1721 lines
46 KiB
C
1721 lines
46 KiB
C
/* Low level interface for debugging Solaris threads for GDB, the GNU debugger.
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Copyright 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This module implements a sort of half target that sits between the
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machine-independent parts of GDB and the /proc interface (procfs.c) to
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provide access to the Solaris user-mode thread implementation.
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Solaris threads are true user-mode threads, which are invoked via the thr_*
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and pthread_* (native and Posix respectivly) interfaces. These are mostly
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implemented in user-space, with all thread context kept in various
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structures that live in the user's heap. These should not be confused with
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lightweight processes (LWPs), which are implemented by the kernel, and
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scheduled without explicit intervention by the process.
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Just to confuse things a little, Solaris threads (both native and Posix) are
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actually implemented using LWPs. In general, there are going to be more
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threads than LWPs. There is no fixed correspondence between a thread and an
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LWP. When a thread wants to run, it gets scheduled onto the first available
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LWP and can therefore migrate from one LWP to another as time goes on. A
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sleeping thread may not be associated with an LWP at all!
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To make it possible to mess with threads, Sun provides a library called
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libthread_db.so.1 (not to be confused with libthread_db.so.0, which doesn't
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have a published interface). This interface has an upper part, which it
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provides, and a lower part which I provide. The upper part consists of the
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td_* routines, which allow me to find all the threads, query their state,
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etc... The lower part consists of all of the ps_*, which are used by the
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td_* routines to read/write memory, manipulate LWPs, lookup symbols, etc...
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The ps_* routines actually do most of their work by calling functions in
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procfs.c. */
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#include "defs.h"
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#include <thread.h>
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#include <proc_service.h>
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#include <thread_db.h>
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#include "gdbthread.h"
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#include "target.h"
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#include "inferior.h"
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <dlfcn.h>
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#include "gdbcmd.h"
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extern struct target_ops sol_thread_ops; /* Forward declaration */
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extern struct target_ops sol_core_ops; /* Forward declaration */
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/* place to store core_ops before we overwrite it */
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static struct target_ops orig_core_ops;
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struct target_ops sol_thread_ops;
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struct target_ops sol_core_ops;
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extern int procfs_suppress_run;
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extern struct target_ops procfs_ops; /* target vector for procfs.c */
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extern struct target_ops core_ops; /* target vector for corelow.c */
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extern char *procfs_pid_to_str PARAMS ((int pid));
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/* Note that these prototypes differ slightly from those used in procfs.c
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for of two reasons. One, we can't use gregset_t, as that's got a whole
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different meaning under Solaris (also, see above). Two, we can't use the
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pointer form here as these are actually arrays of ints (for Sparc's at
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least), and are automatically coerced into pointers to ints when used as
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parameters. That makes it impossible to avoid a compiler warning when
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passing pr{g fp}regset_t's from a parameter to an argument of one of
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these functions. */
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extern void supply_gregset PARAMS ((const prgregset_t));
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extern void fill_gregset PARAMS ((prgregset_t, int));
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extern void supply_fpregset PARAMS ((const prfpregset_t *));
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extern void fill_fpregset PARAMS ((prfpregset_t *, int));
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/* This struct is defined by us, but mainly used for the proc_service interface.
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We don't have much use for it, except as a handy place to get a real pid
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for memory accesses. */
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struct ps_prochandle
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{
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pid_t pid;
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};
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struct string_map
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{
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int num;
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char *str;
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};
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static struct ps_prochandle main_ph;
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static td_thragent_t *main_ta;
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static int sol_thread_active = 0;
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static struct cleanup *save_inferior_pid PARAMS ((void));
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static void restore_inferior_pid PARAMS ((void *pid));
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static char *td_err_string PARAMS ((td_err_e errcode));
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static char *td_state_string PARAMS ((td_thr_state_e statecode));
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static int thread_to_lwp PARAMS ((int thread_id, int default_lwp));
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static void sol_thread_resume PARAMS ((int pid, int step,
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enum target_signal signo));
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static int lwp_to_thread PARAMS ((int lwp));
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static int sol_thread_alive PARAMS ((int pid));
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static void sol_core_close PARAMS ((int quitting));
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static void init_sol_thread_ops PARAMS ((void));
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static void init_sol_core_ops PARAMS ((void));
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/* Default definitions: These must be defined in tm.h
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if they are to be shared with a process module such as procfs. */
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#define THREAD_FLAG 0x80000000
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#define is_thread(ARG) (((ARG) & THREAD_FLAG) != 0)
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#define is_lwp(ARG) (((ARG) & THREAD_FLAG) == 0)
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#define GET_LWP(PID) TIDGET (PID)
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#define GET_THREAD(PID) TIDGET (PID)
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#define BUILD_LWP(TID, PID) MERGEPID (PID, TID)
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#define BUILD_THREAD(TID, PID) (MERGEPID (PID, TID) | THREAD_FLAG)
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/* Pointers to routines from lithread_db resolved by dlopen() */
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static void
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(*p_td_log) (const int on_off);
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static td_err_e
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(*p_td_ta_new) (const struct ps_prochandle * ph_p, td_thragent_t ** ta_pp);
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static td_err_e
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(*p_td_ta_delete) (td_thragent_t * ta_p);
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static td_err_e
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(*p_td_init) (void);
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static td_err_e
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(*p_td_ta_get_ph) (const td_thragent_t * ta_p, struct ps_prochandle ** ph_pp);
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static td_err_e
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(*p_td_ta_get_nthreads) (const td_thragent_t * ta_p, int *nthread_p);
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static td_err_e
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(*p_td_ta_tsd_iter) (const td_thragent_t * ta_p, td_key_iter_f * cb, void *cbdata_p);
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static td_err_e
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(*p_td_ta_thr_iter) (const td_thragent_t * ta_p, td_thr_iter_f * cb, void *cbdata_p, td_thr_state_e state,
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int ti_pri, sigset_t * ti_sigmask_p, unsigned ti_user_flags);
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static td_err_e
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(*p_td_thr_validate) (const td_thrhandle_t * th_p);
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static td_err_e
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(*p_td_thr_tsd) (const td_thrhandle_t * th_p, const thread_key_t key, void **data_pp);
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static td_err_e
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(*p_td_thr_get_info) (const td_thrhandle_t * th_p, td_thrinfo_t * ti_p);
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static td_err_e
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(*p_td_thr_getfpregs) (const td_thrhandle_t * th_p, prfpregset_t * fpregset);
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static td_err_e
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(*p_td_thr_getxregsize) (const td_thrhandle_t * th_p, int *xregsize);
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static td_err_e
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(*p_td_thr_getxregs) (const td_thrhandle_t * th_p, const caddr_t xregset);
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static td_err_e
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(*p_td_thr_sigsetmask) (const td_thrhandle_t * th_p, const sigset_t ti_sigmask);
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static td_err_e
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(*p_td_thr_setprio) (const td_thrhandle_t * th_p, const int ti_pri);
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static td_err_e
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(*p_td_thr_setsigpending) (const td_thrhandle_t * th_p, const uchar_t ti_pending_flag, const sigset_t ti_pending);
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static td_err_e
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(*p_td_thr_setfpregs) (const td_thrhandle_t * th_p, const prfpregset_t * fpregset);
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static td_err_e
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(*p_td_thr_setxregs) (const td_thrhandle_t * th_p, const caddr_t xregset);
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static td_err_e
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(*p_td_ta_map_id2thr) (const td_thragent_t * ta_p, thread_t tid, td_thrhandle_t * th_p);
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static td_err_e
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(*p_td_ta_map_lwp2thr) (const td_thragent_t * ta_p, lwpid_t lwpid, td_thrhandle_t * th_p);
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static td_err_e
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(*p_td_thr_getgregs) (const td_thrhandle_t * th_p, prgregset_t regset);
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static td_err_e
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(*p_td_thr_setgregs) (const td_thrhandle_t * th_p, const prgregset_t regset);
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/*
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LOCAL FUNCTION
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td_err_string - Convert a thread_db error code to a string
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SYNOPSIS
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char * td_err_string (errcode)
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DESCRIPTION
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Return the thread_db error string associated with errcode. If errcode
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is unknown, then return a message.
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*/
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static char *
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td_err_string (errcode)
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td_err_e errcode;
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{
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static struct string_map
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td_err_table[] =
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{
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{TD_OK, "generic \"call succeeded\""},
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{TD_ERR, "generic error."},
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{TD_NOTHR, "no thread can be found to satisfy query"},
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{TD_NOSV, "no synch. variable can be found to satisfy query"},
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{TD_NOLWP, "no lwp can be found to satisfy query"},
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{TD_BADPH, "invalid process handle"},
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{TD_BADTH, "invalid thread handle"},
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{TD_BADSH, "invalid synchronization handle"},
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{TD_BADTA, "invalid thread agent"},
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{TD_BADKEY, "invalid key"},
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{TD_NOMSG, "td_thr_event_getmsg() called when there was no message"},
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{TD_NOFPREGS, "FPU register set not available for given thread"},
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{TD_NOLIBTHREAD, "application not linked with libthread"},
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{TD_NOEVENT, "requested event is not supported"},
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{TD_NOCAPAB, "capability not available"},
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{TD_DBERR, "Debugger service failed"},
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{TD_NOAPLIC, "Operation not applicable to"},
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{TD_NOTSD, "No thread specific data for this thread"},
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{TD_MALLOC, "Malloc failed"},
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{TD_PARTIALREG, "Only part of register set was writen/read"},
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{TD_NOXREGS, "X register set not available for given thread"}
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};
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const int td_err_size = sizeof td_err_table / sizeof (struct string_map);
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int i;
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static char buf[50];
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for (i = 0; i < td_err_size; i++)
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if (td_err_table[i].num == errcode)
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return td_err_table[i].str;
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sprintf (buf, "Unknown thread_db error code: %d", errcode);
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return buf;
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}
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/*
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LOCAL FUNCTION
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td_state_string - Convert a thread_db state code to a string
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SYNOPSIS
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char * td_state_string (statecode)
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DESCRIPTION
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Return the thread_db state string associated with statecode. If
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statecode is unknown, then return a message.
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*/
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static char *
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td_state_string (statecode)
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td_thr_state_e statecode;
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{
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static struct string_map
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td_thr_state_table[] =
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{
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{TD_THR_ANY_STATE, "any state"},
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{TD_THR_UNKNOWN, "unknown"},
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{TD_THR_STOPPED, "stopped"},
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{TD_THR_RUN, "run"},
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{TD_THR_ACTIVE, "active"},
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{TD_THR_ZOMBIE, "zombie"},
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{TD_THR_SLEEP, "sleep"},
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{TD_THR_STOPPED_ASLEEP, "stopped asleep"}
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};
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const int td_thr_state_table_size = sizeof td_thr_state_table / sizeof (struct string_map);
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int i;
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static char buf[50];
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for (i = 0; i < td_thr_state_table_size; i++)
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if (td_thr_state_table[i].num == statecode)
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return td_thr_state_table[i].str;
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sprintf (buf, "Unknown thread_db state code: %d", statecode);
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return buf;
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}
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/*
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LOCAL FUNCTION
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thread_to_lwp - Convert a Posix or Solaris thread id to a LWP id.
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SYNOPSIS
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int thread_to_lwp (thread_id, default_lwp)
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DESCRIPTION
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This function converts a Posix or Solaris thread id to a lightweight
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process id. If thread_id is non-existent, that's an error. If it's
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an inactive thread, then we return default_lwp.
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NOTES
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This function probably shouldn't call error()...
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*/
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static int
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thread_to_lwp (thread_id, default_lwp)
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int thread_id;
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int default_lwp;
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{
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td_thrinfo_t ti;
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td_thrhandle_t th;
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td_err_e val;
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if (is_lwp (thread_id))
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return thread_id; /* It's already an LWP id */
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/* It's a thread. Convert to lwp */
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val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th);
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if (val == TD_NOTHR)
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return -1; /* thread must have terminated */
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else if (val != TD_OK)
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error ("thread_to_lwp: td_ta_map_id2thr %s", td_err_string (val));
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val = p_td_thr_get_info (&th, &ti);
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if (val == TD_NOTHR)
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return -1; /* thread must have terminated */
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else if (val != TD_OK)
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error ("thread_to_lwp: td_thr_get_info: %s", td_err_string (val));
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if (ti.ti_state != TD_THR_ACTIVE)
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{
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if (default_lwp != -1)
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return default_lwp;
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error ("thread_to_lwp: thread state not active: %s",
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td_state_string (ti.ti_state));
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}
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return BUILD_LWP (ti.ti_lid, PIDGET (thread_id));
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}
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/*
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LOCAL FUNCTION
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lwp_to_thread - Convert a LWP id to a Posix or Solaris thread id.
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SYNOPSIS
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int lwp_to_thread (lwp_id)
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DESCRIPTION
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This function converts a lightweight process id to a Posix or Solaris
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thread id. If thread_id is non-existent, that's an error.
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NOTES
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This function probably shouldn't call error()...
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*/
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static int
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lwp_to_thread (lwp)
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int lwp;
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{
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td_thrinfo_t ti;
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td_thrhandle_t th;
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td_err_e val;
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|
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if (is_thread (lwp))
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return lwp; /* It's already a thread id */
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||
/* It's an lwp. Convert it to a thread id. */
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||
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if (!sol_thread_alive (lwp))
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return -1; /* defunct lwp */
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val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th);
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if (val == TD_NOTHR)
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return -1; /* thread must have terminated */
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else if (val != TD_OK)
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error ("lwp_to_thread: td_ta_map_lwp2thr: %s.", td_err_string (val));
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val = p_td_thr_validate (&th);
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if (val == TD_NOTHR)
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return lwp; /* libthread doesn't know about it, just return lwp */
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||
else if (val != TD_OK)
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error ("lwp_to_thread: td_thr_validate: %s.", td_err_string (val));
|
||
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||
val = p_td_thr_get_info (&th, &ti);
|
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if (val == TD_NOTHR)
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||
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 ()
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||
void restore_inferior_pid (int pid)
|
||
|
||
DESCRIPTION
|
||
|
||
These two functions act in unison to restore inferior_pid in
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||
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 *
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||
save_inferior_pid ()
|
||
{
|
||
return make_cleanup (restore_inferior_pid, (void *) inferior_pid);
|
||
}
|
||
|
||
static void
|
||
restore_inferior_pid (pid)
|
||
void *pid;
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||
{
|
||
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;
|
||
typedef paddr_t gdb_ps_addr_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;
|
||
typedef psaddr_t gdb_ps_addr_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, gdb_ps_addr_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, gdb_ps_addr_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, gdb_ps_addr_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, gdb_ps_addr_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, gdb_ps_addr_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, gdb_ps_addr_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
|
||
|
||
/* Reads the local descriptor table of a LWP. */
|
||
|
||
ps_err_e
|
||
ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid,
|
||
struct ssd *pldt)
|
||
{
|
||
/* NOTE: only used on Solaris, therefore OK to refer to procfs.c */
|
||
extern struct ssd *procfs_find_LDT_entry (int);
|
||
struct ssd *ret;
|
||
|
||
/* FIXME: can't I get the process ID from the prochandle or something?
|
||
*/
|
||
|
||
if (inferior_pid <= 0 || lwpid <= 0)
|
||
return PS_BADLID;
|
||
|
||
ret = procfs_find_LDT_entry (BUILD_LWP (lwpid, PIDGET (inferior_pid)));
|
||
if (ret)
|
||
{
|
||
memcpy (pldt, ret, sizeof (struct ssd));
|
||
return PS_OK;
|
||
}
|
||
else /* 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_thread_alive = sol_thread_alive;
|
||
sol_core_ops.to_pid_to_str = solaris_pid_to_str;
|
||
/* On Solaris/x86, when debugging a threaded core file from process <n>,
|
||
the following causes "info threads" to produce "procfs: couldn't find pid
|
||
<n> in procinfo list" where <n> is the pid of the process that produced
|
||
the core file. Disable it for now. */
|
||
/* sol_core_ops.to_find_new_threads = sol_find_new_threads; */
|
||
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;
|
||
}
|