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-rw-r--r--gdb/thread.c754
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diff --git a/gdb/thread.c b/gdb/thread.c
deleted file mode 100644
index b9c1f0265ec..00000000000
--- a/gdb/thread.c
+++ /dev/null
@@ -1,754 +0,0 @@
-/* Multi-process/thread control for GDB, the GNU debugger.
-
- Copyright 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
-
- Contributed by Lynx Real-Time Systems, Inc. Los Gatos, CA.
-
- 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. */
-
-#include "defs.h"
-#include "symtab.h"
-#include "frame.h"
-#include "inferior.h"
-#include "environ.h"
-#include "value.h"
-#include "target.h"
-#include "gdbthread.h"
-#include "command.h"
-#include "gdbcmd.h"
-#include "regcache.h"
-#include "gdb.h"
-
-#include <ctype.h>
-#include <sys/types.h>
-#include <signal.h>
-#include "ui-out.h"
-
-/*#include "lynxos-core.h" */
-
-/* Definition of struct thread_info exported to gdbthread.h */
-
-/* Prototypes for exported functions. */
-
-void _initialize_thread (void);
-
-/* Prototypes for local functions. */
-
-static struct thread_info *thread_list = NULL;
-static int highest_thread_num;
-
-static struct thread_info *find_thread_id (int num);
-
-static void thread_command (char *tidstr, int from_tty);
-static void thread_apply_all_command (char *, int);
-static int thread_alive (struct thread_info *);
-static void info_threads_command (char *, int);
-static void thread_apply_command (char *, int);
-static void restore_current_thread (ptid_t);
-static void switch_to_thread (ptid_t ptid);
-static void prune_threads (void);
-
-void
-delete_step_resume_breakpoint (void *arg)
-{
- struct breakpoint **breakpointp = (struct breakpoint **) arg;
- struct thread_info *tp;
-
- if (*breakpointp != NULL)
- {
- delete_breakpoint (*breakpointp);
- for (tp = thread_list; tp; tp = tp->next)
- if (tp->step_resume_breakpoint == *breakpointp)
- tp->step_resume_breakpoint = NULL;
-
- *breakpointp = NULL;
- }
-}
-
-static void
-free_thread (struct thread_info *tp)
-{
- /* NOTE: this will take care of any left-over step_resume breakpoints,
- but not any user-specified thread-specific breakpoints. */
- if (tp->step_resume_breakpoint)
- delete_breakpoint (tp->step_resume_breakpoint);
-
- /* FIXME: do I ever need to call the back-end to give it a
- chance at this private data before deleting the thread? */
- if (tp->private)
- xfree (tp->private);
-
- xfree (tp);
-}
-
-void
-init_thread_list (void)
-{
- struct thread_info *tp, *tpnext;
-
- highest_thread_num = 0;
- if (!thread_list)
- return;
-
- for (tp = thread_list; tp; tp = tpnext)
- {
- tpnext = tp->next;
- free_thread (tp);
- }
-
- thread_list = NULL;
-}
-
-/* add_thread now returns a pointer to the new thread_info,
- so that back_ends can initialize their private data. */
-
-struct thread_info *
-add_thread (ptid_t ptid)
-{
- struct thread_info *tp;
-
- tp = (struct thread_info *) xmalloc (sizeof (*tp));
- memset (tp, 0, sizeof (*tp));
- tp->ptid = ptid;
- tp->num = ++highest_thread_num;
- tp->next = thread_list;
- thread_list = tp;
- return tp;
-}
-
-void
-delete_thread (ptid_t ptid)
-{
- struct thread_info *tp, *tpprev;
-
- tpprev = NULL;
-
- for (tp = thread_list; tp; tpprev = tp, tp = tp->next)
- if (ptid_equal (tp->ptid, ptid))
- break;
-
- if (!tp)
- return;
-
- if (tpprev)
- tpprev->next = tp->next;
- else
- thread_list = tp->next;
-
- free_thread (tp);
-}
-
-static struct thread_info *
-find_thread_id (int num)
-{
- struct thread_info *tp;
-
- for (tp = thread_list; tp; tp = tp->next)
- if (tp->num == num)
- return tp;
-
- return NULL;
-}
-
-/* Find a thread_info by matching PTID. */
-struct thread_info *
-find_thread_pid (ptid_t ptid)
-{
- struct thread_info *tp;
-
- for (tp = thread_list; tp; tp = tp->next)
- if (ptid_equal (tp->ptid, ptid))
- return tp;
-
- return NULL;
-}
-
-/*
- * Thread iterator function.
- *
- * Calls a callback function once for each thread, so long as
- * the callback function returns false. If the callback function
- * returns true, the iteration will end and the current thread
- * will be returned. This can be useful for implementing a
- * search for a thread with arbitrary attributes, or for applying
- * some operation to every thread.
- *
- * FIXME: some of the existing functionality, such as
- * "Thread apply all", might be rewritten using this functionality.
- */
-
-struct thread_info *
-iterate_over_threads (int (*callback) (struct thread_info *, void *),
- void *data)
-{
- struct thread_info *tp;
-
- for (tp = thread_list; tp; tp = tp->next)
- if ((*callback) (tp, data))
- return tp;
-
- return NULL;
-}
-
-int
-valid_thread_id (int num)
-{
- struct thread_info *tp;
-
- for (tp = thread_list; tp; tp = tp->next)
- if (tp->num == num)
- return 1;
-
- return 0;
-}
-
-int
-pid_to_thread_id (ptid_t ptid)
-{
- struct thread_info *tp;
-
- for (tp = thread_list; tp; tp = tp->next)
- if (ptid_equal (tp->ptid, ptid))
- return tp->num;
-
- return 0;
-}
-
-ptid_t
-thread_id_to_pid (int num)
-{
- struct thread_info *thread = find_thread_id (num);
- if (thread)
- return thread->ptid;
- else
- return pid_to_ptid (-1);
-}
-
-int
-in_thread_list (ptid_t ptid)
-{
- struct thread_info *tp;
-
- for (tp = thread_list; tp; tp = tp->next)
- if (ptid_equal (tp->ptid, ptid))
- return 1;
-
- return 0; /* Never heard of 'im */
-}
-
-/* Print a list of thread ids currently known, and the total number of
- threads. To be used from within catch_errors. */
-static int
-do_captured_list_thread_ids (struct ui_out *uiout,
- void *arg)
-{
- struct thread_info *tp;
- int num = 0;
-
- ui_out_tuple_begin (uiout, "thread-ids");
-
- for (tp = thread_list; tp; tp = tp->next)
- {
- num++;
- ui_out_field_int (uiout, "thread-id", tp->num);
- }
-
- ui_out_tuple_end (uiout);
- ui_out_field_int (uiout, "number-of-threads", num);
- return GDB_RC_OK;
-}
-
-/* Official gdblib interface function to get a list of thread ids and
- the total number. */
-enum gdb_rc
-gdb_list_thread_ids (struct ui_out *uiout)
-{
- return catch_exceptions (uiout, do_captured_list_thread_ids, NULL,
- NULL, RETURN_MASK_ALL);
-}
-
-/* Load infrun state for the thread PID. */
-
-void
-load_infrun_state (ptid_t ptid,
- CORE_ADDR *prev_pc,
- CORE_ADDR *prev_func_start,
- char **prev_func_name,
- int *trap_expected,
- struct breakpoint **step_resume_breakpoint,
- struct breakpoint **through_sigtramp_breakpoint,
- CORE_ADDR *step_range_start,
- CORE_ADDR *step_range_end,
- CORE_ADDR *step_frame_address,
- int *handling_longjmp,
- int *another_trap,
- int *stepping_through_solib_after_catch,
- bpstat *stepping_through_solib_catchpoints,
- int *stepping_through_sigtramp,
- int *current_line,
- struct symtab **current_symtab,
- CORE_ADDR *step_sp)
-{
- struct thread_info *tp;
-
- /* If we can't find the thread, then we're debugging a single threaded
- process. No need to do anything in that case. */
- tp = find_thread_id (pid_to_thread_id (ptid));
- if (tp == NULL)
- return;
-
- *prev_pc = tp->prev_pc;
- *prev_func_start = tp->prev_func_start;
- *prev_func_name = tp->prev_func_name;
- *trap_expected = tp->trap_expected;
- *step_resume_breakpoint = tp->step_resume_breakpoint;
- *through_sigtramp_breakpoint = tp->through_sigtramp_breakpoint;
- *step_range_start = tp->step_range_start;
- *step_range_end = tp->step_range_end;
- *step_frame_address = tp->step_frame_address;
- *handling_longjmp = tp->handling_longjmp;
- *another_trap = tp->another_trap;
- *stepping_through_solib_after_catch = tp->stepping_through_solib_after_catch;
- *stepping_through_solib_catchpoints = tp->stepping_through_solib_catchpoints;
- *stepping_through_sigtramp = tp->stepping_through_sigtramp;
- *current_line = tp->current_line;
- *current_symtab = tp->current_symtab;
- *step_sp = tp->step_sp;
-}
-
-/* Save infrun state for the thread PID. */
-
-void
-save_infrun_state (ptid_t ptid,
- CORE_ADDR prev_pc,
- CORE_ADDR prev_func_start,
- char *prev_func_name,
- int trap_expected,
- struct breakpoint *step_resume_breakpoint,
- struct breakpoint *through_sigtramp_breakpoint,
- CORE_ADDR step_range_start,
- CORE_ADDR step_range_end,
- CORE_ADDR step_frame_address,
- int handling_longjmp,
- int another_trap,
- int stepping_through_solib_after_catch,
- bpstat stepping_through_solib_catchpoints,
- int stepping_through_sigtramp,
- int current_line,
- struct symtab *current_symtab,
- CORE_ADDR step_sp)
-{
- struct thread_info *tp;
-
- /* If we can't find the thread, then we're debugging a single-threaded
- process. Nothing to do in that case. */
- tp = find_thread_id (pid_to_thread_id (ptid));
- if (tp == NULL)
- return;
-
- tp->prev_pc = prev_pc;
- tp->prev_func_start = prev_func_start;
- tp->prev_func_name = prev_func_name;
- tp->trap_expected = trap_expected;
- tp->step_resume_breakpoint = step_resume_breakpoint;
- tp->through_sigtramp_breakpoint = through_sigtramp_breakpoint;
- tp->step_range_start = step_range_start;
- tp->step_range_end = step_range_end;
- tp->step_frame_address = step_frame_address;
- tp->handling_longjmp = handling_longjmp;
- tp->another_trap = another_trap;
- tp->stepping_through_solib_after_catch = stepping_through_solib_after_catch;
- tp->stepping_through_solib_catchpoints = stepping_through_solib_catchpoints;
- tp->stepping_through_sigtramp = stepping_through_sigtramp;
- tp->current_line = current_line;
- tp->current_symtab = current_symtab;
- tp->step_sp = step_sp;
-}
-
-/* Return true if TP is an active thread. */
-static int
-thread_alive (struct thread_info *tp)
-{
- if (PIDGET (tp->ptid) == -1)
- return 0;
- if (!target_thread_alive (tp->ptid))
- {
- tp->ptid = pid_to_ptid (-1); /* Mark it as dead */
- return 0;
- }
- return 1;
-}
-
-static void
-prune_threads (void)
-{
- struct thread_info *tp, *next;
-
- for (tp = thread_list; tp; tp = next)
- {
- next = tp->next;
- if (!thread_alive (tp))
- delete_thread (tp->ptid);
- }
-}
-
-/* Print information about currently known threads
-
- * Note: this has the drawback that it _really_ switches
- * threads, which frees the frame cache. A no-side
- * effects info-threads command would be nicer.
- */
-
-static void
-info_threads_command (char *arg, int from_tty)
-{
- struct thread_info *tp;
- ptid_t current_ptid;
- struct frame_info *cur_frame;
- int saved_frame_level = selected_frame_level;
- int counter;
- char *extra_info;
-
- /* Avoid coredumps which would happen if we tried to access a NULL
- selected_frame. */
- if (!target_has_stack)
- error ("No stack.");
-
- prune_threads ();
- target_find_new_threads ();
- current_ptid = inferior_ptid;
- for (tp = thread_list; tp; tp = tp->next)
- {
- if (ptid_equal (tp->ptid, current_ptid))
- printf_filtered ("* ");
- else
- printf_filtered (" ");
-
-#ifdef HPUXHPPA
- printf_filtered ("%d %s", tp->num, target_tid_to_str (tp->ptid));
-#else
- printf_filtered ("%d %s", tp->num, target_pid_to_str (tp->ptid));
-#endif
-
- extra_info = target_extra_thread_info (tp);
- if (extra_info)
- printf_filtered (" (%s)", extra_info);
- puts_filtered (" ");
-
- switch_to_thread (tp->ptid);
- if (selected_frame)
- print_only_stack_frame (selected_frame, -1, 0);
- else
- printf_filtered ("[No stack.]\n");
- }
-
- switch_to_thread (current_ptid);
-
- /* Code below copied from "up_silently_base" in "stack.c".
- * It restores the frame set by the user before the "info threads"
- * command. We have finished the info-threads display by switching
- * back to the current thread. That switch has put us at the top
- * of the stack (leaf frame).
- */
- counter = saved_frame_level;
- cur_frame = find_relative_frame (selected_frame, &counter);
- if (counter != 0)
- {
- /* Ooops, can't restore, tell user where we are. */
- warning ("Couldn't restore frame in current thread, at frame 0");
- print_stack_frame (selected_frame, -1, 0);
- }
- else
- {
- select_frame (cur_frame, saved_frame_level);
- }
-
- /* re-show current frame. */
- show_stack_frame (cur_frame);
-}
-
-/* Switch from one thread to another. */
-
-static void
-switch_to_thread (ptid_t ptid)
-{
- if (ptid_equal (ptid, inferior_ptid))
- return;
-
- inferior_ptid = ptid;
- flush_cached_frames ();
- registers_changed ();
- stop_pc = read_pc ();
- select_frame (get_current_frame (), 0);
-}
-
-static void
-restore_current_thread (ptid_t ptid)
-{
- if (! ptid_equal (ptid, inferior_ptid))
- {
- switch_to_thread (ptid);
- print_stack_frame (get_current_frame (), 0, -1);
- }
-}
-
-struct current_thread_cleanup
-{
- ptid_t inferior_ptid;
-};
-
-static void
-do_restore_current_thread_cleanup (void *arg)
-{
- struct current_thread_cleanup *old = arg;
- restore_current_thread (old->inferior_ptid);
- xfree (old);
-}
-
-static struct cleanup *
-make_cleanup_restore_current_thread (ptid_t inferior_ptid)
-{
- struct current_thread_cleanup *old
- = xmalloc (sizeof (struct current_thread_cleanup));
- old->inferior_ptid = inferior_ptid;
- return make_cleanup (do_restore_current_thread_cleanup, old);
-}
-
-/* Apply a GDB command to a list of threads. List syntax is a whitespace
- seperated list of numbers, or ranges, or the keyword `all'. Ranges consist
- of two numbers seperated by a hyphen. Examples:
-
- thread apply 1 2 7 4 backtrace Apply backtrace cmd to threads 1,2,7,4
- thread apply 2-7 9 p foo(1) Apply p foo(1) cmd to threads 2->7 & 9
- thread apply all p x/i $pc Apply x/i $pc cmd to all threads
- */
-
-static void
-thread_apply_all_command (char *cmd, int from_tty)
-{
- struct thread_info *tp;
- struct cleanup *old_chain;
- struct cleanup *saved_cmd_cleanup_chain;
- char *saved_cmd;
-
- if (cmd == NULL || *cmd == '\000')
- error ("Please specify a command following the thread ID list");
-
- old_chain = make_cleanup_restore_current_thread (inferior_ptid);
-
- /* It is safe to update the thread list now, before
- traversing it for "thread apply all". MVS */
- target_find_new_threads ();
-
- /* Save a copy of the command in case it is clobbered by
- execute_command */
- saved_cmd = xstrdup (cmd);
- saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd);
- for (tp = thread_list; tp; tp = tp->next)
- if (thread_alive (tp))
- {
- switch_to_thread (tp->ptid);
-#ifdef HPUXHPPA
- printf_filtered ("\nThread %d (%s):\n",
- tp->num,
- target_tid_to_str (inferior_ptid));
-#else
- printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_pid_to_str (inferior_ptid));
-#endif
- execute_command (cmd, from_tty);
- strcpy (cmd, saved_cmd); /* Restore exact command used previously */
- }
-
- do_cleanups (saved_cmd_cleanup_chain);
- do_cleanups (old_chain);
-}
-
-static void
-thread_apply_command (char *tidlist, int from_tty)
-{
- char *cmd;
- char *p;
- struct cleanup *old_chain;
- struct cleanup *saved_cmd_cleanup_chain;
- char *saved_cmd;
-
- if (tidlist == NULL || *tidlist == '\000')
- error ("Please specify a thread ID list");
-
- for (cmd = tidlist; *cmd != '\000' && !isalpha (*cmd); cmd++);
-
- if (*cmd == '\000')
- error ("Please specify a command following the thread ID list");
-
- old_chain = make_cleanup_restore_current_thread (inferior_ptid);
-
- /* Save a copy of the command in case it is clobbered by
- execute_command */
- saved_cmd = xstrdup (cmd);
- saved_cmd_cleanup_chain = make_cleanup (xfree, (void *) saved_cmd);
- while (tidlist < cmd)
- {
- struct thread_info *tp;
- int start, end;
-
- start = strtol (tidlist, &p, 10);
- if (p == tidlist)
- error ("Error parsing %s", tidlist);
- tidlist = p;
-
- while (*tidlist == ' ' || *tidlist == '\t')
- tidlist++;
-
- if (*tidlist == '-') /* Got a range of IDs? */
- {
- tidlist++; /* Skip the - */
- end = strtol (tidlist, &p, 10);
- if (p == tidlist)
- error ("Error parsing %s", tidlist);
- tidlist = p;
-
- while (*tidlist == ' ' || *tidlist == '\t')
- tidlist++;
- }
- else
- end = start;
-
- for (; start <= end; start++)
- {
- tp = find_thread_id (start);
-
- if (!tp)
- warning ("Unknown thread %d.", start);
- else if (!thread_alive (tp))
- warning ("Thread %d has terminated.", start);
- else
- {
- switch_to_thread (tp->ptid);
-#ifdef HPUXHPPA
- printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_tid_to_str (inferior_ptid));
-#else
- printf_filtered ("\nThread %d (%s):\n", tp->num,
- target_pid_to_str (inferior_ptid));
-#endif
- execute_command (cmd, from_tty);
- strcpy (cmd, saved_cmd); /* Restore exact command used previously */
- }
- }
- }
-
- do_cleanups (saved_cmd_cleanup_chain);
- do_cleanups (old_chain);
-}
-
-/* Switch to the specified thread. Will dispatch off to thread_apply_command
- if prefix of arg is `apply'. */
-
-static void
-thread_command (char *tidstr, int from_tty)
-{
- if (!tidstr)
- {
- /* Don't generate an error, just say which thread is current. */
- if (target_has_stack)
- printf_filtered ("[Current thread is %d (%s)]\n",
- pid_to_thread_id (inferior_ptid),
-#if defined(HPUXHPPA)
- target_tid_to_str (inferior_ptid)
-#else
- target_pid_to_str (inferior_ptid)
-#endif
- );
- else
- error ("No stack.");
- return;
- }
-
- gdb_thread_select (uiout, tidstr);
-}
-
-static int
-do_captured_thread_select (struct ui_out *uiout,
- void *tidstr)
-{
- int num;
- struct thread_info *tp;
-
- num = value_as_long (parse_and_eval (tidstr));
-
- tp = find_thread_id (num);
-
- if (!tp)
- error ("Thread ID %d not known.", num);
-
- if (!thread_alive (tp))
- error ("Thread ID %d has terminated.\n", num);
-
- switch_to_thread (tp->ptid);
-
- ui_out_text (uiout, "[Switching to thread ");
- ui_out_field_int (uiout, "new-thread-id", pid_to_thread_id (inferior_ptid));
- ui_out_text (uiout, " (");
-#if defined(HPUXHPPA)
- ui_out_text (uiout, target_tid_to_str (inferior_ptid));
-#else
- ui_out_text (uiout, target_pid_to_str (inferior_ptid));
-#endif
- ui_out_text (uiout, ")]");
-
- print_stack_frame (selected_frame, selected_frame_level, 1);
- return GDB_RC_OK;
-}
-
-enum gdb_rc
-gdb_thread_select (struct ui_out *uiout,
- char *tidstr)
-{
- return catch_exceptions (uiout, do_captured_thread_select, tidstr,
- NULL, RETURN_MASK_ALL);
-}
-
-/* Commands with a prefix of `thread'. */
-struct cmd_list_element *thread_cmd_list = NULL;
-
-void
-_initialize_thread (void)
-{
- static struct cmd_list_element *thread_apply_list = NULL;
-
- add_info ("threads", info_threads_command,
- "IDs of currently known threads.");
-
- add_prefix_cmd ("thread", class_run, thread_command,
- "Use this command to switch between threads.\n\
-The new thread ID must be currently known.", &thread_cmd_list, "thread ", 1,
- &cmdlist);
-
- add_prefix_cmd ("apply", class_run, thread_apply_command,
- "Apply a command to a list of threads.",
- &thread_apply_list, "apply ", 1, &thread_cmd_list);
-
- add_cmd ("all", class_run, thread_apply_all_command,
- "Apply a command to all threads.",
- &thread_apply_list);
-
- if (!xdb_commands)
- add_com_alias ("t", "thread", class_run, 1);
-}
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