Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl> |
| 3 | * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl> |
| 4 | * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com> |
Wichert Akkerman | 4dc8a2a | 1999-12-23 14:20:14 +0000 | [diff] [blame] | 5 | * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl> |
| 6 | * Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| 7 | * Linux for s390 port by D.J. Barrow |
| 8 | * <barrow_dj@mail.yahoo.com,djbarrow@de.ibm.com> |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. The name of the author may not be used to endorse or promote products |
| 20 | * derived from this software without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 23 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 24 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 25 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 26 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 27 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 31 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | * |
| 33 | * $Id$ |
| 34 | */ |
| 35 | |
| 36 | #include "defs.h" |
| 37 | |
Roland McGrath | d81f1d9 | 2003-01-09 06:53:34 +0000 | [diff] [blame] | 38 | #include <signal.h> |
| 39 | #include <sys/syscall.h> |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 40 | #include <sys/user.h> |
| 41 | #include <sys/param.h> |
| 42 | #include <fcntl.h> |
John Hughes | 1d08dcf | 2001-07-10 13:48:44 +0000 | [diff] [blame] | 43 | #if HAVE_SYS_UIO_H |
| 44 | #include <sys/uio.h> |
| 45 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 46 | #ifdef SUNOS4 |
| 47 | #include <machine/reg.h> |
| 48 | #include <a.out.h> |
| 49 | #include <link.h> |
| 50 | #endif /* SUNOS4 */ |
Wichert Akkerman | 36915a1 | 1999-07-13 15:45:02 +0000 | [diff] [blame] | 51 | |
Wichert Akkerman | 43a7482 | 2000-06-27 17:33:32 +0000 | [diff] [blame] | 52 | #if defined(linux) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 1)) |
Wichert Akkerman | 36915a1 | 1999-07-13 15:45:02 +0000 | [diff] [blame] | 53 | #include <linux/ptrace.h> |
Roland McGrath | 1e85cf9 | 2002-12-16 20:40:54 +0000 | [diff] [blame] | 54 | #endif |
Wichert Akkerman | 36915a1 | 1999-07-13 15:45:02 +0000 | [diff] [blame] | 55 | |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 56 | #if defined(LINUX) && defined(IA64) |
Roland McGrath | d81f1d9 | 2003-01-09 06:53:34 +0000 | [diff] [blame] | 57 | # include <asm/ptrace_offsets.h> |
| 58 | # include <asm/rse.h> |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 59 | #endif |
| 60 | |
Wichert Akkerman | 36915a1 | 1999-07-13 15:45:02 +0000 | [diff] [blame] | 61 | #ifdef HAVE_SYS_REG_H |
| 62 | #include <sys/reg.h> |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 63 | # define PTRACE_PEEKUSR PTRACE_PEEKUSER |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 64 | #elif defined(HAVE_LINUX_PTRACE_H) |
| 65 | #undef PTRACE_SYSCALL |
| 66 | #include <linux/ptrace.h> |
Wichert Akkerman | 2e2553a | 1999-05-09 00:29:58 +0000 | [diff] [blame] | 67 | #endif |
| 68 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 69 | #ifdef SUNOS4_KERNEL_ARCH_KLUDGE |
| 70 | #include <sys/utsname.h> |
| 71 | #endif /* SUNOS4_KERNEL_ARCH_KLUDGE */ |
| 72 | |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 73 | #if defined(LINUX) && defined(SPARC) |
| 74 | |
| 75 | #include <asm/reg.h> |
| 76 | |
| 77 | #if !defined(__GLIBC__) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 78 | |
| 79 | #include <linux/unistd.h> |
| 80 | |
| 81 | #define _hack_syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,\ |
| 82 | type5,arg5,syscall) \ |
| 83 | type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ |
| 84 | { \ |
| 85 | long __res; \ |
| 86 | \ |
| 87 | __asm__ volatile ("or %%g0, %1, %%o0\n\t" \ |
| 88 | "or %%g0, %2, %%o1\n\t" \ |
| 89 | "or %%g0, %3, %%o2\n\t" \ |
| 90 | "or %%g0, %4, %%o3\n\t" \ |
| 91 | "or %%g0, %5, %%o4\n\t" \ |
| 92 | "or %%g0, %6, %%g1\n\t" \ |
| 93 | "t 0x10\n\t" \ |
| 94 | "bcc 1f\n\t" \ |
| 95 | "or %%g0, %%o0, %0\n\t" \ |
| 96 | "sub %%g0, %%o0, %0\n\t" \ |
| 97 | "1:\n\t" \ |
| 98 | : "=r" (__res) \ |
| 99 | : "0" ((long)(arg1)),"1" ((long)(arg2)), \ |
| 100 | "2" ((long)(arg3)),"3" ((long)(arg4)),"4" ((long)(arg5)), \ |
| 101 | "i" (__NR_##syscall) \ |
| 102 | : "g1", "o0", "o1", "o2", "o3", "o4"); \ |
| 103 | if (__res>=0) \ |
| 104 | return (type) __res; \ |
| 105 | errno = -__res; \ |
| 106 | return -1; \ |
| 107 | } |
| 108 | |
| 109 | static _hack_syscall5(int,_ptrace,int,__request,int,__pid,int,__addr,int,__data,int,__addr2,ptrace) |
| 110 | |
| 111 | #define _ptrace |
| 112 | |
| 113 | #endif |
| 114 | |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 115 | #endif |
| 116 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 117 | /* macros */ |
| 118 | #ifndef MAX |
| 119 | #define MAX(a,b) (((a) > (b)) ? (a) : (b)) |
| 120 | #endif |
| 121 | #ifndef MIN |
| 122 | #define MIN(a,b) (((a) < (b)) ? (a) : (b)) |
| 123 | #endif |
| 124 | |
| 125 | void |
| 126 | tv_tv(tv, a, b) |
| 127 | struct timeval *tv; |
| 128 | int a; |
| 129 | int b; |
| 130 | { |
| 131 | tv->tv_sec = a; |
| 132 | tv->tv_usec = b; |
| 133 | } |
| 134 | |
| 135 | int |
| 136 | tv_nz(a) |
| 137 | struct timeval *a; |
| 138 | { |
| 139 | return a->tv_sec || a->tv_usec; |
| 140 | } |
| 141 | |
| 142 | int |
| 143 | tv_cmp(a, b) |
| 144 | struct timeval *a, *b; |
| 145 | { |
| 146 | if (a->tv_sec < b->tv_sec |
| 147 | || (a->tv_sec == b->tv_sec && a->tv_usec < b->tv_usec)) |
| 148 | return -1; |
| 149 | if (a->tv_sec > b->tv_sec |
| 150 | || (a->tv_sec == b->tv_sec && a->tv_usec > b->tv_usec)) |
| 151 | return 1; |
| 152 | return 0; |
| 153 | } |
| 154 | |
| 155 | double |
| 156 | tv_float(tv) |
| 157 | struct timeval *tv; |
| 158 | { |
| 159 | return tv->tv_sec + tv->tv_usec/1000000.0; |
| 160 | } |
| 161 | |
| 162 | void |
| 163 | tv_add(tv, a, b) |
| 164 | struct timeval *tv, *a, *b; |
| 165 | { |
| 166 | tv->tv_sec = a->tv_sec + b->tv_sec; |
| 167 | tv->tv_usec = a->tv_usec + b->tv_usec; |
| 168 | if (tv->tv_usec > 1000000) { |
| 169 | tv->tv_sec++; |
| 170 | tv->tv_usec -= 1000000; |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | void |
| 175 | tv_sub(tv, a, b) |
| 176 | struct timeval *tv, *a, *b; |
| 177 | { |
| 178 | tv->tv_sec = a->tv_sec - b->tv_sec; |
| 179 | tv->tv_usec = a->tv_usec - b->tv_usec; |
| 180 | if (((long) tv->tv_usec) < 0) { |
| 181 | tv->tv_sec--; |
| 182 | tv->tv_usec += 1000000; |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | void |
| 187 | tv_div(tv, a, n) |
| 188 | struct timeval *tv, *a; |
| 189 | int n; |
| 190 | { |
| 191 | tv->tv_usec = (a->tv_sec % n * 1000000 + a->tv_usec + n / 2) / n; |
| 192 | tv->tv_sec = a->tv_sec / n + tv->tv_usec / 1000000; |
| 193 | tv->tv_usec %= 1000000; |
| 194 | } |
| 195 | |
| 196 | void |
| 197 | tv_mul(tv, a, n) |
| 198 | struct timeval *tv, *a; |
| 199 | int n; |
| 200 | { |
| 201 | tv->tv_usec = a->tv_usec * n; |
| 202 | tv->tv_sec = a->tv_sec * n + a->tv_usec / 1000000; |
| 203 | tv->tv_usec %= 1000000; |
| 204 | } |
| 205 | |
| 206 | char * |
| 207 | xlookup(xlat, val) |
| 208 | struct xlat *xlat; |
| 209 | int val; |
| 210 | { |
| 211 | for (; xlat->str != NULL; xlat++) |
| 212 | if (xlat->val == val) |
| 213 | return xlat->str; |
| 214 | return NULL; |
| 215 | } |
| 216 | |
| 217 | /* |
| 218 | * Print entry in struct xlat table, if there. |
| 219 | */ |
| 220 | void |
| 221 | printxval(xlat, val, dflt) |
| 222 | struct xlat *xlat; |
| 223 | int val; |
| 224 | char *dflt; |
| 225 | { |
| 226 | char *str = xlookup(xlat, val); |
| 227 | |
| 228 | if (str) |
| 229 | tprintf("%s", str); |
| 230 | else |
| 231 | tprintf("%#x /* %s */", val, dflt); |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * Interpret `xlat' as an array of flags |
| 236 | * print the entries whose bits are on in `flags' |
| 237 | * return # of flags printed. |
| 238 | */ |
| 239 | int |
| 240 | addflags(xlat, flags) |
| 241 | struct xlat *xlat; |
| 242 | int flags; |
| 243 | { |
| 244 | int n; |
| 245 | |
| 246 | for (n = 0; xlat->str; xlat++) { |
| 247 | if (xlat->val && (flags & xlat->val) == xlat->val) { |
| 248 | tprintf("|%s", xlat->str); |
| 249 | flags &= ~xlat->val; |
| 250 | n++; |
| 251 | } |
| 252 | } |
| 253 | if (flags) { |
| 254 | tprintf("|%#x", flags); |
| 255 | n++; |
| 256 | } |
| 257 | return n; |
| 258 | } |
| 259 | |
| 260 | int |
| 261 | printflags(xlat, flags) |
| 262 | struct xlat *xlat; |
| 263 | int flags; |
| 264 | { |
| 265 | int n; |
| 266 | char *sep; |
| 267 | |
| 268 | if (flags == 0 && xlat->val == 0) { |
| 269 | tprintf("%s", xlat->str); |
| 270 | return 1; |
| 271 | } |
| 272 | |
| 273 | sep = ""; |
| 274 | for (n = 0; xlat->str; xlat++) { |
| 275 | if (xlat->val && (flags & xlat->val) == xlat->val) { |
| 276 | tprintf("%s%s", sep, xlat->str); |
| 277 | flags &= ~xlat->val; |
| 278 | sep = "|"; |
| 279 | n++; |
| 280 | } |
| 281 | } |
| 282 | if (flags) { |
| 283 | tprintf("%s%#x", sep, flags); |
| 284 | n++; |
| 285 | } |
| 286 | return n; |
| 287 | } |
| 288 | |
| 289 | void |
| 290 | printnum(tcp, addr, fmt) |
| 291 | struct tcb *tcp; |
| 292 | long addr; |
| 293 | char *fmt; |
| 294 | { |
| 295 | int num; |
| 296 | |
| 297 | if (!addr) { |
| 298 | tprintf("NULL"); |
| 299 | return; |
| 300 | } |
| 301 | if (umove(tcp, addr, &num) < 0) { |
| 302 | tprintf("%#lx", addr); |
| 303 | return; |
| 304 | } |
| 305 | tprintf("["); |
| 306 | tprintf(fmt, num); |
| 307 | tprintf("]"); |
| 308 | } |
| 309 | |
| 310 | static char path[MAXPATHLEN + 1]; |
| 311 | |
| 312 | void |
| 313 | string_quote(str) |
| 314 | char *str; |
| 315 | { |
| 316 | char buf[2 * MAXPATHLEN + 1]; |
| 317 | char *s; |
| 318 | |
| 319 | if (!strpbrk(str, "\"\'\\")) { |
| 320 | tprintf("\"%s\"", str); |
| 321 | return; |
| 322 | } |
| 323 | for (s = buf; *str; str++) { |
| 324 | switch (*str) { |
| 325 | case '\"': case '\'': case '\\': |
| 326 | *s++ = '\\'; *s++ = *str; break; |
| 327 | default: |
| 328 | *s++ = *str; break; |
| 329 | } |
| 330 | } |
| 331 | *s = '\0'; |
| 332 | tprintf("\"%s\"", buf); |
| 333 | } |
| 334 | |
| 335 | void |
| 336 | printpath(tcp, addr) |
| 337 | struct tcb *tcp; |
| 338 | long addr; |
| 339 | { |
| 340 | if (umovestr(tcp, addr, MAXPATHLEN, path) < 0) |
| 341 | tprintf("%#lx", addr); |
| 342 | else |
| 343 | string_quote(path); |
| 344 | return; |
| 345 | } |
| 346 | |
| 347 | void |
| 348 | printpathn(tcp, addr, n) |
| 349 | struct tcb *tcp; |
| 350 | long addr; |
| 351 | int n; |
| 352 | { |
| 353 | if (umovestr(tcp, addr, n, path) < 0) |
| 354 | tprintf("%#lx", addr); |
| 355 | else { |
| 356 | path[n] = '\0'; |
| 357 | string_quote(path); |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | void |
| 362 | printstr(tcp, addr, len) |
| 363 | struct tcb *tcp; |
| 364 | long addr; |
| 365 | int len; |
| 366 | { |
| 367 | static unsigned char *str = NULL; |
| 368 | static char *outstr; |
| 369 | int i, n, c, usehex; |
| 370 | char *s, *outend; |
| 371 | |
| 372 | if (!addr) { |
| 373 | tprintf("NULL"); |
| 374 | return; |
| 375 | } |
| 376 | if (!str) { |
| 377 | if ((str = malloc(max_strlen)) == NULL |
| 378 | || (outstr = malloc(2*max_strlen)) == NULL) { |
| 379 | fprintf(stderr, "printstr: no memory\n"); |
| 380 | tprintf("%#lx", addr); |
| 381 | return; |
| 382 | } |
| 383 | } |
Wichert Akkerman | 2e2553a | 1999-05-09 00:29:58 +0000 | [diff] [blame] | 384 | outend = outstr + max_strlen * 2 - 10; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 385 | if (len < 0) { |
| 386 | n = max_strlen; |
| 387 | if (umovestr(tcp, addr, n, (char *) str) < 0) { |
| 388 | tprintf("%#lx", addr); |
| 389 | return; |
| 390 | } |
| 391 | } |
| 392 | else { |
| 393 | n = MIN(len, max_strlen); |
| 394 | if (umoven(tcp, addr, n, (char *) str) < 0) { |
| 395 | tprintf("%#lx", addr); |
| 396 | return; |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | usehex = 0; |
| 401 | if (xflag > 1) |
| 402 | usehex = 1; |
| 403 | else if (xflag) { |
| 404 | for (i = 0; i < n; i++) { |
| 405 | c = str[i]; |
| 406 | if (len < 0 && c == '\0') |
| 407 | break; |
| 408 | if (!isprint(c) && !isspace(c)) { |
| 409 | usehex = 1; |
| 410 | break; |
| 411 | } |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | s = outstr; |
| 416 | *s++ = '\"'; |
| 417 | |
| 418 | if (usehex) { |
| 419 | for (i = 0; i < n; i++) { |
| 420 | c = str[i]; |
| 421 | if (len < 0 && c == '\0') |
| 422 | break; |
| 423 | sprintf(s, "\\x%02x", c); |
| 424 | s += 4; |
| 425 | if (s > outend) |
| 426 | break; |
| 427 | } |
| 428 | } |
| 429 | else { |
| 430 | for (i = 0; i < n; i++) { |
| 431 | c = str[i]; |
| 432 | if (len < 0 && c == '\0') |
| 433 | break; |
| 434 | switch (c) { |
| 435 | case '\"': case '\'': case '\\': |
| 436 | *s++ = '\\'; *s++ = c; break; |
| 437 | case '\f': |
| 438 | *s++ = '\\'; *s++ = 'f'; break; |
| 439 | case '\n': |
| 440 | *s++ = '\\'; *s++ = 'n'; break; |
| 441 | case '\r': |
| 442 | *s++ = '\\'; *s++ = 'r'; break; |
| 443 | case '\t': |
| 444 | *s++ = '\\'; *s++ = 't'; break; |
| 445 | case '\v': |
| 446 | *s++ = '\\'; *s++ = 'v'; break; |
| 447 | default: |
| 448 | if (isprint(c)) |
| 449 | *s++ = c; |
| 450 | else if (i < n - 1 && isdigit(str[i + 1])) { |
| 451 | sprintf(s, "\\%03o", c); |
| 452 | s += 4; |
| 453 | } |
| 454 | else { |
| 455 | sprintf(s, "\\%o", c); |
| 456 | s += strlen(s); |
| 457 | } |
| 458 | break; |
| 459 | } |
| 460 | if (s > outend) |
| 461 | break; |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | *s++ = '\"'; |
| 466 | if (i < len || (len < 0 && (i == n || s > outend))) { |
| 467 | *s++ = '.'; *s++ = '.'; *s++ = '.'; |
| 468 | } |
| 469 | *s = '\0'; |
| 470 | tprintf("%s", outstr); |
| 471 | } |
| 472 | |
John Hughes | 1d08dcf | 2001-07-10 13:48:44 +0000 | [diff] [blame] | 473 | #if HAVE_SYS_UIO_H |
| 474 | void |
| 475 | dumpiov(tcp, len, addr) |
| 476 | struct tcb * tcp; |
| 477 | int len; |
| 478 | long addr; |
| 479 | { |
| 480 | struct iovec *iov; |
| 481 | int i; |
| 482 | |
Roland McGrath | 1e85cf9 | 2002-12-16 20:40:54 +0000 | [diff] [blame] | 483 | |
John Hughes | 1d08dcf | 2001-07-10 13:48:44 +0000 | [diff] [blame] | 484 | if ((iov = (struct iovec *) malloc(len * sizeof *iov)) == NULL) { |
| 485 | fprintf(stderr, "dump: No memory"); |
| 486 | return; |
| 487 | } |
| 488 | if (umoven(tcp, addr, |
| 489 | len * sizeof *iov, (char *) iov) >= 0) { |
Roland McGrath | 1e85cf9 | 2002-12-16 20:40:54 +0000 | [diff] [blame] | 490 | |
John Hughes | 1d08dcf | 2001-07-10 13:48:44 +0000 | [diff] [blame] | 491 | for (i = 0; i < len; i++) { |
| 492 | /* include the buffer number to make it easy to |
| 493 | * match up the trace with the source */ |
| 494 | tprintf(" * %lu bytes in buffer %d\n", |
| 495 | (unsigned long)iov[i].iov_len, i); |
| 496 | dumpstr(tcp, (long) iov[i].iov_base, |
| 497 | iov[i].iov_len); |
| 498 | } |
| 499 | } |
| 500 | free((char *) iov); |
Roland McGrath | 1e85cf9 | 2002-12-16 20:40:54 +0000 | [diff] [blame] | 501 | |
John Hughes | 1d08dcf | 2001-07-10 13:48:44 +0000 | [diff] [blame] | 502 | } |
| 503 | #endif |
| 504 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 505 | void |
| 506 | dumpstr(tcp, addr, len) |
| 507 | struct tcb *tcp; |
| 508 | long addr; |
| 509 | int len; |
| 510 | { |
| 511 | static int strsize = -1; |
| 512 | static unsigned char *str; |
| 513 | static char outstr[80]; |
| 514 | char *s; |
| 515 | int i, j; |
| 516 | |
| 517 | if (strsize < len) { |
| 518 | if (str) |
| 519 | free(str); |
| 520 | if ((str = malloc(len)) == NULL) { |
| 521 | fprintf(stderr, "dump: no memory\n"); |
| 522 | return; |
| 523 | } |
| 524 | strsize = len; |
| 525 | } |
| 526 | |
| 527 | if (umoven(tcp, addr, len, (char *) str) < 0) |
| 528 | return; |
| 529 | |
| 530 | for (i = 0; i < len; i += 16) { |
| 531 | s = outstr; |
| 532 | sprintf(s, " | %05x ", i); |
| 533 | s += 9; |
| 534 | for (j = 0; j < 16; j++) { |
| 535 | if (j == 8) |
| 536 | *s++ = ' '; |
| 537 | if (i + j < len) { |
| 538 | sprintf(s, " %02x", str[i + j]); |
| 539 | s += 3; |
| 540 | } |
| 541 | else { |
| 542 | *s++ = ' '; *s++ = ' '; *s++ = ' '; |
| 543 | } |
| 544 | } |
| 545 | *s++ = ' '; *s++ = ' '; |
| 546 | for (j = 0; j < 16; j++) { |
| 547 | if (j == 8) |
| 548 | *s++ = ' '; |
| 549 | if (i + j < len) { |
| 550 | if (isprint(str[i + j])) |
| 551 | *s++ = str[i + j]; |
| 552 | else |
| 553 | *s++ = '.'; |
| 554 | } |
| 555 | else |
| 556 | *s++ = ' '; |
| 557 | } |
| 558 | tprintf("%s |\n", outstr); |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | #define PAGMASK (~(PAGSIZ - 1)) |
| 563 | /* |
| 564 | * move `len' bytes of data from process `pid' |
| 565 | * at address `addr' to our space at `laddr' |
| 566 | */ |
| 567 | int |
| 568 | umoven(tcp, addr, len, laddr) |
| 569 | struct tcb *tcp; |
| 570 | long addr; |
| 571 | int len; |
| 572 | char *laddr; |
| 573 | { |
| 574 | |
| 575 | #ifdef LINUX |
| 576 | int pid = tcp->pid; |
| 577 | int n, m; |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 578 | int started = 0; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 579 | union { |
| 580 | long val; |
| 581 | char x[sizeof(long)]; |
| 582 | } u; |
| 583 | |
| 584 | if (addr & (sizeof(long) - 1)) { |
| 585 | /* addr not a multiple of sizeof(long) */ |
| 586 | n = addr - (addr & -sizeof(long)); /* residue */ |
| 587 | addr &= -sizeof(long); /* residue */ |
| 588 | errno = 0; |
| 589 | u.val = ptrace(PTRACE_PEEKDATA, pid, (char *) addr, 0); |
| 590 | if (errno) { |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 591 | if (started && (errno==EPERM || errno==EIO)) { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 592 | /* Ran into 'end of memory' - stupid "printpath" */ |
| 593 | return 0; |
| 594 | } |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 595 | /* But if not started, we had a bogus address. */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 596 | perror("ptrace: umoven"); |
| 597 | return -1; |
| 598 | } |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 599 | started = 1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 600 | memcpy(laddr, &u.x[n], m = MIN(sizeof(long) - n, len)); |
| 601 | addr += sizeof(long), laddr += m, len -= m; |
| 602 | } |
| 603 | while (len) { |
| 604 | errno = 0; |
| 605 | u.val = ptrace(PTRACE_PEEKDATA, pid, (char *) addr, 0); |
| 606 | if (errno) { |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 607 | if (started && (errno==EPERM || errno==EIO)) { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 608 | /* Ran into 'end of memory' - stupid "printpath" */ |
| 609 | return 0; |
| 610 | } |
| 611 | perror("ptrace: umoven"); |
| 612 | return -1; |
| 613 | } |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 614 | started = 1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 615 | memcpy(laddr, u.x, m = MIN(sizeof(long), len)); |
| 616 | addr += sizeof(long), laddr += m, len -= m; |
| 617 | } |
| 618 | #endif /* LINUX */ |
| 619 | |
| 620 | #ifdef SUNOS4 |
| 621 | int pid = tcp->pid; |
| 622 | #if 0 |
| 623 | int n, m; |
| 624 | union { |
| 625 | long val; |
| 626 | char x[sizeof(long)]; |
| 627 | } u; |
| 628 | |
| 629 | if (addr & (sizeof(long) - 1)) { |
| 630 | /* addr not a multiple of sizeof(long) */ |
| 631 | n = addr - (addr & -sizeof(long)); /* residue */ |
| 632 | addr &= -sizeof(long); /* residue */ |
| 633 | errno = 0; |
| 634 | u.val = ptrace(PTRACE_PEEKDATA, pid, (char *) addr, 0); |
| 635 | if (errno) { |
| 636 | perror("umoven"); |
| 637 | return -1; |
| 638 | } |
| 639 | memcpy(laddr, &u.x[n], m = MIN(sizeof(long) - n, len)); |
| 640 | addr += sizeof(long), laddr += m, len -= m; |
| 641 | } |
| 642 | while (len) { |
| 643 | errno = 0; |
| 644 | u.val = ptrace(PTRACE_PEEKDATA, pid, (char *) addr, 0); |
| 645 | if (errno) { |
| 646 | perror("umoven"); |
| 647 | return -1; |
| 648 | } |
| 649 | memcpy(laddr, u.x, m = MIN(sizeof(long), len)); |
| 650 | addr += sizeof(long), laddr += m, len -= m; |
| 651 | } |
| 652 | #else /* !oldway */ |
| 653 | int n; |
| 654 | |
| 655 | while (len) { |
| 656 | n = MIN(len, PAGSIZ); |
| 657 | n = MIN(n, ((addr + PAGSIZ) & PAGMASK) - addr); |
| 658 | if (ptrace(PTRACE_READDATA, pid, |
| 659 | (char *) addr, len, laddr) < 0) { |
| 660 | perror("umoven: ptrace(PTRACE_READDATA, ...)"); |
| 661 | abort(); |
| 662 | return -1; |
| 663 | } |
| 664 | len -= n; |
| 665 | addr += n; |
| 666 | laddr += n; |
| 667 | } |
| 668 | #endif /* !oldway */ |
| 669 | #endif /* SUNOS4 */ |
| 670 | |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 671 | #ifdef USE_PROCFS |
Wichert Akkerman | ea78f0f | 1999-11-29 15:34:02 +0000 | [diff] [blame] | 672 | #ifdef HAVE_MP_PROCFS |
John Hughes | aa09c6b | 2001-05-15 14:53:43 +0000 | [diff] [blame] | 673 | int fd = tcp->pfd_as; |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 674 | #else |
John Hughes | aa09c6b | 2001-05-15 14:53:43 +0000 | [diff] [blame] | 675 | int fd = tcp->pfd; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 676 | #endif |
John Hughes | aa09c6b | 2001-05-15 14:53:43 +0000 | [diff] [blame] | 677 | lseek(fd, addr, SEEK_SET); |
| 678 | if (read(fd, laddr, len) == -1) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 679 | return -1; |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 680 | #endif /* USE_PROCFS */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 681 | |
| 682 | return 0; |
| 683 | } |
| 684 | |
| 685 | /* |
| 686 | * like `umove' but make the additional effort of looking |
| 687 | * for a terminating zero byte. |
| 688 | */ |
| 689 | int |
| 690 | umovestr(tcp, addr, len, laddr) |
| 691 | struct tcb *tcp; |
| 692 | long addr; |
| 693 | int len; |
| 694 | char *laddr; |
| 695 | { |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 696 | #ifdef USE_PROCFS |
John Hughes | aa09c6b | 2001-05-15 14:53:43 +0000 | [diff] [blame] | 697 | #ifdef HAVE_MP_PROCFS |
| 698 | int fd = tcp->pfd_as; |
| 699 | #else |
| 700 | int fd = tcp->pfd; |
| 701 | #endif |
| 702 | /* Some systems (e.g. FreeBSD) can be upset if we read off the |
| 703 | end of valid memory, avoid this by trying to read up |
| 704 | to page boundaries. But we don't know what a page is (and |
| 705 | getpagesize(2) (if it exists) doesn't necessarily return |
| 706 | hardware page size). Assume all pages >= 1024 (a-historical |
| 707 | I know) */ |
| 708 | |
| 709 | int page = 1024; /* How to find this? */ |
| 710 | int move = page - (addr & (page - 1)); |
| 711 | int left = len; |
| 712 | |
| 713 | lseek(fd, addr, SEEK_SET); |
| 714 | |
| 715 | while (left) { |
| 716 | if (move > left) move = left; |
John Hughes | 9cecf7f | 2001-10-16 10:20:22 +0000 | [diff] [blame] | 717 | if ((move = read(fd, laddr, move)) <= 0) |
John Hughes | aa09c6b | 2001-05-15 14:53:43 +0000 | [diff] [blame] | 718 | return left != len ? 0 : -1; |
| 719 | if (memchr (laddr, 0, move)) break; |
| 720 | left -= move; |
| 721 | laddr += move; |
| 722 | addr += move; |
| 723 | move = page; |
| 724 | } |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 725 | #else /* !USE_PROCFS */ |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 726 | int started = 0; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 727 | int pid = tcp->pid; |
| 728 | int i, n, m; |
| 729 | union { |
| 730 | long val; |
| 731 | char x[sizeof(long)]; |
| 732 | } u; |
| 733 | |
| 734 | if (addr & (sizeof(long) - 1)) { |
| 735 | /* addr not a multiple of sizeof(long) */ |
| 736 | n = addr - (addr & -sizeof(long)); /* residue */ |
| 737 | addr &= -sizeof(long); /* residue */ |
| 738 | errno = 0; |
| 739 | u.val = ptrace(PTRACE_PEEKDATA, pid, (char *)addr, 0); |
| 740 | if (errno) { |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 741 | if (started && (errno==EPERM || errno==EIO)) { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 742 | /* Ran into 'end of memory' - stupid "printpath" */ |
| 743 | return 0; |
| 744 | } |
| 745 | perror("umovestr"); |
| 746 | return -1; |
| 747 | } |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 748 | started = 1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 749 | memcpy(laddr, &u.x[n], m = MIN(sizeof(long)-n,len)); |
| 750 | while (n & (sizeof(long) - 1)) |
| 751 | if (u.x[n++] == '\0') |
| 752 | return 0; |
| 753 | addr += sizeof(long), laddr += m, len -= m; |
| 754 | } |
| 755 | while (len) { |
| 756 | errno = 0; |
| 757 | u.val = ptrace(PTRACE_PEEKDATA, pid, (char *)addr, 0); |
| 758 | if (errno) { |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 759 | if (started && (errno==EPERM || errno==EIO)) { |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 760 | /* Ran into 'end of memory' - stupid "printpath" */ |
| 761 | return 0; |
| 762 | } |
| 763 | perror("umovestr"); |
| 764 | return -1; |
| 765 | } |
Wichert Akkerman | 5daa028 | 1999-03-15 19:49:42 +0000 | [diff] [blame] | 766 | started = 1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 767 | memcpy(laddr, u.x, m = MIN(sizeof(long), len)); |
| 768 | for (i = 0; i < sizeof(long); i++) |
| 769 | if (u.x[i] == '\0') |
| 770 | return 0; |
| 771 | |
| 772 | addr += sizeof(long), laddr += m, len -= m; |
| 773 | } |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 774 | #endif /* !USE_PROCFS */ |
John Hughes | aa09c6b | 2001-05-15 14:53:43 +0000 | [diff] [blame] | 775 | return 0; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 776 | } |
| 777 | |
| 778 | #ifdef LINUX |
| 779 | #ifndef SPARC |
| 780 | #define PTRACE_WRITETEXT 101 |
| 781 | #define PTRACE_WRITEDATA 102 |
| 782 | #endif /* !SPARC */ |
| 783 | #endif /* LINUX */ |
| 784 | |
| 785 | #ifdef SUNOS4 |
| 786 | |
| 787 | static int |
| 788 | uload(cmd, pid, addr, len, laddr) |
| 789 | int cmd; |
| 790 | int pid; |
| 791 | long addr; |
| 792 | int len; |
| 793 | char *laddr; |
| 794 | { |
| 795 | #if 0 |
| 796 | int n; |
| 797 | |
| 798 | while (len) { |
| 799 | n = MIN(len, PAGSIZ); |
| 800 | n = MIN(n, ((addr + PAGSIZ) & PAGMASK) - addr); |
| 801 | if (ptrace(cmd, pid, (char *)addr, n, laddr) < 0) { |
| 802 | perror("uload: ptrace(PTRACE_WRITE, ...)"); |
| 803 | return -1; |
| 804 | } |
| 805 | len -= n; |
| 806 | addr += n; |
| 807 | laddr += n; |
| 808 | } |
| 809 | #else |
| 810 | int peek, poke; |
| 811 | int n, m; |
| 812 | union { |
| 813 | long val; |
| 814 | char x[sizeof(long)]; |
| 815 | } u; |
| 816 | |
| 817 | if (cmd == PTRACE_WRITETEXT) { |
| 818 | peek = PTRACE_PEEKTEXT; |
| 819 | poke = PTRACE_POKETEXT; |
| 820 | } |
| 821 | else { |
| 822 | peek = PTRACE_PEEKDATA; |
| 823 | poke = PTRACE_POKEDATA; |
| 824 | } |
| 825 | if (addr & (sizeof(long) - 1)) { |
| 826 | /* addr not a multiple of sizeof(long) */ |
| 827 | n = addr - (addr & -sizeof(long)); /* residue */ |
| 828 | addr &= -sizeof(long); |
| 829 | errno = 0; |
| 830 | u.val = ptrace(peek, pid, (char *) addr, 0); |
| 831 | if (errno) { |
| 832 | perror("uload: POKE"); |
| 833 | return -1; |
| 834 | } |
| 835 | memcpy(&u.x[n], laddr, m = MIN(sizeof(long) - n, len)); |
| 836 | if (ptrace(poke, pid, (char *)addr, u.val) < 0) { |
| 837 | perror("uload: POKE"); |
| 838 | return -1; |
| 839 | } |
| 840 | addr += sizeof(long), laddr += m, len -= m; |
| 841 | } |
| 842 | while (len) { |
| 843 | if (len < sizeof(long)) |
| 844 | u.val = ptrace(peek, pid, (char *) addr, 0); |
| 845 | memcpy(u.x, laddr, m = MIN(sizeof(long), len)); |
| 846 | if (ptrace(poke, pid, (char *) addr, u.val) < 0) { |
| 847 | perror("uload: POKE"); |
| 848 | return -1; |
| 849 | } |
| 850 | addr += sizeof(long), laddr += m, len -= m; |
| 851 | } |
| 852 | #endif |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | int |
| 857 | tload(pid, addr, len, laddr) |
| 858 | int pid; |
| 859 | int addr, len; |
| 860 | char *laddr; |
| 861 | { |
| 862 | return uload(PTRACE_WRITETEXT, pid, addr, len, laddr); |
| 863 | } |
| 864 | |
| 865 | int |
| 866 | dload(pid, addr, len, laddr) |
| 867 | int pid; |
| 868 | int addr; |
| 869 | int len; |
| 870 | char *laddr; |
| 871 | { |
| 872 | return uload(PTRACE_WRITEDATA, pid, addr, len, laddr); |
| 873 | } |
| 874 | |
| 875 | #endif /* SUNOS4 */ |
| 876 | |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 877 | #ifndef USE_PROCFS |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 878 | |
| 879 | int |
| 880 | upeek(pid, off, res) |
| 881 | int pid; |
| 882 | long off; |
| 883 | long *res; |
| 884 | { |
| 885 | long val; |
| 886 | |
| 887 | #ifdef SUNOS4_KERNEL_ARCH_KLUDGE |
| 888 | { |
| 889 | static int is_sun4m = -1; |
| 890 | struct utsname name; |
| 891 | |
| 892 | /* Round up the usual suspects. */ |
| 893 | if (is_sun4m == -1) { |
| 894 | if (uname(&name) < 0) { |
| 895 | perror("upeek: uname?"); |
| 896 | exit(1); |
| 897 | } |
| 898 | is_sun4m = strcmp(name.machine, "sun4m") == 0; |
| 899 | if (is_sun4m) { |
| 900 | extern struct xlat struct_user_offsets[]; |
| 901 | struct xlat *x; |
| 902 | |
| 903 | for (x = struct_user_offsets; x->str; x++) |
| 904 | x->val += 1024; |
| 905 | } |
| 906 | } |
| 907 | if (is_sun4m) |
| 908 | off += 1024; |
| 909 | } |
| 910 | #endif /* SUNOS4_KERNEL_ARCH_KLUDGE */ |
| 911 | errno = 0; |
| 912 | val = ptrace(PTRACE_PEEKUSER, pid, (char *) off, 0); |
| 913 | if (val == -1 && errno) { |
Roland McGrath | 1e85cf9 | 2002-12-16 20:40:54 +0000 | [diff] [blame] | 914 | char buf[60]; |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 915 | sprintf(buf,"upeek: ptrace(PTRACE_PEEKUSER,%d,%lu,0)",pid,off); |
Roland McGrath | 1e85cf9 | 2002-12-16 20:40:54 +0000 | [diff] [blame] | 916 | perror(buf); |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 917 | return -1; |
| 918 | } |
| 919 | *res = val; |
| 920 | return 0; |
| 921 | } |
| 922 | |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 923 | #endif /* !USE_PROCFS */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 924 | |
| 925 | long |
| 926 | getpc(tcp) |
| 927 | struct tcb *tcp; |
| 928 | { |
| 929 | |
| 930 | #ifdef LINUX |
| 931 | long pc; |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 932 | #if defined(I386) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 933 | if (upeek(tcp->pid, 4*EIP, &pc) < 0) |
| 934 | return -1; |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 935 | #elif defined(X86_64) |
| 936 | if (upeek(tcp->pid, 8*RIP, &pc) < 0) |
| 937 | return -1; |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 938 | #elif defined(IA64) |
| 939 | if (upeek(tcp->pid, PT_B0, &pc) < 0) |
| 940 | return -1; |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 941 | #elif defined(ARM) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 942 | if (upeek(tcp->pid, 4*15, &pc) < 0) |
| 943 | return -1; |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 944 | #elif defined(POWERPC) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 945 | if (upeek(tcp->pid, 4*PT_NIP, &pc) < 0) |
| 946 | return -1; |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 947 | #elif defined(M68k) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 948 | if (upeek(tcp->pid, 4*PT_PC, &pc) < 0) |
| 949 | return -1; |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 950 | #elif defined(ALPHA) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 951 | if (upeek(tcp->pid, REG_PC, &pc) < 0) |
| 952 | return -1; |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 953 | #elif defined(MIPS) |
| 954 | if (upeek(tcp->pid, REG_EPC, &pc) < 0) |
| 955 | return -1; |
| 956 | #elif defined(SPARC) |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 957 | struct regs regs; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 958 | if (ptrace(PTRACE_GETREGS,tcp->pid,(char *)®s,0) < 0) |
| 959 | return -1; |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 960 | pc = regs.r_pc; |
Michal Ludvig | 10a88d0 | 2002-10-07 14:31:00 +0000 | [diff] [blame] | 961 | #elif defined(S390) || defined(S390X) |
Wichert Akkerman | 4dc8a2a | 1999-12-23 14:20:14 +0000 | [diff] [blame] | 962 | if(upeek(tcp->pid,PT_PSWADDR,&pc) < 0) |
Michal Ludvig | 10a88d0 | 2002-10-07 14:31:00 +0000 | [diff] [blame] | 963 | return -1; |
Wichert Akkerman | c1652e2 | 2001-03-27 12:17:16 +0000 | [diff] [blame] | 964 | #elif defined(HPPA) |
| 965 | if(upeek(tcp->pid,PT_IAOQ0,&pc) < 0) |
| 966 | return -1; |
Wichert Akkerman | ccef637 | 2002-05-01 16:39:22 +0000 | [diff] [blame] | 967 | #elif defined(SH) |
| 968 | if (upeek(tcp->pid, 4*REG_PC ,&pc) < 0) |
| 969 | return -1; |
Wichert Akkerman | 7a0b649 | 1999-12-23 15:08:17 +0000 | [diff] [blame] | 970 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 971 | return pc; |
| 972 | #endif /* LINUX */ |
| 973 | |
| 974 | #ifdef SUNOS4 |
| 975 | /* |
| 976 | * Return current program counter for `pid' |
| 977 | * Assumes PC is never 0xffffffff |
| 978 | */ |
| 979 | struct regs regs; |
| 980 | |
| 981 | if (ptrace(PTRACE_GETREGS, tcp->pid, (char *) ®s, 0) < 0) { |
| 982 | perror("getpc: ptrace(PTRACE_GETREGS, ...)"); |
| 983 | return -1; |
| 984 | } |
| 985 | return regs.r_pc; |
| 986 | #endif /* SUNOS4 */ |
| 987 | |
| 988 | #ifdef SVR4 |
| 989 | /* XXX */ |
| 990 | return 0; |
| 991 | #endif /* SVR4 */ |
| 992 | |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 993 | #ifdef FREEBSD |
| 994 | struct reg regs; |
| 995 | pread(tcp->pfd_reg, ®s, sizeof(regs), 0); |
| 996 | return regs.r_eip; |
| 997 | #endif /* FREEBSD */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 998 | } |
| 999 | |
| 1000 | void |
| 1001 | printcall(tcp) |
| 1002 | struct tcb *tcp; |
| 1003 | { |
| 1004 | |
| 1005 | #ifdef LINUX |
| 1006 | #ifdef I386 |
| 1007 | long eip; |
| 1008 | |
| 1009 | if (upeek(tcp->pid, 4*EIP, &eip) < 0) { |
| 1010 | tprintf("[????????] "); |
| 1011 | return; |
| 1012 | } |
| 1013 | tprintf("[%08lx] ", eip); |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 1014 | #elif defined(X86_64) |
| 1015 | long rip; |
| 1016 | |
| 1017 | if (upeek(tcp->pid, 8*RIP, &rip) < 0) { |
| 1018 | tprintf("[????????] "); |
| 1019 | return; |
| 1020 | } |
| 1021 | tprintf("[%16lx] ", rip); |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1022 | #elif defined(IA62) |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 1023 | long ip; |
| 1024 | |
| 1025 | if (upeek(tcp->pid, PT_B0, &ip) < 0) { |
| 1026 | tprintf("[????????] "); |
| 1027 | return; |
| 1028 | } |
| 1029 | tprintf("[%08lx] ", ip); |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1030 | #elif defined(POWERPC) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1031 | long pc; |
| 1032 | |
| 1033 | if (upeek(tcp->pid, 4*PT_NIP, &pc) < 0) { |
| 1034 | tprintf ("[????????] "); |
| 1035 | return; |
| 1036 | } |
| 1037 | tprintf("[%08lx] ", pc); |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1038 | #elif defined(M68k) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1039 | long pc; |
| 1040 | |
| 1041 | if (upeek(tcp->pid, 4*PT_PC, &pc) < 0) { |
| 1042 | tprintf ("[????????] "); |
| 1043 | return; |
| 1044 | } |
| 1045 | tprintf("[%08lx] ", pc); |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1046 | #elif defined(ALPHA) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1047 | long pc; |
| 1048 | |
| 1049 | if (upeek(tcp->pid, REG_PC, &pc) < 0) { |
| 1050 | tprintf ("[????????] "); |
| 1051 | return; |
| 1052 | } |
| 1053 | tprintf("[%08lx] ", pc); |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1054 | #elif defined(SPARC) |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 1055 | struct regs regs; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1056 | if (ptrace(PTRACE_GETREGS,tcp->pid,(char *)®s,0) < 0) { |
| 1057 | tprintf("[????????] "); |
| 1058 | return; |
| 1059 | } |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 1060 | tprintf("[%08lx] ", regs.r_pc); |
Wichert Akkerman | c1652e2 | 2001-03-27 12:17:16 +0000 | [diff] [blame] | 1061 | #elif defined(HPPA) |
| 1062 | long pc; |
| 1063 | |
| 1064 | if(upeek(tcp->pid,PT_IAOQ0,&pc) < 0) { |
| 1065 | tprintf ("[????????] "); |
| 1066 | return; |
| 1067 | } |
| 1068 | tprintf("[%08lx] ", pc); |
Wichert Akkerman | 75c422b | 2001-04-10 10:22:50 +0000 | [diff] [blame] | 1069 | #elif defined(MIPS) |
| 1070 | long pc; |
| 1071 | |
| 1072 | if (upeek(tcp->pid, REG_EPC, &pc) < 0) { |
| 1073 | tprintf ("[????????] "); |
| 1074 | return; |
| 1075 | } |
| 1076 | tprintf("[%08lx] ", pc); |
Wichert Akkerman | ccef637 | 2002-05-01 16:39:22 +0000 | [diff] [blame] | 1077 | #elif defined(SH) |
| 1078 | long pc; |
| 1079 | |
| 1080 | if (upeek(tcp->pid, 4*REG_PC, &pc) < 0) { |
| 1081 | tprintf ("[????????] "); |
| 1082 | return; |
| 1083 | } |
| 1084 | tprintf("[%08lx] ", pc); |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1085 | #endif /* !architecture */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1086 | #endif /* LINUX */ |
| 1087 | |
| 1088 | #ifdef SUNOS4 |
| 1089 | struct regs regs; |
| 1090 | |
| 1091 | if (ptrace(PTRACE_GETREGS, tcp->pid, (char *) ®s, 0) < 0) { |
| 1092 | perror("printcall: ptrace(PTRACE_GETREGS, ...)"); |
| 1093 | tprintf("[????????] "); |
| 1094 | return; |
| 1095 | } |
| 1096 | tprintf("[%08x] ", regs.r_o7); |
| 1097 | #endif /* SUNOS4 */ |
| 1098 | |
| 1099 | #ifdef SVR4 |
| 1100 | /* XXX */ |
| 1101 | tprintf("[????????] "); |
| 1102 | #endif |
| 1103 | |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 1104 | #ifdef FREEBSD |
| 1105 | struct reg regs; |
| 1106 | pread(tcp->pfd_reg, ®s, sizeof(regs), 0); |
| 1107 | tprintf("[%08x] ", regs.r_eip); |
| 1108 | #endif /* FREEBSD */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1109 | } |
| 1110 | |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 1111 | #ifndef USE_PROCFS |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1112 | |
Roland McGrath | d81f1d9 | 2003-01-09 06:53:34 +0000 | [diff] [blame] | 1113 | #if defined LINUX |
| 1114 | |
| 1115 | #include <sys/syscall.h> |
| 1116 | #ifndef CLONE_PTRACE |
| 1117 | # define CLONE_PTRACE 0x00002000 |
| 1118 | #endif |
| 1119 | |
| 1120 | #ifdef IA64 |
| 1121 | |
| 1122 | typedef unsigned long *arg_setup_state; |
| 1123 | |
| 1124 | static int |
| 1125 | arg_setup(struct tcb *tcp, arg_setup_state *state) |
| 1126 | { |
| 1127 | unsigned long *bsp, cfm, sof, sol; |
| 1128 | |
| 1129 | if (upeek(tcp->pid, PT_AR_BSP, (long *) &bsp) < 0) |
| 1130 | return -1; |
| 1131 | if (upeek(tcp->pid, PT_CFM, (long *) &cfm) < 0) |
| 1132 | return -1; |
| 1133 | |
| 1134 | sof = (cfm >> 0) & 0x7f; |
| 1135 | sol = (cfm >> 7) & 0x7f; |
| 1136 | bsp = ia64_rse_skip_regs(bsp, -sof + sol); |
| 1137 | |
| 1138 | *state = bsp; |
| 1139 | return 0; |
| 1140 | } |
| 1141 | |
| 1142 | # define arg_finish_change(tcp, state) 0 |
| 1143 | |
| 1144 | #ifdef SYS_fork |
| 1145 | static int |
| 1146 | get_arg0 (struct tcb *tcp, arg_setup_state *state, long *valp) |
| 1147 | { |
| 1148 | return umoven (tcp, (unsigned long) ia64_rse_skip_regs(*state, 0), |
| 1149 | sizeof(long), (void *) valp); |
| 1150 | } |
| 1151 | |
| 1152 | static int |
| 1153 | get_arg1 (struct tcb *tcp, arg_setup_state *state, long *valp) |
| 1154 | { |
| 1155 | return umoven (tcp, (unsigned long) ia64_rse_skip_regs(*state, 1), |
| 1156 | sizeof(long), (void *) valp); |
| 1157 | } |
| 1158 | #endif |
| 1159 | |
| 1160 | static int |
| 1161 | set_arg0 (struct tcb *tcp, arg_setup_state *state, long val) |
| 1162 | { |
| 1163 | unsigned long *ap; |
| 1164 | ap = ia64_rse_skip_regs(*state, 0); |
| 1165 | errno = 0; |
| 1166 | ptrace(PTRACE_POKEDATA, tcp->pid, (void *) ap, val); |
| 1167 | return errno ? -1 : 0; |
| 1168 | } |
| 1169 | |
| 1170 | static int |
| 1171 | set_arg1 (struct tcb *tcp, arg_setup_state *state, long val) |
| 1172 | { |
| 1173 | unsigned long *ap; |
| 1174 | ap = ia64_rse_skip_regs(*state, 1); |
| 1175 | errno = 0; |
| 1176 | ptrace(PTRACE_POKEDATA, tcp->pid, (void *) ap, val); |
| 1177 | return errno ? -1 : 0; |
| 1178 | } |
| 1179 | |
| 1180 | #elif defined (SPARC) |
| 1181 | |
| 1182 | typedef struct regs arg_setup_state; |
| 1183 | |
| 1184 | # define arg_setup(tcp, state) \ |
| 1185 | (ptrace (PTRACE_GETREGS, tcp->pid, (char *) (state), 0)) |
| 1186 | # define arg_finish_change(tcp, state) \ |
| 1187 | (ptrace (PTRACE_SETREGS, tcp->pid, (char *) (state), 0)) |
| 1188 | |
| 1189 | # define get_arg0(tcp, state, valp) (*(valp) = (state)->r_o0, 0) |
| 1190 | # define get_arg1(tcp, state, valp) (*(valp) = (state)->r_o1, 0) |
| 1191 | # define set_arg0(tcp, state, val) ((state)->r_o0 = (val), 0) |
| 1192 | # define set_arg1(tcp, state, val) ((state)->r_o1 = (val), 0) |
| 1193 | |
| 1194 | #else |
| 1195 | |
| 1196 | # if defined S390 || defined S390X |
| 1197 | # define arg0_offset PT_ORIGGPR2 |
| 1198 | # define arg1_offset PT_GPR2 |
| 1199 | # elif defined (ALPHA) || defined (MIPS) |
| 1200 | # define arg0_offset REG_A0 |
| 1201 | # define arg1_offset (REG_A0+1) |
| 1202 | # elif defined (POWERPC) |
Roland McGrath | 43b286f | 2003-01-10 11:14:41 +0000 | [diff] [blame^] | 1203 | # define arg0_offset (4*PT_R3) |
| 1204 | # define arg1_offset (4*PT_R4) |
Roland McGrath | d81f1d9 | 2003-01-09 06:53:34 +0000 | [diff] [blame] | 1205 | # elif defined (HPPA) |
| 1206 | # define arg0_offset PT_GR26 |
| 1207 | # define arg1_offset (PT_GR26-4) |
| 1208 | # else |
| 1209 | # define arg0_offset 0 |
| 1210 | # define arg1_offset 4 |
| 1211 | # endif |
| 1212 | |
| 1213 | typedef int arg_setup_state; |
| 1214 | |
| 1215 | # define arg_setup(tcp, state) (0) |
| 1216 | # define arg_finish_change(tcp, state) 0 |
| 1217 | # define get_arg0(tcp, cookie, valp) \ |
| 1218 | (upeek ((tcp)->pid, arg0_offset, (valp))) |
| 1219 | # define get_arg1(tcp, cookie, valp) \ |
| 1220 | (upeek ((tcp)->pid, arg1_offset, (valp))) |
| 1221 | |
| 1222 | static int |
| 1223 | set_arg0 (struct tcb *tcp, void *cookie, long val) |
| 1224 | { |
| 1225 | return ptrace (PTRACE_POKEUSER, tcp->pid, (char*)arg0_offset, val); |
| 1226 | } |
| 1227 | |
| 1228 | static int |
| 1229 | set_arg1 (struct tcb *tcp, void *cookie, long val) |
| 1230 | { |
| 1231 | return ptrace (PTRACE_POKEUSER, tcp->pid, (char*)arg1_offset, val); |
| 1232 | } |
| 1233 | |
| 1234 | #endif |
| 1235 | |
| 1236 | |
| 1237 | int |
| 1238 | setbpt(tcp) |
| 1239 | struct tcb *tcp; |
| 1240 | { |
| 1241 | extern int change_syscall(struct tcb *, int); |
| 1242 | arg_setup_state state; |
| 1243 | |
| 1244 | if (tcp->flags & TCB_BPTSET) { |
| 1245 | fprintf(stderr, "PANIC: TCB already set in pid %u\n", tcp->pid); |
| 1246 | return -1; |
| 1247 | } |
| 1248 | |
| 1249 | switch (tcp->scno) { |
| 1250 | #ifdef SYS_fork |
| 1251 | case SYS_fork: |
| 1252 | if (arg_setup (tcp, &state) < 0 |
| 1253 | || get_arg0 (tcp, &state, &tcp->inst[0]) < 0 |
| 1254 | || get_arg1 (tcp, &state, &tcp->inst[1]) < 0 |
| 1255 | || change_syscall(tcp, SYS_clone) < 0 |
| 1256 | || set_arg0 (tcp, &state, CLONE_PTRACE|SIGCHLD) < 0 |
| 1257 | || set_arg1 (tcp, &state, 0) < 0 |
| 1258 | || arg_finish_change (tcp, &state) < 0) |
| 1259 | return -1; |
| 1260 | tcp->u_arg[0] = CLONE_PTRACE|SIGCHLD; |
| 1261 | tcp->u_arg[1] = 0; |
| 1262 | tcp->flags |= TCB_BPTSET; |
| 1263 | return 0; |
| 1264 | #endif |
| 1265 | |
| 1266 | case SYS_clone: |
| 1267 | #ifdef SYS_clone2 |
| 1268 | case SYS_clone2: |
| 1269 | #endif |
| 1270 | if ((tcp->u_arg[0] & CLONE_PTRACE) == 0 |
| 1271 | && (arg_setup (tcp, &state) < 0 |
| 1272 | || set_arg0 (tcp, &state, tcp->u_arg[0] | CLONE_PTRACE) < 0 |
| 1273 | || arg_finish_change (tcp, &state) < 0)) |
| 1274 | return -1; |
| 1275 | tcp->flags |= TCB_BPTSET; |
| 1276 | tcp->inst[0] = tcp->u_arg[0]; |
| 1277 | tcp->inst[1] = tcp->u_arg[1]; |
| 1278 | return 0; |
| 1279 | |
| 1280 | default: |
| 1281 | fprintf(stderr, "PANIC: setbpt for syscall %ld on %u???\n", |
| 1282 | tcp->scno, tcp->pid); |
| 1283 | break; |
| 1284 | } |
| 1285 | |
| 1286 | return -1; |
| 1287 | } |
| 1288 | |
| 1289 | int |
| 1290 | clearbpt(tcp) |
| 1291 | struct tcb *tcp; |
| 1292 | { |
| 1293 | arg_setup_state state; |
| 1294 | if (arg_setup (tcp, &state) < 0 |
| 1295 | || set_arg0 (tcp, &state, tcp->inst[0]) < 0 |
| 1296 | || set_arg1 (tcp, &state, tcp->inst[1]) < 0 |
| 1297 | || arg_finish_change (tcp, &state)) |
| 1298 | return -1; |
| 1299 | tcp->flags &= ~TCB_BPTSET; |
| 1300 | return 0; |
| 1301 | } |
| 1302 | |
| 1303 | #else |
| 1304 | |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1305 | int |
| 1306 | setbpt(tcp) |
| 1307 | struct tcb *tcp; |
| 1308 | { |
| 1309 | |
| 1310 | #ifdef LINUX |
| 1311 | #ifdef SPARC |
| 1312 | /* We simply use the SunOS breakpoint code. */ |
| 1313 | |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 1314 | struct regs regs; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1315 | #define LOOPA 0x30800000 /* ba,a 0 */ |
| 1316 | |
| 1317 | if (tcp->flags & TCB_BPTSET) { |
| 1318 | fprintf(stderr, "PANIC: TCB already set in pid %u\n", tcp->pid); |
| 1319 | return -1; |
| 1320 | } |
| 1321 | if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) { |
| 1322 | perror("setbpt: ptrace(PTRACE_GETREGS, ...)"); |
| 1323 | return -1; |
| 1324 | } |
Wichert Akkerman | 9ce1a63 | 1999-08-29 23:15:07 +0000 | [diff] [blame] | 1325 | tcp->baddr = regs.r_o7 + 8; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1326 | errno = 0; |
| 1327 | tcp->inst[0] = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *)tcp->baddr, 0); |
| 1328 | if(errno) { |
| 1329 | perror("setbpt: ptrace(PTRACE_PEEKTEXT, ...)"); |
| 1330 | return -1; |
| 1331 | } |
| 1332 | |
| 1333 | /* |
| 1334 | * XXX - BRUTAL MODE ON |
| 1335 | * We cannot set a real BPT in the child, since it will not be |
| 1336 | * traced at the moment it will reach the trap and would probably |
| 1337 | * die with a core dump. |
| 1338 | * Thus, we are force our way in by taking out two instructions |
| 1339 | * and insert an eternal loop instead, in expectance of the SIGSTOP |
| 1340 | * generated by out PTRACE_ATTACH. |
| 1341 | * Of cause, if we evaporate ourselves in the middle of all this... |
| 1342 | */ |
| 1343 | errno = 0; |
| 1344 | ptrace(PTRACE_POKETEXT, tcp->pid, (char *) tcp->baddr, LOOPA); |
| 1345 | if(errno) { |
| 1346 | perror("setbpt: ptrace(PTRACE_POKETEXT, ...)"); |
| 1347 | return -1; |
| 1348 | } |
| 1349 | tcp->flags |= TCB_BPTSET; |
| 1350 | |
| 1351 | #else /* !SPARC */ |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 1352 | #ifdef IA64 |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1353 | if (ia32) { |
| 1354 | # define LOOP 0x0000feeb |
| 1355 | if (tcp->flags & TCB_BPTSET) { |
| 1356 | fprintf(stderr, "PANIC: bpt already set in pid %u\n", |
| 1357 | tcp->pid); |
| 1358 | return -1; |
| 1359 | } |
| 1360 | if (upeek(tcp->pid, PT_CR_IIP, &tcp->baddr) < 0) |
| 1361 | return -1; |
| 1362 | if (debug) |
| 1363 | fprintf(stderr, "[%d] setting bpt at %lx\n", |
| 1364 | tcp->pid, tcp->baddr); |
| 1365 | tcp->inst[0] = ptrace(PTRACE_PEEKTEXT, tcp->pid, |
| 1366 | (char *) tcp->baddr, 0); |
| 1367 | if (errno) { |
| 1368 | perror("setbpt: ptrace(PTRACE_PEEKTEXT, ...)"); |
| 1369 | return -1; |
| 1370 | } |
| 1371 | ptrace(PTRACE_POKETEXT, tcp->pid, (char *) tcp->baddr, LOOP); |
| 1372 | if (errno) { |
| 1373 | perror("setbpt: ptrace(PTRACE_POKETEXT, ...)"); |
| 1374 | return -1; |
| 1375 | } |
| 1376 | tcp->flags |= TCB_BPTSET; |
| 1377 | } else { |
| 1378 | /* |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1379 | * Our strategy here is to replace the bundle that |
| 1380 | * contained the clone() syscall with a bundle of the |
| 1381 | * form: |
| 1382 | * |
| 1383 | * { 1: br 1b; br 1b; br 1b } |
| 1384 | * |
| 1385 | * This ensures that the newly forked child will loop |
| 1386 | * endlessly until we've got a chance to attach to it. |
| 1387 | */ |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 1388 | # define LOOP0 0x0000100000000017 |
| 1389 | # define LOOP1 0x4000000000200000 |
| 1390 | unsigned long addr, ipsr; |
| 1391 | pid_t pid; |
| 1392 | |
| 1393 | pid = tcp->pid; |
| 1394 | if (upeek(pid, PT_CR_IPSR, &ipsr) < 0) |
| 1395 | return -1; |
| 1396 | if (upeek(pid, PT_CR_IIP, &addr) < 0) |
| 1397 | return -1; |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1398 | /* store "ri" in low two bits */ |
| 1399 | tcp->baddr = addr | ((ipsr >> 41) & 0x3); |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 1400 | |
| 1401 | errno = 0; |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1402 | tcp->inst[0] = ptrace(PTRACE_PEEKTEXT, pid, (char *) addr + 0, |
| 1403 | 0); |
| 1404 | tcp->inst[1] = ptrace(PTRACE_PEEKTEXT, pid, (char *) addr + 8, |
| 1405 | 0); |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 1406 | if (errno) { |
| 1407 | perror("setbpt: ptrace(PTRACE_PEEKTEXT, ...)"); |
| 1408 | return -1; |
| 1409 | } |
| 1410 | |
| 1411 | errno = 0; |
| 1412 | ptrace(PTRACE_POKETEXT, pid, (char *) addr + 0, LOOP0); |
| 1413 | ptrace(PTRACE_POKETEXT, pid, (char *) addr + 8, LOOP1); |
| 1414 | if (errno) { |
| 1415 | perror("setbpt: ptrace(PTRACE_POKETEXT, ...)"); |
| 1416 | return -1; |
| 1417 | } |
| 1418 | tcp->flags |= TCB_BPTSET; |
| 1419 | } |
| 1420 | #else /* !IA64 */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1421 | |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 1422 | #if defined (I386) || defined(X86_64) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1423 | #define LOOP 0x0000feeb |
| 1424 | #elif defined (M68K) |
| 1425 | #define LOOP 0x60fe0000 |
| 1426 | #elif defined (ALPHA) |
Wichert Akkerman | 4dc8a2a | 1999-12-23 14:20:14 +0000 | [diff] [blame] | 1427 | #define LOOP 0xc3ffffff |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1428 | #elif defined (POWERPC) |
Roland McGrath | 1e85cf9 | 2002-12-16 20:40:54 +0000 | [diff] [blame] | 1429 | #define LOOP 0x48000000 |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1430 | #elif defined(ARM) |
Wichert Akkerman | 9a8a37f | 1999-12-24 23:19:31 +0000 | [diff] [blame] | 1431 | #define LOOP 0xEAFFFFFE |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 1432 | #elif defined(MIPS) |
Wichert Akkerman | 4dc8a2a | 1999-12-23 14:20:14 +0000 | [diff] [blame] | 1433 | #define LOOP 0x1000ffff |
| 1434 | #elif defined(S390) |
| 1435 | #define LOOP 0xa7f40000 /* BRC 15,0 */ |
Michal Ludvig | 10a88d0 | 2002-10-07 14:31:00 +0000 | [diff] [blame] | 1436 | #elif defined(S390X) |
| 1437 | #define LOOP 0xa7f4000000000000UL /* BRC 15,0 */ |
Wichert Akkerman | c1652e2 | 2001-03-27 12:17:16 +0000 | [diff] [blame] | 1438 | #elif defined(HPPA) |
| 1439 | #define LOOP 0xe81f1ff7 /* b,l,n <loc>,r0 */ |
Wichert Akkerman | ccef637 | 2002-05-01 16:39:22 +0000 | [diff] [blame] | 1440 | #elif defined(SH) |
| 1441 | #ifdef __LITTLE_ENDIAN__ |
| 1442 | #define LOOP 0x0000affe |
| 1443 | #else |
| 1444 | #define LOOP 0xfeaf0000 |
| 1445 | #endif |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1446 | #else |
| 1447 | #error unknown architecture |
| 1448 | #endif |
| 1449 | |
| 1450 | if (tcp->flags & TCB_BPTSET) { |
| 1451 | fprintf(stderr, "PANIC: bpt already set in pid %u\n", tcp->pid); |
| 1452 | return -1; |
| 1453 | } |
| 1454 | #if defined (I386) |
| 1455 | if (upeek(tcp->pid, 4*EIP, &tcp->baddr) < 0) |
| 1456 | return -1; |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 1457 | #elif defined (X86_64) |
| 1458 | if (upeek(tcp->pid, 8*RIP, &tcp->baddr) < 0) |
| 1459 | return -1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1460 | #elif defined (M68K) |
| 1461 | if (upeek(tcp->pid, 4*PT_PC, &tcp->baddr) < 0) |
| 1462 | return -1; |
| 1463 | #elif defined (ALPHA) |
| 1464 | return -1; |
| 1465 | #elif defined (ARM) |
| 1466 | return -1; |
Wichert Akkerman | f90da01 | 1999-10-31 21:15:38 +0000 | [diff] [blame] | 1467 | #elif defined (MIPS) |
| 1468 | return -1; /* FIXME: I do not know what i do - Flo */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1469 | #elif defined (POWERPC) |
| 1470 | if (upeek(tcp->pid, 4*PT_NIP, &tcp->baddr) < 0) |
| 1471 | return -1; |
Michal Ludvig | 10a88d0 | 2002-10-07 14:31:00 +0000 | [diff] [blame] | 1472 | #elif defined(S390) || defined(S390X) |
Wichert Akkerman | 4dc8a2a | 1999-12-23 14:20:14 +0000 | [diff] [blame] | 1473 | if (upeek(tcp->pid,PT_PSWADDR, &tcp->baddr) < 0) |
| 1474 | return -1; |
Wichert Akkerman | c1652e2 | 2001-03-27 12:17:16 +0000 | [diff] [blame] | 1475 | #elif defined(HPPA) |
| 1476 | if (upeek(tcp->pid, PT_IAOQ0, &tcp->baddr) < 0) |
| 1477 | return -1; |
| 1478 | tcp->baddr &= ~0x03; |
Wichert Akkerman | ccef637 | 2002-05-01 16:39:22 +0000 | [diff] [blame] | 1479 | #elif defined(SH) |
| 1480 | if (upeek(tcp->pid, 4*REG_PC, &tcp->baddr) < 0) |
| 1481 | return -1; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1482 | #else |
| 1483 | #error unknown architecture |
| 1484 | #endif |
| 1485 | if (debug) |
| 1486 | fprintf(stderr, "[%d] setting bpt at %lx\n", tcp->pid, tcp->baddr); |
| 1487 | tcp->inst[0] = ptrace(PTRACE_PEEKTEXT, tcp->pid, (char *) tcp->baddr, 0); |
| 1488 | if (errno) { |
| 1489 | perror("setbpt: ptrace(PTRACE_PEEKTEXT, ...)"); |
| 1490 | return -1; |
| 1491 | } |
| 1492 | ptrace(PTRACE_POKETEXT, tcp->pid, (char *) tcp->baddr, LOOP); |
| 1493 | if (errno) { |
| 1494 | perror("setbpt: ptrace(PTRACE_POKETEXT, ...)"); |
| 1495 | return -1; |
| 1496 | } |
| 1497 | tcp->flags |= TCB_BPTSET; |
| 1498 | |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 1499 | #endif /* !IA64 */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1500 | #endif /* SPARC */ |
| 1501 | #endif /* LINUX */ |
| 1502 | |
| 1503 | #ifdef SUNOS4 |
| 1504 | #ifdef SPARC /* This code is slightly sparc specific */ |
| 1505 | |
Wichert Akkerman | e6f876c | 1999-06-22 15:28:30 +0000 | [diff] [blame] | 1506 | struct regs regs; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1507 | #define BPT 0x91d02001 /* ta 1 */ |
| 1508 | #define LOOP 0x10800000 /* ba 0 */ |
| 1509 | #define LOOPA 0x30800000 /* ba,a 0 */ |
| 1510 | #define NOP 0x01000000 |
| 1511 | #if LOOPA |
| 1512 | static int loopdeloop[1] = {LOOPA}; |
| 1513 | #else |
| 1514 | static int loopdeloop[2] = {LOOP, NOP}; |
| 1515 | #endif |
| 1516 | |
| 1517 | if (tcp->flags & TCB_BPTSET) { |
| 1518 | fprintf(stderr, "PANIC: TCB already set in pid %u\n", tcp->pid); |
| 1519 | return -1; |
| 1520 | } |
| 1521 | if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) { |
| 1522 | perror("setbpt: ptrace(PTRACE_GETREGS, ...)"); |
| 1523 | return -1; |
| 1524 | } |
| 1525 | tcp->baddr = regs.r_o7 + 8; |
| 1526 | if (ptrace(PTRACE_READTEXT, tcp->pid, (char *)tcp->baddr, |
| 1527 | sizeof tcp->inst, (char *)tcp->inst) < 0) { |
| 1528 | perror("setbpt: ptrace(PTRACE_READTEXT, ...)"); |
| 1529 | return -1; |
| 1530 | } |
| 1531 | |
| 1532 | /* |
| 1533 | * XXX - BRUTAL MODE ON |
| 1534 | * We cannot set a real BPT in the child, since it will not be |
| 1535 | * traced at the moment it will reach the trap and would probably |
| 1536 | * die with a core dump. |
| 1537 | * Thus, we are force our way in by taking out two instructions |
| 1538 | * and insert an eternal loop in stead, in expectance of the SIGSTOP |
| 1539 | * generated by out PTRACE_ATTACH. |
| 1540 | * Of cause, if we evaporate ourselves in the middle of all this... |
| 1541 | */ |
| 1542 | if (ptrace(PTRACE_WRITETEXT, tcp->pid, (char *) tcp->baddr, |
| 1543 | sizeof loopdeloop, (char *) loopdeloop) < 0) { |
| 1544 | perror("setbpt: ptrace(PTRACE_WRITETEXT, ...)"); |
| 1545 | return -1; |
| 1546 | } |
| 1547 | tcp->flags |= TCB_BPTSET; |
| 1548 | |
| 1549 | #endif /* SPARC */ |
| 1550 | #endif /* SUNOS4 */ |
| 1551 | |
| 1552 | return 0; |
| 1553 | } |
| 1554 | |
| 1555 | int |
| 1556 | clearbpt(tcp) |
| 1557 | struct tcb *tcp; |
| 1558 | { |
| 1559 | |
| 1560 | #ifdef LINUX |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 1561 | #if defined(I386) || defined(X86_64) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1562 | long eip; |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1563 | #elif defined(POWERPC) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1564 | long pc; |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1565 | #elif defined(M68K) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1566 | long pc; |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1567 | #elif defined(ALPHA) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1568 | long pc; |
Wichert Akkerman | c1652e2 | 2001-03-27 12:17:16 +0000 | [diff] [blame] | 1569 | #elif defined(HPPA) |
| 1570 | long iaoq; |
Wichert Akkerman | ccef637 | 2002-05-01 16:39:22 +0000 | [diff] [blame] | 1571 | #elif defined(SH) |
| 1572 | long pc; |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1573 | #endif /* architecture */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1574 | |
| 1575 | #ifdef SPARC |
| 1576 | /* Again, we borrow the SunOS breakpoint code. */ |
| 1577 | if (!(tcp->flags & TCB_BPTSET)) { |
| 1578 | fprintf(stderr, "PANIC: TCB not set in pid %u\n", tcp->pid); |
| 1579 | return -1; |
| 1580 | } |
| 1581 | errno = 0; |
| 1582 | ptrace(PTRACE_POKETEXT, tcp->pid, (char *) tcp->baddr, tcp->inst[0]); |
| 1583 | if(errno) { |
| 1584 | perror("clearbtp: ptrace(PTRACE_POKETEXT, ...)"); |
| 1585 | return -1; |
| 1586 | } |
| 1587 | tcp->flags &= ~TCB_BPTSET; |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1588 | #elif defined(IA64) |
Wichert Akkerman | 7b3346b | 2001-10-09 23:47:38 +0000 | [diff] [blame] | 1589 | if (ia32) { |
| 1590 | unsigned long addr; |
| 1591 | |
| 1592 | if (debug) |
| 1593 | fprintf(stderr, "[%d] clearing bpt\n", tcp->pid); |
| 1594 | if (!(tcp->flags & TCB_BPTSET)) { |
| 1595 | fprintf(stderr, "PANIC: TCB not set in pid %u\n", tcp->pid); |
| 1596 | return -1; |
| 1597 | } |
| 1598 | errno = 0; |
| 1599 | ptrace(PTRACE_POKETEXT, tcp->pid, (char *) tcp->baddr, tcp->inst[0]); |
| 1600 | if (errno) { |
| 1601 | perror("clearbtp: ptrace(PTRACE_POKETEXT, ...)"); |
| 1602 | return -1; |
| 1603 | } |
| 1604 | tcp->flags &= ~TCB_BPTSET; |
| 1605 | |
| 1606 | if (upeek(tcp->pid, PT_CR_IIP, &addr) < 0) |
| 1607 | return -1; |
| 1608 | if (addr != tcp->baddr) { |
| 1609 | /* The breakpoint has not been reached yet. */ |
| 1610 | if (debug) |
| 1611 | fprintf(stderr, |
| 1612 | "NOTE: PC not at bpt (pc %#lx baddr %#lx)\n", |
| 1613 | addr, tcp->baddr); |
| 1614 | return 0; |
| 1615 | } |
| 1616 | } else { |
Wichert Akkerman | 8b1b40c | 2000-02-03 21:58:30 +0000 | [diff] [blame] | 1617 | unsigned long addr, ipsr; |
| 1618 | pid_t pid; |
| 1619 | |
| 1620 | pid = tcp->pid; |
| 1621 | |
| 1622 | if (upeek(pid, PT_CR_IPSR, &ipsr) < 0) |
| 1623 | return -1; |
| 1624 | if (upeek(pid, PT_CR_IIP, &addr) < 0) |
| 1625 | return -1; |
| 1626 | |
| 1627 | /* restore original bundle: */ |
| 1628 | errno = 0; |
| 1629 | ptrace(PTRACE_POKETEXT, pid, (char *) addr + 0, tcp->inst[0]); |
| 1630 | ptrace(PTRACE_POKETEXT, pid, (char *) addr + 8, tcp->inst[1]); |
| 1631 | if (errno) { |
| 1632 | perror("clearbpt: ptrace(PTRACE_POKETEXT, ...)"); |
| 1633 | return -1; |
| 1634 | } |
| 1635 | |
| 1636 | /* restore original "ri" in ipsr: */ |
| 1637 | ipsr = (ipsr & ~(0x3ul << 41)) | ((tcp->baddr & 0x3) << 41); |
| 1638 | errno = 0; |
| 1639 | ptrace(PTRACE_POKEUSER, pid, (char *) PT_CR_IPSR, ipsr); |
| 1640 | if (errno) { |
| 1641 | perror("clrbpt: ptrace(PTRACE_POKEUSER, ...)"); |
| 1642 | return -1; |
| 1643 | } |
| 1644 | |
| 1645 | tcp->flags &= ~TCB_BPTSET; |
| 1646 | |
| 1647 | if (addr != (tcp->baddr & ~0x3)) { |
| 1648 | /* the breakpoint has not been reached yet. */ |
| 1649 | if (debug) |
| 1650 | fprintf(stderr, "NOTE: PC not at bpt (pc %#lx baddr %#lx)\n", |
| 1651 | addr, tcp->baddr); |
| 1652 | return 0; |
| 1653 | } |
| 1654 | } |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1655 | #else /* !IA64 && ! SPARC */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1656 | |
| 1657 | if (debug) |
| 1658 | fprintf(stderr, "[%d] clearing bpt\n", tcp->pid); |
| 1659 | if (!(tcp->flags & TCB_BPTSET)) { |
| 1660 | fprintf(stderr, "PANIC: TCB not set in pid %u\n", tcp->pid); |
| 1661 | return -1; |
| 1662 | } |
| 1663 | errno = 0; |
| 1664 | ptrace(PTRACE_POKETEXT, tcp->pid, (char *) tcp->baddr, tcp->inst[0]); |
| 1665 | if (errno) { |
| 1666 | perror("clearbtp: ptrace(PTRACE_POKETEXT, ...)"); |
| 1667 | return -1; |
| 1668 | } |
| 1669 | tcp->flags &= ~TCB_BPTSET; |
| 1670 | |
| 1671 | #ifdef I386 |
| 1672 | if (upeek(tcp->pid, 4*EIP, &eip) < 0) |
| 1673 | return -1; |
| 1674 | if (eip != tcp->baddr) { |
| 1675 | /* The breakpoint has not been reached yet. */ |
| 1676 | if (debug) |
| 1677 | fprintf(stderr, |
| 1678 | "NOTE: PC not at bpt (pc %#lx baddr %#lx)\n", |
| 1679 | eip, tcp->baddr); |
| 1680 | return 0; |
| 1681 | } |
Michal Ludvig | 0e03550 | 2002-09-23 15:41:01 +0000 | [diff] [blame] | 1682 | #elif defined(X86_64) |
| 1683 | if (upeek(tcp->pid, 8*RIP, &eip) < 0) |
| 1684 | return -1; |
| 1685 | if (eip != tcp->baddr) { |
| 1686 | /* The breakpoint has not been reached yet. */ |
| 1687 | if (debug) |
| 1688 | fprintf(stderr, |
| 1689 | "NOTE: PC not at bpt (pc %#lx baddr %#lx)\n", |
| 1690 | eip, tcp->baddr); |
| 1691 | return 0; |
| 1692 | } |
Wichert Akkerman | c792698 | 2000-04-10 22:22:31 +0000 | [diff] [blame] | 1693 | #elif defined(POWERPC) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1694 | if (upeek(tcp->pid, 4*PT_NIP, &pc) < 0) |
| 1695 | return -1; |
| 1696 | if (pc != tcp->baddr) { |
| 1697 | /* The breakpoint has not been reached yet. */ |
| 1698 | if (debug) |
| 1699 | fprintf(stderr, "NOTE: PC not at bpt (pc %#lx baddr %#lx)\n", |
| 1700 | pc, tcp->baddr); |
| 1701 | return 0; |
| 1702 | } |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1703 | #elif defined(M68K) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1704 | if (upeek(tcp->pid, 4*PT_PC, &pc) < 0) |
| 1705 | return -1; |
| 1706 | if (pc != tcp->baddr) { |
| 1707 | /* The breakpoint has not been reached yet. */ |
| 1708 | if (debug) |
| 1709 | fprintf(stderr, "NOTE: PC not at bpt (pc %#lx baddr %#lx)\n", |
| 1710 | pc, tcp->baddr); |
| 1711 | return 0; |
| 1712 | } |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1713 | #elif defined(ALPHA) |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1714 | if (upeek(tcp->pid, REG_PC, &pc) < 0) |
| 1715 | return -1; |
| 1716 | if (pc != tcp->baddr) { |
| 1717 | /* The breakpoint has not been reached yet. */ |
| 1718 | if (debug) |
| 1719 | fprintf(stderr, "NOTE: PC not at bpt (pc %#lx baddr %#lx)\n", |
| 1720 | pc, tcp->baddr); |
| 1721 | return 0; |
| 1722 | } |
Wichert Akkerman | c1652e2 | 2001-03-27 12:17:16 +0000 | [diff] [blame] | 1723 | #elif defined(HPPA) |
| 1724 | if (upeek(tcp->pid, PT_IAOQ0, &iaoq) < 0) |
| 1725 | return -1; |
| 1726 | iaoq &= ~0x03; |
| 1727 | if (iaoq != tcp->baddr && iaoq != tcp->baddr + 4) { |
| 1728 | /* The breakpoint has not been reached yet. */ |
| 1729 | if (debug) |
| 1730 | fprintf(stderr, "NOTE: PC not at bpt (iaoq %#lx baddr %#lx)\n", |
| 1731 | iaoq, tcp->baddr); |
| 1732 | return 0; |
| 1733 | } |
| 1734 | iaoq = tcp->baddr | 3; |
| 1735 | /* We should be pointing at a 'ldi -1000,r1' in glibc, so it is |
| 1736 | * safe to set both IAOQ0 and IAOQ1 to that so the PSW N bit |
| 1737 | * has no significant effect. |
| 1738 | */ |
| 1739 | ptrace(PTRACE_POKEUSER, tcp->pid, (void *)PT_IAOQ0, iaoq); |
| 1740 | ptrace(PTRACE_POKEUSER, tcp->pid, (void *)PT_IAOQ1, iaoq); |
Wichert Akkerman | ccef637 | 2002-05-01 16:39:22 +0000 | [diff] [blame] | 1741 | #elif defined(SH) |
| 1742 | if (upeek(tcp->pid, 4*REG_PC, &pc) < 0) |
| 1743 | return -1; |
| 1744 | if (pc != tcp->baddr) { |
| 1745 | /* The breakpoint has not been reached yet. */ |
| 1746 | if (debug) |
| 1747 | fprintf(stderr, "NOTE: PC not at bpt (pc %#lx baddr %#lx)\n", |
| 1748 | pc, tcp->baddr); |
| 1749 | return 0; |
| 1750 | } |
| 1751 | |
Wichert Akkerman | faf7222 | 2000-02-19 23:59:03 +0000 | [diff] [blame] | 1752 | #endif /* arch */ |
| 1753 | #endif /* !SPARC && !IA64 */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1754 | #endif /* LINUX */ |
| 1755 | |
| 1756 | #ifdef SUNOS4 |
| 1757 | #ifdef SPARC |
| 1758 | |
| 1759 | #if !LOOPA |
Wichert Akkerman | e6f876c | 1999-06-22 15:28:30 +0000 | [diff] [blame] | 1760 | struct regs regs; |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1761 | #endif |
| 1762 | |
| 1763 | if (!(tcp->flags & TCB_BPTSET)) { |
| 1764 | fprintf(stderr, "PANIC: TCB not set in pid %u\n", tcp->pid); |
| 1765 | return -1; |
| 1766 | } |
| 1767 | if (ptrace(PTRACE_WRITETEXT, tcp->pid, (char *) tcp->baddr, |
| 1768 | sizeof tcp->inst, (char *) tcp->inst) < 0) { |
| 1769 | perror("clearbtp: ptrace(PTRACE_WRITETEXT, ...)"); |
| 1770 | return -1; |
| 1771 | } |
| 1772 | tcp->flags &= ~TCB_BPTSET; |
| 1773 | |
| 1774 | #if !LOOPA |
| 1775 | /* |
| 1776 | * Since we don't have a single instruction breakpoint, we may have |
| 1777 | * to adjust the program counter after removing the our `breakpoint'. |
| 1778 | */ |
| 1779 | if (ptrace(PTRACE_GETREGS, tcp->pid, (char *)®s, 0) < 0) { |
| 1780 | perror("clearbpt: ptrace(PTRACE_GETREGS, ...)"); |
| 1781 | return -1; |
| 1782 | } |
| 1783 | if ((regs.r_pc < tcp->baddr) || |
| 1784 | (regs.r_pc > tcp->baddr + 4)) { |
| 1785 | /* The breakpoint has not been reached yet */ |
| 1786 | if (debug) |
| 1787 | fprintf(stderr, |
| 1788 | "NOTE: PC not at bpt (pc %#x baddr %#x)\n", |
| 1789 | regs.r_pc, tcp->parent->baddr); |
| 1790 | return 0; |
| 1791 | } |
| 1792 | if (regs.r_pc != tcp->baddr) |
| 1793 | if (debug) |
| 1794 | fprintf(stderr, "NOTE: PC adjusted (%#x -> %#x\n", |
| 1795 | regs.r_pc, tcp->baddr); |
| 1796 | |
| 1797 | regs.r_pc = tcp->baddr; |
| 1798 | if (ptrace(PTRACE_SETREGS, tcp->pid, (char *)®s, 0) < 0) { |
| 1799 | perror("clearbpt: ptrace(PTRACE_SETREGS, ...)"); |
| 1800 | return -1; |
| 1801 | } |
| 1802 | #endif /* LOOPA */ |
| 1803 | #endif /* SPARC */ |
| 1804 | #endif /* SUNOS4 */ |
| 1805 | |
| 1806 | return 0; |
| 1807 | } |
| 1808 | |
Roland McGrath | d81f1d9 | 2003-01-09 06:53:34 +0000 | [diff] [blame] | 1809 | #endif |
| 1810 | |
Wichert Akkerman | bf79f2e | 2000-09-01 21:03:06 +0000 | [diff] [blame] | 1811 | #endif /* !USE_PROCFS */ |
Wichert Akkerman | 76baf7c | 1999-02-19 00:21:36 +0000 | [diff] [blame] | 1812 | |
| 1813 | #ifdef SUNOS4 |
| 1814 | |
| 1815 | static int |
| 1816 | getex(pid, hdr) |
| 1817 | int pid; |
| 1818 | struct exec *hdr; |
| 1819 | { |
| 1820 | int n; |
| 1821 | |
| 1822 | for (n = 0; n < sizeof *hdr; n += 4) { |
| 1823 | long res; |
| 1824 | if (upeek(pid, uoff(u_exdata) + n, &res) < 0) |
| 1825 | return -1; |
| 1826 | memcpy(((char *) hdr) + n, &res, 4); |
| 1827 | } |
| 1828 | if (debug) { |
| 1829 | fprintf(stderr, "[struct exec: magic: %o version %u Mach %o\n", |
| 1830 | hdr->a_magic, hdr->a_toolversion, hdr->a_machtype); |
| 1831 | fprintf(stderr, "Text %lu Data %lu Bss %lu Syms %lu Entry %#lx]\n", |
| 1832 | hdr->a_text, hdr->a_data, hdr->a_bss, hdr->a_syms, hdr->a_entry); |
| 1833 | } |
| 1834 | return 0; |
| 1835 | } |
| 1836 | |
| 1837 | int |
| 1838 | fixvfork(tcp) |
| 1839 | struct tcb *tcp; |
| 1840 | { |
| 1841 | int pid = tcp->pid; |
| 1842 | /* |
| 1843 | * Change `vfork' in a freshly exec'ed dynamically linked |
| 1844 | * executable's (internal) symbol table to plain old `fork' |
| 1845 | */ |
| 1846 | |
| 1847 | struct exec hdr; |
| 1848 | struct link_dynamic dyn; |
| 1849 | struct link_dynamic_2 ld; |
| 1850 | char *strtab, *cp; |
| 1851 | |
| 1852 | if (getex(pid, &hdr) < 0) |
| 1853 | return -1; |
| 1854 | if (!hdr.a_dynamic) |
| 1855 | return -1; |
| 1856 | |
| 1857 | if (umove(tcp, (int) N_DATADDR(hdr), &dyn) < 0) { |
| 1858 | fprintf(stderr, "Cannot read DYNAMIC\n"); |
| 1859 | return -1; |
| 1860 | } |
| 1861 | if (umove(tcp, (int) dyn.ld_un.ld_2, &ld) < 0) { |
| 1862 | fprintf(stderr, "Cannot read link_dynamic_2\n"); |
| 1863 | return -1; |
| 1864 | } |
| 1865 | if ((strtab = malloc((unsigned)ld.ld_symb_size)) == NULL) { |
| 1866 | fprintf(stderr, "fixvfork: out of memory\n"); |
| 1867 | return -1; |
| 1868 | } |
| 1869 | if (umoven(tcp, (int)ld.ld_symbols+(int)N_TXTADDR(hdr), |
| 1870 | (int)ld.ld_symb_size, strtab) < 0) |
| 1871 | goto err; |
| 1872 | |
| 1873 | #if 0 |
| 1874 | for (cp = strtab; cp < strtab + ld.ld_symb_size; ) { |
| 1875 | fprintf(stderr, "[symbol: %s]\n", cp); |
| 1876 | cp += strlen(cp)+1; |
| 1877 | } |
| 1878 | return 0; |
| 1879 | #endif |
| 1880 | for (cp = strtab; cp < strtab + ld.ld_symb_size; ) { |
| 1881 | if (strcmp(cp, "_vfork") == 0) { |
| 1882 | if (debug) |
| 1883 | fprintf(stderr, "fixvfork: FOUND _vfork\n"); |
| 1884 | strcpy(cp, "_fork"); |
| 1885 | break; |
| 1886 | } |
| 1887 | cp += strlen(cp)+1; |
| 1888 | } |
| 1889 | if (cp < strtab + ld.ld_symb_size) |
| 1890 | /* |
| 1891 | * Write entire symbol table back to avoid |
| 1892 | * memory alignment bugs in ptrace |
| 1893 | */ |
| 1894 | if (tload(pid, (int)ld.ld_symbols+(int)N_TXTADDR(hdr), |
| 1895 | (int)ld.ld_symb_size, strtab) < 0) |
| 1896 | goto err; |
| 1897 | |
| 1898 | free(strtab); |
| 1899 | return 0; |
| 1900 | |
| 1901 | err: |
| 1902 | free(strtab); |
| 1903 | return -1; |
| 1904 | } |
| 1905 | |
| 1906 | #endif /* SUNOS4 */ |