| 1 | /* Machine independent support for SVR4 /proc (process file system) for GDB. |
| 2 | Copyright (C) 1991 Free Software Foundation, Inc. |
| 3 | Written by Fred Fish at Cygnus Support. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 20 | |
| 21 | |
| 22 | /* N O T E S |
| 23 | |
| 24 | For information on the details of using /proc consult section proc(4) |
| 25 | in the UNIX System V Release 4 System Administrator's Reference Manual. |
| 26 | |
| 27 | The general register and floating point register sets are manipulated by |
| 28 | separate ioctl's. This file makes the assumption that if FP0_REGNUM is |
| 29 | defined, then support for the floating point register set is desired, |
| 30 | regardless of whether or not the actual target has floating point hardware. |
| 31 | |
| 32 | */ |
| 33 | |
| 34 | |
| 35 | #include "defs.h" |
| 36 | |
| 37 | #ifdef USE_PROC_FS /* Entire file goes away if not using /proc */ |
| 38 | |
| 39 | #include <time.h> |
| 40 | #include <sys/procfs.h> |
| 41 | #include <fcntl.h> |
| 42 | #include <errno.h> |
| 43 | |
| 44 | #include "inferior.h" |
| 45 | #include "target.h" |
| 46 | #include "signame.h" |
| 47 | |
| 48 | #define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */ |
| 49 | |
| 50 | #ifndef PROC_NAME_FMT |
| 51 | #define PROC_NAME_FMT "/proc/%d" |
| 52 | #endif |
| 53 | |
| 54 | #if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */ |
| 55 | CORE_ADDR kernel_u_addr; |
| 56 | #endif |
| 57 | |
| 58 | #ifdef BROKEN_SIGINFO_H /* Workaround broken SGS <sys/siginfo.h> */ |
| 59 | #undef si_pid |
| 60 | #define si_pid _data._proc.pid |
| 61 | #undef si_uid |
| 62 | #define si_uid _data._proc._pdata._kill.uid |
| 63 | #endif /* BROKEN_SIGINFO_H */ |
| 64 | |
| 65 | /* All access to the inferior, either one started by gdb or one that has |
| 66 | been attached to, is controlled by an instance of a procinfo structure, |
| 67 | defined below. Since gdb currently only handles one inferior at a time, |
| 68 | the procinfo structure for the inferior is statically allocated and |
| 69 | only one exists at any given time. There is a separate procinfo |
| 70 | structure for use by the "info proc" command, so that we can print |
| 71 | useful information about any random process without interfering with |
| 72 | the inferior's procinfo information. */ |
| 73 | |
| 74 | struct procinfo { |
| 75 | int valid; /* Nonzero if pid, fd, & pathname are valid */ |
| 76 | int pid; /* Process ID of inferior */ |
| 77 | int fd; /* File descriptor for /proc entry */ |
| 78 | char *pathname; /* Pathname to /proc entry */ |
| 79 | int was_stopped; /* Nonzero if was stopped prior to attach */ |
| 80 | int nopass_next_sigstop; /* Don't pass a sigstop on next resume */ |
| 81 | prrun_t prrun; /* Control state when it is run */ |
| 82 | prstatus_t prstatus; /* Current process status info */ |
| 83 | gregset_t gregset; /* General register set */ |
| 84 | fpregset_t fpregset; /* Floating point register set */ |
| 85 | fltset_t fltset; /* Current traced hardware fault set */ |
| 86 | sigset_t trace; /* Current traced signal set */ |
| 87 | sysset_t exitset; /* Current traced system call exit set */ |
| 88 | sysset_t entryset; /* Current traced system call entry set */ |
| 89 | fltset_t saved_fltset; /* Saved traced hardware fault set */ |
| 90 | sigset_t saved_trace; /* Saved traced signal set */ |
| 91 | sigset_t saved_sighold; /* Saved held signal set */ |
| 92 | sysset_t saved_exitset; /* Saved traced system call exit set */ |
| 93 | sysset_t saved_entryset; /* Saved traced system call entry set */ |
| 94 | }; |
| 95 | |
| 96 | static struct procinfo pi; /* Inferior's process information */ |
| 97 | |
| 98 | /* Much of the information used in the /proc interface, particularly for |
| 99 | printing status information, is kept as tables of structures of the |
| 100 | following form. These tables can be used to map numeric values to |
| 101 | their symbolic names and to a string that describes their specific use. */ |
| 102 | |
| 103 | struct trans { |
| 104 | int value; /* The numeric value */ |
| 105 | char *name; /* The equivalent symbolic value */ |
| 106 | char *desc; /* Short description of value */ |
| 107 | }; |
| 108 | |
| 109 | /* Translate bits in the pr_flags member of the prstatus structure, into the |
| 110 | names and desc information. */ |
| 111 | |
| 112 | static struct trans pr_flag_table[] = |
| 113 | { |
| 114 | #if defined (PR_STOPPED) |
| 115 | PR_STOPPED, "PR_STOPPED", "Process is stopped", |
| 116 | #endif |
| 117 | #if defined (PR_ISTOP) |
| 118 | PR_ISTOP, "PR_ISTOP", "Stopped on an event of interest", |
| 119 | #endif |
| 120 | #if defined (PR_DSTOP) |
| 121 | PR_DSTOP, "PR_DSTOP", "A stop directive is in effect", |
| 122 | #endif |
| 123 | #if defined (PR_ASLEEP) |
| 124 | PR_ASLEEP, "PR_ASLEEP", "Sleeping in an interruptible system call", |
| 125 | #endif |
| 126 | #if defined (PR_FORK) |
| 127 | PR_FORK, "PR_FORK", "Inherit-on-fork is in effect", |
| 128 | #endif |
| 129 | #if defined (PR_RLC) |
| 130 | PR_RLC, "PR_RLC", "Run-on-last-close is in effect", |
| 131 | #endif |
| 132 | #if defined (PR_PTRACE) |
| 133 | PR_PTRACE, "PR_PTRACE", "Process is being controlled by ptrace", |
| 134 | #endif |
| 135 | #if defined (PR_PCINVAL) |
| 136 | PR_PCINVAL, "PR_PCINVAL", "PC refers to an invalid virtual address", |
| 137 | #endif |
| 138 | #if defined (PR_ISSYS) |
| 139 | PR_ISSYS, "PR_ISSYS", "Is a system process", |
| 140 | #endif |
| 141 | #if defined (PR_STEP) |
| 142 | PR_STEP, "PR_STEP", "Process has single step pending", |
| 143 | #endif |
| 144 | #if defined (PR_KLC) |
| 145 | PR_KLC, "PR_KLC", "Kill-on-last-close is in effect", |
| 146 | #endif |
| 147 | #if defined (PR_ASYNC) |
| 148 | PR_ASYNC, "PR_ASYNC", "Asynchronous stop is in effect", |
| 149 | #endif |
| 150 | #if defined (PR_PCOMPAT) |
| 151 | PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect", |
| 152 | #endif |
| 153 | 0, NULL, NULL |
| 154 | }; |
| 155 | |
| 156 | /* Translate values in the pr_why field of the prstatus struct. */ |
| 157 | |
| 158 | static struct trans pr_why_table[] = |
| 159 | { |
| 160 | #if defined (PR_REQUESTED) |
| 161 | PR_REQUESTED, "PR_REQUESTED", "Directed to stop via PIOCSTOP/PIOCWSTOP", |
| 162 | #endif |
| 163 | #if defined (PR_SIGNALLED) |
| 164 | PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal", |
| 165 | #endif |
| 166 | #if defined (PR_FAULTED) |
| 167 | PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault", |
| 168 | #endif |
| 169 | #if defined (PR_SYSENTRY) |
| 170 | PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call", |
| 171 | #endif |
| 172 | #if defined (PR_SYSEXIT) |
| 173 | PR_SYSEXIT, "PR_SYSEXIT", "Exit from a traced system call", |
| 174 | #endif |
| 175 | #if defined (PR_JOBCONTROL) |
| 176 | PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action", |
| 177 | #endif |
| 178 | #if defined (PR_SUSPENDED) |
| 179 | PR_SUSPENDED, "PR_SUSPENDED", "Process suspended", |
| 180 | #endif |
| 181 | 0, NULL, NULL |
| 182 | }; |
| 183 | |
| 184 | /* Hardware fault translation table. */ |
| 185 | |
| 186 | static struct trans faults_table[] = |
| 187 | { |
| 188 | #if defined (FLTILL) |
| 189 | FLTILL, "FLTILL", "Illegal instruction", |
| 190 | #endif |
| 191 | #if defined (FLTPRIV) |
| 192 | FLTPRIV, "FLTPRIV", "Privileged instruction", |
| 193 | #endif |
| 194 | #if defined (FLTBPT) |
| 195 | FLTBPT, "FLTBPT", "Breakpoint trap", |
| 196 | #endif |
| 197 | #if defined (FLTTRACE) |
| 198 | FLTTRACE, "FLTTRACE", "Trace trap", |
| 199 | #endif |
| 200 | #if defined (FLTACCESS) |
| 201 | FLTACCESS, "FLTACCESS", "Memory access fault", |
| 202 | #endif |
| 203 | #if defined (FLTBOUNDS) |
| 204 | FLTBOUNDS, "FLTBOUNDS", "Memory bounds violation", |
| 205 | #endif |
| 206 | #if defined (FLTIOVF) |
| 207 | FLTIOVF, "FLTIOVF", "Integer overflow", |
| 208 | #endif |
| 209 | #if defined (FLTIZDIV) |
| 210 | FLTIZDIV, "FLTIZDIV", "Integer zero divide", |
| 211 | #endif |
| 212 | #if defined (FLTFPE) |
| 213 | FLTFPE, "FLTFPE", "Floating-point exception", |
| 214 | #endif |
| 215 | #if defined (FLTSTACK) |
| 216 | FLTSTACK, "FLTSTACK", "Unrecoverable stack fault", |
| 217 | #endif |
| 218 | #if defined (FLTPAGE) |
| 219 | FLTPAGE, "FLTPAGE", "Recoverable page fault", |
| 220 | #endif |
| 221 | 0, NULL, NULL |
| 222 | }; |
| 223 | |
| 224 | /* Translation table for signal generation information. See UNIX System |
| 225 | V Release 4 Programmer's Reference Manual, siginfo(5). */ |
| 226 | |
| 227 | static struct sigcode { |
| 228 | int signo; |
| 229 | int code; |
| 230 | char *codename; |
| 231 | char *desc; |
| 232 | } siginfo_table[] = { |
| 233 | #if defined (SIGILL) && defined (ILL_ILLOPC) |
| 234 | SIGILL, ILL_ILLOPC, "ILL_ILLOPC", "Illegal opcode", |
| 235 | #endif |
| 236 | #if defined (SIGILL) && defined (ILL_ILLOPN) |
| 237 | SIGILL, ILL_ILLOPN, "ILL_ILLOPN", "Illegal operand", |
| 238 | #endif |
| 239 | #if defined (SIGILL) && defined (ILL_ILLADR) |
| 240 | SIGILL, ILL_ILLADR, "ILL_ILLADR", "Illegal addressing mode", |
| 241 | #endif |
| 242 | #if defined (SIGILL) && defined (ILL_ILLTRP) |
| 243 | SIGILL, ILL_ILLTRP, "ILL_ILLTRP", "Illegal trap", |
| 244 | #endif |
| 245 | #if defined (SIGILL) && defined (ILL_PRVOPC) |
| 246 | SIGILL, ILL_PRVOPC, "ILL_PRVOPC", "Privileged opcode", |
| 247 | #endif |
| 248 | #if defined (SIGILL) && defined (ILL_PRVREG) |
| 249 | SIGILL, ILL_PRVREG, "ILL_PRVREG", "Privileged register", |
| 250 | #endif |
| 251 | #if defined (SIGILL) && defined (ILL_COPROC) |
| 252 | SIGILL, ILL_COPROC, "ILL_COPROC", "Coprocessor error", |
| 253 | #endif |
| 254 | #if defined (SIGILL) && defined (ILL_BADSTK) |
| 255 | SIGILL, ILL_BADSTK, "ILL_BADSTK", "Internal stack error", |
| 256 | #endif |
| 257 | #if defined (SIGFPE) && defined (FPE_INTDIV) |
| 258 | SIGFPE, FPE_INTDIV, "FPE_INTDIV", "Integer divide by zero", |
| 259 | #endif |
| 260 | #if defined (SIGFPE) && defined (FPE_INTOVF) |
| 261 | SIGFPE, FPE_INTOVF, "FPE_INTOVF", "Integer overflow", |
| 262 | #endif |
| 263 | #if defined (SIGFPE) && defined (FPE_FLTDIV) |
| 264 | SIGFPE, FPE_FLTDIV, "FPE_FLTDIV", "Floating point divide by zero", |
| 265 | #endif |
| 266 | #if defined (SIGFPE) && defined (FPE_FLTOVF) |
| 267 | SIGFPE, FPE_FLTOVF, "FPE_FLTOVF", "Floating point overflow", |
| 268 | #endif |
| 269 | #if defined (SIGFPE) && defined (FPE_FLTUND) |
| 270 | SIGFPE, FPE_FLTUND, "FPE_FLTUND", "Floating point underflow", |
| 271 | #endif |
| 272 | #if defined (SIGFPE) && defined (FPE_FLTRES) |
| 273 | SIGFPE, FPE_FLTRES, "FPE_FLTRES", "Floating point inexact result", |
| 274 | #endif |
| 275 | #if defined (SIGFPE) && defined (FPE_FLTINV) |
| 276 | SIGFPE, FPE_FLTINV, "FPE_FLTINV", "Invalid floating point operation", |
| 277 | #endif |
| 278 | #if defined (SIGFPE) && defined (FPE_FLTSUB) |
| 279 | SIGFPE, FPE_FLTSUB, "FPE_FLTSUB", "Subscript out of range", |
| 280 | #endif |
| 281 | #if defined (SIGSEGV) && defined (SEGV_MAPERR) |
| 282 | SIGSEGV, SEGV_MAPERR, "SEGV_MAPERR", "Address not mapped to object", |
| 283 | #endif |
| 284 | #if defined (SIGSEGV) && defined (SEGV_ACCERR) |
| 285 | SIGSEGV, SEGV_ACCERR, "SEGV_ACCERR", "Invalid permissions for object", |
| 286 | #endif |
| 287 | #if defined (SIGBUS) && defined (BUS_ADRALN) |
| 288 | SIGBUS, BUS_ADRALN, "BUS_ADRALN", "Invalid address alignment", |
| 289 | #endif |
| 290 | #if defined (SIGBUS) && defined (BUS_ADRERR) |
| 291 | SIGBUS, BUS_ADRERR, "BUS_ADRERR", "Non-existent physical address", |
| 292 | #endif |
| 293 | #if defined (SIGBUS) && defined (BUS_OBJERR) |
| 294 | SIGBUS, BUS_OBJERR, "BUS_OBJERR", "Object specific hardware error", |
| 295 | #endif |
| 296 | #if defined (SIGTRAP) && defined (TRAP_BRKPT) |
| 297 | SIGTRAP, TRAP_BRKPT, "TRAP_BRKPT", "Process breakpoint", |
| 298 | #endif |
| 299 | #if defined (SIGTRAP) && defined (TRAP_TRACE) |
| 300 | SIGTRAP, TRAP_TRACE, "TRAP_TRACE", "Process trace trap", |
| 301 | #endif |
| 302 | #if defined (SIGCLD) && defined (CLD_EXITED) |
| 303 | SIGCLD, CLD_EXITED, "CLD_EXITED", "Child has exited", |
| 304 | #endif |
| 305 | #if defined (SIGCLD) && defined (CLD_KILLED) |
| 306 | SIGCLD, CLD_KILLED, "CLD_KILLED", "Child was killed", |
| 307 | #endif |
| 308 | #if defined (SIGCLD) && defined (CLD_DUMPED) |
| 309 | SIGCLD, CLD_DUMPED, "CLD_DUMPED", "Child has terminated abnormally", |
| 310 | #endif |
| 311 | #if defined (SIGCLD) && defined (CLD_TRAPPED) |
| 312 | SIGCLD, CLD_TRAPPED, "CLD_TRAPPED", "Traced child has trapped", |
| 313 | #endif |
| 314 | #if defined (SIGCLD) && defined (CLD_STOPPED) |
| 315 | SIGCLD, CLD_STOPPED, "CLD_STOPPED", "Child has stopped", |
| 316 | #endif |
| 317 | #if defined (SIGCLD) && defined (CLD_CONTINUED) |
| 318 | SIGCLD, CLD_CONTINUED, "CLD_CONTINUED", "Stopped child had continued", |
| 319 | #endif |
| 320 | #if defined (SIGPOLL) && defined (POLL_IN) |
| 321 | SIGPOLL, POLL_IN, "POLL_IN", "Input input available", |
| 322 | #endif |
| 323 | #if defined (SIGPOLL) && defined (POLL_OUT) |
| 324 | SIGPOLL, POLL_OUT, "POLL_OUT", "Output buffers available", |
| 325 | #endif |
| 326 | #if defined (SIGPOLL) && defined (POLL_MSG) |
| 327 | SIGPOLL, POLL_MSG, "POLL_MSG", "Input message available", |
| 328 | #endif |
| 329 | #if defined (SIGPOLL) && defined (POLL_ERR) |
| 330 | SIGPOLL, POLL_ERR, "POLL_ERR", "I/O error", |
| 331 | #endif |
| 332 | #if defined (SIGPOLL) && defined (POLL_PRI) |
| 333 | SIGPOLL, POLL_PRI, "POLL_PRI", "High priority input available", |
| 334 | #endif |
| 335 | #if defined (SIGPOLL) && defined (POLL_HUP) |
| 336 | SIGPOLL, POLL_HUP, "POLL_HUP", "Device disconnected", |
| 337 | #endif |
| 338 | 0, 0, NULL, NULL |
| 339 | }; |
| 340 | |
| 341 | /* Translation table for errno values. See intro(2) in most UNIX systems |
| 342 | Programmers Reference Manuals. |
| 343 | |
| 344 | Note that some systems provide a function (strerror) that returns the |
| 345 | error message string, or a global variable that is the base address of the |
| 346 | array of character pointers. Perhaps we should try to make use of these |
| 347 | provided strings if they are present, but at least this is more portable. |
| 348 | (FIXME?) */ |
| 349 | |
| 350 | static struct trans errno_table[] = |
| 351 | { |
| 352 | #if defined (EPERM) |
| 353 | EPERM, "EPERM", "Not super-user", |
| 354 | #endif |
| 355 | #if defined (ENOENT) |
| 356 | ENOENT, "ENOENT", "No such file or directory", |
| 357 | #endif |
| 358 | #if defined (ESRCH) |
| 359 | ESRCH, "ESRCH", "No such process", |
| 360 | #endif |
| 361 | #if defined (EINTR) |
| 362 | EINTR, "EINTR", "Interrupted system call", |
| 363 | #endif |
| 364 | #if defined (EIO) |
| 365 | EIO, "EIO", "I/O error", |
| 366 | #endif |
| 367 | #if defined (ENXIO) |
| 368 | ENXIO, "ENXIO", "No such device or address", |
| 369 | #endif |
| 370 | #if defined (E2BIG) |
| 371 | E2BIG, "E2BIG", "Arg list too long", |
| 372 | #endif |
| 373 | #if defined (ENOEXEC) |
| 374 | ENOEXEC, "ENOEXEC", "Exec format error", |
| 375 | #endif |
| 376 | #if defined (EBADF) |
| 377 | EBADF, "EBADF", "Bad file number", |
| 378 | #endif |
| 379 | #if defined (ECHILD) |
| 380 | ECHILD, "ECHILD", "No child process", |
| 381 | #endif |
| 382 | #if defined (EAGAIN) |
| 383 | EAGAIN, "EAGAIN", "No more processes", |
| 384 | #endif |
| 385 | #if defined (ENOMEM) |
| 386 | ENOMEM, "ENOMEM", "Not enough space", |
| 387 | #endif |
| 388 | #if defined (EACCES) |
| 389 | EACCES, "EACCES", "Permission denied", |
| 390 | #endif |
| 391 | #if defined (EFAULT) |
| 392 | EFAULT, "EFAULT", "Bad address", |
| 393 | #endif |
| 394 | #if defined (ENOTBLK) |
| 395 | ENOTBLK, "ENOTBLK", "Block device required", |
| 396 | #endif |
| 397 | #if defined (EBUSY) |
| 398 | EBUSY, "EBUSY", "Device busy", |
| 399 | #endif |
| 400 | #if defined (EEXIST) |
| 401 | EEXIST, "EEXIST", "File exists", |
| 402 | #endif |
| 403 | #if defined (EXDEV) |
| 404 | EXDEV, "EXDEV", "Cross-device link", |
| 405 | #endif |
| 406 | #if defined (ENODEV) |
| 407 | ENODEV, "ENODEV", "No such device", |
| 408 | #endif |
| 409 | #if defined (ENOTDIR) |
| 410 | ENOTDIR, "ENOTDIR", "Not a directory", |
| 411 | #endif |
| 412 | #if defined (EISDIR) |
| 413 | EISDIR, "EISDIR", "Is a directory", |
| 414 | #endif |
| 415 | #if defined (EINVAL) |
| 416 | EINVAL, "EINVAL", "Invalid argument", |
| 417 | #endif |
| 418 | #if defined (ENFILE) |
| 419 | ENFILE, "ENFILE", "File table overflow", |
| 420 | #endif |
| 421 | #if defined (EMFILE) |
| 422 | EMFILE, "EMFILE", "Too many open files", |
| 423 | #endif |
| 424 | #if defined (ENOTTY) |
| 425 | ENOTTY, "ENOTTY", "Not a typewriter", |
| 426 | #endif |
| 427 | #if defined (ETXTBSY) |
| 428 | ETXTBSY, "ETXTBSY", "Text file busy", |
| 429 | #endif |
| 430 | #if defined (EFBIG) |
| 431 | EFBIG, "EFBIG", "File too large", |
| 432 | #endif |
| 433 | #if defined (ENOSPC) |
| 434 | ENOSPC, "ENOSPC", "No space left on device", |
| 435 | #endif |
| 436 | #if defined (ESPIPE) |
| 437 | ESPIPE, "ESPIPE", "Illegal seek", |
| 438 | #endif |
| 439 | #if defined (EROFS) |
| 440 | EROFS, "EROFS", "Read only file system", |
| 441 | #endif |
| 442 | #if defined (EMLINK) |
| 443 | EMLINK, "EMLINK", "Too many links", |
| 444 | #endif |
| 445 | #if defined (EPIPE) |
| 446 | EPIPE, "EPIPE", "Broken pipe", |
| 447 | #endif |
| 448 | #if defined (EDOM) |
| 449 | EDOM, "EDOM", "Math argument out of domain of func", |
| 450 | #endif |
| 451 | #if defined (ERANGE) |
| 452 | ERANGE, "ERANGE", "Math result not representable", |
| 453 | #endif |
| 454 | #if defined (ENOMSG) |
| 455 | ENOMSG, "ENOMSG", "No message of desired type", |
| 456 | #endif |
| 457 | #if defined (EIDRM) |
| 458 | EIDRM, "EIDRM", "Identifier removed", |
| 459 | #endif |
| 460 | #if defined (ECHRNG) |
| 461 | ECHRNG, "ECHRNG", "Channel number out of range", |
| 462 | #endif |
| 463 | #if defined (EL2NSYNC) |
| 464 | EL2NSYNC, "EL2NSYNC", "Level 2 not synchronized", |
| 465 | #endif |
| 466 | #if defined (EL3HLT) |
| 467 | EL3HLT, "EL3HLT", "Level 3 halted", |
| 468 | #endif |
| 469 | #if defined (EL3RST) |
| 470 | EL3RST, "EL3RST", "Level 3 reset", |
| 471 | #endif |
| 472 | #if defined (ELNRNG) |
| 473 | ELNRNG, "ELNRNG", "Link number out of range", |
| 474 | #endif |
| 475 | #if defined (EUNATCH) |
| 476 | EUNATCH, "EUNATCH", "Protocol driver not attached", |
| 477 | #endif |
| 478 | #if defined (ENOCSI) |
| 479 | ENOCSI, "ENOCSI", "No CSI structure available", |
| 480 | #endif |
| 481 | #if defined (EL2HLT) |
| 482 | EL2HLT, "EL2HLT", "Level 2 halted", |
| 483 | #endif |
| 484 | #if defined (EDEADLK) |
| 485 | EDEADLK, "EDEADLK", "Deadlock condition", |
| 486 | #endif |
| 487 | #if defined (ENOLCK) |
| 488 | ENOLCK, "ENOLCK", "No record locks available", |
| 489 | #endif |
| 490 | #if defined (EBADE) |
| 491 | EBADE, "EBADE", "Invalid exchange", |
| 492 | #endif |
| 493 | #if defined (EBADR) |
| 494 | EBADR, "EBADR", "Invalid request descriptor", |
| 495 | #endif |
| 496 | #if defined (EXFULL) |
| 497 | EXFULL, "EXFULL", "Exchange full", |
| 498 | #endif |
| 499 | #if defined (ENOANO) |
| 500 | ENOANO, "ENOANO", "No anode", |
| 501 | #endif |
| 502 | #if defined (EBADRQC) |
| 503 | EBADRQC, "EBADRQC", "Invalid request code", |
| 504 | #endif |
| 505 | #if defined (EBADSLT) |
| 506 | EBADSLT, "EBADSLT", "Invalid slot", |
| 507 | #endif |
| 508 | #if defined (EDEADLOCK) |
| 509 | EDEADLOCK, "EDEADLOCK", "File locking deadlock error", |
| 510 | #endif |
| 511 | #if defined (EBFONT) |
| 512 | EBFONT, "EBFONT", "Bad font file fmt", |
| 513 | #endif |
| 514 | #if defined (ENOSTR) |
| 515 | ENOSTR, "ENOSTR", "Device not a stream", |
| 516 | #endif |
| 517 | #if defined (ENODATA) |
| 518 | ENODATA, "ENODATA", "No data available", |
| 519 | #endif |
| 520 | #if defined (ETIME) |
| 521 | ETIME, "ETIME", "Timer expired", |
| 522 | #endif |
| 523 | #if defined (ENOSR) |
| 524 | ENOSR, "ENOSR", "Out of streams resources", |
| 525 | #endif |
| 526 | #if defined (ENONET) |
| 527 | ENONET, "ENONET", "Machine is not on the network", |
| 528 | #endif |
| 529 | #if defined (ENOPKG) |
| 530 | ENOPKG, "ENOPKG", "Package not installed", |
| 531 | #endif |
| 532 | #if defined (EREMOTE) |
| 533 | EREMOTE, "EREMOTE", "Object is remote", |
| 534 | #endif |
| 535 | #if defined (ENOLINK) |
| 536 | ENOLINK, "ENOLINK", "Link has been severed", |
| 537 | #endif |
| 538 | #if defined (EADV) |
| 539 | EADV, "EADV", "Advertise error", |
| 540 | #endif |
| 541 | #if defined (ESRMNT) |
| 542 | ESRMNT, "ESRMNT", "Srmount error", |
| 543 | #endif |
| 544 | #if defined (ECOMM) |
| 545 | ECOMM, "ECOMM", "Communication error on send", |
| 546 | #endif |
| 547 | #if defined (EPROTO) |
| 548 | EPROTO, "EPROTO", "Protocol error", |
| 549 | #endif |
| 550 | #if defined (EMULTIHOP) |
| 551 | EMULTIHOP, "EMULTIHOP", "Multihop attempted", |
| 552 | #endif |
| 553 | #if defined (EDOTDOT) |
| 554 | EDOTDOT, "EDOTDOT", "RFS specific error", |
| 555 | #endif |
| 556 | #if defined (EBADMSG) |
| 557 | EBADMSG, "EBADMSG", "Not a data message", |
| 558 | #endif |
| 559 | #if defined (ENAMETOOLONG) |
| 560 | ENAMETOOLONG, "ENAMETOOLONG", "File name too long", |
| 561 | #endif |
| 562 | #if defined (EOVERFLOW) |
| 563 | EOVERFLOW, "EOVERFLOW", "Value too large for defined data type", |
| 564 | #endif |
| 565 | #if defined (ENOTUNIQ) |
| 566 | ENOTUNIQ, "ENOTUNIQ", "Name not unique on network", |
| 567 | #endif |
| 568 | #if defined (EBADFD) |
| 569 | EBADFD, "EBADFD", "File descriptor in bad state", |
| 570 | #endif |
| 571 | #if defined (EREMCHG) |
| 572 | EREMCHG, "EREMCHG", "Remote address changed", |
| 573 | #endif |
| 574 | #if defined (ELIBACC) |
| 575 | ELIBACC, "ELIBACC", "Cannot access a needed shared library", |
| 576 | #endif |
| 577 | #if defined (ELIBBAD) |
| 578 | ELIBBAD, "ELIBBAD", "Accessing a corrupted shared library", |
| 579 | #endif |
| 580 | #if defined (ELIBSCN) |
| 581 | ELIBSCN, "ELIBSCN", ".lib section in a.out corrupted", |
| 582 | #endif |
| 583 | #if defined (ELIBMAX) |
| 584 | ELIBMAX, "ELIBMAX", "Attempting to link in too many shared libraries", |
| 585 | #endif |
| 586 | #if defined (ELIBEXEC) |
| 587 | ELIBEXEC, "ELIBEXEC", "Cannot exec a shared library directly", |
| 588 | #endif |
| 589 | #if defined (EILSEQ) |
| 590 | EILSEQ, "EILSEQ", "Illegal byte sequence", |
| 591 | #endif |
| 592 | #if defined (ENOSYS) |
| 593 | ENOSYS, "ENOSYS", "Operation not applicable", |
| 594 | #endif |
| 595 | #if defined (ELOOP) |
| 596 | ELOOP, "ELOOP", "Too many symbolic links encountered", |
| 597 | #endif |
| 598 | #if defined (ERESTART) |
| 599 | ERESTART, "ERESTART", "Interrupted system call should be restarted", |
| 600 | #endif |
| 601 | #if defined (ESTRPIPE) |
| 602 | ESTRPIPE, "ESTRPIPE", "Streams pipe error", |
| 603 | #endif |
| 604 | #if defined (ENOTEMPTY) |
| 605 | ENOTEMPTY, "ENOTEMPTY", "Directory not empty", |
| 606 | #endif |
| 607 | #if defined (EUSERS) |
| 608 | EUSERS, "EUSERS", "Too many users", |
| 609 | #endif |
| 610 | #if defined (ENOTSOCK) |
| 611 | ENOTSOCK, "ENOTSOCK", "Socket operation on non-socket", |
| 612 | #endif |
| 613 | #if defined (EDESTADDRREQ) |
| 614 | EDESTADDRREQ, "EDESTADDRREQ", "Destination address required", |
| 615 | #endif |
| 616 | #if defined (EMSGSIZE) |
| 617 | EMSGSIZE, "EMSGSIZE", "Message too long", |
| 618 | #endif |
| 619 | #if defined (EPROTOTYPE) |
| 620 | EPROTOTYPE, "EPROTOTYPE", "Protocol wrong type for socket", |
| 621 | #endif |
| 622 | #if defined (ENOPROTOOPT) |
| 623 | ENOPROTOOPT, "ENOPROTOOPT", "Protocol not available", |
| 624 | #endif |
| 625 | #if defined (EPROTONOSUPPORT) |
| 626 | EPROTONOSUPPORT, "EPROTONOSUPPORT", "Protocol not supported", |
| 627 | #endif |
| 628 | #if defined (ESOCKTNOSUPPORT) |
| 629 | ESOCKTNOSUPPORT, "ESOCKTNOSUPPORT", "Socket type not supported", |
| 630 | #endif |
| 631 | #if defined (EOPNOTSUPP) |
| 632 | EOPNOTSUPP, "EOPNOTSUPP", "Operation not supported on transport endpoint ", |
| 633 | #endif |
| 634 | #if defined (EPFNOSUPPORT) |
| 635 | EPFNOSUPPORT, "EPFNOSUPPORT", "Protocol family not supported", |
| 636 | #endif |
| 637 | #if defined (EAFNOSUPPORT) |
| 638 | EAFNOSUPPORT, "EAFNOSUPPORT", "Address family not supported by protocol", |
| 639 | #endif |
| 640 | #if defined (EADDRINUSE) |
| 641 | EADDRINUSE, "EADDRINUSE", "Address already in use", |
| 642 | #endif |
| 643 | #if defined (EADDRNOTAVAIL) |
| 644 | EADDRNOTAVAIL, "EADDRNOTAVAIL","Cannot assign requested address", |
| 645 | #endif |
| 646 | #if defined (ENETDOWN) |
| 647 | ENETDOWN, "ENETDOWN", "Network is down", |
| 648 | #endif |
| 649 | #if defined (ENETUNREACH) |
| 650 | ENETUNREACH, "ENETUNREACH", "Network is unreachable", |
| 651 | #endif |
| 652 | #if defined (ENETRESET) |
| 653 | ENETRESET, "ENETRESET", "Network dropped connection because of reset", |
| 654 | #endif |
| 655 | #if defined (ECONNABORTED) |
| 656 | ECONNABORTED, "ECONNABORTED", "Software caused connection abort", |
| 657 | #endif |
| 658 | #if defined (ECONNRESET) |
| 659 | ECONNRESET, "ECONNRESET", "Connection reset by peer", |
| 660 | #endif |
| 661 | #if defined (ENOBUFS) |
| 662 | ENOBUFS, "ENOBUFS", "No buffer space available", |
| 663 | #endif |
| 664 | #if defined (EISCONN) |
| 665 | EISCONN, "EISCONN", "Transport endpoint is already connected", |
| 666 | #endif |
| 667 | #if defined (ENOTCONN) |
| 668 | ENOTCONN, "ENOTCONN", "Transport endpoint is not connected", |
| 669 | #endif |
| 670 | #if defined (ESHUTDOWN) |
| 671 | ESHUTDOWN, "ESHUTDOWN", "Cannot send after transport endpoint shutdown", |
| 672 | #endif |
| 673 | #if defined (ETOOMANYREFS) |
| 674 | ETOOMANYREFS, "ETOOMANYREFS", "Too many references: cannot splice", |
| 675 | #endif |
| 676 | #if defined (ETIMEDOUT) |
| 677 | ETIMEDOUT, "ETIMEDOUT", "Connection timed out", |
| 678 | #endif |
| 679 | #if defined (ECONNREFUSED) |
| 680 | ECONNREFUSED, "ECONNREFUSED", "Connection refused", |
| 681 | #endif |
| 682 | #if defined (EHOSTDOWN) |
| 683 | EHOSTDOWN, "EHOSTDOWN", "Host is down", |
| 684 | #endif |
| 685 | #if defined (EHOSTUNREACH) |
| 686 | EHOSTUNREACH, "EHOSTUNREACH", "No route to host", |
| 687 | #endif |
| 688 | #if defined (EWOULDBLOCK) |
| 689 | EWOULDBLOCK, "EWOULDBLOCK", "Operation already in progress", |
| 690 | #endif |
| 691 | #if defined (EINPROGRESS) |
| 692 | EINPROGRESS, "EINPROGRESS", "Operation now in progress", |
| 693 | #endif |
| 694 | #if defined (ESTALE) |
| 695 | ESTALE, "ESTALE", "Stale NFS file handle", |
| 696 | #endif |
| 697 | #if defined (EUCLEAN) |
| 698 | EUCLEAN, "EUCLEAN", "Structure needs cleaning", |
| 699 | #endif |
| 700 | #if defined (ENOTNAM) |
| 701 | ENOTNAM, "ENOTNAM", "Not a XENIX named type file", |
| 702 | #endif |
| 703 | #if defined (ENAVAIL) |
| 704 | ENAVAIL, "ENAVAIL", "No XENIX semaphores available", |
| 705 | #endif |
| 706 | #if defined (EISNAM) |
| 707 | EISNAM, "EISNAM", "Is a named type file", |
| 708 | #endif |
| 709 | #if defined (EREMOTEIO) |
| 710 | EREMOTEIO, "EREMOTEIO", "Remote I/O error", |
| 711 | #endif |
| 712 | 0, NULL, NULL |
| 713 | }; |
| 714 | |
| 715 | static char *syscall_table[MAX_SYSCALLS]; |
| 716 | |
| 717 | /* Prototypes for local functions */ |
| 718 | |
| 719 | static void |
| 720 | set_proc_siginfo PARAMS ((struct procinfo *, int)); |
| 721 | |
| 722 | static void |
| 723 | init_syscall_table PARAMS ((void)); |
| 724 | |
| 725 | static char * |
| 726 | syscallname PARAMS ((int)); |
| 727 | |
| 728 | static char * |
| 729 | signalname PARAMS ((int)); |
| 730 | |
| 731 | static int |
| 732 | proc_address_to_fd PARAMS ((CORE_ADDR, int)); |
| 733 | |
| 734 | static int |
| 735 | open_proc_file PARAMS ((int, struct procinfo *)); |
| 736 | |
| 737 | static void |
| 738 | close_proc_file PARAMS ((struct procinfo *)); |
| 739 | |
| 740 | static void |
| 741 | unconditionally_kill_inferior PARAMS ((void)); |
| 742 | |
| 743 | static void |
| 744 | proc_init_failed PARAMS ((char *)); |
| 745 | |
| 746 | static void |
| 747 | info_proc PARAMS ((char *, int)); |
| 748 | |
| 749 | static void |
| 750 | info_proc_flags PARAMS ((struct procinfo *, int)); |
| 751 | |
| 752 | static void |
| 753 | info_proc_stop PARAMS ((struct procinfo *, int)); |
| 754 | |
| 755 | static void |
| 756 | info_proc_siginfo PARAMS ((struct procinfo *, int)); |
| 757 | |
| 758 | static void |
| 759 | info_proc_syscalls PARAMS ((struct procinfo *, int)); |
| 760 | |
| 761 | static void |
| 762 | info_proc_mappings PARAMS ((struct procinfo *, int)); |
| 763 | |
| 764 | static void |
| 765 | info_proc_signals PARAMS ((struct procinfo *, int)); |
| 766 | |
| 767 | static void |
| 768 | info_proc_faults PARAMS ((struct procinfo *, int)); |
| 769 | |
| 770 | static char * |
| 771 | mappingflags PARAMS ((long)); |
| 772 | |
| 773 | static char * |
| 774 | lookupname PARAMS ((struct trans *, unsigned int, char *)); |
| 775 | |
| 776 | static char * |
| 777 | lookupdesc PARAMS ((struct trans *, unsigned int)); |
| 778 | |
| 779 | /* External function prototypes that can't be easily included in any |
| 780 | header file because the args are typedefs in system include files. */ |
| 781 | |
| 782 | extern void |
| 783 | supply_gregset PARAMS ((gregset_t *)); |
| 784 | |
| 785 | extern void |
| 786 | fill_gregset PARAMS ((gregset_t *, int)); |
| 787 | |
| 788 | extern void |
| 789 | supply_fpregset PARAMS ((fpregset_t *)); |
| 790 | |
| 791 | extern void |
| 792 | fill_fpregset PARAMS ((fpregset_t *, int)); |
| 793 | |
| 794 | /* |
| 795 | |
| 796 | LOCAL FUNCTION |
| 797 | |
| 798 | lookupdesc -- translate a value to a summary desc string |
| 799 | |
| 800 | SYNOPSIS |
| 801 | |
| 802 | static char *lookupdesc (struct trans *transp, unsigned int val); |
| 803 | |
| 804 | DESCRIPTION |
| 805 | |
| 806 | Given a pointer to a translation table and a value to be translated, |
| 807 | lookup the desc string and return it. |
| 808 | */ |
| 809 | |
| 810 | static char * |
| 811 | lookupdesc (transp, val) |
| 812 | struct trans *transp; |
| 813 | unsigned int val; |
| 814 | { |
| 815 | char *desc; |
| 816 | |
| 817 | for (desc = NULL; transp -> name != NULL; transp++) |
| 818 | { |
| 819 | if (transp -> value == val) |
| 820 | { |
| 821 | desc = transp -> desc; |
| 822 | break; |
| 823 | } |
| 824 | } |
| 825 | |
| 826 | /* Didn't find a translation for the specified value, set a default one. */ |
| 827 | |
| 828 | if (desc == NULL) |
| 829 | { |
| 830 | desc = "Unknown"; |
| 831 | } |
| 832 | return (desc); |
| 833 | } |
| 834 | |
| 835 | /* |
| 836 | |
| 837 | LOCAL FUNCTION |
| 838 | |
| 839 | lookupname -- translate a value to symbolic name |
| 840 | |
| 841 | SYNOPSIS |
| 842 | |
| 843 | static char *lookupname (struct trans *transp, unsigned int val, |
| 844 | char *prefix); |
| 845 | |
| 846 | DESCRIPTION |
| 847 | |
| 848 | Given a pointer to a translation table, a value to be translated, |
| 849 | and a default prefix to return if the value can't be translated, |
| 850 | match the value with one of the translation table entries and |
| 851 | return a pointer to the symbolic name. |
| 852 | |
| 853 | If no match is found it just returns the value as a printable string, |
| 854 | with the given prefix. The previous such value, if any, is freed |
| 855 | at this time. |
| 856 | */ |
| 857 | |
| 858 | static char * |
| 859 | lookupname (transp, val, prefix) |
| 860 | struct trans *transp; |
| 861 | unsigned int val; |
| 862 | char *prefix; |
| 863 | { |
| 864 | static char *locbuf; |
| 865 | char *name; |
| 866 | |
| 867 | for (name = NULL; transp -> name != NULL; transp++) |
| 868 | { |
| 869 | if (transp -> value == val) |
| 870 | { |
| 871 | name = transp -> name; |
| 872 | break; |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | /* Didn't find a translation for the specified value, build a default |
| 877 | one using the specified prefix and return it. The lifetime of |
| 878 | the value is only until the next one is needed. */ |
| 879 | |
| 880 | if (name == NULL) |
| 881 | { |
| 882 | if (locbuf != NULL) |
| 883 | { |
| 884 | free (locbuf); |
| 885 | } |
| 886 | locbuf = xmalloc (strlen (prefix) + 16); |
| 887 | (void) sprintf (locbuf, "%s %u", prefix, val); |
| 888 | name = locbuf; |
| 889 | } |
| 890 | return (name); |
| 891 | } |
| 892 | |
| 893 | static char * |
| 894 | sigcodename (sip) |
| 895 | siginfo_t *sip; |
| 896 | { |
| 897 | struct sigcode *scp; |
| 898 | char *name = NULL; |
| 899 | static char locbuf[32]; |
| 900 | |
| 901 | for (scp = siginfo_table; scp -> codename != NULL; scp++) |
| 902 | { |
| 903 | if ((scp -> signo == sip -> si_signo) && |
| 904 | (scp -> code == sip -> si_code)) |
| 905 | { |
| 906 | name = scp -> codename; |
| 907 | break; |
| 908 | } |
| 909 | } |
| 910 | if (name == NULL) |
| 911 | { |
| 912 | (void) sprintf (locbuf, "sigcode %u", sip -> si_signo); |
| 913 | name = locbuf; |
| 914 | } |
| 915 | return (name); |
| 916 | } |
| 917 | |
| 918 | static char *sigcodedesc (sip) |
| 919 | siginfo_t *sip; |
| 920 | { |
| 921 | struct sigcode *scp; |
| 922 | char *desc = NULL; |
| 923 | |
| 924 | for (scp = siginfo_table; scp -> codename != NULL; scp++) |
| 925 | { |
| 926 | if ((scp -> signo == sip -> si_signo) && |
| 927 | (scp -> code == sip -> si_code)) |
| 928 | { |
| 929 | desc = scp -> desc; |
| 930 | break; |
| 931 | } |
| 932 | } |
| 933 | if (desc == NULL) |
| 934 | { |
| 935 | desc = "Unrecognized signal or trap use"; |
| 936 | } |
| 937 | return (desc); |
| 938 | } |
| 939 | |
| 940 | /* |
| 941 | |
| 942 | LOCAL FUNCTION |
| 943 | |
| 944 | syscallname - translate a system call number into a system call name |
| 945 | |
| 946 | SYNOPSIS |
| 947 | |
| 948 | char *syscallname (int syscallnum) |
| 949 | |
| 950 | DESCRIPTION |
| 951 | |
| 952 | Given a system call number, translate it into the printable name |
| 953 | of a system call, or into "syscall <num>" if it is an unknown |
| 954 | number. |
| 955 | */ |
| 956 | |
| 957 | static char * |
| 958 | syscallname (syscallnum) |
| 959 | int syscallnum; |
| 960 | { |
| 961 | static char locbuf[32]; |
| 962 | char *rtnval; |
| 963 | |
| 964 | if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS) |
| 965 | { |
| 966 | rtnval = syscall_table[syscallnum]; |
| 967 | } |
| 968 | else |
| 969 | { |
| 970 | (void) sprintf (locbuf, "syscall %u", syscallnum); |
| 971 | rtnval = locbuf; |
| 972 | } |
| 973 | return (rtnval); |
| 974 | } |
| 975 | |
| 976 | /* |
| 977 | |
| 978 | LOCAL FUNCTION |
| 979 | |
| 980 | init_syscall_table - initialize syscall translation table |
| 981 | |
| 982 | SYNOPSIS |
| 983 | |
| 984 | void init_syscall_table (void) |
| 985 | |
| 986 | DESCRIPTION |
| 987 | |
| 988 | Dynamically initialize the translation table to convert system |
| 989 | call numbers into printable system call names. Done once per |
| 990 | gdb run, on initialization. |
| 991 | |
| 992 | NOTES |
| 993 | |
| 994 | This is awfully ugly, but preprocessor tricks to make it prettier |
| 995 | tend to be nonportable. |
| 996 | */ |
| 997 | |
| 998 | static void |
| 999 | init_syscall_table () |
| 1000 | { |
| 1001 | int syscallnum; |
| 1002 | |
| 1003 | #if defined (SYS_exit) |
| 1004 | syscall_table[SYS_exit] = "exit"; |
| 1005 | #endif |
| 1006 | #if defined (SYS_fork) |
| 1007 | syscall_table[SYS_fork] = "fork"; |
| 1008 | #endif |
| 1009 | #if defined (SYS_read) |
| 1010 | syscall_table[SYS_read] = "read"; |
| 1011 | #endif |
| 1012 | #if defined (SYS_write) |
| 1013 | syscall_table[SYS_write] = "write"; |
| 1014 | #endif |
| 1015 | #if defined (SYS_open) |
| 1016 | syscall_table[SYS_open] = "open"; |
| 1017 | #endif |
| 1018 | #if defined (SYS_close) |
| 1019 | syscall_table[SYS_close] = "close"; |
| 1020 | #endif |
| 1021 | #if defined (SYS_wait) |
| 1022 | syscall_table[SYS_wait] = "wait"; |
| 1023 | #endif |
| 1024 | #if defined (SYS_creat) |
| 1025 | syscall_table[SYS_creat] = "creat"; |
| 1026 | #endif |
| 1027 | #if defined (SYS_link) |
| 1028 | syscall_table[SYS_link] = "link"; |
| 1029 | #endif |
| 1030 | #if defined (SYS_unlink) |
| 1031 | syscall_table[SYS_unlink] = "unlink"; |
| 1032 | #endif |
| 1033 | #if defined (SYS_exec) |
| 1034 | syscall_table[SYS_exec] = "exec"; |
| 1035 | #endif |
| 1036 | #if defined (SYS_execv) |
| 1037 | syscall_table[SYS_execv] = "execv"; |
| 1038 | #endif |
| 1039 | #if defined (SYS_execve) |
| 1040 | syscall_table[SYS_execve] = "execve"; |
| 1041 | #endif |
| 1042 | #if defined (SYS_chdir) |
| 1043 | syscall_table[SYS_chdir] = "chdir"; |
| 1044 | #endif |
| 1045 | #if defined (SYS_time) |
| 1046 | syscall_table[SYS_time] = "time"; |
| 1047 | #endif |
| 1048 | #if defined (SYS_mknod) |
| 1049 | syscall_table[SYS_mknod] = "mknod"; |
| 1050 | #endif |
| 1051 | #if defined (SYS_chmod) |
| 1052 | syscall_table[SYS_chmod] = "chmod"; |
| 1053 | #endif |
| 1054 | #if defined (SYS_chown) |
| 1055 | syscall_table[SYS_chown] = "chown"; |
| 1056 | #endif |
| 1057 | #if defined (SYS_brk) |
| 1058 | syscall_table[SYS_brk] = "brk"; |
| 1059 | #endif |
| 1060 | #if defined (SYS_stat) |
| 1061 | syscall_table[SYS_stat] = "stat"; |
| 1062 | #endif |
| 1063 | #if defined (SYS_lseek) |
| 1064 | syscall_table[SYS_lseek] = "lseek"; |
| 1065 | #endif |
| 1066 | #if defined (SYS_getpid) |
| 1067 | syscall_table[SYS_getpid] = "getpid"; |
| 1068 | #endif |
| 1069 | #if defined (SYS_mount) |
| 1070 | syscall_table[SYS_mount] = "mount"; |
| 1071 | #endif |
| 1072 | #if defined (SYS_umount) |
| 1073 | syscall_table[SYS_umount] = "umount"; |
| 1074 | #endif |
| 1075 | #if defined (SYS_setuid) |
| 1076 | syscall_table[SYS_setuid] = "setuid"; |
| 1077 | #endif |
| 1078 | #if defined (SYS_getuid) |
| 1079 | syscall_table[SYS_getuid] = "getuid"; |
| 1080 | #endif |
| 1081 | #if defined (SYS_stime) |
| 1082 | syscall_table[SYS_stime] = "stime"; |
| 1083 | #endif |
| 1084 | #if defined (SYS_ptrace) |
| 1085 | syscall_table[SYS_ptrace] = "ptrace"; |
| 1086 | #endif |
| 1087 | #if defined (SYS_alarm) |
| 1088 | syscall_table[SYS_alarm] = "alarm"; |
| 1089 | #endif |
| 1090 | #if defined (SYS_fstat) |
| 1091 | syscall_table[SYS_fstat] = "fstat"; |
| 1092 | #endif |
| 1093 | #if defined (SYS_pause) |
| 1094 | syscall_table[SYS_pause] = "pause"; |
| 1095 | #endif |
| 1096 | #if defined (SYS_utime) |
| 1097 | syscall_table[SYS_utime] = "utime"; |
| 1098 | #endif |
| 1099 | #if defined (SYS_stty) |
| 1100 | syscall_table[SYS_stty] = "stty"; |
| 1101 | #endif |
| 1102 | #if defined (SYS_gtty) |
| 1103 | syscall_table[SYS_gtty] = "gtty"; |
| 1104 | #endif |
| 1105 | #if defined (SYS_access) |
| 1106 | syscall_table[SYS_access] = "access"; |
| 1107 | #endif |
| 1108 | #if defined (SYS_nice) |
| 1109 | syscall_table[SYS_nice] = "nice"; |
| 1110 | #endif |
| 1111 | #if defined (SYS_statfs) |
| 1112 | syscall_table[SYS_statfs] = "statfs"; |
| 1113 | #endif |
| 1114 | #if defined (SYS_sync) |
| 1115 | syscall_table[SYS_sync] = "sync"; |
| 1116 | #endif |
| 1117 | #if defined (SYS_kill) |
| 1118 | syscall_table[SYS_kill] = "kill"; |
| 1119 | #endif |
| 1120 | #if defined (SYS_fstatfs) |
| 1121 | syscall_table[SYS_fstatfs] = "fstatfs"; |
| 1122 | #endif |
| 1123 | #if defined (SYS_pgrpsys) |
| 1124 | syscall_table[SYS_pgrpsys] = "pgrpsys"; |
| 1125 | #endif |
| 1126 | #if defined (SYS_xenix) |
| 1127 | syscall_table[SYS_xenix] = "xenix"; |
| 1128 | #endif |
| 1129 | #if defined (SYS_dup) |
| 1130 | syscall_table[SYS_dup] = "dup"; |
| 1131 | #endif |
| 1132 | #if defined (SYS_pipe) |
| 1133 | syscall_table[SYS_pipe] = "pipe"; |
| 1134 | #endif |
| 1135 | #if defined (SYS_times) |
| 1136 | syscall_table[SYS_times] = "times"; |
| 1137 | #endif |
| 1138 | #if defined (SYS_profil) |
| 1139 | syscall_table[SYS_profil] = "profil"; |
| 1140 | #endif |
| 1141 | #if defined (SYS_plock) |
| 1142 | syscall_table[SYS_plock] = "plock"; |
| 1143 | #endif |
| 1144 | #if defined (SYS_setgid) |
| 1145 | syscall_table[SYS_setgid] = "setgid"; |
| 1146 | #endif |
| 1147 | #if defined (SYS_getgid) |
| 1148 | syscall_table[SYS_getgid] = "getgid"; |
| 1149 | #endif |
| 1150 | #if defined (SYS_signal) |
| 1151 | syscall_table[SYS_signal] = "signal"; |
| 1152 | #endif |
| 1153 | #if defined (SYS_msgsys) |
| 1154 | syscall_table[SYS_msgsys] = "msgsys"; |
| 1155 | #endif |
| 1156 | #if defined (SYS_sys3b) |
| 1157 | syscall_table[SYS_sys3b] = "sys3b"; |
| 1158 | #endif |
| 1159 | #if defined (SYS_acct) |
| 1160 | syscall_table[SYS_acct] = "acct"; |
| 1161 | #endif |
| 1162 | #if defined (SYS_shmsys) |
| 1163 | syscall_table[SYS_shmsys] = "shmsys"; |
| 1164 | #endif |
| 1165 | #if defined (SYS_semsys) |
| 1166 | syscall_table[SYS_semsys] = "semsys"; |
| 1167 | #endif |
| 1168 | #if defined (SYS_ioctl) |
| 1169 | syscall_table[SYS_ioctl] = "ioctl"; |
| 1170 | #endif |
| 1171 | #if defined (SYS_uadmin) |
| 1172 | syscall_table[SYS_uadmin] = "uadmin"; |
| 1173 | #endif |
| 1174 | #if defined (SYS_utssys) |
| 1175 | syscall_table[SYS_utssys] = "utssys"; |
| 1176 | #endif |
| 1177 | #if defined (SYS_fsync) |
| 1178 | syscall_table[SYS_fsync] = "fsync"; |
| 1179 | #endif |
| 1180 | #if defined (SYS_umask) |
| 1181 | syscall_table[SYS_umask] = "umask"; |
| 1182 | #endif |
| 1183 | #if defined (SYS_chroot) |
| 1184 | syscall_table[SYS_chroot] = "chroot"; |
| 1185 | #endif |
| 1186 | #if defined (SYS_fcntl) |
| 1187 | syscall_table[SYS_fcntl] = "fcntl"; |
| 1188 | #endif |
| 1189 | #if defined (SYS_ulimit) |
| 1190 | syscall_table[SYS_ulimit] = "ulimit"; |
| 1191 | #endif |
| 1192 | #if defined (SYS_rfsys) |
| 1193 | syscall_table[SYS_rfsys] = "rfsys"; |
| 1194 | #endif |
| 1195 | #if defined (SYS_rmdir) |
| 1196 | syscall_table[SYS_rmdir] = "rmdir"; |
| 1197 | #endif |
| 1198 | #if defined (SYS_mkdir) |
| 1199 | syscall_table[SYS_mkdir] = "mkdir"; |
| 1200 | #endif |
| 1201 | #if defined (SYS_getdents) |
| 1202 | syscall_table[SYS_getdents] = "getdents"; |
| 1203 | #endif |
| 1204 | #if defined (SYS_sysfs) |
| 1205 | syscall_table[SYS_sysfs] = "sysfs"; |
| 1206 | #endif |
| 1207 | #if defined (SYS_getmsg) |
| 1208 | syscall_table[SYS_getmsg] = "getmsg"; |
| 1209 | #endif |
| 1210 | #if defined (SYS_putmsg) |
| 1211 | syscall_table[SYS_putmsg] = "putmsg"; |
| 1212 | #endif |
| 1213 | #if defined (SYS_poll) |
| 1214 | syscall_table[SYS_poll] = "poll"; |
| 1215 | #endif |
| 1216 | #if defined (SYS_lstat) |
| 1217 | syscall_table[SYS_lstat] = "lstat"; |
| 1218 | #endif |
| 1219 | #if defined (SYS_symlink) |
| 1220 | syscall_table[SYS_symlink] = "symlink"; |
| 1221 | #endif |
| 1222 | #if defined (SYS_readlink) |
| 1223 | syscall_table[SYS_readlink] = "readlink"; |
| 1224 | #endif |
| 1225 | #if defined (SYS_setgroups) |
| 1226 | syscall_table[SYS_setgroups] = "setgroups"; |
| 1227 | #endif |
| 1228 | #if defined (SYS_getgroups) |
| 1229 | syscall_table[SYS_getgroups] = "getgroups"; |
| 1230 | #endif |
| 1231 | #if defined (SYS_fchmod) |
| 1232 | syscall_table[SYS_fchmod] = "fchmod"; |
| 1233 | #endif |
| 1234 | #if defined (SYS_fchown) |
| 1235 | syscall_table[SYS_fchown] = "fchown"; |
| 1236 | #endif |
| 1237 | #if defined (SYS_sigprocmask) |
| 1238 | syscall_table[SYS_sigprocmask] = "sigprocmask"; |
| 1239 | #endif |
| 1240 | #if defined (SYS_sigsuspend) |
| 1241 | syscall_table[SYS_sigsuspend] = "sigsuspend"; |
| 1242 | #endif |
| 1243 | #if defined (SYS_sigaltstack) |
| 1244 | syscall_table[SYS_sigaltstack] = "sigaltstack"; |
| 1245 | #endif |
| 1246 | #if defined (SYS_sigaction) |
| 1247 | syscall_table[SYS_sigaction] = "sigaction"; |
| 1248 | #endif |
| 1249 | #if defined (SYS_sigpending) |
| 1250 | syscall_table[SYS_sigpending] = "sigpending"; |
| 1251 | #endif |
| 1252 | #if defined (SYS_context) |
| 1253 | syscall_table[SYS_context] = "context"; |
| 1254 | #endif |
| 1255 | #if defined (SYS_evsys) |
| 1256 | syscall_table[SYS_evsys] = "evsys"; |
| 1257 | #endif |
| 1258 | #if defined (SYS_evtrapret) |
| 1259 | syscall_table[SYS_evtrapret] = "evtrapret"; |
| 1260 | #endif |
| 1261 | #if defined (SYS_statvfs) |
| 1262 | syscall_table[SYS_statvfs] = "statvfs"; |
| 1263 | #endif |
| 1264 | #if defined (SYS_fstatvfs) |
| 1265 | syscall_table[SYS_fstatvfs] = "fstatvfs"; |
| 1266 | #endif |
| 1267 | #if defined (SYS_nfssys) |
| 1268 | syscall_table[SYS_nfssys] = "nfssys"; |
| 1269 | #endif |
| 1270 | #if defined (SYS_waitsys) |
| 1271 | syscall_table[SYS_waitsys] = "waitsys"; |
| 1272 | #endif |
| 1273 | #if defined (SYS_sigsendsys) |
| 1274 | syscall_table[SYS_sigsendsys] = "sigsendsys"; |
| 1275 | #endif |
| 1276 | #if defined (SYS_hrtsys) |
| 1277 | syscall_table[SYS_hrtsys] = "hrtsys"; |
| 1278 | #endif |
| 1279 | #if defined (SYS_acancel) |
| 1280 | syscall_table[SYS_acancel] = "acancel"; |
| 1281 | #endif |
| 1282 | #if defined (SYS_async) |
| 1283 | syscall_table[SYS_async] = "async"; |
| 1284 | #endif |
| 1285 | #if defined (SYS_priocntlsys) |
| 1286 | syscall_table[SYS_priocntlsys] = "priocntlsys"; |
| 1287 | #endif |
| 1288 | #if defined (SYS_pathconf) |
| 1289 | syscall_table[SYS_pathconf] = "pathconf"; |
| 1290 | #endif |
| 1291 | #if defined (SYS_mincore) |
| 1292 | syscall_table[SYS_mincore] = "mincore"; |
| 1293 | #endif |
| 1294 | #if defined (SYS_mmap) |
| 1295 | syscall_table[SYS_mmap] = "mmap"; |
| 1296 | #endif |
| 1297 | #if defined (SYS_mprotect) |
| 1298 | syscall_table[SYS_mprotect] = "mprotect"; |
| 1299 | #endif |
| 1300 | #if defined (SYS_munmap) |
| 1301 | syscall_table[SYS_munmap] = "munmap"; |
| 1302 | #endif |
| 1303 | #if defined (SYS_fpathconf) |
| 1304 | syscall_table[SYS_fpathconf] = "fpathconf"; |
| 1305 | #endif |
| 1306 | #if defined (SYS_vfork) |
| 1307 | syscall_table[SYS_vfork] = "vfork"; |
| 1308 | #endif |
| 1309 | #if defined (SYS_fchdir) |
| 1310 | syscall_table[SYS_fchdir] = "fchdir"; |
| 1311 | #endif |
| 1312 | #if defined (SYS_readv) |
| 1313 | syscall_table[SYS_readv] = "readv"; |
| 1314 | #endif |
| 1315 | #if defined (SYS_writev) |
| 1316 | syscall_table[SYS_writev] = "writev"; |
| 1317 | #endif |
| 1318 | #if defined (SYS_xstat) |
| 1319 | syscall_table[SYS_xstat] = "xstat"; |
| 1320 | #endif |
| 1321 | #if defined (SYS_lxstat) |
| 1322 | syscall_table[SYS_lxstat] = "lxstat"; |
| 1323 | #endif |
| 1324 | #if defined (SYS_fxstat) |
| 1325 | syscall_table[SYS_fxstat] = "fxstat"; |
| 1326 | #endif |
| 1327 | #if defined (SYS_xmknod) |
| 1328 | syscall_table[SYS_xmknod] = "xmknod"; |
| 1329 | #endif |
| 1330 | #if defined (SYS_clocal) |
| 1331 | syscall_table[SYS_clocal] = "clocal"; |
| 1332 | #endif |
| 1333 | #if defined (SYS_setrlimit) |
| 1334 | syscall_table[SYS_setrlimit] = "setrlimit"; |
| 1335 | #endif |
| 1336 | #if defined (SYS_getrlimit) |
| 1337 | syscall_table[SYS_getrlimit] = "getrlimit"; |
| 1338 | #endif |
| 1339 | #if defined (SYS_lchown) |
| 1340 | syscall_table[SYS_lchown] = "lchown"; |
| 1341 | #endif |
| 1342 | #if defined (SYS_memcntl) |
| 1343 | syscall_table[SYS_memcntl] = "memcntl"; |
| 1344 | #endif |
| 1345 | #if defined (SYS_getpmsg) |
| 1346 | syscall_table[SYS_getpmsg] = "getpmsg"; |
| 1347 | #endif |
| 1348 | #if defined (SYS_putpmsg) |
| 1349 | syscall_table[SYS_putpmsg] = "putpmsg"; |
| 1350 | #endif |
| 1351 | #if defined (SYS_rename) |
| 1352 | syscall_table[SYS_rename] = "rename"; |
| 1353 | #endif |
| 1354 | #if defined (SYS_uname) |
| 1355 | syscall_table[SYS_uname] = "uname"; |
| 1356 | #endif |
| 1357 | #if defined (SYS_setegid) |
| 1358 | syscall_table[SYS_setegid] = "setegid"; |
| 1359 | #endif |
| 1360 | #if defined (SYS_sysconfig) |
| 1361 | syscall_table[SYS_sysconfig] = "sysconfig"; |
| 1362 | #endif |
| 1363 | #if defined (SYS_adjtime) |
| 1364 | syscall_table[SYS_adjtime] = "adjtime"; |
| 1365 | #endif |
| 1366 | #if defined (SYS_systeminfo) |
| 1367 | syscall_table[SYS_systeminfo] = "systeminfo"; |
| 1368 | #endif |
| 1369 | #if defined (SYS_seteuid) |
| 1370 | syscall_table[SYS_seteuid] = "seteuid"; |
| 1371 | #endif |
| 1372 | } |
| 1373 | |
| 1374 | /* |
| 1375 | |
| 1376 | GLOBAL FUNCTION |
| 1377 | |
| 1378 | ptrace -- override library version to force errors for /proc version |
| 1379 | |
| 1380 | SYNOPSIS |
| 1381 | |
| 1382 | int ptrace (int request, int pid, int arg3, int arg4) |
| 1383 | |
| 1384 | DESCRIPTION |
| 1385 | |
| 1386 | When gdb is configured to use /proc, it should not be calling |
| 1387 | or otherwise attempting to use ptrace. In order to catch errors |
| 1388 | where use of /proc is configured, but some routine is still calling |
| 1389 | ptrace, we provide a local version of a function with that name |
| 1390 | that does nothing but issue an error message. |
| 1391 | */ |
| 1392 | |
| 1393 | int |
| 1394 | ptrace (request, pid, arg3, arg4) |
| 1395 | int request; |
| 1396 | int pid; |
| 1397 | int arg3; |
| 1398 | int arg4; |
| 1399 | { |
| 1400 | error ("internal error - there is a call to ptrace() somewhere"); |
| 1401 | /*NOTREACHED*/ |
| 1402 | } |
| 1403 | |
| 1404 | /* |
| 1405 | |
| 1406 | GLOBAL FUNCTION |
| 1407 | |
| 1408 | kill_inferior_fast -- kill inferior while gdb is exiting |
| 1409 | |
| 1410 | SYNOPSIS |
| 1411 | |
| 1412 | void kill_inferior_fast (void) |
| 1413 | |
| 1414 | DESCRIPTION |
| 1415 | |
| 1416 | This is used when GDB is exiting. It gives less chance of error. |
| 1417 | |
| 1418 | NOTES |
| 1419 | |
| 1420 | Don't attempt to kill attached inferiors since we may be called |
| 1421 | when gdb is in the process of aborting, and killing the attached |
| 1422 | inferior may be very anti-social. This is particularly true if we |
| 1423 | were attached just so we could use the /proc facilities to get |
| 1424 | detailed information about it's status. |
| 1425 | |
| 1426 | */ |
| 1427 | |
| 1428 | void |
| 1429 | kill_inferior_fast () |
| 1430 | { |
| 1431 | if (inferior_pid != 0 && !attach_flag) |
| 1432 | { |
| 1433 | unconditionally_kill_inferior (); |
| 1434 | } |
| 1435 | } |
| 1436 | |
| 1437 | /* |
| 1438 | |
| 1439 | GLOBAL FUNCTION |
| 1440 | |
| 1441 | kill_inferior - kill any currently inferior |
| 1442 | |
| 1443 | SYNOPSIS |
| 1444 | |
| 1445 | void kill_inferior (void) |
| 1446 | |
| 1447 | DESCRIPTION |
| 1448 | |
| 1449 | Kill any current inferior. |
| 1450 | |
| 1451 | NOTES |
| 1452 | |
| 1453 | Kills even attached inferiors. Presumably the user has already |
| 1454 | been prompted that the inferior is an attached one rather than |
| 1455 | one started by gdb. (FIXME?) |
| 1456 | |
| 1457 | */ |
| 1458 | |
| 1459 | void |
| 1460 | kill_inferior () |
| 1461 | { |
| 1462 | if (inferior_pid != 0) |
| 1463 | { |
| 1464 | unconditionally_kill_inferior (); |
| 1465 | target_mourn_inferior (); |
| 1466 | } |
| 1467 | } |
| 1468 | |
| 1469 | /* |
| 1470 | |
| 1471 | LOCAL FUNCTION |
| 1472 | |
| 1473 | unconditionally_kill_inferior - terminate the inferior |
| 1474 | |
| 1475 | SYNOPSIS |
| 1476 | |
| 1477 | static void unconditionally_kill_inferior (void) |
| 1478 | |
| 1479 | DESCRIPTION |
| 1480 | |
| 1481 | Kill the current inferior. Should not be called until it |
| 1482 | is at least tested that there is an inferior. |
| 1483 | |
| 1484 | NOTE |
| 1485 | |
| 1486 | A possibly useful enhancement would be to first try sending |
| 1487 | the inferior a terminate signal, politely asking it to commit |
| 1488 | suicide, before we murder it. |
| 1489 | |
| 1490 | */ |
| 1491 | |
| 1492 | static void |
| 1493 | unconditionally_kill_inferior () |
| 1494 | { |
| 1495 | int signo; |
| 1496 | |
| 1497 | signo = SIGKILL; |
| 1498 | (void) ioctl (pi.fd, PIOCKILL, &signo); |
| 1499 | close_proc_file (&pi); |
| 1500 | wait ((int *) 0); |
| 1501 | } |
| 1502 | |
| 1503 | /* |
| 1504 | |
| 1505 | GLOBAL FUNCTION |
| 1506 | |
| 1507 | child_xfer_memory -- copy data to or from inferior memory space |
| 1508 | |
| 1509 | SYNOPSIS |
| 1510 | |
| 1511 | int child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, |
| 1512 | int dowrite, struct target_ops target) |
| 1513 | |
| 1514 | DESCRIPTION |
| 1515 | |
| 1516 | Copy LEN bytes to/from inferior's memory starting at MEMADDR |
| 1517 | from/to debugger memory starting at MYADDR. Copy from inferior |
| 1518 | if DOWRITE is zero or to inferior if DOWRITE is nonzero. |
| 1519 | |
| 1520 | Returns the length copied, which is either the LEN argument or |
| 1521 | zero. This xfer function does not do partial moves, since child_ops |
| 1522 | doesn't allow memory operations to cross below us in the target stack |
| 1523 | anyway. |
| 1524 | |
| 1525 | NOTES |
| 1526 | |
| 1527 | The /proc interface makes this an almost trivial task. |
| 1528 | */ |
| 1529 | |
| 1530 | |
| 1531 | int |
| 1532 | child_xfer_memory (memaddr, myaddr, len, dowrite, target) |
| 1533 | CORE_ADDR memaddr; |
| 1534 | char *myaddr; |
| 1535 | int len; |
| 1536 | int dowrite; |
| 1537 | struct target_ops *target; /* ignored */ |
| 1538 | { |
| 1539 | int nbytes = 0; |
| 1540 | |
| 1541 | if (lseek (pi.fd, (off_t) memaddr, 0) == (off_t) memaddr) |
| 1542 | { |
| 1543 | if (dowrite) |
| 1544 | { |
| 1545 | nbytes = write (pi.fd, myaddr, len); |
| 1546 | } |
| 1547 | else |
| 1548 | { |
| 1549 | nbytes = read (pi.fd, myaddr, len); |
| 1550 | } |
| 1551 | if (nbytes < 0) |
| 1552 | { |
| 1553 | nbytes = 0; |
| 1554 | } |
| 1555 | } |
| 1556 | return (nbytes); |
| 1557 | } |
| 1558 | |
| 1559 | /* |
| 1560 | |
| 1561 | GLOBAL FUNCTION |
| 1562 | |
| 1563 | store_inferior_registers -- copy register values back to inferior |
| 1564 | |
| 1565 | SYNOPSIS |
| 1566 | |
| 1567 | void store_inferior_registers (int regno) |
| 1568 | |
| 1569 | DESCRIPTION |
| 1570 | |
| 1571 | Store our current register values back into the inferior. If |
| 1572 | REGNO is -1 then store all the register, otherwise store just |
| 1573 | the value specified by REGNO. |
| 1574 | |
| 1575 | NOTES |
| 1576 | |
| 1577 | If we are storing only a single register, we first have to get all |
| 1578 | the current values from the process, overwrite the desired register |
| 1579 | in the gregset with the one we want from gdb's registers, and then |
| 1580 | send the whole set back to the process. For writing all the |
| 1581 | registers, all we have to do is generate the gregset and send it to |
| 1582 | the process. |
| 1583 | |
| 1584 | Also note that the process has to be stopped on an event of interest |
| 1585 | for this to work, which basically means that it has to have been |
| 1586 | run under the control of one of the other /proc ioctl calls and not |
| 1587 | ptrace. Since we don't use ptrace anyway, we don't worry about this |
| 1588 | fine point, but it is worth noting for future reference. |
| 1589 | |
| 1590 | Gdb is confused about what this function is supposed to return. |
| 1591 | Some versions return a value, others return nothing. Some are |
| 1592 | declared to return a value and actually return nothing. Gdb ignores |
| 1593 | anything returned. (FIXME) |
| 1594 | |
| 1595 | */ |
| 1596 | |
| 1597 | void |
| 1598 | store_inferior_registers (regno) |
| 1599 | int regno; |
| 1600 | { |
| 1601 | if (regno != -1) |
| 1602 | { |
| 1603 | (void) ioctl (pi.fd, PIOCGREG, &pi.gregset); |
| 1604 | } |
| 1605 | fill_gregset (&pi.gregset, regno); |
| 1606 | (void) ioctl (pi.fd, PIOCSREG, &pi.gregset); |
| 1607 | |
| 1608 | #if defined (FP0_REGNUM) |
| 1609 | |
| 1610 | /* Now repeat everything using the floating point register set, if the |
| 1611 | target has floating point hardware. Since we ignore the returned value, |
| 1612 | we'll never know whether it worked or not anyway. */ |
| 1613 | |
| 1614 | if (regno != -1) |
| 1615 | { |
| 1616 | (void) ioctl (pi.fd, PIOCGFPREG, &pi.fpregset); |
| 1617 | } |
| 1618 | fill_fpregset (&pi.fpregset, regno); |
| 1619 | (void) ioctl (pi.fd, PIOCSFPREG, &pi.fpregset); |
| 1620 | |
| 1621 | #endif /* FP0_REGNUM */ |
| 1622 | |
| 1623 | } |
| 1624 | |
| 1625 | /* |
| 1626 | |
| 1627 | GLOBAL FUNCTION |
| 1628 | |
| 1629 | inferior_proc_init - initialize access to a /proc entry |
| 1630 | |
| 1631 | SYNOPSIS |
| 1632 | |
| 1633 | void inferior_proc_init (int pid) |
| 1634 | |
| 1635 | DESCRIPTION |
| 1636 | |
| 1637 | When gdb starts an inferior, this function is called in the parent |
| 1638 | process immediately after the fork. It waits for the child to stop |
| 1639 | on the return from the exec system call (the child itself takes care |
| 1640 | of ensuring that this is set up), then sets up the set of signals |
| 1641 | and faults that are to be traced. |
| 1642 | |
| 1643 | NOTES |
| 1644 | |
| 1645 | If proc_init_failed ever gets called, control returns to the command |
| 1646 | processing loop via the standard error handling code. |
| 1647 | |
| 1648 | */ |
| 1649 | |
| 1650 | void |
| 1651 | inferior_proc_init (pid) |
| 1652 | int pid; |
| 1653 | { |
| 1654 | if (!open_proc_file (pid, &pi)) |
| 1655 | { |
| 1656 | proc_init_failed ("can't open process file"); |
| 1657 | } |
| 1658 | else |
| 1659 | { |
| 1660 | (void) memset ((char *) &pi.prrun, 0, sizeof (pi.prrun)); |
| 1661 | prfillset (&pi.prrun.pr_trace); |
| 1662 | proc_signal_handling_change (); |
| 1663 | prfillset (&pi.prrun.pr_fault); |
| 1664 | prdelset (&pi.prrun.pr_fault, FLTPAGE); |
| 1665 | if (ioctl (pi.fd, PIOCWSTOP, &pi.prstatus) < 0) |
| 1666 | { |
| 1667 | proc_init_failed ("PIOCWSTOP failed"); |
| 1668 | } |
| 1669 | else if (ioctl (pi.fd, PIOCSFAULT, &pi.prrun.pr_fault) < 0) |
| 1670 | { |
| 1671 | proc_init_failed ("PIOCSFAULT failed"); |
| 1672 | } |
| 1673 | } |
| 1674 | } |
| 1675 | |
| 1676 | /* |
| 1677 | |
| 1678 | GLOBAL FUNCTION |
| 1679 | |
| 1680 | proc_signal_handling_change |
| 1681 | |
| 1682 | SYNOPSIS |
| 1683 | |
| 1684 | void proc_signal_handling_change (void); |
| 1685 | |
| 1686 | DESCRIPTION |
| 1687 | |
| 1688 | When the user changes the state of gdb's signal handling via the |
| 1689 | "handle" command, this function gets called to see if any change |
| 1690 | in the /proc interface is required. It is also called internally |
| 1691 | by other /proc interface functions to initialize the state of |
| 1692 | the traced signal set. |
| 1693 | |
| 1694 | One thing it does is that signals for which the state is "nostop", |
| 1695 | "noprint", and "pass", have their trace bits reset in the pr_trace |
| 1696 | field, so that they are no longer traced. This allows them to be |
| 1697 | delivered directly to the inferior without the debugger ever being |
| 1698 | involved. |
| 1699 | */ |
| 1700 | |
| 1701 | void |
| 1702 | proc_signal_handling_change () |
| 1703 | { |
| 1704 | int signo; |
| 1705 | |
| 1706 | if (pi.valid) |
| 1707 | { |
| 1708 | for (signo = 0; signo < NSIG; signo++) |
| 1709 | { |
| 1710 | if (signal_stop_state (signo) == 0 && |
| 1711 | signal_print_state (signo) == 0 && |
| 1712 | signal_pass_state (signo) == 1) |
| 1713 | { |
| 1714 | prdelset (&pi.prrun.pr_trace, signo); |
| 1715 | } |
| 1716 | else |
| 1717 | { |
| 1718 | praddset (&pi.prrun.pr_trace, signo); |
| 1719 | } |
| 1720 | } |
| 1721 | if (ioctl (pi.fd, PIOCSTRACE, &pi.prrun.pr_trace)) |
| 1722 | { |
| 1723 | print_sys_errmsg ("PIOCSTRACE failed", errno); |
| 1724 | } |
| 1725 | } |
| 1726 | } |
| 1727 | |
| 1728 | /* |
| 1729 | |
| 1730 | GLOBAL FUNCTION |
| 1731 | |
| 1732 | proc_set_exec_trap -- arrange for exec'd child to halt at startup |
| 1733 | |
| 1734 | SYNOPSIS |
| 1735 | |
| 1736 | void proc_set_exec_trap (void) |
| 1737 | |
| 1738 | DESCRIPTION |
| 1739 | |
| 1740 | This function is called in the child process when starting up |
| 1741 | an inferior, prior to doing the exec of the actual inferior. |
| 1742 | It sets the child process's exitset to make exit from the exec |
| 1743 | system call an event of interest to stop on, and then simply |
| 1744 | returns. The child does the exec, the system call returns, and |
| 1745 | the child stops at the first instruction, ready for the gdb |
| 1746 | parent process to take control of it. |
| 1747 | |
| 1748 | NOTE |
| 1749 | |
| 1750 | We need to use all local variables since the child may be sharing |
| 1751 | it's data space with the parent, if vfork was used rather than |
| 1752 | fork. |
| 1753 | |
| 1754 | Also note that we want to turn off the inherit-on-fork flag in |
| 1755 | the child process so that any grand-children start with all |
| 1756 | tracing flags cleared. |
| 1757 | */ |
| 1758 | |
| 1759 | void |
| 1760 | proc_set_exec_trap () |
| 1761 | { |
| 1762 | sysset_t exitset; |
| 1763 | auto char procname[32]; |
| 1764 | int fd; |
| 1765 | |
| 1766 | (void) sprintf (procname, PROC_NAME_FMT, getpid ()); |
| 1767 | if ((fd = open (procname, O_RDWR)) < 0) |
| 1768 | { |
| 1769 | perror (procname); |
| 1770 | fflush (stderr); |
| 1771 | _exit (127); |
| 1772 | } |
| 1773 | premptyset (&exitset); |
| 1774 | |
| 1775 | /* GW: Rationale... |
| 1776 | Not all systems with /proc have all the exec* syscalls with the same |
| 1777 | names. On the SGI, for example, there is no SYS_exec, but there |
| 1778 | *is* a SYS_execv. So, we try to account for that. */ |
| 1779 | |
| 1780 | #ifdef SYS_exec |
| 1781 | praddset (&exitset, SYS_exec); |
| 1782 | #endif |
| 1783 | #ifdef SYS_execve |
| 1784 | praddset (&exitset, SYS_execve); |
| 1785 | #endif |
| 1786 | #ifdef SYS_execv |
| 1787 | praddset(&exitset, SYS_execv); |
| 1788 | #endif |
| 1789 | |
| 1790 | if (ioctl (fd, PIOCSEXIT, &exitset) < 0) |
| 1791 | { |
| 1792 | perror (procname); |
| 1793 | fflush (stderr); |
| 1794 | _exit (127); |
| 1795 | } |
| 1796 | |
| 1797 | /* Turn off inherit-on-fork flag so that all grand-children of gdb |
| 1798 | start with tracing flags cleared. */ |
| 1799 | |
| 1800 | #if defined (PIOCRESET) /* New method */ |
| 1801 | { |
| 1802 | long pr_flags; |
| 1803 | pr_flags = PR_FORK; |
| 1804 | (void) ioctl (fd, PIOCRESET, &pr_flags); |
| 1805 | } |
| 1806 | #else |
| 1807 | #if defined (PIOCRFORK) /* Original method */ |
| 1808 | (void) ioctl (fd, PIOCRFORK, NULL); |
| 1809 | #endif |
| 1810 | #endif |
| 1811 | } |
| 1812 | |
| 1813 | /* |
| 1814 | |
| 1815 | GLOBAL FUNCTION |
| 1816 | |
| 1817 | proc_iterate_over_mappings -- call function for every mapped space |
| 1818 | |
| 1819 | SYNOPSIS |
| 1820 | |
| 1821 | int proc_iterate_over_mappings (int (*func)()) |
| 1822 | |
| 1823 | DESCRIPTION |
| 1824 | |
| 1825 | Given a pointer to a function, call that function for every |
| 1826 | mapped address space, passing it an open file descriptor for |
| 1827 | the file corresponding to that mapped address space (if any) |
| 1828 | and the base address of the mapped space. Quit when we hit |
| 1829 | the end of the mappings or the function returns nonzero. |
| 1830 | */ |
| 1831 | |
| 1832 | int |
| 1833 | proc_iterate_over_mappings (func) |
| 1834 | int (*func) PARAMS ((int, CORE_ADDR)); |
| 1835 | { |
| 1836 | int nmap; |
| 1837 | int fd; |
| 1838 | int funcstat = 0; |
| 1839 | struct prmap *prmaps; |
| 1840 | struct prmap *prmap; |
| 1841 | CORE_ADDR baseaddr = 0; |
| 1842 | |
| 1843 | if (pi.valid && (ioctl (pi.fd, PIOCNMAP, &nmap) == 0)) |
| 1844 | { |
| 1845 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
| 1846 | if (ioctl (pi.fd, PIOCMAP, prmaps) == 0) |
| 1847 | { |
| 1848 | for (prmap = prmaps; prmap -> pr_size && funcstat == 0; ++prmap) |
| 1849 | { |
| 1850 | fd = proc_address_to_fd ((CORE_ADDR) prmap -> pr_vaddr, 0); |
| 1851 | funcstat = (*func) (fd, (CORE_ADDR) prmap -> pr_vaddr); |
| 1852 | close (fd); |
| 1853 | } |
| 1854 | } |
| 1855 | } |
| 1856 | return (funcstat); |
| 1857 | } |
| 1858 | |
| 1859 | /* |
| 1860 | |
| 1861 | GLOBAL FUNCTION |
| 1862 | |
| 1863 | proc_base_address -- find base address for segment containing address |
| 1864 | |
| 1865 | SYNOPSIS |
| 1866 | |
| 1867 | CORE_ADDR proc_base_address (CORE_ADDR addr) |
| 1868 | |
| 1869 | DESCRIPTION |
| 1870 | |
| 1871 | Given an address of a location in the inferior, find and return |
| 1872 | the base address of the mapped segment containing that address. |
| 1873 | |
| 1874 | This is used for example, by the shared library support code, |
| 1875 | where we have the pc value for some location in the shared library |
| 1876 | where we are stopped, and need to know the base address of the |
| 1877 | segment containing that address. |
| 1878 | */ |
| 1879 | |
| 1880 | |
| 1881 | #if 0 /* Currently unused */ |
| 1882 | |
| 1883 | CORE_ADDR |
| 1884 | proc_base_address (addr) |
| 1885 | CORE_ADDR addr; |
| 1886 | { |
| 1887 | int nmap; |
| 1888 | struct prmap *prmaps; |
| 1889 | struct prmap *prmap; |
| 1890 | CORE_ADDR baseaddr = 0; |
| 1891 | |
| 1892 | if (pi.valid && (ioctl (pi.fd, PIOCNMAP, &nmap) == 0)) |
| 1893 | { |
| 1894 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
| 1895 | if (ioctl (pi.fd, PIOCMAP, prmaps) == 0) |
| 1896 | { |
| 1897 | for (prmap = prmaps; prmap -> pr_size; ++prmap) |
| 1898 | { |
| 1899 | if ((prmap -> pr_vaddr <= (caddr_t) addr) && |
| 1900 | (prmap -> pr_vaddr + prmap -> pr_size > (caddr_t) addr)) |
| 1901 | { |
| 1902 | baseaddr = (CORE_ADDR) prmap -> pr_vaddr; |
| 1903 | break; |
| 1904 | } |
| 1905 | } |
| 1906 | } |
| 1907 | } |
| 1908 | return (baseaddr); |
| 1909 | } |
| 1910 | |
| 1911 | #endif /* 0 */ |
| 1912 | |
| 1913 | /* |
| 1914 | |
| 1915 | LOCAL FUNCTION |
| 1916 | |
| 1917 | proc_address_to_fd -- return open fd for file mapped to address |
| 1918 | |
| 1919 | SYNOPSIS |
| 1920 | |
| 1921 | int proc_address_to_fd (CORE_ADDR addr, complain) |
| 1922 | |
| 1923 | DESCRIPTION |
| 1924 | |
| 1925 | Given an address in the current inferior's address space, use the |
| 1926 | /proc interface to find an open file descriptor for the file that |
| 1927 | this address was mapped in from. Return -1 if there is no current |
| 1928 | inferior. Print a warning message if there is an inferior but |
| 1929 | the address corresponds to no file (IE a bogus address). |
| 1930 | |
| 1931 | */ |
| 1932 | |
| 1933 | static int |
| 1934 | proc_address_to_fd (addr, complain) |
| 1935 | CORE_ADDR addr; |
| 1936 | int complain; |
| 1937 | { |
| 1938 | int fd = -1; |
| 1939 | |
| 1940 | if (pi.valid) |
| 1941 | { |
| 1942 | if ((fd = ioctl (pi.fd, PIOCOPENM, (caddr_t *) &addr)) < 0) |
| 1943 | { |
| 1944 | if (complain) |
| 1945 | { |
| 1946 | print_sys_errmsg (pi.pathname, errno); |
| 1947 | warning ("can't find mapped file for address 0x%x", addr); |
| 1948 | } |
| 1949 | } |
| 1950 | } |
| 1951 | return (fd); |
| 1952 | } |
| 1953 | |
| 1954 | |
| 1955 | #ifdef ATTACH_DETACH |
| 1956 | |
| 1957 | /* |
| 1958 | |
| 1959 | GLOBAL FUNCTION |
| 1960 | |
| 1961 | attach -- attach to an already existing process |
| 1962 | |
| 1963 | SYNOPSIS |
| 1964 | |
| 1965 | int attach (int pid) |
| 1966 | |
| 1967 | DESCRIPTION |
| 1968 | |
| 1969 | Attach to an already existing process with the specified process |
| 1970 | id. If the process is not already stopped, query whether to |
| 1971 | stop it or not. |
| 1972 | |
| 1973 | NOTES |
| 1974 | |
| 1975 | The option of stopping at attach time is specific to the /proc |
| 1976 | versions of gdb. Versions using ptrace force the attachee |
| 1977 | to stop. |
| 1978 | |
| 1979 | */ |
| 1980 | |
| 1981 | int |
| 1982 | attach (pid) |
| 1983 | int pid; |
| 1984 | { |
| 1985 | if (!open_proc_file (pid, &pi)) |
| 1986 | { |
| 1987 | perror_with_name (pi.pathname); |
| 1988 | /* NOTREACHED */ |
| 1989 | } |
| 1990 | |
| 1991 | /* Get current status of process and if it is not already stopped, |
| 1992 | then stop it. Remember whether or not it was stopped when we first |
| 1993 | examined it. */ |
| 1994 | |
| 1995 | if (ioctl (pi.fd, PIOCSTATUS, &pi.prstatus) < 0) |
| 1996 | { |
| 1997 | print_sys_errmsg (pi.pathname, errno); |
| 1998 | close_proc_file (&pi); |
| 1999 | error ("PIOCSTATUS failed"); |
| 2000 | } |
| 2001 | if (pi.prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
| 2002 | { |
| 2003 | pi.was_stopped = 1; |
| 2004 | } |
| 2005 | else |
| 2006 | { |
| 2007 | pi.was_stopped = 0; |
| 2008 | if (query ("Process is currently running, stop it? ")) |
| 2009 | { |
| 2010 | if (ioctl (pi.fd, PIOCSTOP, &pi.prstatus) < 0) |
| 2011 | { |
| 2012 | print_sys_errmsg (pi.pathname, errno); |
| 2013 | close_proc_file (&pi); |
| 2014 | error ("PIOCSTOP failed"); |
| 2015 | } |
| 2016 | pi.nopass_next_sigstop = 1; |
| 2017 | } |
| 2018 | else |
| 2019 | { |
| 2020 | printf ("Ok, gdb will wait for process %u to stop.\n", pid); |
| 2021 | } |
| 2022 | } |
| 2023 | |
| 2024 | /* Remember some things about the inferior that we will, or might, change |
| 2025 | so that we can restore them when we detach. */ |
| 2026 | |
| 2027 | (void) ioctl (pi.fd, PIOCGTRACE, &pi.saved_trace); |
| 2028 | (void) ioctl (pi.fd, PIOCGHOLD, &pi.saved_sighold); |
| 2029 | (void) ioctl (pi.fd, PIOCGFAULT, &pi.saved_fltset); |
| 2030 | (void) ioctl (pi.fd, PIOCGENTRY, &pi.saved_entryset); |
| 2031 | (void) ioctl (pi.fd, PIOCGEXIT, &pi.saved_exitset); |
| 2032 | |
| 2033 | /* Set up trace and fault sets, as gdb expects them. */ |
| 2034 | |
| 2035 | (void) memset (&pi.prrun, 0, sizeof (pi.prrun)); |
| 2036 | prfillset (&pi.prrun.pr_trace); |
| 2037 | proc_signal_handling_change (); |
| 2038 | prfillset (&pi.prrun.pr_fault); |
| 2039 | prdelset (&pi.prrun.pr_fault, FLTPAGE); |
| 2040 | if (ioctl (pi.fd, PIOCSFAULT, &pi.prrun.pr_fault)) |
| 2041 | { |
| 2042 | print_sys_errmsg ("PIOCSFAULT failed", errno); |
| 2043 | } |
| 2044 | if (ioctl (pi.fd, PIOCSTRACE, &pi.prrun.pr_trace)) |
| 2045 | { |
| 2046 | print_sys_errmsg ("PIOCSTRACE failed", errno); |
| 2047 | } |
| 2048 | attach_flag = 1; |
| 2049 | return (pid); |
| 2050 | } |
| 2051 | |
| 2052 | /* |
| 2053 | |
| 2054 | GLOBAL FUNCTION |
| 2055 | |
| 2056 | detach -- detach from an attached-to process |
| 2057 | |
| 2058 | SYNOPSIS |
| 2059 | |
| 2060 | void detach (int signal) |
| 2061 | |
| 2062 | DESCRIPTION |
| 2063 | |
| 2064 | Detach from the current attachee. |
| 2065 | |
| 2066 | If signal is non-zero, the attachee is started running again and sent |
| 2067 | the specified signal. |
| 2068 | |
| 2069 | If signal is zero and the attachee was not already stopped when we |
| 2070 | attached to it, then we make it runnable again when we detach. |
| 2071 | |
| 2072 | Otherwise, we query whether or not to make the attachee runnable |
| 2073 | again, since we may simply want to leave it in the state it was in |
| 2074 | when we attached. |
| 2075 | |
| 2076 | We report any problems, but do not consider them errors, since we |
| 2077 | MUST detach even if some things don't seem to go right. This may not |
| 2078 | be the ideal situation. (FIXME). |
| 2079 | */ |
| 2080 | |
| 2081 | void |
| 2082 | detach (signal) |
| 2083 | int signal; |
| 2084 | { |
| 2085 | if (signal) |
| 2086 | { |
| 2087 | set_proc_siginfo (&pi, signal); |
| 2088 | } |
| 2089 | if (ioctl (pi.fd, PIOCSEXIT, &pi.saved_exitset) < 0) |
| 2090 | { |
| 2091 | print_sys_errmsg (pi.pathname, errno); |
| 2092 | printf ("PIOCSEXIT failed.\n"); |
| 2093 | } |
| 2094 | if (ioctl (pi.fd, PIOCSENTRY, &pi.saved_entryset) < 0) |
| 2095 | { |
| 2096 | print_sys_errmsg (pi.pathname, errno); |
| 2097 | printf ("PIOCSENTRY failed.\n"); |
| 2098 | } |
| 2099 | if (ioctl (pi.fd, PIOCSTRACE, &pi.saved_trace) < 0) |
| 2100 | { |
| 2101 | print_sys_errmsg (pi.pathname, errno); |
| 2102 | printf ("PIOCSTRACE failed.\n"); |
| 2103 | } |
| 2104 | if (ioctl (pi.fd, PIOCSHOLD, &pi.saved_sighold) < 0) |
| 2105 | { |
| 2106 | print_sys_errmsg (pi.pathname, errno); |
| 2107 | printf ("PIOSCHOLD failed.\n"); |
| 2108 | } |
| 2109 | if (ioctl (pi.fd, PIOCSFAULT, &pi.saved_fltset) < 0) |
| 2110 | { |
| 2111 | print_sys_errmsg (pi.pathname, errno); |
| 2112 | printf ("PIOCSFAULT failed.\n"); |
| 2113 | } |
| 2114 | if (ioctl (pi.fd, PIOCSTATUS, &pi.prstatus) < 0) |
| 2115 | { |
| 2116 | print_sys_errmsg (pi.pathname, errno); |
| 2117 | printf ("PIOCSTATUS failed.\n"); |
| 2118 | } |
| 2119 | else |
| 2120 | { |
| 2121 | if (signal || (pi.prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) |
| 2122 | { |
| 2123 | if (signal || !pi.was_stopped || |
| 2124 | query ("Was stopped when attached, make it runnable again? ")) |
| 2125 | { |
| 2126 | (void) memset (&pi.prrun, 0, sizeof (pi.prrun)); |
| 2127 | pi.prrun.pr_flags = PRCFAULT; |
| 2128 | if (ioctl (pi.fd, PIOCRUN, &pi.prrun)) |
| 2129 | { |
| 2130 | print_sys_errmsg (pi.pathname, errno); |
| 2131 | printf ("PIOCRUN failed.\n"); |
| 2132 | } |
| 2133 | } |
| 2134 | } |
| 2135 | } |
| 2136 | close_proc_file (&pi); |
| 2137 | attach_flag = 0; |
| 2138 | } |
| 2139 | |
| 2140 | #endif /* ATTACH_DETACH */ |
| 2141 | |
| 2142 | /* |
| 2143 | |
| 2144 | GLOBAL FUNCTION |
| 2145 | |
| 2146 | proc_wait -- emulate wait() as much as possible |
| 2147 | |
| 2148 | SYNOPSIS |
| 2149 | |
| 2150 | int proc_wait (int *statloc) |
| 2151 | |
| 2152 | DESCRIPTION |
| 2153 | |
| 2154 | Try to emulate wait() as much as possible. Not sure why we can't |
| 2155 | just use wait(), but it seems to have problems when applied to a |
| 2156 | process being controlled with the /proc interface. |
| 2157 | |
| 2158 | NOTES |
| 2159 | |
| 2160 | We have a race problem here with no obvious solution. We need to let |
| 2161 | the inferior run until it stops on an event of interest, which means |
| 2162 | that we need to use the PIOCWSTOP ioctl. However, we cannot use this |
| 2163 | ioctl if the process is already stopped on something that is not an |
| 2164 | event of interest, or the call will hang indefinitely. Thus we first |
| 2165 | use PIOCSTATUS to see if the process is not stopped. If not, then we |
| 2166 | use PIOCWSTOP. But during the window between the two, if the process |
| 2167 | stops for any reason that is not an event of interest (such as a job |
| 2168 | control signal) then gdb will hang. One possible workaround is to set |
| 2169 | an alarm to wake up every minute of so and check to see if the process |
| 2170 | is still running, and if so, then reissue the PIOCWSTOP. But this is |
| 2171 | a real kludge, so has not been implemented. FIXME: investigate |
| 2172 | alternatives. |
| 2173 | |
| 2174 | FIXME: Investigate why wait() seems to have problems with programs |
| 2175 | being control by /proc routines. |
| 2176 | |
| 2177 | */ |
| 2178 | |
| 2179 | int |
| 2180 | proc_wait (statloc) |
| 2181 | int *statloc; |
| 2182 | { |
| 2183 | short what; |
| 2184 | short why; |
| 2185 | int statval = 0; |
| 2186 | int checkerr = 0; |
| 2187 | int rtnval = -1; |
| 2188 | |
| 2189 | if (ioctl (pi.fd, PIOCSTATUS, &pi.prstatus) < 0) |
| 2190 | { |
| 2191 | checkerr++; |
| 2192 | } |
| 2193 | else if (!(pi.prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))) |
| 2194 | { |
| 2195 | if (ioctl (pi.fd, PIOCWSTOP, &pi.prstatus) < 0) |
| 2196 | { |
| 2197 | checkerr++; |
| 2198 | } |
| 2199 | } |
| 2200 | if (checkerr) |
| 2201 | { |
| 2202 | if (errno == ENOENT) |
| 2203 | { |
| 2204 | rtnval = wait (&statval); |
| 2205 | if (rtnval != inferior_pid) |
| 2206 | { |
| 2207 | error ("PIOCWSTOP, wait failed, returned %d", rtnval); |
| 2208 | /* NOTREACHED */ |
| 2209 | } |
| 2210 | } |
| 2211 | else |
| 2212 | { |
| 2213 | print_sys_errmsg (pi.pathname, errno); |
| 2214 | error ("PIOCSTATUS or PIOCWSTOP failed."); |
| 2215 | /* NOTREACHED */ |
| 2216 | } |
| 2217 | } |
| 2218 | else if (pi.prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)) |
| 2219 | { |
| 2220 | rtnval = pi.prstatus.pr_pid; |
| 2221 | why = pi.prstatus.pr_why; |
| 2222 | what = pi.prstatus.pr_what; |
| 2223 | if (why == PR_SIGNALLED) |
| 2224 | { |
| 2225 | statval = (what << 8) | 0177; |
| 2226 | } |
| 2227 | else if ((why == PR_SYSEXIT) |
| 2228 | && |
| 2229 | ( |
| 2230 | #ifdef SYS_exec |
| 2231 | what == SYS_exec |
| 2232 | #else |
| 2233 | 0 == 0 |
| 2234 | #endif |
| 2235 | #ifdef SYS_execve |
| 2236 | || what == SYS_execve |
| 2237 | #endif |
| 2238 | #ifdef SYS_execv |
| 2239 | || what == SYS_execv |
| 2240 | #endif |
| 2241 | )) |
| 2242 | { |
| 2243 | statval = (SIGTRAP << 8) | 0177; |
| 2244 | } |
| 2245 | else if (why == PR_REQUESTED) |
| 2246 | { |
| 2247 | statval = (SIGSTOP << 8) | 0177; |
| 2248 | } |
| 2249 | else if (why == PR_JOBCONTROL) |
| 2250 | { |
| 2251 | statval = (what << 8) | 0177; |
| 2252 | } |
| 2253 | else if (why == PR_FAULTED) |
| 2254 | { |
| 2255 | switch (what) |
| 2256 | { |
| 2257 | case FLTPRIV: |
| 2258 | case FLTILL: |
| 2259 | statval = (SIGILL << 8) | 0177; |
| 2260 | break; |
| 2261 | case FLTBPT: |
| 2262 | case FLTTRACE: |
| 2263 | statval = (SIGTRAP << 8) | 0177; |
| 2264 | break; |
| 2265 | case FLTSTACK: |
| 2266 | case FLTACCESS: |
| 2267 | case FLTBOUNDS: |
| 2268 | statval = (SIGSEGV << 8) | 0177; |
| 2269 | break; |
| 2270 | case FLTIOVF: |
| 2271 | case FLTIZDIV: |
| 2272 | case FLTFPE: |
| 2273 | statval = (SIGFPE << 8) | 0177; |
| 2274 | break; |
| 2275 | case FLTPAGE: /* Recoverable page fault */ |
| 2276 | default: |
| 2277 | rtnval = -1; |
| 2278 | error ("PIOCWSTOP, unknown why %d, what %d", why, what); |
| 2279 | /* NOTREACHED */ |
| 2280 | } |
| 2281 | } |
| 2282 | else |
| 2283 | { |
| 2284 | rtnval = -1; |
| 2285 | error ("PIOCWSTOP, unknown why %d, what %d", why, what); |
| 2286 | /* NOTREACHED */ |
| 2287 | } |
| 2288 | } |
| 2289 | else |
| 2290 | { |
| 2291 | error ("PIOCWSTOP, stopped for unknown/unhandled reason, flags %#x", |
| 2292 | pi.prstatus.pr_flags); |
| 2293 | /* NOTREACHED */ |
| 2294 | } |
| 2295 | if (statloc) |
| 2296 | { |
| 2297 | *statloc = statval; |
| 2298 | } |
| 2299 | return (rtnval); |
| 2300 | } |
| 2301 | |
| 2302 | /* |
| 2303 | |
| 2304 | LOCAL FUNCTION |
| 2305 | |
| 2306 | set_proc_siginfo - set a process's current signal info |
| 2307 | |
| 2308 | SYNOPSIS |
| 2309 | |
| 2310 | void set_proc_siginfo (struct procinfo *pip, int signo); |
| 2311 | |
| 2312 | DESCRIPTION |
| 2313 | |
| 2314 | Given a pointer to a process info struct in PIP and a signal number |
| 2315 | in SIGNO, set the process's current signal and its associated signal |
| 2316 | information. The signal will be delivered to the process immediately |
| 2317 | after execution is resumed, even if it is being held. In addition, |
| 2318 | this particular delivery will not cause another PR_SIGNALLED stop |
| 2319 | even if the signal is being traced. |
| 2320 | |
| 2321 | If we are not delivering the same signal that the prstatus siginfo |
| 2322 | struct contains information about, then synthesize a siginfo struct |
| 2323 | to match the signal we are doing to deliver, make it of the type |
| 2324 | "generated by a user process", and send this synthesized copy. When |
| 2325 | used to set the inferior's signal state, this will be required if we |
| 2326 | are not currently stopped because of a traced signal, or if we decide |
| 2327 | to continue with a different signal. |
| 2328 | |
| 2329 | Note that when continuing the inferior from a stop due to receipt |
| 2330 | of a traced signal, we either have set PRCSIG to clear the existing |
| 2331 | signal, or we have to call this function to do a PIOCSSIG with either |
| 2332 | the existing siginfo struct from pr_info, or one we have synthesized |
| 2333 | appropriately for the signal we want to deliver. Otherwise if the |
| 2334 | signal is still being traced, the inferior will immediately stop |
| 2335 | again. |
| 2336 | |
| 2337 | See siginfo(5) for more details. |
| 2338 | */ |
| 2339 | |
| 2340 | static void |
| 2341 | set_proc_siginfo (pip, signo) |
| 2342 | struct procinfo *pip; |
| 2343 | int signo; |
| 2344 | { |
| 2345 | struct siginfo newsiginfo; |
| 2346 | struct siginfo *sip; |
| 2347 | |
| 2348 | if (pip -> valid) |
| 2349 | { |
| 2350 | if (signo == pip -> prstatus.pr_info.si_signo) |
| 2351 | { |
| 2352 | sip = &pip -> prstatus.pr_info; |
| 2353 | } |
| 2354 | else |
| 2355 | { |
| 2356 | (void) memset ((char *) &newsiginfo, 0, sizeof (newsiginfo)); |
| 2357 | sip = &newsiginfo; |
| 2358 | sip -> si_signo = signo; |
| 2359 | sip -> si_code = 0; |
| 2360 | sip -> si_errno = 0; |
| 2361 | sip -> si_pid = getpid (); |
| 2362 | sip -> si_uid = getuid (); |
| 2363 | } |
| 2364 | if (ioctl (pip -> fd, PIOCSSIG, sip) < 0) |
| 2365 | { |
| 2366 | print_sys_errmsg (pip -> pathname, errno); |
| 2367 | warning ("PIOCSSIG failed"); |
| 2368 | } |
| 2369 | } |
| 2370 | } |
| 2371 | |
| 2372 | /* |
| 2373 | |
| 2374 | GLOBAL FUNCTION |
| 2375 | |
| 2376 | child_resume -- resume execution of the inferior process |
| 2377 | |
| 2378 | SYNOPSIS |
| 2379 | |
| 2380 | void child_resume (int step, int signo) |
| 2381 | |
| 2382 | DESCRIPTION |
| 2383 | |
| 2384 | Resume execution of the inferior process. If STEP is nozero, then |
| 2385 | just single step it. If SIGNAL is nonzero, restart it with that |
| 2386 | signal activated. |
| 2387 | |
| 2388 | NOTE |
| 2389 | |
| 2390 | It may not be absolutely necessary to specify the PC value for |
| 2391 | restarting, but to be safe we use the value that gdb considers |
| 2392 | to be current. One case where this might be necessary is if the |
| 2393 | user explicitly changes the PC value that gdb considers to be |
| 2394 | current. FIXME: Investigate if this is necessary or not. |
| 2395 | |
| 2396 | When attaching to a child process, if we forced it to stop with |
| 2397 | a PIOCSTOP, then we will have set the nopass_next_sigstop flag. |
| 2398 | Upon resuming the first time after such a stop, we explicitly |
| 2399 | inhibit sending it another SIGSTOP, which would be the normal |
| 2400 | result of default signal handling. One potential drawback to |
| 2401 | this is that we will also ignore any attempt to by the user |
| 2402 | to explicitly continue after the attach with a SIGSTOP. Ultimately |
| 2403 | this problem should be dealt with by making the routines that |
| 2404 | deal with the inferior a little smarter, and possibly even allow |
| 2405 | an inferior to continue running at the same time as gdb. (FIXME?) |
| 2406 | */ |
| 2407 | |
| 2408 | void |
| 2409 | child_resume (step, signo) |
| 2410 | int step; |
| 2411 | int signo; |
| 2412 | { |
| 2413 | errno = 0; |
| 2414 | pi.prrun.pr_flags = PRSVADDR | PRSTRACE | PRSFAULT | PRCFAULT; |
| 2415 | pi.prrun.pr_vaddr = (caddr_t) *(int *) ®isters[REGISTER_BYTE (PC_REGNUM)]; |
| 2416 | if (signo && !(signo == SIGSTOP && pi.nopass_next_sigstop)) |
| 2417 | { |
| 2418 | set_proc_siginfo (&pi, signo); |
| 2419 | } |
| 2420 | else |
| 2421 | { |
| 2422 | pi.prrun.pr_flags |= PRCSIG; |
| 2423 | } |
| 2424 | pi.nopass_next_sigstop = 0; |
| 2425 | if (step) |
| 2426 | { |
| 2427 | pi.prrun.pr_flags |= PRSTEP; |
| 2428 | } |
| 2429 | if (ioctl (pi.fd, PIOCRUN, &pi.prrun) != 0) |
| 2430 | { |
| 2431 | perror_with_name (pi.pathname); |
| 2432 | /* NOTREACHED */ |
| 2433 | } |
| 2434 | } |
| 2435 | |
| 2436 | /* |
| 2437 | |
| 2438 | GLOBAL FUNCTION |
| 2439 | |
| 2440 | fetch_inferior_registers -- fetch current registers from inferior |
| 2441 | |
| 2442 | SYNOPSIS |
| 2443 | |
| 2444 | void fetch_inferior_registers (int regno) |
| 2445 | |
| 2446 | DESCRIPTION |
| 2447 | |
| 2448 | Read the current values of the inferior's registers, both the |
| 2449 | general register set and floating point registers (if supported) |
| 2450 | and update gdb's idea of their current values. |
| 2451 | |
| 2452 | */ |
| 2453 | |
| 2454 | void |
| 2455 | fetch_inferior_registers (regno) |
| 2456 | int regno; |
| 2457 | { |
| 2458 | if (ioctl (pi.fd, PIOCGREG, &pi.gregset) != -1) |
| 2459 | { |
| 2460 | supply_gregset (&pi.gregset); |
| 2461 | } |
| 2462 | #if defined (FP0_REGNUM) |
| 2463 | if (ioctl (pi.fd, PIOCGFPREG, &pi.fpregset) != -1) |
| 2464 | { |
| 2465 | supply_fpregset (&pi.fpregset); |
| 2466 | } |
| 2467 | #endif |
| 2468 | } |
| 2469 | |
| 2470 | /* |
| 2471 | |
| 2472 | GLOBAL FUNCTION |
| 2473 | |
| 2474 | fetch_core_registers -- fetch current registers from core file data |
| 2475 | |
| 2476 | SYNOPSIS |
| 2477 | |
| 2478 | void fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, |
| 2479 | int which, unsigned in reg_addr) |
| 2480 | |
| 2481 | DESCRIPTION |
| 2482 | |
| 2483 | Read the values of either the general register set (WHICH equals 0) |
| 2484 | or the floating point register set (WHICH equals 2) from the core |
| 2485 | file data (pointed to by CORE_REG_SECT), and update gdb's idea of |
| 2486 | their current values. The CORE_REG_SIZE parameter is ignored. |
| 2487 | |
| 2488 | NOTES |
| 2489 | |
| 2490 | Use the indicated sizes to validate the gregset and fpregset |
| 2491 | structures. |
| 2492 | */ |
| 2493 | |
| 2494 | void |
| 2495 | fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr) |
| 2496 | char *core_reg_sect; |
| 2497 | unsigned core_reg_size; |
| 2498 | int which; |
| 2499 | unsigned int reg_addr; /* Unused in this version */ |
| 2500 | { |
| 2501 | |
| 2502 | if (which == 0) |
| 2503 | { |
| 2504 | if (core_reg_size != sizeof (pi.gregset)) |
| 2505 | { |
| 2506 | warning ("wrong size gregset struct in core file"); |
| 2507 | } |
| 2508 | else |
| 2509 | { |
| 2510 | (void) memcpy ((char *) &pi.gregset, core_reg_sect, |
| 2511 | sizeof (pi.gregset)); |
| 2512 | supply_gregset (&pi.gregset); |
| 2513 | } |
| 2514 | } |
| 2515 | else if (which == 2) |
| 2516 | { |
| 2517 | if (core_reg_size != sizeof (pi.fpregset)) |
| 2518 | { |
| 2519 | warning ("wrong size fpregset struct in core file"); |
| 2520 | } |
| 2521 | else |
| 2522 | { |
| 2523 | (void) memcpy ((char *) &pi.fpregset, core_reg_sect, |
| 2524 | sizeof (pi.fpregset)); |
| 2525 | #if defined (FP0_REGNUM) |
| 2526 | supply_fpregset (&pi.fpregset); |
| 2527 | #endif |
| 2528 | } |
| 2529 | } |
| 2530 | } |
| 2531 | |
| 2532 | /* |
| 2533 | |
| 2534 | LOCAL FUNCTION |
| 2535 | |
| 2536 | proc_init_failed - called whenever /proc access initialization fails |
| 2537 | |
| 2538 | SYNOPSIS |
| 2539 | |
| 2540 | static void proc_init_failed (char *why) |
| 2541 | |
| 2542 | DESCRIPTION |
| 2543 | |
| 2544 | This function is called whenever initialization of access to a /proc |
| 2545 | entry fails. It prints a suitable error message, does some cleanup, |
| 2546 | and then invokes the standard error processing routine which dumps |
| 2547 | us back into the command loop. |
| 2548 | */ |
| 2549 | |
| 2550 | static void |
| 2551 | proc_init_failed (why) |
| 2552 | char *why; |
| 2553 | { |
| 2554 | print_sys_errmsg (pi.pathname, errno); |
| 2555 | (void) kill (pi.pid, SIGKILL); |
| 2556 | close_proc_file (&pi); |
| 2557 | error (why); |
| 2558 | /* NOTREACHED */ |
| 2559 | } |
| 2560 | |
| 2561 | /* |
| 2562 | |
| 2563 | LOCAL FUNCTION |
| 2564 | |
| 2565 | close_proc_file - close any currently open /proc entry |
| 2566 | |
| 2567 | SYNOPSIS |
| 2568 | |
| 2569 | static void close_proc_file (struct procinfo *pip) |
| 2570 | |
| 2571 | DESCRIPTION |
| 2572 | |
| 2573 | Close any currently open /proc entry and mark the process information |
| 2574 | entry as invalid. In order to ensure that we don't try to reuse any |
| 2575 | stale information, the pid, fd, and pathnames are explicitly |
| 2576 | invalidated, which may be overkill. |
| 2577 | |
| 2578 | */ |
| 2579 | |
| 2580 | static void |
| 2581 | close_proc_file (pip) |
| 2582 | struct procinfo *pip; |
| 2583 | { |
| 2584 | pip -> pid = 0; |
| 2585 | if (pip -> valid) |
| 2586 | { |
| 2587 | (void) close (pip -> fd); |
| 2588 | } |
| 2589 | pip -> fd = -1; |
| 2590 | if (pip -> pathname) |
| 2591 | { |
| 2592 | free (pip -> pathname); |
| 2593 | pip -> pathname = NULL; |
| 2594 | } |
| 2595 | pip -> valid = 0; |
| 2596 | } |
| 2597 | |
| 2598 | /* |
| 2599 | |
| 2600 | LOCAL FUNCTION |
| 2601 | |
| 2602 | open_proc_file - open a /proc entry for a given process id |
| 2603 | |
| 2604 | SYNOPSIS |
| 2605 | |
| 2606 | static int open_proc_file (pid, struct procinfo *pip) |
| 2607 | |
| 2608 | DESCRIPTION |
| 2609 | |
| 2610 | Given a process id, close the existing open /proc entry (if any) |
| 2611 | and open one for the new process id. Once it is open, then |
| 2612 | mark the local process information structure as valid, which |
| 2613 | guarantees that the pid, fd, and pathname fields match an open |
| 2614 | /proc entry. Returns zero if the open fails, nonzero otherwise. |
| 2615 | |
| 2616 | Note that the pathname is left intact, even when the open fails, |
| 2617 | so that callers can use it to construct meaningful error messages |
| 2618 | rather than just "file open failed". |
| 2619 | */ |
| 2620 | |
| 2621 | static int |
| 2622 | open_proc_file (pid, pip) |
| 2623 | int pid; |
| 2624 | struct procinfo *pip; |
| 2625 | { |
| 2626 | pip -> valid = 0; |
| 2627 | if (pip -> valid) |
| 2628 | { |
| 2629 | (void) close (pip -> fd); |
| 2630 | } |
| 2631 | if (pip -> pathname == NULL) |
| 2632 | { |
| 2633 | pip -> pathname = xmalloc (32); |
| 2634 | } |
| 2635 | sprintf (pip -> pathname, PROC_NAME_FMT, pid); |
| 2636 | if ((pip -> fd = open (pip -> pathname, O_RDWR)) >= 0) |
| 2637 | { |
| 2638 | pip -> valid = 1; |
| 2639 | pip -> pid = pid; |
| 2640 | } |
| 2641 | return (pip -> valid); |
| 2642 | } |
| 2643 | |
| 2644 | static char * |
| 2645 | mappingflags (flags) |
| 2646 | long flags; |
| 2647 | { |
| 2648 | static char asciiflags[8]; |
| 2649 | |
| 2650 | strcpy (asciiflags, "-------"); |
| 2651 | #if defined (MA_PHYS) |
| 2652 | if (flags & MA_PHYS) asciiflags[0] = 'd'; |
| 2653 | #endif |
| 2654 | if (flags & MA_STACK) asciiflags[1] = 's'; |
| 2655 | if (flags & MA_BREAK) asciiflags[2] = 'b'; |
| 2656 | if (flags & MA_SHARED) asciiflags[3] = 's'; |
| 2657 | if (flags & MA_READ) asciiflags[4] = 'r'; |
| 2658 | if (flags & MA_WRITE) asciiflags[5] = 'w'; |
| 2659 | if (flags & MA_EXEC) asciiflags[6] = 'x'; |
| 2660 | return (asciiflags); |
| 2661 | } |
| 2662 | |
| 2663 | static void |
| 2664 | info_proc_flags (pip, summary) |
| 2665 | struct procinfo *pip; |
| 2666 | int summary; |
| 2667 | { |
| 2668 | struct trans *transp; |
| 2669 | |
| 2670 | printf_filtered ("%-32s", "Process status flags:"); |
| 2671 | if (!summary) |
| 2672 | { |
| 2673 | printf_filtered ("\n\n"); |
| 2674 | } |
| 2675 | for (transp = pr_flag_table; transp -> name != NULL; transp++) |
| 2676 | { |
| 2677 | if (pip -> prstatus.pr_flags & transp -> value) |
| 2678 | { |
| 2679 | if (summary) |
| 2680 | { |
| 2681 | printf_filtered ("%s ", transp -> name); |
| 2682 | } |
| 2683 | else |
| 2684 | { |
| 2685 | printf_filtered ("\t%-16s %s.\n", transp -> name, transp -> desc); |
| 2686 | } |
| 2687 | } |
| 2688 | } |
| 2689 | printf_filtered ("\n"); |
| 2690 | } |
| 2691 | |
| 2692 | static void |
| 2693 | info_proc_stop (pip, summary) |
| 2694 | struct procinfo *pip; |
| 2695 | int summary; |
| 2696 | { |
| 2697 | struct trans *transp; |
| 2698 | int why; |
| 2699 | int what; |
| 2700 | |
| 2701 | why = pip -> prstatus.pr_why; |
| 2702 | what = pip -> prstatus.pr_what; |
| 2703 | |
| 2704 | if (pip -> prstatus.pr_flags & PR_STOPPED) |
| 2705 | { |
| 2706 | printf_filtered ("%-32s", "Reason for stopping:"); |
| 2707 | if (!summary) |
| 2708 | { |
| 2709 | printf_filtered ("\n\n"); |
| 2710 | } |
| 2711 | for (transp = pr_why_table; transp -> name != NULL; transp++) |
| 2712 | { |
| 2713 | if (why == transp -> value) |
| 2714 | { |
| 2715 | if (summary) |
| 2716 | { |
| 2717 | printf_filtered ("%s ", transp -> name); |
| 2718 | } |
| 2719 | else |
| 2720 | { |
| 2721 | printf_filtered ("\t%-16s %s.\n", |
| 2722 | transp -> name, transp -> desc); |
| 2723 | } |
| 2724 | break; |
| 2725 | } |
| 2726 | } |
| 2727 | |
| 2728 | /* Use the pr_why field to determine what the pr_what field means, and |
| 2729 | print more information. */ |
| 2730 | |
| 2731 | switch (why) |
| 2732 | { |
| 2733 | case PR_REQUESTED: |
| 2734 | /* pr_what is unused for this case */ |
| 2735 | break; |
| 2736 | case PR_JOBCONTROL: |
| 2737 | case PR_SIGNALLED: |
| 2738 | if (summary) |
| 2739 | { |
| 2740 | printf_filtered ("%s ", signalname (what)); |
| 2741 | } |
| 2742 | else |
| 2743 | { |
| 2744 | printf_filtered ("\t%-16s %s.\n", signalname (what), |
| 2745 | sys_siglist[what]); |
| 2746 | } |
| 2747 | break; |
| 2748 | case PR_SYSENTRY: |
| 2749 | if (summary) |
| 2750 | { |
| 2751 | printf_filtered ("%s ", syscallname (what)); |
| 2752 | } |
| 2753 | else |
| 2754 | { |
| 2755 | printf_filtered ("\t%-16s %s.\n", syscallname (what), |
| 2756 | "Entered this system call"); |
| 2757 | } |
| 2758 | break; |
| 2759 | case PR_SYSEXIT: |
| 2760 | if (summary) |
| 2761 | { |
| 2762 | printf_filtered ("%s ", syscallname (what)); |
| 2763 | } |
| 2764 | else |
| 2765 | { |
| 2766 | printf_filtered ("\t%-16s %s.\n", syscallname (what), |
| 2767 | "Returned from this system call"); |
| 2768 | } |
| 2769 | break; |
| 2770 | case PR_FAULTED: |
| 2771 | if (summary) |
| 2772 | { |
| 2773 | printf_filtered ("%s ", |
| 2774 | lookupname (faults_table, what, "fault")); |
| 2775 | } |
| 2776 | else |
| 2777 | { |
| 2778 | printf_filtered ("\t%-16s %s.\n", |
| 2779 | lookupname (faults_table, what, "fault"), |
| 2780 | lookupdesc (faults_table, what)); |
| 2781 | } |
| 2782 | break; |
| 2783 | } |
| 2784 | printf_filtered ("\n"); |
| 2785 | } |
| 2786 | } |
| 2787 | |
| 2788 | static void |
| 2789 | info_proc_siginfo (pip, summary) |
| 2790 | struct procinfo *pip; |
| 2791 | int summary; |
| 2792 | { |
| 2793 | struct siginfo *sip; |
| 2794 | |
| 2795 | if ((pip -> prstatus.pr_flags & PR_STOPPED) && |
| 2796 | (pip -> prstatus.pr_why == PR_SIGNALLED || |
| 2797 | pip -> prstatus.pr_why == PR_FAULTED)) |
| 2798 | { |
| 2799 | printf_filtered ("%-32s", "Additional signal/fault info:"); |
| 2800 | sip = &pip -> prstatus.pr_info; |
| 2801 | if (summary) |
| 2802 | { |
| 2803 | printf_filtered ("%s ", signalname (sip -> si_signo)); |
| 2804 | if (sip -> si_errno > 0) |
| 2805 | { |
| 2806 | printf_filtered ("%s ", lookupname (errno_table, |
| 2807 | sip -> si_errno, "errno")); |
| 2808 | } |
| 2809 | if (sip -> si_code <= 0) |
| 2810 | { |
| 2811 | printf_filtered ("sent by pid %d, uid %d ", sip -> si_pid, |
| 2812 | sip -> si_uid); |
| 2813 | } |
| 2814 | else |
| 2815 | { |
| 2816 | printf_filtered ("%s ", sigcodename (sip)); |
| 2817 | if ((sip -> si_signo == SIGILL) || |
| 2818 | (sip -> si_signo == SIGFPE) || |
| 2819 | (sip -> si_signo == SIGSEGV) || |
| 2820 | (sip -> si_signo == SIGBUS)) |
| 2821 | { |
| 2822 | printf_filtered ("addr=%#x ", sip -> si_addr); |
| 2823 | } |
| 2824 | else if ((sip -> si_signo == SIGCHLD)) |
| 2825 | { |
| 2826 | printf_filtered ("child pid %u, status %u ", |
| 2827 | sip -> si_pid, |
| 2828 | sip -> si_status); |
| 2829 | } |
| 2830 | else if ((sip -> si_signo == SIGPOLL)) |
| 2831 | { |
| 2832 | printf_filtered ("band %u ", sip -> si_band); |
| 2833 | } |
| 2834 | } |
| 2835 | } |
| 2836 | else |
| 2837 | { |
| 2838 | printf_filtered ("\n\n"); |
| 2839 | printf_filtered ("\t%-16s %s.\n", signalname (sip -> si_signo), |
| 2840 | sys_siglist[sip -> si_signo]); |
| 2841 | if (sip -> si_errno > 0) |
| 2842 | { |
| 2843 | printf_filtered ("\t%-16s %s.\n", |
| 2844 | lookupname (errno_table, |
| 2845 | sip -> si_errno, "errno"), |
| 2846 | lookupdesc (errno_table, sip -> si_errno)); |
| 2847 | } |
| 2848 | if (sip -> si_code <= 0) |
| 2849 | { |
| 2850 | printf_filtered ("\t%-16u %s\n", sip -> si_pid, |
| 2851 | "PID of process sending signal"); |
| 2852 | printf_filtered ("\t%-16u %s\n", sip -> si_uid, |
| 2853 | "UID of process sending signal"); |
| 2854 | } |
| 2855 | else |
| 2856 | { |
| 2857 | printf_filtered ("\t%-16s %s.\n", sigcodename (sip), |
| 2858 | sigcodedesc (sip)); |
| 2859 | if ((sip -> si_signo == SIGILL) || |
| 2860 | (sip -> si_signo == SIGFPE)) |
| 2861 | { |
| 2862 | printf_filtered ("\t%-16#x %s.\n", sip -> si_addr, |
| 2863 | "Address of faulting instruction"); |
| 2864 | } |
| 2865 | else if ((sip -> si_signo == SIGSEGV) || |
| 2866 | (sip -> si_signo == SIGBUS)) |
| 2867 | { |
| 2868 | printf_filtered ("\t%-16#x %s.\n", sip -> si_addr, |
| 2869 | "Address of faulting memory reference"); |
| 2870 | } |
| 2871 | else if ((sip -> si_signo == SIGCHLD)) |
| 2872 | { |
| 2873 | printf_filtered ("\t%-16u %s.\n", sip -> si_pid, |
| 2874 | "Child process ID"); |
| 2875 | printf_filtered ("\t%-16u %s.\n", sip -> si_status, |
| 2876 | "Child process exit value or signal"); |
| 2877 | } |
| 2878 | else if ((sip -> si_signo == SIGPOLL)) |
| 2879 | { |
| 2880 | printf_filtered ("\t%-16u %s.\n", sip -> si_band, |
| 2881 | "Band event for POLL_{IN,OUT,MSG}"); |
| 2882 | } |
| 2883 | } |
| 2884 | } |
| 2885 | printf_filtered ("\n"); |
| 2886 | } |
| 2887 | } |
| 2888 | |
| 2889 | static void |
| 2890 | info_proc_syscalls (pip, summary) |
| 2891 | struct procinfo *pip; |
| 2892 | int summary; |
| 2893 | { |
| 2894 | int syscallnum; |
| 2895 | |
| 2896 | if (!summary) |
| 2897 | { |
| 2898 | |
| 2899 | #if 0 /* FIXME: Needs to use gdb-wide configured info about system calls. */ |
| 2900 | if (pip -> prstatus.pr_flags & PR_ASLEEP) |
| 2901 | { |
| 2902 | int syscallnum = pip -> prstatus.pr_reg[R_D0]; |
| 2903 | if (summary) |
| 2904 | { |
| 2905 | printf_filtered ("%-32s", "Sleeping in system call:"); |
| 2906 | printf_filtered ("%s", syscallname (syscallnum)); |
| 2907 | } |
| 2908 | else |
| 2909 | { |
| 2910 | printf_filtered ("Sleeping in system call '%s'.\n", |
| 2911 | syscallname (syscallnum)); |
| 2912 | } |
| 2913 | } |
| 2914 | #endif |
| 2915 | |
| 2916 | if (ioctl (pip -> fd, PIOCGENTRY, &pip -> entryset) < 0) |
| 2917 | { |
| 2918 | print_sys_errmsg (pip -> pathname, errno); |
| 2919 | error ("PIOCGENTRY failed"); |
| 2920 | } |
| 2921 | |
| 2922 | if (ioctl (pip -> fd, PIOCGEXIT, &pip -> exitset) < 0) |
| 2923 | { |
| 2924 | print_sys_errmsg (pip -> pathname, errno); |
| 2925 | error ("PIOCGEXIT failed"); |
| 2926 | } |
| 2927 | |
| 2928 | printf_filtered ("System call tracing information:\n\n"); |
| 2929 | |
| 2930 | printf_filtered ("\t%-12s %-8s %-8s\n", |
| 2931 | "System call", |
| 2932 | "Entry", |
| 2933 | "Exit"); |
| 2934 | for (syscallnum = 0; syscallnum < MAX_SYSCALLS; syscallnum++) |
| 2935 | { |
| 2936 | QUIT; |
| 2937 | if (syscall_table[syscallnum] != NULL) |
| 2938 | { |
| 2939 | printf_filtered ("\t%-12s ", syscall_table[syscallnum]); |
| 2940 | printf_filtered ("%-8s ", |
| 2941 | prismember (&pip -> entryset, syscallnum) |
| 2942 | ? "on" : "off"); |
| 2943 | printf_filtered ("%-8s ", |
| 2944 | prismember (&pip -> exitset, syscallnum) |
| 2945 | ? "on" : "off"); |
| 2946 | printf_filtered ("\n"); |
| 2947 | } |
| 2948 | } |
| 2949 | printf_filtered ("\n"); |
| 2950 | } |
| 2951 | } |
| 2952 | |
| 2953 | static char * |
| 2954 | signalname (signo) |
| 2955 | int signo; |
| 2956 | { |
| 2957 | char *abbrev; |
| 2958 | static char locbuf[32]; |
| 2959 | |
| 2960 | abbrev = sig_abbrev (signo); |
| 2961 | if (abbrev == NULL) |
| 2962 | { |
| 2963 | sprintf (locbuf, "signal %d", signo); |
| 2964 | } |
| 2965 | else |
| 2966 | { |
| 2967 | sprintf (locbuf, "SIG%s (%d)", abbrev, signo); |
| 2968 | } |
| 2969 | return (locbuf); |
| 2970 | } |
| 2971 | |
| 2972 | static void |
| 2973 | info_proc_signals (pip, summary) |
| 2974 | struct procinfo *pip; |
| 2975 | int summary; |
| 2976 | { |
| 2977 | int signo; |
| 2978 | |
| 2979 | if (!summary) |
| 2980 | { |
| 2981 | if (ioctl (pip -> fd, PIOCGTRACE, &pip -> trace) < 0) |
| 2982 | { |
| 2983 | print_sys_errmsg (pip -> pathname, errno); |
| 2984 | error ("PIOCGTRACE failed"); |
| 2985 | } |
| 2986 | |
| 2987 | printf_filtered ("Disposition of signals:\n\n"); |
| 2988 | printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n", |
| 2989 | "Signal", "Trace", "Hold", "Pending", "Description"); |
| 2990 | for (signo = 0; signo < NSIG; signo++) |
| 2991 | { |
| 2992 | QUIT; |
| 2993 | printf_filtered ("\t%-15s ", signalname (signo)); |
| 2994 | printf_filtered ("%-8s ", |
| 2995 | prismember (&pip -> trace, signo) |
| 2996 | ? "on" : "off"); |
| 2997 | printf_filtered ("%-8s ", |
| 2998 | prismember (&pip -> prstatus.pr_sighold, signo) |
| 2999 | ? "on" : "off"); |
| 3000 | printf_filtered ("%-8s ", |
| 3001 | prismember (&pip -> prstatus.pr_sigpend, signo) |
| 3002 | ? "yes" : "no"); |
| 3003 | printf_filtered (" %s\n", sys_siglist[signo]); |
| 3004 | } |
| 3005 | printf_filtered ("\n"); |
| 3006 | } |
| 3007 | } |
| 3008 | |
| 3009 | static void |
| 3010 | info_proc_faults (pip, summary) |
| 3011 | struct procinfo *pip; |
| 3012 | int summary; |
| 3013 | { |
| 3014 | struct trans *transp; |
| 3015 | |
| 3016 | if (!summary) |
| 3017 | { |
| 3018 | if (ioctl (pip -> fd, PIOCGFAULT, &pip -> fltset) < 0) |
| 3019 | { |
| 3020 | print_sys_errmsg (pip -> pathname, errno); |
| 3021 | error ("PIOCGFAULT failed"); |
| 3022 | } |
| 3023 | |
| 3024 | printf_filtered ("Current traced hardware fault set:\n\n"); |
| 3025 | printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace"); |
| 3026 | |
| 3027 | for (transp = faults_table; transp -> name != NULL; transp++) |
| 3028 | { |
| 3029 | QUIT; |
| 3030 | printf_filtered ("\t%-12s ", transp -> name); |
| 3031 | printf_filtered ("%-8s", prismember (&pip -> fltset, transp -> value) |
| 3032 | ? "on" : "off"); |
| 3033 | printf_filtered ("\n"); |
| 3034 | } |
| 3035 | printf_filtered ("\n"); |
| 3036 | } |
| 3037 | } |
| 3038 | |
| 3039 | static void |
| 3040 | info_proc_mappings (pip, summary) |
| 3041 | struct procinfo *pip; |
| 3042 | int summary; |
| 3043 | { |
| 3044 | int nmap; |
| 3045 | struct prmap *prmaps; |
| 3046 | struct prmap *prmap; |
| 3047 | |
| 3048 | if (!summary) |
| 3049 | { |
| 3050 | printf_filtered ("Mapped address spaces:\n\n"); |
| 3051 | printf_filtered ("\t%10s %10s %10s %10s %7s\n", |
| 3052 | "Start Addr", |
| 3053 | " End Addr", |
| 3054 | " Size", |
| 3055 | " Offset", |
| 3056 | "Flags"); |
| 3057 | if (ioctl (pip -> fd, PIOCNMAP, &nmap) == 0) |
| 3058 | { |
| 3059 | prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps)); |
| 3060 | if (ioctl (pip -> fd, PIOCMAP, prmaps) == 0) |
| 3061 | { |
| 3062 | for (prmap = prmaps; prmap -> pr_size; ++prmap) |
| 3063 | { |
| 3064 | printf_filtered ("\t%#10x %#10x %#10x %#10x %7s\n", |
| 3065 | prmap -> pr_vaddr, |
| 3066 | prmap -> pr_vaddr + prmap -> pr_size - 1, |
| 3067 | prmap -> pr_size, |
| 3068 | prmap -> pr_off, |
| 3069 | mappingflags (prmap -> pr_mflags)); |
| 3070 | } |
| 3071 | } |
| 3072 | } |
| 3073 | printf_filtered ("\n"); |
| 3074 | } |
| 3075 | } |
| 3076 | |
| 3077 | /* |
| 3078 | |
| 3079 | LOCAL FUNCTION |
| 3080 | |
| 3081 | info_proc -- implement the "info proc" command |
| 3082 | |
| 3083 | SYNOPSIS |
| 3084 | |
| 3085 | void info_proc (char *args, int from_tty) |
| 3086 | |
| 3087 | DESCRIPTION |
| 3088 | |
| 3089 | Implement gdb's "info proc" command by using the /proc interface |
| 3090 | to print status information about any currently running process. |
| 3091 | |
| 3092 | Examples of the use of "info proc" are: |
| 3093 | |
| 3094 | info proc (prints summary info for current inferior) |
| 3095 | info proc 123 (prints summary info for process with pid 123) |
| 3096 | info proc mappings (prints address mappings) |
| 3097 | info proc times (prints process/children times) |
| 3098 | info proc id (prints pid, ppid, gid, sid, etc) |
| 3099 | info proc status (prints general process state info) |
| 3100 | info proc signals (prints info about signal handling) |
| 3101 | info proc all (prints all info) |
| 3102 | |
| 3103 | */ |
| 3104 | |
| 3105 | static void |
| 3106 | info_proc (args, from_tty) |
| 3107 | char *args; |
| 3108 | int from_tty; |
| 3109 | { |
| 3110 | int pid; |
| 3111 | struct procinfo pii; |
| 3112 | struct procinfo *pip; |
| 3113 | struct cleanup *old_chain; |
| 3114 | char *nexttok; |
| 3115 | char **argv; |
| 3116 | int argsize; |
| 3117 | int summary = 1; |
| 3118 | int flags = 0; |
| 3119 | int syscalls = 0; |
| 3120 | int signals = 0; |
| 3121 | int faults = 0; |
| 3122 | int mappings = 0; |
| 3123 | int times = 0; |
| 3124 | int id = 0; |
| 3125 | int status = 0; |
| 3126 | int all = 0; |
| 3127 | |
| 3128 | old_chain = make_cleanup (null_cleanup, 0); |
| 3129 | |
| 3130 | /* Default to using the current inferior if no pid specified */ |
| 3131 | |
| 3132 | pip = π |
| 3133 | |
| 3134 | if (args != NULL) |
| 3135 | { |
| 3136 | if ((argv = buildargv (args)) == NULL) |
| 3137 | { |
| 3138 | nomem (0); |
| 3139 | } |
| 3140 | make_cleanup (freeargv, (char *) argv); |
| 3141 | |
| 3142 | while (*argv != NULL) |
| 3143 | { |
| 3144 | argsize = strlen (*argv); |
| 3145 | if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0) |
| 3146 | { |
| 3147 | summary = 0; |
| 3148 | all = 1; |
| 3149 | } |
| 3150 | else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0) |
| 3151 | { |
| 3152 | summary = 0; |
| 3153 | faults = 1; |
| 3154 | } |
| 3155 | else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0) |
| 3156 | { |
| 3157 | summary = 0; |
| 3158 | flags = 1; |
| 3159 | } |
| 3160 | else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0) |
| 3161 | { |
| 3162 | summary = 0; |
| 3163 | id = 1; |
| 3164 | } |
| 3165 | else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0) |
| 3166 | { |
| 3167 | summary = 0; |
| 3168 | mappings = 1; |
| 3169 | } |
| 3170 | else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0) |
| 3171 | { |
| 3172 | summary = 0; |
| 3173 | signals = 1; |
| 3174 | } |
| 3175 | else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0) |
| 3176 | { |
| 3177 | summary = 0; |
| 3178 | status = 1; |
| 3179 | } |
| 3180 | else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0) |
| 3181 | { |
| 3182 | summary = 0; |
| 3183 | syscalls = 1; |
| 3184 | } |
| 3185 | else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0) |
| 3186 | { |
| 3187 | summary = 0; |
| 3188 | times = 1; |
| 3189 | } |
| 3190 | else if ((pii.pid = atoi (*argv)) > 0) |
| 3191 | { |
| 3192 | pid = pii.pid; |
| 3193 | pip = &pii; |
| 3194 | (void) memset (&pii, 0, sizeof (pii)); |
| 3195 | if (!open_proc_file (pid, pip)) |
| 3196 | { |
| 3197 | perror_with_name (pip -> pathname); |
| 3198 | /* NOTREACHED */ |
| 3199 | } |
| 3200 | make_cleanup (close_proc_file, pip); |
| 3201 | } |
| 3202 | else if (**argv != '\000') |
| 3203 | { |
| 3204 | error ("Unrecognized or ambiguous keyword `%s'.", *argv); |
| 3205 | } |
| 3206 | argv++; |
| 3207 | } |
| 3208 | } |
| 3209 | |
| 3210 | /* If we don't have a valid open process at this point, then we have no |
| 3211 | inferior or didn't specify a specific pid. */ |
| 3212 | |
| 3213 | if (!pip -> valid) |
| 3214 | { |
| 3215 | error ("No process. Run an inferior or specify an explicit pid."); |
| 3216 | } |
| 3217 | if (ioctl (pip -> fd, PIOCSTATUS, &(pip -> prstatus)) < 0) |
| 3218 | { |
| 3219 | print_sys_errmsg (pip -> pathname, errno); |
| 3220 | error ("PIOCSTATUS failed"); |
| 3221 | } |
| 3222 | |
| 3223 | /* Print verbose information of the requested type(s), or just a summary |
| 3224 | of the information for all types. */ |
| 3225 | |
| 3226 | printf_filtered ("\nInformation for %s:\n\n", pip -> pathname); |
| 3227 | if (summary || all || flags) |
| 3228 | { |
| 3229 | info_proc_flags (pip, summary); |
| 3230 | } |
| 3231 | if (summary || all) |
| 3232 | { |
| 3233 | info_proc_stop (pip, summary); |
| 3234 | } |
| 3235 | if (summary || all || signals || faults) |
| 3236 | { |
| 3237 | info_proc_siginfo (pip, summary); |
| 3238 | } |
| 3239 | if (summary || all || syscalls) |
| 3240 | { |
| 3241 | info_proc_syscalls (pip, summary); |
| 3242 | } |
| 3243 | if (summary || all || mappings) |
| 3244 | { |
| 3245 | info_proc_mappings (pip, summary); |
| 3246 | } |
| 3247 | if (summary || all || signals) |
| 3248 | { |
| 3249 | info_proc_signals (pip, summary); |
| 3250 | } |
| 3251 | if (summary || all || faults) |
| 3252 | { |
| 3253 | info_proc_faults (pip, summary); |
| 3254 | } |
| 3255 | printf_filtered ("\n"); |
| 3256 | |
| 3257 | /* All done, deal with closing any temporary process info structure, |
| 3258 | freeing temporary memory , etc. */ |
| 3259 | |
| 3260 | do_cleanups (old_chain); |
| 3261 | } |
| 3262 | |
| 3263 | /* |
| 3264 | |
| 3265 | GLOBAL FUNCTION |
| 3266 | |
| 3267 | _initialize_proc_fs -- initialize the process file system stuff |
| 3268 | |
| 3269 | SYNOPSIS |
| 3270 | |
| 3271 | void _initialize_proc_fs (void) |
| 3272 | |
| 3273 | DESCRIPTION |
| 3274 | |
| 3275 | Do required initializations during gdb startup for using the |
| 3276 | /proc file system interface. |
| 3277 | |
| 3278 | */ |
| 3279 | |
| 3280 | static char *proc_desc = |
| 3281 | "Show process status information using /proc entry.\n\ |
| 3282 | Specify process id or use current inferior by default.\n\ |
| 3283 | Specify keywords for detailed information; default is summary.\n\ |
| 3284 | Keywords are: `all', `faults', `flags', `id', `mappings', `signals',\n\ |
| 3285 | `status', `syscalls', and `times'.\n\ |
| 3286 | Unambiguous abbreviations may be used."; |
| 3287 | |
| 3288 | void |
| 3289 | _initialize_proc_fs () |
| 3290 | { |
| 3291 | add_info ("proc", info_proc, proc_desc); |
| 3292 | init_syscall_table (); |
| 3293 | } |
| 3294 | |
| 3295 | #endif /* USE_PROC_FS */ |