| /* Low level interface for debugging Solaris threads for GDB, the GNU debugger. |
| Copyright 1996, 1997, 1998 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* This module implements a sort of half target that sits between the |
| machine-independent parts of GDB and the /proc interface (procfs.c) to |
| provide access to the Solaris user-mode thread implementation. |
| |
| Solaris threads are true user-mode threads, which are invoked via the thr_* |
| and pthread_* (native and Posix respectivly) interfaces. These are mostly |
| implemented in user-space, with all thread context kept in various |
| structures that live in the user's heap. These should not be confused with |
| lightweight processes (LWPs), which are implemented by the kernel, and |
| scheduled without explicit intervention by the process. |
| |
| Just to confuse things a little, Solaris threads (both native and Posix) are |
| actually implemented using LWPs. In general, there are going to be more |
| threads than LWPs. There is no fixed correspondence between a thread and an |
| LWP. When a thread wants to run, it gets scheduled onto the first available |
| LWP and can therefore migrate from one LWP to another as time goes on. A |
| sleeping thread may not be associated with an LWP at all! |
| |
| To make it possible to mess with threads, Sun provides a library called |
| libthread_db.so.1 (not to be confused with libthread_db.so.0, which doesn't |
| have a published interface). This interface has an upper part, which it |
| provides, and a lower part which I provide. The upper part consists of the |
| td_* routines, which allow me to find all the threads, query their state, |
| etc... The lower part consists of all of the ps_*, which are used by the |
| td_* routines to read/write memory, manipulate LWPs, lookup symbols, etc... |
| The ps_* routines actually do most of their work by calling functions in |
| procfs.c. */ |
| |
| #include "defs.h" |
| #include <thread.h> |
| #include <proc_service.h> |
| #include <thread_db.h> |
| #include "gdbthread.h" |
| #include "target.h" |
| #include "inferior.h" |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <dlfcn.h> |
| #include "gdbcmd.h" |
| |
| extern struct target_ops sol_thread_ops; /* Forward declaration */ |
| extern struct target_ops sol_core_ops; /* Forward declaration */ |
| |
| /* place to store core_ops before we overwrite it */ |
| static struct target_ops orig_core_ops; |
| |
| struct target_ops sol_thread_ops; |
| struct target_ops sol_core_ops; |
| |
| extern int procfs_suppress_run; |
| extern struct target_ops procfs_ops; /* target vector for procfs.c */ |
| extern struct target_ops core_ops; /* target vector for corelow.c */ |
| extern char *procfs_pid_to_str PARAMS ((int pid)); |
| |
| /* Note that these prototypes differ slightly from those used in procfs.c |
| for of two reasons. One, we can't use gregset_t, as that's got a whole |
| different meaning under Solaris (also, see above). Two, we can't use the |
| pointer form here as these are actually arrays of ints (for Sparc's at |
| least), and are automatically coerced into pointers to ints when used as |
| parameters. That makes it impossible to avoid a compiler warning when |
| passing pr{g fp}regset_t's from a parameter to an argument of one of |
| these functions. */ |
| |
| extern void supply_gregset PARAMS ((const prgregset_t)); |
| extern void fill_gregset PARAMS ((prgregset_t, int)); |
| extern void supply_fpregset PARAMS ((const prfpregset_t *)); |
| extern void fill_fpregset PARAMS ((prfpregset_t *, int)); |
| |
| /* This struct is defined by us, but mainly used for the proc_service interface. |
| We don't have much use for it, except as a handy place to get a real pid |
| for memory accesses. */ |
| |
| struct ps_prochandle |
| { |
| pid_t pid; |
| }; |
| |
| struct string_map |
| { |
| int num; |
| char *str; |
| }; |
| |
| static struct ps_prochandle main_ph; |
| static td_thragent_t *main_ta; |
| static int sol_thread_active = 0; |
| |
| static struct cleanup *save_inferior_pid PARAMS ((void)); |
| static void restore_inferior_pid PARAMS ((void *pid)); |
| static char *td_err_string PARAMS ((td_err_e errcode)); |
| static char *td_state_string PARAMS ((td_thr_state_e statecode)); |
| static int thread_to_lwp PARAMS ((int thread_id, int default_lwp)); |
| static void sol_thread_resume PARAMS ((int pid, int step, |
| enum target_signal signo)); |
| static int lwp_to_thread PARAMS ((int lwp)); |
| static int sol_thread_alive PARAMS ((int pid)); |
| static void sol_core_close PARAMS ((int quitting)); |
| |
| static void init_sol_thread_ops PARAMS ((void)); |
| static void init_sol_core_ops PARAMS ((void)); |
| |
| /* Default definitions: These must be defined in tm.h |
| if they are to be shared with a process module such as procfs. */ |
| |
| #define THREAD_FLAG 0x80000000 |
| #define is_thread(ARG) (((ARG) & THREAD_FLAG) != 0) |
| #define is_lwp(ARG) (((ARG) & THREAD_FLAG) == 0) |
| #define GET_LWP(PID) TIDGET (PID) |
| #define GET_THREAD(PID) (((PID) >> 16) & 0x7fff) |
| #define BUILD_LWP(TID, PID) ((TID) << 16 | (PID)) |
| |
| #define BUILD_THREAD(THREAD_ID, PID) (THREAD_FLAG | BUILD_LWP (THREAD_ID, PID)) |
| |
| /* Pointers to routines from lithread_db resolved by dlopen() */ |
| |
| static void |
| (*p_td_log) (const int on_off); |
| static td_err_e |
| (*p_td_ta_new) (const struct ps_prochandle * ph_p, td_thragent_t ** ta_pp); |
| static td_err_e |
| (*p_td_ta_delete) (td_thragent_t * ta_p); |
| static td_err_e |
| (*p_td_init) (void); |
| static td_err_e |
| (*p_td_ta_get_ph) (const td_thragent_t * ta_p, struct ps_prochandle ** ph_pp); |
| static td_err_e |
| (*p_td_ta_get_nthreads) (const td_thragent_t * ta_p, int *nthread_p); |
| static td_err_e |
| (*p_td_ta_tsd_iter) (const td_thragent_t * ta_p, td_key_iter_f * cb, void *cbdata_p); |
| static td_err_e |
| (*p_td_ta_thr_iter) (const td_thragent_t * ta_p, td_thr_iter_f * cb, void *cbdata_p, td_thr_state_e state, |
| int ti_pri, sigset_t * ti_sigmask_p, unsigned ti_user_flags); |
| static td_err_e |
| (*p_td_thr_validate) (const td_thrhandle_t * th_p); |
| static td_err_e |
| (*p_td_thr_tsd) (const td_thrhandle_t * th_p, const thread_key_t key, void **data_pp); |
| static td_err_e |
| (*p_td_thr_get_info) (const td_thrhandle_t * th_p, td_thrinfo_t * ti_p); |
| static td_err_e |
| (*p_td_thr_getfpregs) (const td_thrhandle_t * th_p, prfpregset_t * fpregset); |
| static td_err_e |
| (*p_td_thr_getxregsize) (const td_thrhandle_t * th_p, int *xregsize); |
| static td_err_e |
| (*p_td_thr_getxregs) (const td_thrhandle_t * th_p, const caddr_t xregset); |
| static td_err_e |
| (*p_td_thr_sigsetmask) (const td_thrhandle_t * th_p, const sigset_t ti_sigmask); |
| static td_err_e |
| (*p_td_thr_setprio) (const td_thrhandle_t * th_p, const int ti_pri); |
| static td_err_e |
| (*p_td_thr_setsigpending) (const td_thrhandle_t * th_p, const uchar_t ti_pending_flag, const sigset_t ti_pending); |
| static td_err_e |
| (*p_td_thr_setfpregs) (const td_thrhandle_t * th_p, const prfpregset_t * fpregset); |
| static td_err_e |
| (*p_td_thr_setxregs) (const td_thrhandle_t * th_p, const caddr_t xregset); |
| static td_err_e |
| (*p_td_ta_map_id2thr) (const td_thragent_t * ta_p, thread_t tid, td_thrhandle_t * th_p); |
| static td_err_e |
| (*p_td_ta_map_lwp2thr) (const td_thragent_t * ta_p, lwpid_t lwpid, td_thrhandle_t * th_p); |
| static td_err_e |
| (*p_td_thr_getgregs) (const td_thrhandle_t * th_p, prgregset_t regset); |
| static td_err_e |
| (*p_td_thr_setgregs) (const td_thrhandle_t * th_p, const prgregset_t regset); |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| td_err_string - Convert a thread_db error code to a string |
| |
| SYNOPSIS |
| |
| char * td_err_string (errcode) |
| |
| DESCRIPTION |
| |
| Return the thread_db error string associated with errcode. If errcode |
| is unknown, then return a message. |
| |
| */ |
| |
| static char * |
| td_err_string (errcode) |
| td_err_e errcode; |
| { |
| static struct string_map |
| td_err_table[] = |
| { |
| {TD_OK, "generic \"call succeeded\""}, |
| {TD_ERR, "generic error."}, |
| {TD_NOTHR, "no thread can be found to satisfy query"}, |
| {TD_NOSV, "no synch. variable can be found to satisfy query"}, |
| {TD_NOLWP, "no lwp can be found to satisfy query"}, |
| {TD_BADPH, "invalid process handle"}, |
| {TD_BADTH, "invalid thread handle"}, |
| {TD_BADSH, "invalid synchronization handle"}, |
| {TD_BADTA, "invalid thread agent"}, |
| {TD_BADKEY, "invalid key"}, |
| {TD_NOMSG, "td_thr_event_getmsg() called when there was no message"}, |
| {TD_NOFPREGS, "FPU register set not available for given thread"}, |
| {TD_NOLIBTHREAD, "application not linked with libthread"}, |
| {TD_NOEVENT, "requested event is not supported"}, |
| {TD_NOCAPAB, "capability not available"}, |
| {TD_DBERR, "Debugger service failed"}, |
| {TD_NOAPLIC, "Operation not applicable to"}, |
| {TD_NOTSD, "No thread specific data for this thread"}, |
| {TD_MALLOC, "Malloc failed"}, |
| {TD_PARTIALREG, "Only part of register set was writen/read"}, |
| {TD_NOXREGS, "X register set not available for given thread"} |
| }; |
| const int td_err_size = sizeof td_err_table / sizeof (struct string_map); |
| int i; |
| static char buf[50]; |
| |
| for (i = 0; i < td_err_size; i++) |
| if (td_err_table[i].num == errcode) |
| return td_err_table[i].str; |
| |
| sprintf (buf, "Unknown thread_db error code: %d", errcode); |
| |
| return buf; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| td_state_string - Convert a thread_db state code to a string |
| |
| SYNOPSIS |
| |
| char * td_state_string (statecode) |
| |
| DESCRIPTION |
| |
| Return the thread_db state string associated with statecode. If |
| statecode is unknown, then return a message. |
| |
| */ |
| |
| static char * |
| td_state_string (statecode) |
| td_thr_state_e statecode; |
| { |
| static struct string_map |
| td_thr_state_table[] = |
| { |
| {TD_THR_ANY_STATE, "any state"}, |
| {TD_THR_UNKNOWN, "unknown"}, |
| {TD_THR_STOPPED, "stopped"}, |
| {TD_THR_RUN, "run"}, |
| {TD_THR_ACTIVE, "active"}, |
| {TD_THR_ZOMBIE, "zombie"}, |
| {TD_THR_SLEEP, "sleep"}, |
| {TD_THR_STOPPED_ASLEEP, "stopped asleep"} |
| }; |
| const int td_thr_state_table_size = sizeof td_thr_state_table / sizeof (struct string_map); |
| int i; |
| static char buf[50]; |
| |
| for (i = 0; i < td_thr_state_table_size; i++) |
| if (td_thr_state_table[i].num == statecode) |
| return td_thr_state_table[i].str; |
| |
| sprintf (buf, "Unknown thread_db state code: %d", statecode); |
| |
| return buf; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| thread_to_lwp - Convert a Posix or Solaris thread id to a LWP id. |
| |
| SYNOPSIS |
| |
| int thread_to_lwp (thread_id, default_lwp) |
| |
| DESCRIPTION |
| |
| This function converts a Posix or Solaris thread id to a lightweight |
| process id. If thread_id is non-existent, that's an error. If it's |
| an inactive thread, then we return default_lwp. |
| |
| NOTES |
| |
| This function probably shouldn't call error()... |
| |
| */ |
| |
| static int |
| thread_to_lwp (thread_id, default_lwp) |
| int thread_id; |
| int default_lwp; |
| { |
| td_thrinfo_t ti; |
| td_thrhandle_t th; |
| td_err_e val; |
| |
| if (is_lwp (thread_id)) |
| return thread_id; /* It's already an LWP id */ |
| |
| /* It's a thread. Convert to lwp */ |
| |
| val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th); |
| if (val == TD_NOTHR) |
| return -1; /* thread must have terminated */ |
| else if (val != TD_OK) |
| error ("thread_to_lwp: td_ta_map_id2thr %s", td_err_string (val)); |
| |
| val = p_td_thr_get_info (&th, &ti); |
| if (val == TD_NOTHR) |
| return -1; /* thread must have terminated */ |
| else if (val != TD_OK) |
| error ("thread_to_lwp: td_thr_get_info: %s", td_err_string (val)); |
| |
| if (ti.ti_state != TD_THR_ACTIVE) |
| { |
| if (default_lwp != -1) |
| return default_lwp; |
| error ("thread_to_lwp: thread state not active: %s", |
| td_state_string (ti.ti_state)); |
| } |
| |
| return BUILD_LWP (ti.ti_lid, PIDGET (thread_id)); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| lwp_to_thread - Convert a LWP id to a Posix or Solaris thread id. |
| |
| SYNOPSIS |
| |
| int lwp_to_thread (lwp_id) |
| |
| DESCRIPTION |
| |
| This function converts a lightweight process id to a Posix or Solaris |
| thread id. If thread_id is non-existent, that's an error. |
| |
| NOTES |
| |
| This function probably shouldn't call error()... |
| |
| */ |
| |
| static int |
| lwp_to_thread (lwp) |
| int lwp; |
| { |
| td_thrinfo_t ti; |
| td_thrhandle_t th; |
| td_err_e val; |
| |
| if (is_thread (lwp)) |
| return lwp; /* It's already a thread id */ |
| |
| /* It's an lwp. Convert it to a thread id. */ |
| |
| if (!sol_thread_alive (lwp)) |
| return -1; /* defunct lwp */ |
| |
| val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th); |
| if (val == TD_NOTHR) |
| return -1; /* thread must have terminated */ |
| else if (val != TD_OK) |
| error ("lwp_to_thread: td_ta_map_lwp2thr: %s.", td_err_string (val)); |
| |
| val = p_td_thr_validate (&th); |
| if (val == TD_NOTHR) |
| return lwp; /* libthread doesn't know about it, just return lwp */ |
| else if (val != TD_OK) |
| error ("lwp_to_thread: td_thr_validate: %s.", td_err_string (val)); |
| |
| val = p_td_thr_get_info (&th, &ti); |
| if (val == TD_NOTHR) |
| return -1; /* thread must have terminated */ |
| else if (val != TD_OK) |
| error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val)); |
| |
| return BUILD_THREAD (ti.ti_tid, PIDGET (lwp)); |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| save_inferior_pid - Save inferior_pid on the cleanup list |
| restore_inferior_pid - Restore inferior_pid from the cleanup list |
| |
| SYNOPSIS |
| |
| struct cleanup *save_inferior_pid () |
| void restore_inferior_pid (int pid) |
| |
| DESCRIPTION |
| |
| These two functions act in unison to restore inferior_pid in |
| case of an error. |
| |
| NOTES |
| |
| inferior_pid is a global variable that needs to be changed by many of |
| these routines before calling functions in procfs.c. In order to |
| guarantee that inferior_pid gets restored (in case of errors), you |
| need to call save_inferior_pid before changing it. At the end of the |
| function, you should invoke do_cleanups to restore it. |
| |
| */ |
| |
| |
| static struct cleanup * |
| save_inferior_pid () |
| { |
| return make_cleanup (restore_inferior_pid, (void *) inferior_pid); |
| } |
| |
| static void |
| restore_inferior_pid (pid) |
| void *pid; |
| { |
| inferior_pid = (int) pid; |
| } |
| |
| |
| /* Most target vector functions from here on actually just pass through to |
| procfs.c, as they don't need to do anything specific for threads. */ |
| |
| |
| /* ARGSUSED */ |
| static void |
| sol_thread_open (arg, from_tty) |
| char *arg; |
| int from_tty; |
| { |
| procfs_ops.to_open (arg, from_tty); |
| } |
| |
| /* Attach to process PID, then initialize for debugging it |
| and wait for the trace-trap that results from attaching. */ |
| |
| static void |
| sol_thread_attach (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| procfs_ops.to_attach (args, from_tty); |
| /* Must get symbols from solibs before libthread_db can run! */ |
| SOLIB_ADD ((char *) 0, from_tty, (struct target_ops *) 0); |
| if (sol_thread_active) |
| { |
| printf_filtered ("sol-thread active.\n"); |
| main_ph.pid = inferior_pid; /* Save for xfer_memory */ |
| push_target (&sol_thread_ops); |
| inferior_pid = lwp_to_thread (inferior_pid); |
| if (inferior_pid == -1) |
| inferior_pid = main_ph.pid; |
| else |
| add_thread (inferior_pid); |
| } |
| /* XXX - might want to iterate over all the threads and register them. */ |
| } |
| |
| /* Take a program previously attached to and detaches it. |
| The program resumes execution and will no longer stop |
| on signals, etc. We'd better not have left any breakpoints |
| in the program or it'll die when it hits one. For this |
| to work, it may be necessary for the process to have been |
| previously attached. It *might* work if the program was |
| started via the normal ptrace (PTRACE_TRACEME). */ |
| |
| static void |
| sol_thread_detach (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| inferior_pid = PIDGET (main_ph.pid); |
| unpush_target (&sol_thread_ops); |
| procfs_ops.to_detach (args, from_tty); |
| } |
| |
| /* Resume execution of process PID. If STEP is nozero, then |
| just single step it. If SIGNAL is nonzero, restart it with that |
| signal activated. We may have to convert pid from a thread-id to an LWP id |
| for procfs. */ |
| |
| static void |
| sol_thread_resume (pid, step, signo) |
| int pid; |
| int step; |
| enum target_signal signo; |
| { |
| struct cleanup *old_chain; |
| |
| old_chain = save_inferior_pid (); |
| |
| inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid); |
| if (inferior_pid == -1) |
| inferior_pid = procfs_first_available (); |
| |
| if (pid != -1) |
| { |
| int save_pid = pid; |
| |
| pid = thread_to_lwp (pid, -2); |
| if (pid == -2) /* Inactive thread */ |
| error ("This version of Solaris can't start inactive threads."); |
| if (info_verbose && pid == -1) |
| warning ("Specified thread %d seems to have terminated", |
| GET_THREAD (save_pid)); |
| } |
| |
| procfs_ops.to_resume (pid, step, signo); |
| |
| do_cleanups (old_chain); |
| } |
| |
| /* Wait for any threads to stop. We may have to convert PID from a thread id |
| to a LWP id, and vice versa on the way out. */ |
| |
| static int |
| sol_thread_wait (pid, ourstatus) |
| int pid; |
| struct target_waitstatus *ourstatus; |
| { |
| int rtnval; |
| int save_pid; |
| struct cleanup *old_chain; |
| |
| save_pid = inferior_pid; |
| old_chain = save_inferior_pid (); |
| |
| inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid); |
| if (inferior_pid == -1) |
| inferior_pid = procfs_first_available (); |
| |
| if (pid != -1) |
| { |
| int save_pid = pid; |
| |
| pid = thread_to_lwp (pid, -2); |
| if (pid == -2) /* Inactive thread */ |
| error ("This version of Solaris can't start inactive threads."); |
| if (info_verbose && pid == -1) |
| warning ("Specified thread %d seems to have terminated", |
| GET_THREAD (save_pid)); |
| } |
| |
| rtnval = procfs_ops.to_wait (pid, ourstatus); |
| |
| if (ourstatus->kind != TARGET_WAITKIND_EXITED) |
| { |
| /* Map the LWP of interest back to the appropriate thread ID */ |
| rtnval = lwp_to_thread (rtnval); |
| if (rtnval == -1) |
| rtnval = save_pid; |
| |
| /* See if we have a new thread */ |
| if (is_thread (rtnval) |
| && rtnval != save_pid |
| && !in_thread_list (rtnval)) |
| { |
| printf_filtered ("[New %s]\n", target_pid_to_str (rtnval)); |
| add_thread (rtnval); |
| } |
| } |
| |
| /* During process initialization, we may get here without the thread package |
| being initialized, since that can only happen after we've found the shared |
| libs. */ |
| |
| do_cleanups (old_chain); |
| |
| return rtnval; |
| } |
| |
| static void |
| sol_thread_fetch_registers (regno) |
| int regno; |
| { |
| thread_t thread; |
| td_thrhandle_t thandle; |
| td_err_e val; |
| prgregset_t gregset; |
| prfpregset_t fpregset; |
| #if 0 |
| int xregsize; |
| caddr_t xregset; |
| #endif |
| |
| if (!is_thread (inferior_pid)) |
| { /* LWP: pass the request on to procfs.c */ |
| if (target_has_execution) |
| procfs_ops.to_fetch_registers (regno); |
| else |
| orig_core_ops.to_fetch_registers (regno); |
| return; |
| } |
| |
| /* Solaris thread: convert inferior_pid into a td_thrhandle_t */ |
| |
| thread = GET_THREAD (inferior_pid); |
| |
| if (thread == 0) |
| error ("sol_thread_fetch_registers: thread == 0"); |
| |
| val = p_td_ta_map_id2thr (main_ta, thread, &thandle); |
| if (val != TD_OK) |
| error ("sol_thread_fetch_registers: td_ta_map_id2thr: %s", |
| td_err_string (val)); |
| |
| /* Get the integer regs */ |
| |
| val = p_td_thr_getgregs (&thandle, gregset); |
| if (val != TD_OK |
| && val != TD_PARTIALREG) |
| error ("sol_thread_fetch_registers: td_thr_getgregs %s", |
| td_err_string (val)); |
| |
| /* For the sparc, TD_PARTIALREG means that only i0->i7, l0->l7, pc and sp |
| are saved (by a thread context switch). */ |
| |
| /* And, now the fp regs */ |
| |
| val = p_td_thr_getfpregs (&thandle, &fpregset); |
| if (val != TD_OK |
| && val != TD_NOFPREGS) |
| error ("sol_thread_fetch_registers: td_thr_getfpregs %s", |
| td_err_string (val)); |
| |
| /* Note that we must call supply_{g fp}regset *after* calling the td routines |
| because the td routines call ps_lget* which affect the values stored in the |
| registers array. */ |
| |
| supply_gregset (gregset); |
| supply_fpregset (&fpregset); |
| |
| #if 0 |
| /* thread_db doesn't seem to handle this right */ |
| val = td_thr_getxregsize (&thandle, &xregsize); |
| if (val != TD_OK && val != TD_NOXREGS) |
| error ("sol_thread_fetch_registers: td_thr_getxregsize %s", |
| td_err_string (val)); |
| |
| if (val == TD_OK) |
| { |
| xregset = alloca (xregsize); |
| val = td_thr_getxregs (&thandle, xregset); |
| if (val != TD_OK) |
| error ("sol_thread_fetch_registers: td_thr_getxregs %s", |
| td_err_string (val)); |
| } |
| #endif |
| } |
| |
| static void |
| sol_thread_store_registers (regno) |
| int regno; |
| { |
| thread_t thread; |
| td_thrhandle_t thandle; |
| td_err_e val; |
| prgregset_t regset; |
| prfpregset_t fpregset; |
| #if 0 |
| int xregsize; |
| caddr_t xregset; |
| #endif |
| |
| if (!is_thread (inferior_pid)) |
| { /* LWP: pass the request on to procfs.c */ |
| procfs_ops.to_store_registers (regno); |
| return; |
| } |
| |
| /* Solaris thread: convert inferior_pid into a td_thrhandle_t */ |
| |
| thread = GET_THREAD (inferior_pid); |
| |
| val = p_td_ta_map_id2thr (main_ta, thread, &thandle); |
| if (val != TD_OK) |
| error ("sol_thread_store_registers: td_ta_map_id2thr %s", |
| td_err_string (val)); |
| |
| if (regno != -1) |
| { /* Not writing all the regs */ |
| /* save new register value */ |
| char old_value[REGISTER_SIZE]; |
| memcpy (old_value, ®isters[REGISTER_BYTE (regno)], REGISTER_SIZE); |
| |
| val = p_td_thr_getgregs (&thandle, regset); |
| if (val != TD_OK) |
| error ("sol_thread_store_registers: td_thr_getgregs %s", |
| td_err_string (val)); |
| val = p_td_thr_getfpregs (&thandle, &fpregset); |
| if (val != TD_OK) |
| error ("sol_thread_store_registers: td_thr_getfpregs %s", |
| td_err_string (val)); |
| |
| /* restore new register value */ |
| memcpy (®isters[REGISTER_BYTE (regno)], old_value, REGISTER_SIZE); |
| |
| #if 0 |
| /* thread_db doesn't seem to handle this right */ |
| val = td_thr_getxregsize (&thandle, &xregsize); |
| if (val != TD_OK && val != TD_NOXREGS) |
| error ("sol_thread_store_registers: td_thr_getxregsize %s", |
| td_err_string (val)); |
| |
| if (val == TD_OK) |
| { |
| xregset = alloca (xregsize); |
| val = td_thr_getxregs (&thandle, xregset); |
| if (val != TD_OK) |
| error ("sol_thread_store_registers: td_thr_getxregs %s", |
| td_err_string (val)); |
| } |
| #endif |
| } |
| |
| fill_gregset (regset, regno); |
| fill_fpregset (&fpregset, regno); |
| |
| val = p_td_thr_setgregs (&thandle, regset); |
| if (val != TD_OK) |
| error ("sol_thread_store_registers: td_thr_setgregs %s", |
| td_err_string (val)); |
| val = p_td_thr_setfpregs (&thandle, &fpregset); |
| if (val != TD_OK) |
| error ("sol_thread_store_registers: td_thr_setfpregs %s", |
| td_err_string (val)); |
| |
| #if 0 |
| /* thread_db doesn't seem to handle this right */ |
| val = td_thr_getxregsize (&thandle, &xregsize); |
| if (val != TD_OK && val != TD_NOXREGS) |
| error ("sol_thread_store_registers: td_thr_getxregsize %s", |
| td_err_string (val)); |
| |
| /* Should probably do something about writing the xregs here, but what are |
| they? */ |
| #endif |
| } |
| |
| /* Get ready to modify the registers array. On machines which store |
| individual registers, this doesn't need to do anything. On machines |
| which store all the registers in one fell swoop, this makes sure |
| that registers contains all the registers from the program being |
| debugged. */ |
| |
| static void |
| sol_thread_prepare_to_store () |
| { |
| procfs_ops.to_prepare_to_store (); |
| } |
| |
| static int |
| sol_thread_xfer_memory (memaddr, myaddr, len, dowrite, target) |
| CORE_ADDR memaddr; |
| char *myaddr; |
| int len; |
| int dowrite; |
| struct target_ops *target; /* ignored */ |
| { |
| int retval; |
| struct cleanup *old_chain; |
| |
| old_chain = save_inferior_pid (); |
| |
| if (is_thread (inferior_pid) || /* A thread */ |
| !target_thread_alive (inferior_pid)) /* An lwp, but not alive */ |
| inferior_pid = procfs_first_available (); /* Find any live lwp. */ |
| /* Note: don't need to call switch_to_thread; we're just reading memory. */ |
| |
| if (target_has_execution) |
| retval = procfs_ops.to_xfer_memory (memaddr, myaddr, len, dowrite, target); |
| else |
| retval = orig_core_ops.to_xfer_memory (memaddr, myaddr, len, |
| dowrite, target); |
| |
| do_cleanups (old_chain); |
| |
| return retval; |
| } |
| |
| /* Print status information about what we're accessing. */ |
| |
| static void |
| sol_thread_files_info (ignore) |
| struct target_ops *ignore; |
| { |
| procfs_ops.to_files_info (ignore); |
| } |
| |
| static void |
| sol_thread_kill_inferior () |
| { |
| procfs_ops.to_kill (); |
| } |
| |
| static void |
| sol_thread_notice_signals (pid) |
| int pid; |
| { |
| procfs_ops.to_notice_signals (PIDGET (pid)); |
| } |
| |
| /* Fork an inferior process, and start debugging it with /proc. */ |
| |
| static void |
| sol_thread_create_inferior (exec_file, allargs, env) |
| char *exec_file; |
| char *allargs; |
| char **env; |
| { |
| procfs_ops.to_create_inferior (exec_file, allargs, env); |
| |
| if (sol_thread_active && inferior_pid != 0) |
| { |
| main_ph.pid = inferior_pid; /* Save for xfer_memory */ |
| |
| push_target (&sol_thread_ops); |
| |
| inferior_pid = lwp_to_thread (inferior_pid); |
| if (inferior_pid == -1) |
| inferior_pid = main_ph.pid; |
| |
| add_thread (inferior_pid); |
| } |
| } |
| |
| /* This routine is called whenever a new symbol table is read in, or when all |
| symbol tables are removed. libthread_db can only be initialized when it |
| finds the right variables in libthread.so. Since it's a shared library, |
| those variables don't show up until the library gets mapped and the symbol |
| table is read in. */ |
| |
| /* This new_objfile event is now managed by a chained function pointer. |
| * It is the callee's responsability to call the next client on the chain. |
| */ |
| |
| /* Saved pointer to previous owner of the new_objfile event. */ |
| static void (*target_new_objfile_chain) PARAMS ((struct objfile *)); |
| |
| void |
| sol_thread_new_objfile (objfile) |
| struct objfile *objfile; |
| { |
| td_err_e val; |
| |
| if (!objfile) |
| { |
| sol_thread_active = 0; |
| goto quit; |
| } |
| |
| /* don't do anything if init failed to resolve the libthread_db library */ |
| if (!procfs_suppress_run) |
| goto quit; |
| |
| /* Now, initialize the thread debugging library. This needs to be done after |
| the shared libraries are located because it needs information from the |
| user's thread library. */ |
| |
| val = p_td_init (); |
| if (val != TD_OK) |
| { |
| warning ("sol_thread_new_objfile: td_init: %s", td_err_string (val)); |
| goto quit; |
| } |
| |
| val = p_td_ta_new (&main_ph, &main_ta); |
| if (val == TD_NOLIBTHREAD) |
| goto quit; |
| else if (val != TD_OK) |
| { |
| warning ("sol_thread_new_objfile: td_ta_new: %s", td_err_string (val)); |
| goto quit; |
| } |
| |
| sol_thread_active = 1; |
| quit: |
| /* Call predecessor on chain, if any. */ |
| if (target_new_objfile_chain) |
| target_new_objfile_chain (objfile); |
| } |
| |
| /* Clean up after the inferior dies. */ |
| |
| static void |
| sol_thread_mourn_inferior () |
| { |
| unpush_target (&sol_thread_ops); |
| procfs_ops.to_mourn_inferior (); |
| } |
| |
| /* Mark our target-struct as eligible for stray "run" and "attach" commands. */ |
| |
| static int |
| sol_thread_can_run () |
| { |
| return procfs_suppress_run; |
| } |
| |
| /* |
| |
| LOCAL FUNCTION |
| |
| sol_thread_alive - test thread for "aliveness" |
| |
| SYNOPSIS |
| |
| static bool sol_thread_alive (int pid); |
| |
| DESCRIPTION |
| |
| returns true if thread still active in inferior. |
| |
| */ |
| |
| static int |
| sol_thread_alive (pid) |
| int pid; |
| { |
| if (is_thread (pid)) /* non-kernel thread */ |
| { |
| td_err_e val; |
| td_thrhandle_t th; |
| |
| pid = GET_THREAD (pid); |
| if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK) |
| return 0; /* thread not found */ |
| if ((val = p_td_thr_validate (&th)) != TD_OK) |
| return 0; /* thread not valid */ |
| return 1; /* known thread: return true */ |
| } |
| else |
| /* kernel thread (LWP): let procfs test it */ |
| { |
| if (target_has_execution) |
| return procfs_ops.to_thread_alive (pid); |
| else |
| return orig_core_ops.to_thread_alive (pid); |
| } |
| } |
| |
| static void |
| sol_thread_stop () |
| { |
| procfs_ops.to_stop (); |
| } |
| |
| /* These routines implement the lower half of the thread_db interface. Ie: the |
| ps_* routines. */ |
| |
| /* Various versions of <proc_service.h> have slightly |
| different function prototypes. In particular, we have |
| |
| NEWER OLDER |
| struct ps_prochandle * const struct ps_prochandle * |
| void* char* |
| const void* char* |
| int size_t |
| |
| Which one you have depends on solaris version and what |
| patches you've applied. On the theory that there are |
| only two major variants, we have configure check the |
| prototype of ps_pdwrite (), and use that info to make |
| appropriate typedefs here. */ |
| |
| #ifdef PROC_SERVICE_IS_OLD |
| typedef const struct ps_prochandle *gdb_ps_prochandle_t; |
| typedef char *gdb_ps_read_buf_t; |
| typedef char *gdb_ps_write_buf_t; |
| typedef int gdb_ps_size_t; |
| #else |
| typedef struct ps_prochandle *gdb_ps_prochandle_t; |
| typedef void *gdb_ps_read_buf_t; |
| typedef const void *gdb_ps_write_buf_t; |
| typedef size_t gdb_ps_size_t; |
| #endif |
| |
| |
| /* The next four routines are called by thread_db to tell us to stop and stop |
| a particular process or lwp. Since GDB ensures that these are all stopped |
| by the time we call anything in thread_db, these routines need to do |
| nothing. */ |
| |
| /* Process stop */ |
| |
| ps_err_e |
| ps_pstop (gdb_ps_prochandle_t ph) |
| { |
| return PS_OK; |
| } |
| |
| /* Process continue */ |
| |
| ps_err_e |
| ps_pcontinue (gdb_ps_prochandle_t ph) |
| { |
| return PS_OK; |
| } |
| |
| /* LWP stop */ |
| |
| ps_err_e |
| ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid) |
| { |
| return PS_OK; |
| } |
| |
| /* LWP continue */ |
| |
| ps_err_e |
| ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid) |
| { |
| return PS_OK; |
| } |
| |
| /* Looks up the symbol LD_SYMBOL_NAME in the debugger's symbol table. */ |
| |
| ps_err_e |
| ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name, |
| const char *ld_symbol_name, paddr_t * ld_symbol_addr) |
| { |
| struct minimal_symbol *ms; |
| |
| ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL); |
| |
| if (!ms) |
| return PS_NOSYM; |
| |
| *ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms); |
| |
| return PS_OK; |
| } |
| |
| /* Common routine for reading and writing memory. */ |
| |
| static ps_err_e |
| rw_common (int dowrite, const struct ps_prochandle *ph, paddr_t addr, |
| char *buf, int size) |
| { |
| struct cleanup *old_chain; |
| |
| old_chain = save_inferior_pid (); |
| |
| if (is_thread (inferior_pid) || /* A thread */ |
| !target_thread_alive (inferior_pid)) /* An lwp, but not alive */ |
| inferior_pid = procfs_first_available (); /* Find any live lwp. */ |
| /* Note: don't need to call switch_to_thread; we're just reading memory. */ |
| |
| while (size > 0) |
| { |
| int cc; |
| |
| if (target_has_execution) |
| cc = procfs_ops.to_xfer_memory (addr, buf, size, dowrite, &procfs_ops); |
| else |
| cc = orig_core_ops.to_xfer_memory (addr, buf, size, dowrite, &core_ops); |
| |
| if (cc < 0) |
| { |
| if (dowrite == 0) |
| print_sys_errmsg ("rw_common (): read", errno); |
| else |
| print_sys_errmsg ("rw_common (): write", errno); |
| |
| do_cleanups (old_chain); |
| |
| return PS_ERR; |
| } |
| size -= cc; |
| buf += cc; |
| } |
| |
| do_cleanups (old_chain); |
| |
| return PS_OK; |
| } |
| |
| /* Copies SIZE bytes from target process .data segment to debugger memory. */ |
| |
| ps_err_e |
| ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr, |
| gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
| { |
| return rw_common (0, ph, addr, buf, size); |
| } |
| |
| /* Copies SIZE bytes from debugger memory .data segment to target process. */ |
| |
| ps_err_e |
| ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr, |
| gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
| { |
| return rw_common (1, ph, addr, (char *) buf, size); |
| } |
| |
| /* Copies SIZE bytes from target process .text segment to debugger memory. */ |
| |
| ps_err_e |
| ps_ptread (gdb_ps_prochandle_t ph, paddr_t addr, |
| gdb_ps_read_buf_t buf, gdb_ps_size_t size) |
| { |
| return rw_common (0, ph, addr, buf, size); |
| } |
| |
| /* Copies SIZE bytes from debugger memory .text segment to target process. */ |
| |
| ps_err_e |
| ps_ptwrite (gdb_ps_prochandle_t ph, paddr_t addr, |
| gdb_ps_write_buf_t buf, gdb_ps_size_t size) |
| { |
| return rw_common (1, ph, addr, (char *) buf, size); |
| } |
| |
| /* Get integer regs for LWP */ |
| |
| ps_err_e |
| ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| prgregset_t gregset) |
| { |
| struct cleanup *old_chain; |
| |
| old_chain = save_inferior_pid (); |
| |
| inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| |
| if (target_has_execution) |
| procfs_ops.to_fetch_registers (-1); |
| else |
| orig_core_ops.to_fetch_registers (-1); |
| fill_gregset (gregset, -1); |
| |
| do_cleanups (old_chain); |
| |
| return PS_OK; |
| } |
| |
| /* Set integer regs for LWP */ |
| |
| ps_err_e |
| ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| const prgregset_t gregset) |
| { |
| struct cleanup *old_chain; |
| |
| old_chain = save_inferior_pid (); |
| |
| inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| |
| supply_gregset (gregset); |
| if (target_has_execution) |
| procfs_ops.to_store_registers (-1); |
| else |
| orig_core_ops.to_store_registers (-1); |
| |
| do_cleanups (old_chain); |
| |
| return PS_OK; |
| } |
| |
| /* Log a message (sends to gdb_stderr). */ |
| |
| void |
| ps_plog (const char *fmt,...) |
| { |
| va_list args; |
| |
| va_start (args, fmt); |
| |
| vfprintf_filtered (gdb_stderr, fmt, args); |
| } |
| |
| /* Get size of extra register set. Currently a noop. */ |
| |
| ps_err_e |
| ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize) |
| { |
| #if 0 |
| int lwp_fd; |
| int regsize; |
| ps_err_e val; |
| |
| val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| if (val != PS_OK) |
| return val; |
| |
| if (ioctl (lwp_fd, PIOCGXREGSIZE, ®size)) |
| { |
| if (errno == EINVAL) |
| return PS_NOFREGS; /* XXX Wrong code, but this is the closest |
| thing in proc_service.h */ |
| |
| print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno); |
| return PS_ERR; |
| } |
| #endif |
| |
| return PS_OK; |
| } |
| |
| /* Get extra register set. Currently a noop. */ |
| |
| ps_err_e |
| ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) |
| { |
| #if 0 |
| int lwp_fd; |
| ps_err_e val; |
| |
| val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| if (val != PS_OK) |
| return val; |
| |
| if (ioctl (lwp_fd, PIOCGXREG, xregset)) |
| { |
| print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno); |
| return PS_ERR; |
| } |
| #endif |
| |
| return PS_OK; |
| } |
| |
| /* Set extra register set. Currently a noop. */ |
| |
| ps_err_e |
| ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset) |
| { |
| #if 0 |
| int lwp_fd; |
| ps_err_e val; |
| |
| val = get_lwp_fd (ph, lwpid, &lwp_fd); |
| if (val != PS_OK) |
| return val; |
| |
| if (ioctl (lwp_fd, PIOCSXREG, xregset)) |
| { |
| print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno); |
| return PS_ERR; |
| } |
| #endif |
| |
| return PS_OK; |
| } |
| |
| /* Get floating-point regs for LWP */ |
| |
| ps_err_e |
| ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| prfpregset_t * fpregset) |
| { |
| struct cleanup *old_chain; |
| |
| old_chain = save_inferior_pid (); |
| |
| inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| |
| if (target_has_execution) |
| procfs_ops.to_fetch_registers (-1); |
| else |
| orig_core_ops.to_fetch_registers (-1); |
| fill_fpregset (fpregset, -1); |
| |
| do_cleanups (old_chain); |
| |
| return PS_OK; |
| } |
| |
| /* Set floating-point regs for LWP */ |
| |
| ps_err_e |
| ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| const prfpregset_t * fpregset) |
| { |
| struct cleanup *old_chain; |
| |
| old_chain = save_inferior_pid (); |
| |
| inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid)); |
| |
| supply_fpregset (fpregset); |
| if (target_has_execution) |
| procfs_ops.to_store_registers (-1); |
| else |
| orig_core_ops.to_store_registers (-1); |
| |
| do_cleanups (old_chain); |
| |
| return PS_OK; |
| } |
| |
| #ifdef TM_I386SOL2_H |
| |
| /* Get local descriptor table. */ |
| |
| #include <sys/procfs.h> |
| #include <sys/reg.h> |
| #include <sys/sysi86.h> |
| |
| static int nldt_allocated = 0; |
| static struct ssd *ldt_bufp = NULL; |
| |
| /* Reads the local descriptor table of a LWP. */ |
| |
| ps_err_e |
| ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid, |
| struct ssd *pldt) |
| { |
| gregset_t gregset; |
| int lwp_fd; |
| ps_err_e val; |
| int nldt; |
| int i; |
| |
| /* Get procfs file descriptor for the LWP. */ |
| lwp_fd = procfs_get_pid_fd (BUILD_LWP (lwpid, PIDGET (inferior_pid))); |
| if (lwp_fd < 0) |
| return PS_BADLID; |
| |
| /* Fetch registers und LDT descriptors. */ |
| if (ioctl (lwp_fd, PIOCGREG, &gregset) == -1) |
| return PS_ERR; |
| |
| if (ioctl (lwp_fd, PIOCNLDT, &nldt) == -1) |
| return PS_ERR; |
| |
| if (nldt_allocated < nldt) |
| { |
| ldt_bufp |
| = (struct ssd *) xrealloc (ldt_bufp, (nldt + 1) * sizeof (struct ssd)); |
| nldt_allocated = nldt; |
| } |
| |
| if (ioctl (lwp_fd, PIOCLDT, ldt_bufp) == -1) |
| return PS_ERR; |
| |
| /* Search LDT for the LWP via register GS. */ |
| for (i = 0; i < nldt; i++) |
| { |
| if (ldt_bufp[i].sel == (gregset[GS] & 0xffff)) |
| { |
| *pldt = ldt_bufp[i]; |
| return PS_OK; |
| } |
| } |
| |
| /* LDT not found. */ |
| return PS_ERR; |
| } |
| #endif /* TM_I386SOL2_H */ |
| |
| /* Convert a pid to printable form. */ |
| |
| char * |
| solaris_pid_to_str (pid) |
| int pid; |
| { |
| static char buf[100]; |
| |
| /* in case init failed to resolve the libthread_db library */ |
| if (!procfs_suppress_run) |
| return procfs_pid_to_str (pid); |
| |
| if (is_thread (pid)) |
| { |
| int lwp; |
| |
| lwp = thread_to_lwp (pid, -2); |
| |
| if (lwp == -1) |
| sprintf (buf, "Thread %d (defunct)", GET_THREAD (pid)); |
| else if (lwp != -2) |
| sprintf (buf, "Thread %d (LWP %d)", GET_THREAD (pid), GET_LWP (lwp)); |
| else |
| sprintf (buf, "Thread %d ", GET_THREAD (pid)); |
| } |
| else if (GET_LWP (pid) != 0) |
| sprintf (buf, "LWP %d ", GET_LWP (pid)); |
| else |
| sprintf (buf, "process %d ", PIDGET (pid)); |
| |
| return buf; |
| } |
| |
| |
| /* Worker bee for find_new_threads |
| Callback function that gets called once per USER thread (i.e., not |
| kernel) thread. */ |
| |
| static int |
| sol_find_new_threads_callback (th, ignored) |
| const td_thrhandle_t *th; |
| void *ignored; |
| { |
| td_err_e retval; |
| td_thrinfo_t ti; |
| int pid; |
| |
| if ((retval = p_td_thr_get_info (th, &ti)) != TD_OK) |
| { |
| return -1; |
| } |
| pid = BUILD_THREAD (ti.ti_tid, PIDGET (inferior_pid)); |
| if (!in_thread_list (pid)) |
| add_thread (pid); |
| |
| return 0; |
| } |
| |
| static void |
| sol_find_new_threads () |
| { |
| /* don't do anything if init failed to resolve the libthread_db library */ |
| if (!procfs_suppress_run) |
| return; |
| |
| if (inferior_pid == -1) |
| { |
| printf_filtered ("No process.\n"); |
| return; |
| } |
| procfs_find_new_threads (); /* first find new kernel threads. */ |
| p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *) 0, |
| TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| } |
| |
| static void |
| sol_core_open (filename, from_tty) |
| char *filename; |
| int from_tty; |
| { |
| orig_core_ops.to_open (filename, from_tty); |
| } |
| |
| static void |
| sol_core_close (quitting) |
| int quitting; |
| { |
| orig_core_ops.to_close (quitting); |
| } |
| |
| static void |
| sol_core_detach (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| unpush_target (&core_ops); |
| orig_core_ops.to_detach (args, from_tty); |
| } |
| |
| static void |
| sol_core_files_info (t) |
| struct target_ops *t; |
| { |
| orig_core_ops.to_files_info (t); |
| } |
| |
| /* Worker bee for info sol-thread command. This is a callback function that |
| gets called once for each Solaris thread (ie. not kernel thread) in the |
| inferior. Print anything interesting that we can think of. */ |
| |
| static int |
| info_cb (th, s) |
| const td_thrhandle_t *th; |
| void *s; |
| { |
| td_err_e ret; |
| td_thrinfo_t ti; |
| |
| if ((ret = p_td_thr_get_info (th, &ti)) == TD_OK) |
| { |
| printf_filtered ("%s thread #%d, lwp %d, ", |
| ti.ti_type == TD_THR_SYSTEM ? "system" : "user ", |
| ti.ti_tid, ti.ti_lid); |
| switch (ti.ti_state) |
| { |
| default: |
| case TD_THR_UNKNOWN: |
| printf_filtered ("<unknown state>"); |
| break; |
| case TD_THR_STOPPED: |
| printf_filtered ("(stopped)"); |
| break; |
| case TD_THR_RUN: |
| printf_filtered ("(run) "); |
| break; |
| case TD_THR_ACTIVE: |
| printf_filtered ("(active) "); |
| break; |
| case TD_THR_ZOMBIE: |
| printf_filtered ("(zombie) "); |
| break; |
| case TD_THR_SLEEP: |
| printf_filtered ("(asleep) "); |
| break; |
| case TD_THR_STOPPED_ASLEEP: |
| printf_filtered ("(stopped asleep)"); |
| break; |
| } |
| /* Print thr_create start function: */ |
| if (ti.ti_startfunc != 0) |
| { |
| struct minimal_symbol *msym; |
| msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc); |
| if (msym) |
| printf_filtered (" startfunc: %s\n", SYMBOL_NAME (msym)); |
| else |
| printf_filtered (" startfunc: 0x%s\n", paddr (ti.ti_startfunc)); |
| } |
| |
| /* If thread is asleep, print function that went to sleep: */ |
| if (ti.ti_state == TD_THR_SLEEP) |
| { |
| struct minimal_symbol *msym; |
| msym = lookup_minimal_symbol_by_pc (ti.ti_pc); |
| if (msym) |
| printf_filtered (" - Sleep func: %s\n", SYMBOL_NAME (msym)); |
| else |
| printf_filtered (" - Sleep func: 0x%s\n", paddr (ti.ti_startfunc)); |
| } |
| |
| /* Wrap up line, if necessary */ |
| if (ti.ti_state != TD_THR_SLEEP && ti.ti_startfunc == 0) |
| printf_filtered ("\n"); /* don't you hate counting newlines? */ |
| } |
| else |
| warning ("info sol-thread: failed to get info for thread."); |
| |
| return 0; |
| } |
| |
| /* List some state about each Solaris user thread in the inferior. */ |
| |
| static void |
| info_solthreads (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| p_td_ta_thr_iter (main_ta, info_cb, args, |
| TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, |
| TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS); |
| } |
| |
| static int |
| ignore (addr, contents) |
| CORE_ADDR addr; |
| char *contents; |
| { |
| return 0; |
| } |
| |
| |
| static void |
| init_sol_thread_ops () |
| { |
| sol_thread_ops.to_shortname = "solaris-threads"; |
| sol_thread_ops.to_longname = "Solaris threads and pthread."; |
| sol_thread_ops.to_doc = "Solaris threads and pthread support."; |
| sol_thread_ops.to_open = sol_thread_open; |
| sol_thread_ops.to_close = 0; |
| sol_thread_ops.to_attach = sol_thread_attach; |
| sol_thread_ops.to_detach = sol_thread_detach; |
| sol_thread_ops.to_resume = sol_thread_resume; |
| sol_thread_ops.to_wait = sol_thread_wait; |
| sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers; |
| sol_thread_ops.to_store_registers = sol_thread_store_registers; |
| sol_thread_ops.to_prepare_to_store = sol_thread_prepare_to_store; |
| sol_thread_ops.to_xfer_memory = sol_thread_xfer_memory; |
| sol_thread_ops.to_files_info = sol_thread_files_info; |
| sol_thread_ops.to_insert_breakpoint = memory_insert_breakpoint; |
| sol_thread_ops.to_remove_breakpoint = memory_remove_breakpoint; |
| sol_thread_ops.to_terminal_init = terminal_init_inferior; |
| sol_thread_ops.to_terminal_inferior = terminal_inferior; |
| sol_thread_ops.to_terminal_ours_for_output = terminal_ours_for_output; |
| sol_thread_ops.to_terminal_ours = terminal_ours; |
| sol_thread_ops.to_terminal_info = child_terminal_info; |
| sol_thread_ops.to_kill = sol_thread_kill_inferior; |
| sol_thread_ops.to_load = 0; |
| sol_thread_ops.to_lookup_symbol = 0; |
| sol_thread_ops.to_create_inferior = sol_thread_create_inferior; |
| sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior; |
| sol_thread_ops.to_can_run = sol_thread_can_run; |
| sol_thread_ops.to_notice_signals = sol_thread_notice_signals; |
| sol_thread_ops.to_thread_alive = sol_thread_alive; |
| sol_thread_ops.to_pid_to_str = solaris_pid_to_str; |
| sol_thread_ops.to_find_new_threads = sol_find_new_threads; |
| sol_thread_ops.to_stop = sol_thread_stop; |
| sol_thread_ops.to_stratum = process_stratum; |
| sol_thread_ops.to_has_all_memory = 1; |
| sol_thread_ops.to_has_memory = 1; |
| sol_thread_ops.to_has_stack = 1; |
| sol_thread_ops.to_has_registers = 1; |
| sol_thread_ops.to_has_execution = 1; |
| sol_thread_ops.to_has_thread_control = tc_none; |
| sol_thread_ops.to_sections = 0; |
| sol_thread_ops.to_sections_end = 0; |
| sol_thread_ops.to_magic = OPS_MAGIC; |
| } |
| |
| |
| static void |
| init_sol_core_ops () |
| { |
| sol_core_ops.to_shortname = "solaris-core"; |
| sol_core_ops.to_longname = "Solaris core threads and pthread."; |
| sol_core_ops.to_doc = "Solaris threads and pthread support for core files."; |
| sol_core_ops.to_open = sol_core_open; |
| sol_core_ops.to_close = sol_core_close; |
| sol_core_ops.to_attach = sol_thread_attach; |
| sol_core_ops.to_detach = sol_core_detach; |
| /* sol_core_ops.to_resume = 0; */ |
| /* sol_core_ops.to_wait = 0; */ |
| sol_core_ops.to_fetch_registers = sol_thread_fetch_registers; |
| /* sol_core_ops.to_store_registers = 0; */ |
| /* sol_core_ops.to_prepare_to_store = 0; */ |
| sol_core_ops.to_xfer_memory = sol_thread_xfer_memory; |
| sol_core_ops.to_files_info = sol_core_files_info; |
| sol_core_ops.to_insert_breakpoint = ignore; |
| sol_core_ops.to_remove_breakpoint = ignore; |
| /* sol_core_ops.to_terminal_init = 0; */ |
| /* sol_core_ops.to_terminal_inferior = 0; */ |
| /* sol_core_ops.to_terminal_ours_for_output = 0; */ |
| /* sol_core_ops.to_terminal_ours = 0; */ |
| /* sol_core_ops.to_terminal_info = 0; */ |
| /* sol_core_ops.to_kill = 0; */ |
| /* sol_core_ops.to_load = 0; */ |
| /* sol_core_ops.to_lookup_symbol = 0; */ |
| sol_core_ops.to_create_inferior = sol_thread_create_inferior; |
| sol_core_ops.to_stratum = core_stratum; |
| sol_core_ops.to_has_all_memory = 0; |
| sol_core_ops.to_has_memory = 1; |
| sol_core_ops.to_has_stack = 1; |
| sol_core_ops.to_has_registers = 1; |
| sol_core_ops.to_has_execution = 0; |
| sol_core_ops.to_has_thread_control = tc_none; |
| sol_core_ops.to_pid_to_str = solaris_pid_to_str; |
| sol_core_ops.to_sections = 0; |
| sol_core_ops.to_sections_end = 0; |
| sol_core_ops.to_magic = OPS_MAGIC; |
| } |
| |
| /* we suppress the call to add_target of core_ops in corelow because |
| if there are two targets in the stratum core_stratum, find_core_target |
| won't know which one to return. see corelow.c for an additonal |
| comment on coreops_suppress_target. */ |
| int coreops_suppress_target = 1; |
| |
| void |
| _initialize_sol_thread () |
| { |
| void *dlhandle; |
| |
| init_sol_thread_ops (); |
| init_sol_core_ops (); |
| |
| dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW); |
| if (!dlhandle) |
| goto die; |
| |
| #define resolve(X) \ |
| if (!(p_##X = dlsym (dlhandle, #X))) \ |
| goto die; |
| |
| resolve (td_log); |
| resolve (td_ta_new); |
| resolve (td_ta_delete); |
| resolve (td_init); |
| resolve (td_ta_get_ph); |
| resolve (td_ta_get_nthreads); |
| resolve (td_ta_tsd_iter); |
| resolve (td_ta_thr_iter); |
| resolve (td_thr_validate); |
| resolve (td_thr_tsd); |
| resolve (td_thr_get_info); |
| resolve (td_thr_getfpregs); |
| resolve (td_thr_getxregsize); |
| resolve (td_thr_getxregs); |
| resolve (td_thr_sigsetmask); |
| resolve (td_thr_setprio); |
| resolve (td_thr_setsigpending); |
| resolve (td_thr_setfpregs); |
| resolve (td_thr_setxregs); |
| resolve (td_ta_map_id2thr); |
| resolve (td_ta_map_lwp2thr); |
| resolve (td_thr_getgregs); |
| resolve (td_thr_setgregs); |
| |
| add_target (&sol_thread_ops); |
| |
| procfs_suppress_run = 1; |
| |
| add_cmd ("sol-threads", class_maintenance, info_solthreads, |
| "Show info on Solaris user threads.\n", &maintenanceinfolist); |
| |
| memcpy (&orig_core_ops, &core_ops, sizeof (struct target_ops)); |
| memcpy (&core_ops, &sol_core_ops, sizeof (struct target_ops)); |
| add_target (&core_ops); |
| |
| /* Hook into new_objfile notification. */ |
| target_new_objfile_chain = target_new_objfile_hook; |
| target_new_objfile_hook = sol_thread_new_objfile; |
| return; |
| |
| die: |
| |
| fprintf_unfiltered (gdb_stderr, "[GDB will not be able to debug user-mode threads: %s]\n", dlerror ()); |
| |
| if (dlhandle) |
| dlclose (dlhandle); |
| |
| /* allow the user to debug non-threaded core files */ |
| add_target (&core_ops); |
| |
| return; |
| } |