10b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil/* Get Dwarf Frame state for target live PID process. 2879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard Copyright (C) 2013, 2014, 2015 Red Hat, Inc. 30b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil This file is part of elfutils. 40b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 50b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil This file is free software; you can redistribute it and/or modify 60b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil it under the terms of either 70b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 80b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil * the GNU Lesser General Public License as published by the Free 90b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil Software Foundation; either version 3 of the License, or (at 100b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil your option) any later version 110b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 120b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil or 130b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 140b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil * the GNU General Public License as published by the Free 150b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil Software Foundation; either version 2 of the License, or (at 160b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil your option) any later version 170b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 180b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil or both in parallel, as here. 190b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 200b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil elfutils is distributed in the hope that it will be useful, but 210b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil WITHOUT ANY WARRANTY; without even the implied warranty of 220b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 230b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil General Public License for more details. 240b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 250b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil You should have received copies of the GNU General Public License and 260b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil the GNU Lesser General Public License along with this program. If 270b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil not, see <http://www.gnu.org/licenses/>. */ 280b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 29879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard#include "libelfP.h" 300b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#include "libdwflP.h" 31879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard#include <sys/types.h> 32879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard#include <sys/stat.h> 33879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard#include <fcntl.h> 340b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#include <sys/ptrace.h> 350b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#include <sys/wait.h> 360b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#include <dirent.h> 370b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#include <sys/syscall.h> 380b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#include <unistd.h> 390b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 400b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#ifndef MAX 410b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil# define MAX(a, b) ((a) > (b) ? (a) : (b)) 420b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#endif 430b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 4402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx#ifdef __linux__ 450b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 460b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilstatic bool 470b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvillinux_proc_pid_is_stopped (pid_t pid) 480b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 490b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil char buffer[64]; 500b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil FILE *procfile; 510b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil bool retval, have_state; 520b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 530b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil snprintf (buffer, sizeof (buffer), "/proc/%ld/status", (long) pid); 540b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil procfile = fopen (buffer, "r"); 550b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (procfile == NULL) 560b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return false; 570b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 580b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil have_state = false; 590b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil while (fgets (buffer, sizeof (buffer), procfile) != NULL) 600b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (strncmp (buffer, "State:", 6) == 0) 610b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 620b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil have_state = true; 630b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil break; 640b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 650b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil retval = (have_state && strstr (buffer, "T (stopped)") != NULL); 660b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil fclose (procfile); 670b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return retval; 680b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 690b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 704b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaardbool 714b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaardinternal_function 724b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard__libdwfl_ptrace_attach (pid_t tid, bool *tid_was_stoppedp) 730b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 740b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (ptrace (PTRACE_ATTACH, tid, NULL, NULL) != 0) 750b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 760b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil __libdwfl_seterrno (DWFL_E_ERRNO); 770b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return false; 780b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 7910d7a39aa2a509c16edd205c94b365ff1696f4fbJan Kratochvil *tid_was_stoppedp = linux_proc_pid_is_stopped (tid); 8010d7a39aa2a509c16edd205c94b365ff1696f4fbJan Kratochvil if (*tid_was_stoppedp) 810b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 820b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil /* Make sure there is a SIGSTOP signal pending even when the process is 830b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil already State: T (stopped). Older kernels might fail to generate 840b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil a SIGSTOP notification in that case in response to our PTRACE_ATTACH 850b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil above. Which would make the waitpid below wait forever. So emulate 860b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil it. Since there can only be one SIGSTOP notification pending this is 870b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil safe. See also gdb/linux-nat.c linux_nat_post_attach_wait. */ 880b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil syscall (__NR_tkill, tid, SIGSTOP); 890b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil ptrace (PTRACE_CONT, tid, NULL, NULL); 900b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 910b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil for (;;) 920b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 930b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil int status; 940b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (waitpid (tid, &status, __WALL) != tid || !WIFSTOPPED (status)) 950b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 960b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil int saved_errno = errno; 970b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil ptrace (PTRACE_DETACH, tid, NULL, NULL); 980b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil errno = saved_errno; 990b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil __libdwfl_seterrno (DWFL_E_ERRNO); 1000b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return false; 1010b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1020b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (WSTOPSIG (status) == SIGSTOP) 1030b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil break; 1040b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (ptrace (PTRACE_CONT, tid, NULL, 1050b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil (void *) (uintptr_t) WSTOPSIG (status)) != 0) 1060b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 1070b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil int saved_errno = errno; 1080b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil ptrace (PTRACE_DETACH, tid, NULL, NULL); 1090b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil errno = saved_errno; 1100b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil __libdwfl_seterrno (DWFL_E_ERRNO); 1110b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return false; 1120b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1130b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1140b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return true; 1150b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 1160b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 1170b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilstatic bool 1180b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilpid_memory_read (Dwfl *dwfl, Dwarf_Addr addr, Dwarf_Word *result, void *arg) 1190b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 1204b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard struct __libdwfl_pid_arg *pid_arg = arg; 1210b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_t tid = pid_arg->tid_attached; 1220b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil assert (tid > 0); 1230b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil Dwfl_Process *process = dwfl->process; 1240b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (ebl_get_elfclass (process->ebl) == ELFCLASS64) 1250b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 1260b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#if SIZEOF_LONG == 8 1270b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil errno = 0; 1280b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil *result = ptrace (PTRACE_PEEKDATA, tid, (void *) (uintptr_t) addr, NULL); 1290b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return errno == 0; 1300b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#else /* SIZEOF_LONG != 8 */ 1310b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil /* This should not happen. */ 1320b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return false; 1330b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#endif /* SIZEOF_LONG != 8 */ 1340b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1350b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#if SIZEOF_LONG == 8 1360b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil /* We do not care about reads unaliged to 4 bytes boundary. 1370b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil But 0x...ffc read of 8 bytes could overrun a page. */ 1380b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil bool lowered = (addr & 4) != 0; 1390b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (lowered) 1400b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil addr -= 4; 1410b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#endif /* SIZEOF_LONG == 8 */ 1420b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil errno = 0; 1430b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil *result = ptrace (PTRACE_PEEKDATA, tid, (void *) (uintptr_t) addr, NULL); 1440b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (errno != 0) 1450b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return false; 1460b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#if SIZEOF_LONG == 8 1470b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil# if BYTE_ORDER == BIG_ENDIAN 1480b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (! lowered) 1490b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil *result >>= 32; 1500b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil# else 1510b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (lowered) 1520b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil *result >>= 32; 1530b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil# endif 1540b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil#endif /* SIZEOF_LONG == 8 */ 1550b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil *result &= 0xffffffff; 1560b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return true; 1570b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 1580b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 1590b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilstatic pid_t 1600b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilpid_next_thread (Dwfl *dwfl __attribute__ ((unused)), void *dwfl_arg, 1610b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil void **thread_argp) 1620b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 1634b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard struct __libdwfl_pid_arg *pid_arg = dwfl_arg; 1640b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil struct dirent *dirent; 165c76b2ff3eebc04c628ea7475c7ea0abb6cf0ff0dMark Wielaard /* Start fresh on first traversal. */ 166c76b2ff3eebc04c628ea7475c7ea0abb6cf0ff0dMark Wielaard if (*thread_argp == NULL) 167c76b2ff3eebc04c628ea7475c7ea0abb6cf0ff0dMark Wielaard rewinddir (pid_arg->dir); 1680b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil do 1690b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 1700b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil errno = 0; 1710b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil dirent = readdir (pid_arg->dir); 1720b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (dirent == NULL) 1730b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 1740b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (errno != 0) 1750b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 1760b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil __libdwfl_seterrno (DWFL_E_ERRNO); 1770b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return -1; 1780b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1790b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return 0; 1800b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1810b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1820b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil while (strcmp (dirent->d_name, ".") == 0 1830b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil || strcmp (dirent->d_name, "..") == 0); 1840b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil char *end; 1850b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil errno = 0; 1860b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil long tidl = strtol (dirent->d_name, &end, 10); 1870b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (errno != 0) 1880b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 1890b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil __libdwfl_seterrno (DWFL_E_ERRNO); 1900b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return -1; 1910b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1920b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_t tid = tidl; 1930b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (tidl <= 0 || (end && *end) || tid != tidl) 1940b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 1950b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil __libdwfl_seterrno (DWFL_E_PARSE_PROC); 1960b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return -1; 1970b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 1980b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil *thread_argp = dwfl_arg; 1990b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return tid; 2000b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 2010b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 202e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard/* Just checks that the thread id exists. */ 203e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaardstatic bool 204e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaardpid_getthread (Dwfl *dwfl __attribute__ ((unused)), pid_t tid, 205e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard void *dwfl_arg, void **thread_argp) 206e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard{ 207e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard *thread_argp = dwfl_arg; 208e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard if (kill (tid, 0) < 0) 209e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard { 210e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard __libdwfl_seterrno (DWFL_E_ERRNO); 211e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard return false; 212e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard } 213e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard return true; 214e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard} 215e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard 2160b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil/* Implement the ebl_set_initial_registers_tid setfunc callback. */ 2170b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 2180b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilstatic bool 2191c1a53b657ef31b168928925884c01a7e4bcaf0cJan Kratochvilpid_thread_state_registers_cb (int firstreg, unsigned nregs, 2201c1a53b657ef31b168928925884c01a7e4bcaf0cJan Kratochvil const Dwarf_Word *regs, void *arg) 2210b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 2220b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil Dwfl_Thread *thread = (Dwfl_Thread *) arg; 2235cbf42aaf47195e2c41171786371d55b253a7667Jan Kratochvil if (firstreg < 0) 2245cbf42aaf47195e2c41171786371d55b253a7667Jan Kratochvil { 2255cbf42aaf47195e2c41171786371d55b253a7667Jan Kratochvil assert (firstreg == -1); 2265cbf42aaf47195e2c41171786371d55b253a7667Jan Kratochvil assert (nregs == 1); 2275cbf42aaf47195e2c41171786371d55b253a7667Jan Kratochvil INTUSE(dwfl_thread_state_register_pc) (thread, *regs); 2285cbf42aaf47195e2c41171786371d55b253a7667Jan Kratochvil return true; 2295cbf42aaf47195e2c41171786371d55b253a7667Jan Kratochvil } 2305cbf42aaf47195e2c41171786371d55b253a7667Jan Kratochvil assert (nregs > 0); 2310b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return INTUSE(dwfl_thread_state_registers) (thread, firstreg, nregs, regs); 2320b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 2330b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 2340b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilstatic bool 2350b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilpid_set_initial_registers (Dwfl_Thread *thread, void *thread_arg) 2360b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 2374b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard struct __libdwfl_pid_arg *pid_arg = thread_arg; 2380b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil assert (pid_arg->tid_attached == 0); 2390b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_t tid = INTUSE(dwfl_thread_tid) (thread); 24019108019192ab273c53ae324be448d29dac806caMark Wielaard if (! pid_arg->assume_ptrace_stopped 2414b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard && ! __libdwfl_ptrace_attach (tid, &pid_arg->tid_was_stopped)) 2420b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return false; 2430b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_arg->tid_attached = tid; 2440b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil Dwfl_Process *process = thread->process; 2450b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil Ebl *ebl = process->ebl; 2460b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil return ebl_set_initial_registers_tid (ebl, tid, 2470b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_thread_state_registers_cb, thread); 2480b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 2490b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 2500b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilstatic void 2510b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilpid_detach (Dwfl *dwfl __attribute__ ((unused)), void *dwfl_arg) 2520b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 2534b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard struct __libdwfl_pid_arg *pid_arg = dwfl_arg; 254879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard elf_end (pid_arg->elf); 255879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard close (pid_arg->elf_fd); 2560b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil closedir (pid_arg->dir); 2570b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil free (pid_arg); 2580b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 2590b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 2604b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaardvoid 2614b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaardinternal_function 2624b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard__libdwfl_ptrace_detach (pid_t tid, bool tid_was_stopped) 2634b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard{ 2644b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard /* This handling is needed only on older Linux kernels such as 2654b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard 2.6.32-358.23.2.el6.ppc64. Later kernels such as 2664b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard 3.11.7-200.fc19.x86_64 remember the T (stopped) state 2674b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard themselves and no longer need to pass SIGSTOP during 2684b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard PTRACE_DETACH. */ 2694b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard ptrace (PTRACE_DETACH, tid, NULL, 2704b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard (void *) (intptr_t) (tid_was_stopped ? SIGSTOP : 0)); 2714b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard} 2724b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard 2730b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilstatic void 2740b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilpid_thread_detach (Dwfl_Thread *thread, void *thread_arg) 2750b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 2764b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard struct __libdwfl_pid_arg *pid_arg = thread_arg; 2770b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_t tid = INTUSE(dwfl_thread_tid) (thread); 2780b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil assert (pid_arg->tid_attached == tid); 2790b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_arg->tid_attached = 0; 28019108019192ab273c53ae324be448d29dac806caMark Wielaard if (! pid_arg->assume_ptrace_stopped) 2814b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard __libdwfl_ptrace_detach (tid, pid_arg->tid_was_stopped); 2820b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 2830b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 2840b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvilstatic const Dwfl_Thread_Callbacks pid_thread_callbacks = 2850b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 2860b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_next_thread, 287e962ec3bcbe8eccdcded36aaafee7bec41fa1bc4Mark Wielaard pid_getthread, 2880b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_memory_read, 2890b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_set_initial_registers, 2900b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_detach, 2910b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_thread_detach, 2920b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil}; 2930b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil 29419108019192ab273c53ae324be448d29dac806caMark Wielaardint 29519108019192ab273c53ae324be448d29dac806caMark Wielaarddwfl_linux_proc_attach (Dwfl *dwfl, pid_t pid, bool assume_ptrace_stopped) 2960b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil{ 29797bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard char buffer[36]; 29897bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard FILE *procfile; 29914beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard int err = 0; /* The errno to return and set for dwfl->attcherr. */ 30097bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard 30197bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard /* Make sure to report the actual PID (thread group leader) to 30297bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard dwfl_attach_state. */ 30397bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard snprintf (buffer, sizeof (buffer), "/proc/%ld/status", (long) pid); 30497bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard procfile = fopen (buffer, "r"); 30597bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard if (procfile == NULL) 30614beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard { 30714beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard err = errno; 30814beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard fail: 30914beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard if (dwfl->process == NULL && dwfl->attacherr == DWFL_E_NOERROR) 31014beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard { 31114beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard errno = err; 31214beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard dwfl->attacherr = __libdwfl_canon_error (DWFL_E_ERRNO); 31314beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard } 31414beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard return err; 31514beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard } 31697bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard 31797bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard char *line = NULL; 31897bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard size_t linelen = 0; 31997bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard while (getline (&line, &linelen, procfile) >= 0) 32097bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard if (strncmp (line, "Tgid:", 5) == 0) 32197bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard { 32268de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard errno = 0; 32368de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard char *endptr; 32468de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard long val = strtol (&line[5], &endptr, 10); 32568de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard if ((errno == ERANGE && val == LONG_MAX) 32668de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard || *endptr != '\n' || val < 0 || val != (pid_t) val) 32768de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard pid = 0; 32868de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard else 32968de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard pid = (pid_t) val; 33068de442d13f7b3192d0b81634c0f2136002c4552Mark Wielaard break; 33197bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard } 33297bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard free (line); 33397bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard fclose (procfile); 33497bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard 33597bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard if (pid == 0) 33614beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard { 33714beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard err = ESRCH; 33814beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard goto fail; 33914beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard } 34097bbf9b7ca002aab236bf750aba699d81f7985f7Mark Wielaard 341879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard char name[64]; 342879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard int i = snprintf (name, sizeof (name), "/proc/%ld/task", (long) pid); 343879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard assert (i > 0 && i < (ssize_t) sizeof (name) - 1); 344879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard DIR *dir = opendir (name); 3450b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (dir == NULL) 34614beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard { 34714beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard err = errno; 34814beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard goto fail; 34914beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard } 350879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard 351879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard Elf *elf; 352879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard i = snprintf (name, sizeof (name), "/proc/%ld/exe", (long) pid); 353879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard assert (i > 0 && i < (ssize_t) sizeof (name) - 1); 354879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard int elf_fd = open (name, O_RDONLY); 355879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard if (elf_fd >= 0) 356879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard { 357879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard elf = elf_begin (elf_fd, ELF_C_READ_MMAP, NULL); 358879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard if (elf == NULL) 359879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard { 360879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard /* Just ignore, dwfl_attach_state will fall back to trying 361879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard to associate the Dwfl with one of the existing DWfl_Module 362879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard ELF images (to know the machine/class backend to use). */ 363879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard close (elf_fd); 364879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard elf_fd = -1; 365879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard } 366879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard } 367879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard else 368879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard elf = NULL; 3694b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard struct __libdwfl_pid_arg *pid_arg = malloc (sizeof *pid_arg); 3700b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil if (pid_arg == NULL) 3710b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 372879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard elf_end (elf); 373879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard close (elf_fd); 3740b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil closedir (dir); 37514beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard err = ENOMEM; 37614beac3b6f22b8d7a054980f74c4f8d33b969fc4Mark Wielaard goto fail; 3770b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 3780b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_arg->dir = dir; 379879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard pid_arg->elf = elf; 380879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard pid_arg->elf_fd = elf_fd; 3810b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_arg->tid_attached = 0; 38219108019192ab273c53ae324be448d29dac806caMark Wielaard pid_arg->assume_ptrace_stopped = assume_ptrace_stopped; 383879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard if (! INTUSE(dwfl_attach_state) (dwfl, elf, pid, &pid_thread_callbacks, 3840b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil pid_arg)) 3850b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil { 386879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard elf_end (elf); 387879850950bd56255cb5796c86b62bf3bdedd4fb9Mark Wielaard close (elf_fd); 3880b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil closedir (dir); 3890b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil free (pid_arg); 39019108019192ab273c53ae324be448d29dac806caMark Wielaard return -1; 3910b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil } 39219108019192ab273c53ae324be448d29dac806caMark Wielaard return 0; 3930b867460075c9f02cb305abc91a0e12b90017583Jan Kratochvil} 39419108019192ab273c53ae324be448d29dac806caMark WielaardINTDEF (dwfl_linux_proc_attach) 3954b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard 3964b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaardstruct __libdwfl_pid_arg * 3974b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaardinternal_function 3984b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard__libdwfl_get_pid_arg (Dwfl *dwfl) 3994b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard{ 4004b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard if (dwfl != NULL && dwfl->process != NULL 4014b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard && dwfl->process->callbacks == &pid_thread_callbacks) 4024b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard return (struct __libdwfl_pid_arg *) dwfl->process->callbacks_arg; 4034b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard 4044b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard return NULL; 4054b9e1433d2272f5f68b3227abdd9cf6817a0afd3Mark Wielaard} 40602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 40702cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx#else /* __linux__ */ 40802cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 40902cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxstatic pid_t 41002cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxpid_next_thread (Dwfl *dwfl __attribute__ ((unused)), 41102cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx void *dwfl_arg __attribute__ ((unused)), 41202cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx void **thread_argp __attribute__ ((unused))) 41302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 41402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx errno = ENOSYS; 41502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx __libdwfl_seterrno (DWFL_E_ERRNO); 41602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx return -1; 41702cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx} 41802cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 41902cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxstatic bool 42002cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxpid_getthread (Dwfl *dwfl __attribute__ ((unused)), 42102cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx pid_t tid __attribute__ ((unused)), 42202cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx void *dwfl_arg __attribute__ ((unused)), 42302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx void **thread_argp __attribute__ ((unused))) 42402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 42502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx errno = ENOSYS; 42602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx __libdwfl_seterrno (DWFL_E_ERRNO); 42702cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx return false; 42802cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx} 42902cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 430a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckxbool 431a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckxinternal_function 432a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx__libdwfl_ptrace_attach (pid_t tid __attribute__ ((unused)), 433a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx bool *tid_was_stoppedp __attribute__ ((unused))) 434a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx{ 435a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx errno = ENOSYS; 436a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx __libdwfl_seterrno (DWFL_E_ERRNO); 437a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx return false; 438a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx} 439a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx 44002cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxstatic bool 44102cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxpid_memory_read (Dwfl *dwfl __attribute__ ((unused)), 44202cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx Dwarf_Addr addr __attribute__ ((unused)), 44302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx Dwarf_Word *result __attribute__ ((unused)), 44402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx void *arg __attribute__ ((unused))) 44502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 44602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx errno = ENOSYS; 44702cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx __libdwfl_seterrno (DWFL_E_ERRNO); 44802cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx return false; 44902cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx} 45002cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 45102cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxstatic bool 45202cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxpid_set_initial_registers (Dwfl_Thread *thread __attribute__ ((unused)), 45302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx void *thread_arg __attribute__ ((unused))) 45402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 45502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx errno = ENOSYS; 45602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx __libdwfl_seterrno (DWFL_E_ERRNO); 45702cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx return false; 45802cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx} 45902cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 46002cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxstatic void 46102cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxpid_detach (Dwfl *dwfl __attribute__ ((unused)), 46202cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx void *dwfl_arg __attribute__ ((unused))) 46302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 46402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx} 46502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 466a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckxvoid 467a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckxinternal_function 468a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx__libdwfl_ptrace_detach (pid_t tid __attribute__ ((unused)), 469a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx bool tid_was_stopped __attribute__ ((unused))) 470a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx{ 471a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx} 472a7a385547bbcc6e5fc15935b99ce0136126f1908Kurt Roeckx 47302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxstatic void 47402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxpid_thread_detach (Dwfl_Thread *thread __attribute__ ((unused)), 47502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx void *thread_arg __attribute__ ((unused))) 47602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 47702cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx} 47802cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 47902cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxstatic const Dwfl_Thread_Callbacks pid_thread_callbacks = 48002cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 48102cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx pid_next_thread, 48202cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx pid_getthread, 48302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx pid_memory_read, 48402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx pid_set_initial_registers, 48502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx pid_detach, 48602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx pid_thread_detach, 48702cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx}; 48802cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 48902cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxint 49002cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxdwfl_linux_proc_attach (Dwfl *dwfl __attribute__ ((unused)), 49102cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx pid_t pid __attribute__ ((unused)), 49202cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx bool assume_ptrace_stopped __attribute__ ((unused))) 49302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 49402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx return ENOSYS; 49502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx} 49602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt RoeckxINTDEF (dwfl_linux_proc_attach) 49702cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 49802cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxstruct __libdwfl_pid_arg * 49902cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckxinternal_function 50002cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx__libdwfl_get_pid_arg (Dwfl *dwfl __attribute__ ((unused))) 50102cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx{ 50202cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx return NULL; 50302cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx} 50402cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 50502cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx#endif /* ! __linux __ */ 50602cefdaa6429e620d6457fdb3ad9934f194c5a93Kurt Roeckx 507