external/bsd/elftoolchain/dist/libdwarf/dwarf_pro_attr.c

   1 /*      $NetBSD: dwarf_pro_attr.c,v 1.2 2014/03/09 16:58:04 christos Exp $      */
   2
   3 /*-
   4  * Copyright (c) 2009 Kai Wang
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include "_libdwarf.h"
  30
  31 __RCSID("$NetBSD: dwarf_pro_attr.c,v 1.2 2014/03/09 16:58:04 christos Exp $");
  32 ELFTC_VCSID("Id: dwarf_pro_attr.c 2074 2011-10-27 03:34:33Z jkoshy ");
  33
  34 Dwarf_P_Attribute
  35 dwarf_add_AT_location_expr(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
  36     Dwarf_P_Expr loc_expr, Dwarf_Error *error)
  37 {
  38         Dwarf_Attribute at;
  39
  40         if (dbg == NULL || die == NULL || loc_expr == NULL) {
  41                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
  42                 return (DW_DLV_BADADDR);
  43         }
  44
  45         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
  46                 return (DW_DLV_BADADDR);
  47
  48         at->at_die = die;
  49         at->at_attrib = attr;
  50         at->at_expr = loc_expr;
  51
  52         if (_dwarf_expr_into_block(loc_expr, error) != DW_DLE_NONE)
  53                 return (DW_DLV_BADADDR);
  54         at->u[0].u64 = loc_expr->pe_length;
  55         at->u[1].u8p = loc_expr->pe_block;
  56         if (loc_expr->pe_length <= UCHAR_MAX)
  57                 at->at_form = DW_FORM_block1;
  58         else if (loc_expr->pe_length <= USHRT_MAX)
  59                 at->at_form = DW_FORM_block2;
  60         else if (loc_expr->pe_length <= UINT_MAX)
  61                 at->at_form = DW_FORM_block4;
  62         else
  63                 at->at_form = DW_FORM_block;
  64
  65         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
  66
  67         return (at);
  68 }
  69
  70 Dwarf_P_Attribute
  71 dwarf_add_AT_name(Dwarf_P_Die die, char *name, Dwarf_Error *error)
  72 {
  73         Dwarf_Attribute at;
  74
  75         if (_dwarf_add_string_attr(die, &at, DW_AT_name, name, error) !=
  76             DW_DLE_NONE)
  77                 return (DW_DLV_BADADDR);
  78
  79         return (at);
  80 }
  81
  82 Dwarf_P_Attribute
  83 dwarf_add_AT_comp_dir(Dwarf_P_Die die, char *dir, Dwarf_Error *error)
  84 {
  85         Dwarf_Attribute at;
  86
  87         if (_dwarf_add_string_attr(die, &at, DW_AT_comp_dir, dir, error) !=
  88             DW_DLE_NONE)
  89                 return (DW_DLV_BADADDR);
  90
  91         return (at);
  92 }
  93
  94 Dwarf_P_Attribute
  95 dwarf_add_AT_producer(Dwarf_P_Die die, char *producer, Dwarf_Error *error)
  96 {
  97         Dwarf_Attribute at;
  98
  99         if (_dwarf_add_string_attr(die, &at, DW_AT_producer, producer, error) !=
 100             DW_DLE_NONE)
 101                 return (DW_DLV_BADADDR);
 102
 103         return (at);
 104 }
 105
 106 Dwarf_P_Attribute
 107 dwarf_add_AT_const_value_signedint(Dwarf_P_Die die, Dwarf_Signed value,
 108     Dwarf_Error *error)
 109 {
 110         Dwarf_Attribute at;
 111         Dwarf_Debug dbg;
 112
 113         dbg = die != NULL ? die->die_dbg : NULL;
 114
 115         if (die == NULL) {
 116                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 117                 return (DW_DLV_BADADDR);
 118         }
 119
 120         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
 121                 return (DW_DLV_BADADDR);
 122
 123         at->at_die = die;
 124         at->at_attrib = DW_AT_const_value;
 125         at->at_form = DW_FORM_sdata;
 126         at->u[0].s64 = value;
 127
 128         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
 129
 130         return (at);
 131 }
 132
 133 Dwarf_P_Attribute
 134 dwarf_add_AT_const_value_unsignedint(Dwarf_P_Die die, Dwarf_Unsigned value,
 135     Dwarf_Error *error)
 136 {
 137         Dwarf_Attribute at;
 138         Dwarf_Debug dbg;
 139
 140         dbg = die != NULL ? die->die_dbg : NULL;
 141
 142         if (die == NULL) {
 143                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 144                 return (DW_DLV_BADADDR);
 145         }
 146
 147         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
 148                 return (DW_DLV_BADADDR);
 149
 150         at->at_die = die;
 151         at->at_attrib = DW_AT_const_value;
 152         at->at_form = DW_FORM_udata;
 153         at->u[0].u64 = value;
 154
 155         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
 156
 157         return (at);
 158 }
 159
 160 Dwarf_P_Attribute
 161 dwarf_add_AT_const_value_string(Dwarf_P_Die die, char *string,
 162     Dwarf_Error *error)
 163 {
 164         Dwarf_Attribute at;
 165
 166         if (_dwarf_add_string_attr(die, &at, DW_AT_const_value, string,
 167             error) != DW_DLE_NONE)
 168                 return (DW_DLV_BADADDR);
 169
 170         return (at);
 171 }
 172
 173 Dwarf_P_Attribute
 174 dwarf_add_AT_targ_address(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 175     Dwarf_Unsigned pc_value, Dwarf_Signed sym_index, Dwarf_Error *error)
 176 {
 177
 178         return (dwarf_add_AT_targ_address_b(dbg, die, attr, pc_value, sym_index,
 179             error));
 180 }
 181
 182 Dwarf_P_Attribute
 183 dwarf_add_AT_targ_address_b(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 184     Dwarf_Unsigned pc_value, Dwarf_Unsigned sym_index, Dwarf_Error *error)
 185 {
 186         Dwarf_Attribute at;
 187
 188         if (dbg == NULL || die == NULL) {
 189                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 190                 return (DW_DLV_BADADDR);
 191         }
 192
 193         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
 194                 return (DW_DLV_BADADDR);
 195
 196         at->at_die = die;
 197         at->at_attrib = attr;
 198         at->at_form = DW_FORM_addr;
 199         at->at_relsym = sym_index;
 200         at->u[0].u64 = pc_value;
 201
 202         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
 203
 204         return (at);
 205 }
 206
 207 Dwarf_P_Attribute
 208 dwarf_add_AT_dataref(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 209     Dwarf_Unsigned pc_value, Dwarf_Unsigned sym_index, Dwarf_Error *error)
 210 {
 211         Dwarf_Attribute at;
 212         int ret;
 213
 214         if (dbg == NULL || die == NULL) {
 215                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 216                 return (DW_DLV_BADADDR);
 217         }
 218
 219         ret = _dwarf_add_AT_dataref(dbg, die, attr, pc_value, sym_index,
 220             NULL, &at, error);
 221         if (ret != DW_DLE_NONE)
 222                 return (DW_DLV_BADADDR);
 223
 224         return (at);
 225
 226 }
 227
 228 Dwarf_P_Attribute
 229 dwarf_add_AT_ref_address(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 230     Dwarf_Unsigned pc_value, Dwarf_Unsigned sym_index, Dwarf_Error *error)
 231 {
 232         Dwarf_Attribute at;
 233
 234         if (dbg == NULL || die == NULL) {
 235                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 236                 return (DW_DLV_BADADDR);
 237         }
 238
 239         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
 240                 return (DW_DLV_BADADDR);
 241
 242         at->at_die = die;
 243         at->at_attrib = attr;
 244         at->at_form = DW_FORM_ref_addr;
 245         at->at_relsym = sym_index;
 246         at->u[0].u64 = pc_value;
 247
 248         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
 249
 250         return (at);
 251 }
 252
 253 Dwarf_P_Attribute
 254 dwarf_add_AT_unsigned_const(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 255     Dwarf_Unsigned value, Dwarf_Error *error)
 256 {
 257         Dwarf_Attribute at;
 258
 259         if (dbg == NULL || die == NULL) {
 260                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 261                 return (DW_DLV_BADADDR);
 262         }
 263
 264         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
 265                 return (DW_DLV_BADADDR);
 266
 267         at->at_die = die;
 268         at->at_attrib = attr;
 269         at->u[0].u64 = value;
 270
 271         if (value <= UCHAR_MAX)
 272                 at->at_form = DW_FORM_data1;
 273         else if (value <= USHRT_MAX)
 274                 at->at_form = DW_FORM_data2;
 275         else if (value <= UINT_MAX)
 276                 at->at_form = DW_FORM_data4;
 277         else
 278                 at->at_form = DW_FORM_data8;
 279
 280         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
 281
 282         return (at);
 283 }
 284
 285 Dwarf_P_Attribute
 286 dwarf_add_AT_signed_const(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 287     Dwarf_Signed value, Dwarf_Error *error)
 288 {
 289         Dwarf_Attribute at;
 290
 291         if (dbg == NULL || die == NULL) {
 292                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 293                 return (DW_DLV_BADADDR);
 294         }
 295
 296         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
 297                 return (DW_DLV_BADADDR);
 298
 299         at->at_die = die;
 300         at->at_attrib = attr;
 301         at->u[0].u64 = value;
 302
 303         if (value >= SCHAR_MIN && value <= SCHAR_MAX)
 304                 at->at_form = DW_FORM_data1;
 305         else if (value >= SHRT_MIN && value <= SHRT_MAX)
 306                 at->at_form = DW_FORM_data2;
 307         else if (value >= INT_MIN && value <= INT_MAX)
 308                 at->at_form = DW_FORM_data4;
 309         else
 310                 at->at_form = DW_FORM_data8;
 311
 312         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
 313
 314         return (at);
 315 }
 316
 317 Dwarf_P_Attribute
 318 dwarf_add_AT_reference(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 319     Dwarf_P_Die ref_die, Dwarf_Error *error)
 320 {
 321         Dwarf_Attribute at;
 322
 323         if (dbg == NULL || die == NULL) {
 324                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 325                 return (DW_DLV_BADADDR);
 326         }
 327
 328         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
 329                 return (DW_DLV_BADADDR);
 330
 331         at->at_die = die;
 332         at->at_attrib = attr;
 333         if (dbg->dbg_offset_size == 4)
 334                 at->at_form = DW_FORM_ref4;
 335         else
 336                 at->at_form = DW_FORM_ref8;
 337
 338         at->at_refdie = ref_die;
 339
 340         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
 341
 342         return (at);
 343 }
 344
 345 Dwarf_P_Attribute
 346 dwarf_add_AT_flag(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 347     Dwarf_Small flag, Dwarf_Error *error)
 348 {
 349         Dwarf_Attribute at;
 350
 351         if (dbg == NULL || die == NULL) {
 352                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 353                 return (DW_DLV_BADADDR);
 354         }
 355
 356         if (_dwarf_attr_alloc(die, &at, error) != DW_DLE_NONE)
 357                 return (DW_DLV_BADADDR);
 358
 359         at->at_die = die;
 360         at->at_attrib = attr;
 361         at->at_form = DW_FORM_flag;
 362         at->u[0].u64 = flag ? 1 : 0;
 363
 364         STAILQ_INSERT_TAIL(&die->die_attr, at, at_next);
 365
 366         return (at);
 367 }
 368
 369 Dwarf_P_Attribute
 370 dwarf_add_AT_string(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 371     char *string, Dwarf_Error *error)
 372 {
 373         Dwarf_Attribute at;
 374
 375         if (dbg == NULL || die == NULL) {
 376                 DWARF_SET_ERROR(dbg, error, DW_DLE_ARGUMENT);
 377                 return (DW_DLV_BADADDR);
 378         }
 379
 380         /* XXX Add DW_FORM_string style string instead? */
 381
 382         if (_dwarf_add_string_attr(die, &at, attr, string, error) !=
 383             DW_DLE_NONE)
 384                 return (DW_DLV_BADADDR);
 385
 386         return (at);
 387 }