/* BSD user-level threads support.
- Copyright (C) 2005-2018 Free Software Foundation, Inc.
+ Copyright (C) 2005-2021 Free Software Foundation, Inc.
This file is part of GDB.
struct bsd_uthread_target final : public target_ops
{
- bsd_uthread_target ()
- { to_stratum = thread_stratum; }
-
const target_info &info () const override
{ return bsd_uthread_target_info; }
+ strata stratum () const override { return thread_stratum; }
+
void close () override;
void mourn_inferior () override;
void fetch_registers (struct regcache *, int) override;
void store_registers (struct regcache *, int) override;
- ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
+ ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override;
void resume (ptid_t, int, enum gdb_signal) override;
bool thread_alive (ptid_t ptid) override;
const char *extra_thread_info (struct thread_info *) override;
- const char *pid_to_str (ptid_t) override;
+ std::string pid_to_str (ptid_t) override;
};
static bsd_uthread_target bsd_uthread_ops;
bsd_uthread_thread_ctx_offset =
bsd_uthread_lookup_offset ("_thread_ctx_offset", objfile);
- push_target (&bsd_uthread_ops);
+ current_inferior ()->push_target (&bsd_uthread_ops);
bsd_uthread_active = 1;
return 1;
}
if (!bsd_uthread_active)
return;
- unpush_target (&bsd_uthread_ops);
+ current_inferior ()->unpush_target (&bsd_uthread_ops);
}
static void
-bsd_uthread_inferior_created (struct target_ops *ops, int from_tty)
+bsd_uthread_inferior_created (inferior *inf)
{
bsd_uthread_activate (NULL);
}
/* Likely candidates for the threads library. */
-static const char *bsd_uthread_solib_names[] =
+static const char * const bsd_uthread_solib_names[] =
{
"/usr/lib/libc_r.so", /* FreeBSD */
"/usr/lib/libpthread.so", /* OpenBSD */
static void
bsd_uthread_solib_loaded (struct so_list *so)
{
- const char **names = bsd_uthread_solib_names;
+ const char * const *names = bsd_uthread_solib_names;
for (names = bsd_uthread_solib_names; *names; names++)
{
void
bsd_uthread_target::mourn_inferior ()
{
- struct target_ops *beneath = find_target_beneath (this);
- beneath->mourn_inferior ();
+ beneath ()->mourn_inferior ();
bsd_uthread_deactivate ();
}
struct bsd_uthread_ops *uthread_ops
= (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
ptid_t ptid = regcache->ptid ();
- CORE_ADDR addr = ptid_get_tid (ptid);
- struct target_ops *beneath = find_target_beneath (this);
+ CORE_ADDR addr = ptid.tid ();
CORE_ADDR active_addr;
scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
inferior_ptid = ptid;
/* Always fetch the appropriate registers from the layer beneath. */
- beneath->fetch_registers (regcache, regnum);
+ beneath ()->fetch_registers (regcache, regnum);
/* FIXME: That might have gotten us more than we asked for. Make
sure we overwrite all relevant registers with values from the
struct gdbarch *gdbarch = regcache->arch ();
struct bsd_uthread_ops *uthread_ops
= (struct bsd_uthread_ops *) gdbarch_data (gdbarch, bsd_uthread_data);
- struct target_ops *beneath = find_target_beneath (this);
ptid_t ptid = regcache->ptid ();
- CORE_ADDR addr = ptid_get_tid (ptid);
+ CORE_ADDR addr = ptid.tid ();
CORE_ADDR active_addr;
scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid);
else
{
/* Updating the thread that is currently running; pass the
- request to the layer beneath. */
- beneath->store_registers (regcache, regnum);
+ request to the layer beneath. */
+ beneath ()->store_registers (regcache, regnum);
}
}
ptid_t
bsd_uthread_target::wait (ptid_t ptid, struct target_waitstatus *status,
- int options)
+ target_wait_flags options)
{
enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
CORE_ADDR addr;
- struct target_ops *beneath = find_target_beneath (this);
+ process_stratum_target *beneath
+ = as_process_stratum_target (this->beneath ());
/* Pass the request to the layer beneath. */
ptid = beneath->wait (ptid, status, options);
gdb_byte buf[4];
/* FIXME: For executables linked statically with the threads
- library, we end up here before the program has actually been
- executed. In that case ADDR will be garbage since it has
- been read from the wrong virtual memory image. */
+ library, we end up here before the program has actually been
+ executed. In that case ADDR will be garbage since it has
+ been read from the wrong virtual memory image. */
if (target_read_memory (addr, buf, 4) == 0)
{
ULONGEST magic = extract_unsigned_integer (buf, 4, byte_order);
if (magic == BSD_UTHREAD_PTHREAD_MAGIC)
- ptid = ptid_build (ptid_get_pid (ptid), 0, addr);
+ ptid = ptid_t (ptid.pid (), 0, addr);
}
}
/* If INFERIOR_PTID doesn't have a tid member yet, and we now have a
ptid with tid set, then ptid is still the initial thread of
the process. Notify GDB core about it. */
- if (ptid_get_tid (inferior_ptid) == 0
- && ptid_get_tid (ptid) != 0 && !in_thread_list (ptid))
- thread_change_ptid (inferior_ptid, ptid);
+ if (inferior_ptid.tid () == 0
+ && ptid.tid () != 0 && !in_thread_list (beneath, ptid))
+ thread_change_ptid (beneath, inferior_ptid, ptid);
/* Don't let the core see a ptid without a corresponding thread. */
- if (!in_thread_list (ptid) || is_exited (ptid))
- add_thread (ptid);
+ thread_info *thread = find_thread_ptid (beneath, ptid);
+ if (thread == NULL || thread->state == THREAD_EXITED)
+ add_thread (beneath, ptid);
return ptid;
}
bsd_uthread_target::resume (ptid_t ptid, int step, enum gdb_signal sig)
{
/* Pass the request to the layer beneath. */
- struct target_ops *beneath = find_target_beneath (this);
- beneath->resume (ptid, step, sig);
+ beneath ()->resume (ptid, step, sig);
}
bool
bsd_uthread_target::thread_alive (ptid_t ptid)
{
enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
- struct target_ops *beneath = find_target_beneath (this);
- CORE_ADDR addr = ptid_get_tid (ptid);
+ CORE_ADDR addr = ptid.tid ();
if (addr != 0)
{
return false;
}
- return beneath->thread_alive (ptid);
+ return beneath ()->thread_alive (ptid);
}
void
bsd_uthread_target::update_thread_list ()
{
- pid_t pid = ptid_get_pid (inferior_ptid);
+ pid_t pid = inferior_ptid.pid ();
int offset = bsd_uthread_thread_next_offset;
CORE_ADDR addr;
addr = bsd_uthread_read_memory_address (bsd_uthread_thread_list_addr);
while (addr != 0)
{
- ptid_t ptid = ptid_build (pid, 0, addr);
+ ptid_t ptid = ptid_t (pid, 0, addr);
- if (!in_thread_list (ptid) || is_exited (ptid))
+ process_stratum_target *proc_target
+ = as_process_stratum_target (this->beneath ());
+ thread_info *thread = find_thread_ptid (proc_target, ptid);
+ if (thread == nullptr || thread->state == THREAD_EXITED)
{
/* If INFERIOR_PTID doesn't have a tid member yet, then ptid
is still the initial thread of the process. Notify GDB
core about it. */
- if (ptid_get_tid (inferior_ptid) == 0)
- thread_change_ptid (inferior_ptid, ptid);
+ if (inferior_ptid.tid () == 0)
+ thread_change_ptid (proc_target, inferior_ptid, ptid);
else
- add_thread (ptid);
+ add_thread (proc_target, ptid);
}
addr = bsd_uthread_read_memory_address (addr + offset);
}
/* Possible states a thread can be in. */
-static const char *bsd_uthread_state[] =
+static const char * const bsd_uthread_state[] =
{
"RUNNING",
"SIGTHREAD",
bsd_uthread_target::extra_thread_info (thread_info *info)
{
enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ());
- CORE_ADDR addr = ptid_get_tid (info->ptid);
+ CORE_ADDR addr = info->ptid.tid ();
if (addr != 0)
{
return NULL;
}
-const char *
+std::string
bsd_uthread_target::pid_to_str (ptid_t ptid)
{
- if (ptid_get_tid (ptid) != 0)
- {
- static char buf[64];
-
- xsnprintf (buf, sizeof buf, "process %d, thread 0x%lx",
- ptid_get_pid (ptid), ptid_get_tid (ptid));
- return buf;
- }
+ if (ptid.tid () != 0)
+ return string_printf ("process %d, thread 0x%lx",
+ ptid.pid (), ptid.tid ());
return normal_pid_to_str (ptid);
}
+void _initialize_bsd_uthread ();
void
-_initialize_bsd_uthread (void)
+_initialize_bsd_uthread ()
{
bsd_uthread_data = gdbarch_data_register_pre_init (bsd_uthread_init);
- gdb::observers::inferior_created.attach (bsd_uthread_inferior_created);
- gdb::observers::solib_loaded.attach (bsd_uthread_solib_loaded);
- gdb::observers::solib_unloaded.attach (bsd_uthread_solib_unloaded);
+ gdb::observers::inferior_created.attach (bsd_uthread_inferior_created,
+ "bsd-uthread");
+ gdb::observers::solib_loaded.attach (bsd_uthread_solib_loaded,
+ "bsd-uthread");
+ gdb::observers::solib_unloaded.attach (bsd_uthread_solib_unloaded,
+ "bsd-uthread");
}
projects / deliverable / binutils-gdb.git / blobdiff