AArch64: Revert setting of elf class in linker stub.

[deliverable/binutils-gdb.git] / gdb / cp-abi.c

diff --git a/gdb/cp-abi.c b/gdb/cp-abi.c
index f5077856569ea23b2de4d760ec484ebb8dc17ee4..fd967c3096b8df844180316b15f9680e430fe2e0 100644 (file)
--- a/gdb/cp-abi.c
+++ b/gdb/cp-abi.c
@@ -1,12 +1,12 @@
 /* Generic code for supporting multiple C++ ABI's
 
 /* Generic code for supporting multiple C++ ABI's
 

-   Copyright 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2001-2020 Free Software Foundation, Inc.

 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
 
    This file is part of GDB.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by

-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or

    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -15,9 +15,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License

-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #include "defs.h"
 #include "value.h"
 
 #include "defs.h"
 #include "value.h"


@@ -25,9 +23,6 @@
 #include "command.h"
 #include "gdbcmd.h"
 #include "ui-out.h"
 #include "command.h"
 #include "gdbcmd.h"
 #include "ui-out.h"

-
-#include "gdb_string.h"
-

 static struct cp_abi_ops *find_cp_abi (const char *short_name);
 
 static struct cp_abi_ops current_cp_abi = { "", NULL };
 static struct cp_abi_ops *find_cp_abi (const char *short_name);
 
 static struct cp_abi_ops current_cp_abi = { "", NULL };


@@ -70,29 +65,169 @@ is_operator_name (const char *name)
 }
 
 int
 }
 
 int

-baseclass_offset (struct type *type, int index, const bfd_byte *valaddr,
-                 CORE_ADDR address)
+baseclass_offset (struct type *type, int index, const gdb_byte *valaddr,
+                 LONGEST embedded_offset, CORE_ADDR address,
+                 const struct value *val)

 {
 {

-  if (current_cp_abi.baseclass_offset == NULL)
-    error (_("ABI doesn't define required function baseclass_offset"));
-  return (*current_cp_abi.baseclass_offset) (type, index, valaddr, address);
+  int res = 0;
+
+  gdb_assert (current_cp_abi.baseclass_offset != NULL);
+
+  try
+    {
+      res = (*current_cp_abi.baseclass_offset) (type, index, valaddr,
+                                               embedded_offset,
+                                               address, val);
+    }
+  catch (const gdb_exception_error &ex)
+    {
+      if (ex.error != NOT_AVAILABLE_ERROR)
+       throw;
+
+      throw_error (NOT_AVAILABLE_ERROR,
+                  _("Cannot determine virtual baseclass offset "
+                    "of incomplete object"));
+    }
+
+  return res;

 }
 
 struct value *
 }
 
 struct value *

-value_virtual_fn_field (struct value **arg1p, struct fn_field *f, int j,
+value_virtual_fn_field (struct value **arg1p,
+                       struct fn_field *f, int j,

                        struct type *type, int offset)
 {
   if ((current_cp_abi.virtual_fn_field) == NULL)
     return NULL;
                        struct type *type, int offset)
 {
   if ((current_cp_abi.virtual_fn_field) == NULL)
     return NULL;

-  return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, type, offset);
+  return (*current_cp_abi.virtual_fn_field) (arg1p, f, j,
+                                            type, offset);

 }
 
 struct type *
 }
 
 struct type *

-value_rtti_type (struct value *v, int *full, int *top, int *using_enc)
+value_rtti_type (struct value *v, int *full,
+                LONGEST *top, int *using_enc)

 {
 {

-  if ((current_cp_abi.rtti_type) == NULL)
+  struct type *ret = NULL;
+
+  if ((current_cp_abi.rtti_type) == NULL
+      || !HAVE_CPLUS_STRUCT (check_typedef (value_type (v))))

     return NULL;
     return NULL;

-  return (*current_cp_abi.rtti_type) (v, full, top, using_enc);
+  try
+    {
+      ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc);
+    }
+  catch (const gdb_exception_error &e)
+    {
+      return NULL;
+    }
+
+  return ret;
+}
+
+void
+cplus_print_method_ptr (const gdb_byte *contents,
+                       struct type *type,
+                       struct ui_file *stream)
+{
+  if (current_cp_abi.print_method_ptr == NULL)
+    error (_("GDB does not support pointers to methods on this target"));
+  (*current_cp_abi.print_method_ptr) (contents, type, stream);
+}
+
+int
+cplus_method_ptr_size (struct type *to_type)
+{
+  if (current_cp_abi.method_ptr_size == NULL)
+    error (_("GDB does not support pointers to methods on this target"));
+  return (*current_cp_abi.method_ptr_size) (to_type);
+}
+
+void
+cplus_make_method_ptr (struct type *type, gdb_byte *contents,
+                      CORE_ADDR value, int is_virtual)
+{
+  if (current_cp_abi.make_method_ptr == NULL)
+    error (_("GDB does not support pointers to methods on this target"));
+  (*current_cp_abi.make_method_ptr) (type, contents, value, is_virtual);
+}
+
+CORE_ADDR
+cplus_skip_trampoline (struct frame_info *frame,
+                      CORE_ADDR stop_pc)
+{
+  if (current_cp_abi.skip_trampoline == NULL)
+    return 0;
+  return (*current_cp_abi.skip_trampoline) (frame, stop_pc);
+}
+
+struct value *
+cplus_method_ptr_to_value (struct value **this_p,
+                          struct value *method_ptr)
+{
+  if (current_cp_abi.method_ptr_to_value == NULL)
+    error (_("GDB does not support pointers to methods on this target"));
+  return (*current_cp_abi.method_ptr_to_value) (this_p, method_ptr);
+}
+
+/* See cp-abi.h.  */
+
+void
+cplus_print_vtable (struct value *value)
+{
+  if (current_cp_abi.print_vtable == NULL)
+    error (_("GDB cannot print the vtable on this target"));
+  (*current_cp_abi.print_vtable) (value);
+}
+
+/* See cp-abi.h.  */
+
+struct value *
+cplus_typeid (struct value *value)
+{
+  if (current_cp_abi.get_typeid == NULL)
+    error (_("GDB cannot find the typeid on this target"));
+  return (*current_cp_abi.get_typeid) (value);
+}
+
+/* See cp-abi.h.  */
+
+struct type *
+cplus_typeid_type (struct gdbarch *gdbarch)
+{
+  if (current_cp_abi.get_typeid_type == NULL)
+    error (_("GDB cannot find the type for 'typeid' on this target"));
+  return (*current_cp_abi.get_typeid_type) (gdbarch);
+}
+
+/* See cp-abi.h.  */
+
+struct type *
+cplus_type_from_type_info (struct value *value)
+{
+  if (current_cp_abi.get_type_from_type_info == NULL)
+    error (_("GDB cannot find the type from a std::type_info on this target"));
+  return (*current_cp_abi.get_type_from_type_info) (value);
+}
+
+/* See cp-abi.h.  */
+
+std::string
+cplus_typename_from_type_info (struct value *value)
+{
+  if (current_cp_abi.get_typename_from_type_info == NULL)
+    error (_("GDB cannot find the type name "
+            "from a std::type_info on this target"));
+  return (*current_cp_abi.get_typename_from_type_info) (value);
+}
+
+/* See cp-abi.h.  */
+
+struct language_pass_by_ref_info
+cp_pass_by_reference (struct type *type)
+{
+  if ((current_cp_abi.pass_by_reference) == NULL)
+    return default_pass_by_reference (type);
+  return (*current_cp_abi.pass_by_reference) (type);

 }
 
 /* Set the current C++ ABI to SHORT_NAME.  */
 }
 
 /* Set the current C++ ABI to SHORT_NAME.  */


@@ -117,7 +252,8 @@ register_cp_abi (struct cp_abi_ops *abi)
 {
   if (num_cp_abis == CP_ABI_MAX)
     internal_error (__FILE__, __LINE__,
 {
   if (num_cp_abis == CP_ABI_MAX)
     internal_error (__FILE__, __LINE__,

-                   _("Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c"));
+                   _("Too many C++ ABIs, please increase "
+                     "CP_ABI_MAX in cp-abi.c"));

 
   cp_abis[num_cp_abis++] = abi;
 
 
   cp_abis[num_cp_abis++] = abi;
 


@@ -145,10 +281,10 @@ set_cp_abi_as_auto_default (const char *short_name)
   auto_cp_abi = *abi;
 
   auto_cp_abi.shortname = "auto";
   auto_cp_abi = *abi;
 
   auto_cp_abi.shortname = "auto";

-  xasprintf (&new_longname, "currently \"%s\"", abi->shortname);
+  new_longname = xstrprintf ("currently \"%s\"", abi->shortname);

   auto_cp_abi.longname = new_longname;
 
   auto_cp_abi.longname = new_longname;
 

-  xasprintf (&new_doc, "Automatically selected; currently \"%s\"",
+  new_doc = xstrprintf ("Automatically selected; currently \"%s\"",

             abi->shortname);
   auto_cp_abi.doc = new_doc;
 
             abi->shortname);
   auto_cp_abi.doc = new_doc;
 


@@ -178,36 +314,35 @@ find_cp_abi (const char *short_name)
 static void
 list_cp_abis (int from_tty)
 {
 static void
 list_cp_abis (int from_tty)
 {

-  struct cleanup *cleanup_chain;
+  struct ui_out *uiout = current_uiout;

   int i;
   int i;

-  ui_out_text (uiout, "The available C++ ABIs are:\n");

 
 

-  cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "cp-abi-list");
+  uiout->text ("The available C++ ABIs are:\n");
+  ui_out_emit_tuple tuple_emitter (uiout, "cp-abi-list");

   for (i = 0; i < num_cp_abis; i++)
     {
       char pad[14];
       int padcount;
 
   for (i = 0; i < num_cp_abis; i++)
     {
       char pad[14];
       int padcount;
 

-      ui_out_text (uiout, "  ");
-      ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname);
+      uiout->text ("  ");
+      uiout->field_string ("cp-abi", cp_abis[i]->shortname);

 
       padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
       pad[padcount] = 0;
       while (padcount > 0)
        pad[--padcount] = ' ';
 
       padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
       pad[padcount] = 0;
       while (padcount > 0)
        pad[--padcount] = ' ';

-      ui_out_text (uiout, pad);
+      uiout->text (pad);

 
 

-      ui_out_field_string (uiout, "doc", cp_abis[i]->doc);
-      ui_out_text (uiout, "\n");
+      uiout->field_string ("doc", cp_abis[i]->doc);
+      uiout->text ("\n");

     }
     }

-  do_cleanups (cleanup_chain);

 }
 
 /* Set the current C++ ABI, or display the list of options if no
    argument is given.  */
 
 static void
 }
 
 /* Set the current C++ ABI, or display the list of options if no
    argument is given.  */
 
 static void

-set_cp_abi_cmd (char *args, int from_tty)
+set_cp_abi_cmd (const char *args, int from_tty)

 {
   if (args == NULL)
     {
 {
   if (args == NULL)
     {


@@ -219,32 +354,58 @@ set_cp_abi_cmd (char *args, int from_tty)
     error (_("Could not find \"%s\" in ABI list"), args);
 }
 
     error (_("Could not find \"%s\" in ABI list"), args);
 }
 

-/* Show the currently selected C++ ABI.  */
+/* A completion function for "set cp-abi".  */

 
 static void
 
 static void

-show_cp_abi_cmd (char *args, int from_tty)
+cp_abi_completer (struct cmd_list_element *ignore,
+                 completion_tracker &tracker,
+                 const char *text, const char *word)

 {
 {

-  ui_out_text (uiout, "The currently selected C++ ABI is \"");
+  static const char **cp_abi_names;

 
 

-  ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname);
-  ui_out_text (uiout, "\" (");
-  ui_out_field_string (uiout, "longname", current_cp_abi.longname);
-  ui_out_text (uiout, ").\n");
+  if (cp_abi_names == NULL)
+    {
+      int i;
+
+      cp_abi_names = XNEWVEC (const char *, num_cp_abis + 1);
+      for (i = 0; i < num_cp_abis; ++i)
+       cp_abi_names[i] = cp_abis[i]->shortname;
+      cp_abi_names[i] = NULL;
+    }
+
+  complete_on_enum (tracker, cp_abi_names, text, word);

 }
 
 }
 

-extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */
+/* Show the currently selected C++ ABI.  */
+
+static void
+show_cp_abi_cmd (const char *args, int from_tty)
+{
+  struct ui_out *uiout = current_uiout;
+
+  uiout->text ("The currently selected C++ ABI is \"");
+
+  uiout->field_string ("cp-abi", current_cp_abi.shortname);
+  uiout->text ("\" (");
+  uiout->field_string ("longname", current_cp_abi.longname);
+  uiout->text (").\n");
+}

 
 void
 _initialize_cp_abi (void)
 {
 
 void
 _initialize_cp_abi (void)
 {

+  struct cmd_list_element *c;
+

   register_cp_abi (&auto_cp_abi);
   switch_to_cp_abi ("auto");
 
   register_cp_abi (&auto_cp_abi);
   switch_to_cp_abi ("auto");
 

-  add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\
+  c = add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\

 Set the ABI used for inspecting C++ objects.\n\
 \"set cp-abi\" with no arguments will list the available ABIs."),
 Set the ABI used for inspecting C++ objects.\n\
 \"set cp-abi\" with no arguments will list the available ABIs."),

-          &setlist);
+              &setlist);
+  set_cmd_completer (c, cp_abi_completer);

 
   add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
 
   add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,

-          _("Show the ABI used for inspecting C++ objects."), &showlist);
+          _("Show the ABI used for inspecting C++ objects."),
+          &showlist);

 }
 }