1 2 /*--------------------------------------------------------------------*/ 3 /*--- Basic definitions and helper functions for DWARF3. ---*/ 4 /*--- priv_d3basics.h ---*/ 5 /*--------------------------------------------------------------------*/ 6 7 /* 8 This file is part of Valgrind, a dynamic binary instrumentation 9 framework. 10 11 Copyright (C) 2008-2013 OpenWorks LLP and others; see below 12 info (at) open-works.co.uk 13 14 This program is free software; you can redistribute it and/or 15 modify it under the terms of the GNU General Public License as 16 published by the Free Software Foundation; either version 2 of the 17 License, or (at your option) any later version. 18 19 This program is distributed in the hope that it will be useful, but 20 WITHOUT ANY WARRANTY; without even the implied warranty of 21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22 General Public License for more details. 23 24 You should have received a copy of the GNU General Public License 25 along with this program; if not, write to the Free Software 26 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 27 02111-1307, USA. 28 29 The GNU General Public License is contained in the file COPYING. 30 31 ------------- 32 33 Some of this code (DWARF3 enumerations) is taken from FSF's 34 gdb-6.6/include/elf/dwarf2.h, which is Copyright (C) 1992 to 2006 35 Free Software Foundation, Inc and is also GPL-2-or-later. 36 */ 37 38 #ifndef __PRIV_D3BASICS_H 39 #define __PRIV_D3BASICS_H 40 41 #include "pub_core_basics.h" // Addr 42 #include "pub_core_debuginfo.h" // DebugInfo 43 44 /* This stuff is taken from gdb-6.6/include/elf/dwarf2.h, which is 45 GPL2+. 46 */ 47 /* Tag names and codes. */ 48 typedef enum 49 { 50 DW_TAG_padding = 0x00, 51 DW_TAG_array_type = 0x01, 52 DW_TAG_class_type = 0x02, 53 DW_TAG_entry_point = 0x03, 54 DW_TAG_enumeration_type = 0x04, 55 DW_TAG_formal_parameter = 0x05, 56 DW_TAG_imported_declaration = 0x08, 57 DW_TAG_label = 0x0a, 58 DW_TAG_lexical_block = 0x0b, 59 DW_TAG_member = 0x0d, 60 DW_TAG_pointer_type = 0x0f, 61 DW_TAG_reference_type = 0x10, 62 DW_TAG_compile_unit = 0x11, 63 DW_TAG_string_type = 0x12, 64 DW_TAG_structure_type = 0x13, 65 DW_TAG_subroutine_type = 0x15, 66 DW_TAG_typedef = 0x16, 67 DW_TAG_union_type = 0x17, 68 DW_TAG_unspecified_parameters = 0x18, 69 DW_TAG_variant = 0x19, 70 DW_TAG_common_block = 0x1a, 71 DW_TAG_common_inclusion = 0x1b, 72 DW_TAG_inheritance = 0x1c, 73 DW_TAG_inlined_subroutine = 0x1d, 74 DW_TAG_module = 0x1e, 75 DW_TAG_ptr_to_member_type = 0x1f, 76 DW_TAG_set_type = 0x20, 77 DW_TAG_subrange_type = 0x21, 78 DW_TAG_with_stmt = 0x22, 79 DW_TAG_access_declaration = 0x23, 80 DW_TAG_base_type = 0x24, 81 DW_TAG_catch_block = 0x25, 82 DW_TAG_const_type = 0x26, 83 DW_TAG_constant = 0x27, 84 DW_TAG_enumerator = 0x28, 85 DW_TAG_file_type = 0x29, 86 DW_TAG_friend = 0x2a, 87 DW_TAG_namelist = 0x2b, 88 DW_TAG_namelist_item = 0x2c, 89 DW_TAG_packed_type = 0x2d, 90 DW_TAG_subprogram = 0x2e, 91 DW_TAG_template_type_param = 0x2f, 92 DW_TAG_template_value_param = 0x30, 93 DW_TAG_thrown_type = 0x31, 94 DW_TAG_try_block = 0x32, 95 DW_TAG_variant_part = 0x33, 96 DW_TAG_variable = 0x34, 97 DW_TAG_volatile_type = 0x35, 98 /* DWARF 3. */ 99 DW_TAG_dwarf_procedure = 0x36, 100 DW_TAG_restrict_type = 0x37, 101 DW_TAG_interface_type = 0x38, 102 DW_TAG_namespace = 0x39, 103 DW_TAG_imported_module = 0x3a, 104 DW_TAG_unspecified_type = 0x3b, 105 DW_TAG_partial_unit = 0x3c, 106 DW_TAG_imported_unit = 0x3d, 107 DW_TAG_condition = 0x3f, 108 DW_TAG_shared_type = 0x40, 109 /* DWARF 4. */ 110 DW_TAG_type_unit = 0x41, 111 DW_TAG_rvalue_reference_type = 0x42, 112 DW_TAG_template_alias = 0x43, 113 /* SGI/MIPS Extensions. */ 114 DW_TAG_MIPS_loop = 0x4081, 115 /* HP extensions. See: ftp://ftp.hp.com/pub/lang/tools/WDB/wdb-4.0.tar.gz . */ 116 DW_TAG_HP_array_descriptor = 0x4090, 117 /* GNU extensions. */ 118 DW_TAG_format_label = 0x4101, /* For FORTRAN 77 and Fortran 90. */ 119 DW_TAG_function_template = 0x4102, /* For C++. */ 120 DW_TAG_class_template = 0x4103, /* For C++. */ 121 DW_TAG_GNU_BINCL = 0x4104, 122 DW_TAG_GNU_EINCL = 0x4105, 123 /* Extensions for UPC. See: http://upc.gwu.edu/~upc. */ 124 DW_TAG_upc_shared_type = 0x8765, 125 DW_TAG_upc_strict_type = 0x8766, 126 DW_TAG_upc_relaxed_type = 0x8767, 127 /* PGI (STMicroelectronics) extensions. No documentation available. */ 128 DW_TAG_PGI_kanji_type = 0xA000, 129 DW_TAG_PGI_interface_block = 0xA020 130 } 131 DW_TAG; 132 133 #define DW_TAG_lo_user 0x4080 134 #define DW_TAG_hi_user 0xffff 135 136 /* Flag that tells whether entry has a child or not. */ 137 typedef enum 138 { 139 DW_children_no = 0, 140 DW_children_yes = 1 141 } 142 DW_children; 143 144 /* Source language names and codes. */ 145 typedef enum dwarf_source_language 146 { 147 DW_LANG_C89 = 0x0001, 148 DW_LANG_C = 0x0002, 149 DW_LANG_Ada83 = 0x0003, 150 DW_LANG_C_plus_plus = 0x0004, 151 DW_LANG_Cobol74 = 0x0005, 152 DW_LANG_Cobol85 = 0x0006, 153 DW_LANG_Fortran77 = 0x0007, 154 DW_LANG_Fortran90 = 0x0008, 155 DW_LANG_Pascal83 = 0x0009, 156 DW_LANG_Modula2 = 0x000a, 157 /* DWARF 3. */ 158 DW_LANG_Java = 0x000b, 159 DW_LANG_C99 = 0x000c, 160 DW_LANG_Ada95 = 0x000d, 161 DW_LANG_Fortran95 = 0x000e, 162 DW_LANG_PLI = 0x000f, 163 DW_LANG_ObjC = 0x0010, 164 DW_LANG_ObjC_plus_plus = 0x0011, 165 DW_LANG_UPC = 0x0012, 166 DW_LANG_D = 0x0013, 167 /* DWARF 4. */ 168 DW_LANG_Python = 0x0014, 169 /* MIPS. */ 170 DW_LANG_Mips_Assembler = 0x8001, 171 /* UPC. */ 172 DW_LANG_Upc = 0x8765 173 } 174 DW_LANG; 175 176 /* Form names and codes. */ 177 typedef enum 178 { 179 DW_FORM_addr = 0x01, 180 DW_FORM_block2 = 0x03, 181 DW_FORM_block4 = 0x04, 182 DW_FORM_data2 = 0x05, 183 DW_FORM_data4 = 0x06, 184 DW_FORM_data8 = 0x07, 185 DW_FORM_string = 0x08, 186 DW_FORM_block = 0x09, 187 DW_FORM_block1 = 0x0a, 188 DW_FORM_data1 = 0x0b, 189 DW_FORM_flag = 0x0c, 190 DW_FORM_sdata = 0x0d, 191 DW_FORM_strp = 0x0e, 192 DW_FORM_udata = 0x0f, 193 DW_FORM_ref_addr = 0x10, 194 DW_FORM_ref1 = 0x11, 195 DW_FORM_ref2 = 0x12, 196 DW_FORM_ref4 = 0x13, 197 DW_FORM_ref8 = 0x14, 198 DW_FORM_ref_udata = 0x15, 199 DW_FORM_indirect = 0x16, 200 /* DWARF 4 values. */ 201 DW_FORM_sec_offset = 0x17, 202 DW_FORM_exprloc = 0x18, 203 DW_FORM_flag_present = 0x19, 204 DW_FORM_ref_sig8 = 0x20, 205 /* Extensions for DWZ multifile. 206 See http://www.dwarfstd.org/ShowIssue.php?issue=120604.1&type=open . */ 207 DW_FORM_GNU_ref_alt = 0x1f20, 208 DW_FORM_GNU_strp_alt = 0x1f21 209 } 210 DW_FORM; 211 212 /* Attribute names and codes. */ 213 typedef enum 214 { 215 DW_AT_sibling = 0x01, 216 DW_AT_location = 0x02, 217 DW_AT_name = 0x03, 218 DW_AT_ordering = 0x09, 219 DW_AT_subscr_data = 0x0a, 220 DW_AT_byte_size = 0x0b, 221 DW_AT_bit_offset = 0x0c, 222 DW_AT_bit_size = 0x0d, 223 DW_AT_element_list = 0x0f, 224 DW_AT_stmt_list = 0x10, 225 DW_AT_low_pc = 0x11, 226 DW_AT_high_pc = 0x12, 227 DW_AT_language = 0x13, 228 DW_AT_member = 0x14, 229 DW_AT_discr = 0x15, 230 DW_AT_discr_value = 0x16, 231 DW_AT_visibility = 0x17, 232 DW_AT_import = 0x18, 233 DW_AT_string_length = 0x19, 234 DW_AT_common_reference = 0x1a, 235 DW_AT_comp_dir = 0x1b, 236 DW_AT_const_value = 0x1c, 237 DW_AT_containing_type = 0x1d, 238 DW_AT_default_value = 0x1e, 239 DW_AT_inline = 0x20, 240 DW_AT_is_optional = 0x21, 241 DW_AT_lower_bound = 0x22, 242 DW_AT_producer = 0x25, 243 DW_AT_prototyped = 0x27, 244 DW_AT_return_addr = 0x2a, 245 DW_AT_start_scope = 0x2c, 246 DW_AT_stride_size = 0x2e, 247 DW_AT_upper_bound = 0x2f, 248 DW_AT_abstract_origin = 0x31, 249 DW_AT_accessibility = 0x32, 250 DW_AT_address_class = 0x33, 251 DW_AT_artificial = 0x34, 252 DW_AT_base_types = 0x35, 253 DW_AT_calling_convention = 0x36, 254 DW_AT_count = 0x37, 255 DW_AT_data_member_location = 0x38, 256 DW_AT_decl_column = 0x39, 257 DW_AT_decl_file = 0x3a, 258 DW_AT_decl_line = 0x3b, 259 DW_AT_declaration = 0x3c, 260 DW_AT_discr_list = 0x3d, 261 DW_AT_encoding = 0x3e, 262 DW_AT_external = 0x3f, 263 DW_AT_frame_base = 0x40, 264 DW_AT_friend = 0x41, 265 DW_AT_identifier_case = 0x42, 266 DW_AT_macro_info = 0x43, 267 DW_AT_namelist_items = 0x44, 268 DW_AT_priority = 0x45, 269 DW_AT_segment = 0x46, 270 DW_AT_specification = 0x47, 271 DW_AT_static_link = 0x48, 272 DW_AT_type = 0x49, 273 DW_AT_use_location = 0x4a, 274 DW_AT_variable_parameter = 0x4b, 275 DW_AT_virtuality = 0x4c, 276 DW_AT_vtable_elem_location = 0x4d, 277 /* DWARF 3 values. */ 278 DW_AT_allocated = 0x4e, 279 DW_AT_associated = 0x4f, 280 DW_AT_data_location = 0x50, 281 DW_AT_stride = 0x51, 282 DW_AT_entry_pc = 0x52, 283 DW_AT_use_UTF8 = 0x53, 284 DW_AT_extension = 0x54, 285 DW_AT_ranges = 0x55, 286 DW_AT_trampoline = 0x56, 287 DW_AT_call_column = 0x57, 288 DW_AT_call_file = 0x58, 289 DW_AT_call_line = 0x59, 290 DW_AT_description = 0x5a, 291 DW_AT_binary_scale = 0x5b, 292 DW_AT_decimal_scale = 0x5c, 293 DW_AT_small = 0x5d, 294 DW_AT_decimal_sign = 0x5e, 295 DW_AT_digit_count = 0x5f, 296 DW_AT_picture_string = 0x60, 297 DW_AT_mutable = 0x61, 298 DW_AT_threads_scaled = 0x62, 299 DW_AT_explicit = 0x63, 300 DW_AT_object_pointer = 0x64, 301 DW_AT_endianity = 0x65, 302 DW_AT_elemental = 0x66, 303 DW_AT_pure = 0x67, 304 DW_AT_recursive = 0x68, 305 /* DWARF 4 values. */ 306 DW_AT_signature = 0x69, 307 DW_AT_main_subprogram = 0x6a, 308 DW_AT_data_bit_offset = 0x6b, 309 DW_AT_const_expr = 0x6c, 310 DW_AT_enum_class = 0x6d, 311 DW_AT_linkage_name = 0x6e, 312 /* SGI/MIPS extensions. */ 313 DW_AT_MIPS_fde = 0x2001, 314 DW_AT_MIPS_loop_begin = 0x2002, 315 DW_AT_MIPS_tail_loop_begin = 0x2003, 316 DW_AT_MIPS_epilog_begin = 0x2004, 317 DW_AT_MIPS_loop_unroll_factor = 0x2005, 318 DW_AT_MIPS_software_pipeline_depth = 0x2006, 319 DW_AT_MIPS_linkage_name = 0x2007, 320 DW_AT_MIPS_stride = 0x2008, 321 DW_AT_MIPS_abstract_name = 0x2009, 322 DW_AT_MIPS_clone_origin = 0x200a, 323 DW_AT_MIPS_has_inlines = 0x200b, 324 /* HP extensions. */ 325 DW_AT_HP_block_index = 0x2000, 326 DW_AT_HP_unmodifiable = 0x2001, /* Same as DW_AT_MIPS_fde. */ 327 DW_AT_HP_actuals_stmt_list = 0x2010, 328 DW_AT_HP_proc_per_section = 0x2011, 329 DW_AT_HP_raw_data_ptr = 0x2012, 330 DW_AT_HP_pass_by_reference = 0x2013, 331 DW_AT_HP_opt_level = 0x2014, 332 DW_AT_HP_prof_version_id = 0x2015, 333 DW_AT_HP_opt_flags = 0x2016, 334 DW_AT_HP_cold_region_low_pc = 0x2017, 335 DW_AT_HP_cold_region_high_pc = 0x2018, 336 DW_AT_HP_all_variables_modifiable = 0x2019, 337 DW_AT_HP_linkage_name = 0x201a, 338 DW_AT_HP_prof_flags = 0x201b, /* In comp unit of procs_info for -g. */ 339 /* GNU extensions. */ 340 DW_AT_sf_names = 0x2101, 341 DW_AT_src_info = 0x2102, 342 DW_AT_mac_info = 0x2103, 343 DW_AT_src_coords = 0x2104, 344 DW_AT_body_begin = 0x2105, 345 DW_AT_body_end = 0x2106, 346 DW_AT_GNU_vector = 0x2107, 347 /* VMS extensions. */ 348 DW_AT_VMS_rtnbeg_pd_address = 0x2201, 349 /* UPC extension. */ 350 DW_AT_upc_threads_scaled = 0x3210, 351 /* PGI (STMicroelectronics) extensions. */ 352 DW_AT_PGI_lbase = 0x3a00, 353 DW_AT_PGI_soffset = 0x3a01, 354 DW_AT_PGI_lstride = 0x3a02 355 } 356 DW_AT; 357 358 #define DW_AT_lo_user 0x2000 /* Implementation-defined range start. */ 359 #define DW_AT_hi_user 0x3ff0 /* Implementation-defined range end. */ 360 361 /* Type encodings. */ 362 typedef enum 363 { 364 DW_ATE_void = 0x0, 365 DW_ATE_address = 0x1, 366 DW_ATE_boolean = 0x2, 367 DW_ATE_complex_float = 0x3, 368 DW_ATE_float = 0x4, 369 DW_ATE_signed = 0x5, 370 DW_ATE_signed_char = 0x6, 371 DW_ATE_unsigned = 0x7, 372 DW_ATE_unsigned_char = 0x8, 373 /* DWARF 3. */ 374 DW_ATE_imaginary_float = 0x9, 375 DW_ATE_packed_decimal = 0xa, 376 DW_ATE_numeric_string = 0xb, 377 DW_ATE_edited = 0xc, 378 DW_ATE_signed_fixed = 0xd, 379 DW_ATE_unsigned_fixed = 0xe, 380 DW_ATE_decimal_float = 0xf, 381 /* DWARF 4. */ 382 DW_ATE_UTF = 0x10, 383 /* HP extensions. */ 384 DW_ATE_HP_float80 = 0x80, /* Floating-point (80 bit). */ 385 DW_ATE_HP_complex_float80 = 0x81, /* Complex floating-point (80 bit). */ 386 DW_ATE_HP_float128 = 0x82, /* Floating-point (128 bit). */ 387 DW_ATE_HP_complex_float128 = 0x83, /* Complex floating-point (128 bit). */ 388 DW_ATE_HP_floathpintel = 0x84, /* Floating-point (82 bit IA64). */ 389 DW_ATE_HP_imaginary_float80 = 0x85, 390 DW_ATE_HP_imaginary_float128 = 0x86 391 } 392 DW_ATE; 393 394 395 /* Expression operations. */ 396 typedef enum 397 { 398 DW_OP_addr = 0x03, 399 DW_OP_deref = 0x06, 400 DW_OP_const1u = 0x08, 401 DW_OP_const1s = 0x09, 402 DW_OP_const2u = 0x0a, 403 DW_OP_const2s = 0x0b, 404 DW_OP_const4u = 0x0c, 405 DW_OP_const4s = 0x0d, 406 DW_OP_const8u = 0x0e, 407 DW_OP_const8s = 0x0f, 408 DW_OP_constu = 0x10, 409 DW_OP_consts = 0x11, 410 DW_OP_dup = 0x12, 411 DW_OP_drop = 0x13, 412 DW_OP_over = 0x14, 413 DW_OP_pick = 0x15, 414 DW_OP_swap = 0x16, 415 DW_OP_rot = 0x17, 416 DW_OP_xderef = 0x18, 417 DW_OP_abs = 0x19, 418 DW_OP_and = 0x1a, 419 DW_OP_div = 0x1b, 420 DW_OP_minus = 0x1c, 421 DW_OP_mod = 0x1d, 422 DW_OP_mul = 0x1e, 423 DW_OP_neg = 0x1f, 424 DW_OP_not = 0x20, 425 DW_OP_or = 0x21, 426 DW_OP_plus = 0x22, 427 DW_OP_plus_uconst = 0x23, 428 DW_OP_shl = 0x24, 429 DW_OP_shr = 0x25, 430 DW_OP_shra = 0x26, 431 DW_OP_xor = 0x27, 432 DW_OP_bra = 0x28, 433 DW_OP_eq = 0x29, 434 DW_OP_ge = 0x2a, 435 DW_OP_gt = 0x2b, 436 DW_OP_le = 0x2c, 437 DW_OP_lt = 0x2d, 438 DW_OP_ne = 0x2e, 439 DW_OP_skip = 0x2f, 440 DW_OP_lit0 = 0x30, 441 DW_OP_lit1 = 0x31, 442 DW_OP_lit2 = 0x32, 443 DW_OP_lit3 = 0x33, 444 DW_OP_lit4 = 0x34, 445 DW_OP_lit5 = 0x35, 446 DW_OP_lit6 = 0x36, 447 DW_OP_lit7 = 0x37, 448 DW_OP_lit8 = 0x38, 449 DW_OP_lit9 = 0x39, 450 DW_OP_lit10 = 0x3a, 451 DW_OP_lit11 = 0x3b, 452 DW_OP_lit12 = 0x3c, 453 DW_OP_lit13 = 0x3d, 454 DW_OP_lit14 = 0x3e, 455 DW_OP_lit15 = 0x3f, 456 DW_OP_lit16 = 0x40, 457 DW_OP_lit17 = 0x41, 458 DW_OP_lit18 = 0x42, 459 DW_OP_lit19 = 0x43, 460 DW_OP_lit20 = 0x44, 461 DW_OP_lit21 = 0x45, 462 DW_OP_lit22 = 0x46, 463 DW_OP_lit23 = 0x47, 464 DW_OP_lit24 = 0x48, 465 DW_OP_lit25 = 0x49, 466 DW_OP_lit26 = 0x4a, 467 DW_OP_lit27 = 0x4b, 468 DW_OP_lit28 = 0x4c, 469 DW_OP_lit29 = 0x4d, 470 DW_OP_lit30 = 0x4e, 471 DW_OP_lit31 = 0x4f, 472 DW_OP_reg0 = 0x50, 473 DW_OP_reg1 = 0x51, 474 DW_OP_reg2 = 0x52, 475 DW_OP_reg3 = 0x53, 476 DW_OP_reg4 = 0x54, 477 DW_OP_reg5 = 0x55, 478 DW_OP_reg6 = 0x56, 479 DW_OP_reg7 = 0x57, 480 DW_OP_reg8 = 0x58, 481 DW_OP_reg9 = 0x59, 482 DW_OP_reg10 = 0x5a, 483 DW_OP_reg11 = 0x5b, 484 DW_OP_reg12 = 0x5c, 485 DW_OP_reg13 = 0x5d, 486 DW_OP_reg14 = 0x5e, 487 DW_OP_reg15 = 0x5f, 488 DW_OP_reg16 = 0x60, 489 DW_OP_reg17 = 0x61, 490 DW_OP_reg18 = 0x62, 491 DW_OP_reg19 = 0x63, 492 DW_OP_reg20 = 0x64, 493 DW_OP_reg21 = 0x65, 494 DW_OP_reg22 = 0x66, 495 DW_OP_reg23 = 0x67, 496 DW_OP_reg24 = 0x68, 497 DW_OP_reg25 = 0x69, 498 DW_OP_reg26 = 0x6a, 499 DW_OP_reg27 = 0x6b, 500 DW_OP_reg28 = 0x6c, 501 DW_OP_reg29 = 0x6d, 502 DW_OP_reg30 = 0x6e, 503 DW_OP_reg31 = 0x6f, 504 DW_OP_breg0 = 0x70, 505 DW_OP_breg1 = 0x71, 506 DW_OP_breg2 = 0x72, 507 DW_OP_breg3 = 0x73, 508 DW_OP_breg4 = 0x74, 509 DW_OP_breg5 = 0x75, 510 DW_OP_breg6 = 0x76, 511 DW_OP_breg7 = 0x77, 512 DW_OP_breg8 = 0x78, 513 DW_OP_breg9 = 0x79, 514 DW_OP_breg10 = 0x7a, 515 DW_OP_breg11 = 0x7b, 516 DW_OP_breg12 = 0x7c, 517 DW_OP_breg13 = 0x7d, 518 DW_OP_breg14 = 0x7e, 519 DW_OP_breg15 = 0x7f, 520 DW_OP_breg16 = 0x80, 521 DW_OP_breg17 = 0x81, 522 DW_OP_breg18 = 0x82, 523 DW_OP_breg19 = 0x83, 524 DW_OP_breg20 = 0x84, 525 DW_OP_breg21 = 0x85, 526 DW_OP_breg22 = 0x86, 527 DW_OP_breg23 = 0x87, 528 DW_OP_breg24 = 0x88, 529 DW_OP_breg25 = 0x89, 530 DW_OP_breg26 = 0x8a, 531 DW_OP_breg27 = 0x8b, 532 DW_OP_breg28 = 0x8c, 533 DW_OP_breg29 = 0x8d, 534 DW_OP_breg30 = 0x8e, 535 DW_OP_breg31 = 0x8f, 536 DW_OP_regx = 0x90, 537 DW_OP_fbreg = 0x91, 538 DW_OP_bregx = 0x92, 539 DW_OP_piece = 0x93, 540 DW_OP_deref_size = 0x94, 541 DW_OP_xderef_size = 0x95, 542 DW_OP_nop = 0x96, 543 /* DWARF 3 extensions. */ 544 DW_OP_push_object_address = 0x97, 545 DW_OP_call2 = 0x98, 546 DW_OP_call4 = 0x99, 547 DW_OP_call_ref = 0x9a, 548 DW_OP_form_tls_address = 0x9b, 549 DW_OP_call_frame_cfa = 0x9c, 550 DW_OP_bit_piece = 0x9d, 551 /* DWARF 4 extensions. */ 552 DW_OP_implicit_value = 0x9e, 553 DW_OP_stack_value = 0x9f, 554 /* GNU extensions. */ 555 DW_OP_GNU_push_tls_address = 0xe0, 556 /* HP extensions. */ 557 DW_OP_HP_unknown = 0xe0, /* Ouch, the same as GNU_push_tls_address. */ 558 DW_OP_HP_is_value = 0xe1, 559 DW_OP_HP_fltconst4 = 0xe2, 560 DW_OP_HP_fltconst8 = 0xe3, 561 DW_OP_HP_mod_range = 0xe4, 562 DW_OP_HP_unmod_range = 0xe5, 563 DW_OP_HP_tls = 0xe6 564 } 565 DW_OP; 566 567 const HChar* ML_(pp_DW_children) ( DW_children hashch ); 568 const HChar* ML_(pp_DW_TAG) ( DW_TAG tag ); 569 const HChar* ML_(pp_DW_FORM) ( DW_FORM form ); 570 const HChar* ML_(pp_DW_AT) ( DW_AT attr ); 571 572 573 /* --- To do with evaluation of Dwarf expressions --- */ 574 575 /* Guarded Dwarf3 expressions, which can be linked together to form a 576 list. The payload field contains a variable length array of bytes 577 which hold the guarded expressions. The length can be inferred by 578 inspecting the payload bytes and so does not need to be stored 579 explicitly. 580 581 Guarded-Expression format is similar but not identical to the 582 DWARF3 location-list format. The format of each returned block is: 583 584 UChar biasMe; 585 UChar isEnd; 586 followed by zero or more of 587 588 (Addr aMin; Addr aMax; UShort nbytes; ..bytes..; UChar isEnd) 589 590 '..bytes..' is an standard DWARF3 location expression which is 591 valid when aMin <= pc <= aMax (possibly after suitable biasing). 592 593 The number of bytes in '..bytes..' is nbytes. 594 595 The end of the sequence is marked by an isEnd == 1 value. All 596 previous isEnd values must be zero. 597 598 biasMe is 1 if the aMin/aMax fields need this DebugInfo's text_bias 599 added before use, and 0 if the GX is this is not necessary (is 600 ready to go). 601 602 Hence the block can be quickly parsed and is self-describing. Note 603 that aMax is 1 less than the corresponding value in a DWARF3 604 location list. Zero length ranges, with aMax == aMin-1, are not 605 allowed. 606 */ 607 typedef 608 struct _GExpr { 609 UChar payload[0]; 610 } 611 GExpr; 612 613 /* Show a so-called guarded expression */ 614 void ML_(pp_GX) ( GExpr* gx ); 615 616 /* Evaluation of a DWARF3 expression (and hence of a GExpr) may 617 require knowing a suitably contextualising set of values for the 618 instruction, frame and stack pointers (and, in general, all 619 registers, though we punt on such generality here). Here's a 620 struct to carry the bare essentials. ip, fp and sp are expected to 621 be provided for all platforms. */ 622 typedef 623 struct { Addr ip; Addr sp; Addr fp; } 624 RegSummary; 625 626 /* This describes the result of evaluating a DWARF3 expression. 627 GXR_Failure: failed; .word is an asciiz string summarising why 628 GXR_Addr: evaluated to an address of the object, in .word 629 GXR_Value: evaluated to a value, in .word 630 GXR_RegNo: evaluated to a DWARF3 register number, in .word 631 */ 632 typedef 633 struct { 634 enum { GXR_Failure, GXR_Addr, GXR_Value, GXR_RegNo } kind; 635 UWord word; 636 } 637 GXResult; 638 639 void ML_(pp_GXResult) ( GXResult res ); 640 641 /* Evaluate a guarded expression. If regs is NULL, then gx is assumed 642 (and checked) to contain just a single guarded expression, with a 643 guard which covers the entire address space and so always evaluates 644 to True (iow, gx is a single unconditional expression). If regs is 645 non-NULL then its .ip value is used to select which of the 646 embedded DWARF3 location expressions to use, and that is duly 647 evaluated. 648 649 If as part of the evaluation, a frame base value needs to be 650 computed, then fbGX can provide an expression for it. If fbGX is 651 NULL but the frame base is still needed, then evaluation of gx as a 652 whole will fail. */ 653 GXResult ML_(evaluate_GX)( GExpr* gx, GExpr* fbGX, 654 RegSummary* regs, const DebugInfo* di ); 655 656 /* This is a subsidiary of ML_(evaluate_GX), which just evaluates a 657 single standard DWARF3 expression. Conventions w.r.t regs and fbGX 658 are as for ML_(evaluate_GX). If push_initial_zero is True, then an 659 initial zero word is pushed on the evaluation stack at the start. 660 This is needed for computing structure field offsets. Note that 661 ML_(evaluate_GX) and ML_(evaluate_Dwarf3_Expr) are mutually 662 recursive. */ 663 GXResult ML_(evaluate_Dwarf3_Expr) ( UChar* expr, UWord exprszB, 664 GExpr* fbGX, RegSummary* regs, 665 const DebugInfo* di, 666 Bool push_initial_zero ); 667 668 /* Evaluate a very simple Guarded (DWARF3) expression. The expression 669 is expected to denote a constant, with no reference to any 670 registers nor to any frame base expression. GXR_Failure is 671 returned if there is more than one guard, or none, a register 672 location is denoted, a frame base expression is required, or the 673 expression is not manifestly a constant. The range of addresses 674 covered by the guard is also ignored. */ 675 GXResult ML_(evaluate_trivial_GX)( GExpr* gx, const DebugInfo* di ); 676 677 /* Compute call frame address (CFA) for IP/SP/FP. */ 678 Addr ML_(get_CFA) ( Addr ip, Addr sp, Addr fp, 679 Addr min_accessible, Addr max_accessible ); 680 681 #endif /* ndef __PRIV_D3BASICS_H */ 682 683 /*--------------------------------------------------------------------*/ 684 /*--- end priv_d3basics.h ---*/ 685 /*--------------------------------------------------------------------*/ 686
