/* Interface GDB to the GNU Hurd.
- Copyright (C) 1992-2018 Free Software Foundation, Inc.
+ Copyright (C) 1992-2021 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
+/* Include this first, to pick up the <mach.h> 'thread_info' diversion. */
+#include "gnu-nat.h"
+
/* Mach/Hurd headers are not yet ready for C++ compilation. */
extern "C"
{
#include <mach/message.h>
#include <mach/notify.h>
#include <mach/vm_attributes.h>
+#include <mach/vm_param.h>
#include <hurd.h>
#include <hurd/interrupt.h>
#include <setjmp.h>
#include <signal.h>
#include <sys/ptrace.h>
+#include <elf.h>
+#include <link.h>
#include "inferior.h"
#include "symtab.h"
#include "value.h"
#include "language.h"
#include "target.h"
-#include "gdb_wait.h"
+#include "gdbsupport/gdb_wait.h"
+#include "gdbarch.h"
#include "gdbcmd.h"
#include "gdbcore.h"
#include "gdbthread.h"
#include "gdb_obstack.h"
#include "tid-parse.h"
+#include "nat/fork-inferior.h"
-#include "gnu-nat.h"
#include "inf-child.h"
/* MIG stubs are not yet ready for C++ compilation. */
#include "msg_reply_S.h"
#include "exc_request_U.h"
#include "msg_U.h"
+
+#include "gnu-nat-mig.h"
}
+struct gnu_nat_target *gnu_target;
+
static process_t proc_server = MACH_PORT_NULL;
/* If we've sent a proc_wait_request to the proc server, the pid of the
/* The number of wait requests we've sent, and expect replies from. */
int proc_waits_pending = 0;
-int gnu_debug_flag = 0;
+bool gnu_debug_flag = false;
/* Forward decls */
static struct inf *make_inf ();
-void inf_clear_wait (struct inf *inf);
-void inf_cleanup (struct inf *inf);
-void inf_startup (struct inf *inf, int pid);
-int inf_update_suspends (struct inf *inf);
-void inf_set_pid (struct inf *inf, pid_t pid);
-void inf_validate_procs (struct inf *inf);
-void inf_steal_exc_ports (struct inf *inf);
-void inf_restore_exc_ports (struct inf *inf);
-void inf_set_threads_resume_sc (struct inf *inf,
- struct proc *run_thread,
- int run_others);
-int inf_set_threads_resume_sc_for_signal_thread (struct inf *inf);
-void inf_suspend (struct inf *inf);
-void inf_resume (struct inf *inf);
-void inf_set_step_thread (struct inf *inf, struct proc *proc);
-void inf_detach (struct inf *inf);
-void inf_attach (struct inf *inf, int pid);
-void inf_signal (struct inf *inf, enum gdb_signal sig);
-void inf_continue (struct inf *inf);
#define inf_debug(_inf, msg, args...) \
do { struct inf *__inf = (_inf); \
debug ("{inf %d %s}: " msg, __inf->pid, \
host_address_to_string (__inf) , ##args); } while (0)
-void proc_abort (struct proc *proc, int force);
-struct proc *make_proc (struct inf *inf, mach_port_t port, int tid);
-struct proc *_proc_free (struct proc *proc);
-int proc_update_sc (struct proc *proc);
-kern_return_t proc_get_exception_port (struct proc *proc, mach_port_t * port);
-kern_return_t proc_set_exception_port (struct proc *proc, mach_port_t port);
-static mach_port_t _proc_get_exc_port (struct proc *proc);
-void proc_steal_exc_port (struct proc *proc, mach_port_t exc_port);
-void proc_restore_exc_port (struct proc *proc);
-int proc_trace (struct proc *proc, int set);
-
/* Evaluate RPC_EXPR in a scope with the variables MSGPORT and REFPORT bound
to INF's msg port and task port respectively. If it has no msg port,
EIEIO is returned. INF must refer to a running process! */
/* Update PROC's real suspend count to match it's desired one. Returns true
if we think PROC is now in a runnable state. */
int
-proc_update_sc (struct proc *proc)
+gnu_nat_target::proc_update_sc (struct proc *proc)
{
int running;
int err = 0;
In particular, a thread is precious if it's running (in which case forcing
it includes suspending it first), or if it has an exception pending. */
void
-proc_abort (struct proc *proc, int force)
+gnu_nat_target::proc_abort (struct proc *proc, int force)
{
gdb_assert (proc_is_thread (proc));
that the thread is stopped and aborted first, and sets the state_changed
field in PROC to true. */
thread_state_t
-proc_get_state (struct proc *proc, int will_modify)
+gnu_nat_target::proc_get_state (struct proc *proc, int will_modify)
{
int was_aborted = proc->aborted;
\f
/* Set PORT to PROC's exception port. */
kern_return_t
-proc_get_exception_port (struct proc * proc, mach_port_t * port)
+gnu_nat_target::proc_get_exception_port (struct proc * proc, mach_port_t * port)
{
if (proc_is_task (proc))
return task_get_exception_port (proc->port, port);
/* Set PROC's exception port to PORT. */
kern_return_t
-proc_set_exception_port (struct proc * proc, mach_port_t port)
+gnu_nat_target::proc_set_exception_port (struct proc * proc, mach_port_t port)
{
proc_debug (proc, "setting exception port: %lu", port);
if (proc_is_task (proc))
}
/* Get PROC's exception port, cleaning up a bit if proc has died. */
-static mach_port_t
-_proc_get_exc_port (struct proc *proc)
+mach_port_t
+gnu_nat_target::_proc_get_exc_port (struct proc *proc)
{
mach_port_t exc_port;
kern_return_t err = proc_get_exception_port (proc, &exc_port);
been done. Stash away any existing exception port so we can
restore it later. */
void
-proc_steal_exc_port (struct proc *proc, mach_port_t exc_port)
+gnu_nat_target::proc_steal_exc_port (struct proc *proc, mach_port_t exc_port)
{
mach_port_t cur_exc_port = _proc_get_exc_port (proc);
found there at the time, unless *our* exception port has since been
overwritten, in which case who knows what's going on. */
void
-proc_restore_exc_port (struct proc *proc)
+gnu_nat_target::proc_restore_exc_port (struct proc *proc)
{
mach_port_t cur_exc_port = _proc_get_exc_port (proc);
/* Turns hardware tracing in PROC on or off when SET is true or false,
respectively. Returns true on success. */
int
-proc_trace (struct proc *proc, int set)
+gnu_nat_target::proc_trace (struct proc *proc, int set)
{
thread_state_t state = proc_get_state (proc, 1);
if (set)
{
/* XXX We don't get the exception unless the thread has its own
- exception port???? */
+ exception port???? */
if (proc->exc_port == MACH_PORT_NULL)
proc_steal_exc_port (proc, proc->inf->event_port);
THREAD_STATE_SET_TRACED (state);
/* Returns a new proc structure with the given fields. Also adds a
notification for PORT becoming dead to be sent to INF's notify port. */
struct proc *
-make_proc (struct inf *inf, mach_port_t port, int tid)
+gnu_nat_target::make_proc (struct inf *inf, mach_port_t port, int tid)
{
kern_return_t err;
mach_port_t prev_port = MACH_PORT_NULL;
proc_steal_exc_port (proc, inf->event_port);
else
/* Just clear thread exception ports -- they default to the
- task one. */
+ task one. */
proc_steal_exc_port (proc, MACH_PORT_NULL);
}
/* Frees PROC and any resources it uses, and returns the value of PROC's
next field. */
struct proc *
-_proc_free (struct proc *proc)
+gnu_nat_target::_proc_free (struct proc *proc)
{
struct inf *inf = proc->inf;
struct proc *next = proc->next;
/* Clear INF's target wait status. */
void
-inf_clear_wait (struct inf *inf)
+gnu_nat_target::inf_clear_wait (struct inf *inf)
{
inf_debug (inf, "clearing wait");
inf->wait.status.kind = TARGET_WAITKIND_SPURIOUS;
\f
void
-inf_cleanup (struct inf *inf)
+gnu_nat_target::inf_cleanup (struct inf *inf)
{
inf_debug (inf, "cleanup");
}
void
-inf_startup (struct inf *inf, int pid)
+gnu_nat_target::inf_startup (struct inf *inf, int pid)
{
kern_return_t err;
\f
/* Close current process, if any, and attach INF to process PORT. */
void
-inf_set_pid (struct inf *inf, pid_t pid)
+gnu_nat_target::inf_set_pid (struct inf *inf, pid_t pid)
{
task_t task_port;
struct proc *task = inf->task;
proc server state. Note that the traced field is only updated from
the proc server state if we do not have a message port. If we do
have a message port we'd better look at the tracemask itself. */
-static void
-inf_validate_procinfo (struct inf *inf)
+void
+gnu_nat_target::inf_validate_procinfo (struct inf *inf)
{
char *noise;
mach_msg_type_number_t noise_len = 0;
/* Validates INF's task suspend count. If it's higher than we expect,
verify with the user before `stealing' the extra count. */
-static void
-inf_validate_task_sc (struct inf *inf)
+void
+gnu_nat_target::inf_validate_task_sc (struct inf *inf)
{
char *noise;
mach_msg_type_number_t noise_len = 0;
if (inf->task->cur_sc < pi->taskinfo.suspend_count && suspend_count == -1)
{
/* The proc server might have suspended the task while stopping
- it. This happens when the task is handling a traced signal.
- Refetch the suspend count. The proc server should be
- finished stopping the task by now. */
+ it. This happens when the task is handling a traced signal.
+ Refetch the suspend count. The proc server should be
+ finished stopping the task by now. */
suspend_count = pi->taskinfo.suspend_count;
goto retry;
}
is. If INF is running, the resume_sc count of INF's threads will
be modified, and the signal thread will briefly be run to change
the trace state. */
-static void
-inf_set_traced (struct inf *inf, int on)
+void
+gnu_nat_target::inf_set_traced (struct inf *inf, int on)
{
if (on == inf->traced)
return;
counts in the safe order. Returns true if at least one thread is
thought to be running. */
int
-inf_update_suspends (struct inf *inf)
+gnu_nat_target::inf_update_suspends (struct inf *inf)
{
struct proc *task = inf->task;
inf->running = thread_running && task_running;
/* Once any thread has executed some code, we can't depend on the
- threads list any more. */
+ threads list any more. */
if (inf->running)
inf->threads_up_to_date = 0;
\f
/* Make INF's list of threads be consistent with reality of TASK. */
void
-inf_validate_procs (struct inf *inf)
+gnu_nat_target::inf_validate_procs (struct inf *inf)
{
thread_array_t threads;
mach_msg_type_number_t num_threads, i;
last = thread;
proc_debug (thread, "new thread: %lu", threads[i]);
- ptid = ptid_build (inf->pid, thread->tid, 0);
+ ptid = ptid_t (inf->pid, thread->tid, 0);
/* Tell GDB's generic thread code. */
- if (ptid_equal (inferior_ptid, pid_to_ptid (inf->pid)))
+ if (inferior_ptid == ptid_t (inf->pid))
/* This is the first time we're hearing about thread
ids, after a fork-child. */
- thread_change_ptid (inferior_ptid, ptid);
+ thread_change_ptid (this, inferior_ptid, ptid);
else if (inf->pending_execs != 0)
/* This is a shell thread. */
- add_thread_silent (ptid);
+ add_thread_silent (this, ptid);
else
- add_thread (ptid);
+ add_thread (this, ptid);
}
}
if (!inf->task)
return 0;
if (!inf->threads_up_to_date)
- inf_validate_procs (inf);
+ gnu_target->inf_validate_procs (inf);
return !!inf->task;
}
and others are set to their run_sc if RUN_OTHERS is true, and otherwise
their pause_sc. */
void
-inf_set_threads_resume_sc (struct inf *inf,
- struct proc *run_thread, int run_others)
+gnu_nat_target::inf_set_threads_resume_sc (struct inf *inf,
+ struct proc *run_thread, int run_others)
{
struct proc *thread;
/* Cause INF to continue execution immediately; individual threads may still
be suspended (but their suspend counts will be updated). */
void
-inf_resume (struct inf *inf)
+gnu_nat_target::inf_resume (struct inf *inf)
{
struct proc *thread;
/* Cause INF to stop execution immediately; individual threads may still
be running. */
void
-inf_suspend (struct inf *inf)
+gnu_nat_target::inf_suspend (struct inf *inf)
{
struct proc *thread;
function changes it to be PROC, changing any old step_thread to be
a normal one. A PROC of 0 clears any existing value. */
void
-inf_set_step_thread (struct inf *inf, struct proc *thread)
+gnu_nat_target::inf_set_step_thread (struct inf *inf, struct proc *thread)
{
gdb_assert (!thread || proc_is_thread (thread));
(plus whatever other thread are set to always run). Returns true if we
did so, or false if we can't find a signal thread. */
int
-inf_set_threads_resume_sc_for_signal_thread (struct inf *inf)
+gnu_nat_target::inf_set_threads_resume_sc_for_signal_thread (struct inf *inf)
{
if (inf->signal_thread)
{
\f
/* Detachs from INF's inferior task, letting it run once again... */
void
-inf_detach (struct inf *inf)
+gnu_nat_target::inf_detach (struct inf *inf)
{
struct proc *task = inf->task;
/* Attaches INF to the process with process id PID, returning it in a
suspended state suitable for debugging. */
void
-inf_attach (struct inf *inf, int pid)
+gnu_nat_target::inf_attach (struct inf *inf, int pid)
{
inf_debug (inf, "attaching: %d", pid);
\f
/* Makes sure that we've got our exception ports entrenched in the process. */
void
-inf_steal_exc_ports (struct inf *inf)
+gnu_nat_target::inf_steal_exc_ports (struct inf *inf)
{
struct proc *thread;
/* Makes sure the process has its own exception ports. */
void
-inf_restore_exc_ports (struct inf *inf)
+gnu_nat_target::inf_restore_exc_ports (struct inf *inf)
{
struct proc *thread;
signal 0, will continue it. INF is assumed to be in a paused state, and
the resume_sc's of INF's threads may be affected. */
void
-inf_signal (struct inf *inf, enum gdb_signal sig)
+gnu_nat_target::inf_signal (struct inf *inf, enum gdb_signal sig)
{
kern_return_t err = 0;
int host_sig = gdb_signal_to_host (sig);
/* Continue INF without delivering a signal. This is meant to be used
when INF does not have a message port. */
void
-inf_continue (struct inf *inf)
+gnu_nat_target::inf_continue (struct inf *inf)
{
process_t proc;
kern_return_t err = proc_pid2proc (proc_server, inf->pid, &proc);
/* The inferior being waited for by gnu_wait. Since GDB is decidely not
multi-threaded, we don't bother to lock this. */
-struct inf *waiting_inf;
-
-/* MIG stubs are not yet ready for C++ compilation. */
-extern "C" int exc_server (mach_msg_header_t *, mach_msg_header_t *);
-extern "C" int msg_reply_server (mach_msg_header_t *, mach_msg_header_t *);
-extern "C" int notify_server (mach_msg_header_t *, mach_msg_header_t *);
-extern "C" int process_reply_server (mach_msg_header_t *, mach_msg_header_t *);
+static struct inf *waiting_inf;
/* Wait for something to happen in the inferior, returning what in STATUS. */
-static ptid_t
-gnu_wait (struct target_ops *ops,
- ptid_t ptid, struct target_waitstatus *status, int options)
+
+ptid_t
+gnu_nat_target::wait (ptid_t ptid, struct target_waitstatus *status,
+ target_wait_flags options)
{
struct msg
{
waiting_inf = inf;
- inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid));
+ inf_debug (inf, "waiting for: %s", target_pid_to_str (ptid).c_str ());
rewait:
if (proc_wait_pid != inf->pid && !inf->no_wait)
thread = inf->wait.thread;
if (thread)
- ptid = ptid_build (inf->pid, thread->tid, 0);
- else if (ptid_equal (ptid, minus_one_ptid))
+ ptid = ptid_t (inf->pid, thread->tid, 0);
+ else if (ptid == minus_one_ptid)
thread = inf_tid_to_thread (inf, -1);
else
- thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid));
+ thread = inf_tid_to_thread (inf, ptid.lwp ());
if (!thread || thread->port == MACH_PORT_NULL)
{
/* TID is dead; try and find a new thread. */
if (inf_update_procs (inf) && inf->threads)
- ptid = ptid_build (inf->pid, inf->threads->tid, 0); /* The first
+ ptid = ptid_t (inf->pid, inf->threads->tid, 0); /* The first
available
thread. */
else
}
if (thread
- && !ptid_equal (ptid, minus_one_ptid)
+ && ptid != minus_one_ptid
&& status->kind != TARGET_WAITKIND_SPURIOUS
&& inf->pause_sc == 0 && thread->pause_sc == 0)
/* If something actually happened to THREAD, make sure we
inf_update_suspends (inf);
}
- inf_debug (inf, "returning ptid = %s, status = %s (%d)",
- target_pid_to_str (ptid),
- status->kind == TARGET_WAITKIND_EXITED ? "EXITED"
- : status->kind == TARGET_WAITKIND_STOPPED ? "STOPPED"
- : status->kind == TARGET_WAITKIND_SIGNALLED ? "SIGNALLED"
- : status->kind == TARGET_WAITKIND_LOADED ? "LOADED"
- : status->kind == TARGET_WAITKIND_SPURIOUS ? "SPURIOUS"
- : "?",
- status->value.integer);
+ inf_debug (inf, "returning ptid = %s, %s",
+ target_pid_to_str (ptid).c_str (),
+ target_waitstatus_to_string (status).c_str ());
return ptid;
}
}
}
else
- /* A supppressed exception, which ignore. */
+ /* A suppressed exception, which ignore. */
{
inf->wait.suppress = 1;
mach_port_deallocate (mach_task_self (), reply_port);
inf->no_wait = 1;
/* Since we can't see the inferior's signals, don't trap them. */
- inf_set_traced (inf, 0);
+ gnu_target->inf_set_traced (inf, 0);
}
}
else if (pid == inf->pid)
mach_port_t oldmsgport)
ILL_RPC (S_proc_getmsgport_reply,
mach_port_t reply_port, kern_return_t return_code,
- mach_port_t msgports)
+ mach_port_t msgports, mach_msg_type_name_t msgportsPoly)
ILL_RPC (S_proc_pid2task_reply,
mach_port_t reply_port, kern_return_t return_code, mach_port_t task)
ILL_RPC (S_proc_task2pid_reply,
mach_port_t reply_port, kern_return_t return_code, pid_t pid)
ILL_RPC (S_proc_task2proc_reply,
- mach_port_t reply_port, kern_return_t return_code, mach_port_t proc)
+ mach_port_t reply_port, kern_return_t return_code,
+ mach_port_t proc, mach_msg_type_name_t procPoly)
ILL_RPC (S_proc_proc2task_reply,
mach_port_t reply_port, kern_return_t return_code, mach_port_t task)
ILL_RPC (S_proc_pid2proc_reply,
- mach_port_t reply_port, kern_return_t return_code, mach_port_t proc)
+ mach_port_t reply_port, kern_return_t return_code,
+ mach_port_t proc, mach_msg_type_name_t procPoly)
ILL_RPC (S_proc_getprocinfo_reply,
mach_port_t reply_port, kern_return_t return_code,
int flags, procinfo_t procinfo, mach_msg_type_number_t procinfoCnt,
still unprocessed from the last resume we did (any given resume may result
in multiple events returned by wait). */
-static void
-gnu_resume (struct target_ops *ops,
- ptid_t ptid, int step, enum gdb_signal sig)
+void
+gnu_nat_target::resume (ptid_t ptid, int step, enum gdb_signal sig)
{
struct proc *step_thread = 0;
int resume_all;
struct inf *inf = gnu_current_inf;
inf_debug (inf, "ptid = %s, step = %d, sig = %d",
- target_pid_to_str (ptid), step, sig);
+ target_pid_to_str (ptid).c_str (), step, sig);
inf_validate_procinfo (inf);
inf_update_procs (inf);
/* A specific PTID means `step only this process id'. */
- resume_all = ptid_equal (ptid, minus_one_ptid);
+ resume_all = ptid == minus_one_ptid;
if (resume_all)
/* Allow all threads to run, except perhaps single-stepping one. */
{
inf_debug (inf, "running all threads; tid = %d",
- ptid_get_pid (inferior_ptid));
+ inferior_ptid.pid ());
ptid = inferior_ptid; /* What to step. */
inf_set_threads_resume_sc (inf, 0, 1);
}
else
/* Just allow a single thread to run. */
{
- struct proc *thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid));
+ struct proc *thread = inf_tid_to_thread (inf, ptid.lwp ());
if (!thread)
error (_("Can't run single thread id %s: no such thread!"),
- target_pid_to_str (ptid));
- inf_debug (inf, "running one thread: %s", target_pid_to_str (ptid));
+ target_pid_to_str (ptid).c_str ());
+ inf_debug (inf, "running one thread: %s",
+ target_pid_to_str (ptid).c_str ());
inf_set_threads_resume_sc (inf, thread, 0);
}
if (step)
{
- step_thread = inf_tid_to_thread (inf, ptid_get_lwp (ptid));
+ step_thread = inf_tid_to_thread (inf, ptid.lwp ());
if (!step_thread)
warning (_("Can't step thread id %s: no such thread."),
- target_pid_to_str (ptid));
+ target_pid_to_str (ptid).c_str ());
else
- inf_debug (inf, "stepping thread: %s", target_pid_to_str (ptid));
+ inf_debug (inf, "stepping thread: %s",
+ target_pid_to_str (ptid).c_str ());
}
if (step_thread != inf->step_thread)
inf_set_step_thread (inf, step_thread);
}
\f
-static void
-gnu_kill_inferior (struct target_ops *ops)
+void
+gnu_nat_target::kill ()
{
struct proc *task = gnu_current_inf->task;
}
/* Clean up after the inferior dies. */
-static void
-gnu_mourn_inferior (struct target_ops *ops)
+void
+gnu_nat_target::mourn_inferior ()
{
inf_debug (gnu_current_inf, "rip");
inf_detach (gnu_current_inf);
- inf_child_mourn_inferior (ops);
+ inf_child_target::mourn_inferior ();
}
\f
trace_start_error_with_name ("ptrace");
}
-static void
-gnu_create_inferior (struct target_ops *ops,
- const char *exec_file, const std::string &allargs,
- char **env,
- int from_tty)
+void
+gnu_nat_target::create_inferior (const char *exec_file,
+ const std::string &allargs,
+ char **env,
+ int from_tty)
{
struct inf *inf = cur_inf ();
+ inferior *inferior = current_inferior ();
int pid;
inf_debug (inf, "creating inferior");
+ if (!inf->target_is_pushed (this))
+ inf->push_target (this);
+
pid = fork_inferior (exec_file, allargs, env, gnu_ptrace_me,
- NULL, NULL, NULL, NULL);
+ NULL, NULL, NULL, NULL);
/* We have something that executes now. We'll be running through
the shell at this point (if startup-with-shell is true), but the
pid shouldn't change. */
- add_thread_silent (pid_to_ptid (pid));
+ thread_info *thr = add_thread_silent (this, ptid_t (pid));
+ switch_to_thread (thr);
/* Attach to the now stopped child, which is actually a shell... */
inf_debug (inf, "attaching to child: %d", pid);
inf_attach (inf, pid);
- push_target (ops);
-
inf->pending_execs = 1;
inf->nomsg = 1;
inf->traced = 1;
inf_resume (inf);
/* We now have thread info. */
- thread_change_ptid (inferior_ptid,
- ptid_build (inf->pid, inf_pick_first_thread (), 0));
+ thread_change_ptid (this, inferior_ptid,
+ ptid_t (inf->pid, inf_pick_first_thread (), 0));
gdb_startup_inferior (pid, START_INFERIOR_TRAPS_EXPECTED);
\f
/* Attach to process PID, then initialize for debugging it
and wait for the trace-trap that results from attaching. */
-static void
-gnu_attach (struct target_ops *ops, const char *args, int from_tty)
+void
+gnu_nat_target::attach (const char *args, int from_tty)
{
int pid;
- char *exec_file;
struct inf *inf = cur_inf ();
struct inferior *inferior;
if (from_tty)
{
- exec_file = (char *) get_exec_file (0);
+ const char *exec_file = get_exec_file (0);
if (exec_file)
printf_unfiltered ("Attaching to program `%s', pid %d\n",
exec_file, pid);
else
printf_unfiltered ("Attaching to pid %d\n", pid);
-
- gdb_flush (gdb_stdout);
}
inf_debug (inf, "attaching to pid: %d", pid);
inf_attach (inf, pid);
- push_target (ops);
-
inferior = current_inferior ();
+ inferior->push_target (this);
+
inferior_appeared (inferior, pid);
inferior->attach_flag = 1;
inf_update_procs (inf);
- inferior_ptid = ptid_build (pid, inf_pick_first_thread (), 0);
+ thread_info *thr
+ = find_thread_ptid (this, ptid_t (pid, inf_pick_first_thread ()));
+ switch_to_thread (thr);
/* We have to initialize the terminal settings now, since the code
below might try to restore them. */
to work, it may be necessary for the process to have been
previously attached. It *might* work if the program was
started via fork. */
-static void
-gnu_detach (struct target_ops *ops, const char *args, int from_tty)
+void
+gnu_nat_target::detach (inferior *inf, int from_tty)
{
- int pid;
-
if (from_tty)
{
- char *exec_file = get_exec_file (0);
+ const char *exec_file = get_exec_file (0);
if (exec_file)
printf_unfiltered ("Detaching from program `%s' pid %d\n",
exec_file, gnu_current_inf->pid);
else
printf_unfiltered ("Detaching from pid %d\n", gnu_current_inf->pid);
- gdb_flush (gdb_stdout);
}
- pid = gnu_current_inf->pid;
-
inf_detach (gnu_current_inf);
- inferior_ptid = null_ptid;
- detach_inferior (pid);
+ switch_to_no_thread ();
+ detach_inferior (inf);
- inf_child_maybe_unpush_target (ops);
+ maybe_unpush_target ();
}
\f
-static void
-gnu_stop (struct target_ops *self, ptid_t ptid)
+void
+gnu_nat_target::stop (ptid_t ptid)
{
- error (_("to_stop target function not implemented"));
+ error (_("stop target function not implemented"));
}
-static int
-gnu_thread_alive (struct target_ops *ops, ptid_t ptid)
+bool
+gnu_nat_target::thread_alive (ptid_t ptid)
{
inf_update_procs (gnu_current_inf);
return !!inf_tid_to_thread (gnu_current_inf,
- ptid_get_lwp (ptid));
+ ptid.lwp ());
}
\f
mach_msg_type_number_t copy_count;
int deallocate = 0;
- char *errstr = "Bug in gnu_write_inferior";
+ const char *errstr = "Bug in gnu_write_inferior";
struct vm_region_list *region_element;
struct vm_region_list *region_head = NULL;
}
}
+/* GNU does not have auxv, but we can at least fake the AT_ENTRY entry for PIE
+ binaries. */
+static enum target_xfer_status
+gnu_xfer_auxv (gdb_byte *readbuf, const gdb_byte *writebuf,
+ CORE_ADDR memaddr, ULONGEST len, ULONGEST *xfered_len)
+{
+ task_t task = (gnu_current_inf
+ ? (gnu_current_inf->task
+ ? gnu_current_inf->task->port : 0)
+ : 0);
+ process_t proc;
+ kern_return_t err;
+ vm_address_t entry;
+ ElfW(auxv_t) auxv[2];
+
+ if (task == MACH_PORT_NULL)
+ return TARGET_XFER_E_IO;
+ if (writebuf != NULL)
+ return TARGET_XFER_E_IO;
+
+ if (memaddr == sizeof (auxv))
+ return TARGET_XFER_EOF;
+ if (memaddr > sizeof (auxv))
+ return TARGET_XFER_E_IO;
+
+ err = proc_task2proc (proc_server, task, &proc);
+ if (err != 0)
+ return TARGET_XFER_E_IO;
+
+ /* Get entry from proc server. */
+ err = proc_get_entry (proc, &entry);
+ if (err != 0)
+ return TARGET_XFER_E_IO;
+
+ /* Fake auxv entry. */
+ auxv[0].a_type = AT_ENTRY;
+ auxv[0].a_un.a_val = entry;
+ auxv[1].a_type = AT_NULL;
+ auxv[1].a_un.a_val = 0;
+
+ inf_debug (gnu_current_inf, "reading auxv %s[%s] --> %s",
+ paddress (target_gdbarch (), memaddr), pulongest (len),
+ host_address_to_string (readbuf));
+
+ if (memaddr + len > sizeof (auxv))
+ len = sizeof (auxv) - memaddr;
+
+ memcpy (readbuf, (gdb_byte *) &auxv + memaddr, len);
+ *xfered_len = len;
+
+ return TARGET_XFER_OK;
+}
+
/* Target to_xfer_partial implementation. */
-static enum target_xfer_status
-gnu_xfer_partial (struct target_ops *ops, enum target_object object,
- const char *annex, gdb_byte *readbuf,
- const gdb_byte *writebuf, ULONGEST offset, ULONGEST len,
- ULONGEST *xfered_len)
+enum target_xfer_status
+gnu_nat_target::xfer_partial (enum target_object object,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset,
+ ULONGEST len, ULONGEST *xfered_len)
{
switch (object)
{
case TARGET_OBJECT_MEMORY:
return gnu_xfer_memory (readbuf, writebuf, offset, len, xfered_len);
+ case TARGET_OBJECT_AUXV:
+ return gnu_xfer_auxv (readbuf, writebuf, offset, len, xfered_len);
default:
return TARGET_XFER_E_IO;
}
}
/* Call FUNC on each memory region in the task. */
-static int
-gnu_find_memory_regions (struct target_ops *self,
- find_memory_region_ftype func, void *data)
+
+int
+gnu_nat_target::find_memory_regions (find_memory_region_ftype func,
+ void *data)
{
kern_return_t err;
task_t task;
mach_port_t object_name;
vm_offset_t offset;
vm_size_t region_length = VM_MAX_ADDRESS - region_address;
- vm_address_t old_address = region_address;
err = vm_region (task,
®ion_address,
return tid_str;
}
-static const char *
-gnu_pid_to_str (struct target_ops *ops, ptid_t ptid)
+std::string
+gnu_nat_target::pid_to_str (ptid_t ptid)
{
struct inf *inf = gnu_current_inf;
- int tid = ptid_get_lwp (ptid);
+ int tid = ptid.lwp ();
struct proc *thread = inf_tid_to_thread (inf, tid);
if (thread)
return proc_string (thread);
else
- {
- static char tid_str[80];
-
- xsnprintf (tid_str, sizeof (tid_str), "bogus thread id %d", tid);
- return tid_str;
- }
-}
-
-\f
-/* Create a prototype generic GNU/Hurd target. The client can
- override it with local methods. */
-
-struct target_ops *
-gnu_target (void)
-{
- struct target_ops *t = inf_child_target ();
-
- t->to_attach = gnu_attach;
- t->to_attach_no_wait = 1;
- t->to_detach = gnu_detach;
- t->to_resume = gnu_resume;
- t->to_wait = gnu_wait;
- t->to_xfer_partial = gnu_xfer_partial;
- t->to_find_memory_regions = gnu_find_memory_regions;
- t->to_kill = gnu_kill_inferior;
- t->to_create_inferior = gnu_create_inferior;
- t->to_mourn_inferior = gnu_mourn_inferior;
- t->to_thread_alive = gnu_thread_alive;
- t->to_pid_to_str = gnu_pid_to_str;
- t->to_stop = gnu_stop;
-
- return t;
+ return string_printf ("bogus thread id %d", tid);
}
\f
}
static int
-parse_int_arg (const char *args, char *cmd_prefix)
+parse_int_arg (const char *args, const char *cmd_prefix)
{
if (args)
{
}
static int
-_parse_bool_arg (const char *args, char *t_val, char *f_val, char *cmd_prefix)
+_parse_bool_arg (const char *args, const char *t_val, const char *f_val,
+ const char *cmd_prefix)
{
if (!args || strcmp (args, t_val) == 0)
return 1;
_parse_bool_arg (args, "on", "off", cmd_prefix)
static void
-check_empty (const char *args, char *cmd_prefix)
+check_empty (const char *args, const char *cmd_prefix)
{
if (args)
error (_("Garbage after \"%s\" command: `%s'"), cmd_prefix, args);
{
struct inf *inf = cur_inf ();
struct proc *thread = inf_tid_to_thread (inf,
- ptid_get_lwp (inferior_ptid));
+ inferior_ptid.lwp ());
if (!thread)
error (_("No current thread."));
return thread;
if (old_sc == 0 && inf->pause_sc != 0)
/* If the task is currently unsuspended, immediately suspend it,
otherwise wait until the next time it gets control. */
- inf_suspend (inf);
+ gnu_target->inf_suspend (inf);
}
static void
\f
/* Steal a send right called NAME in the inferior task, and make it PROC's
saved exception port. */
-static void
-steal_exc_port (struct proc *proc, mach_port_t name)
+void
+gnu_nat_target::steal_exc_port (struct proc *proc, mach_port_t name)
{
kern_return_t err;
mach_port_t port;
if (!args)
error (_("No argument to \"set task exception-port\" command."));
- steal_exc_port (inf->task, parse_and_eval_address (args));
+ gnu_target->steal_exc_port (inf->task, parse_and_eval_address (args));
}
static void
else
{
struct thread_info *tp = parse_thread_id (args, NULL);
- inf->signal_thread = inf_tid_to_thread (inf, ptid_get_lwp (tp->ptid));
+ inf->signal_thread = inf_tid_to_thread (inf, tp->ptid.lwp ());
}
}
if (inf->task && inf->want_signals != inf->traced)
/* Make this take effect immediately in a running process. */
- inf_set_traced (inf, inf->want_signals);
+ gnu_target->inf_set_traced (inf, inf->want_signals);
}
static void
_("Show the default detach-suspend-count value for new threads."),
&show_thread_default_cmd_list);
- add_cmd ("signals", class_run, set_signals_cmd, _("\
+ cmd_list_element *set_signals_cmd
+ = add_cmd ("signals", class_run, set_signals_cmd, _("\
Set whether the inferior process's signals will be intercepted.\n\
Mach exceptions (such as breakpoint traps) are not affected."),
- &setlist);
- add_alias_cmd ("sigs", "signals", class_run, 1, &setlist);
- add_cmd ("signals", no_class, show_signals_cmd, _("\
+ &setlist);
+ add_alias_cmd ("sigs", set_signals_cmd, class_run, 1, &setlist);
+
+ cmd_list_element *show_signals_cmd
+ = add_cmd ("signals", no_class, show_signals_cmd, _("\
Show whether the inferior process's signals will be intercepted."),
- &showlist);
- add_alias_cmd ("sigs", "signals", no_class, 1, &showlist);
+ &showlist);
+ add_alias_cmd ("sigs", show_signals_cmd, no_class, 1, &showlist);
- add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\
+ cmd_list_element *set_signal_thread_cmd
+ = add_cmd ("signal-thread", class_run, set_sig_thread_cmd, _("\
Set the thread that gdb thinks is the libc signal thread.\n\
This thread is run when delivering a signal to a non-stopped process."),
- &setlist);
- add_alias_cmd ("sigthread", "signal-thread", class_run, 1, &setlist);
- add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\
+ &setlist);
+ add_alias_cmd ("sigthread", set_signal_thread_cmd, class_run, 1, &setlist);
+
+ cmd_list_element *show_signal_thread_cmd
+ = add_cmd ("signal-thread", no_class, show_sig_thread_cmd, _("\
Set the thread that gdb thinks is the libc signal thread."),
- &showlist);
- add_alias_cmd ("sigthread", "signal-thread", no_class, 1, &showlist);
+ &showlist);
+ add_alias_cmd ("sigthread", show_signal_thread_cmd, no_class, 1, &showlist);
add_cmd ("stopped", class_run, set_stopped_cmd, _("\
Set whether gdb thinks the inferior process is stopped as with SIGSTOP.\n\
Show whether gdb thinks the inferior process is stopped as with SIGSTOP."),
&showlist);
- add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\
+ cmd_list_element *set_exceptions_cmd
+ = add_cmd ("exceptions", class_run, set_exceptions_cmd, _("\
Set whether exceptions in the inferior process will be trapped.\n\
When exceptions are turned off, neither breakpoints nor single-stepping\n\
-will work."),
- &setlist);
+will work."), &setlist);
/* Allow `set exc' despite conflict with `set exception-port'. */
- add_alias_cmd ("exc", "exceptions", class_run, 1, &setlist);
+ add_alias_cmd ("exc", set_exceptions_cmd, class_run, 1, &setlist);
+
add_cmd ("exceptions", no_class, show_exceptions_cmd, _("\
Show whether exceptions in the inferior process will be trapped."),
&showlist);
add_prefix_cmd ("task", no_class, set_task_cmd,
_("Command prefix for setting task attributes."),
- &set_task_cmd_list, "set task ", 0, &setlist);
+ &set_task_cmd_list, 0, &setlist);
add_prefix_cmd ("task", no_class, show_task_cmd,
_("Command prefix for showing task attributes."),
- &show_task_cmd_list, "show task ", 0, &showlist);
+ &show_task_cmd_list, 0, &showlist);
add_cmd ("pause", class_run, set_task_pause_cmd, _("\
Set whether the task is suspended while gdb has control.\n\
"on the thread when detaching."),
&show_task_cmd_list);
- add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\
+ cmd_list_element *set_task_exception_port_cmd
+ = add_cmd ("exception-port", no_class, set_task_exc_port_cmd, _("\
Set the task exception port to which we forward exceptions.\n\
The argument should be the value of the send right in the task."),
- &set_task_cmd_list);
- add_alias_cmd ("excp", "exception-port", no_class, 1, &set_task_cmd_list);
- add_alias_cmd ("exc-port", "exception-port", no_class, 1,
+ &set_task_cmd_list);
+ add_alias_cmd ("excp", set_task_exception_port_cmd, no_class, 1,
+ &set_task_cmd_list);
+ add_alias_cmd ("exc-port", set_task_exception_port_cmd, no_class, 1,
&set_task_cmd_list);
/* A convenient way of turning on all options require to noninvasively
/* Commands to show information about the task's ports. */
add_info ("send-rights", info_send_rights_cmd,
- _("Show information about the task's send rights"));
+ _("Show information about the task's send rights."));
add_info ("receive-rights", info_recv_rights_cmd,
- _("Show information about the task's receive rights"));
+ _("Show information about the task's receive rights."));
add_info ("port-rights", info_port_rights_cmd,
- _("Show information about the task's port rights"));
+ _("Show information about the task's port rights."));
add_info ("port-sets", info_port_sets_cmd,
- _("Show information about the task's port sets"));
+ _("Show information about the task's port sets."));
add_info ("dead-names", info_dead_names_cmd,
- _("Show information about the task's dead names"));
+ _("Show information about the task's dead names."));
add_info_alias ("ports", "port-rights", 1);
add_info_alias ("port", "port-rights", 1);
add_info_alias ("psets", "port-sets", 1);
if (old_sc == 0 && thread->pause_sc != 0 && thread->inf->pause_sc == 0)
/* If the task is currently unsuspended, immediately suspend it,
otherwise wait until the next time it gets control. */
- inf_suspend (thread->inf);
+ gnu_target->inf_suspend (thread->inf);
}
static void
if (!args)
error (_("No argument to \"set thread exception-port\" command."));
- steal_exc_port (thread, parse_and_eval_address (args));
+ gnu_target->steal_exc_port (thread, parse_and_eval_address (args));
}
#if 0
thread_basic_info_data_t _info;
thread_basic_info_t info = &_info;
mach_msg_type_number_t info_len = THREAD_BASIC_INFO_COUNT;
- kern_return_t err =
- thread_info (thread->port, THREAD_BASIC_INFO, (int *) &info, &info_len);
+ kern_return_t err
+ = mach_thread_info (thread->port, THREAD_BASIC_INFO,
+ (int *) &info, &info_len);
if (err)
error (("%s."), safe_strerror (err));
thread->sc = info->suspend_count;
{
add_prefix_cmd ("thread", no_class, set_thread_cmd,
_("Command prefix for setting thread properties."),
- &set_thread_cmd_list, "set thread ", 0, &setlist);
+ &set_thread_cmd_list, 0, &setlist);
add_prefix_cmd ("default", no_class, show_thread_cmd,
_("Command prefix for setting default thread properties."),
- &set_thread_default_cmd_list, "set thread default ", 0,
+ &set_thread_default_cmd_list, 0,
&set_thread_cmd_list);
add_prefix_cmd ("thread", no_class, set_thread_default_cmd,
_("Command prefix for showing thread properties."),
- &show_thread_cmd_list, "show thread ", 0, &showlist);
+ &show_thread_cmd_list, 0, &showlist);
add_prefix_cmd ("default", no_class, show_thread_default_cmd,
_("Command prefix for showing default thread properties."),
- &show_thread_default_cmd_list, "show thread default ", 0,
+ &show_thread_default_cmd_list, 0,
&show_thread_cmd_list);
add_cmd ("pause", class_run, set_thread_pause_cmd, _("\
This overrides the task exception port.\n\
The argument should be the value of the send right in the task."),
&set_thread_cmd_list);
- add_alias_cmd ("excp", "exception-port", no_class, 1, &set_thread_cmd_list);
- add_alias_cmd ("exc-port", "exception-port", no_class, 1,
+ add_alias_cmd ("excp", set_thread_exception_port_cmd, no_class, 1,
+ &set_thread_cmd_list);
+ add_alias_cmd ("exc-port", set_thread_exception_port_cmd, no_class, 1,
&set_thread_cmd_list);
add_cmd ("takeover-suspend-count", no_class, thread_takeover_sc_cmd, _("\
&thread_cmd_list);
}
+void _initialize_gnu_nat ();
void
-_initialize_gnu_nat (void)
+_initialize_gnu_nat ()
{
proc_server = getproc ();