1 files changed, 85 insertions, 235 deletions

diff --git a/contrib/gdb/gdb/inftarg.c b/contrib/gdb/gdb/inftarg.c
index 9035310..a6f40ec 100644
--- a/contrib/gdb/gdb/inftarg.c
+++ b/contrib/gdb/gdb/inftarg.c
@@ -1,7 +1,8 @@
 /* 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..
@@ -35,6 +36,7 @@
 #include <fcntl.h>
 
 #include "gdb_wait.h"
+#include "inflow.h"
 
 extern struct symtab_and_line *child_enable_exception_callback (enum
 								exception_event_kind,
@@ -61,20 +63,12 @@ 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);
@@ -104,16 +98,6 @@ int child_suppress_run = 0;	/* Non-zero if inftarg should pretend not to
 
 #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.  */
 
@@ -170,59 +154,7 @@ child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
 	  ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
 	  return pid_to_ptid (pid);
 	}
-
-      if (target_has_forked (pid, &related_pid)
-	  && ((pid == PIDGET (inferior_ptid)) 
-	      || (related_pid == PIDGET (inferior_ptid))))
-	{
-	  ourstatus->kind = TARGET_WAITKIND_FORKED;
-	  ourstatus->value.related_pid = related_pid;
-	  return pid_to_ptid (pid);
-	}
-
-      if (target_has_vforked (pid, &related_pid)
-	  && ((pid == PIDGET (inferior_ptid))
-	      || (related_pid == PIDGET (inferior_ptid))))
-	{
-	  ourstatus->kind = TARGET_WAITKIND_VFORKED;
-	  ourstatus->value.related_pid = related_pid;
-	  return pid_to_ptid (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_to_ptid (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_to_ptid (pid);
-	}
-
-      /*##  } while (pid != PIDGET (inferior_ptid)); ## *//* Some other child died or stopped */
-/* hack for thread testing */
-    }
-  while ((pid != PIDGET (inferior_ptid)) && not_same_real_pid);
-/*## */
+      } while (pid != PIDGET (inferior_ptid)); /* Some other child died or stopped */
 
   store_waitstatus (ourstatus, status);
   return pid_to_ptid (pid);
@@ -257,8 +189,10 @@ child_thread_alive (ptid_t ptid)
 
 #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");
@@ -284,23 +218,17 @@ child_attach_to_process (char *args, int from_tty, int after_fork)
       {
 	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)
+	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", 
+	  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_ptid = pid_to_ptid (pid);
     push_target (&child_ops);
@@ -308,15 +236,6 @@ child_attach_to_process (char *args, int from_tty, int after_fork)
 #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)
@@ -326,68 +245,44 @@ 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_to_ptid (pid)));
-	else
-	  printf_unfiltered ("Detaching from program: %s, %s\n", exec_file,
-			     target_pid_to_str (pid_to_ptid (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 (PIDGET (inferior_ptid), args, from_tty, 0);
-  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);
-}
-
-
 /* 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
@@ -411,7 +306,6 @@ child_files_info (struct target_ops *ignore)
       attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
 }
 
-/* ARGSUSED */
 static void
 child_open (char *arg, int from_tty)
 {
@@ -495,27 +389,6 @@ child_acknowledge_created_inferior (int pid)
 #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)
@@ -552,51 +425,15 @@ child_remove_vfork_catchpoint (int pid)
 }
 #endif
 
-#if !defined(CHILD_HAS_FORKED)
+#if !defined(CHILD_FOLLOW_FORK)
 int
-child_has_forked (int pid, int *child_pid)
+child_follow_fork (int follow_child)
 {
-  /* This version of Unix doesn't support notification of fork events.  */
+  /* This version of Unix doesn't support following fork or vfork events.  */
   return 0;
 }
 #endif
 
-
-#if !defined(CHILD_HAS_VFORKED)
-int
-child_has_vforked (int pid, int *child_pid)
-{
-  /* This version of Unix doesn't support notification of 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)
@@ -615,17 +452,6 @@ child_remove_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)
@@ -636,18 +462,6 @@ 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)
@@ -698,8 +512,6 @@ child_can_run (void)
 static void
 child_stop (void)
 {
-  extern pid_t inferior_process_group;
-
   kill (-inferior_process_group, SIGINT);
 }
 
@@ -739,7 +551,51 @@ child_core_file_to_sym_file (char *core)
    */
   return NULL;
 }
-
+
+/* 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 *
@@ -758,9 +614,7 @@ init_child_ops (void)
   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;
@@ -768,33 +622,28 @@ init_child_ops (void)
   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;
@@ -814,10 +663,10 @@ init_child_ops (void)
 }
 
 /* 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, 
+extern void
+inftarg_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR,
+						       unsigned long,
+						       int, int, int,
 						       void *),
 					      void *))
 {
@@ -825,7 +674,7 @@ inftarg_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR,
 }
 
 /* Take over the 'make_corefile_notes' vector from inftarg.c. */
-extern void 
+extern void
 inftarg_set_make_corefile_notes (char * (*func) (bfd *, int *))
 {
   child_ops.to_make_corefile_notes = func;
@@ -844,7 +693,8 @@ _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;