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+/* 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 <unistd.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 ((int 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));
+
+#define THREAD_FLAG 0x80000000
+#define is_thread(ARG) (((ARG) & THREAD_FLAG) != 0)
+#define is_lwp(ARG) (((ARG) & THREAD_FLAG) == 0)
+#define GET_LWP(LWP_ID) (TIDGET(LWP_ID))
+#define GET_THREAD(THREAD_ID) (((THREAD_ID) >> 16) & 0x7fff)
+#define BUILD_LWP(LWP_ID, PID) ((LWP_ID) << 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, inferior_pid);
+}
+
+static void
+restore_inferior_pid (pid)
+ int pid;
+{
+ inferior_pid = 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;
+{
+ 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, & registers[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(& registers[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. */
+
+void
+sol_thread_new_objfile (objfile)
+ struct objfile *objfile;
+{
+ td_err_e val;
+
+ if (!objfile)
+ {
+ sol_thread_active = 0;
+
+ return;
+ }
+
+ /* don't do anything if init failed to resolve the libthread_db library */
+ if (!procfs_suppress_run)
+ return;
+
+ /* 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)
+ error ("target_new_objfile: td_init: %s", td_err_string (val));
+
+ val = p_td_ta_new (&main_ph, &main_ta);
+ if (val == TD_NOLIBTHREAD)
+ return;
+ else if (val != TD_OK)
+ error ("target_new_objfile: td_ta_new: %s", td_err_string (val));
+
+ sol_thread_active = 1;
+}
+
+/* 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. */
+
+ps_err_e
+ps_pstop (gdb_ps_prochandle_t ph)
+{
+ return PS_OK;
+}
+
+ps_err_e
+ps_pcontinue (gdb_ps_prochandle_t ph)
+{
+ return PS_OK;
+}
+
+ps_err_e
+ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid)
+{
+ return PS_OK;
+}
+
+ps_err_e
+ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid)
+{
+ return PS_OK;
+}
+
+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;
+}
+
+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);
+}
+
+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);
+}
+
+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);
+}
+
+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 */
+
+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 */
+
+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;
+}
+
+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, &regsize))
+ {
+ 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. */
+
+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. */
+
+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;
+
+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;
+}
+
+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;
+ }
+ 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);
+}
+
+#ifdef MAINTENANCE_CMDS
+/* 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;
+ struct minimal_symbol *msym;
+
+ 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)
+ if (msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc))
+ printf_filtered (" startfunc: %s\n", SYMBOL_NAME (msym));
+ else
+ printf_filtered (" startfunc: 0x%08x\n", ti.ti_startfunc);
+
+ /* If thread is asleep, print function that went to sleep: */
+ if (ti.ti_state == TD_THR_SLEEP)
+ if (msym = lookup_minimal_symbol_by_pc (ti.ti_pc))
+ printf_filtered (" - Sleep func: %s\n", SYMBOL_NAME (msym));
+ else
+ printf_filtered (" - Sleep func: 0x%08x\n", 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);
+}
+#endif /* MAINTENANCE_CMDS */
+
+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_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_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;
+
+#ifdef MAINTENANCE_CMDS
+ add_cmd ("sol-threads", class_maintenance, info_solthreads,
+ "Show info on Solaris user threads.\n", &maintenanceinfolist);
+#endif /* MAINTENANCE_CMDS */
+
+ memcpy(&orig_core_ops, &core_ops, sizeof (struct target_ops));
+ memcpy(&core_ops, &sol_core_ops, sizeof (struct target_ops));
+ add_target (&core_ops);
+
+ 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;
+}
generated by cgit v1.1 at 2024-11-24 03:24:50 +0000