[1/4] constify to_load

diff --git a/gdb/defs.h b/gdb/defs.h
index b7e9ff4..511279a 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -291,7 +291,7 @@  extern char *re_comp (const char *);
 extern void symbol_file_command (char *, int);
 
 /* * Remote targets may wish to use this as their load function.  */
-extern void generic_load (char *name, int from_tty);
+extern void generic_load (const char *name, int from_tty);
 
 /* * Report on STREAM the performance of memory transfer operation,
    such as 'load'.
diff --git a/gdb/m32r-rom.c b/gdb/m32r-rom.c
index 2ca23ae..0ab252a 100644
--- a/gdb/m32r-rom.c
+++ b/gdb/m32r-rom.c
@@ -196,7 +196,7 @@  m32r_load (char *filename, int from_tty)
 }
 
 static void
-m32r_load_gen (struct target_ops *self, char *filename, int from_tty)
+m32r_load_gen (struct target_ops *self, const char *filename, int from_tty)
 {
   generic_load (filename, from_tty);
 }
diff --git a/gdb/monitor.c b/gdb/monitor.c
index 4a57d5e..61f0dff 100644
--- a/gdb/monitor.c
+++ b/gdb/monitor.c
@@ -2200,7 +2200,7 @@  monitor_wait_srec_ack (void)
 /* monitor_load -- download a file.  */
 
 static void
-monitor_load (struct target_ops *self, char *args, int from_tty)
+monitor_load (struct target_ops *self, const char *args, int from_tty)
 {
   CORE_ADDR load_offset = 0;
   char **argv;
diff --git a/gdb/remote-m32r-sdi.c b/gdb/remote-m32r-sdi.c
index 9c57171..37efaec 100644
--- a/gdb/remote-m32r-sdi.c
+++ b/gdb/remote-m32r-sdi.c
@@ -1238,9 +1238,9 @@  m32r_remove_breakpoint (struct target_ops *ops,
 }
 
 static void
-m32r_load (struct target_ops *self, char *args, int from_tty)
+m32r_load (struct target_ops *self, const char *args, int from_tty)
 {
-  struct cleanup *old_chain;
+  struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
   asection *section;
   bfd *pbfd;
   bfd_vma entry;
@@ -1258,17 +1258,11 @@  m32r_load (struct target_ops *self, char *args, int from_tty)
 
   while (*args != '\000')
     {
-      char *arg;
+      char *arg = extract_arg_const (&args);
 
-      args = skip_spaces (args);
-
-      arg = args;
-
-      while ((*args != '\000') && !isspace (*args))
-	args++;
-
-      if (*args != '\000')
-	*args++ = '\000';
+      if (arg == NULL)
+	break;
+      make_cleanup (xfree, arg);
 
       if (*arg != '-')
 	filename = arg;
@@ -1285,11 +1279,8 @@  m32r_load (struct target_ops *self, char *args, int from_tty)
 
   pbfd = gdb_bfd_open (filename, gnutarget, -1);
   if (pbfd == NULL)
-    {
-      perror_with_name (filename);
-      return;
-    }
-  old_chain = make_cleanup_bfd_unref (pbfd);
+    perror_with_name (filename);
+  make_cleanup_bfd_unref (pbfd);
 
   if (!bfd_check_format (pbfd, bfd_object))
     error (_("\"%s\" is not an object file: %s"), filename,
diff --git a/gdb/remote-mips.c b/gdb/remote-mips.c
index 7f0d957..277621d 100644
--- a/gdb/remote-mips.c
+++ b/gdb/remote-mips.c
@@ -128,9 +128,7 @@  static void pmon_end_download (int final, int bintotal);
 
 static void pmon_download (char *buffer, int length);
 
-static void pmon_load_fast (char *file);
-
-static void mips_load (struct target_ops *self, char *file, int from_tty);
+static void mips_load (struct target_ops *self, const char *file, int from_tty);
 
 static int mips_make_srec (char *buffer, int type, CORE_ADDR memaddr,
 			   unsigned char *myaddr, int len);
@@ -2804,7 +2802,7 @@  send_srec (char *srec, int len, CORE_ADDR addr)
 /*  Download a binary file by converting it to S records.  */
 
 static void
-mips_load_srec (char *args)
+mips_load_srec (const char *args)
 {
   bfd *abfd;
   asection *s;
@@ -3389,7 +3387,7 @@  pmon_download (char *buffer, int length)
    using the FastLoad format.  */
 
 static void
-pmon_load_fast (char *file)
+pmon_load_fast (const char *file)
 {
   bfd *abfd;
   asection *s;
@@ -3548,7 +3546,7 @@  pmon_load_fast (char *file)
 /* mips_load -- download a file.  */
 
 static void
-mips_load (struct target_ops *self, char *file, int from_tty)
+mips_load (struct target_ops *self, const char *file, int from_tty)
 {
   struct regcache *regcache;
 
diff --git a/gdb/remote-sim.c b/gdb/remote-sim.c
index 2e7db4b..4097372 100644
--- a/gdb/remote-sim.c
+++ b/gdb/remote-sim.c
@@ -73,7 +73,8 @@  static void gdb_os_error (host_callback *, const char *, ...)
 
 static void gdbsim_kill (struct target_ops *);
 
-static void gdbsim_load (struct target_ops *self, char *prog, int fromtty);
+static void gdbsim_load (struct target_ops *self, const char *prog,
+			 int fromtty);
 
 static void gdbsim_open (char *args, int from_tty);
 
@@ -562,7 +563,7 @@  gdbsim_kill (struct target_ops *ops)
    GDB's symbol tables to match.  */
 
 static void
-gdbsim_load (struct target_ops *self, char *args, int fromtty)
+gdbsim_load (struct target_ops *self, const char *args, int fromtty)
 {
   char **argv;
   const char *prog;
diff --git a/gdb/remote.c b/gdb/remote.c
index b5318f1..b6f3ddb 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -11378,7 +11378,7 @@  remote_augmented_libraries_svr4_read (struct target_ops *self)
 /* Implementation of to_load.  */
 
 static void
-remote_load (struct target_ops *self, char *name, int from_tty)
+remote_load (struct target_ops *self, const char *name, int from_tty)
 {
   generic_load (name, from_tty);
 }
diff --git a/gdb/symfile.c b/gdb/symfile.c
index 84858dc..42707ac 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -2090,7 +2090,7 @@  clear_memory_write_data (void *arg)
 }
 
 void
-generic_load (char *args, int from_tty)
+generic_load (const char *args, int from_tty)
 {
   bfd *loadfile_bfd;
   struct timeval start_time, end_time;
diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index 4eefae8..ed0aea2 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -381,14 +381,14 @@  tdefault_kill (struct target_ops *self)
 }
 
 static void
-delegate_load (struct target_ops *self, char *arg1, int arg2)
+delegate_load (struct target_ops *self, const char *arg1, int arg2)
 {
   self = self->beneath;
   self->to_load (self, arg1, arg2);
 }
 
 static void
-tdefault_load (struct target_ops *self, char *arg1, int arg2)
+tdefault_load (struct target_ops *self, const char *arg1, int arg2)
 {
   tcomplain ();
 }
diff --git a/gdb/target.c b/gdb/target.c
index 075425d..c2b0ea1 100644
--- a/gdb/target.c
+++ b/gdb/target.c
@@ -169,7 +169,7 @@  static void debug_to_terminal_save_ours (struct target_ops *self);
 
 static void debug_to_terminal_ours (struct target_ops *self);
 
-static void debug_to_load (struct target_ops *self, char *, int);
+static void debug_to_load (struct target_ops *self, const char *, int);
 
 static int debug_to_can_run (struct target_ops *self);
 
@@ -476,7 +476,7 @@  target_kill (void)
 }
 
 void
-target_load (char *arg, int from_tty)
+target_load (const char *arg, int from_tty)
 {
   target_dcache_invalidate ();
   (*current_target.to_load) (&current_target, arg, from_tty);
@@ -3860,7 +3860,7 @@  debug_to_terminal_info (struct target_ops *self,
 }
 
 static void
-debug_to_load (struct target_ops *self, char *args, int from_tty)
+debug_to_load (struct target_ops *self, const char *args, int from_tty)
 {
   debug_target.to_load (&debug_target, args, from_tty);
 
diff --git a/gdb/target.h b/gdb/target.h
index e563f2f..0effa30 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -499,7 +499,7 @@  struct target_ops
       TARGET_DEFAULT_FUNC (default_terminal_info);
     void (*to_kill) (struct target_ops *)
       TARGET_DEFAULT_NORETURN (noprocess ());
-    void (*to_load) (struct target_ops *, char *, int)
+    void (*to_load) (struct target_ops *, const char *, int)
       TARGET_DEFAULT_NORETURN (tcomplain ());
     /* Start an inferior process and set inferior_ptid to its pid.
        EXEC_FILE is the file to run.
@@ -1415,7 +1415,7 @@  extern void target_kill (void);
    sections.  The target may define switches, or other non-switch
    arguments, as it pleases.  */
 
-extern void target_load (char *arg, int from_tty);
+extern void target_load (const char *arg, int from_tty);
 
 /* Some targets (such as ttrace-based HPUX) don't allow us to request
    notification of inferior events such as fork and vork immediately