1/* Generic code for supporting multiple C++ ABI's 2 Copyright 2001, 2002, 2003 Free Software Foundation, Inc. 3 4 This file is part of GDB. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place - Suite 330, 19 Boston, MA 02111-1307, USA. */ 20 21#include "defs.h" 22#include "value.h" 23#include "cp-abi.h" 24#include "command.h" 25#include "gdbcmd.h" 26#include "ui-out.h" 27 28#include "gdb_string.h" 29 30static struct cp_abi_ops *find_cp_abi (const char *short_name); 31 32static struct cp_abi_ops current_cp_abi = { "", NULL }; 33static struct cp_abi_ops auto_cp_abi = { "auto", NULL }; 34 35#define CP_ABI_MAX 8 36static struct cp_abi_ops *cp_abis[CP_ABI_MAX]; 37static int num_cp_abis = 0; 38 39enum ctor_kinds 40is_constructor_name (const char *name) 41{ 42 if ((current_cp_abi.is_constructor_name) == NULL) 43 error ("ABI doesn't define required function is_constructor_name"); 44 return (*current_cp_abi.is_constructor_name) (name); 45} 46 47enum dtor_kinds 48is_destructor_name (const char *name) 49{ 50 if ((current_cp_abi.is_destructor_name) == NULL) 51 error ("ABI doesn't define required function is_destructor_name"); 52 return (*current_cp_abi.is_destructor_name) (name); 53} 54 55int 56is_vtable_name (const char *name) 57{ 58 if ((current_cp_abi.is_vtable_name) == NULL) 59 error ("ABI doesn't define required function is_vtable_name"); 60 return (*current_cp_abi.is_vtable_name) (name); 61} 62 63int 64is_operator_name (const char *name) 65{ 66 if ((current_cp_abi.is_operator_name) == NULL) 67 error ("ABI doesn't define required function is_operator_name"); 68 return (*current_cp_abi.is_operator_name) (name); 69} 70 71int 72baseclass_offset (struct type *type, int index, char *valaddr, 73 CORE_ADDR address) 74{ 75 if (current_cp_abi.baseclass_offset == NULL) 76 error ("ABI doesn't define required function baseclass_offset"); 77 return (*current_cp_abi.baseclass_offset) (type, index, valaddr, address); 78} 79 80struct value * 81value_virtual_fn_field (struct value **arg1p, struct fn_field *f, int j, 82 struct type *type, int offset) 83{ 84 if ((current_cp_abi.virtual_fn_field) == NULL) 85 return NULL; 86 return (*current_cp_abi.virtual_fn_field) (arg1p, f, j, type, offset); 87} 88 89struct type * 90value_rtti_type (struct value *v, int *full, int *top, int *using_enc) 91{ 92 if ((current_cp_abi.rtti_type) == NULL) 93 return NULL; 94 return (*current_cp_abi.rtti_type) (v, full, top, using_enc); 95} 96 97/* Set the current C++ ABI to SHORT_NAME. */ 98 99static int 100switch_to_cp_abi (const char *short_name) 101{ 102 struct cp_abi_ops *abi; 103 104 abi = find_cp_abi (short_name); 105 if (abi == NULL) 106 return 0; 107 108 current_cp_abi = *abi; 109 return 1; 110} 111 112/* Add ABI to the list of supported C++ ABI's. */ 113 114int 115register_cp_abi (struct cp_abi_ops *abi) 116{ 117 if (num_cp_abis == CP_ABI_MAX) 118 internal_error (__FILE__, __LINE__, 119 "Too many C++ ABIs, please increase CP_ABI_MAX in cp-abi.c"); 120 121 cp_abis[num_cp_abis++] = abi; 122 123 return 1; 124} 125 126/* Set the ABI to use in "auto" mode to SHORT_NAME. */ 127 128void 129set_cp_abi_as_auto_default (const char *short_name) 130{ 131 char *new_longname, *new_doc; 132 struct cp_abi_ops *abi = find_cp_abi (short_name); 133 134 if (abi == NULL) 135 internal_error (__FILE__, __LINE__, 136 "Cannot find C++ ABI \"%s\" to set it as auto default.", 137 short_name); 138 139 if (auto_cp_abi.longname != NULL) 140 xfree ((char *) auto_cp_abi.longname); 141 if (auto_cp_abi.doc != NULL) 142 xfree ((char *) auto_cp_abi.doc); 143 144 auto_cp_abi = *abi; 145 146 auto_cp_abi.shortname = "auto"; 147 new_longname = xmalloc (strlen ("currently ") + 1 + strlen (abi->shortname) 148 + 1 + 1); 149 sprintf (new_longname, "currently \"%s\"", abi->shortname); 150 auto_cp_abi.longname = new_longname; 151 152 new_doc = xmalloc (strlen ("Automatically selected; currently ") 153 + 1 + strlen (abi->shortname) + 1 + 1); 154 sprintf (new_doc, "Automatically selected; currently \"%s\"", abi->shortname); 155 auto_cp_abi.doc = new_doc; 156 157 /* Since we copy the current ABI into current_cp_abi instead of 158 using a pointer, if auto is currently the default, we need to 159 reset it. */ 160 if (strcmp (current_cp_abi.shortname, "auto") == 0) 161 switch_to_cp_abi ("auto"); 162} 163 164/* Return the ABI operations associated with SHORT_NAME. */ 165 166static struct cp_abi_ops * 167find_cp_abi (const char *short_name) 168{ 169 int i; 170 171 for (i = 0; i < num_cp_abis; i++) 172 if (strcmp (cp_abis[i]->shortname, short_name) == 0) 173 return cp_abis[i]; 174 175 return NULL; 176} 177 178/* Display the list of registered C++ ABIs. */ 179 180static void 181list_cp_abis (int from_tty) 182{ 183 struct cleanup *cleanup_chain; 184 int i; 185 ui_out_text (uiout, "The available C++ ABIs are:\n"); 186 187 cleanup_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "cp-abi-list"); 188 for (i = 0; i < num_cp_abis; i++) 189 { 190 char pad[14]; 191 int padcount; 192 193 ui_out_text (uiout, " "); 194 ui_out_field_string (uiout, "cp-abi", cp_abis[i]->shortname); 195 196 padcount = 16 - 2 - strlen (cp_abis[i]->shortname); 197 pad[padcount] = 0; 198 while (padcount > 0) 199 pad[--padcount] = ' '; 200 ui_out_text (uiout, pad); 201 202 ui_out_field_string (uiout, "doc", cp_abis[i]->doc); 203 ui_out_text (uiout, "\n"); 204 } 205 do_cleanups (cleanup_chain); 206} 207 208/* Set the current C++ ABI, or display the list of options if no 209 argument is given. */ 210 211static void 212set_cp_abi_cmd (char *args, int from_tty) 213{ 214 if (args == NULL) 215 { 216 list_cp_abis (from_tty); 217 return; 218 } 219 220 if (!switch_to_cp_abi (args)) 221 error ("Could not find \"%s\" in ABI list", args); 222} 223 224/* Show the currently selected C++ ABI. */ 225 226static void 227show_cp_abi_cmd (char *args, int from_tty) 228{ 229 ui_out_text (uiout, "The currently selected C++ ABI is \""); 230 231 ui_out_field_string (uiout, "cp-abi", current_cp_abi.shortname); 232 ui_out_text (uiout, "\" ("); 233 ui_out_field_string (uiout, "longname", current_cp_abi.longname); 234 ui_out_text (uiout, ").\n"); 235} 236 237extern initialize_file_ftype _initialize_cp_abi; /* -Wmissing-prototypes */ 238 239void 240_initialize_cp_abi (void) 241{ 242 register_cp_abi (&auto_cp_abi); 243 switch_to_cp_abi ("auto"); 244 245 add_cmd ("cp-abi", class_obscure, set_cp_abi_cmd, 246 "Set the ABI used for inspecting C++ objects.\n" 247 "\"set cp-abi\" with no arguments will list the available ABIs.", 248 &setlist); 249 250 add_cmd ("cp-abi", class_obscure, show_cp_abi_cmd, 251 "Show the ABI used for inspecting C++ objects.", &showlist); 252} 253