* config/sun4os4.mh (XDEPFILES): fork-child.o removed.

[deliverable/binutils-gdb.git] / gdb / target.c

diff --git a/gdb/target.c b/gdb/target.c
index 93bb64e89ba028e7f66014b683d6d05ed409c383..5af8aae8bc81ca23c94a3235fb457bb176e11468 100644 (file)
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -58,11 +58,18 @@ tcomplain PARAMS ((void));
 static int
 nomemory PARAMS ((CORE_ADDR, char *, int, int));
 
+static int
+return_zero PARAMS ((void));
+
 static void
 ignore PARAMS ((void));
+
 static void
 target_command PARAMS ((char *, int));
 
+static struct target_ops *
+find_default_run_target PARAMS ((char *));
+
 /* Pointer to array of target architecture structures; the size of the
    array; the current index into the array; the allocated size of the 
    array.  */
@@ -76,15 +83,18 @@ unsigned target_struct_allocsize;
    current target.  */
 
 struct target_ops dummy_target = {"None", "None", "",
-    0, 0, 0, 0,                /* open, close, attach, detach */
+    0, 0,              /* open, close */
+    find_default_attach, 0,  /* attach, detach */
     0, 0,              /* resume, wait */
-    0, 0, 0, 0, 0,     /* registers */
+    0, 0, 0,           /* registers */
     0, 0,              /* memory */
     0, 0,              /* bkpts */
     0, 0, 0, 0, 0,     /* terminal */
     0, 0,              /* kill, load */
     0,                         /* lookup_symbol */
-    0, 0,              /* create_inferior, mourn_inferior */
+    find_default_create_inferior, /* create_inferior */
+    0,                 /* mourn_inferior */
+    0,                 /* can_run */
     dummy_stratum, 0,  /* stratum, next */
     0, 0, 0, 0, 0,     /* all mem, mem, stack, regs, exec */
     0, 0,              /* section pointers */
@@ -112,7 +122,8 @@ target_command (arg, from_tty)
      char *arg;
      int from_tty;
 {
-  fputs_filtered ("Argument required (target name).\n", stdout);
+  fputs_filtered ("Argument required (target name).  Try `help target'\n",
+                 stdout);
 }
 
 /* Add a possible target architecture to the list.  */
@@ -123,7 +134,7 @@ add_target (t)
 {
   if (t->to_magic != OPS_MAGIC)
     {
-      fprintf_filtered(stderr, "Magic number of %s target struct wrong\n", 
+      fprintf(stderr, "Magic number of %s target struct wrong\n", 
        t->to_shortname);
       abort();
     }
@@ -202,7 +213,7 @@ default_terminal_info (args, from_tty)
      char *args;
      int from_tty;
 {
-  printf_filtered("No saved terminal information.\n");
+  printf("No saved terminal information.\n");
 }
 
 #if 0
@@ -245,7 +256,7 @@ kill_or_be_killed (from_tty)
 {
   if (target_has_execution)
     {
-      printf_filtered ("You are already running a program:\n");
+      printf ("You are already running a program:\n");
       target_files_info ();
       if (query ("Kill it? ")) {
        target_kill ();
@@ -290,7 +301,7 @@ cleanup_target (t)
      the struct definition, but not all the places that initialize one.  */
   if (t->to_magic != OPS_MAGIC)
     {
-      fprintf_filtered(stderr, "Magic number of %s target struct wrong\n", 
+      fprintf(stderr, "Magic number of %s target struct wrong\n", 
        t->to_shortname);
       abort();
     }
@@ -309,8 +320,6 @@ cleanup_target (t)
   de_fault (to_fetch_registers,        (void (*)())ignore);
   de_fault (to_store_registers,                (void (*)())noprocess);
   de_fault (to_prepare_to_store,       (void (*)())noprocess);
-  de_fault (to_convert_to_virtual,     host_convert_to_virtual);
-  de_fault (to_convert_from_virtual,   host_convert_from_virtual);
   de_fault (to_xfer_memory,            (int (*)())nomemory);
   de_fault (to_files_info,             (void (*)())ignore);
   de_fault (to_insert_breakpoint,      memory_insert_breakpoint);
@@ -325,6 +334,7 @@ cleanup_target (t)
   de_fault (to_lookup_symbol,          nosymbol);
   de_fault (to_create_inferior,                maybe_kill_then_create_inferior);
   de_fault (to_mourn_inferior,         (void (*)())noprocess);
+  de_fault (to_can_run,                        return_zero);
   de_fault (to_next,                   0);
   de_fault (to_has_all_memory,         0);
   de_fault (to_has_memory,             0);
@@ -547,7 +557,7 @@ target_info (args, from_tty)
   int has_all_mem = 0;
   
   if (symfile_objfile != NULL)
-    printf_filtered ("Symbols from \"%s\".\n", symfile_objfile->name);
+    printf ("Symbols from \"%s\".\n", symfile_objfile->name);
 
 #ifdef FILES_INFO_HOOK
   if (FILES_INFO_HOOK ())
@@ -561,8 +571,8 @@ target_info (args, from_tty)
       if ((int)(t->to_stratum) <= (int)dummy_stratum)
        continue;
       if (has_all_mem)
-       printf_filtered("\tWhile running this, gdb does not access memory from...\n");
-      printf_filtered("%s:\n", t->to_longname);
+       printf("\tWhile running this, gdb does not access memory from...\n");
+      printf("%s:\n", t->to_longname);
       (t->to_files_info)(t);
       has_all_mem = t->to_has_all_memory;
     }
@@ -586,6 +596,69 @@ target_preopen (from_tty)
     }
 }
 
+/* Look through the list of possible targets for a target that can
+   execute a run or attach command without any other data.  This is
+   used to locate the default process stratum.
+
+   Result is always valid (error() is called for errors).  */
+
+static struct target_ops *
+find_default_run_target (do_mesg)
+     char *do_mesg;
+{
+  struct target_ops **t;
+  struct target_ops *runable;
+  int count;
+
+  count = 0;
+
+  for (t = target_structs; t < target_structs + target_struct_size;
+       ++t)
+    {
+      if (target_can_run(*t))
+       {
+         runable = *t;
+         ++count;
+       }
+    }
+
+  if (count != 1)
+    error ("Don't know how to %s.  Try \"help target\".", do_mesg);
+
+  return runable;
+}
+
+void
+find_default_attach (args, from_tty)
+     char *args;
+     int from_tty;
+{
+  struct target_ops *t;
+
+  t = find_default_run_target("attach");
+  (t->to_attach) (args, from_tty);
+  return;
+}
+
+void
+find_default_create_inferior (exec_file, allargs, env)
+     char *exec_file;
+     char *allargs;
+     char **env;
+{
+  struct target_ops *t;
+
+  t = find_default_run_target("run");
+  (t->to_create_inferior) (exec_file, allargs, env);
+  return;
+}
+
+static int
+return_zero ()
+{
+  return 0;
+}
+
 static char targ_desc[] = 
     "Names of targets and files being debugged.\n\
 Shows the entire stack of targets currently in use (including the exec-file,\n\