t_ptrace_i386_wait.h revision 1.2.4.1
1 /* $NetBSD: t_ptrace_i386_wait.h,v 1.2.4.1 2019/06/10 22:10:05 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2016, 2017, 2018, 2019 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #if defined(__i386__) 30 ATF_TC(i386_regs1); 31 ATF_TC_HEAD(i386_regs1, tc) 32 { 33 atf_tc_set_md_var(tc, "descr", 34 "Call PT_GETREGS and iterate over General Purpose registers"); 35 } 36 37 ATF_TC_BODY(i386_regs1, tc) 38 { 39 const int exitval = 5; 40 const int sigval = SIGSTOP; 41 pid_t child, wpid; 42 #if defined(TWAIT_HAVE_STATUS) 43 int status; 44 #endif 45 struct reg r; 46 47 DPRINTF("Before forking process PID=%d\n", getpid()); 48 SYSCALL_REQUIRE((child = fork()) != -1); 49 if (child == 0) { 50 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 51 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 52 53 DPRINTF("Before raising %s from child\n", strsignal(sigval)); 54 FORKEE_ASSERT(raise(sigval) == 0); 55 56 DPRINTF("Before exiting of the child process\n"); 57 _exit(exitval); 58 } 59 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 60 61 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 62 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 63 64 validate_status_stopped(status, sigval); 65 66 DPRINTF("Call GETREGS for the child process\n"); 67 SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &r, 0) != -1); 68 69 DPRINTF("EAX=%#" PRIxREGISTER "\n", r.r_eax); 70 DPRINTF("EBX=%#" PRIxREGISTER "\n", r.r_ebx); 71 DPRINTF("ECX=%#" PRIxREGISTER "\n", r.r_ecx); 72 DPRINTF("EDX=%#" PRIxREGISTER "\n", r.r_edx); 73 74 DPRINTF("ESP=%#" PRIxREGISTER "\n", r.r_esp); 75 DPRINTF("EBP=%#" PRIxREGISTER "\n", r.r_ebp); 76 77 DPRINTF("ESI=%#" PRIxREGISTER "\n", r.r_esi); 78 DPRINTF("EDI=%#" PRIxREGISTER "\n", r.r_edi); 79 80 DPRINTF("EIP=%#" PRIxREGISTER "\n", r.r_eip); 81 82 DPRINTF("EFLAGS=%#" PRIxREGISTER "\n", r.r_eflags); 83 84 DPRINTF("CS=%#" PRIxREGISTER "\n", r.r_cs); 85 DPRINTF("SS=%#" PRIxREGISTER "\n", r.r_ss); 86 DPRINTF("DS=%#" PRIxREGISTER "\n", r.r_ds); 87 DPRINTF("ES=%#" PRIxREGISTER "\n", r.r_es); 88 DPRINTF("FS=%#" PRIxREGISTER "\n", r.r_fs); 89 DPRINTF("GS=%#" PRIxREGISTER "\n", r.r_gs); 90 91 DPRINTF("Before resuming the child process where it left off and " 92 "without signal to be sent\n"); 93 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 94 95 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 96 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 97 98 validate_status_exited(status, exitval); 99 100 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 101 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 102 } 103 104 ATF_TC(i386_regs_gp_read); 105 ATF_TC_HEAD(i386_regs_gp_read, tc) 106 { 107 atf_tc_set_md_var(tc, "descr", 108 "Set general-purpose reg values from debugged program and read " 109 "them via PT_GETREGS, comparing values against expected."); 110 } 111 112 ATF_TC_BODY(i386_regs_gp_read, tc) 113 { 114 const int exitval = 5; 115 pid_t child, wpid; 116 #if defined(TWAIT_HAVE_STATUS) 117 const int sigval = SIGTRAP; 118 int status; 119 #endif 120 struct reg gpr; 121 122 const uint32_t eax = 0x00010203; 123 const uint32_t ebx = 0x10111213; 124 const uint32_t ecx = 0x20212223; 125 const uint32_t edx = 0x30313233; 126 const uint32_t esi = 0x40414243; 127 const uint32_t edi = 0x50515253; 128 129 DPRINTF("Before forking process PID=%d\n", getpid()); 130 SYSCALL_REQUIRE((child = fork()) != -1); 131 if (child == 0) { 132 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 133 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 134 135 DPRINTF("Before running assembly from child\n"); 136 137 __asm__ __volatile__( 138 "int3\n\t" 139 : 140 : "a"(eax), "b"(ebx), "c"(ecx), "d"(edx), "S"(esi), "D"(edi) 141 : 142 ); 143 144 DPRINTF("Before exiting of the child process\n"); 145 _exit(exitval); 146 } 147 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 148 149 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 150 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 151 152 validate_status_stopped(status, sigval); 153 154 DPRINTF("Call GETREGS for the child process\n"); 155 SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1); 156 157 ATF_CHECK_EQ((uint32_t)gpr.r_eax, eax); 158 ATF_CHECK_EQ((uint32_t)gpr.r_ebx, ebx); 159 ATF_CHECK_EQ((uint32_t)gpr.r_ecx, ecx); 160 ATF_CHECK_EQ((uint32_t)gpr.r_edx, edx); 161 ATF_CHECK_EQ((uint32_t)gpr.r_esi, esi); 162 ATF_CHECK_EQ((uint32_t)gpr.r_edi, edi); 163 164 DPRINTF("Before resuming the child process where it left off and " 165 "without signal to be sent\n"); 166 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 167 168 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 169 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 170 171 validate_status_exited(status, exitval); 172 173 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 174 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 175 } 176 177 ATF_TC(i386_regs_gp_write); 178 ATF_TC_HEAD(i386_regs_gp_write, tc) 179 { 180 atf_tc_set_md_var(tc, "descr", 181 "Set general-purpose reg values into a debugged program via " 182 "PT_SETREGS and compare the result against expected."); 183 } 184 185 ATF_TC_BODY(i386_regs_gp_write, tc) 186 { 187 const int exitval = 5; 188 pid_t child, wpid; 189 #if defined(TWAIT_HAVE_STATUS) 190 const int sigval = SIGTRAP; 191 int status; 192 #endif 193 struct reg gpr; 194 195 const uint32_t eax = 0x00010203; 196 const uint32_t ebx = 0x10111213; 197 const uint32_t ecx = 0x20212223; 198 const uint32_t edx = 0x30313233; 199 const uint32_t esi = 0x40414243; 200 const uint32_t edi = 0x50515253; 201 202 DPRINTF("Before forking process PID=%d\n", getpid()); 203 SYSCALL_REQUIRE((child = fork()) != -1); 204 if (child == 0) { 205 const uint64_t fill = 0x0F0F0F0F; 206 uint32_t v_eax, v_ebx, v_ecx, v_edx, v_esi, v_edi; 207 208 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 209 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 210 211 DPRINTF("Before running assembly from child\n"); 212 213 __asm__ __volatile__( 214 /* fill registers with clobber pattern */ 215 "movl %6, %%eax\n\t" 216 "movl %6, %%ebx\n\t" 217 "movl %6, %%ecx\n\t" 218 "movl %6, %%edx\n\t" 219 "movl %6, %%esi\n\t" 220 "movl %6, %%edi\n\t" 221 "\n\t" 222 "int3\n\t" 223 : "=a"(v_eax), "=b"(v_ebx), "=c"(v_ecx), "=d"(v_edx), "=S"(v_esi), 224 "=D"(v_edi) 225 : "g"(fill) 226 : 227 ); 228 229 DPRINTF("Before comparing results\n"); 230 FORKEE_ASSERT_EQ(v_eax, eax); 231 FORKEE_ASSERT_EQ(v_ebx, ebx); 232 FORKEE_ASSERT_EQ(v_ecx, ecx); 233 FORKEE_ASSERT_EQ(v_edx, edx); 234 FORKEE_ASSERT_EQ(v_esi, esi); 235 FORKEE_ASSERT_EQ(v_edi, edi); 236 237 DPRINTF("Before exiting of the child process\n"); 238 _exit(exitval); 239 } 240 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 241 242 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 243 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 244 245 validate_status_stopped(status, sigval); 246 247 DPRINTF("Call GETREGS for the child process\n"); 248 SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1); 249 250 gpr.r_eax = eax; 251 gpr.r_ebx = ebx; 252 gpr.r_ecx = ecx; 253 gpr.r_edx = edx; 254 gpr.r_esi = esi; 255 gpr.r_edi = edi; 256 257 DPRINTF("Call SETREGS for the child process\n"); 258 SYSCALL_REQUIRE(ptrace(PT_SETREGS, child, &gpr, 0) != -1); 259 260 DPRINTF("Before resuming the child process where it left off and " 261 "without signal to be sent\n"); 262 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 263 264 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 265 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 266 267 validate_status_exited(status, exitval); 268 269 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 270 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 271 } 272 273 ATF_TC(i386_regs_ebp_esp_read); 274 ATF_TC_HEAD(i386_regs_ebp_esp_read, tc) 275 { 276 atf_tc_set_md_var(tc, "descr", 277 "Set EBP & ESP reg values from debugged program and read " 278 "them via PT_GETREGS, comparing values against expected."); 279 } 280 281 ATF_TC_BODY(i386_regs_ebp_esp_read, tc) 282 { 283 const int exitval = 5; 284 pid_t child, wpid; 285 #if defined(TWAIT_HAVE_STATUS) 286 const int sigval = SIGTRAP; 287 int status; 288 #endif 289 struct reg gpr; 290 291 const uint32_t esp = 0x60616263; 292 const uint32_t ebp = 0x70717273; 293 294 DPRINTF("Before forking process PID=%d\n", getpid()); 295 SYSCALL_REQUIRE((child = fork()) != -1); 296 if (child == 0) { 297 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 298 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 299 300 DPRINTF("Before running assembly from child\n"); 301 302 __asm__ __volatile__( 303 /* ebp & ebp are a bit tricky, we must not clobber them */ 304 "movl %%esp, %%eax\n\t" 305 "movl %%ebp, %%ebx\n\t" 306 "movl %0, %%esp\n\t" 307 "movl %1, %%ebp\n\t" 308 "\n\t" 309 "int3\n\t" 310 "\n\t" 311 "movl %%eax, %%esp\n\t" 312 "movl %%ebx, %%ebp\n\t" 313 : 314 : "ri"(esp), "ri"(ebp) 315 : "%eax", "%ebx" 316 ); 317 318 DPRINTF("Before exiting of the child process\n"); 319 _exit(exitval); 320 } 321 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 322 323 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 324 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 325 326 validate_status_stopped(status, sigval); 327 328 DPRINTF("Call GETREGS for the child process\n"); 329 SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1); 330 331 ATF_CHECK_EQ((uint32_t)gpr.r_esp, esp); 332 ATF_CHECK_EQ((uint32_t)gpr.r_ebp, ebp); 333 334 DPRINTF("Before resuming the child process where it left off and " 335 "without signal to be sent\n"); 336 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 337 338 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 339 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 340 341 validate_status_exited(status, exitval); 342 343 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 344 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 345 } 346 347 ATF_TC(i386_regs_ebp_esp_write); 348 ATF_TC_HEAD(i386_regs_ebp_esp_write, tc) 349 { 350 atf_tc_set_md_var(tc, "descr", 351 "Set EBP & ESP reg values into a debugged program via " 352 "PT_SETREGS and compare the result against expected."); 353 } 354 355 ATF_TC_BODY(i386_regs_ebp_esp_write, tc) 356 { 357 const int exitval = 5; 358 pid_t child, wpid; 359 #if defined(TWAIT_HAVE_STATUS) 360 const int sigval = SIGTRAP; 361 int status; 362 #endif 363 struct reg gpr; 364 365 const uint32_t esp = 0x60616263; 366 const uint32_t ebp = 0x70717273; 367 368 DPRINTF("Before forking process PID=%d\n", getpid()); 369 SYSCALL_REQUIRE((child = fork()) != -1); 370 if (child == 0) { 371 const uint64_t fill = 0x0F0F0F0F; 372 uint32_t v_esp, v_ebp; 373 374 DPRINTF("Before calling PT_TRACE_ME from child %d\n", getpid()); 375 FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); 376 377 DPRINTF("Before running assembly from child\n"); 378 379 __asm__ __volatile__( 380 /* save original ebp & esp using our output registers */ 381 "movl %%esp, %0\n\t" 382 "movl %%ebp, %1\n\t" 383 /* fill them with clobber pattern */ 384 "movl %2, %%esp\n\t" 385 "movl %2, %%ebp\n\t" 386 "\n\t" 387 "int3\n\t" 388 "\n\t" 389 /* restore ebp & esp, and save the result */ 390 "xchgl %%esp, %0\n\t" 391 "xchgl %%ebp, %1\n\t" 392 : "=r"(v_esp), "=r"(v_ebp) 393 : "g"(fill) 394 : 395 ); 396 397 DPRINTF("Before comparing results\n"); 398 FORKEE_ASSERT_EQ(v_esp, esp); 399 FORKEE_ASSERT_EQ(v_ebp, ebp); 400 401 DPRINTF("Before exiting of the child process\n"); 402 _exit(exitval); 403 } 404 DPRINTF("Parent process PID=%d, child's PID=%d\n", getpid(), child); 405 406 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 407 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 408 409 validate_status_stopped(status, sigval); 410 411 DPRINTF("Call GETREGS for the child process\n"); 412 SYSCALL_REQUIRE(ptrace(PT_GETREGS, child, &gpr, 0) != -1); 413 414 gpr.r_esp = esp; 415 gpr.r_ebp = ebp; 416 417 DPRINTF("Call SETREGS for the child process\n"); 418 SYSCALL_REQUIRE(ptrace(PT_SETREGS, child, &gpr, 0) != -1); 419 420 DPRINTF("Before resuming the child process where it left off and " 421 "without signal to be sent\n"); 422 SYSCALL_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); 423 424 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 425 TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); 426 427 validate_status_exited(status, exitval); 428 429 DPRINTF("Before calling %s() for the child\n", TWAIT_FNAME); 430 TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); 431 } 432 433 #define ATF_TP_ADD_TCS_PTRACE_WAIT_I386() \ 434 ATF_TP_ADD_TC_HAVE_GPREGS(tp, i386_regs1); \ 435 ATF_TP_ADD_TC_HAVE_GPREGS(tp, i386_regs_gp_read); \ 436 ATF_TP_ADD_TC_HAVE_GPREGS(tp, i386_regs_gp_write); \ 437 ATF_TP_ADD_TC_HAVE_GPREGS(tp, i386_regs_ebp_esp_read); \ 438 ATF_TP_ADD_TC_HAVE_GPREGS(tp, i386_regs_ebp_esp_write); 439 #else 440 #define ATF_TP_ADD_TCS_PTRACE_WAIT_I386() 441 #endif 442
Indexes created Thu Oct 02 14:10:14 GMT 2025