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

/* Generic code for supporting multiple C++ ABI's

   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
   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,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   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, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "value.h"
#include "cp-abi.h"
#include "command.h"
#include "gdbcmd.h"
#include "ui-out.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 auto_cp_abi = { "auto", NULL };

#define CP_ABI_MAX 8
static struct cp_abi_ops *cp_abis[CP_ABI_MAX];
static int num_cp_abis = 0;

enum ctor_kinds
is_constructor_name (const char *name)
{
  if ((current_cp_abi.is_constructor_name) == NULL)
    error (_("ABI doesn't define required function is_constructor_name"));
  return (*current_cp_abi.is_constructor_name) (name);
}

enum dtor_kinds
is_destructor_name (const char *name)
{
  if ((current_cp_abi.is_destructor_name) == NULL)
    error (_("ABI doesn't define required function is_destructor_name"));
  return (*current_cp_abi.is_destructor_name) (name);
}

int
is_vtable_name (const char *name)
{
  if ((current_cp_abi.is_vtable_name) == NULL)
    error (_("ABI doesn't define required function is_vtable_name"));
  return (*current_cp_abi.is_vtable_name) (name);
}

int
is_operator_name (const char *name)
{
  if ((current_cp_abi.is_operator_name) == NULL)
    error (_("ABI doesn't define required function is_operator_name"));
  return (*current_cp_abi.is_operator_name) (name);
}

int
baseclass_offset (struct type *type, int index, const gdb_byte *valaddr,
		  LONGEST embedded_offset, CORE_ADDR address,
		  const struct value *val)
{
  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 *
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;
  return (*current_cp_abi.virtual_fn_field) (arg1p, f, j,
					     type, offset);
}

struct type *
value_rtti_type (struct value *v, int *full,
		 LONGEST *top, int *using_enc)
{
  struct type *ret = NULL;

  if ((current_cp_abi.rtti_type) == NULL
      || !HAVE_CPLUS_STRUCT (check_typedef (value_type (v))))
    return NULL;
  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);
}

int
cp_pass_by_reference (struct type *type)
{
  if ((current_cp_abi.pass_by_reference) == NULL)
    return 0;
  return (*current_cp_abi.pass_by_reference) (type);
}

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

static int
switch_to_cp_abi (const char *short_name)
{
  struct cp_abi_ops *abi;

  abi = find_cp_abi (short_name);
  if (abi == NULL)
    return 0;

  current_cp_abi = *abi;
  return 1;
}

/* Add ABI to the list of supported C++ ABI's.  */

int
register_cp_abi (struct cp_abi_ops *abi)
{
  if (num_cp_abis == CP_ABI_MAX)
    internal_error (__FILE__, __LINE__,
		    _("Too many C++ ABIs, please increase "
		      "CP_ABI_MAX in cp-abi.c"));

  cp_abis[num_cp_abis++] = abi;

  return 1;
}

/* Set the ABI to use in "auto" mode to SHORT_NAME.  */

void
set_cp_abi_as_auto_default (const char *short_name)
{
  char *new_longname, *new_doc;
  struct cp_abi_ops *abi = find_cp_abi (short_name);

  if (abi == NULL)
    internal_error (__FILE__, __LINE__,
		    _("Cannot find C++ ABI \"%s\" to set it as auto default."),
		    short_name);

  if (auto_cp_abi.longname != NULL)
    xfree ((char *) auto_cp_abi.longname);
  if (auto_cp_abi.doc != NULL)
    xfree ((char *) auto_cp_abi.doc);

  auto_cp_abi = *abi;

  auto_cp_abi.shortname = "auto";
  new_longname = xstrprintf ("currently \"%s\"", abi->shortname);
  auto_cp_abi.longname = new_longname;

  new_doc = xstrprintf ("Automatically selected; currently \"%s\"",
	     abi->shortname);
  auto_cp_abi.doc = new_doc;

  /* Since we copy the current ABI into current_cp_abi instead of
     using a pointer, if auto is currently the default, we need to
     reset it.  */
  if (strcmp (current_cp_abi.shortname, "auto") == 0)
    switch_to_cp_abi ("auto");
}

/* Return the ABI operations associated with SHORT_NAME.  */

static struct cp_abi_ops *
find_cp_abi (const char *short_name)
{
  int i;

  for (i = 0; i < num_cp_abis; i++)
    if (strcmp (cp_abis[i]->shortname, short_name) == 0)
      return cp_abis[i];

  return NULL;
}

/* Display the list of registered C++ ABIs.  */

static void
list_cp_abis (int from_tty)
{
  struct ui_out *uiout = current_uiout;
  int i;

  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;

      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] = ' ';
      uiout->text (pad);

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

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

static void
set_cp_abi_cmd (const char *args, int from_tty)
{
  if (args == NULL)
    {
      list_cp_abis (from_tty);
      return;
    }

  if (!switch_to_cp_abi (args))
    error (_("Could not find \"%s\" in ABI list"), args);
}

/* A completion function for "set cp-abi".  */

static void
cp_abi_completer (struct cmd_list_element *ignore,
		  completion_tracker &tracker,
		  const char *text, const char *word)
{
  static const char **cp_abi_names;

  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);
}

/* 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)
{
  struct cmd_list_element *c;

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

  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."),
	       &setlist);
  set_cmd_completer (c, cp_abi_completer);

  add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
	   _("Show the ABI used for inspecting C++ objects."),
	   &showlist);
}
Commit	Line	Data
015a42b4	1	/* Generic code for supporting multiple C++ ABI's
06c4d4dc	2
11bc5fe4	3	Copyright (C) 2001-2020 Free Software Foundation, Inc.
015a42b4 JB	4
	5	This file is part of GDB.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
a9762ec7	9	the Free Software Foundation; either version 3 of the License, or
015a42b4 JB	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
a9762ec7	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
015a42b4 JB	19
015a42b4 JB	20	#include "defs.h"
4de283e4	21	#include "value.h"
d55e5aa6	22	#include "cp-abi.h"
4de283e4	23	#include "command.h"
fe1f4a5e DJ	24	#include "gdbcmd.h"
fe1f4a5e DJ	25	#include "ui-out.h"
fe1f4a5e	26	static struct cp_abi_ops find_cp_abi (const char short_name);
015a42b4	27
fe1f4a5e DJ	28	static struct cp_abi_ops current_cp_abi = { "", NULL };
fe1f4a5e DJ	29	static struct cp_abi_ops auto_cp_abi = { "auto", NULL };
015a42b4	30
fe1f4a5e DJ	31	#define CP_ABI_MAX 8
	32	static struct cp_abi_ops *cp_abis[CP_ABI_MAX];
	33	static int num_cp_abis = 0;
015a42b4 JB	34
	35	enum ctor_kinds
	36	is_constructor_name (const char *name)
	37	{
	38	if ((current_cp_abi.is_constructor_name) == NULL)
8a3fe4f8	39	error (_("ABI doesn't define required function is_constructor_name"));
015a42b4 JB	40	return (*current_cp_abi.is_constructor_name) (name);
	41	}
	42
	43	enum dtor_kinds
	44	is_destructor_name (const char *name)
	45	{
	46	if ((current_cp_abi.is_destructor_name) == NULL)
8a3fe4f8	47	error (_("ABI doesn't define required function is_destructor_name"));
015a42b4 JB	48	return (*current_cp_abi.is_destructor_name) (name);
	49	}
	50
	51	int
	52	is_vtable_name (const char *name)
	53	{
	54	if ((current_cp_abi.is_vtable_name) == NULL)
8a3fe4f8	55	error (_("ABI doesn't define required function is_vtable_name"));
015a42b4 JB	56	return (*current_cp_abi.is_vtable_name) (name);
	57	}
	58
	59	int
	60	is_operator_name (const char *name)
	61	{
	62	if ((current_cp_abi.is_operator_name) == NULL)
8a3fe4f8	63	error (_("ABI doesn't define required function is_operator_name"));
015a42b4 JB	64	return (*current_cp_abi.is_operator_name) (name);
	65	}
	66
1514d34e	67	int
8af8e3bc	68	baseclass_offset (struct type type, int index, const gdb_byte valaddr,
6b850546	69	LONGEST embedded_offset, CORE_ADDR address,
8af8e3bc	70	const struct value *val)
1514d34e	71	{
8af8e3bc PA	72	int res = 0;
	73
	74	gdb_assert (current_cp_abi.baseclass_offset != NULL);
	75
a70b8144	76	try
8af8e3bc PA	77	{
	78	res = (*current_cp_abi.baseclass_offset) (type, index, valaddr,
	79	embedded_offset,
	80	address, val);
	81	}
230d2906	82	catch (const gdb_exception_error &ex)
7556d4a4 PA	83	{
7556d4a4 PA	84	if (ex.error != NOT_AVAILABLE_ERROR)
eedc3f4f	85	throw;
7556d4a4 PA	86
	87	throw_error (NOT_AVAILABLE_ERROR,
	88	_("Cannot determine virtual baseclass offset "
	89	"of incomplete object"));
	90	}
8af8e3bc	91
7556d4a4	92	return res;
1514d34e DJ	93	}
1514d34e DJ	94
e933e538	95	struct value *
aff410f1 MS	96	value_virtual_fn_field (struct value **arg1p,
aff410f1 MS	97	struct fn_field *f, int j,
fe1f4a5e	98	struct type *type, int offset)
015a42b4 JB	99	{
	100	if ((current_cp_abi.virtual_fn_field) == NULL)
	101	return NULL;
aff410f1 MS	102	return (*current_cp_abi.virtual_fn_field) (arg1p, f, j,
aff410f1 MS	103	type, offset);
015a42b4	104	}
1514d34e	105
015a42b4	106	struct type *
aff410f1	107	value_rtti_type (struct value v, int full,
6b850546	108	LONGEST top, int using_enc)
015a42b4	109	{
7093c834	110	struct type *ret = NULL;
c5504eaf	111
8ecb59f8 TT	112	if ((current_cp_abi.rtti_type) == NULL
8ecb59f8 TT	113	\|\| !HAVE_CPLUS_STRUCT (check_typedef (value_type (v))))
015a42b4	114	return NULL;
a70b8144	115	try
7093c834 PP	116	{
	117	ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc);
	118	}
230d2906	119	catch (const gdb_exception_error &e)
492d29ea PA	120	{
	121	return NULL;
	122	}
492d29ea	123
7093c834	124	return ret;
015a42b4 JB	125	}
015a42b4 JB	126
0d5de010	127	void
aff410f1 MS	128	cplus_print_method_ptr (const gdb_byte *contents,
aff410f1 MS	129	struct type *type,
0d5de010 DJ	130	struct ui_file *stream)
	131	{
	132	if (current_cp_abi.print_method_ptr == NULL)
	133	error (_("GDB does not support pointers to methods on this target"));
	134	(*current_cp_abi.print_method_ptr) (contents, type, stream);
	135	}
	136
	137	int
ad4820ab	138	cplus_method_ptr_size (struct type *to_type)
0d5de010 DJ	139	{
	140	if (current_cp_abi.method_ptr_size == NULL)
	141	error (_("GDB does not support pointers to methods on this target"));
ad4820ab	142	return (*current_cp_abi.method_ptr_size) (to_type);
0d5de010 DJ	143	}
	144
	145	void
ad4820ab UW	146	cplus_make_method_ptr (struct type type, gdb_byte contents,
ad4820ab UW	147	CORE_ADDR value, int is_virtual)
0d5de010 DJ	148	{
	149	if (current_cp_abi.make_method_ptr == NULL)
	150	error (_("GDB does not support pointers to methods on this target"));
ad4820ab	151	(*current_cp_abi.make_method_ptr) (type, contents, value, is_virtual);
0d5de010 DJ	152	}
0d5de010 DJ	153
b18be20d	154	CORE_ADDR
aff410f1 MS	155	cplus_skip_trampoline (struct frame_info *frame,
aff410f1 MS	156	CORE_ADDR stop_pc)
b18be20d DJ	157	{
	158	if (current_cp_abi.skip_trampoline == NULL)
	159	return 0;
52f729a7	160	return (*current_cp_abi.skip_trampoline) (frame, stop_pc);
b18be20d DJ	161	}
b18be20d DJ	162
0d5de010	163	struct value *
aff410f1 MS	164	cplus_method_ptr_to_value (struct value **this_p,
aff410f1 MS	165	struct value *method_ptr)
0d5de010 DJ	166	{
	167	if (current_cp_abi.method_ptr_to_value == NULL)
	168	error (_("GDB does not support pointers to methods on this target"));
	169	return (*current_cp_abi.method_ptr_to_value) (this_p, method_ptr);
	170	}
	171
c4aeac85 TT	172	/* See cp-abi.h. */
	173
	174	void
	175	cplus_print_vtable (struct value *value)
	176	{
	177	if (current_cp_abi.print_vtable == NULL)
	178	error (_("GDB cannot print the vtable on this target"));
843e694d	179	(*current_cp_abi.print_vtable) (value);
c4aeac85 TT	180	}
c4aeac85 TT	181
6e72ca20 TT	182	/* See cp-abi.h. */
	183
	184	struct value *
	185	cplus_typeid (struct value *value)
	186	{
	187	if (current_cp_abi.get_typeid == NULL)
	188	error (_("GDB cannot find the typeid on this target"));
	189	return (*current_cp_abi.get_typeid) (value);
	190	}
	191
	192	/* See cp-abi.h. */
	193
	194	struct type *
	195	cplus_typeid_type (struct gdbarch *gdbarch)
	196	{
	197	if (current_cp_abi.get_typeid_type == NULL)
	198	error (_("GDB cannot find the type for 'typeid' on this target"));
	199	return (*current_cp_abi.get_typeid_type) (gdbarch);
	200	}
	201
72f1fe8a TT	202	/* See cp-abi.h. */
	203
	204	struct type *
	205	cplus_type_from_type_info (struct value *value)
	206	{
	207	if (current_cp_abi.get_type_from_type_info == NULL)
	208	error (_("GDB cannot find the type from a std::type_info on this target"));
	209	return (*current_cp_abi.get_type_from_type_info) (value);
	210	}
	211
cc16e6c9 TT	212	/* See cp-abi.h. */
cc16e6c9 TT	213
2f408ecb	214	std::string
cc16e6c9 TT	215	cplus_typename_from_type_info (struct value *value)
	216	{
	217	if (current_cp_abi.get_typename_from_type_info == NULL)
	218	error (_("GDB cannot find the type name "
	219	"from a std::type_info on this target"));
	220	return (*current_cp_abi.get_typename_from_type_info) (value);
	221	}
	222
41f1b697 DJ	223	int
	224	cp_pass_by_reference (struct type *type)
	225	{
	226	if ((current_cp_abi.pass_by_reference) == NULL)
	227	return 0;
	228	return (*current_cp_abi.pass_by_reference) (type);
	229	}
	230
fe1f4a5e DJ	231	/* Set the current C++ ABI to SHORT_NAME. */
	232
	233	static int
	234	switch_to_cp_abi (const char *short_name)
	235	{
	236	struct cp_abi_ops *abi;
	237
	238	abi = find_cp_abi (short_name);
	239	if (abi == NULL)
	240	return 0;
	241
	242	current_cp_abi = *abi;
	243	return 1;
	244	}
	245
	246	/* Add ABI to the list of supported C++ ABI's. */
	247
015a42b4	248	int
fe1f4a5e	249	register_cp_abi (struct cp_abi_ops *abi)
015a42b4	250	{
fe1f4a5e DJ	251	if (num_cp_abis == CP_ABI_MAX)
fe1f4a5e DJ	252	internal_error (__FILE__, __LINE__,
3e43a32a MS	253	_("Too many C++ ABIs, please increase "
3e43a32a MS	254	"CP_ABI_MAX in cp-abi.c"));
fe1f4a5e	255
015a42b4 JB	256	cp_abis[num_cp_abis++] = abi;
	257
	258	return 1;
fe1f4a5e DJ	259	}
	260
	261	/* Set the ABI to use in "auto" mode to SHORT_NAME. */
015a42b4	262
fe1f4a5e DJ	263	void
	264	set_cp_abi_as_auto_default (const char *short_name)
	265	{
	266	char new_longname, new_doc;
	267	struct cp_abi_ops *abi = find_cp_abi (short_name);
	268
	269	if (abi == NULL)
	270	internal_error (__FILE__, __LINE__,
e2e0b3e5	271	_("Cannot find C++ ABI \"%s\" to set it as auto default."),
fe1f4a5e DJ	272	short_name);
	273
	274	if (auto_cp_abi.longname != NULL)
	275	xfree ((char *) auto_cp_abi.longname);
	276	if (auto_cp_abi.doc != NULL)
	277	xfree ((char *) auto_cp_abi.doc);
	278
	279	auto_cp_abi = *abi;
	280
	281	auto_cp_abi.shortname = "auto";
0dfdb8ba	282	new_longname = xstrprintf ("currently \"%s\"", abi->shortname);
fe1f4a5e DJ	283	auto_cp_abi.longname = new_longname;
fe1f4a5e DJ	284
0dfdb8ba	285	new_doc = xstrprintf ("Automatically selected; currently \"%s\"",
049742da	286	abi->shortname);
fe1f4a5e DJ	287	auto_cp_abi.doc = new_doc;
	288
	289	/* Since we copy the current ABI into current_cp_abi instead of
	290	using a pointer, if auto is currently the default, we need to
	291	reset it. */
	292	if (strcmp (current_cp_abi.shortname, "auto") == 0)
	293	switch_to_cp_abi ("auto");
015a42b4 JB	294	}
015a42b4 JB	295
fe1f4a5e DJ	296	/* Return the ABI operations associated with SHORT_NAME. */
	297
	298	static struct cp_abi_ops *
	299	find_cp_abi (const char *short_name)
015a42b4 JB	300	{
015a42b4 JB	301	int i;
fe1f4a5e	302
015a42b4	303	for (i = 0; i < num_cp_abis; i++)
fe1f4a5e DJ	304	if (strcmp (cp_abis[i]->shortname, short_name) == 0)
	305	return cp_abis[i];
	306
	307	return NULL;
015a42b4 JB	308	}
015a42b4 JB	309
fe1f4a5e DJ	310	/* Display the list of registered C++ ABIs. */
	311
	312	static void
	313	list_cp_abis (int from_tty)
	314	{
79a45e25	315	struct ui_out *uiout = current_uiout;
fe1f4a5e	316	int i;
fe1f4a5e	317
112e8700	318	uiout->text ("The available C++ ABIs are:\n");
2e783024	319	ui_out_emit_tuple tuple_emitter (uiout, "cp-abi-list");
fe1f4a5e DJ	320	for (i = 0; i < num_cp_abis; i++)
	321	{
	322	char pad[14];
	323	int padcount;
	324
112e8700 SM	325	uiout->text (" ");
112e8700 SM	326	uiout->field_string ("cp-abi", cp_abis[i]->shortname);
fe1f4a5e DJ	327
	328	padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
	329	pad[padcount] = 0;
	330	while (padcount > 0)
	331	pad[--padcount] = ' ';
112e8700	332	uiout->text (pad);
fe1f4a5e	333
112e8700 SM	334	uiout->field_string ("doc", cp_abis[i]->doc);
112e8700 SM	335	uiout->text ("\n");
fe1f4a5e	336	}
fe1f4a5e DJ	337	}
	338
	339	/* Set the current C++ ABI, or display the list of options if no
	340	argument is given. */
	341
	342	static void
4ada038f	343	set_cp_abi_cmd (const char *args, int from_tty)
fe1f4a5e DJ	344	{
	345	if (args == NULL)
	346	{
	347	list_cp_abis (from_tty);
	348	return;
	349	}
	350
	351	if (!switch_to_cp_abi (args))
8a3fe4f8	352	error (_("Could not find \"%s\" in ABI list"), args);
fe1f4a5e DJ	353	}
fe1f4a5e DJ	354
db2b2972 TT	355	/* A completion function for "set cp-abi". */
db2b2972 TT	356
eb3ff9a5	357	static void
db2b2972	358	cp_abi_completer (struct cmd_list_element *ignore,
eb3ff9a5	359	completion_tracker &tracker,
6f937416	360	const char text, const char word)
db2b2972 TT	361	{
	362	static const char **cp_abi_names;
	363
	364	if (cp_abi_names == NULL)
	365	{
	366	int i;
	367
	368	cp_abi_names = XNEWVEC (const char *, num_cp_abis + 1);
	369	for (i = 0; i < num_cp_abis; ++i)
	370	cp_abi_names[i] = cp_abis[i]->shortname;
6108433d	371	cp_abi_names[i] = NULL;
db2b2972 TT	372	}
db2b2972 TT	373
eb3ff9a5	374	complete_on_enum (tracker, cp_abi_names, text, word);
db2b2972 TT	375	}
db2b2972 TT	376
fe1f4a5e DJ	377	/* Show the currently selected C++ ABI. */
	378
	379	static void
4ada038f	380	show_cp_abi_cmd (const char *args, int from_tty)
fe1f4a5e	381	{
79a45e25 PA	382	struct ui_out *uiout = current_uiout;
79a45e25 PA	383
112e8700	384	uiout->text ("The currently selected C++ ABI is \"");
fe1f4a5e	385
112e8700 SM	386	uiout->field_string ("cp-abi", current_cp_abi.shortname);
	387	uiout->text ("\" (");
	388	uiout->field_string ("longname", current_cp_abi.longname);
	389	uiout->text (").\n");
fe1f4a5e DJ	390	}
	391
	392	void
	393	_initialize_cp_abi (void)
	394	{
db2b2972 TT	395	struct cmd_list_element *c;
db2b2972 TT	396
fe1f4a5e DJ	397	register_cp_abi (&auto_cp_abi);
	398	switch_to_cp_abi ("auto");
	399
db2b2972	400	c = add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\
ac74f770 MS	401	Set the ABI used for inspecting C++ objects.\n\
ac74f770 MS	402	\"set cp-abi\" with no arguments will list the available ABIs."),
db2b2972 TT	403	&setlist);
db2b2972 TT	404	set_cmd_completer (c, cp_abi_completer);
fe1f4a5e DJ	405
fe1f4a5e DJ	406	add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
aff410f1 MS	407	_("Show the ABI used for inspecting C++ objects."),
aff410f1 MS	408	&showlist);
fe1f4a5e	409	}