Copyright 1990-1996, 1998, 1999 Free Software Foundation, Inc.
Contributed by Cygnus Support.
-## Contains temporary hacks..
+ ## Contains temporary hacks..
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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 "frame.h" /* required by inferior.h */
+#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "target.h"
#include "gdbcore.h"
#include <sys/types.h>
#include <fcntl.h>
-#ifdef HAVE_WAIT_H
-# include <wait.h>
-#else
-# ifdef HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-# endif
-#endif
-
-/* "wait.h" fills in the gaps left by <wait.h> */
-#include "wait.h"
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
+#include "gdb_wait.h"
-extern struct symtab_and_line *
-child_enable_exception_callback PARAMS ((enum exception_event_kind, int));
+extern struct symtab_and_line *child_enable_exception_callback (enum
+ exception_event_kind,
+ int);
-extern struct exception_event_record *
-child_get_current_exception_event PARAMS ((void));
+extern struct exception_event_record
+ *child_get_current_exception_event (void);
-extern void _initialize_inftarg PARAMS ((void));
+extern void _initialize_inftarg (void);
-static void
-child_prepare_to_store PARAMS ((void));
+static void child_prepare_to_store (void);
#ifndef CHILD_WAIT
-static int child_wait PARAMS ((int, struct target_waitstatus *));
+static int child_wait (int, struct target_waitstatus *);
#endif /* CHILD_WAIT */
#if !defined(CHILD_POST_WAIT)
-void
-child_post_wait PARAMS ((int, int));
+void child_post_wait (int, int);
#endif
-static void child_open PARAMS ((char *, int));
+static void child_open (char *, int);
-static void
-child_files_info PARAMS ((struct target_ops *));
+static void child_files_info (struct target_ops *);
-static void
-child_detach PARAMS ((char *, int));
+static void child_detach (char *, int);
-static void
-child_detach_from_process PARAMS ((int, char *, int, int));
+static void child_detach_from_process (int, char *, int, int);
-static void
-child_attach PARAMS ((char *, int));
+static void child_attach (char *, int);
-static void
-child_attach_to_process PARAMS ((char *, int, int));
+static void child_attach_to_process (char *, int, int);
#if !defined(CHILD_POST_ATTACH)
-extern void child_post_attach PARAMS ((int));
+extern void child_post_attach (int);
#endif
-static void
-child_require_attach PARAMS ((char *, int));
+static void child_require_attach (char *, int);
-static void
-child_require_detach PARAMS ((int, char *, int));
+static void child_require_detach (int, char *, int);
-static void
-ptrace_me PARAMS ((void));
+static void ptrace_me (void);
-static void
-ptrace_him PARAMS ((int));
+static void ptrace_him (int);
-static void
-child_create_inferior PARAMS ((char *, char *, char **));
+static void child_create_inferior (char *, char *, char **);
-static void
-child_mourn_inferior PARAMS ((void));
+static void child_mourn_inferior (void);
-static int
-child_can_run PARAMS ((void));
+static int child_can_run (void);
-static void
-child_stop PARAMS ((void));
+static void child_stop (void);
#ifndef CHILD_THREAD_ALIVE
-int child_thread_alive PARAMS ((int));
+int child_thread_alive (int);
#endif
-static void init_child_ops PARAMS ((void));
+static void init_child_ops (void);
extern char **environ;
#ifndef CHILD_WAIT
-/*##*/
+/*## */
/* Enable HACK for ttrace work. In
* infttrace.c/require_notification_of_events,
* this is set to 0 so that the loop in child_wait
* won't loop.
*/
int not_same_real_pid = 1;
-/*##*/
+/*## */
/* Wait for child to do something. Return pid of child, or -1 in case
int save_errno;
int status;
char *execd_pathname = NULL;
- int exit_status;
- int related_pid;
- int syscall_id;
- enum target_waitkind kind;
-
- do {
- set_sigint_trap(); /* Causes SIGINT to be passed on to the
- attached process. */
- set_sigio_trap ();
+ int exit_status;
+ int related_pid;
+ int syscall_id;
+ enum target_waitkind kind;
- pid = ptrace_wait (inferior_pid, &status);
+ do
+ {
+ set_sigint_trap (); /* Causes SIGINT to be passed on to the
+ attached process. */
+ set_sigio_trap ();
- save_errno = errno;
+ pid = ptrace_wait (inferior_pid, &status);
- clear_sigio_trap ();
+ save_errno = errno;
- clear_sigint_trap();
+ clear_sigio_trap ();
- if (pid == -1)
- {
- if (save_errno == EINTR)
- continue;
+ clear_sigint_trap ();
- fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n",
- safe_strerror (save_errno));
+ if (pid == -1)
+ {
+ if (save_errno == EINTR)
+ continue;
- /* Claim it exited with unknown signal. */
- ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
- ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
- return -1;
- }
+ fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n",
+ safe_strerror (save_errno));
- /* Did it exit?
- */
- if (target_has_exited (pid, status, &exit_status))
- {
- /* ??rehrauer: For now, ignore this. */
- continue;
- }
+ /* Claim it exited with unknown signal. */
+ ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
+ ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
+ return -1;
+ }
- if (!target_thread_alive (pid))
- {
- ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
- return pid;
- }
-
- if (target_has_forked (pid, &related_pid)
- && ((pid == inferior_pid) || (related_pid == inferior_pid)))
- {
- ourstatus->kind = TARGET_WAITKIND_FORKED;
- ourstatus->value.related_pid = related_pid;
- return pid;
- }
-
- if (target_has_vforked (pid, &related_pid)
- && ((pid == inferior_pid) || (related_pid == inferior_pid)))
- {
- ourstatus->kind = TARGET_WAITKIND_VFORKED;
- ourstatus->value.related_pid = related_pid;
- return pid;
- }
-
- if (target_has_execd (pid, &execd_pathname))
- {
- /* Are we ignoring initial exec events? (This is likely because
- we're in the process of starting up the inferior, and another
- (older) mechanism handles those.) If so, we'll report this
- as a regular stop, not an exec.
- */
- if (inferior_ignoring_startup_exec_events)
- {
- inferior_ignoring_startup_exec_events--;
- }
- else
- {
- ourstatus->kind = TARGET_WAITKIND_EXECD;
- ourstatus->value.execd_pathname = execd_pathname;
- return pid;
- }
- }
-
- /* All we must do with these is communicate their occurrence
- to wait_for_inferior...
+ /* Did it exit?
*/
- if (target_has_syscall_event (pid, &kind, &syscall_id))
- {
- ourstatus->kind = kind;
- ourstatus->value.syscall_id = syscall_id;
- return pid;
- }
-
-/*## } while (pid != inferior_pid); ##*/ /* Some other child died or stopped */
+ if (target_has_exited (pid, status, &exit_status))
+ {
+ /* ??rehrauer: For now, ignore this. */
+ continue;
+ }
+
+ if (!target_thread_alive (pid))
+ {
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ return pid;
+ }
+
+ if (target_has_forked (pid, &related_pid)
+ && ((pid == inferior_pid) || (related_pid == inferior_pid)))
+ {
+ ourstatus->kind = TARGET_WAITKIND_FORKED;
+ ourstatus->value.related_pid = related_pid;
+ return pid;
+ }
+
+ if (target_has_vforked (pid, &related_pid)
+ && ((pid == inferior_pid) || (related_pid == inferior_pid)))
+ {
+ ourstatus->kind = TARGET_WAITKIND_VFORKED;
+ ourstatus->value.related_pid = related_pid;
+ return pid;
+ }
+
+ if (target_has_execd (pid, &execd_pathname))
+ {
+ /* Are we ignoring initial exec events? (This is likely because
+ we're in the process of starting up the inferior, and another
+ (older) mechanism handles those.) If so, we'll report this
+ as a regular stop, not an exec.
+ */
+ if (inferior_ignoring_startup_exec_events)
+ {
+ inferior_ignoring_startup_exec_events--;
+ }
+ else
+ {
+ ourstatus->kind = TARGET_WAITKIND_EXECD;
+ ourstatus->value.execd_pathname = execd_pathname;
+ return pid;
+ }
+ }
+
+ /* All we must do with these is communicate their occurrence
+ to wait_for_inferior...
+ */
+ if (target_has_syscall_event (pid, &kind, &syscall_id))
+ {
+ ourstatus->kind = kind;
+ ourstatus->value.syscall_id = syscall_id;
+ return pid;
+ }
+
+ /*## } while (pid != inferior_pid); ## *//* Some other child died or stopped */
/* hack for thread testing */
- } while( (pid != inferior_pid) && not_same_real_pid );
-/*##*/
+ }
+ while ((pid != inferior_pid) && not_same_real_pid);
+/*## */
store_waitstatus (ourstatus, status);
return pid;
#if !defined(CHILD_POST_WAIT)
void
child_post_wait (pid, wait_status)
- int pid;
- int wait_status;
+ int pid;
+ int wait_status;
{
/* This version of Unix doesn't require a meaningful "post wait"
operation.
- */
+ */
}
#endif
-
+
#ifndef CHILD_THREAD_ALIVE
static void
child_attach_to_process (args, from_tty, after_fork)
- char * args;
- int from_tty;
- int after_fork;
+ char *args;
+ int from_tty;
+ int after_fork;
{
if (!args)
error_no_arg ("process-id to attach");
if ((pid == 0) && (args == dummy))
error ("Illegal process-id: %s\n", args);
- if (pid == getpid()) /* Trying to masturbate? */
+ if (pid == getpid ()) /* Trying to masturbate? */
error ("I refuse to debug myself!");
if (from_tty)
exec_file = (char *) get_exec_file (0);
if (after_fork)
- printf_unfiltered ("Attaching after fork to %s\n",
- target_pid_to_str (pid));
+ printf_unfiltered ("Attaching after fork to %s\n",
+ target_pid_to_str (pid));
else if (exec_file)
printf_unfiltered ("Attaching to program: %s, %s\n", exec_file,
- target_pid_to_str (pid));
- else
- printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
+ target_pid_to_str (pid));
+ else
+ printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
gdb_flush (gdb_stdout);
}
inferior_pid = pid;
push_target (&child_ops);
}
-#endif /* ATTACH_DETACH */
+#endif /* ATTACH_DETACH */
}
#if !defined(CHILD_POST_ATTACH)
void
child_post_attach (pid)
- int pid;
+ int pid;
{
/* This version of Unix doesn't require a meaningful "post attach"
operation by a debugger. */
int from_tty;
{
child_attach_to_process (args, from_tty, 1);
-}
+}
static void
child_detach_from_process (pid, args, from_tty, after_fork)
- int pid;
- char * args;
- int from_tty;
- int after_fork;
+ int pid;
+ char *args;
+ int from_tty;
+ int after_fork;
{
#ifdef ATTACH_DETACH
{
char *exec_file = get_exec_file (0);
if (exec_file == 0)
exec_file = "";
- if (after_fork)
- printf_unfiltered ("Detaching after fork from %s\n",
- target_pid_to_str (pid));
- else
+ if (after_fork)
+ printf_unfiltered ("Detaching after fork from %s\n",
+ target_pid_to_str (pid));
+ else
printf_unfiltered ("Detaching from program: %s, %s\n", exec_file,
- target_pid_to_str (pid));
+ target_pid_to_str (pid));
gdb_flush (gdb_stdout);
}
if (args)
static void
child_require_detach (pid, args, from_tty)
- int pid;
- char * args;
- int from_tty;
+ int pid;
+ char *args;
+ int from_tty;
{
child_detach_from_process (pid, args, from_tty, 1);
}
struct target_ops *ignore;
{
printf_unfiltered ("\tUsing the running image of %s %s.\n",
- attach_flag? "attached": "child", target_pid_to_str (inferior_pid));
+ attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
}
/* ARGSUSED */
/* Stub function which causes the GDB that runs it, to start ptrace-ing
the child process. */
-static void
+static void
ptrace_him (pid)
int pid;
{
between the parent and child processes after the debugger
forks, and before the child execs the debuggee program. This
call basically gives permission for the child to exec.
- */
+ */
target_acknowledge_created_inferior (pid);
/* On some targets, there must be some explicit actions taken after
the inferior has been started up.
- */
+ */
target_post_startup_inferior (pid);
}
char *allargs;
char **env;
{
-
#ifdef HPUXHPPA
- char *tryname;
- char *shell_file;
- char *p;
- char *p1;
- char *path = getenv ("PATH");
- int len;
- struct stat statbuf;
-
- /* On HP-UX, we have a possible bad interaction between
- * the start-up-with-shell code and our catch-fork/catch-exec
- * logic. To avoid the bad interaction, we start up with the
- * C shell ("csh") and pass it the "-f" flag (fast start-up,
- * don't run .cshrc code).
- * See further comments in inferior.h toward the bottom
- * (STARTUP_WITH_SHELL flag) and in fork-child.c
- */
-
- /* Rather than passing in a hard-wired path like "/bin/csh",
- * we look down the PATH to find csh. I took this code from
- * procfs.c, which is the file in the Sun-specific part of GDB
- * analogous to inftarg.c. See procfs.c for more detailed
- * comments. - RT
- */
- shell_file = "csh";
- if (path == NULL)
- path = "/bin:/usr/bin";
- tryname = alloca (strlen (path) + strlen (shell_file) + 2);
- for (p = path; p != NULL; p = p1 ? p1 + 1: NULL)
- {
- p1 = strchr (p, ':');
- if (p1 != NULL)
- len = p1 - p;
- else
- len = strlen (p);
- strncpy (tryname, p, len);
- tryname[len] = '\0';
- strcat (tryname, "/");
- strcat (tryname, shell_file);
- if (access (tryname, X_OK) < 0)
- continue;
- if (stat (tryname, &statbuf) < 0)
- continue;
- if (!S_ISREG (statbuf.st_mode))
- /* We certainly need to reject directories. I'm not quite
- as sure about FIFOs, sockets, etc., but I kind of doubt
- that people want to exec() these things. */
- continue;
- break;
- }
- if (p == NULL)
- /* Not found. I replaced the error() which existed in procfs.c
- * with simply passing in NULL and hoping fork_inferior()
- * can deal with it. - RT
- */
- /* error ("Can't find shell %s in PATH", shell_file); */
- shell_file = NULL;
- else
- shell_file = tryname;
-
fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, pre_fork_inferior, NULL);
#else
- fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, NULL, NULL);
+ fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, NULL, NULL);
#endif
/* We are at the first instruction we care about. */
/* Pedal to the metal... */
#if !defined(CHILD_POST_STARTUP_INFERIOR)
void
child_post_startup_inferior (pid)
- int pid;
+ int pid;
{
/* This version of Unix doesn't require a meaningful "post startup inferior"
operation by a debugger.
- */
+ */
}
#endif
#if !defined(CHILD_ACKNOWLEDGE_CREATED_INFERIOR)
void
child_acknowledge_created_inferior (pid)
- int pid;
+ int pid;
{
/* This version of Unix doesn't require a meaningful "acknowledge created inferior"
operation by a debugger.
- */
+ */
}
#endif
void
child_clone_and_follow_inferior (child_pid, followed_child)
- int child_pid;
- int *followed_child;
+ int child_pid;
+ int *followed_child;
{
clone_and_follow_inferior (child_pid, followed_child);
/* Don't resume CHILD_PID; it's stopped where it ought to be, until
the decision gets made elsewhere how to continue it.
- */
+ */
}
{
/* This version of Unix doesn't require a meaningful "post follow inferior"
operation by a clone debugger.
- */
+ */
}
#endif
#if !defined(CHILD_HAS_VFORKED)
int
child_has_vforked (pid, child_pid)
- int pid;
- int * child_pid;
+ int pid;
+ int *child_pid;
{
/* This version of Unix doesn't support notification of vfork events.
- */
+ */
return 0;
}
#endif
/* This version of Unix doesn't support notification of vfork events.
However, if it did, it probably wouldn't allow vforks to be followed
before the following exec.
- */
+ */
return 0;
}
#endif
#if !defined(CHILD_POST_FOLLOW_VFORK)
void
child_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child)
- int parent_pid;
- int followed_parent;
- int child_pid;
- int followed_child;
+ int parent_pid;
+ int followed_parent;
+ int child_pid;
+ int followed_child;
{
/* This version of Unix doesn't require a meaningful "post follow vfork"
operation by a clone debugger.
- */
+ */
}
#endif
#if !defined(CHILD_HAS_EXECD)
int
child_has_execd (pid, execd_pathname)
- int pid;
- char ** execd_pathname;
+ int pid;
+ char **execd_pathname;
{
/* This version of Unix doesn't support notification of exec events.
- */
+ */
return 0;
}
#endif
child_reported_exec_events_per_exec_call ()
{
/* This version of Unix doesn't support notification of exec events.
- */
+ */
return 1;
}
#endif
#if !defined(CHILD_HAS_SYSCALL_EVENT)
int
child_has_syscall_event (pid, kind, syscall_id)
- int pid;
- enum target_waitkind * kind;
- int * syscall_id;
+ int pid;
+ enum target_waitkind *kind;
+ int *syscall_id;
{
/* This version of Unix doesn't support notification of syscall events.
- */
+ */
return 0;
}
#endif
#if !defined(CHILD_HAS_EXITED)
int
child_has_exited (pid, wait_status, exit_status)
- int pid;
- int wait_status;
- int * exit_status;
+ int pid;
+ int wait_status;
+ int *exit_status;
{
if (WIFEXITED (wait_status))
{
if (WIFSIGNALED (wait_status))
{
- *exit_status = 0; /* ?? Don't know what else to say here. */
+ *exit_status = 0; /* ?? Don't know what else to say here. */
return 1;
}
/* ?? Do we really need to consult the event state, too? Assume the
- wait_state alone suffices.
+ wait_state alone suffices.
*/
return 0;
}
#if !defined(CHILD_ENABLE_EXCEPTION_CALLBACK)
struct symtab_and_line *
child_enable_exception_callback (kind, enable)
- enum exception_event_kind kind;
- int enable;
+ enum exception_event_kind kind;
+ int enable;
{
return (struct symtab_and_line *) NULL;
}
#if !defined(CHILD_PID_TO_EXEC_FILE)
char *
child_pid_to_exec_file (pid)
- int pid;
+ int pid;
{
/* This version of Unix doesn't support translation of a process ID
to the filename of the executable file.
- */
+ */
return NULL;
}
#endif
char *
child_core_file_to_sym_file (core)
- char * core;
+ char *core;
{
/* The target stratum for a running executable need not support
this operation.
- */
+ */
return NULL;
}
+\f
+#if !defined(CHILD_PID_TO_STR)
+char *
+child_pid_to_str (pid)
+ int pid;
+{
+ return normal_pid_to_str (pid);
+}
+#endif
-\f
static void
init_child_ops ()
{
child_ops.to_mourn_inferior = child_mourn_inferior;
child_ops.to_can_run = child_can_run;
child_ops.to_thread_alive = child_thread_alive;
+ child_ops.to_pid_to_str = child_pid_to_str;
child_ops.to_stop = child_stop;
child_ops.to_enable_exception_callback = child_enable_exception_callback;
child_ops.to_get_current_exception_event = child_get_current_exception_event;
projects / deliverable / binutils-gdb.git / blobdiff