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

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

   Copyright (C) 2001-2013 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 "exceptions.h"
#include "gdbcmd.h"
#include "ui-out.h"
#include "gdb_assert.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 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,
		  int embedded_offset, CORE_ADDR address,
		  const struct value *val)
{
  volatile struct gdb_exception ex;
  int res = 0;

  gdb_assert (current_cp_abi.baseclass_offset != NULL);

  TRY_CATCH (ex, RETURN_MASK_ERROR)
    {
      res = (*current_cp_abi.baseclass_offset) (type, index, valaddr,
						embedded_offset,
						address, val);
    }

  if (ex.reason < 0 && ex.error == NOT_AVAILABLE_ERROR)
    throw_error (NOT_AVAILABLE_ERROR,
		 _("Cannot determine virtual baseclass offset "
		   "of incomplete object"));
  else if (ex.reason < 0)
    throw_exception (ex);
  else
    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,
		 int *top, int *using_enc)
{
  struct type *ret = NULL;
  volatile struct gdb_exception e;

  if ((current_cp_abi.rtti_type) == NULL)
    return NULL;
  TRY_CATCH (e, RETURN_MASK_ERROR)
    {
      ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc);
    }
  if (e.reason < 0)
    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.  */

char *
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;
  struct cleanup *cleanup_chain;
  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");
  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);

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

      ui_out_field_string (uiout, "doc", cp_abis[i]->doc);
      ui_out_text (uiout, "\n");
    }
  do_cleanups (cleanup_chain);
}

/* 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)
{
  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 VEC (char_ptr) *
cp_abi_completer (struct cmd_list_element *ignore,
		  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;
    }

  return complete_on_enum (cp_abi_names, text, word);
}

/* Show the currently selected C++ ABI.  */

static void
show_cp_abi_cmd (char *args, int from_tty)
{
  struct ui_out *uiout = current_uiout;

  ui_out_text (uiout, "The currently selected C++ ABI is \"");

  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");
}

extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */

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
28e7fd62	3	Copyright (C) 2001-2013 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
	20	#include "defs.h"
	21	#include "value.h"
	22	#include "cp-abi.h"
fe1f4a5e	23	#include "command.h"
7093c834	24	#include "exceptions.h"
fe1f4a5e DJ	25	#include "gdbcmd.h"
fe1f4a5e DJ	26	#include "ui-out.h"
8af8e3bc	27	#include "gdb_assert.h"
309367d4	28	#include "gdb_string.h"
015a42b4	29
fe1f4a5e	30	static struct cp_abi_ops find_cp_abi (const char short_name);
015a42b4	31
fe1f4a5e DJ	32	static struct cp_abi_ops current_cp_abi = { "", NULL };
fe1f4a5e DJ	33	static struct cp_abi_ops auto_cp_abi = { "auto", NULL };
015a42b4	34
fe1f4a5e DJ	35	#define CP_ABI_MAX 8
	36	static struct cp_abi_ops *cp_abis[CP_ABI_MAX];
	37	static int num_cp_abis = 0;
015a42b4 JB	38
	39	enum ctor_kinds
	40	is_constructor_name (const char *name)
	41	{
	42	if ((current_cp_abi.is_constructor_name) == NULL)
8a3fe4f8	43	error (_("ABI doesn't define required function is_constructor_name"));
015a42b4 JB	44	return (*current_cp_abi.is_constructor_name) (name);
	45	}
	46
	47	enum dtor_kinds
	48	is_destructor_name (const char *name)
	49	{
	50	if ((current_cp_abi.is_destructor_name) == NULL)
8a3fe4f8	51	error (_("ABI doesn't define required function is_destructor_name"));
015a42b4 JB	52	return (*current_cp_abi.is_destructor_name) (name);
	53	}
	54
	55	int
	56	is_vtable_name (const char *name)
	57	{
	58	if ((current_cp_abi.is_vtable_name) == NULL)
8a3fe4f8	59	error (_("ABI doesn't define required function is_vtable_name"));
015a42b4 JB	60	return (*current_cp_abi.is_vtable_name) (name);
	61	}
	62
	63	int
	64	is_operator_name (const char *name)
	65	{
	66	if ((current_cp_abi.is_operator_name) == NULL)
8a3fe4f8	67	error (_("ABI doesn't define required function is_operator_name"));
015a42b4 JB	68	return (*current_cp_abi.is_operator_name) (name);
	69	}
	70
1514d34e	71	int
8af8e3bc PA	72	baseclass_offset (struct type type, int index, const gdb_byte valaddr,
	73	int embedded_offset, CORE_ADDR address,
	74	const struct value *val)
1514d34e	75	{
8af8e3bc PA	76	volatile struct gdb_exception ex;
	77	int res = 0;
	78
	79	gdb_assert (current_cp_abi.baseclass_offset != NULL);
	80
	81	TRY_CATCH (ex, RETURN_MASK_ERROR)
	82	{
	83	res = (*current_cp_abi.baseclass_offset) (type, index, valaddr,
	84	embedded_offset,
	85	address, val);
	86	}
	87
	88	if (ex.reason < 0 && ex.error == NOT_AVAILABLE_ERROR)
	89	throw_error (NOT_AVAILABLE_ERROR,
	90	_("Cannot determine virtual baseclass offset "
	91	"of incomplete object"));
	92	else if (ex.reason < 0)
	93	throw_exception (ex);
	94	else
	95	return res;
1514d34e DJ	96	}
1514d34e DJ	97
e933e538	98	struct value *
aff410f1 MS	99	value_virtual_fn_field (struct value **arg1p,
aff410f1 MS	100	struct fn_field *f, int j,
fe1f4a5e	101	struct type *type, int offset)
015a42b4 JB	102	{
	103	if ((current_cp_abi.virtual_fn_field) == NULL)
	104	return NULL;
aff410f1 MS	105	return (*current_cp_abi.virtual_fn_field) (arg1p, f, j,
aff410f1 MS	106	type, offset);
015a42b4	107	}
1514d34e	108
015a42b4	109	struct type *
aff410f1 MS	110	value_rtti_type (struct value v, int full,
aff410f1 MS	111	int top, int using_enc)
015a42b4	112	{
7093c834	113	struct type *ret = NULL;
bfd189b1	114	volatile struct gdb_exception e;
c5504eaf	115
015a42b4 JB	116	if ((current_cp_abi.rtti_type) == NULL)
015a42b4 JB	117	return NULL;
7093c834 PP	118	TRY_CATCH (e, RETURN_MASK_ERROR)
	119	{
	120	ret = (*current_cp_abi.rtti_type) (v, full, top, using_enc);
	121	}
	122	if (e.reason < 0)
	123	return NULL;
	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. */
	213
	214	char *
	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 DJ	316	struct cleanup *cleanup_chain;
fe1f4a5e DJ	317	int i;
fe1f4a5e	318
c5504eaf	319	ui_out_text (uiout, "The available C++ ABIs are:\n");
aff410f1 MS	320	cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout,
aff410f1 MS	321	"cp-abi-list");
fe1f4a5e DJ	322	for (i = 0; i < num_cp_abis; i++)
	323	{
	324	char pad[14];
	325	int padcount;
	326
	327	ui_out_text (uiout, " ");
	328	ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname);
	329
	330	padcount = 16 - 2 - strlen (cp_abis[i]->shortname);
	331	pad[padcount] = 0;
	332	while (padcount > 0)
	333	pad[--padcount] = ' ';
	334	ui_out_text (uiout, pad);
	335
	336	ui_out_field_string (uiout, "doc", cp_abis[i]->doc);
	337	ui_out_text (uiout, "\n");
	338	}
	339	do_cleanups (cleanup_chain);
	340	}
	341
	342	/* Set the current C++ ABI, or display the list of options if no
	343	argument is given. */
	344
	345	static void
	346	set_cp_abi_cmd (char *args, int from_tty)
	347	{
	348	if (args == NULL)
	349	{
	350	list_cp_abis (from_tty);
	351	return;
	352	}
	353
	354	if (!switch_to_cp_abi (args))
8a3fe4f8	355	error (_("Could not find \"%s\" in ABI list"), args);
fe1f4a5e DJ	356	}
fe1f4a5e DJ	357
db2b2972 TT	358	/* A completion function for "set cp-abi". */
	359
	360	static VEC (char_ptr) *
	361	cp_abi_completer (struct cmd_list_element *ignore,
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	}
	375
	376	return complete_on_enum (cp_abi_names, text, word);
	377	}
	378
fe1f4a5e DJ	379	/* Show the currently selected C++ ABI. */
	380
	381	static void
	382	show_cp_abi_cmd (char *args, int from_tty)
	383	{
79a45e25 PA	384	struct ui_out *uiout = current_uiout;
79a45e25 PA	385
fe1f4a5e DJ	386	ui_out_text (uiout, "The currently selected C++ ABI is \"");
	387
	388	ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname);
	389	ui_out_text (uiout, "\" (");
	390	ui_out_field_string (uiout, "longname", current_cp_abi.longname);
	391	ui_out_text (uiout, ").\n");
	392	}
	393
b9362cc7 AC	394	extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */
b9362cc7 AC	395
fe1f4a5e DJ	396	void
	397	_initialize_cp_abi (void)
	398	{
db2b2972 TT	399	struct cmd_list_element *c;
db2b2972 TT	400
fe1f4a5e DJ	401	register_cp_abi (&auto_cp_abi);
	402	switch_to_cp_abi ("auto");
	403
db2b2972	404	c = add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, _("\
ac74f770 MS	405	Set the ABI used for inspecting C++ objects.\n\
ac74f770 MS	406	\"set cp-abi\" with no arguments will list the available ABIs."),
db2b2972 TT	407	&setlist);
db2b2972 TT	408	set_cmd_completer (c, cp_abi_completer);
fe1f4a5e DJ	409
fe1f4a5e DJ	410	add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd,
aff410f1 MS	411	_("Show the ABI used for inspecting C++ objects."),
aff410f1 MS	412	&showlist);
fe1f4a5e	413	}