[PATCH 03/40] target_ops/C++: exec target

[Pedro Alves <palves at redhat dot com>]

Straighforward conversion.
---
 gdb/exec.c    | 139 ++++++++++++++++++++++++----------------------------------
 gdb/gdbcore.h |   2 -
 2 files changed, 58 insertions(+), 83 deletions(-)

diff --git a/gdb/exec.c b/gdb/exec.c
index f94c15f1f5..14d0668591 100644
--- a/gdb/exec.c
+++ b/gdb/exec.c
@@ -49,15 +49,43 @@
 
 void (*deprecated_file_changed_hook) (const char *);
 
-/* Prototypes for local functions */
-
-static void exec_files_info (struct target_ops *);
-
-static void init_exec_ops (void);
-
 /* The target vector for executable files.  */
 
-static struct target_ops exec_ops;
+struct exec_target final : public target_ops
+{
+  exec_target ()
+  { to_stratum = file_stratum; }
+
+  const char *shortname () override
+  { return "exec"; }
+
+  const char *longname () override
+  { return _("Local exec file"); }
+
+  const char *doc () override
+  {
+    return _("\
+Use an executable file as a target.\n\
+Specify the filename of the executable file.");
+  }
+
+  void open (const char *, int) override;
+  void close () override;
+  enum target_xfer_status xfer_partial (enum target_object object,
+					const char *annex,
+					gdb_byte *readbuf,
+					const gdb_byte *writebuf,
+					ULONGEST offset, ULONGEST len,
+					ULONGEST *xfered_len) override;
+  struct target_section_table *get_section_table () override;
+  void files_info () override;
+
+  int has_memory () override;
+  char *make_corefile_notes (bfd *, int *) override;
+  int find_memory_regions (find_memory_region_ftype func, void *data) override;
+};
+
+static exec_target exec_ops;
 
 /* Whether to open exec and core files read-only or read-write.  */
 
@@ -71,8 +99,8 @@ show_write_files (struct ui_file *file, int from_tty,
 }
 
 
-static void
-exec_open (const char *args, int from_tty)
+void
+exec_target::open (const char *args, int from_tty)
 {
   target_preopen (from_tty);
   exec_file_attach (args, from_tty);
@@ -105,8 +133,8 @@ exec_close (void)
 /* This is the target_close implementation.  Clears all target
    sections and closes all executable bfds from all program spaces.  */
 
-static void
-exec_close_1 (struct target_ops *self)
+void
+exec_target::close ()
 {
   struct program_space *ss;
   scoped_restore_current_program_space restore_pspace;
@@ -119,17 +147,7 @@ exec_close_1 (struct target_ops *self)
     }
 }
 
-void
-exec_file_clear (int from_tty)
-{
-  /* Remove exec file.  */
-  exec_close ();
-
-  if (from_tty)
-    printf_unfiltered (_("No executable file now.\n"));
-}
-
-/* See exec.h.  */
+/* See gdbcore.h.  */
 
 void
 try_open_exec_file (const char *exec_file_host, struct inferior *inf,
@@ -846,19 +864,19 @@ section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf,
   return TARGET_XFER_EOF;		/* We can't help.  */
 }
 
-static struct target_section_table *
-exec_get_section_table (struct target_ops *ops)
+struct target_section_table *
+exec_target::get_section_table ()
 {
   return current_target_sections;
 }
 
-static enum target_xfer_status
-exec_xfer_partial (struct target_ops *ops, enum target_object object,
-		   const char *annex, gdb_byte *readbuf,
-		   const gdb_byte *writebuf,
-		   ULONGEST offset, ULONGEST len, ULONGEST *xfered_len)
+enum target_xfer_status
+exec_target::xfer_partial (enum target_object object,
+			   const char *annex, gdb_byte *readbuf,
+			   const gdb_byte *writebuf,
+			   ULONGEST offset, ULONGEST len, ULONGEST *xfered_len)
 {
-  struct target_section_table *table = target_get_section_table (ops);
+  struct target_section_table *table = get_section_table ();
 
   if (object == TARGET_OBJECT_MEMORY)
     return section_table_xfer_memory_partial (readbuf, writebuf,
@@ -940,8 +958,8 @@ print_section_info (struct target_section_table *t, bfd *abfd)
     }
 }
 
-static void
-exec_files_info (struct target_ops *t)
+void
+exec_target::files_info ()
 {
   if (exec_bfd)
     print_section_info (current_target_sections, exec_bfd);
@@ -981,7 +999,7 @@ set_section_command (const char *args, int from_tty)
 	  p->addr += offset;
 	  p->endaddr += offset;
 	  if (from_tty)
-	    exec_files_info (&exec_ops);
+	    exec_ops.files_info ();
 	  return;
 	}
     }
@@ -1013,29 +1031,8 @@ exec_set_section_address (const char *filename, int index, CORE_ADDR address)
     }
 }
 
-/* If mourn is being called in all the right places, this could be say
-   `gdb internal error' (since generic_mourn calls
-   breakpoint_init_inferior).  */
-
-static int
-ignore (struct target_ops *ops, struct gdbarch *gdbarch,
-	struct bp_target_info *bp_tgt)
-{
-  return 0;
-}
-
-/* Implement the to_remove_breakpoint method.  */
-
-static int
-exec_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
-			struct bp_target_info *bp_tgt,
-			enum remove_bp_reason reason)
-{
-  return 0;
-}
-
-static int
-exec_has_memory (struct target_ops *ops)
+int
+exec_target::has_memory ()
 {
   /* We can provide memory if we have any file/target sections to read
      from.  */
@@ -1043,34 +1040,16 @@ exec_has_memory (struct target_ops *ops)
 	  != current_target_sections->sections_end);
 }
 
-static char *
-exec_make_note_section (struct target_ops *self, bfd *obfd, int *note_size)
+char *
+exec_target::make_corefile_notes (bfd *obfd, int *note_size)
 {
   error (_("Can't create a corefile"));
 }
 
-/* Fill in the exec file target vector.  Very few entries need to be
-   defined.  */
-
-static void
-init_exec_ops (void)
+int
+exec_target::find_memory_regions (find_memory_region_ftype func, void *data)
 {
-  exec_ops.to_shortname = "exec";
-  exec_ops.to_longname = "Local exec file";
-  exec_ops.to_doc = "Use an executable file as a target.\n\
-Specify the filename of the executable file.";
-  exec_ops.to_open = exec_open;
-  exec_ops.to_close = exec_close_1;
-  exec_ops.to_xfer_partial = exec_xfer_partial;
-  exec_ops.to_get_section_table = exec_get_section_table;
-  exec_ops.to_files_info = exec_files_info;
-  exec_ops.to_insert_breakpoint = ignore;
-  exec_ops.to_remove_breakpoint = exec_remove_breakpoint;
-  exec_ops.to_stratum = file_stratum;
-  exec_ops.to_has_memory = exec_has_memory;
-  exec_ops.to_make_corefile_notes = exec_make_note_section;
-  exec_ops.to_find_memory_regions = objfile_find_memory_regions;
-  exec_ops.to_magic = OPS_MAGIC;
+  return objfile_find_memory_regions (this, func, data);
 }
 
 void
@@ -1078,8 +1057,6 @@ _initialize_exec (void)
 {
   struct cmd_list_element *c;
 
-  init_exec_ops ();
-
   if (!dbx_commands)
     {
       c = add_cmd ("file", class_files, file_command, _("\
diff --git a/gdb/gdbcore.h b/gdb/gdbcore.h
index fef7879e99..5264eef4ee 100644
--- a/gdb/gdbcore.h
+++ b/gdb/gdbcore.h
@@ -153,8 +153,6 @@ extern void exec_file_attach (const char *filename, int from_tty);
 
 extern void exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty);
 
-extern void exec_file_clear (int from_tty);
-
 extern void validate_files (void);
 
 /* The current default bfd target.  */
-- 
2.14.3