mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
96d887e830
make it non-static. * ada-lang.h (task_control_block): declaration moved from ada-task.c to ada-lang.h; this is needed to be able to implement the kill command in multi-task mode. (task_ptid): Ditto. (task_entry): Ditto. (task_list): Ditto. (ada_build_task_list): Ditto. * ada-lang.c: Conditionalize routines and data structures related to breakpoints, exceptions, completion, and symbol caching on GNAT_GDB, since these are not yet used in the submitted public sources. (ada_main_name): Editorial: Move definition out of exception-related code.
1448 lines
43 KiB
C
1448 lines
43 KiB
C
/* File ada-tasks.c: Ada tasking control for GDB
|
|
Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
|
|
Free Software Foundation, Inc.
|
|
Contributed by Ada Core Technologies, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
Authors: Roch-Alexandre Nomine Beguin, Arnaud Charlet <charlet@gnat.com>
|
|
|
|
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.
|
|
|
|
*/
|
|
|
|
#include <ctype.h>
|
|
#include <gdb_string.h>
|
|
#include "defs.h"
|
|
#include "command.h"
|
|
#include "value.h"
|
|
#include "language.h"
|
|
#include "inferior.h"
|
|
#include "symtab.h"
|
|
#include "target.h"
|
|
#include "gdbcore.h"
|
|
#include "gdbthread.h"
|
|
#include "regcache.h" /* for registers_changed */
|
|
|
|
#if defined (__fsu__) || defined (HAVE_SPYTHREAD) \
|
|
|| (defined(__alpha__) && defined(__osf__) && !defined(__alpha_vxworks))
|
|
#include <sys/procfs.h>
|
|
#endif
|
|
|
|
#if defined (__fsu__) || defined (HAVE_SPYTHREAD) \
|
|
|| (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET))
|
|
#include "gregset.h"
|
|
#endif
|
|
|
|
#ifdef I386_GNULINUX_TARGET
|
|
#include "gdb_thread_db.h"
|
|
#endif
|
|
|
|
#if defined (HAVE_SPYTHREAD)
|
|
#include "irix6-spyThread.h"
|
|
#endif
|
|
|
|
#include "ada-lang.h"
|
|
#include "observer.h"
|
|
|
|
enum task_states
|
|
{
|
|
Unactivated,
|
|
Runnable,
|
|
Terminated,
|
|
Activator_Sleep,
|
|
Acceptor_Sleep,
|
|
Entry_Caller_Sleep,
|
|
Async_Select_Sleep,
|
|
Delay_Sleep,
|
|
Master_Completion_Sleep,
|
|
Master_Phase_2_Sleep
|
|
};
|
|
|
|
/* The index of certain important fields in the Ada Task Control Block
|
|
record and sub-records. */
|
|
|
|
struct tcb_fieldnos
|
|
{
|
|
/* Fields in record Ada_Task_Control_Block. */
|
|
int common;
|
|
|
|
/* Fields in record Common_ATCB. */
|
|
int state;
|
|
int parent;
|
|
int priority;
|
|
int image;
|
|
int image_len; /* This field may be missing. */
|
|
int call;
|
|
int ll;
|
|
|
|
/* Fields in Task_Primitives.Private_Data. */
|
|
int ll_thread;
|
|
int ll_lwp; /* This field may be missing. */
|
|
};
|
|
|
|
#if defined (linux)
|
|
#define TASK_LWP(atcb) 0L
|
|
#else
|
|
#define TASK_LWP(atcb) extract_unsigned_integer (&(atcb).lwp, sizeof ((atcb).lwp))
|
|
#endif
|
|
|
|
/* FIXME: move all this conditional compilation in description
|
|
files or in configure.in */
|
|
|
|
#if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)
|
|
#define SPECIAL_THREAD_SUPPORT_ACTIVE() thread_support
|
|
#define SAVE_TASK_REGISTERS(task) \
|
|
do { fill_gregset (&gregset_saved, -1); \
|
|
fill_fpregset (&fpregset_saved, -1); \
|
|
} while (0)
|
|
#define RESTORE_TASK_REGISTERS(task) \
|
|
do { supply_gregset (&gregset_saved); \
|
|
supply_fpregset (&fpregset_saved); \
|
|
} while (0)
|
|
|
|
#define THREAD_FETCH_REGISTERS dec_thread_fetch_registers
|
|
#define GET_CURRENT_THREAD(PTID) dec_thread_get_current_thread ()
|
|
extern unsigned long dec_thread_get_current_thread (void);
|
|
extern int dec_thread_get_registers (gdb_gregset_t *, gdb_fpregset_t *);
|
|
extern int dec_thread_fetch_registers (void);
|
|
#endif
|
|
|
|
#ifdef __fsu__
|
|
#define SPECIAL_THREAD_SUPPORT_ACTIVE() \
|
|
(thread_support && pthread_kern_addr != 0)
|
|
#define SAVE_TASK_REGISTERS(task) \
|
|
do { \
|
|
if (pthread_kern_addr != 0) \
|
|
{ \
|
|
fill_gregset (&gregset_saved, -1); \
|
|
fill_fpregset (&fpregset_saved, -1); \
|
|
} \
|
|
} while (0)
|
|
#define RESTORE_TASK_REGISTERS(task) \
|
|
do { \
|
|
if (pthread_kern_addr != 0) \
|
|
{ \
|
|
supply_gregset (&gregset_saved); \
|
|
supply_fpregset (&fpregset_saved); \
|
|
} \
|
|
} while (0)
|
|
|
|
extern int fsu_thread_fetch_registers (void);
|
|
extern unsigned long fsu_thread_get_current_thread (void);
|
|
static int fsu_or_linux_thread_fetch_registers (void);
|
|
static long fsu_or_linux_thread_get_current_thread (ptid_t);
|
|
#define THREAD_FETCH_REGISTERS fsu_or_linux_thread_fetch_registers
|
|
#define GET_CURRENT_THREAD(PTID) fsu_or_linux_thread_get_current_thread (PTID)
|
|
#define PTHREAD_KERN "pthread_kern"
|
|
#endif
|
|
|
|
#ifdef I386_GNULINUX_TARGET
|
|
extern td_thrinfo_t thread_db_pid_to_thread_info (int pid);
|
|
extern int thread_db_tid_to_pid (void *tid);
|
|
#endif
|
|
|
|
#if defined(VXWORKS_TARGET)
|
|
#define GET_CURRENT_THREAD(PTID) (unsigned long) ptid_get_pid (PTID)
|
|
#define THREAD_FETCH_REGISTERS() (-1)
|
|
|
|
#elif defined (__WIN32__) || defined (__CYGWIN__) || defined (hpux)
|
|
#define GET_CURRENT_THREAD(PTID) ptid_get_pid (PTID)
|
|
#define THREAD_FETCH_REGISTERS() (-1)
|
|
#endif
|
|
|
|
#if defined (HAVE_SPYTHREAD)
|
|
#define GET_CURRENT_THREAD(PTID) (unsigned long) TIDGET (PTID)
|
|
#endif
|
|
|
|
#if !defined(GET_CURRENT_THREAD)
|
|
#define GET_CURRENT_THREAD(PTID) (unsigned long) ptid_get_tid (PTID)
|
|
#endif
|
|
|
|
#if !defined(THREAD_FETCH_REGISTERS)
|
|
#define THREAD_FETCH_REGISTERS() (target_fetch_registers (-1), 0)
|
|
#endif
|
|
|
|
#if !defined(SAVE_TASK_REGISTERS)
|
|
#define SAVE_TASK_REGISTERS(task)
|
|
#define RESTORE_TASK_REGISTERS(task)
|
|
#endif
|
|
|
|
#if !defined(SPECIAL_THREAD_SUPPORT_ACTIVE)
|
|
#define SPECIAL_THREAD_SUPPORT_ACTIVE() 0
|
|
#endif
|
|
|
|
#define KNOWN_TASKS_NAME "system__tasking__debug__known_tasks"
|
|
|
|
#define READ_MEMORY(addr, var) read_memory (addr, (char *) &var, sizeof (var))
|
|
|
|
/* If defined to 1, means that the thread ptids maintained by core GDB
|
|
follow this format : first field (pid) contains the tid
|
|
second field (lwp) contains 0
|
|
third field (tid) contains 0 */
|
|
#ifndef THREAD_PTID_CONTAINS_TID_NULL_NULL
|
|
#define THREAD_PTID_CONTAINS_TID_NULL_NULL (0)
|
|
#endif
|
|
|
|
/* If defined to 1, means that the thread ptids maintained by core GDB
|
|
follow this format: first field (pid) contains the LWP id
|
|
second field (lwp) contains 0
|
|
third field (tid) contains 0 */
|
|
#ifndef THREAD_PTID_CONTAINS_LWP_NULL_NULL
|
|
#define THREAD_PTID_CONTAINS_LWP_NULL_NULL (0)
|
|
#endif
|
|
|
|
/* If defined to 1, means that the thread ptids maintained by core GDB
|
|
follow this format: first field (pid) contains the PID
|
|
second field (lwp) contains 0
|
|
third field (tid) contains the TID */
|
|
#ifndef THREAD_PTID_CONTAINS_PID_NULL_TID
|
|
#define THREAD_PTID_CONTAINS_PID_NULL_TID (0)
|
|
#endif
|
|
|
|
/* If defined to 1, means that the thread ptids maintained by core GDB
|
|
follow this format: first field (pid) contains the PID
|
|
second field (lwp) contains the TID
|
|
third field (tid) contains the 0 */
|
|
|
|
#ifndef THREAD_PTID_CONTAINS_PID_TID_NULL
|
|
#define THREAD_PTID_CONTAINS_PID_TID_NULL (0)
|
|
#endif
|
|
|
|
/* If defined to 1, means that the thread id is not stored in the tid
|
|
field of the task_ptid, but rather in the lwp field. */
|
|
#ifndef ADA_THREAD_ID_IN_LWP
|
|
#define ADA_THREAD_ID_IN_LWP (0)
|
|
#endif
|
|
|
|
static int task_ptid_get_pid (task_ptid_t task_ptid);
|
|
static long task_ptid_get_lwp (task_ptid_t task_ptid);
|
|
static long task_ptid_get_tid (task_ptid_t task_ptid);
|
|
static task_ptid_t task_ptid_build (int pid, long lwp, long tid);
|
|
static ptid_t task_ptid_get_ptid (task_ptid_t task_ptid);
|
|
static long task_ptid_get_thread_id (task_ptid_t task_ptid);
|
|
|
|
static int task_is_alive (enum task_states state);
|
|
static CORE_ADDR get_self_id (ptid_t);
|
|
static int get_entry_number (CORE_ADDR);
|
|
static void get_tcb_types_info (struct type **atcb_type,
|
|
struct type **atcb_common_type,
|
|
struct type **atcb_ll_type,
|
|
struct tcb_fieldnos *atcb_fieldnos);
|
|
static void get_tcb_call_type_info (struct type **atcb_call_type,
|
|
int *atcb_call_self_fieldno);
|
|
static CORE_ADDR get_known_tasks_addr (void);
|
|
static int read_known_tasks_array (void);
|
|
static void value_as_string (char *dest, struct value *val, int length);
|
|
static struct task_control_block read_atcb (CORE_ADDR atcb_addr);
|
|
static CORE_ADDR read_caller (const CORE_ADDR call);
|
|
static void display_current_task_id (void);
|
|
static void task_command_1 (char *tidstr, int from_tty);
|
|
|
|
/* Ada-tasks observers. */
|
|
|
|
static void normal_stop_notification (void);
|
|
static void ada_tasks_attach_observers (void);
|
|
|
|
/* Global visible variables */
|
|
|
|
int ada__tasks_check_symbol_table = 1;
|
|
CORE_ADDR pthread_kern_addr = 0;
|
|
struct task_entry *task_list = NULL;
|
|
|
|
/* Local global variables. */
|
|
|
|
/* When non-zero, this flag indicates that the current task_list
|
|
is obsolete, and should be recomputed before it is accessed. */
|
|
static int stale_task_list_p = 1;
|
|
|
|
#if defined (__fsu__) || (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET))
|
|
gdb_gregset_t gregset_saved;
|
|
gdb_fpregset_t fpregset_saved;
|
|
#endif
|
|
|
|
/* The maximum number of tasks known to the Ada runtime */
|
|
static const int MAX_NUMBER_OF_KNOWN_TASKS = 1000;
|
|
|
|
/* the current task, as seen by the user. Modified everytime the user
|
|
does a task switch. */
|
|
static int current_task = -1;
|
|
|
|
unsigned long current_thread;
|
|
|
|
/* The task where the debugger stopped, giving control back to the user.
|
|
Not affected by task switching. Used to restore the registers before
|
|
continuing the inferior. */
|
|
int current_task_id = -1;
|
|
|
|
static char *task_states[] = {
|
|
"Unactivated",
|
|
"Runnable",
|
|
"Terminated",
|
|
"Child Activation Wait",
|
|
"Accept Statement",
|
|
"Waiting on entry call",
|
|
"Async Select Wait",
|
|
"Delay Sleep",
|
|
"Child Termination Wait",
|
|
"Wait Child in Term Alt",
|
|
"",
|
|
"",
|
|
"",
|
|
"",
|
|
"Asynchronous Hold"
|
|
};
|
|
|
|
/* Global internal types */
|
|
|
|
static char *long_task_states[] = {
|
|
"Unactivated",
|
|
"Runnable",
|
|
"Terminated",
|
|
"Waiting for child activation",
|
|
"Blocked in accept statement",
|
|
"Waiting on entry call",
|
|
"Asynchronous Selective Wait",
|
|
"Delay Sleep",
|
|
"Waiting for children termination",
|
|
"Waiting for children in terminate alternative",
|
|
"",
|
|
"",
|
|
"",
|
|
"",
|
|
"Asynchronous Hold"
|
|
};
|
|
|
|
/* Global internal variables */
|
|
|
|
static int highest_task_num = 0;
|
|
static int thread_support = 0; /* 1 if the thread library in use is
|
|
supported. FIXME: Not reinitialized
|
|
properly when program reloaded.
|
|
*/
|
|
#ifdef __fsu__
|
|
static int
|
|
fsu_or_linux_thread_fetch_registers (void)
|
|
{
|
|
if (pthread_kern_addr != 0)
|
|
return fsu_thread_fetch_registers ();
|
|
|
|
target_fetch_registers (-1);
|
|
return 0L;
|
|
}
|
|
|
|
static long
|
|
fsu_or_linux_thread_get_current_thread (ptid_t ptid)
|
|
{
|
|
if (pthread_kern_addr != 0)
|
|
return fsu_thread_get_current_thread ();
|
|
|
|
return ptid_get_tid (ptid);
|
|
}
|
|
|
|
#endif /* __fsu__ */
|
|
|
|
static int
|
|
add_task_entry (CORE_ADDR p_task_id, int index)
|
|
{
|
|
struct task_entry *new_task_entry = NULL;
|
|
struct task_entry *pt;
|
|
|
|
highest_task_num++;
|
|
new_task_entry = xmalloc (sizeof (struct task_entry));
|
|
new_task_entry->task_num = highest_task_num;
|
|
new_task_entry->task_id = p_task_id;
|
|
new_task_entry->atcb = read_atcb (p_task_id);
|
|
new_task_entry->known_tasks_index = index;
|
|
new_task_entry->task_ptid =
|
|
task_ptid_build (ptid_get_pid (inferior_ptid), /* ? */
|
|
TASK_LWP (new_task_entry->atcb),
|
|
new_task_entry->atcb.thread);
|
|
new_task_entry->next_task = NULL;
|
|
pt = task_list;
|
|
if (pt)
|
|
{
|
|
while (pt->next_task)
|
|
pt = pt->next_task;
|
|
pt->next_task = new_task_entry;
|
|
pt->stack_per = 0;
|
|
}
|
|
else
|
|
task_list = new_task_entry;
|
|
return new_task_entry->task_num;
|
|
}
|
|
|
|
static int
|
|
get_entry_number (CORE_ADDR p_task_id)
|
|
{
|
|
struct task_entry *pt;
|
|
|
|
pt = task_list;
|
|
while (pt != NULL)
|
|
{
|
|
if (pt->task_id == p_task_id)
|
|
return pt->task_num;
|
|
pt = pt->next_task;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct task_entry *
|
|
get_thread_entry_vptr (long thread)
|
|
{
|
|
struct task_entry *pt;
|
|
|
|
pt = task_list;
|
|
while (pt != NULL)
|
|
{
|
|
if (task_ptid_get_thread_id (pt->task_ptid) == thread)
|
|
return pt;
|
|
pt = pt->next_task;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct task_entry *
|
|
get_entry_vptr (int p_task_num)
|
|
{
|
|
struct task_entry *pt;
|
|
|
|
pt = task_list;
|
|
while (pt)
|
|
{
|
|
if (pt->task_num == p_task_num)
|
|
return pt;
|
|
pt = pt->next_task;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
init_task_list (void)
|
|
{
|
|
struct task_entry *pt, *old_pt;
|
|
|
|
target_find_new_threads ();
|
|
|
|
pt = task_list;
|
|
while (pt)
|
|
{
|
|
old_pt = pt;
|
|
pt = pt->next_task;
|
|
xfree (old_pt);
|
|
};
|
|
task_list = NULL;
|
|
highest_task_num = 0;
|
|
}
|
|
|
|
int
|
|
valid_task_id (int task)
|
|
{
|
|
return get_entry_vptr (task) != NULL;
|
|
}
|
|
|
|
/* Return the pid of a given task ptid. */
|
|
|
|
static int
|
|
task_ptid_get_pid (task_ptid_t task_ptid)
|
|
{
|
|
return task_ptid.pid;
|
|
}
|
|
|
|
/* Return the lwp of a given task ptid. */
|
|
|
|
static long
|
|
task_ptid_get_lwp (task_ptid_t task_ptid)
|
|
{
|
|
return task_ptid.lwp;
|
|
}
|
|
|
|
/* Return the tid of a given task ptid. */
|
|
|
|
static long
|
|
task_ptid_get_tid (task_ptid_t task_ptid)
|
|
{
|
|
return task_ptid.tid;
|
|
}
|
|
|
|
/* Build a task ptid from the associated pid, lwp, and tid. */
|
|
|
|
static task_ptid_t
|
|
task_ptid_build (int pid, long lwp, long tid)
|
|
{
|
|
task_ptid_t task_ptid;
|
|
|
|
task_ptid.pid = pid;
|
|
task_ptid.lwp = lwp;
|
|
task_ptid.tid = tid;
|
|
return task_ptid;
|
|
}
|
|
|
|
/* Translate a task ptid into a ptid (the ptid maintained by core GDB).
|
|
|
|
On most platforms, they are equivalent, and this function can be
|
|
regarded as the identity. However, there are other platforms where
|
|
the task ptid and the ptid are not equivalent. For instance, the task
|
|
LWP value is sometimes stored by GDB-core as a pid! This translation
|
|
therefore becomes necessary before invoking the GDB thread services. */
|
|
|
|
static ptid_t
|
|
task_ptid_get_ptid (task_ptid_t task_ptid)
|
|
{
|
|
ptid_t ptid;
|
|
|
|
if (THREAD_PTID_CONTAINS_TID_NULL_NULL)
|
|
ptid = ptid_build (task_ptid_get_tid (task_ptid), 0, 0);
|
|
else if (THREAD_PTID_CONTAINS_LWP_NULL_NULL)
|
|
ptid = ptid_build (task_ptid_get_lwp (task_ptid), 0, 0);
|
|
else if (THREAD_PTID_CONTAINS_PID_NULL_TID)
|
|
ptid = ptid_build (task_ptid_get_pid (task_ptid),
|
|
0, task_ptid_get_tid (task_ptid));
|
|
else if (THREAD_PTID_CONTAINS_PID_TID_NULL)
|
|
ptid = ptid_build (task_ptid_get_pid (task_ptid),
|
|
task_ptid_get_tid (task_ptid), 0);
|
|
else
|
|
ptid = ptid_build (task_ptid_get_pid (task_ptid),
|
|
task_ptid_get_lwp (task_ptid),
|
|
task_ptid_get_tid (task_ptid));
|
|
|
|
return ptid;
|
|
}
|
|
|
|
/* Extract and return the thread_id for the given TASK_PTID. */
|
|
|
|
static long
|
|
task_ptid_get_thread_id (task_ptid_t task_ptid)
|
|
{
|
|
/* On most platforms, the thread_id is stored in task_ptid.tid.
|
|
Unfortunately, some other platforms store it as the task_ptid.lwp... */
|
|
|
|
if (ADA_THREAD_ID_IN_LWP)
|
|
return task_ptid_get_lwp (task_ptid);
|
|
else
|
|
return task_ptid_get_tid (task_ptid);
|
|
}
|
|
|
|
/* Return non-zero iff the task STATE corresponds to a non-terminated
|
|
task state. */
|
|
|
|
static int
|
|
task_is_alive (enum task_states state)
|
|
{
|
|
return (state != Terminated);
|
|
}
|
|
|
|
static CORE_ADDR
|
|
get_self_id (ptid_t ptid)
|
|
{
|
|
#ifdef GNAT_GDB
|
|
struct task_entry *ent;
|
|
|
|
#if !((defined(sun) && defined(__SVR4)) || defined(VXWORKS_TARGET) || defined(__WIN32__))
|
|
if (thread_support)
|
|
#endif
|
|
{
|
|
ent = get_thread_entry_vptr (GET_CURRENT_THREAD (ptid));
|
|
return ent ? ent->task_id : 0;
|
|
}
|
|
#endif
|
|
|
|
/* FIXME: calling a function in the inferior with a multithreaded application
|
|
is not reliable, so return a null address if there is no safe way to
|
|
get the current task */
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
ada_get_current_task (ptid_t ptid)
|
|
{
|
|
int result;
|
|
|
|
if (current_language->la_language != language_ada)
|
|
return -1;
|
|
|
|
result = get_entry_number (get_self_id (ptid));
|
|
|
|
/* return -1 if not found */
|
|
return result == 0 ? -1 : result;
|
|
}
|
|
|
|
/* Get from the debugging information the type description of all types
|
|
related to the Ada Task Control Block that will be needed in order to
|
|
read the list of known tasks in the Ada runtime. Also return the
|
|
associated ATCB_FIELDNOS.
|
|
|
|
Error handling: Any data missing from the debugging info will cause
|
|
an error to be raised, and none of the return values to be set.
|
|
Users of this function can depend on the fact that all or none of the
|
|
return values will be set. */
|
|
|
|
static void
|
|
get_tcb_types_info (struct type **atcb_type,
|
|
struct type **atcb_common_type,
|
|
struct type **atcb_ll_type,
|
|
struct tcb_fieldnos *atcb_fieldnos)
|
|
{
|
|
struct type *type;
|
|
struct type *common_type;
|
|
struct type *ll_type;
|
|
struct tcb_fieldnos fieldnos;
|
|
|
|
#ifndef ADA_RETAIN_DOTS
|
|
const char *atcb_name = "system__tasking__ada_task_control_block___XVE";
|
|
const char *common_atcb_name = "system__tasking__common_atcb";
|
|
const char *private_data_name = "system__task_primitives__private_data";
|
|
#else
|
|
const char *atcb_name = "system.tasking.ada_task_control_block___XVE";
|
|
const char *common_atcb_name = "system.tasking.common_atcb";
|
|
const char *private_data_name = "system.task_primitives.private_data";
|
|
#endif
|
|
|
|
const struct symbol *atcb_sym =
|
|
lookup_symbol (atcb_name, NULL, VAR_DOMAIN, NULL, NULL);
|
|
const struct symbol *common_atcb_sym =
|
|
lookup_symbol (common_atcb_name, NULL, VAR_DOMAIN, NULL, NULL);
|
|
const struct symbol *private_data_sym =
|
|
lookup_symbol (private_data_name, NULL, VAR_DOMAIN, NULL, NULL);
|
|
|
|
if (atcb_sym == NULL || atcb_sym->type == NULL)
|
|
error ("Can not find Ada_Task_Control_Block type. Aborting");
|
|
if (common_atcb_sym == NULL || common_atcb_sym->type == NULL)
|
|
error ("Can not find Common_ATCB type. Aborting");
|
|
if (private_data_sym == NULL || private_data_sym->type == NULL)
|
|
error ("Can not find Private_Data type. Aborting");
|
|
|
|
/* Get a static representation of the type record Ada_Task_Control_Block. */
|
|
type = atcb_sym->type;
|
|
type = ada_template_to_fixed_record_type_1 (type, NULL, 0, NULL, 0);
|
|
|
|
/* Get the type for Ada_Task_Control_Block.Common. */
|
|
common_type = common_atcb_sym->type;
|
|
|
|
/* Get the type for Ada_Task_Control_Bloc.Common.Call.LL. */
|
|
ll_type = private_data_sym->type;
|
|
|
|
/* Get the field indices. */
|
|
fieldnos.common = ada_get_field_index (type, "common", 0);
|
|
fieldnos.state = ada_get_field_index (common_type, "state", 0);
|
|
fieldnos.parent = ada_get_field_index (common_type, "parent", 0);
|
|
fieldnos.priority = ada_get_field_index (common_type, "base_priority", 0);
|
|
fieldnos.image = ada_get_field_index (common_type, "task_image", 0);
|
|
fieldnos.image_len = ada_get_field_index (common_type, "task_image_len", 1);
|
|
fieldnos.call = ada_get_field_index (common_type, "call", 0);
|
|
fieldnos.ll = ada_get_field_index (common_type, "ll", 0);
|
|
fieldnos.ll_thread = ada_get_field_index (ll_type, "thread", 0);
|
|
fieldnos.ll_lwp = ada_get_field_index (ll_type, "lwp", 1);
|
|
|
|
/* On certain platforms such as x86-windows, the "lwp" field has been
|
|
named "thread_id". This field will likely be renamed in the future,
|
|
but we need to support both possibilities to avoid an unnecessary
|
|
dependency on a recent compiler. We therefore try locating the
|
|
"thread_id" field in place of the "lwp" field if we did not find
|
|
the latter. */
|
|
if (fieldnos.ll_lwp < 0)
|
|
fieldnos.ll_lwp = ada_get_field_index (ll_type, "thread_id", 1);
|
|
|
|
/* Set all the out parameters all at once, now that we are certain
|
|
that there are no potential error() anymore. */
|
|
*atcb_type = type;
|
|
*atcb_common_type = common_type;
|
|
*atcb_ll_type = ll_type;
|
|
*atcb_fieldnos = fieldnos;
|
|
}
|
|
|
|
/* Get from the debugging information the type description of the
|
|
record type Entry_Call_Record (this is the type of the field
|
|
Call.all in the Common_ATCB record type). Also return the index
|
|
of the field "Self" in Entry_Call_Record.
|
|
|
|
Error handling: Any data missing from the debugging info will cause
|
|
an error to be raised, and none of the return values to be set.
|
|
Users of this function can depend on the fact that all or none of the
|
|
return values will be set. */
|
|
|
|
static void
|
|
get_tcb_call_type_info (struct type **atcb_call_type,
|
|
int *atcb_call_self_fieldno)
|
|
{
|
|
struct type *call_type;
|
|
int call_self_fieldno;
|
|
|
|
#ifndef ADA_RETAIN_DOTS
|
|
const char *entry_call_record_name = "system__tasking__entry_call_record";
|
|
#else
|
|
const char *entry_call_record_name = "system.tasking.entry_call_record";
|
|
#endif
|
|
|
|
const struct symbol *entry_call_record_sym =
|
|
lookup_symbol (entry_call_record_name, NULL, VAR_DOMAIN, NULL, NULL);
|
|
|
|
if (entry_call_record_sym == NULL || entry_call_record_sym->type == NULL)
|
|
error ("Can not find Entry_Call_Record type. Aborting");
|
|
|
|
call_type = entry_call_record_sym->type;
|
|
call_self_fieldno = ada_get_field_index (call_type, "self", 0);
|
|
|
|
/* Set all the out parameters all at once, now that we are certain
|
|
that there are no potential error() anymore. */
|
|
*atcb_call_type = call_type;
|
|
*atcb_call_self_fieldno = call_self_fieldno;
|
|
}
|
|
|
|
/* Return the address of the Known_Tasks array maintained in
|
|
the Ada Runtime. Return NULL if the array could not be found,
|
|
meaning that the inferior program probably does not use tasking.
|
|
|
|
In order to provide a fast response time, this function caches
|
|
the Known_Tasks array address after the lookup during the first
|
|
call. Subsequent calls will simply return this cached address. */
|
|
|
|
static CORE_ADDR
|
|
get_known_tasks_addr (void)
|
|
{
|
|
static CORE_ADDR known_tasks_addr = 0;
|
|
|
|
if (ada__tasks_check_symbol_table)
|
|
{
|
|
struct symbol *sym;
|
|
struct minimal_symbol *msym;
|
|
|
|
thread_support = 0;
|
|
#if (defined(__alpha__) && defined(__osf__) & !defined(VXWORKS_TARGET)) \
|
|
|| defined (_AIX) || defined (__CYGWIN__)
|
|
thread_support = 1;
|
|
#elif defined (__fsu__)
|
|
msym = lookup_minimal_symbol (PTHREAD_KERN, NULL, NULL);
|
|
if (msym != NULL)
|
|
{
|
|
pthread_kern_addr = SYMBOL_VALUE_ADDRESS (msym);
|
|
thread_support = 1;
|
|
}
|
|
#elif defined (HAVE_SPYTHREAD)
|
|
thread_support = libspy_enabled;
|
|
#endif
|
|
|
|
#ifdef I386_GNULINUX_TARGET
|
|
/* We support threads via the Linux Threads... */
|
|
thread_support = 1;
|
|
#endif
|
|
|
|
msym = lookup_minimal_symbol (KNOWN_TASKS_NAME, NULL, NULL);
|
|
if (msym != NULL)
|
|
known_tasks_addr = SYMBOL_VALUE_ADDRESS (msym);
|
|
else
|
|
#ifndef VXWORKS_TARGET
|
|
return 0;
|
|
#else
|
|
{
|
|
if (target_lookup_symbol (KNOWN_TASKS_NAME, &known_tasks_addr) != 0)
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* FIXME: brobecker 2003-03-05: Here would be a much better place
|
|
to attach the ada-tasks observers, instead of doing this
|
|
unconditionaly in _initialize_tasks. This would avoid an
|
|
unecessary notification when the inferior does not use tasking
|
|
or as long as the user does not use the ada-tasks commands.
|
|
Unfortunately, this is not possible for the moment: the current
|
|
code resets ada__tasks_check_symbol_table back to 1 whenever
|
|
symbols for a new program are being loaded. If we place the
|
|
observers intialization here, we will end up adding new observers
|
|
everytime we do the check for Ada tasking-related symbols
|
|
above. This would currently have benign effects, but is still
|
|
undesirable. The cleanest approach is probably to create a new
|
|
observer to notify us when the user is debugging a new program.
|
|
We would then reset ada__tasks_check_symbol_table back to 1
|
|
during the notification, but also detach all observers.
|
|
BTW: observers are probably not reentrant, so detaching during
|
|
a notification may not be the safest thing to do... Sigh...
|
|
But creating the new observer would be a good idea in any case,
|
|
since this allow us to make ada__tasks_check_symbol_table
|
|
static, which is a good bonus. */
|
|
ada__tasks_check_symbol_table = 0;
|
|
}
|
|
|
|
return known_tasks_addr;
|
|
}
|
|
|
|
/* Read the Known_Tasks array from the inferior memory, and store
|
|
it in task_list. Return non-zero upon success. */
|
|
|
|
static int
|
|
read_known_tasks_array (void)
|
|
{
|
|
const int target_ptr_byte = TARGET_PTR_BIT / TARGET_CHAR_BIT;
|
|
const int temp_tasks_size = target_ptr_byte * MAX_NUMBER_OF_KNOWN_TASKS;
|
|
const CORE_ADDR known_tasks_addr = get_known_tasks_addr ();
|
|
char *temp_tasks = (char *) alloca (temp_tasks_size);
|
|
CORE_ADDR temp_task;
|
|
int i;
|
|
|
|
/* Step 1: Clear the current list, if any. */
|
|
init_task_list ();
|
|
|
|
/* If the application does not use task, then no more needs to be done.
|
|
It is important to have the task list cleared (see above) before we
|
|
return, as we don't want a stale task list to be used... This can
|
|
happen for instance when debugging a non-multitasking program after
|
|
having debugged a multitasking one. */
|
|
if (known_tasks_addr == 0)
|
|
return 0;
|
|
|
|
/* Step 2: Build a new list by reading the ATCBs from the Known_Tasks
|
|
array in the Ada runtime. */
|
|
read_memory (known_tasks_addr, temp_tasks, temp_tasks_size);
|
|
for (i = 0; i < MAX_NUMBER_OF_KNOWN_TASKS; i++)
|
|
{
|
|
temp_task = extract_typed_address (temp_tasks + i * target_ptr_byte,
|
|
builtin_type_void_data_ptr);
|
|
|
|
if (temp_task != 0)
|
|
{
|
|
if (get_entry_number (temp_task) == 0)
|
|
add_task_entry (temp_task, i);
|
|
}
|
|
}
|
|
|
|
/* Step 3: Unset stale_task_list_p, to avoid re-reading the Known_Tasks
|
|
array unless needed. Then report a success. */
|
|
stale_task_list_p = 0;
|
|
return 1;
|
|
}
|
|
|
|
/* Builds the task_list by reading the Known_Tasks array from
|
|
the inferior. Prints an appropriate message and returns non-zero
|
|
if it failed to build this list. */
|
|
|
|
int
|
|
ada_build_task_list (void)
|
|
{
|
|
if (!target_has_stack)
|
|
error ("No stack");
|
|
|
|
if (stale_task_list_p)
|
|
read_known_tasks_array ();
|
|
|
|
if (task_list == NULL)
|
|
{
|
|
printf_filtered ("Your application does not use any Ada task.\n");
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Extract the contents of the value as a string whose length is LENGTH,
|
|
and store the result in DEST. */
|
|
|
|
static void
|
|
value_as_string (char *dest, struct value *val, int length)
|
|
{
|
|
memcpy (dest, VALUE_CONTENTS (val), length);
|
|
}
|
|
|
|
/* Extract the string image from the fat string corresponding to VAL,
|
|
and store it in DEST. The length of the string is stored in LEN. If
|
|
the string length is greater than MAX_LEN, then truncate the result
|
|
to the first MAX_LEN characters of the fat string. */
|
|
|
|
static void
|
|
read_fat_string_value (char *dest, int *len, struct value *val, int max_len)
|
|
{
|
|
struct value *array_val;
|
|
struct value *bounds_val;
|
|
|
|
/* The following variables are made static to avoid recomputing them
|
|
each time this function is called. */
|
|
static int initialize_fieldnos = 1;
|
|
static int array_fieldno;
|
|
static int bounds_fieldno;
|
|
static int upper_bound_fieldno;
|
|
|
|
/* Get the index of the fields that we will need to read in order
|
|
to extract the string from the fat string. */
|
|
if (initialize_fieldnos)
|
|
{
|
|
struct type *type = VALUE_TYPE (val);
|
|
struct type *bounds_type;
|
|
|
|
array_fieldno = ada_get_field_index (type, "P_ARRAY", 0);
|
|
bounds_fieldno = ada_get_field_index (type, "P_BOUNDS", 0);
|
|
|
|
bounds_type = TYPE_FIELD_TYPE (type, bounds_fieldno);
|
|
if (TYPE_CODE (bounds_type) == TYPE_CODE_PTR)
|
|
bounds_type = TYPE_TARGET_TYPE (bounds_type);
|
|
if (TYPE_CODE (bounds_type) != TYPE_CODE_STRUCT)
|
|
error ("Unknown task name format. Aborting");
|
|
upper_bound_fieldno = ada_get_field_index (bounds_type, "UB0", 0);
|
|
|
|
initialize_fieldnos = 0;
|
|
}
|
|
|
|
/* Get the size of the task image by checking the value of the bounds.
|
|
The lower bound is always 1, so we only need to read the upper bound. */
|
|
bounds_val = value_ind (value_field (val, bounds_fieldno));
|
|
*len = value_as_long (value_field (bounds_val, upper_bound_fieldno));
|
|
|
|
/* Make sure that we do not read more than max_len characters... */
|
|
if (*len > max_len)
|
|
*len = max_len;
|
|
|
|
/* Extract LEN characters from the fat string. */
|
|
array_val = value_ind (value_field (val, array_fieldno));
|
|
read_memory (VALUE_ADDRESS (array_val), dest, *len);
|
|
}
|
|
|
|
/* Read the ATCB stored at ATCB_ADDR from the inferior memory. */
|
|
|
|
static struct task_control_block
|
|
read_atcb (CORE_ADDR atcb_addr)
|
|
{
|
|
/* The type description for the ATCB record and subrecords, and
|
|
the associated tcb_fieldnos. For efficiency reasons, these are made
|
|
static so that we can compute them only once the first time and
|
|
reuse them later. */
|
|
static struct type *atcb_type = NULL;
|
|
static struct type *atcb_common_type = NULL;
|
|
static struct type *atcb_ll_type = NULL;
|
|
static struct tcb_fieldnos fieldno;
|
|
|
|
struct task_control_block result;
|
|
struct value *tcb_value;
|
|
struct value *ll_value;
|
|
|
|
if (atcb_type == NULL)
|
|
get_tcb_types_info (&atcb_type, &atcb_common_type, &atcb_ll_type, &fieldno);
|
|
|
|
tcb_value = value_from_contents_and_address (atcb_type, NULL, atcb_addr);
|
|
tcb_value = value_field (tcb_value, fieldno.common);
|
|
|
|
result.state = value_as_long (value_field (tcb_value, fieldno.state));
|
|
result.parent = value_as_address (value_field (tcb_value, fieldno.parent));
|
|
result.priority = value_as_long (value_field (tcb_value, fieldno.priority));
|
|
|
|
/* Depending on the GNAT version used, the task image is either a fat
|
|
string, or a thin array of characters. Older versions of GNAT used
|
|
to use fat strings, and therefore did not need an extra field in
|
|
the ATCB to store the string length. For efficiency reasons, newer
|
|
versions of GNAT replaced the fat string by a static buffer, but this
|
|
also required the addition of a new field named "Image_Len" containing
|
|
the length of the task name. The method used to extract the task name
|
|
is selected depending on the existence of this field. */
|
|
if (fieldno.image_len == -1)
|
|
{
|
|
read_fat_string_value (result.image, &result.image_len,
|
|
value_field (tcb_value, fieldno.image),
|
|
sizeof (result.image));
|
|
}
|
|
else
|
|
{
|
|
value_as_string (result.image, value_field (tcb_value, fieldno.image),
|
|
sizeof (result.image));
|
|
result.image_len =
|
|
value_as_long (value_field (tcb_value, fieldno.image_len));
|
|
}
|
|
|
|
result.call = value_as_address (value_field (tcb_value, fieldno.call));
|
|
|
|
ll_value = value_field (tcb_value, fieldno.ll);
|
|
result.thread = value_as_address (value_field (ll_value, fieldno.ll_thread));
|
|
if (fieldno.ll_lwp >= 0)
|
|
result.lwp = value_as_address (value_field (ll_value, fieldno.ll_lwp));
|
|
else
|
|
result.lwp = 0;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* Read the ID of the task with which a task is attempting a rendez-vous
|
|
from the address of its Entry_Call_Record in the Ada TCB.
|
|
If the address of the Entry_Call_Record is null, then return null. */
|
|
|
|
static CORE_ADDR
|
|
read_caller (const CORE_ADDR call)
|
|
{
|
|
/* The type description for the Entry_Call_Record, and the index of
|
|
the field "Self". For efficiency reasons, these are made static
|
|
so that we can compute them only once the first time and reuse them
|
|
later. */
|
|
static struct type *atcb_call_type;
|
|
static int self_fieldno = -1;
|
|
|
|
struct value *call_value;
|
|
|
|
if (call == 0)
|
|
return 0;
|
|
|
|
if (atcb_call_type == NULL)
|
|
get_tcb_call_type_info (&atcb_call_type, &self_fieldno);
|
|
|
|
call_value = value_from_contents_and_address (atcb_call_type, NULL, call);
|
|
return value_as_address (value_field (call_value, self_fieldno));
|
|
}
|
|
|
|
#if 0
|
|
/* FIXME: Now modified and back in breakpoint.c */
|
|
/* breakpoint_task_match (PC) returns true if the breakpoint at PC
|
|
is valid for current task. */
|
|
|
|
int
|
|
breakpoint_task_match (CORE_ADDR pc)
|
|
{
|
|
const int this_task = get_current_task ();
|
|
const struct breakpoint *breakpoints = get_breakpoint_chain ();
|
|
const struct breakpoint *b;
|
|
|
|
for (b = breakpoints; b; b = b->next)
|
|
{
|
|
if (b->enable_state != bp_disabled
|
|
&& b->enable_state != bp_shlib_disabled
|
|
&& (b->address == 0 || b->address == pc)
|
|
&& (b->task == 0 || b->task == this_task))
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* Print detailed information about specified task */
|
|
|
|
static void
|
|
info_task (char *arg, int from_tty)
|
|
{
|
|
#ifdef GNAT_GDB
|
|
struct task_entry *pt, *pt2;
|
|
CORE_ADDR caller;
|
|
int num;
|
|
|
|
if (current_language->la_language != language_ada)
|
|
{
|
|
printf_filtered ("The current language does not support tasks.\n");
|
|
return;
|
|
}
|
|
|
|
target_find_new_threads ();
|
|
|
|
pt = get_entry_vptr (atoi (arg));
|
|
if (pt == NULL)
|
|
{
|
|
printf_filtered ("Task %s not found.\n", arg);
|
|
return;
|
|
}
|
|
|
|
/* print the Ada task id */
|
|
printf_filtered ("Ada Task: %s\n", paddr_nz (pt->task_id));
|
|
|
|
/* print the name of the task */
|
|
if (pt->atcb.image_len != 0)
|
|
printf_filtered ("Name: %.*s\n", pt->atcb.image_len, pt->atcb.image);
|
|
else
|
|
printf_filtered ("<no name>\n");
|
|
|
|
/* print the thread id */
|
|
|
|
if (task_ptid_get_tid (pt->task_ptid) < 65536)
|
|
printf_filtered
|
|
("Thread: %ld\n", (long int) task_ptid_get_tid (pt->task_ptid));
|
|
else
|
|
printf_filtered
|
|
("Thread: %#lx\n", (long int) task_ptid_get_tid (pt->task_ptid));
|
|
|
|
if (task_ptid_get_lwp (pt->task_ptid) != 0)
|
|
{
|
|
if ((long) task_ptid_get_lwp (pt->task_ptid) < 65536)
|
|
printf_filtered
|
|
("LWP: %ld\n", (long int) task_ptid_get_lwp (pt->task_ptid));
|
|
else
|
|
printf_filtered
|
|
("LWP: %#lx\n", (long int) task_ptid_get_lwp (pt->task_ptid));
|
|
}
|
|
|
|
/* print the parent gdb task id */
|
|
num = get_entry_number (pt->atcb.parent);
|
|
if (num != 0)
|
|
{
|
|
printf_filtered ("Parent: %d", num);
|
|
pt2 = get_entry_vptr (num);
|
|
|
|
/* print the name of the task */
|
|
if (pt2->atcb.image_len != 0)
|
|
printf_filtered (" (%.*s)\n", pt2->atcb.image_len, pt2->atcb.image);
|
|
else
|
|
printf_filtered ("\n");
|
|
}
|
|
else
|
|
printf_filtered ("No parent\n");
|
|
|
|
/* print the base priority of the task */
|
|
printf_filtered ("Base Priority: %d\n", pt->atcb.priority);
|
|
|
|
/* print the current state of the task */
|
|
|
|
/* check if this task is accepting a rendezvous */
|
|
caller = read_caller (pt->atcb.call);
|
|
if (caller != 0)
|
|
{
|
|
num = get_entry_number (caller);
|
|
printf_filtered ("Accepting rendezvous with %d", num);
|
|
|
|
if (num != 0)
|
|
{
|
|
pt2 = get_entry_vptr (num);
|
|
|
|
/* print the name of the task */
|
|
if (pt2->atcb.image_len != 0) {
|
|
printf_filtered (" (%.*s)\n", pt2->atcb.image_len, pt2->atcb.image);
|
|
}
|
|
else
|
|
printf_filtered ("\n");
|
|
}
|
|
else
|
|
printf_filtered ("\n");
|
|
}
|
|
else
|
|
printf_filtered ("State: %s\n", long_task_states[pt->atcb.state]);
|
|
#endif
|
|
}
|
|
|
|
/* Print information about currently known tasks */
|
|
|
|
static void
|
|
info_tasks (char *arg, int from_tty)
|
|
{
|
|
#ifdef GNAT_GDB
|
|
struct task_entry *pt;
|
|
CORE_ADDR caller;
|
|
long thread_id = 0L;
|
|
int size;
|
|
char car;
|
|
ptid_t current_ptid;
|
|
|
|
#if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)
|
|
pthreadTeb_t thr;
|
|
gdb_gregset_t regs;
|
|
#endif
|
|
|
|
current_ptid = inferior_ptid;
|
|
|
|
#if !((defined(sun) && defined(__SVR4)) || defined(VXWORKS_TARGET) || defined(__WIN32__) || defined (hpux))
|
|
if (thread_support)
|
|
#endif
|
|
thread_id = GET_CURRENT_THREAD (inferior_ptid);
|
|
|
|
/* print the header */
|
|
|
|
#if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)
|
|
printf_filtered
|
|
(" ID TID P-ID Pri Stack %% State Name\n");
|
|
#else
|
|
printf_filtered (" ID TID P-ID Pri State Name\n");
|
|
#endif
|
|
|
|
/* Now that we have a list of task id's, we can print them */
|
|
pt = task_list;
|
|
while (pt)
|
|
{
|
|
/* print a star if this task is the current one */
|
|
if (thread_id)
|
|
#if defined (__WIN32__) || defined (SGI) || defined (hpux)
|
|
printf_filtered
|
|
(task_ptid_get_lwp (pt->task_ptid) == thread_id ? "*" : " ");
|
|
#else
|
|
printf_filtered
|
|
(task_ptid_get_thread_id (pt->task_ptid) == thread_id ? "*" : " ");
|
|
#endif
|
|
|
|
/* print the gdb task id */
|
|
printf_filtered ("%3d", pt->task_num);
|
|
|
|
/* print the Ada task id */
|
|
printf_filtered (" %9lx", (long) pt->task_id);
|
|
|
|
/* print the parent gdb task id */
|
|
printf_filtered (" %4d", get_entry_number (pt->atcb.parent));
|
|
|
|
/* print the base priority of the task */
|
|
printf_filtered (" %3d", pt->atcb.priority);
|
|
|
|
#if defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET)
|
|
if (pt->task_num == 1 || pt->atcb.state == Terminated)
|
|
{
|
|
printf_filtered (" Unknown");
|
|
goto next;
|
|
}
|
|
|
|
READ_MEMORY (pt->atcb.thread, thr);
|
|
switch_to_thread (task_ptid_get_ptid (pt->task_ptid));
|
|
/* ??? Brobecker 2003-03-13: Not sure what the next line is used for.
|
|
And even if useful, it should probably be replaced by call to
|
|
task_ptid_get_thread_id. */
|
|
current_thread = task_ptid_get_tid (pt->task_ptid);
|
|
regs.regs[SP_REGNUM] = 0;
|
|
if (dec_thread_get_registers (®s, NULL) == 0)
|
|
{
|
|
pt->stack_per = (100 * ((long) thr.__stack_base -
|
|
regs.regs[SP_REGNUM])) / thr.__stack_size;
|
|
/* if the thread is terminated but still there, the
|
|
stack_base/size values are erroneous. Try to patch it */
|
|
if (pt->stack_per < 0 || pt->stack_per > 100)
|
|
pt->stack_per = 0;
|
|
}
|
|
else
|
|
{
|
|
/* Set stack_per to an invalid value to signal that we did not
|
|
manage to compute its value. */
|
|
pt->stack_per = -1;
|
|
}
|
|
|
|
/* print information about stack space used in the thread */
|
|
if (thr.__stack_size < 1024 * 1024)
|
|
{
|
|
size = thr.__stack_size / 1024;
|
|
car = 'K';
|
|
}
|
|
else if (thr.__stack_size < 1024 * 1024 * 1024)
|
|
{
|
|
size = thr.__stack_size / 1024 / 1024;
|
|
car = 'M';
|
|
}
|
|
else /* Who knows... */
|
|
{
|
|
size = thr.__stack_size / 1024 / 1024 / 1024;
|
|
car = 'G';
|
|
}
|
|
|
|
/* print the stack usage in percent, if available. */
|
|
if (pt->stack_per != -1)
|
|
printf_filtered (" %4d%c %2d", size, car, pt->stack_per);
|
|
else
|
|
{
|
|
/* This error is not serious enough that we should raise
|
|
an internal error, but print '???' to make it unambiguous
|
|
that we failed to compute this value. */
|
|
printf_filtered (" ???");
|
|
}
|
|
|
|
next:
|
|
#endif
|
|
|
|
/* print the current state of the task */
|
|
|
|
/* check if this task is accepting a rendezvous */
|
|
caller = read_caller (pt->atcb.call);
|
|
if (caller != 0)
|
|
printf_filtered (" Accepting RV with %-4d",
|
|
get_entry_number (caller));
|
|
else
|
|
{
|
|
#if defined (__WIN32__) || defined (SGI) || defined (hpux)
|
|
if (pt->atcb.state == Runnable
|
|
&& (thread_id
|
|
&& task_ptid_get_lwp (pt->task_ptid) == thread_id))
|
|
#else
|
|
if (pt->atcb.state == Runnable
|
|
&& (thread_id
|
|
&& task_ptid_get_thread_id (pt->task_ptid) == thread_id))
|
|
#endif
|
|
/* Replace "Runnable" by "Running" if this is the current task */
|
|
printf_filtered (" %-22s", "Running");
|
|
else
|
|
printf_filtered (" %-22s", task_states[pt->atcb.state]);
|
|
}
|
|
|
|
/* finally, print the name of the task */
|
|
if (pt->atcb.image_len != 0) {
|
|
printf_filtered (" %.*s\n", pt->atcb.image_len, pt->atcb.image);
|
|
}
|
|
else
|
|
printf_filtered (" <no name>\n");
|
|
|
|
pt = pt->next_task;
|
|
}
|
|
if (!ptid_equal (inferior_ptid, current_ptid))
|
|
switch_to_thread (current_ptid);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
info_tasks_command (char *arg, int from_tty)
|
|
{
|
|
const int task_list_built = ada_build_task_list ();
|
|
|
|
if (!task_list_built)
|
|
return;
|
|
|
|
if (arg == NULL || *arg == '\000')
|
|
info_tasks (arg, from_tty);
|
|
else
|
|
info_task (arg, from_tty);
|
|
}
|
|
|
|
/* Switch to task indicated by NEW_TASK. Return 0 iff successful. */
|
|
|
|
static int
|
|
switch_to_task (struct task_entry *new_task)
|
|
{
|
|
#ifdef GNAT_GDB
|
|
/* Raise an error if task-switching is currently not allowed. */
|
|
if (!THREAD_SWITCH_ALLOWED ())
|
|
error ("Task switching is currently not allowed.");
|
|
|
|
if (!task_is_alive (new_task->atcb.state))
|
|
error ("Can not switch to task %d: Task is no longer running",
|
|
new_task->task_num);
|
|
|
|
current_task = new_task->task_num;
|
|
current_thread = task_ptid_get_thread_id (new_task->task_ptid);
|
|
|
|
if (current_task_id == -1)
|
|
{
|
|
SAVE_TASK_REGISTERS (new_task);
|
|
current_task_id = ada_get_current_task (inferior_ptid);
|
|
}
|
|
|
|
if (SPECIAL_THREAD_SUPPORT_ACTIVE ())
|
|
{
|
|
/* FIXME: Integrate with switch_to_thread */
|
|
int ret_code;
|
|
flush_cached_frames ();
|
|
registers_changed ();
|
|
if (current_task == current_task_id)
|
|
{
|
|
RESTORE_TASK_REGISTERS (new_task);
|
|
ret_code = 0;
|
|
}
|
|
else
|
|
ret_code = THREAD_FETCH_REGISTERS ();
|
|
if (ret_code == 0)
|
|
stop_pc = read_pc ();
|
|
select_frame (get_current_frame ());
|
|
return ret_code;
|
|
}
|
|
|
|
switch_to_thread (task_ptid_get_ptid (new_task->task_ptid));
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/* Print a message telling the user id of the current task.
|
|
Print an error message if the application does not appear to
|
|
be using any Ada task. */
|
|
|
|
static void
|
|
display_current_task_id (void)
|
|
{
|
|
const int current_task = ada_get_current_task (inferior_ptid);
|
|
|
|
if (current_task == -1)
|
|
printf_filtered ("[Current task is unknown]\n");
|
|
else
|
|
printf_filtered ("[Current task is %d]\n", current_task);
|
|
}
|
|
|
|
/* Parse and evaluate TIDSTR into a task id, and try to switch to
|
|
that task. Print an error message if the task switch failed. */
|
|
|
|
static void
|
|
task_command_1 (char *tidstr, int from_tty)
|
|
{
|
|
const int num = value_as_long (parse_and_eval (tidstr));
|
|
struct task_entry *e = get_entry_vptr (num);
|
|
|
|
if (e == NULL)
|
|
error ("Task ID %d not known. Use the \"info tasks\" command to\n"
|
|
"see the IDs of currently known tasks", num);
|
|
|
|
if (switch_to_task (e) == 0)
|
|
{
|
|
ada_find_printable_frame (get_selected_frame ());
|
|
printf_filtered ("[Switching to task %d]\n", num);
|
|
print_stack_frame (get_selected_frame (),
|
|
frame_relative_level (get_selected_frame ()), 1);
|
|
}
|
|
else
|
|
printf_filtered ("Unable to switch to task %d\n", num);
|
|
}
|
|
|
|
/* Switch to task indicated in TIDSTR. Simply print the current task
|
|
if TIDSTR is empty or NULL. */
|
|
|
|
static void
|
|
task_command (char *tidstr, int from_tty)
|
|
{
|
|
const int task_list_built = ada_build_task_list ();
|
|
|
|
if (!task_list_built)
|
|
return;
|
|
|
|
if (tidstr == NULL || tidstr[0] == '\0')
|
|
display_current_task_id ();
|
|
else
|
|
task_command_1 (tidstr, from_tty);
|
|
}
|
|
|
|
#if defined (__fsu__) || (defined(__alpha__) && defined(__osf__) && !defined(VXWORKS_TARGET))
|
|
/* Restore saved registers if there was a task switch. */
|
|
void
|
|
ada_reset_thread_registers (void)
|
|
{
|
|
if (current_task_id != -1 && SPECIAL_THREAD_SUPPORT_ACTIVE ())
|
|
{
|
|
supply_gregset (&gregset_saved);
|
|
supply_fpregset (&fpregset_saved);
|
|
reinit_frame_cache ();
|
|
stop_pc = read_pc ();
|
|
}
|
|
current_task_id = -1;
|
|
}
|
|
#else
|
|
void
|
|
ada_reset_thread_registers (void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* The 'normal_stop' observer notification callback. */
|
|
|
|
static void
|
|
normal_stop_notification (void)
|
|
{
|
|
/* The inferior has been resumed, and just stopped. This means that
|
|
our task_list needs to be recomputed before it can be used again. */
|
|
stale_task_list_p = 1;
|
|
}
|
|
|
|
/* Attach all the observers needed by the ada-tasks module. */
|
|
|
|
static void
|
|
ada_tasks_attach_observers (void)
|
|
{
|
|
observer_attach_normal_stop (&normal_stop_notification);
|
|
}
|
|
|
|
void
|
|
_initialize_tasks (void)
|
|
{
|
|
#ifdef GNAT_GDB
|
|
extern struct cmd_list_element *cmdlist;
|
|
|
|
ada_tasks_attach_observers ();
|
|
|
|
add_info ("tasks", info_tasks_command,
|
|
"Without argument: list all known Ada tasks, with status information.\n"
|
|
"info tasks n: print detailed information of task n.");
|
|
|
|
add_cmd ("task", class_run, task_command,
|
|
"Without argument: print the current task ID.\n"
|
|
"task n: Use this command to switch to task n.",
|
|
&cmdlist);
|
|
#endif
|
|
}
|