/* Target-vector operations for controlling Unix child processes, for GDB.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
- 2000, 2002
- Free Software Foundation, Inc.
+
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
+ 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+
Contributed by Cygnus Support.
## Contains temporary hacks..
#include <signal.h>
#include <sys/types.h>
#include <fcntl.h>
-
+#include "observer.h"
#include "gdb_wait.h"
+#include "inflow.h"
extern struct symtab_and_line *child_enable_exception_callback (enum
exception_event_kind,
static ptid_t child_wait (ptid_t, struct target_waitstatus *);
#endif /* CHILD_WAIT */
-#if !defined(CHILD_POST_WAIT)
-void child_post_wait (ptid_t, int);
-#endif
-
static void child_open (char *, int);
static void child_files_info (struct target_ops *);
static void child_detach (char *, int);
-static void child_detach_from_process (int, char *, int, int);
-
static void child_attach (char *, int);
-static void child_attach_to_process (char *, int, int);
-
#if !defined(CHILD_POST_ATTACH)
extern void child_post_attach (int);
#endif
-static void child_require_attach (char *, int);
-
-static void child_require_detach (int, char *, int);
-
static void ptrace_me (void);
static void ptrace_him (int);
-static void child_create_inferior (char *, char *, char **);
+static void child_create_inferior (char *, char *, char **, int);
static void child_mourn_inferior (void);
extern char **environ;
-struct target_ops child_ops;
-
int child_suppress_run = 0; /* Non-zero if inftarg should pretend not to
be a runnable target. Used by targets
that can sit atop inftarg, such as HPUX
attached process. */
set_sigio_trap ();
- pid = ptrace_wait (inferior_ptid, &status);
+ pid = wait (&status);
save_errno = errno;
}
#endif /* CHILD_WAIT */
-#if !defined(CHILD_POST_WAIT)
-void
-child_post_wait (ptid_t ptid, int wait_status)
-{
- /* This version of Unix doesn't require a meaningful "post wait"
- operation.
- */
-}
-#endif
-
-
#ifndef CHILD_THREAD_ALIVE
/* Check to see if the given thread is alive.
#endif
+/* Attach to process PID, then initialize for debugging it. */
+
static void
-child_attach_to_process (char *args, int from_tty, int after_fork)
+child_attach (char *args, int from_tty)
{
+ char *exec_file;
+ int pid;
+ char *dummy;
+
if (!args)
error_no_arg ("process-id to attach");
-#ifndef ATTACH_DETACH
- error ("Can't attach to a process on this machine.");
-#else
- {
- char *exec_file;
- int pid;
- char *dummy;
-
- dummy = args;
- pid = strtol (args, &dummy, 0);
- /* Some targets don't set errno on errors, grrr! */
- if ((pid == 0) && (args == dummy))
+ dummy = args;
+ pid = strtol (args, &dummy, 0);
+ /* Some targets don't set errno on errors, grrr! */
+ if ((pid == 0) && (args == dummy))
error ("Illegal process-id: %s\n", args);
+
+ if (pid == getpid ()) /* Trying to masturbate? */
+ error ("I refuse to debug myself!");
+
+ if (from_tty)
+ {
+ exec_file = (char *) get_exec_file (0);
+
+ if (exec_file)
+ printf_unfiltered ("Attaching to program: %s, %s\n", exec_file,
+ target_pid_to_str (pid_to_ptid (pid)));
+ else
+ printf_unfiltered ("Attaching to %s\n",
+ target_pid_to_str (pid_to_ptid (pid)));
+
+ gdb_flush (gdb_stdout);
+ }
- 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_to_ptid (pid)));
- else if (exec_file)
- printf_unfiltered ("Attaching to program: %s, %s\n", exec_file,
- target_pid_to_str (pid_to_ptid (pid)));
- else
- printf_unfiltered ("Attaching to %s\n",
- target_pid_to_str (pid_to_ptid (pid)));
-
- gdb_flush (gdb_stdout);
- }
-
- if (!after_fork)
- attach (pid);
- else
- REQUIRE_ATTACH (pid);
-
- inferior_ptid = pid_to_ptid (pid);
- push_target (&child_ops);
- }
-#endif /* ATTACH_DETACH */
-}
-
-
-/* Attach to process PID, then initialize for debugging it. */
+ attach (pid);
+
+ inferior_ptid = pid_to_ptid (pid);
+ push_target (&deprecated_child_ops);
-static void
-child_attach (char *args, int from_tty)
-{
- child_attach_to_process (args, from_tty, 0);
+ /* Do this first, before anything has had a chance to query the
+ inferior's symbol table or similar. */
+ observer_notify_inferior_created (¤t_target, from_tty);
}
#if !defined(CHILD_POST_ATTACH)
}
#endif
-static void
-child_require_attach (char *args, int from_tty)
-{
- child_attach_to_process (args, from_tty, 1);
-}
-
-static void
-child_detach_from_process (int pid, char *args, int from_tty, int after_fork)
-{
-#ifdef ATTACH_DETACH
- {
- int siggnal = 0;
-
- if (from_tty)
- {
- 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_to_ptid (pid)));
- else
- printf_unfiltered ("Detaching from program: %s, %s\n", exec_file,
- target_pid_to_str (pid_to_ptid (pid)));
- gdb_flush (gdb_stdout);
- }
- if (args)
- siggnal = atoi (args);
-
- if (!after_fork)
- detach (siggnal);
- else
- REQUIRE_DETACH (pid, siggnal);
- }
-#else
- error ("This version of Unix does not support detaching a process.");
-#endif
-}
-
/* Take a program previously attached to and detaches it.
The program resumes execution and will no longer stop
on signals, etc. We'd better not have left any breakpoints
static void
child_detach (char *args, int from_tty)
{
- child_detach_from_process (PIDGET (inferior_ptid), args, from_tty, 0);
+ int siggnal = 0;
+ int pid = PIDGET (inferior_ptid);
+
+ if (from_tty)
+ {
+ char *exec_file = get_exec_file (0);
+ if (exec_file == 0)
+ exec_file = "";
+ printf_unfiltered ("Detaching from program: %s, %s\n", exec_file,
+ target_pid_to_str (pid_to_ptid (pid)));
+ gdb_flush (gdb_stdout);
+ }
+ if (args)
+ siggnal = atoi (args);
+
+ detach (siggnal);
+
inferior_ptid = null_ptid;
- unpush_target (&child_ops);
-}
-
-static void
-child_require_detach (int pid, char *args, int from_tty)
-{
- child_detach_from_process (pid, args, from_tty, 1);
+ unpush_target (&deprecated_child_ops);
}
-
/* Get ready to modify the registers array. On machines which store
individual registers, this doesn't need to do anything. On machines
which store all the registers in one fell swoop, this makes sure
attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
}
-/* ARGSUSED */
static void
child_open (char *arg, int from_tty)
{
ptrace_me (void)
{
/* "Trace me, Dr. Memory!" */
- call_ptrace (0, 0, (PTRACE_ARG3_TYPE) 0, 0);
+ call_ptrace (0, 0, (PTRACE_TYPE_ARG3) 0, 0);
}
/* Stub function which causes the GDB that runs it, to start ptrace-ing
static void
ptrace_him (int pid)
{
- push_target (&child_ops);
+ push_target (&deprecated_child_ops);
/* On some targets, there must be some explicit synchronization
between the parent and child processes after the debugger
ENV is the environment vector to pass. Errors reported with error(). */
static void
-child_create_inferior (char *exec_file, char *allargs, char **env)
+child_create_inferior (char *exec_file, char *allargs, char **env,
+ int from_tty)
{
-#ifdef HPUXHPPA
- 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);
-#endif
+
/* We are at the first instruction we care about. */
+ observer_notify_inferior_created (¤t_target, from_tty);
/* Pedal to the metal... */
proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
}
static void
child_mourn_inferior (void)
{
- unpush_target (&child_ops);
+ unpush_target (&deprecated_child_ops);
generic_mourn_inferior ();
}
static void
child_stop (void)
{
- extern pid_t inferior_process_group;
-
kill (-inferior_process_group, SIGINT);
}
*/
return NULL;
}
-\f
+
+/* Perform a partial transfer to/from the specified object. For
+ memory transfers, fall back to the old memory xfer functions. */
+
+static LONGEST
+child_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, void *readbuf,
+ const void *writebuf, ULONGEST offset, LONGEST len)
+{
+ switch (object)
+ {
+ case TARGET_OBJECT_MEMORY:
+ if (readbuf)
+ return child_xfer_memory (offset, readbuf, len, 0/*write*/,
+ NULL, ops);
+ if (writebuf)
+ return child_xfer_memory (offset, (void *) writebuf, len, 1/*write*/,
+ NULL, ops);
+ return -1;
+
+ case TARGET_OBJECT_UNWIND_TABLE:
+#ifndef NATIVE_XFER_UNWIND_TABLE
+#define NATIVE_XFER_UNWIND_TABLE(OPS,OBJECT,ANNEX,WRITEBUF,READBUF,OFFSET,LEN) (-1)
+#endif
+ return NATIVE_XFER_UNWIND_TABLE (ops, object, annex, readbuf, writebuf,
+ offset, len);
+
+ case TARGET_OBJECT_AUXV:
+#ifndef NATIVE_XFER_AUXV
+#define NATIVE_XFER_AUXV(OPS,OBJECT,ANNEX,WRITEBUF,READBUF,OFFSET,LEN) (-1)
+#endif
+ return NATIVE_XFER_AUXV (ops, object, annex, readbuf, writebuf,
+ offset, len);
+
+ default:
+ return -1;
+ }
+}
#if !defined(CHILD_PID_TO_STR)
char *
static void
init_child_ops (void)
{
- child_ops.to_shortname = "child";
- child_ops.to_longname = "Unix child process";
- child_ops.to_doc = "Unix child process (started by the \"run\" command).";
- child_ops.to_open = child_open;
- child_ops.to_attach = child_attach;
- child_ops.to_post_attach = child_post_attach;
- child_ops.to_require_attach = child_require_attach;
- child_ops.to_detach = child_detach;
- child_ops.to_require_detach = child_require_detach;
- child_ops.to_resume = child_resume;
- child_ops.to_wait = child_wait;
- child_ops.to_post_wait = child_post_wait;
- child_ops.to_fetch_registers = fetch_inferior_registers;
- child_ops.to_store_registers = store_inferior_registers;
- child_ops.to_prepare_to_store = child_prepare_to_store;
- child_ops.to_xfer_memory = child_xfer_memory;
- child_ops.to_files_info = child_files_info;
- child_ops.to_insert_breakpoint = memory_insert_breakpoint;
- child_ops.to_remove_breakpoint = memory_remove_breakpoint;
- child_ops.to_terminal_init = terminal_init_inferior;
- child_ops.to_terminal_inferior = terminal_inferior;
- child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
- child_ops.to_terminal_save_ours = terminal_save_ours;
- child_ops.to_terminal_ours = terminal_ours;
- child_ops.to_terminal_info = child_terminal_info;
- child_ops.to_kill = kill_inferior;
- child_ops.to_create_inferior = child_create_inferior;
- child_ops.to_post_startup_inferior = child_post_startup_inferior;
- child_ops.to_acknowledge_created_inferior = child_acknowledge_created_inferior;
- child_ops.to_insert_fork_catchpoint = child_insert_fork_catchpoint;
- child_ops.to_remove_fork_catchpoint = child_remove_fork_catchpoint;
- child_ops.to_insert_vfork_catchpoint = child_insert_vfork_catchpoint;
- child_ops.to_remove_vfork_catchpoint = child_remove_vfork_catchpoint;
- child_ops.to_follow_fork = child_follow_fork;
- child_ops.to_insert_exec_catchpoint = child_insert_exec_catchpoint;
- child_ops.to_remove_exec_catchpoint = child_remove_exec_catchpoint;
- child_ops.to_reported_exec_events_per_exec_call = child_reported_exec_events_per_exec_call;
- child_ops.to_has_exited = child_has_exited;
- 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;
- child_ops.to_pid_to_exec_file = child_pid_to_exec_file;
- child_ops.to_stratum = process_stratum;
- child_ops.to_has_all_memory = 1;
- child_ops.to_has_memory = 1;
- child_ops.to_has_stack = 1;
- child_ops.to_has_registers = 1;
- child_ops.to_has_execution = 1;
- child_ops.to_magic = OPS_MAGIC;
-}
-
-/* Take over the 'find_mapped_memory' vector from inftarg.c. */
-extern void
-inftarg_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR,
- unsigned long,
- int, int, int,
- void *),
- void *))
-{
- child_ops.to_find_memory_regions = func;
-}
-
-/* Take over the 'make_corefile_notes' vector from inftarg.c. */
-extern void
-inftarg_set_make_corefile_notes (char * (*func) (bfd *, int *))
-{
- child_ops.to_make_corefile_notes = func;
+ deprecated_child_ops.to_shortname = "child";
+ deprecated_child_ops.to_longname = "Unix child process";
+ deprecated_child_ops.to_doc = "Unix child process (started by the \"run\" command).";
+ deprecated_child_ops.to_open = child_open;
+ deprecated_child_ops.to_attach = child_attach;
+ deprecated_child_ops.to_post_attach = child_post_attach;
+ deprecated_child_ops.to_detach = child_detach;
+ deprecated_child_ops.to_resume = child_resume;
+ deprecated_child_ops.to_wait = child_wait;
+ deprecated_child_ops.to_fetch_registers = fetch_inferior_registers;
+ deprecated_child_ops.to_store_registers = store_inferior_registers;
+ deprecated_child_ops.to_prepare_to_store = child_prepare_to_store;
+ deprecated_child_ops.deprecated_xfer_memory = child_xfer_memory;
+ deprecated_child_ops.to_xfer_partial = child_xfer_partial;
+ deprecated_child_ops.to_files_info = child_files_info;
+ deprecated_child_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ deprecated_child_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ deprecated_child_ops.to_terminal_init = terminal_init_inferior;
+ deprecated_child_ops.to_terminal_inferior = terminal_inferior;
+ deprecated_child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
+ deprecated_child_ops.to_terminal_save_ours = terminal_save_ours;
+ deprecated_child_ops.to_terminal_ours = terminal_ours;
+ deprecated_child_ops.to_terminal_info = child_terminal_info;
+ deprecated_child_ops.to_kill = kill_inferior;
+ deprecated_child_ops.to_create_inferior = child_create_inferior;
+ deprecated_child_ops.to_post_startup_inferior = child_post_startup_inferior;
+ deprecated_child_ops.to_acknowledge_created_inferior = child_acknowledge_created_inferior;
+ deprecated_child_ops.to_insert_fork_catchpoint = child_insert_fork_catchpoint;
+ deprecated_child_ops.to_remove_fork_catchpoint = child_remove_fork_catchpoint;
+ deprecated_child_ops.to_insert_vfork_catchpoint = child_insert_vfork_catchpoint;
+ deprecated_child_ops.to_remove_vfork_catchpoint = child_remove_vfork_catchpoint;
+ deprecated_child_ops.to_follow_fork = child_follow_fork;
+ deprecated_child_ops.to_insert_exec_catchpoint = child_insert_exec_catchpoint;
+ deprecated_child_ops.to_remove_exec_catchpoint = child_remove_exec_catchpoint;
+ deprecated_child_ops.to_reported_exec_events_per_exec_call = child_reported_exec_events_per_exec_call;
+ deprecated_child_ops.to_has_exited = child_has_exited;
+ deprecated_child_ops.to_mourn_inferior = child_mourn_inferior;
+ deprecated_child_ops.to_can_run = child_can_run;
+ deprecated_child_ops.to_thread_alive = child_thread_alive;
+ deprecated_child_ops.to_pid_to_str = child_pid_to_str;
+ deprecated_child_ops.to_stop = child_stop;
+ deprecated_child_ops.to_enable_exception_callback = child_enable_exception_callback;
+ deprecated_child_ops.to_get_current_exception_event = child_get_current_exception_event;
+ deprecated_child_ops.to_pid_to_exec_file = child_pid_to_exec_file;
+ deprecated_child_ops.to_stratum = process_stratum;
+ deprecated_child_ops.to_has_all_memory = 1;
+ deprecated_child_ops.to_has_memory = 1;
+ deprecated_child_ops.to_has_stack = 1;
+ deprecated_child_ops.to_has_registers = 1;
+ deprecated_child_ops.to_has_execution = 1;
+ deprecated_child_ops.to_magic = OPS_MAGIC;
}
void
#define PROC_NAME_FMT "/proc/%05d"
#endif
sprintf (procname, PROC_NAME_FMT, getpid ());
- if ((fd = open (procname, O_RDONLY)) >= 0)
+ fd = open (procname, O_RDONLY);
+ if (fd >= 0)
{
close (fd);
return;
#endif
init_child_ops ();
- add_target (&child_ops);
+ add_target (&deprecated_child_ops);
}
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