/* Target-vector operations for controlling Unix child processes, for GDB.
- Copyright 1990-1996, 1998, 1999 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 <fcntl.h>
#include "gdb_wait.h"
+#include "inflow.h"
extern struct symtab_and_line *child_enable_exception_callback (enum
exception_event_kind,
static void child_prepare_to_store (void);
#ifndef CHILD_WAIT
-static int child_wait (int, struct target_waitstatus *);
+static ptid_t child_wait (ptid_t, struct target_waitstatus *);
#endif /* CHILD_WAIT */
#if !defined(CHILD_POST_WAIT)
-void child_post_wait (int, int);
+void child_post_wait (ptid_t, int);
#endif
static void child_open (char *, int);
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_stop (void);
#ifndef CHILD_THREAD_ALIVE
-int child_thread_alive (int);
+int child_thread_alive (ptid_t);
#endif
static void init_child_ops (void);
#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
of error; store status through argument pointer OURSTATUS. */
-static int
-child_wait (int pid, struct target_waitstatus *ourstatus)
+static ptid_t
+child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
{
int save_errno;
int status;
int related_pid;
int syscall_id;
enum target_waitkind kind;
+ int pid;
do
{
attached process. */
set_sigio_trap ();
- pid = ptrace_wait (inferior_pid, &status);
+ pid = ptrace_wait (inferior_ptid, &status);
save_errno = errno;
/* Claim it exited with unknown signal. */
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
- return -1;
+ return pid_to_ptid (-1);
}
/* Did it exit?
continue;
}
- if (!target_thread_alive (pid))
+ if (!target_thread_alive (pid_to_ptid (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;
+ return pid_to_ptid (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 != PIDGET (inferior_ptid)); /* Some other child died or stopped */
store_waitstatus (ourstatus, status);
- return pid;
+ return pid_to_ptid (pid);
}
#endif /* CHILD_WAIT */
#if !defined(CHILD_POST_WAIT)
void
-child_post_wait (int pid, int wait_status)
+child_post_wait (ptid_t ptid, int wait_status)
{
/* This version of Unix doesn't require a meaningful "post wait"
operation.
for now we're going to try and be compatable with the old thread
code. */
int
-child_thread_alive (int pid)
+child_thread_alive (ptid_t ptid)
{
+ pid_t pid = PIDGET (ptid);
+
return (kill (pid, 0) != -1);
}
#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)
{
if (!args)
error_no_arg ("process-id to attach");
{
exec_file = (char *) get_exec_file (0);
- if (after_fork)
- printf_unfiltered ("Attaching after fork to %s\n",
- target_pid_to_str (pid));
- else if (exec_file)
+ if (exec_file)
printf_unfiltered ("Attaching to program: %s, %s\n", exec_file,
- target_pid_to_str (pid));
+ target_pid_to_str (pid_to_ptid (pid)));
else
- printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
+ 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);
+ attach (pid);
- inferior_pid = pid;
+ inferior_ptid = pid_to_ptid (pid);
push_target (&child_ops);
}
#endif /* ATTACH_DETACH */
}
-
-/* Attach to process PID, then initialize for debugging it. */
-
-static void
-child_attach (char *args, int from_tty)
-{
- child_attach_to_process (args, from_tty, 0);
-}
-
#if !defined(CHILD_POST_ATTACH)
void
child_post_attach (int pid)
}
#endif
-static void
-child_require_attach (char *args, int from_tty)
-{
- child_attach_to_process (args, from_tty, 1);
-}
+/* 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
+ in the program or it'll die when it hits one. For this
+ to work, it may be necessary for the process to have been
+ previously attached. It *might* work if the program was
+ started via the normal ptrace (PTRACE_TRACEME). */
static void
-child_detach_from_process (int pid, char *args, int from_tty, int after_fork)
+child_detach (char *args, int from_tty)
{
#ifdef ATTACH_DETACH
{
int siggnal = 0;
+ int pid = PIDGET (inferior_ptid);
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));
- else
- printf_unfiltered ("Detaching from program: %s, %s\n", exec_file,
- target_pid_to_str (pid));
+ 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);
+ detach (siggnal);
+
+ inferior_ptid = null_ptid;
+ unpush_target (&child_ops);
}
#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
- in the program or it'll die when it hits one. For this
- to work, it may be necessary for the process to have been
- previously attached. It *might* work if the program was
- started via the normal ptrace (PTRACE_TRACEME). */
-
-static void
-child_detach (char *args, int from_tty)
-{
- child_detach_from_process (inferior_pid, args, from_tty, 0);
- inferior_pid = 0;
- 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);
-}
-
-
/* 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
child_files_info (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_ptid));
}
-/* ARGSUSED */
static void
child_open (char *arg, int from_tty)
{
/* On some targets, there must be some explicit actions taken after
the inferior has been started up.
*/
- target_post_startup_inferior (pid);
+ target_post_startup_inferior (pid_to_ptid (pid));
}
-/* Start an inferior Unix child process and sets inferior_pid to its pid.
+/* Start an inferior Unix child process and sets inferior_ptid to its pid.
EXEC_FILE is the file to run.
ALLARGS is a string containing the arguments to the program.
ENV is the environment vector to pass. Errors reported with error(). */
#if !defined(CHILD_POST_STARTUP_INFERIOR)
void
-child_post_startup_inferior (int pid)
+child_post_startup_inferior (ptid_t ptid)
{
/* This version of Unix doesn't require a meaningful "post startup inferior"
operation by a debugger.
#endif
-void
-child_clone_and_follow_inferior (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.
- */
-}
-
-
-#if !defined(CHILD_POST_FOLLOW_INFERIOR_BY_CLONE)
-void
-child_post_follow_inferior_by_clone (void)
-{
- /* This version of Unix doesn't require a meaningful "post follow inferior"
- operation by a clone debugger.
- */
-}
-#endif
-
#if !defined(CHILD_INSERT_FORK_CATCHPOINT)
int
child_insert_fork_catchpoint (int pid)
}
#endif
-#if !defined(CHILD_HAS_FORKED)
-int
-child_has_forked (int pid, int *child_pid)
-{
- /* This version of Unix doesn't support notification of fork events. */
- return 0;
-}
-#endif
-
-
-#if !defined(CHILD_HAS_VFORKED)
+#if !defined(CHILD_FOLLOW_FORK)
int
-child_has_vforked (int pid, int *child_pid)
+child_follow_fork (int follow_child)
{
- /* This version of Unix doesn't support notification of vfork events.
- */
+ /* This version of Unix doesn't support following fork or vfork events. */
return 0;
}
#endif
-
-#if !defined(CHILD_CAN_FOLLOW_VFORK_PRIOR_TO_EXEC)
-int
-child_can_follow_vfork_prior_to_exec (void)
-{
- /* 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 (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_INSERT_EXEC_CATCHPOINT)
int
child_insert_exec_catchpoint (int pid)
}
#endif
-#if !defined(CHILD_HAS_EXECD)
-int
-child_has_execd (int pid, char **execd_pathname)
-{
- /* This version of Unix doesn't support notification of exec events.
- */
- return 0;
-}
-#endif
-
-
#if !defined(CHILD_REPORTED_EXEC_EVENTS_PER_EXEC_CALL)
int
child_reported_exec_events_per_exec_call (void)
}
#endif
-
-#if !defined(CHILD_HAS_SYSCALL_EVENT)
-int
-child_has_syscall_event (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 (int pid, int wait_status, int *exit_status)
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, readbuf, 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);
+
+ case TARGET_OBJECT_WCOOKIE:
+#ifndef NATIVE_XFER_WCOOKIE
+#define NATIVE_XFER_WCOOKIE(OPS,OBJECT,ANNEX,WRITEBUF,READBUF,OFFSET,LEN) (-1)
+#endif
+ return NATIVE_XFER_WCOOKIE (ops, object, annex, readbuf, writebuf,
+ offset, len);
+
+ default:
+ return -1;
+ }
+}
#if !defined(CHILD_PID_TO_STR)
char *
-child_pid_to_str (int pid)
+child_pid_to_str (ptid_t ptid)
{
- return normal_pid_to_str (pid);
+ return normal_pid_to_str (ptid);
}
#endif
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_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_xfer_partial = child_xfer_partial;
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_clone_and_follow_inferior = child_clone_and_follow_inferior;
- child_ops.to_post_follow_inferior_by_clone = child_post_follow_inferior_by_clone;
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_has_forked = child_has_forked;
- child_ops.to_has_vforked = child_has_vforked;
- child_ops.to_can_follow_vfork_prior_to_exec = child_can_follow_vfork_prior_to_exec;
- child_ops.to_post_follow_vfork = child_post_follow_vfork;
+ 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_has_execd = child_has_execd;
child_ops.to_reported_exec_events_per_exec_call = child_reported_exec_events_per_exec_call;
- child_ops.to_has_syscall_event = child_has_syscall_event;
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_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_core_file_to_sym_file = child_core_file_to_sym_file;
child_ops.to_stratum = process_stratum;
child_ops.to_has_all_memory = 1;
child_ops.to_has_memory = 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;
+}
+
void
_initialize_inftarg (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;
projects / deliverable / binutils-gdb.git / blobdiff