, -1); |
| 320 | |
| 321 | TEST_JCC("be", 1, 1); |
| 322 | TEST_JCC("be", 1, 0); |
| 323 | TEST_JCC("be", 1, -1); |
| 324 | |
| 325 | TEST_JCC("ae", 1, 1); |
| 326 | TEST_JCC("ae", 1, 0); |
| 327 | TEST_JCC("ae", 1, -1); |
| 328 | |
| 329 | TEST_JCC("a", 1, 1); |
| 330 | TEST_JCC("a", 1, 0); |
| 331 | TEST_JCC("a", 1, -1); |
| 332 | |
| 333 | |
| 334 | TEST_JCC("p", 1, 1); |
| 335 | TEST_JCC("p", 1, 0); |
| 336 | |
| 337 | TEST_JCC("np", 1, 1); |
| 338 | TEST_JCC("np", 1, 0); |
| 339 | |
| 340 | TEST_JCC("o", 0x7fffffff, 0); |
| 341 | TEST_JCC("o", 0x7fffffff, -1); |
| 342 | |
| 343 | TEST_JCC("no", 0x7fffffff, 0); |
| 344 | TEST_JCC("no", 0x7fffffff, -1); |
| 345 | |
| 346 | TEST_JCC("s", 0, 1); |
| 347 | TEST_JCC("s", 0, -1); |
| 348 | TEST_JCC("s", 0, 0); |
| 349 | |
| 350 | TEST_JCC("ns", 0, 1); |
| 351 | TEST_JCC("ns", 0, -1); |
| 352 | TEST_JCC("ns", 0, 0); |
| 353 | } |
| 354 | |
| 355 | #undef CC_MASK |
| 356 | #ifdef TEST_P4_FLAGS |
| 357 | #define CC_MASK (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A) |
| 358 | #else |
| 359 | #define CC_MASK (CC_O | CC_C) |
| 360 | #endif |
| 361 | |
| 362 | #define OP mul |
| 363 | #include "test-amd64-muldiv.h" |
| 364 | |
| 365 | #define OP imul |
| 366 | #include "test-amd64-muldiv.h" |
| 367 | |
| 368 | void test_imulw2(int64 op0, int64 op1) |
| 369 | { |
| 370 | int64 res, s1, s0, flags; |
| 371 | s0 = op0; |
| 372 | s1 = op1; |
| 373 | res = s0; |
| 374 | flags = 0; |
| 375 | asm ("pushq %4\n\t" |
| 376 | "popfq\n\t" |
| 377 | "imulw %w2, %w0\n\t" |
| 378 | "pushfq\n\t" |
| 379 | "popq %1\n\t" |
| 380 | : "=q" (res), "=g" (flags) |
| 381 | : "q" (s1), "0" (res), "1" (flags)); |
| 382 | printf("%-10s A=%016llx B=%016llx R=%016llx CC=%04llx\n", |
| 383 | "imulw", s0, s1, res, flags & CC_MASK); |
| 384 | } |
| 385 | |
| 386 | void test_imull2(int64 op0, int64 op1) |
| 387 | { |
| 388 | int res, s1; |
| 389 | int64 s0, flags; |
| 390 | s0 = op0; |
| 391 | s1 = op1; |
| 392 | res = s0; |
| 393 | flags = 0; |
| 394 | asm ("pushq %4\n\t" |
| 395 | "popfq\n\t" |
| 396 | "imull %2, %0\n\t" |
| 397 | "pushfq\n\t" |
| 398 | "popq %1\n\t" |
| 399 | : "=q" (res), "=g" (flags) |
| 400 | : "q" (s1), "0" (res), "1" (flags)); |
| 401 | printf("%-10s A=%016llx B=%08x R=%08x CC=%04llx\n", |
| 402 | "imull", s0, s1, res, flags & CC_MASK); |
| 403 | } |
| 404 | |
| 405 | #define TEST_IMUL_IM(size, size1, op0, op1)\ |
| 406 | {\ |
| 407 | int64 res, flags;\ |
| 408 | flags = 0;\ |
| 409 | res = 0;\ |
| 410 | asm ("pushq %3\n\t"\ |
| 411 | "popfq\n\t"\ |
| 412 | "imul" size " $" #op0 ", %" size1 "2, %" size1 "0\n\t" \ |
| 413 | "pushfq\n\t"\ |
| 414 | "popq %1\n\t"\ |
| 415 | : "=r" (res), "=g" (flags)\ |
| 416 | : "r" (op1), "1" (flags), "0" (res));\ |
| 417 | printf("%-10s A=%08x B=%08x R=%016llx CC=%04llx\n",\ |
| 418 | "imul" size, op0, op1, res, flags & CC_MASK);\ |
| 419 | } |
| 420 | |
| 421 | #define TEST_IMUL_IM_L(op0, op1)\ |
| 422 | {\ |
| 423 | int64 flags = 0;\ |
| 424 | int res = 0;\ |
| 425 | int res64 = 0;\ |
| 426 | asm ("pushq %3\n\t"\ |
| 427 | "popfq\n\t"\ |
| 428 | "imul $" #op0 ", %2, %0\n\t" \ |
| 429 | "pushfq\n\t"\ |
| 430 | "popq %1\n\t"\ |
| 431 | : "=r" (res64), "=g" (flags)\ |
| 432 | : "r" (op1), "1" (flags), "0" (res));\ |
| 433 | printf("%-10s A=%08x B=%08x R=%08x CC=%04llx\n",\ |
| 434 | "imull", op0, op1, res, flags & CC_MASK);\ |
| 435 | } |
| 436 | |
| 437 | |
| 438 | #undef CC_MASK |
| 439 | #define CC_MASK (0) |
| 440 | |
| 441 | #define OP div |
| 442 | #include "test-amd64-muldiv.h" |
| 443 | |
| 444 | #define OP idiv |
| 445 | #include "test-amd64-muldiv.h" |
| 446 | |
| 447 | void test_mul(void) |
| 448 | { |
| 449 | test_imulb(0x1234561d, 4); |
| 450 | test_imulb(3, -4); |
| 451 | test_imulb(0x80, 0x80); |
| 452 | test_imulb(0x10, 0x10); |
| 453 | |
| 454 | test_imulw(0, 0, 0); |
| 455 | test_imulw(0, 0xFF, 0xFF); |
| 456 | test_imulw(0, 0xFF, 0x100); |
| 457 | test_imulw(0, 0x1234001d, 45); |
| 458 | test_imulw(0, 23, -45); |
| 459 | test_imulw(0, 0x8000, 0x8000); |
| 460 | test_imulw(0, 0x100, 0x100); |
| 461 | |
| 462 | test_imull(0, 0, 0); |
| 463 | test_imull(0, 0xFFFF, 0xFFFF); |
| 464 | test_imull(0, 0xFFFF, 0x10000); |
| 465 | test_imull(0, 0x1234001d, 45); |
| 466 | test_imull(0, 23, -45); |
| 467 | test_imull(0, 0x80000000, 0x80000000); |
| 468 | test_imull(0, 0x10000, 0x10000); |
| 469 | |
| 470 | test_mulb(0x1234561d, 4); |
| 471 | test_mulb(3, -4); |
| 472 | test_mulb(0x80, 0x80); |
| 473 | test_mulb(0x10, 0x10); |
| 474 | |
| 475 | test_mulw(0, 0x1234001d, 45); |
| 476 | test_mulw(0, 23, -45); |
| 477 | test_mulw(0, 0x8000, 0x8000); |
| 478 | test_mulw(0, 0x100, 0x100); |
| 479 | |
| 480 | test_mull(0, 0x1234001d, 45); |
| 481 | test_mull(0, 23, -45); |
| 482 | test_mull(0, 0x80000000, 0x80000000); |
| 483 | test_mull(0, 0x10000, 0x10000); |
| 484 | |
| 485 | test_imulw2(0x1234001d, 45); |
| 486 | test_imulw2(23, -45); |
| 487 | test_imulw2(0x8000, 0x8000); |
| 488 | test_imulw2(0x100, 0x100); |
| 489 | |
| 490 | test_imull2(0x1234001d, 45); |
| 491 | test_imull2(23, -45); |
| 492 | test_imull2(0x80000000, 0x80000000); |
| 493 | test_imull2(0x10000, 0x10000); |
| 494 | |
| 495 | TEST_IMUL_IM("w", "w", 45, 0x1234); |
| 496 | TEST_IMUL_IM("w", "w", -45, 23); |
| 497 | TEST_IMUL_IM("w", "w", 0x8000, 0x80000000); |
| 498 | TEST_IMUL_IM("w", "w", 0x7fff, 0x1000); |
| 499 | |
| 500 | TEST_IMUL_IM_L(45, 0x1234); |
| 501 | TEST_IMUL_IM_L(-45, 23); |
| 502 | TEST_IMUL_IM_L(0x8000, 0x80000000); |
| 503 | TEST_IMUL_IM_L(0x7fff, 0x1000); |
| 504 | |
| 505 | test_idivb(0x12341678, 0x127e); |
| 506 | test_idivb(0x43210123, -5); |
| 507 | test_idivb(0x12340004, -1); |
| 508 | |
| 509 | test_idivw(0, 0x12345678, 12347); |
| 510 | test_idivw(0, -23223, -45); |
| 511 | test_idivw(0, 0x12348000, -1); |
| 512 | test_idivw(0x12343, 0x12345678, 0x81238567); |
| 513 | |
| 514 | test_idivl(0, 0x12345678, 12347); |
| 515 | test_idivl(0, -233223, -45); |
| 516 | test_idivl(0, 0x80000000, -1); |
| 517 | test_idivl(0x12343, 0x12345678, 0x81234567); |
| 518 | |
sewardj | 871a95c | 2005-02-19 22:46:11 +0000 | [diff] [blame] | 519 | test_idivq(0, 0x12345678, 12347); |
| 520 | test_idivq(0, -233223, -45); |
| 521 | test_idivq(0, 0x80000000, -1); |
| 522 | test_idivq(0x12343, 0x12345678, 0x81234567); |
| 523 | |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 524 | test_divb(0x12341678, 0x127e); |
| 525 | test_divb(0x43210123, -5); |
| 526 | test_divb(0x12340004, -1); |
| 527 | |
| 528 | test_divw(0, 0x12345678, 12347); |
| 529 | test_divw(0, -23223, -45); |
| 530 | test_divw(0, 0x12348000, -1); |
| 531 | test_divw(0x12343, 0x12345678, 0x81238567); |
| 532 | |
| 533 | test_divl(0, 0x12345678, 12347); |
| 534 | test_divl(0, -233223, -45); |
| 535 | test_divl(0, 0x80000000, -1); |
| 536 | test_divl(0x12343, 0x12345678, 0x81234567); |
sewardj | 871a95c | 2005-02-19 22:46:11 +0000 | [diff] [blame] | 537 | |
| 538 | test_divq(0, 0x12345678, 12347); |
| 539 | test_divq(0, -233223, -45); |
| 540 | test_divq(0, 0x80000000, -1); |
| 541 | test_divq(0x12343, 0x12345678, 0x81234567); |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 542 | } |
| 543 | |
| 544 | #define TEST_BSX(op, size, op0)\ |
| 545 | {\ |
| 546 | int res, val, resz;\ |
| 547 | val = op0;\ |
| 548 | asm("xorl %1, %1\n"\ |
| 549 | "movl $0x12345678, %0\n"\ |
| 550 | #op " %" size "2, %" size "0 ; setz %b1" \ |
| 551 | : "=r" (res), "=q" (resz)\ |
sewardj | 3862b24 | 2006-12-17 17:40:36 +0000 | [diff] [blame] | 552 | : "r" (val));\ |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 553 | printf("%-10s A=%08x R=%08x %d\n", #op, val, res, resz);\ |
| 554 | } |
| 555 | |
| 556 | void test_bsx(void) |
| 557 | { |
| 558 | TEST_BSX(bsrw, "w", 0); |
| 559 | TEST_BSX(bsrw, "w", 0x12340128); |
| 560 | TEST_BSX(bsrl, "", 0); |
| 561 | TEST_BSX(bsrl, "", 0x00340128); |
| 562 | TEST_BSX(bsfw, "w", 0); |
| 563 | TEST_BSX(bsfw, "w", 0x12340128); |
| 564 | TEST_BSX(bsfl, "", 0); |
| 565 | TEST_BSX(bsfl, "", 0x00340128); |
| 566 | } |
| 567 | |
| 568 | /**********************************************/ |
| 569 | |
| 570 | void test_fops(double a, double b) |
| 571 | { |
| 572 | printf("a=%f b=%f a+b=%f\n", a, b, a + b); |
| 573 | printf("a=%f b=%f a-b=%f\n", a, b, a - b); |
| 574 | printf("a=%f b=%f a*b=%f\n", a, b, a * b); |
| 575 | printf("a=%f b=%f a/b=%f\n", a, b, a / b); |
| 576 | printf("a=%f b=%f fmod(a, b)=%f\n", a, b, fmod(a, b)); |
| 577 | printf("a=%f sqrt(a)=%f\n", a, sqrt(a)); |
| 578 | printf("a=%f sin(a)=%f\n", a, sin(a)); |
| 579 | printf("a=%f cos(a)=%f\n", a, cos(a)); |
| 580 | printf("a=%f tan(a)=%f\n", a, tan(a)); |
| 581 | printf("a=%f log(a)=%f\n", a, log(a)); |
| 582 | printf("a=%f exp(a)=%f\n", a, exp(a)); |
| 583 | printf("a=%f b=%f atan2(a, b)=%f\n", a, b, atan2(a, b)); |
| 584 | /* just to test some op combining */ |
| 585 | printf("a=%f asin(sin(a))=%f\n", a, asin(sin(a))); |
| 586 | printf("a=%f acos(cos(a))=%f\n", a, acos(cos(a))); |
| 587 | printf("a=%f atan(tan(a))=%f\n", a, atan(tan(a))); |
| 588 | } |
| 589 | |
| 590 | void test_fcmp(double a, double b) |
| 591 | { |
| 592 | printf("(%f<%f)=%d\n", |
| 593 | a, b, a < b); |
| 594 | printf("(%f<=%f)=%d\n", |
| 595 | a, b, a <= b); |
| 596 | printf("(%f==%f)=%d\n", |
| 597 | a, b, a == b); |
| 598 | printf("(%f>%f)=%d\n", |
| 599 | a, b, a > b); |
| 600 | printf("(%f<=%f)=%d\n", |
| 601 | a, b, a >= b); |
| 602 | { |
| 603 | unsigned long long int rflags; |
| 604 | /* test f(u)comi instruction */ |
| 605 | asm("fcomi %2, %1\n" |
| 606 | "pushfq\n" |
| 607 | "popq %0\n" |
| 608 | : "=r" (rflags) |
| 609 | : "t" (a), "u" (b)); |
| 610 | printf("fcomi(%f %f)=%016llx\n", a, b, rflags & (CC_Z | CC_P | CC_C)); |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | void test_fcvt(double a) |
| 615 | { |
| 616 | float fa; |
| 617 | long double la; |
| 618 | int16_t fpuc; |
| 619 | int i; |
| 620 | int64 lla; |
| 621 | int ia; |
| 622 | int16_t wa; |
| 623 | double ra; |
| 624 | |
| 625 | fa = a; |
| 626 | la = a; |
| 627 | printf("(float)%f = %f\n", a, fa); |
| 628 | printf("(long double)%f = %Lf\n", a, la); |
| 629 | printf("a=%016Lx\n", *(long long *)&a); |
| 630 | printf("la=%016Lx %04x\n", *(long long *)&la, |
| 631 | *(unsigned short *)((char *)(&la) + 8)); |
| 632 | |
| 633 | /* test all roundings */ |
| 634 | asm volatile ("fstcw %0" : "=m" (fpuc)); |
| 635 | for(i=0;i<4;i++) { |
| 636 | short zz = (fpuc & ~0x0c00) | (i << 10); |
| 637 | asm volatile ("fldcw %0" : : "m" (zz)); |
| 638 | asm volatile ("fist %0" : "=m" (wa) : "t" (a)); |
| 639 | asm volatile ("fistl %0" : "=m" (ia) : "t" (a)); |
| 640 | asm volatile ("fistpll %0" : "=m" (lla) : "t" (a) : "st"); |
| 641 | asm volatile ("frndint ; fstl %0" : "=m" (ra) : "t" (a)); |
| 642 | asm volatile ("fldcw %0" : : "m" (fpuc)); |
| 643 | printf("(short)a = %d\n", wa); |
| 644 | printf("(int)a = %d\n", ia); |
| 645 | printf("(int64_t)a = %Ld\n", lla); |
| 646 | printf("rint(a) = %f\n", ra); |
| 647 | } |
| 648 | } |
| 649 | |
| 650 | #define TEST(N) \ |
| 651 | asm("fld" #N : "=t" (a)); \ |
| 652 | printf("fld" #N "= %f\n", a); |
| 653 | |
| 654 | void test_fconst(void) |
| 655 | { |
| 656 | double a; |
| 657 | TEST(1); |
| 658 | TEST(l2t); |
| 659 | TEST(l2e); |
| 660 | TEST(pi); |
| 661 | TEST(lg2); |
| 662 | TEST(ln2); |
| 663 | TEST(z); |
| 664 | } |
| 665 | |
| 666 | void test_fbcd(double a) |
| 667 | { |
| 668 | unsigned short bcd[5]; |
| 669 | double b; |
| 670 | |
| 671 | asm("fbstp %0" : "=m" (bcd[0]) : "t" (a) : "st"); |
| 672 | asm("fbld %1" : "=t" (b) : "m" (bcd[0])); |
| 673 | printf("a=%f bcd=%04x%04x%04x%04x%04x b=%f\n", |
| 674 | a, bcd[4], bcd[3], bcd[2], bcd[1], bcd[0], b); |
| 675 | } |
| 676 | |
| 677 | #define TEST_ENV(env, save, restore)\ |
| 678 | {\ |
| 679 | memset((env), 0xaa, sizeof(*(env)));\ |
| 680 | for(i=0;i<5;i++)\ |
| 681 | asm volatile ("fldl %0" : : "m" (dtab[i]));\ |
| 682 | asm(save " %0\n" : : "m" (*(env)));\ |
| 683 | asm(restore " %0\n": : "m" (*(env)));\ |
| 684 | for(i=0;i<5;i++)\ |
| 685 | asm volatile ("fstpl %0" : "=m" (rtab[i]));\ |
| 686 | for(i=0;i<5;i++)\ |
| 687 | printf("res[%d]=%f\n", i, rtab[i]);\ |
| 688 | printf("fpuc=%04x fpus=%04x fptag=%04x\n",\ |
| 689 | (env)->fpuc,\ |
| 690 | (env)->fpus & 0xff00,\ |
| 691 | (env)->fptag);\ |
| 692 | } |
| 693 | |
| 694 | void test_fenv(void) |
| 695 | { |
| 696 | struct __attribute__((packed)) { |
| 697 | uint16_t fpuc; |
| 698 | uint16_t dummy1; |
| 699 | uint16_t fpus; |
| 700 | uint16_t dummy2; |
| 701 | uint16_t fptag; |
| 702 | uint16_t dummy3; |
| 703 | uint32_t ignored[4]; |
| 704 | long double fpregs[8]; |
| 705 | } float_env32; |
| 706 | struct __attribute__((packed)) { |
| 707 | uint16_t fpuc; |
| 708 | uint16_t fpus; |
| 709 | uint16_t fptag; |
| 710 | uint16_t ignored[4]; |
| 711 | long double fpregs[8]; |
| 712 | } float_env16; |
| 713 | double dtab[8]; |
| 714 | double rtab[8]; |
| 715 | int i; |
| 716 | |
| 717 | for(i=0;i<8;i++) |
| 718 | dtab[i] = i + 1; |
| 719 | |
| 720 | TEST_ENV(&float_env16, "data16 fnstenv", "data16 fldenv"); |
| 721 | TEST_ENV(&float_env16, "data16 fnsave", "data16 frstor"); |
| 722 | TEST_ENV(&float_env32, "fnstenv", "fldenv"); |
| 723 | TEST_ENV(&float_env32, "fnsave", "frstor"); |
| 724 | |
| 725 | /* test for ffree */ |
| 726 | for(i=0;i<5;i++) |
| 727 | asm volatile ("fldl %0" : : "m" (dtab[i])); |
| 728 | asm volatile("ffree %st(2)"); |
| 729 | asm volatile ("fnstenv %0\n" : : "m" (float_env32)); |
| 730 | asm volatile ("fninit"); |
| 731 | printf("fptag=%04x\n", float_env32.fptag); |
| 732 | } |
| 733 | |
| 734 | |
| 735 | #define TEST_FCMOV(a, b, rflags, CC)\ |
| 736 | {\ |
| 737 | double res;\ |
| 738 | asm("pushq %3\n"\ |
| 739 | "popfq\n"\ |
| 740 | "fcmov" CC " %2, %0\n"\ |
| 741 | : "=t" (res)\ |
| 742 | : "0" (a), "u" (b), "g" (rflags));\ |
| 743 | printf("fcmov%s rflags=0x%04llx-> %f\n", \ |
| 744 | CC, rflags, res);\ |
| 745 | } |
| 746 | |
| 747 | void test_fcmov(void) |
| 748 | { |
| 749 | double a, b; |
| 750 | int64 rflags, i; |
| 751 | |
| 752 | a = 1.0; |
| 753 | b = 2.0; |
| 754 | for(i = 0; i < 4; i++) { |
| 755 | rflags = 0; |
| 756 | if (i & 1) |
| 757 | rflags |= CC_C; |
| 758 | if (i & 2) |
| 759 | rflags |= CC_Z; |
| 760 | TEST_FCMOV(a, b, rflags, "b"); |
| 761 | TEST_FCMOV(a, b, rflags, "e"); |
| 762 | TEST_FCMOV(a, b, rflags, "be"); |
| 763 | TEST_FCMOV(a, b, rflags, "nb"); |
| 764 | TEST_FCMOV(a, b, rflags, "ne"); |
| 765 | TEST_FCMOV(a, b, rflags, "nbe"); |
| 766 | } |
| 767 | TEST_FCMOV(a, b, (int64)0, "u"); |
| 768 | TEST_FCMOV(a, b, (int64)CC_P, "u"); |
| 769 | TEST_FCMOV(a, b, (int64)0, "nu"); |
| 770 | TEST_FCMOV(a, b, (int64)CC_P, "nu"); |
| 771 | } |
| 772 | |
| 773 | void test_floats(void) |
| 774 | { |
| 775 | test_fops(2, 3); |
| 776 | test_fops(1.4, -5); |
| 777 | test_fcmp(2, -1); |
| 778 | test_fcmp(2, 2); |
| 779 | test_fcmp(2, 3); |
| 780 | test_fcvt(0.5); |
| 781 | test_fcvt(-0.5); |
| 782 | test_fcvt(1.0/7.0); |
| 783 | test_fcvt(-1.0/9.0); |
| 784 | test_fcvt(32768); |
| 785 | test_fcvt(-1e20); |
| 786 | test_fconst(); |
| 787 | // REINSTATE (maybe): test_fbcd(1234567890123456); |
| 788 | // REINSTATE (maybe): test_fbcd(-123451234567890); |
| 789 | // REINSTATE: test_fenv(); |
| 790 | // REINSTATE: test_fcmov(); |
| 791 | } |
| 792 | |
| 793 | /**********************************************/ |
| 794 | #if 0 |
| 795 | |
| 796 | #define TEST_BCD(op, op0, cc_in, cc_mask)\ |
| 797 | {\ |
| 798 | int res, flags;\ |
| 799 | res = op0;\ |
| 800 | flags = cc_in;\ |
| 801 | asm ("push %3\n\t"\ |
| 802 | "popf\n\t"\ |
| 803 | #op "\n\t"\ |
| 804 | "pushf\n\t"\ |
| 805 | "popl %1\n\t"\ |
| 806 | : "=a" (res), "=g" (flags)\ |
| 807 | : "0" (res), "1" (flags));\ |
| 808 | printf("%-10s A=%08x R=%08x CCIN=%04x CC=%04x\n",\ |
| 809 | #op, op0, res, cc_in, flags & cc_mask);\ |
| 810 | } |
| 811 | |
| 812 | void test_bcd(void) |
| 813 | { |
| 814 | TEST_BCD(daa, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 815 | TEST_BCD(daa, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 816 | TEST_BCD(daa, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 817 | TEST_BCD(daa, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 818 | TEST_BCD(daa, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 819 | TEST_BCD(daa, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 820 | TEST_BCD(daa, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 821 | TEST_BCD(daa, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 822 | TEST_BCD(daa, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 823 | TEST_BCD(daa, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 824 | TEST_BCD(daa, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 825 | TEST_BCD(daa, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 826 | TEST_BCD(daa, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 827 | |
| 828 | TEST_BCD(das, 0x12340503, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 829 | TEST_BCD(das, 0x12340506, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 830 | TEST_BCD(das, 0x12340507, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 831 | TEST_BCD(das, 0x12340559, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 832 | TEST_BCD(das, 0x12340560, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 833 | TEST_BCD(das, 0x1234059f, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 834 | TEST_BCD(das, 0x123405a0, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 835 | TEST_BCD(das, 0x12340503, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 836 | TEST_BCD(das, 0x12340506, 0, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 837 | TEST_BCD(das, 0x12340503, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 838 | TEST_BCD(das, 0x12340506, CC_C, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 839 | TEST_BCD(das, 0x12340503, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 840 | TEST_BCD(das, 0x12340506, CC_C | CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_A)); |
| 841 | |
| 842 | TEST_BCD(aaa, 0x12340205, CC_A, (CC_C | CC_A)); |
| 843 | TEST_BCD(aaa, 0x12340306, CC_A, (CC_C | CC_A)); |
| 844 | TEST_BCD(aaa, 0x1234040a, CC_A, (CC_C | CC_A)); |
| 845 | TEST_BCD(aaa, 0x123405fa, CC_A, (CC_C | CC_A)); |
| 846 | TEST_BCD(aaa, 0x12340205, 0, (CC_C | CC_A)); |
| 847 | TEST_BCD(aaa, 0x12340306, 0, (CC_C | CC_A)); |
| 848 | TEST_BCD(aaa, 0x1234040a, 0, (CC_C | CC_A)); |
| 849 | TEST_BCD(aaa, 0x123405fa, 0, (CC_C | CC_A)); |
| 850 | |
| 851 | TEST_BCD(aas, 0x12340205, CC_A, (CC_C | CC_A)); |
| 852 | TEST_BCD(aas, 0x12340306, CC_A, (CC_C | CC_A)); |
| 853 | TEST_BCD(aas, 0x1234040a, CC_A, (CC_C | CC_A)); |
| 854 | TEST_BCD(aas, 0x123405fa, CC_A, (CC_C | CC_A)); |
| 855 | TEST_BCD(aas, 0x12340205, 0, (CC_C | CC_A)); |
| 856 | TEST_BCD(aas, 0x12340306, 0, (CC_C | CC_A)); |
| 857 | TEST_BCD(aas, 0x1234040a, 0, (CC_C | CC_A)); |
| 858 | TEST_BCD(aas, 0x123405fa, 0, (CC_C | CC_A)); |
| 859 | |
| 860 | TEST_BCD(aam, 0x12340547, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)); |
| 861 | TEST_BCD(aad, 0x12340407, CC_A, (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A)); |
| 862 | } |
| 863 | #endif /* 0 */ |
| 864 | |
| 865 | #define TEST_XCHG(op, size, opconst)\ |
| 866 | {\ |
| 867 | int op0, op1;\ |
| 868 | op0 = 0x12345678;\ |
| 869 | op1 = 0xfbca7654;\ |
| 870 | asm(#op " %" size "0, %" size "1" \ |
| 871 | : "=q" (op0), opconst (op1) \ |
| 872 | : "0" (op0), "1" (op1));\ |
| 873 | printf("%-10s A=%08x B=%08x\n",\ |
| 874 | #op, op0, op1);\ |
| 875 | } |
| 876 | |
| 877 | #define TEST_CMPXCHG(op, size, opconst, eax)\ |
| 878 | {\ |
| 879 | int op0, op1;\ |
| 880 | op0 = 0x12345678;\ |
| 881 | op1 = 0xfbca7654;\ |
| 882 | asm(#op " %" size "0, %" size "1" \ |
| 883 | : "=q" (op0), opconst (op1) \ |
| 884 | : "0" (op0), "1" (op1), "a" (eax));\ |
| 885 | printf("%-10s EAX=%08x A=%08x C=%08x\n",\ |
| 886 | #op, eax, op0, op1);\ |
| 887 | } |
| 888 | |
| 889 | void test_xchg(void) |
| 890 | { |
| 891 | TEST_XCHG(xchgl, "", "=q"); |
| 892 | TEST_XCHG(xchgw, "w", "=q"); |
| 893 | TEST_XCHG(xchgb, "b", "=q"); |
| 894 | |
| 895 | TEST_XCHG(xchgl, "", "=m"); |
| 896 | TEST_XCHG(xchgw, "w", "=m"); |
| 897 | TEST_XCHG(xchgb, "b", "=m"); |
| 898 | |
| 899 | #if 0 |
| 900 | TEST_XCHG(xaddl, "", "=q"); |
| 901 | TEST_XCHG(xaddw, "w", "=q"); |
| 902 | TEST_XCHG(xaddb, "b", "=q"); |
| 903 | |
| 904 | { |
| 905 | int res; |
| 906 | res = 0x12345678; |
| 907 | asm("xaddl %1, %0" : "=r" (res) : "0" (res)); |
| 908 | printf("xaddl same res=%08x\n", res); |
| 909 | } |
| 910 | |
| 911 | TEST_XCHG(xaddl, "", "=m"); |
| 912 | TEST_XCHG(xaddw, "w", "=m"); |
| 913 | TEST_XCHG(xaddb, "b", "=m"); |
| 914 | #endif |
| 915 | TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfbca7654); |
| 916 | TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfbca7654); |
| 917 | TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfbca7654); |
| 918 | |
| 919 | TEST_CMPXCHG(cmpxchgl, "", "=q", 0xfffefdfc); |
| 920 | TEST_CMPXCHG(cmpxchgw, "w", "=q", 0xfffefdfc); |
| 921 | TEST_CMPXCHG(cmpxchgb, "b", "=q", 0xfffefdfc); |
| 922 | |
| 923 | TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfbca7654); |
| 924 | TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfbca7654); |
| 925 | TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfbca7654); |
| 926 | |
| 927 | TEST_CMPXCHG(cmpxchgl, "", "=m", 0xfffefdfc); |
| 928 | TEST_CMPXCHG(cmpxchgw, "w", "=m", 0xfffefdfc); |
| 929 | TEST_CMPXCHG(cmpxchgb, "b", "=m", 0xfffefdfc); |
| 930 | #if 0 |
| 931 | { |
| 932 | uint64_t op0, op1, op2; |
| 933 | int i, eflags; |
| 934 | |
| 935 | for(i = 0; i < 2; i++) { |
| 936 | op0 = 0x123456789abcd; |
| 937 | if (i == 0) |
| 938 | op1 = 0xfbca765423456; |
| 939 | else |
| 940 | op1 = op0; |
| 941 | op2 = 0x6532432432434; |
| 942 | asm("cmpxchg8b %1\n" |
| 943 | "pushf\n" |
| 944 | "popl %2\n" |
| 945 | : "=A" (op0), "=m" (op1), "=g" (eflags) |
| 946 | : "0" (op0), "m" (op1), "b" ((int)op2), "c" ((int)(op2 >> 32))); |
| 947 | printf("cmpxchg8b: op0=%016llx op1=%016llx CC=%02x\n", |
| 948 | op0, op1, eflags & CC_Z); |
| 949 | } |
| 950 | } |
| 951 | #endif |
| 952 | } |
| 953 | |
| 954 | /**********************************************/ |
| 955 | /* segmentation tests */ |
| 956 | #if 0 |
| 957 | #include <asm/ldt.h> |
| 958 | #include <linux/unistd.h> |
| 959 | #include <linux/version.h> |
| 960 | |
| 961 | _syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount) |
| 962 | |
| 963 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66) |
| 964 | #define modify_ldt_ldt_s user_desc |
| 965 | #endif |
| 966 | |
| 967 | uint8_t seg_data1[4096]; |
| 968 | uint8_t seg_data2[4096]; |
| 969 | |
| 970 | #define MK_SEL(n) (((n) << 3) | 7) |
| 971 | |
| 972 | #define TEST_LR(op, size, seg, mask)\ |
| 973 | {\ |
| 974 | int res, res2;\ |
| 975 | res = 0x12345678;\ |
| 976 | asm (op " %" size "2, %" size "0\n" \ |
| 977 | "movl $0, %1\n"\ |
| 978 | "jnz 1f\n"\ |
| 979 | "movl $1, %1\n"\ |
| 980 | "1:\n"\ |
| 981 | : "=r" (res), "=r" (res2) : "m" (seg), "0" (res));\ |
| 982 | printf(op ": Z=%d %08x\n", res2, res & ~(mask));\ |
| 983 | } |
| 984 | |
| 985 | /* NOTE: we use Linux modify_ldt syscall */ |
| 986 | void test_segs(void) |
| 987 | { |
| 988 | struct modify_ldt_ldt_s ldt; |
| 989 | long long ldt_table[3]; |
| 990 | int res, res2; |
| 991 | char tmp; |
| 992 | struct { |
| 993 | uint32_t offset; |
| 994 | uint16_t seg; |
| 995 | } __attribute__((packed)) segoff; |
| 996 | |
| 997 | ldt.entry_number = 1; |
| 998 | ldt.base_addr = (unsigned long)&seg_data1; |
| 999 | ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12; |
| 1000 | ldt.seg_32bit = 1; |
| 1001 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 1002 | ldt.read_exec_only = 0; |
| 1003 | ldt.limit_in_pages = 1; |
| 1004 | ldt.seg_not_present = 0; |
| 1005 | ldt.useable = 1; |
| 1006 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1007 | |
| 1008 | ldt.entry_number = 2; |
| 1009 | ldt.base_addr = (unsigned long)&seg_data2; |
| 1010 | ldt.limit = (sizeof(seg_data2) + 0xfff) >> 12; |
| 1011 | ldt.seg_32bit = 1; |
| 1012 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 1013 | ldt.read_exec_only = 0; |
| 1014 | ldt.limit_in_pages = 1; |
| 1015 | ldt.seg_not_present = 0; |
| 1016 | ldt.useable = 1; |
| 1017 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1018 | |
| 1019 | modify_ldt(0, &ldt_table, sizeof(ldt_table)); /* read ldt entries */ |
| 1020 | #if 0 |
| 1021 | { |
| 1022 | int i; |
| 1023 | for(i=0;i<3;i++) |
| 1024 | printf("%d: %016Lx\n", i, ldt_table[i]); |
| 1025 | } |
| 1026 | #endif |
| 1027 | /* do some tests with fs or gs */ |
| 1028 | asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1))); |
| 1029 | |
| 1030 | seg_data1[1] = 0xaa; |
| 1031 | seg_data2[1] = 0x55; |
| 1032 | |
| 1033 | asm volatile ("fs movzbl 0x1, %0" : "=r" (res)); |
| 1034 | printf("FS[1] = %02x\n", res); |
| 1035 | |
| 1036 | asm volatile ("pushl %%gs\n" |
| 1037 | "movl %1, %%gs\n" |
| 1038 | "gs movzbl 0x1, %0\n" |
| 1039 | "popl %%gs\n" |
| 1040 | : "=r" (res) |
| 1041 | : "r" (MK_SEL(2))); |
| 1042 | printf("GS[1] = %02x\n", res); |
| 1043 | |
| 1044 | /* tests with ds/ss (implicit segment case) */ |
| 1045 | tmp = 0xa5; |
| 1046 | asm volatile ("pushl %%ebp\n\t" |
| 1047 | "pushl %%ds\n\t" |
| 1048 | "movl %2, %%ds\n\t" |
| 1049 | "movl %3, %%ebp\n\t" |
| 1050 | "movzbl 0x1, %0\n\t" |
| 1051 | "movzbl (%%ebp), %1\n\t" |
| 1052 | "popl %%ds\n\t" |
| 1053 | "popl %%ebp\n\t" |
| 1054 | : "=r" (res), "=r" (res2) |
| 1055 | : "r" (MK_SEL(1)), "r" (&tmp)); |
| 1056 | printf("DS[1] = %02x\n", res); |
| 1057 | printf("SS[tmp] = %02x\n", res2); |
| 1058 | |
| 1059 | segoff.seg = MK_SEL(2); |
| 1060 | segoff.offset = 0xabcdef12; |
| 1061 | asm volatile("lfs %2, %0\n\t" |
| 1062 | "movl %%fs, %1\n\t" |
| 1063 | : "=r" (res), "=g" (res2) |
| 1064 | : "m" (segoff)); |
| 1065 | printf("FS:reg = %04x:%08x\n", res2, res); |
| 1066 | |
| 1067 | TEST_LR("larw", "w", MK_SEL(2), 0x0100); |
| 1068 | TEST_LR("larl", "", MK_SEL(2), 0x0100); |
| 1069 | TEST_LR("lslw", "w", MK_SEL(2), 0); |
| 1070 | TEST_LR("lsll", "", MK_SEL(2), 0); |
| 1071 | |
| 1072 | TEST_LR("larw", "w", 0xfff8, 0); |
| 1073 | TEST_LR("larl", "", 0xfff8, 0); |
| 1074 | TEST_LR("lslw", "w", 0xfff8, 0); |
| 1075 | TEST_LR("lsll", "", 0xfff8, 0); |
| 1076 | } |
| 1077 | #endif |
| 1078 | |
| 1079 | #if 0 |
| 1080 | /* 16 bit code test */ |
| 1081 | extern char code16_start, code16_end; |
| 1082 | extern char code16_func1; |
| 1083 | extern char code16_func2; |
| 1084 | extern char code16_func3; |
| 1085 | |
| 1086 | void test_code16(void) |
| 1087 | { |
| 1088 | struct modify_ldt_ldt_s ldt; |
| 1089 | int res, res2; |
| 1090 | |
| 1091 | /* build a code segment */ |
| 1092 | ldt.entry_number = 1; |
| 1093 | ldt.base_addr = (unsigned long)&code16_start; |
| 1094 | ldt.limit = &code16_end - &code16_start; |
| 1095 | ldt.seg_32bit = 0; |
| 1096 | ldt.contents = MODIFY_LDT_CONTENTS_CODE; |
| 1097 | ldt.read_exec_only = 0; |
| 1098 | ldt.limit_in_pages = 0; |
| 1099 | ldt.seg_not_present = 0; |
| 1100 | ldt.useable = 1; |
| 1101 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1102 | |
| 1103 | /* call the first function */ |
| 1104 | asm volatile ("lcall %1, %2" |
| 1105 | : "=a" (res) |
| 1106 | : "i" (MK_SEL(1)), "i" (&code16_func1): "memory", "cc"); |
| 1107 | printf("func1() = 0x%08x\n", res); |
| 1108 | asm volatile ("lcall %2, %3" |
| 1109 | : "=a" (res), "=c" (res2) |
| 1110 | : "i" (MK_SEL(1)), "i" (&code16_func2): "memory", "cc"); |
| 1111 | printf("func2() = 0x%08x spdec=%d\n", res, res2); |
| 1112 | asm volatile ("lcall %1, %2" |
| 1113 | : "=a" (res) |
| 1114 | : "i" (MK_SEL(1)), "i" (&code16_func3): "memory", "cc"); |
| 1115 | printf("func3() = 0x%08x\n", res); |
| 1116 | } |
| 1117 | #endif |
| 1118 | |
| 1119 | extern char func_lret32; |
| 1120 | extern char func_iret32; |
| 1121 | |
| 1122 | void test_misc(void) |
| 1123 | { |
| 1124 | // char table[256]; |
| 1125 | // int res, i; |
| 1126 | |
| 1127 | #if 0 |
| 1128 | // REINSTATE |
| 1129 | for(i=0;i<256;i++) table[i] = 256 - i; |
| 1130 | res = 0x12345678; |
| 1131 | asm ("xlat" : "=a" (res) : "b" (table), "0" (res)); |
| 1132 | printf("xlat: EAX=%08x\n", res); |
| 1133 | #endif |
| 1134 | #if 0 |
| 1135 | // REINSTATE |
| 1136 | asm volatile ("pushl %%cs ; call %1" |
| 1137 | : "=a" (res) |
| 1138 | : "m" (func_lret32): "memory", "cc"); |
| 1139 | printf("func_lret32=%x\n", res); |
| 1140 | |
| 1141 | asm volatile ("pushfl ; pushl %%cs ; call %1" |
| 1142 | : "=a" (res) |
| 1143 | : "m" (func_iret32): "memory", "cc"); |
| 1144 | printf("func_iret32=%x\n", res); |
| 1145 | #endif |
| 1146 | #if 0 |
| 1147 | /* specific popl test */ |
| 1148 | asm volatile ("pushq $0x9abcdef12345678 ; popl (%%rsp) ; addq $4,%%rsp" |
| 1149 | : "=g" (res)); |
| 1150 | printf("popl esp=%x\n", res); |
| 1151 | #endif |
| 1152 | #if 0 |
| 1153 | // REINSTATE |
| 1154 | /* specific popw test */ |
| 1155 | asm volatile ("pushq $12345432 ; pushq $0x9abcdef ; popw (%%rsp) ; addl $2, %%rsp ; popq %0" |
| 1156 | : "=g" (res)); |
| 1157 | printf("popw rsp=%x\n", res); |
| 1158 | #endif |
| 1159 | } |
| 1160 | |
| 1161 | uint8_t str_buffer[4096]; |
| 1162 | |
| 1163 | #define TEST_STRING1(OP, size, DF, REP)\ |
| 1164 | {\ |
| 1165 | int64 rsi, rdi, rax, rcx, rflags;\ |
| 1166 | \ |
| 1167 | rsi = (long)(str_buffer + sizeof(str_buffer) / 2);\ |
| 1168 | rdi = (long)(str_buffer + sizeof(str_buffer) / 2) + 16;\ |
| 1169 | rax = 0x12345678;\ |
| 1170 | rcx = 17;\ |
| 1171 | \ |
| 1172 | asm volatile ("pushq $0\n\t"\ |
| 1173 | "popfq\n\t"\ |
| 1174 | DF "\n\t"\ |
| 1175 | REP #OP size "\n\t"\ |
| 1176 | "cld\n\t"\ |
| 1177 | "pushfq\n\t"\ |
| 1178 | "popq %4\n\t"\ |
| 1179 | : "=S" (rsi), "=D" (rdi), "=a" (rax), "=c" (rcx), "=g" (rflags)\ |
| 1180 | : "0" (rsi), "1" (rdi), "2" (rax), "3" (rcx));\ |
| 1181 | printf("%-10s ESI=%016llx EDI=%016llx EAX=%016llx ECX=%016llx EFL=%04llx\n",\ |
| 1182 | REP #OP size, rsi, rdi, rax, rcx,\ |
| 1183 | rflags & (CC_C | CC_P | CC_Z | CC_S | CC_O | CC_A));\ |
| 1184 | } |
| 1185 | |
| 1186 | #define TEST_STRING(OP, REP)\ |
| 1187 | TEST_STRING1(OP, "b", "", REP);\ |
| 1188 | TEST_STRING1(OP, "w", "", REP);\ |
| 1189 | TEST_STRING1(OP, "l", "", REP);\ |
| 1190 | TEST_STRING1(OP, "b", "std", REP);\ |
| 1191 | TEST_STRING1(OP, "w", "std", REP);\ |
| 1192 | TEST_STRING1(OP, "l", "std", REP) |
| 1193 | |
| 1194 | void test_string(void) |
| 1195 | { |
| 1196 | int64 i; |
| 1197 | for(i = 0;i < sizeof(str_buffer); i++) |
| 1198 | str_buffer[i] = i + 0x56; |
| 1199 | TEST_STRING(stos, ""); |
| 1200 | TEST_STRING(stos, "rep "); |
| 1201 | // REINSTATE: TEST_STRING(lods, ""); /* to verify stos */ |
| 1202 | // REINSTATE: TEST_STRING(lods, "rep "); |
| 1203 | TEST_STRING(movs, ""); |
| 1204 | TEST_STRING(movs, "rep "); |
| 1205 | // REINSTATE: TEST_STRING(lods, ""); /* to verify stos */ |
| 1206 | |
| 1207 | /* XXX: better tests */ |
| 1208 | TEST_STRING(scas, ""); |
| 1209 | // REINSTATE: TEST_STRING(scas, "repz "); |
| 1210 | TEST_STRING(scas, "repnz "); |
| 1211 | // REINSTATE: TEST_STRING(cmps, ""); |
| 1212 | TEST_STRING(cmps, "repz "); |
| 1213 | // REINSTATE: TEST_STRING(cmps, "repnz "); |
| 1214 | } |
| 1215 | |
| 1216 | /* VM86 test */ |
| 1217 | #if 0 |
| 1218 | static inline void set_bit(uint8_t *a, unsigned int bit) |
| 1219 | { |
| 1220 | a[bit / 8] |= (1 << (bit % 8)); |
| 1221 | } |
| 1222 | |
| 1223 | static inline uint8_t *seg_to_linear(unsigned int seg, unsigned int reg) |
| 1224 | { |
| 1225 | return (uint8_t *)((seg << 4) + (reg & 0xffff)); |
| 1226 | } |
| 1227 | |
| 1228 | static inline void pushw(struct vm86_regs *r, int val) |
| 1229 | { |
| 1230 | r->esp = (r->esp & ~0xffff) | ((r->esp - 2) & 0xffff); |
| 1231 | *(uint16_t *)seg_to_linear(r->ss, r->esp) = val; |
| 1232 | } |
| 1233 | |
| 1234 | #undef __syscall_return |
| 1235 | #define __syscall_return(type, res) \ |
| 1236 | do { \ |
| 1237 | return (type) (res); \ |
| 1238 | } while (0) |
| 1239 | |
| 1240 | _syscall2(int, vm86, int, func, struct vm86plus_struct *, v86) |
| 1241 | |
| 1242 | extern char vm86_code_start; |
| 1243 | extern char vm86_code_end; |
| 1244 | |
| 1245 | #define VM86_CODE_CS 0x100 |
| 1246 | #define VM86_CODE_IP 0x100 |
| 1247 | |
| 1248 | void test_vm86(void) |
| 1249 | { |
| 1250 | struct vm86plus_struct ctx; |
| 1251 | struct vm86_regs *r; |
| 1252 | uint8_t *vm86_mem; |
| 1253 | int seg, ret; |
| 1254 | |
| 1255 | vm86_mem = mmap((void *)0x00000000, 0x110000, |
| 1256 | PROT_WRITE | PROT_READ | PROT_EXEC, |
| 1257 | MAP_FIXED | MAP_ANON | MAP_PRIVATE, -1, 0); |
| 1258 | if (vm86_mem == MAP_FAILED) { |
| 1259 | printf("ERROR: could not map vm86 memory"); |
| 1260 | return; |
| 1261 | } |
| 1262 | memset(&ctx, 0, sizeof(ctx)); |
| 1263 | |
| 1264 | /* init basic registers */ |
| 1265 | r = &ctx.regs; |
| 1266 | r->eip = VM86_CODE_IP; |
| 1267 | r->esp = 0xfffe; |
| 1268 | seg = VM86_CODE_CS; |
| 1269 | r->cs = seg; |
| 1270 | r->ss = seg; |
| 1271 | r->ds = seg; |
| 1272 | r->es = seg; |
| 1273 | r->fs = seg; |
| 1274 | r->gs = seg; |
| 1275 | r->eflags = VIF_MASK; |
| 1276 | |
| 1277 | /* move code to proper address. We use the same layout as a .com |
| 1278 | dos program. */ |
| 1279 | memcpy(vm86_mem + (VM86_CODE_CS << 4) + VM86_CODE_IP, |
| 1280 | &vm86_code_start, &vm86_code_end - &vm86_code_start); |
| 1281 | |
| 1282 | /* mark int 0x21 as being emulated */ |
| 1283 | set_bit((uint8_t *)&ctx.int_revectored, 0x21); |
| 1284 | |
| 1285 | for(;;) { |
| 1286 | ret = vm86(VM86_ENTER, &ctx); |
| 1287 | switch(VM86_TYPE(ret)) { |
| 1288 | case VM86_INTx: |
| 1289 | { |
| 1290 | int int_num, ah, v; |
| 1291 | |
| 1292 | int_num = VM86_ARG(ret); |
| 1293 | if (int_num != 0x21) |
| 1294 | goto unknown_int; |
| 1295 | ah = (r->eax >> 8) & 0xff; |
| 1296 | switch(ah) { |
| 1297 | case 0x00: /* exit */ |
| 1298 | goto the_end; |
| 1299 | case 0x02: /* write char */ |
| 1300 | { |
| 1301 | uint8_t c = r->edx; |
| 1302 | putchar(c); |
| 1303 | } |
| 1304 | break; |
| 1305 | case 0x09: /* write string */ |
| 1306 | { |
| 1307 | uint8_t c, *ptr; |
| 1308 | ptr = seg_to_linear(r->ds, r->edx); |
| 1309 | for(;;) { |
| 1310 | c = *ptr++; |
| 1311 | if (c == '$') |
| 1312 | break; |
| 1313 | putchar(c); |
| 1314 | } |
| 1315 | r->eax = (r->eax & ~0xff) | '$'; |
| 1316 | } |
| 1317 | break; |
| 1318 | case 0xff: /* extension: write eflags number in edx */ |
| 1319 | v = (int)r->edx; |
| 1320 | #ifndef LINUX_VM86_IOPL_FIX |
| 1321 | v &= ~0x3000; |
| 1322 | #endif |
| 1323 | printf("%08x\n", v); |
| 1324 | break; |
| 1325 | default: |
| 1326 | unknown_int: |
| 1327 | printf("unsupported int 0x%02x\n", int_num); |
| 1328 | goto the_end; |
| 1329 | } |
| 1330 | } |
| 1331 | break; |
| 1332 | case VM86_SIGNAL: |
| 1333 | /* a signal came, we just ignore that */ |
| 1334 | break; |
| 1335 | case VM86_STI: |
| 1336 | break; |
| 1337 | default: |
| 1338 | printf("ERROR: unhandled vm86 return code (0x%x)\n", ret); |
| 1339 | goto the_end; |
| 1340 | } |
| 1341 | } |
| 1342 | the_end: |
| 1343 | printf("VM86 end\n"); |
| 1344 | munmap(vm86_mem, 0x110000); |
| 1345 | } |
| 1346 | #endif |
| 1347 | |
| 1348 | /* exception tests */ |
| 1349 | #if 0 |
| 1350 | #ifndef REG_EAX |
| 1351 | #define REG_EAX EAX |
| 1352 | #define REG_EBX EBX |
| 1353 | #define REG_ECX ECX |
| 1354 | #define REG_EDX EDX |
| 1355 | #define REG_ESI ESI |
| 1356 | #define REG_EDI EDI |
| 1357 | #define REG_EBP EBP |
| 1358 | #define REG_ESP ESP |
| 1359 | #define REG_EIP EIP |
| 1360 | #define REG_EFL EFL |
| 1361 | #define REG_TRAPNO TRAPNO |
| 1362 | #define REG_ERR ERR |
| 1363 | #endif |
| 1364 | |
| 1365 | jmp_buf jmp_env; |
| 1366 | int v1; |
| 1367 | int tab[2]; |
| 1368 | |
| 1369 | void sig_handler(int sig, siginfo_t *info, void *puc) |
| 1370 | { |
| 1371 | struct ucontext *uc = puc; |
| 1372 | |
| 1373 | printf("si_signo=%d si_errno=%d si_code=%d", |
| 1374 | info->si_signo, info->si_errno, info->si_code); |
| 1375 | printf(" si_addr=0x%08lx", |
| 1376 | (unsigned long)info->si_addr); |
| 1377 | printf("\n"); |
| 1378 | |
| 1379 | printf("trapno=0x%02x err=0x%08x", |
| 1380 | uc->uc_mcontext.gregs[REG_TRAPNO], |
| 1381 | uc->uc_mcontext.gregs[REG_ERR]); |
| 1382 | printf(" EIP=0x%08x", uc->uc_mcontext.gregs[REG_EIP]); |
| 1383 | printf("\n"); |
| 1384 | longjmp(jmp_env, 1); |
| 1385 | } |
| 1386 | |
| 1387 | void test_exceptions(void) |
| 1388 | { |
| 1389 | struct modify_ldt_ldt_s ldt; |
| 1390 | struct sigaction act; |
| 1391 | volatile int val; |
| 1392 | |
| 1393 | act.sa_sigaction = sig_handler; |
| 1394 | sigemptyset(&act.sa_mask); |
| 1395 | act.sa_flags = SA_SIGINFO; |
| 1396 | sigaction(SIGFPE, &act, NULL); |
| 1397 | sigaction(SIGILL, &act, NULL); |
| 1398 | sigaction(SIGSEGV, &act, NULL); |
| 1399 | sigaction(SIGBUS, &act, NULL); |
| 1400 | sigaction(SIGTRAP, &act, NULL); |
| 1401 | |
| 1402 | /* test division by zero reporting */ |
| 1403 | printf("DIVZ exception:\n"); |
| 1404 | if (setjmp(jmp_env) == 0) { |
| 1405 | /* now divide by zero */ |
| 1406 | v1 = 0; |
| 1407 | v1 = 2 / v1; |
| 1408 | } |
| 1409 | |
| 1410 | printf("BOUND exception:\n"); |
| 1411 | if (setjmp(jmp_env) == 0) { |
| 1412 | /* bound exception */ |
| 1413 | tab[0] = 1; |
| 1414 | tab[1] = 10; |
| 1415 | asm volatile ("bound %0, %1" : : "r" (11), "m" (tab)); |
| 1416 | } |
| 1417 | |
| 1418 | printf("segment exceptions:\n"); |
| 1419 | if (setjmp(jmp_env) == 0) { |
| 1420 | /* load an invalid segment */ |
| 1421 | asm volatile ("movl %0, %%fs" : : "r" ((0x1234 << 3) | 1)); |
| 1422 | } |
| 1423 | if (setjmp(jmp_env) == 0) { |
| 1424 | /* null data segment is valid */ |
| 1425 | asm volatile ("movl %0, %%fs" : : "r" (3)); |
| 1426 | /* null stack segment */ |
| 1427 | asm volatile ("movl %0, %%ss" : : "r" (3)); |
| 1428 | } |
| 1429 | |
| 1430 | ldt.entry_number = 1; |
| 1431 | ldt.base_addr = (unsigned long)&seg_data1; |
| 1432 | ldt.limit = (sizeof(seg_data1) + 0xfff) >> 12; |
| 1433 | ldt.seg_32bit = 1; |
| 1434 | ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
| 1435 | ldt.read_exec_only = 0; |
| 1436 | ldt.limit_in_pages = 1; |
| 1437 | ldt.seg_not_present = 1; |
| 1438 | ldt.useable = 1; |
| 1439 | modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
| 1440 | |
| 1441 | if (setjmp(jmp_env) == 0) { |
| 1442 | /* segment not present */ |
| 1443 | asm volatile ("movl %0, %%fs" : : "r" (MK_SEL(1))); |
| 1444 | } |
| 1445 | |
| 1446 | /* test SEGV reporting */ |
| 1447 | printf("PF exception:\n"); |
| 1448 | if (setjmp(jmp_env) == 0) { |
| 1449 | val = 1; |
| 1450 | /* we add a nop to test a weird PC retrieval case */ |
| 1451 | asm volatile ("nop"); |
| 1452 | /* now store in an invalid address */ |
| 1453 | *(char *)0x1234 = 1; |
| 1454 | } |
| 1455 | |
| 1456 | /* test SEGV reporting */ |
| 1457 | printf("PF exception:\n"); |
| 1458 | if (setjmp(jmp_env) == 0) { |
| 1459 | val = 1; |
| 1460 | /* read from an invalid address */ |
| 1461 | v1 = *(char *)0x1234; |
| 1462 | } |
| 1463 | |
| 1464 | /* test illegal instruction reporting */ |
| 1465 | printf("UD2 exception:\n"); |
| 1466 | if (setjmp(jmp_env) == 0) { |
| 1467 | /* now execute an invalid instruction */ |
| 1468 | asm volatile("ud2"); |
| 1469 | } |
| 1470 | printf("lock nop exception:\n"); |
| 1471 | if (setjmp(jmp_env) == 0) { |
| 1472 | /* now execute an invalid instruction */ |
| 1473 | asm volatile("lock nop"); |
| 1474 | } |
| 1475 | |
| 1476 | printf("INT exception:\n"); |
| 1477 | if (setjmp(jmp_env) == 0) { |
| 1478 | asm volatile ("int $0xfd"); |
| 1479 | } |
| 1480 | if (setjmp(jmp_env) == 0) { |
| 1481 | asm volatile ("int $0x01"); |
| 1482 | } |
| 1483 | if (setjmp(jmp_env) == 0) { |
| 1484 | asm volatile (".byte 0xcd, 0x03"); |
| 1485 | } |
| 1486 | if (setjmp(jmp_env) == 0) { |
| 1487 | asm volatile ("int $0x04"); |
| 1488 | } |
| 1489 | if (setjmp(jmp_env) == 0) { |
| 1490 | asm volatile ("int $0x05"); |
| 1491 | } |
| 1492 | |
| 1493 | printf("INT3 exception:\n"); |
| 1494 | if (setjmp(jmp_env) == 0) { |
| 1495 | asm volatile ("int3"); |
| 1496 | } |
| 1497 | |
| 1498 | printf("CLI exception:\n"); |
| 1499 | if (setjmp(jmp_env) == 0) { |
| 1500 | asm volatile ("cli"); |
| 1501 | } |
| 1502 | |
| 1503 | printf("STI exception:\n"); |
| 1504 | if (setjmp(jmp_env) == 0) { |
| 1505 | asm volatile ("cli"); |
| 1506 | } |
| 1507 | |
| 1508 | printf("INTO exception:\n"); |
| 1509 | if (setjmp(jmp_env) == 0) { |
| 1510 | /* overflow exception */ |
| 1511 | asm volatile ("addl $1, %0 ; into" : : "r" (0x7fffffff)); |
| 1512 | } |
| 1513 | |
| 1514 | printf("OUTB exception:\n"); |
| 1515 | if (setjmp(jmp_env) == 0) { |
| 1516 | asm volatile ("outb %%al, %%dx" : : "d" (0x4321), "a" (0)); |
| 1517 | } |
| 1518 | |
| 1519 | printf("INB exception:\n"); |
| 1520 | if (setjmp(jmp_env) == 0) { |
| 1521 | asm volatile ("inb %%dx, %%al" : "=a" (val) : "d" (0x4321)); |
| 1522 | } |
| 1523 | |
| 1524 | printf("REP OUTSB exception:\n"); |
| 1525 | if (setjmp(jmp_env) == 0) { |
| 1526 | asm volatile ("rep outsb" : : "d" (0x4321), "S" (tab), "c" (1)); |
| 1527 | } |
| 1528 | |
| 1529 | printf("REP INSB exception:\n"); |
| 1530 | if (setjmp(jmp_env) == 0) { |
| 1531 | asm volatile ("rep insb" : : "d" (0x4321), "D" (tab), "c" (1)); |
| 1532 | } |
| 1533 | |
| 1534 | printf("HLT exception:\n"); |
| 1535 | if (setjmp(jmp_env) == 0) { |
| 1536 | asm volatile ("hlt"); |
| 1537 | } |
| 1538 | |
| 1539 | printf("single step exception:\n"); |
| 1540 | val = 0; |
| 1541 | if (setjmp(jmp_env) == 0) { |
| 1542 | asm volatile ("pushf\n" |
| 1543 | "orl $0x00100, (%%esp)\n" |
| 1544 | "popf\n" |
| 1545 | "movl $0xabcd, %0\n" |
| 1546 | "movl $0x0, %0\n" : "=m" (val) : : "cc", "memory"); |
| 1547 | } |
| 1548 | printf("val=0x%x\n", val); |
| 1549 | } |
| 1550 | |
| 1551 | /* specific precise single step test */ |
| 1552 | void sig_trap_handler(int sig, siginfo_t *info, void *puc) |
| 1553 | { |
| 1554 | struct ucontext *uc = puc; |
| 1555 | printf("EIP=0x%08x\n", uc->uc_mcontext.gregs[REG_EIP]); |
| 1556 | } |
| 1557 | |
| 1558 | const uint8_t sstep_buf1[4] = { 1, 2, 3, 4}; |
| 1559 | uint8_t sstep_buf2[4]; |
| 1560 | |
| 1561 | void test_single_step(void) |
| 1562 | { |
| 1563 | struct sigaction act; |
| 1564 | volatile int val; |
| 1565 | int i; |
| 1566 | |
| 1567 | val = 0; |
| 1568 | act.sa_sigaction = sig_trap_handler; |
| 1569 | sigemptyset(&act.sa_mask); |
| 1570 | act.sa_flags = SA_SIGINFO; |
| 1571 | sigaction(SIGTRAP, &act, NULL); |
| 1572 | asm volatile ("pushf\n" |
| 1573 | "orl $0x00100, (%%esp)\n" |
| 1574 | "popf\n" |
| 1575 | "movl $0xabcd, %0\n" |
| 1576 | |
| 1577 | /* jmp test */ |
| 1578 | "movl $3, %%ecx\n" |
| 1579 | "1:\n" |
| 1580 | "addl $1, %0\n" |
| 1581 | "decl %%ecx\n" |
| 1582 | "jnz 1b\n" |
| 1583 | |
| 1584 | /* movsb: the single step should stop at each movsb iteration */ |
| 1585 | "movl $sstep_buf1, %%esi\n" |
| 1586 | "movl $sstep_buf2, %%edi\n" |
| 1587 | "movl $0, %%ecx\n" |
| 1588 | "rep movsb\n" |
| 1589 | "movl $3, %%ecx\n" |
| 1590 | "rep movsb\n" |
| 1591 | "movl $1, %%ecx\n" |
| 1592 | "rep movsb\n" |
| 1593 | |
| 1594 | /* cmpsb: the single step should stop at each cmpsb iteration */ |
| 1595 | "movl $sstep_buf1, %%esi\n" |
| 1596 | "movl $sstep_buf2, %%edi\n" |
| 1597 | "movl $0, %%ecx\n" |
| 1598 | "rep cmpsb\n" |
| 1599 | "movl $4, %%ecx\n" |
| 1600 | "rep cmpsb\n" |
| 1601 | |
| 1602 | /* getpid() syscall: single step should skip one |
| 1603 | instruction */ |
| 1604 | "movl $20, %%eax\n" |
| 1605 | "int $0x80\n" |
| 1606 | "movl $0, %%eax\n" |
| 1607 | |
| 1608 | /* when modifying SS, trace is not done on the next |
| 1609 | instruction */ |
| 1610 | "movl %%ss, %%ecx\n" |
| 1611 | "movl %%ecx, %%ss\n" |
| 1612 | "addl $1, %0\n" |
| 1613 | "movl $1, %%eax\n" |
| 1614 | "movl %%ecx, %%ss\n" |
| 1615 | "jmp 1f\n" |
| 1616 | "addl $1, %0\n" |
| 1617 | "1:\n" |
| 1618 | "movl $1, %%eax\n" |
| 1619 | "pushl %%ecx\n" |
| 1620 | "popl %%ss\n" |
| 1621 | "addl $1, %0\n" |
| 1622 | "movl $1, %%eax\n" |
| 1623 | |
| 1624 | "pushf\n" |
| 1625 | "andl $~0x00100, (%%esp)\n" |
| 1626 | "popf\n" |
| 1627 | : "=m" (val) |
| 1628 | : |
| 1629 | : "cc", "memory", "eax", "ecx", "esi", "edi"); |
| 1630 | printf("val=%d\n", val); |
| 1631 | for(i = 0; i < 4; i++) |
| 1632 | printf("sstep_buf2[%d] = %d\n", i, sstep_buf2[i]); |
| 1633 | } |
| 1634 | |
| 1635 | /* self modifying code test */ |
| 1636 | uint8_t code[] = { |
| 1637 | 0xb8, 0x1, 0x00, 0x00, 0x00, /* movl $1, %eax */ |
| 1638 | 0xc3, /* ret */ |
| 1639 | }; |
| 1640 | |
| 1641 | asm("smc_code2:\n" |
| 1642 | "movl 4(%esp), %eax\n" |
| 1643 | "movl %eax, smc_patch_addr2 + 1\n" |
| 1644 | "nop\n" |
| 1645 | "nop\n" |
| 1646 | "nop\n" |
| 1647 | "nop\n" |
| 1648 | "nop\n" |
| 1649 | "nop\n" |
| 1650 | "nop\n" |
| 1651 | "nop\n" |
| 1652 | "smc_patch_addr2:\n" |
| 1653 | "movl $1, %eax\n" |
| 1654 | "ret\n"); |
| 1655 | |
| 1656 | typedef int FuncType(void); |
| 1657 | extern int smc_code2(int); |
| 1658 | void test_self_modifying_code(void) |
| 1659 | { |
| 1660 | int i; |
| 1661 | |
| 1662 | printf("self modifying code:\n"); |
| 1663 | printf("func1 = 0x%x\n", ((FuncType *)code)()); |
| 1664 | for(i = 2; i <= 4; i++) { |
| 1665 | code[1] = i; |
| 1666 | printf("func%d = 0x%x\n", i, ((FuncType *)code)()); |
| 1667 | } |
| 1668 | |
| 1669 | /* more difficult test : the modified code is just after the |
| 1670 | modifying instruction. It is forbidden in Intel specs, but it |
| 1671 | is used by old DOS programs */ |
| 1672 | for(i = 2; i <= 4; i++) { |
| 1673 | printf("smc_code2(%d) = %d\n", i, smc_code2(i)); |
| 1674 | } |
| 1675 | } |
| 1676 | |
| 1677 | static void *call_end __init_call = NULL; |
| 1678 | #endif |
| 1679 | |
| 1680 | int main(int argc, char **argv) |
| 1681 | { |
| 1682 | void **ptr; |
| 1683 | void (*func)(void); |
| 1684 | |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 1685 | #if 1 |
| 1686 | ptr = &call_start + 1; |
| 1687 | while (*ptr != NULL) { |
| 1688 | func = *ptr++; |
| 1689 | func(); |
| 1690 | } |
| 1691 | #endif |
sewardj | 8edfde7 | 2005-04-07 01:56:21 +0000 | [diff] [blame] | 1692 | test_bsx(); //REINSTATE64 |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 1693 | test_mul(); |
| 1694 | test_jcc(); |
| 1695 | // test_floats(); REINSTATE64 |
| 1696 | //test_bcd(); |
| 1697 | //test_xchg(); REINSTATE64 |
sewardj | 871a95c | 2005-02-19 22:46:11 +0000 | [diff] [blame] | 1698 | test_string(); |
sewardj | 96f47ac | 2005-02-19 15:20:43 +0000 | [diff] [blame] | 1699 | //test_misc(); // REINSTATE |
| 1700 | test_lea(); |
| 1701 | // test_segs(); |
| 1702 | //test_code16(); |
| 1703 | //test_vm86(); |
| 1704 | //test_exceptions(); |
| 1705 | //test_self_modifying_code(); |
| 1706 | //test_single_step(); |
| 1707 | printf("bye\n"); |
| 1708 | return 0; |
| 1709 | } |