[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);
}

/* 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.  */

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
b811d2c2	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
9d084466 TBA	223	/* See cp-abi.h. */
	224
	225	struct language_pass_by_ref_info
41f1b697 DJ	226	cp_pass_by_reference (struct type *type)
	227	{
	228	if ((current_cp_abi.pass_by_reference) == NULL)
9d084466	229	return default_pass_by_reference (type);
41f1b697 DJ	230	return (*current_cp_abi.pass_by_reference) (type);
	231	}
	232
fe1f4a5e DJ	233	/* Set the current C++ ABI to SHORT_NAME. */
	234
	235	static int
	236	switch_to_cp_abi (const char *short_name)
	237	{
	238	struct cp_abi_ops *abi;
	239
	240	abi = find_cp_abi (short_name);
	241	if (abi == NULL)
	242	return 0;
	243
	244	current_cp_abi = *abi;
	245	return 1;
	246	}
	247
	248	/* Add ABI to the list of supported C++ ABI's. */
	249
015a42b4	250	int
fe1f4a5e	251	register_cp_abi (struct cp_abi_ops *abi)
015a42b4	252	{
fe1f4a5e DJ	253	if (num_cp_abis == CP_ABI_MAX)
fe1f4a5e DJ	254	internal_error (__FILE__, __LINE__,
3e43a32a MS	255	_("Too many C++ ABIs, please increase "
3e43a32a MS	256	"CP_ABI_MAX in cp-abi.c"));
fe1f4a5e	257
015a42b4 JB	258	cp_abis[num_cp_abis++] = abi;
	259
	260	return 1;
fe1f4a5e DJ	261	}
	262
	263	/* Set the ABI to use in "auto" mode to SHORT_NAME. */
015a42b4	264
fe1f4a5e DJ	265	void
	266	set_cp_abi_as_auto_default (const char *short_name)
	267	{
	268	char new_longname, new_doc;
	269	struct cp_abi_ops *abi = find_cp_abi (short_name);
	270
	271	if (abi == NULL)
	272	internal_error (__FILE__, __LINE__,
e2e0b3e5	273	_("Cannot find C++ ABI \"%s\" to set it as auto default."),
fe1f4a5e DJ	274	short_name);
	275
	276	if (auto_cp_abi.longname != NULL)
	277	xfree ((char *) auto_cp_abi.longname);
	278	if (auto_cp_abi.doc != NULL)
	279	xfree ((char *) auto_cp_abi.doc);
	280
	281	auto_cp_abi = *abi;
	282
	283	auto_cp_abi.shortname = "auto";
0dfdb8ba	284	new_longname = xstrprintf ("currently \"%s\"", abi->shortname);
fe1f4a5e DJ	285	auto_cp_abi.longname = new_longname;
fe1f4a5e DJ	286
0dfdb8ba	287	new_doc = xstrprintf ("Automatically selected; currently \"%s\"",
049742da	288	abi->shortname);
fe1f4a5e DJ	289	auto_cp_abi.doc = new_doc;
	290
	291	/* Since we copy the current ABI into current_cp_abi instead of
	292	using a pointer, if auto is currently the default, we need to
	293	reset it. */
	294	if (strcmp (current_cp_abi.shortname, "auto") == 0)
	295	switch_to_cp_abi ("auto");
015a42b4 JB	296	}
015a42b4 JB	297
fe1f4a5e DJ	298	/* Return the ABI operations associated with SHORT_NAME. */
	299
	300	static struct cp_abi_ops *
	301	find_cp_abi (const char *short_name)
015a42b4 JB	302	{
015a42b4 JB	303	int i;
fe1f4a5e	304
015a42b4	305	for (i = 0; i < num_cp_abis; i++)
fe1f4a5e DJ	306	if (strcmp (cp_abis[i]->shortname, short_name) == 0)
	307	return cp_abis[i];
	308
	309	return NULL;
015a42b4 JB	310	}
015a42b4 JB	311
fe1f4a5e DJ	312	/* Display the list of registered C++ ABIs. */
	313
	314	static void
	315	list_cp_abis (int from_tty)
	316	{
79a45e25	317	struct ui_out *uiout = current_uiout;
fe1f4a5e	318	int i;
fe1f4a5e	319
112e8700	320	uiout->text ("The available C++ ABIs are:\n");
2e783024	321	ui_out_emit_tuple tuple_emitter (uiout, "cp-abi-list");
fe1f4a5e DJ	322	for (i = 0; i < num_cp_abis; i++)
	323	{
	324	char pad[14];
	325	int padcount;
	326
112e8700 SM	327	uiout->text (" ");
112e8700 SM	328	uiout->field_string ("cp-abi", cp_abis[i]->shortname);
fe1f4a5e DJ	329
	330	padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
	331	pad[padcount] = 0;
	332	while (padcount > 0)
	333	pad[--padcount] = ' ';
112e8700	334	uiout->text (pad);
fe1f4a5e	335
112e8700 SM	336	uiout->field_string ("doc", cp_abis[i]->doc);
112e8700 SM	337	uiout->text ("\n");
fe1f4a5e	338	}
fe1f4a5e DJ	339	}
	340
	341	/* Set the current C++ ABI, or display the list of options if no
	342	argument is given. */
	343
	344	static void
4ada038f	345	set_cp_abi_cmd (const char *args, int from_tty)
fe1f4a5e DJ	346	{
	347	if (args == NULL)
	348	{
	349	list_cp_abis (from_tty);
	350	return;
	351	}
	352
	353	if (!switch_to_cp_abi (args))
8a3fe4f8	354	error (_("Could not find \"%s\" in ABI list"), args);
fe1f4a5e DJ	355	}
fe1f4a5e DJ	356
db2b2972 TT	357	/* A completion function for "set cp-abi". */
db2b2972 TT	358
eb3ff9a5	359	static void
db2b2972	360	cp_abi_completer (struct cmd_list_element *ignore,
eb3ff9a5	361	completion_tracker &tracker,
6f937416	362	const char text, const char word)
db2b2972 TT	363	{
	364	static const char **cp_abi_names;
	365
	366	if (cp_abi_names == NULL)
	367	{
	368	int i;
	369
	370	cp_abi_names = XNEWVEC (const char *, num_cp_abis + 1);
	371	for (i = 0; i < num_cp_abis; ++i)
	372	cp_abi_names[i] = cp_abis[i]->shortname;
6108433d	373	cp_abi_names[i] = NULL;
db2b2972 TT	374	}
db2b2972 TT	375
eb3ff9a5	376	complete_on_enum (tracker, cp_abi_names, text, word);
db2b2972 TT	377	}
db2b2972 TT	378
fe1f4a5e DJ	379	/* Show the currently selected C++ ABI. */
	380
	381	static void
4ada038f	382	show_cp_abi_cmd (const char *args, int from_tty)
fe1f4a5e	383	{
79a45e25 PA	384	struct ui_out *uiout = current_uiout;
79a45e25 PA	385
112e8700	386	uiout->text ("The currently selected C++ ABI is \"");
fe1f4a5e	387
112e8700 SM	388	uiout->field_string ("cp-abi", current_cp_abi.shortname);
	389	uiout->text ("\" (");
	390	uiout->field_string ("longname", current_cp_abi.longname);
	391	uiout->text (").\n");
fe1f4a5e DJ	392	}
	393
	394	void
	395	_initialize_cp_abi (void)
	396	{
db2b2972 TT	397	struct cmd_list_element *c;
db2b2972 TT	398
fe1f4a5e DJ	399	register_cp_abi (&auto_cp_abi);
	400	switch_to_cp_abi ("auto");
	401
db2b2972	402	c = add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\
ac74f770 MS	403	Set the ABI used for inspecting C++ objects.\n\
ac74f770 MS	404	\"set cp-abi\" with no arguments will list the available ABIs."),
db2b2972 TT	405	&setlist);
db2b2972 TT	406	set_cmd_completer (c, cp_abi_completer);
fe1f4a5e DJ	407
fe1f4a5e DJ	408	add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
aff410f1 MS	409	_("Show the ABI used for inspecting C++ objects."),
aff410f1 MS	410	&showlist);
fe1f4a5e	411	}