| 1 | /* <apollo/dst.h> */ |
| 2 | /* Apollo object module DST (debug symbol table) description */ |
| 3 | |
| 4 | #ifndef apollo_dst_h |
| 5 | #define apollo_dst_h |
| 6 | |
| 7 | #if defined(apollo) && !defined(__GNUC__) |
| 8 | #define ALIGNED1 __attribute( (aligned(1)) ) |
| 9 | #else |
| 10 | /* Remove attribute directives from non-Apollo code: */ |
| 11 | #define ALIGNED1 /* nil */ |
| 12 | #endif |
| 13 | |
| 14 | |
| 15 | |
| 16 | /* Identification of this version of the debug symbol table. Producers of the |
| 17 | debug symbol table must write these values into the version number field of |
| 18 | the compilation unit record in .blocks . |
| 19 | */ |
| 20 | #define dst_version_major 1 |
| 21 | #define dst_version_minor 3 |
| 22 | |
| 23 | |
| 24 | /* |
| 25 | ** Enumeration of debug record types appearing in .blocks and .symbols ... |
| 26 | */ |
| 27 | typedef enum |
| 28 | { |
| 29 | dst_typ_pad, /* 0 */ |
| 30 | dst_typ_comp_unit, /* 1 */ |
| 31 | dst_typ_section_tab, /* 2 */ |
| 32 | dst_typ_file_tab, /* 3 */ |
| 33 | dst_typ_block, /* 4 */ |
| 34 | dst_typ_5, |
| 35 | dst_typ_var, |
| 36 | dst_typ_pointer, /* 7 */ |
| 37 | dst_typ_array, /* 8 */ |
| 38 | dst_typ_subrange, /* 9 */ |
| 39 | dst_typ_set, /* 10 */ |
| 40 | dst_typ_implicit_enum, /* 11 */ |
| 41 | dst_typ_explicit_enum, /* 12 */ |
| 42 | dst_typ_short_rec, /* 13 */ |
| 43 | dst_typ_old_record, |
| 44 | dst_typ_short_union, /* 15 */ |
| 45 | dst_typ_old_union, |
| 46 | dst_typ_file, /* 17 */ |
| 47 | dst_typ_offset, /* 18 */ |
| 48 | dst_typ_alias, /* 19 */ |
| 49 | dst_typ_signature, /* 20 */ |
| 50 | dst_typ_21, |
| 51 | dst_typ_old_label, /* 22 */ |
| 52 | dst_typ_scope, /* 23 */ |
| 53 | dst_typ_end_scope, /* 24 */ |
| 54 | dst_typ_25, |
| 55 | dst_typ_26, |
| 56 | dst_typ_string_tab, /* 27 */ |
| 57 | dst_typ_global_name_tab, /* 28 */ |
| 58 | dst_typ_forward, /* 29 */ |
| 59 | dst_typ_aux_size, /* 30 */ |
| 60 | dst_typ_aux_align, /* 31 */ |
| 61 | dst_typ_aux_field_size, /* 32 */ |
| 62 | dst_typ_aux_field_off, /* 33 */ |
| 63 | dst_typ_aux_field_align, /* 34 */ |
| 64 | dst_typ_aux_qual, /* 35 */ |
| 65 | dst_typ_aux_var_bound, /* 36 */ |
| 66 | dst_typ_extension, /* 37 */ |
| 67 | dst_typ_string, /* 38 */ |
| 68 | dst_typ_old_entry, |
| 69 | dst_typ_const, /* 40 */ |
| 70 | dst_typ_reference, /* 41 */ |
| 71 | dst_typ_record, /* 42 */ |
| 72 | dst_typ_union, /* 43 */ |
| 73 | dst_typ_aux_type_deriv, /* 44 */ |
| 74 | dst_typ_locpool, /* 45 */ |
| 75 | dst_typ_variable, /* 46 */ |
| 76 | dst_typ_label, /* 47 */ |
| 77 | dst_typ_entry, /* 48 */ |
| 78 | dst_typ_aux_lifetime, /* 49 */ |
| 79 | dst_typ_aux_ptr_base, /* 50 */ |
| 80 | dst_typ_aux_src_range, /* 51 */ |
| 81 | dst_typ_aux_reg_val, /* 52 */ |
| 82 | dst_typ_aux_unit_names, /* 53 */ |
| 83 | dst_typ_aux_sect_info, /* 54 */ |
| 84 | dst_typ_END_OF_ENUM |
| 85 | } |
| 86 | dst_rec_type_t; |
| 87 | |
| 88 | |
| 89 | /* |
| 90 | ** Dummy bounds for variably dimensioned arrays: |
| 91 | */ |
| 92 | #define dst_dummy_array_size 100 |
| 93 | |
| 94 | |
| 95 | /* |
| 96 | ** Reference to another item in the symbol table. |
| 97 | ** |
| 98 | ** The value of a dst_rel_offset_t is the relative offset from the start of the |
| 99 | ** referencing record to the start of the referenced record, string, etc. |
| 100 | ** |
| 101 | ** The value of a NIL dst_rel_offset_t is zero. |
| 102 | */ |
| 103 | |
| 104 | typedef long dst_rel_offset_t ALIGNED1; |
| 105 | |
| 106 | |
| 107 | /* FIXME: Here and many places we make assumptions about sizes of host |
| 108 | data types, structure layout, etc. Only needs to be fixed if we care |
| 109 | about cross-debugging, though. */ |
| 110 | |
| 111 | /* |
| 112 | ** Section-relative reference. |
| 113 | ** |
| 114 | ** The section index field is an index into the local compilation unit's |
| 115 | ** section table (see dst_rec_section_tab_t)--NOT into the object module |
| 116 | ** section table! |
| 117 | ** |
| 118 | ** The sect_offset field is the offset in bytes into the section. |
| 119 | ** |
| 120 | ** A NIL dst_sect_ref_t has a sect_index field of zero. Indexes originate |
| 121 | ** at one. |
| 122 | */ |
| 123 | |
| 124 | typedef struct |
| 125 | { |
| 126 | unsigned short sect_index; |
| 127 | unsigned long sect_offset ALIGNED1; |
| 128 | } |
| 129 | dst_sect_ref_t; |
| 130 | |
| 131 | #define dst_sect_index_nil 0 |
| 132 | #define dst_sect_index_origin 1 |
| 133 | |
| 134 | |
| 135 | /* |
| 136 | ** Source location descriptor. |
| 137 | ** |
| 138 | ** The file_index field is an index into the local compilation unit's |
| 139 | ** file table (see dst_rec_file_tab_t). |
| 140 | ** |
| 141 | ** A NIL dst_src_loc_t has a file_index field of zero. Indexes originate |
| 142 | ** at one. |
| 143 | */ |
| 144 | |
| 145 | typedef struct |
| 146 | { |
| 147 | boolean reserved:1; /* reserved for future use */ |
| 148 | int file_index:11; /* index into .blocks source file list */ |
| 149 | int line_number:20; /* source line number */ |
| 150 | } |
| 151 | dst_src_loc_t; |
| 152 | |
| 153 | #define dst_file_index_nil 0 |
| 154 | #define dst_file_index_origin 1 |
| 155 | |
| 156 | |
| 157 | /* |
| 158 | ** Standard (primitive) type codes. |
| 159 | */ |
| 160 | |
| 161 | typedef enum |
| 162 | { |
| 163 | dst_non_std_type, |
| 164 | dst_int8_type, /* 8 bit integer */ |
| 165 | dst_int16_type, /* 16 bit integer */ |
| 166 | dst_int32_type, /* 32 bit integer */ |
| 167 | dst_uint8_type, /* 8 bit unsigned integer */ |
| 168 | dst_uint16_type, /* 16 bit unsigned integer */ |
| 169 | dst_uint32_type, /* 32 bit unsigned integer */ |
| 170 | dst_real32_type, /* single precision ieee floatining point */ |
| 171 | dst_real64_type, /* double precision ieee floatining point */ |
| 172 | dst_complex_type, /* single precision complex */ |
| 173 | dst_dcomplex_type, /* double precision complex */ |
| 174 | dst_bool8_type, /* boolean =logical*1 */ |
| 175 | dst_bool16_type, /* boolean =logical*2 */ |
| 176 | dst_bool32_type, /* boolean =logical*4 */ |
| 177 | dst_char_type, /* 8 bit ascii character */ |
| 178 | dst_string_type, /* string of 8 bit ascii characters */ |
| 179 | dst_ptr_type, /* univ_pointer */ |
| 180 | dst_set_type, /* generic 256 bit set */ |
| 181 | dst_proc_type, /* generic procedure (signature not specified) */ |
| 182 | dst_func_type, /* generic function (signature not specified) */ |
| 183 | dst_void_type, /* c void type */ |
| 184 | dst_uchar_type, /* c unsigned char */ |
| 185 | dst_std_type_END_OF_ENUM |
| 186 | } |
| 187 | dst_std_type_t; |
| 188 | |
| 189 | |
| 190 | /* |
| 191 | ** General data type descriptor |
| 192 | ** |
| 193 | ** If the user_defined_type bit is clear, then the type is a standard type, and |
| 194 | ** the remaining bits contain the dst_std_type_t of the type. If the bit is |
| 195 | ** set, then the type is defined in a separate dst record, which is referenced |
| 196 | ** by the remaining bits as a dst_rel_offset_t. |
| 197 | */ |
| 198 | |
| 199 | typedef union |
| 200 | { |
| 201 | struct |
| 202 | { |
| 203 | boolean user_defined_type:1; /* tag field */ |
| 204 | int must_be_zero:23; /* 23 bits of pad */ |
| 205 | dst_std_type_t dtc:8; /* 8 bit primitive data */ |
| 206 | } |
| 207 | std_type; |
| 208 | |
| 209 | struct |
| 210 | { |
| 211 | boolean user_defined_type:1; /* tag field */ |
| 212 | int doffset:31; /* offset to type record */ |
| 213 | } |
| 214 | user_type; |
| 215 | } |
| 216 | dst_type_t ALIGNED1; |
| 217 | |
| 218 | /* The user_type.doffset field is a 31-bit signed value. Some versions of C |
| 219 | do not support signed bit fields. The following macro will extract that |
| 220 | field as a signed value: |
| 221 | */ |
| 222 | #define dst_user_type_offset(type_rec) \ |
| 223 | ( ((int) ((type_rec).user_type.doffset << 1)) >> 1 ) |
| 224 | |
| 225 | |
| 226 | /*================================================*/ |
| 227 | /*========== RECORDS IN .blocks SECTION ==========*/ |
| 228 | /*================================================*/ |
| 229 | |
| 230 | /*----------------------- |
| 231 | COMPILATION UNIT record |
| 232 | ----------------------- |
| 233 | This must be the first record in each .blocks section. |
| 234 | Provides a set of information describing the output of a single compilation |
| 235 | and pointers to additional information for the compilation unit. |
| 236 | */ |
| 237 | |
| 238 | typedef enum |
| 239 | { |
| 240 | dst_pc_code_locs, /* ranges in loc strings are pc ranges */ |
| 241 | dst_comp_unit_END_OF_ENUM |
| 242 | } |
| 243 | dst_comp_unit_flag_t; |
| 244 | |
| 245 | typedef enum |
| 246 | { |
| 247 | dst_lang_unk, /* unknown language */ |
| 248 | dst_lang_pas, /* Pascal */ |
| 249 | dst_lang_ftn, /* FORTRAN */ |
| 250 | dst_lang_c, /* C */ |
| 251 | dst_lang_mod2, /* Modula-2 */ |
| 252 | dst_lang_asm_m68k, /* 68K assembly language */ |
| 253 | dst_lang_asm_a88k, /* AT assembly language */ |
| 254 | dst_lang_ada, /* Ada */ |
| 255 | dst_lang_cxx, /* C++ */ |
| 256 | dst_lang_END_OF_ENUM |
| 257 | } |
| 258 | dst_lang_type_t; |
| 259 | |
| 260 | typedef struct |
| 261 | { |
| 262 | struct |
| 263 | { |
| 264 | unsigned char major_part; /* = dst_version_major */ |
| 265 | unsigned char minor_part; /* = dst_version_minor */ |
| 266 | } |
| 267 | version; /* version of dst */ |
| 268 | unsigned short flags; /* mask of dst_comp_unit_flag_t */ |
| 269 | unsigned short lang_type; /* source language */ |
| 270 | unsigned short number_of_blocks; /* number of blocks records */ |
| 271 | dst_rel_offset_t root_block_offset; /* offset to root block (module?) */ |
| 272 | dst_rel_offset_t section_table /* offset to section table record */ ; |
| 273 | dst_rel_offset_t file_table; /* offset to file table record */ |
| 274 | unsigned long data_size; /* total size of .blocks data */ |
| 275 | } |
| 276 | dst_rec_comp_unit_t ALIGNED1; |
| 277 | |
| 278 | |
| 279 | /*-------------------- |
| 280 | SECTION TABLE record |
| 281 | -------------------- |
| 282 | There must be one section table associated with each compilation unit. |
| 283 | Other debug records refer to sections via their index in this table. The |
| 284 | section base addresses in the table are virtual addresses of the sections, |
| 285 | relocated by the linker. |
| 286 | */ |
| 287 | |
| 288 | typedef struct |
| 289 | { |
| 290 | unsigned short number_of_sections; /* size of array: */ |
| 291 | unsigned long section_base[dst_dummy_array_size] ALIGNED1; |
| 292 | } |
| 293 | dst_rec_section_tab_t ALIGNED1; |
| 294 | |
| 295 | |
| 296 | /*----------------- |
| 297 | FILE TABLE record |
| 298 | ----------------- |
| 299 | There must be one file table associated with each compilation unit describing |
| 300 | the source (and include) files used by each compilation unit. Other debug |
| 301 | records refer to files via their index in this table. The first entry is the |
| 302 | primary source file. |
| 303 | */ |
| 304 | |
| 305 | typedef struct |
| 306 | { |
| 307 | long dtm; /* time last modified (time_$clock_t) */ |
| 308 | dst_rel_offset_t noffset; /* offset to name string for source file */ |
| 309 | } |
| 310 | dst_file_desc_t; |
| 311 | |
| 312 | typedef struct |
| 313 | { |
| 314 | unsigned short number_of_files; /* size of array: */ |
| 315 | dst_file_desc_t files[dst_dummy_array_size] ALIGNED1; |
| 316 | } |
| 317 | dst_rec_file_tab_t ALIGNED1; |
| 318 | |
| 319 | |
| 320 | /*----------------- |
| 321 | NAME TABLE record |
| 322 | ----------------- |
| 323 | A name table record may appear as an auxiliary record to the file table, |
| 324 | providing additional qualification of the file indexes for languages that |
| 325 | need it (i.e. Ada). Name table entries parallel file table entries of the |
| 326 | same file index. |
| 327 | */ |
| 328 | |
| 329 | typedef struct |
| 330 | { |
| 331 | unsigned short number_of_names; /* size of array: */ |
| 332 | dst_rel_offset_t names[dst_dummy_array_size] ALIGNED1; |
| 333 | } |
| 334 | dst_rec_name_tab_t ALIGNED1; |
| 335 | |
| 336 | |
| 337 | /*-------------- |
| 338 | BLOCK record |
| 339 | -------------- |
| 340 | Describes a lexical program block--a procedure, function, module, etc. |
| 341 | */ |
| 342 | |
| 343 | /* Block types. These may be used in any way desired by the compiler writers. |
| 344 | The debugger uses them only to give a description to the user of the type of |
| 345 | a block. The debugger makes no other assumptions about the meaning of any |
| 346 | of these. For example, the fact that a block is executable (e.g., program) |
| 347 | or not (e.g., module) is expressed in block attributes (see below), not |
| 348 | guessed at from the block type. |
| 349 | */ |
| 350 | typedef enum |
| 351 | { |
| 352 | dst_block_module, /* some pascal = modula = ada types */ |
| 353 | dst_block_program, |
| 354 | dst_block_procedure, |
| 355 | dst_block_function, /* C function */ |
| 356 | dst_block_subroutine, /* some fortran block types */ |
| 357 | dst_block_block_data, |
| 358 | dst_block_stmt_function, |
| 359 | dst_block_package, /* a few particular to Ada */ |
| 360 | dst_block_package_body, |
| 361 | dst_block_subunit, |
| 362 | dst_block_task, |
| 363 | dst_block_file, /* a C outer scope? */ |
| 364 | dst_block_class, /* C++ or Simula */ |
| 365 | dst_block_END_OF_ENUM |
| 366 | } |
| 367 | dst_block_type_t; |
| 368 | |
| 369 | /* Block attributes. This is the information used by the debugger to represent |
| 370 | the semantics of blocks. |
| 371 | */ |
| 372 | typedef enum |
| 373 | { |
| 374 | dst_block_main_entry, /* the block's entry point is a main entry into |
| 375 | the compilation unit */ |
| 376 | dst_block_executable, /* the block has an entry point */ |
| 377 | dst_block_attr_END_OF_ENUM |
| 378 | } |
| 379 | dst_block_attr_t; |
| 380 | |
| 381 | /* Code range. Each block has associated with it one or more code ranges. An |
| 382 | individual code range is identified by a range of source (possibly nil) and |
| 383 | a range of executable code. For example, a block which has its executable |
| 384 | code spread over multiple sections will have one code range per section. |
| 385 | */ |
| 386 | typedef struct |
| 387 | { |
| 388 | unsigned long code_size; /* size of executable code (in bytes ) */ |
| 389 | dst_sect_ref_t code_start; /* starting address of executable code */ |
| 390 | dst_sect_ref_t lines_start; /* start of line number tables */ |
| 391 | } |
| 392 | dst_code_range_t; |
| 393 | |
| 394 | typedef struct |
| 395 | { |
| 396 | dst_block_type_t block_type:8; |
| 397 | unsigned short flags:8; /* mask of dst_block_attr_t flags */ |
| 398 | dst_rel_offset_t sibling_block_off; /* offset to next sibling block */ |
| 399 | dst_rel_offset_t child_block_off; /* offset to first contained block */ |
| 400 | dst_rel_offset_t noffset; /* offset to block name string */ |
| 401 | dst_sect_ref_t symbols_start; /* start of debug symbols */ |
| 402 | unsigned short n_of_code_ranges; /* size of array... */ |
| 403 | dst_code_range_t code_ranges[dst_dummy_array_size] ALIGNED1; |
| 404 | } |
| 405 | dst_rec_block_t ALIGNED1; |
| 406 | |
| 407 | |
| 408 | /*-------------------------- |
| 409 | AUX SECT INFO TABLE record |
| 410 | -------------------------- |
| 411 | Appears as an auxiliary to a block record. Expands code range information |
| 412 | by providing references into additional, language-dependent sections for |
| 413 | information related to specific code ranges of the block. Sect info table |
| 414 | entries parallel code range array entries of the same index. |
| 415 | */ |
| 416 | |
| 417 | typedef struct |
| 418 | { |
| 419 | unsigned char tag; /* currently can only be zero */ |
| 420 | unsigned char number_of_refs; /* size of array: */ |
| 421 | dst_sect_ref_t refs[dst_dummy_array_size] ALIGNED1; |
| 422 | } |
| 423 | dst_rec_sect_info_tab_t ALIGNED1; |
| 424 | |
| 425 | /*=================================================*/ |
| 426 | /*========== RECORDS IN .symbols SECTION ==========*/ |
| 427 | /*=================================================*/ |
| 428 | |
| 429 | /*----------------- |
| 430 | CONSTANT record |
| 431 | ----------------- |
| 432 | Describes a symbolic constant. |
| 433 | */ |
| 434 | |
| 435 | typedef struct |
| 436 | { |
| 437 | float r; /* real part */ |
| 438 | float i; /* imaginary part */ |
| 439 | } |
| 440 | dst_complex_t; |
| 441 | |
| 442 | typedef struct |
| 443 | { |
| 444 | double dr; /* real part */ |
| 445 | double di; /* imaginary part */ |
| 446 | } |
| 447 | dst_double_complex_t; |
| 448 | |
| 449 | /* The following record provides a way of describing constant values with |
| 450 | non-standard type and no limit on size. |
| 451 | */ |
| 452 | typedef union |
| 453 | { |
| 454 | char char_data[dst_dummy_array_size]; |
| 455 | short int_data[dst_dummy_array_size]; |
| 456 | long long_data[dst_dummy_array_size]; |
| 457 | } |
| 458 | dst_big_kon_t; |
| 459 | |
| 460 | /* Representation of the value of a general constant. |
| 461 | */ |
| 462 | typedef struct |
| 463 | { |
| 464 | unsigned short length; /* size of constant value (bytes) */ |
| 465 | |
| 466 | union |
| 467 | { |
| 468 | unsigned short kon_int8; |
| 469 | short kon_int16; |
| 470 | long kon_int32 ALIGNED1; |
| 471 | float kon_real ALIGNED1; |
| 472 | double kon_dbl ALIGNED1; |
| 473 | dst_complex_t kon_cplx ALIGNED1; |
| 474 | dst_double_complex_t kon_dcplx ALIGNED1; |
| 475 | char kon_char; |
| 476 | dst_big_kon_t kon ALIGNED1; |
| 477 | } |
| 478 | val; /* value data of constant */ |
| 479 | } |
| 480 | dst_const_t ALIGNED1; |
| 481 | |
| 482 | typedef struct |
| 483 | { |
| 484 | dst_rel_offset_t noffset; /* offset to name string */ |
| 485 | dst_src_loc_t src_loc; /* file/line of const definition */ |
| 486 | dst_type_t type_desc; /* type of this (manifest) constant */ |
| 487 | dst_const_t value; |
| 488 | } |
| 489 | dst_rec_const_t ALIGNED1; |
| 490 | |
| 491 | /*---------------- |
| 492 | VARIABLE record |
| 493 | ---------------- |
| 494 | Describes a program variable. |
| 495 | */ |
| 496 | |
| 497 | /* Variable attributes. These define certain variable semantics to the |
| 498 | debugger. |
| 499 | */ |
| 500 | typedef enum |
| 501 | { |
| 502 | dst_var_attr_read_only, /* is read-only (a program literal) */ |
| 503 | dst_var_attr_volatile, /* same as compiler's VOLATILE attribute */ |
| 504 | dst_var_attr_global, /* is a global definition or reference */ |
| 505 | dst_var_attr_compiler_gen, /* is compiler-generated */ |
| 506 | dst_var_attr_static, /* has static location */ |
| 507 | dst_var_attr_END_OF_ENUM |
| 508 | } |
| 509 | dst_var_attr_t; |
| 510 | |
| 511 | typedef struct |
| 512 | { |
| 513 | dst_rel_offset_t noffset; /* offset to name string */ |
| 514 | dst_rel_offset_t loffset; /* offset to loc string */ |
| 515 | dst_src_loc_t src_loc; /* file/line of variable definition */ |
| 516 | dst_type_t type_desc; /* type descriptor */ |
| 517 | unsigned short attributes; /* mask of dst_var_attr_t flags */ |
| 518 | } |
| 519 | dst_rec_variable_t ALIGNED1; |
| 520 | |
| 521 | |
| 522 | /*---------------- |
| 523 | old VAR record |
| 524 | ----------------- |
| 525 | Used by older compilers to describe a variable |
| 526 | */ |
| 527 | |
| 528 | typedef enum |
| 529 | { |
| 530 | dst_var_loc_unknown, /* Actually defined as "unknown" */ |
| 531 | dst_var_loc_abs, /* Absolute address */ |
| 532 | dst_var_loc_sect_off, /* Absolute address as a section offset */ |
| 533 | dst_var_loc_ind_sect_off, /* An indexed section offset ???? */ |
| 534 | dst_var_loc_reg, /* register */ |
| 535 | dst_var_loc_reg_rel, /* register relative - usually fp */ |
| 536 | dst_var_loc_ind_reg_rel, /* Indexed register relative */ |
| 537 | dst_var_loc_ftn_ptr_based, /* Fortran pointer based */ |
| 538 | dst_var_loc_pc_rel, /* PC relative. Really. */ |
| 539 | dst_var_loc_external, /* External */ |
| 540 | dst_var_loc_END_OF_ENUM |
| 541 | } |
| 542 | dst_var_loc_t; |
| 543 | |
| 544 | /* Locations come in two versions. The short, and the long. The difference |
| 545 | * between the short and the long is the addition of a statement number |
| 546 | * field to the start andend of the range of the long, and and unkown |
| 547 | * purpose field in the middle. Also, loc_type and loc_index aren't |
| 548 | * bitfields in the long version. |
| 549 | */ |
| 550 | |
| 551 | typedef struct |
| 552 | { |
| 553 | unsigned short loc_type:4; |
| 554 | unsigned short loc_index:12; |
| 555 | long location; |
| 556 | short start_line; /* start_line and end_line? */ |
| 557 | short end_line; /* I'm guessing here. */ |
| 558 | } |
| 559 | dst_var_loc_short_t; |
| 560 | |
| 561 | typedef struct |
| 562 | { |
| 563 | unsigned short loc_type; |
| 564 | unsigned short loc_index; |
| 565 | long location; |
| 566 | short unknown; /* Always 0003 or 3b3c. Why? */ |
| 567 | short start_statement; |
| 568 | short start_line; |
| 569 | short end_statement; |
| 570 | short end_line; |
| 571 | } |
| 572 | dst_var_loc_long_t; |
| 573 | |
| 574 | |
| 575 | typedef struct |
| 576 | { |
| 577 | dst_rel_offset_t noffset; /* offset to name string */ |
| 578 | dst_src_loc_t src_loc; /* file/line of description */ |
| 579 | dst_type_t type_desc; /* Type description */ |
| 580 | unsigned short attributes; /* mask of dst_var_attr_t flags */ |
| 581 | unsigned short no_of_locs:15; /* Number of locations */ |
| 582 | unsigned short short_locs:1; /* True if short locations. */ |
| 583 | union |
| 584 | { |
| 585 | dst_var_loc_short_t shorts[dst_dummy_array_size]; |
| 586 | dst_var_loc_long_t longs[dst_dummy_array_size]; |
| 587 | } |
| 588 | locs; |
| 589 | } |
| 590 | dst_rec_var_t; |
| 591 | |
| 592 | /*---------------- |
| 593 | old LABEL record |
| 594 | ----------------- |
| 595 | Used by older compilers to describe a label |
| 596 | */ |
| 597 | |
| 598 | typedef struct |
| 599 | { |
| 600 | dst_rel_offset_t noffset; /* offset to name string */ |
| 601 | dst_src_loc_t src_loc; /* file/line of description */ |
| 602 | char location[12]; /* location string */ |
| 603 | } |
| 604 | dst_rec_old_label_t ALIGNED1; |
| 605 | |
| 606 | /*---------------- |
| 607 | POINTER record |
| 608 | ---------------- |
| 609 | Describes a pointer type. |
| 610 | */ |
| 611 | |
| 612 | typedef struct |
| 613 | { |
| 614 | dst_rel_offset_t noffset; /* offset to the name string for this type */ |
| 615 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 616 | dst_type_t type_desc; /* base type of this pointer */ |
| 617 | } |
| 618 | dst_rec_pointer_t ALIGNED1; |
| 619 | |
| 620 | |
| 621 | /*------------- |
| 622 | ARRAY record |
| 623 | ------------- |
| 624 | Describes an array type. |
| 625 | |
| 626 | Multidimensional arrays are described with a number of dst_rec_array_t |
| 627 | records, one per array dimension, each linked to the next through the |
| 628 | elem_type_desc.doffset field. Each record must have its multi_dim flag |
| 629 | set. |
| 630 | |
| 631 | If column_major is true (as with FORTRAN arrays) then the last array bound in |
| 632 | the declaration is the first array index in memory, which is the opposite of |
| 633 | the usual case (as with Pascal and C arrays). |
| 634 | |
| 635 | Variable array bounds are described by auxiliary records; if aux_var_bound |
| 636 | records are present, the lo_bound and hi_bound fields of this record are |
| 637 | ignored by the debugger. |
| 638 | |
| 639 | span_comp identifies one of the language-dependent ways in which the distance |
| 640 | between successive array elements (span) is calculated. |
| 641 | dst_use_span_field -- the span is the value of span field. |
| 642 | dst_compute_from_prev -- the span is the size of the previous dimension. |
| 643 | dst_compute_from_next -- the span is the size of the next dimension. |
| 644 | In the latter two cases, the span field contains an amount of padding to add |
| 645 | to the size of the appropriate dimension to calculate the span. |
| 646 | */ |
| 647 | |
| 648 | typedef enum |
| 649 | { |
| 650 | dst_use_span_field, |
| 651 | dst_compute_from_prev, |
| 652 | dst_compute_from_next, |
| 653 | dst_span_comp_END_OF_ENUM |
| 654 | } |
| 655 | dst_span_comp_t; |
| 656 | |
| 657 | typedef struct |
| 658 | { |
| 659 | dst_rel_offset_t noffset; /* offset to name string */ |
| 660 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 661 | dst_type_t elem_type_desc; /* array element type */ |
| 662 | dst_type_t indx_type_desc; /* array index type */ |
| 663 | long lo_bound; /* lower bound of index */ |
| 664 | long hi_bound; /* upper bound of index */ |
| 665 | unsigned long span; /* see above */ |
| 666 | unsigned long size; /* total array size (bytes) */ |
| 667 | boolean multi_dim:1; |
| 668 | boolean is_packed:1; /* true if packed array */ |
| 669 | boolean is_signed:1; /* true if packed elements are signed */ |
| 670 | dst_span_comp_t span_comp:2; /* how to compute span */ |
| 671 | boolean column_major:1; |
| 672 | unsigned short reserved:2; /* must be zero */ |
| 673 | unsigned short elem_size:8; /* element size if packed (bits) */ |
| 674 | } |
| 675 | dst_rec_array_t ALIGNED1; |
| 676 | |
| 677 | |
| 678 | /*----------------- |
| 679 | SUBRANGE record |
| 680 | ----------------- |
| 681 | Describes a subrange type. |
| 682 | */ |
| 683 | |
| 684 | /* Variable subrange bounds are described by auxiliary records; if aux_var_bound |
| 685 | records are present, the lo_bound and hi_bound fields of this record are |
| 686 | ignored by the debugger. |
| 687 | */ |
| 688 | |
| 689 | typedef struct |
| 690 | { |
| 691 | dst_rel_offset_t noffset; /* offset to name string */ |
| 692 | dst_src_loc_t src_loc; /* file/line of subrange definition */ |
| 693 | dst_type_t type_desc; /* parent type */ |
| 694 | long lo_bound; /* lower bound of subrange */ |
| 695 | long hi_bound; /* upper bound of subrange */ |
| 696 | unsigned short size; /* storage size (bytes) */ |
| 697 | } |
| 698 | dst_rec_subrange_t ALIGNED1; |
| 699 | |
| 700 | |
| 701 | /*--------------- |
| 702 | STRING record |
| 703 | --------------- |
| 704 | Describes a string type. |
| 705 | */ |
| 706 | |
| 707 | /* Variable subrange bounds are described by auxiliary records; if aux_var_bound |
| 708 | records are present, the lo_bound and hi_bound fields of this record are |
| 709 | ignored by the debugger. |
| 710 | */ |
| 711 | |
| 712 | typedef struct |
| 713 | { |
| 714 | dst_rel_offset_t noffset; /* offset to name string */ |
| 715 | dst_src_loc_t src_loc; /* file/line of string definition */ |
| 716 | dst_type_t elem_type_desc; /* element type */ |
| 717 | dst_type_t indx_type_desc; /* index type */ |
| 718 | long lo_bound; /* lower bound */ |
| 719 | long hi_bound; /* upper bound */ |
| 720 | unsigned long size; /* total string size (bytes) if fixed */ |
| 721 | } |
| 722 | dst_rec_string_t ALIGNED1; |
| 723 | |
| 724 | |
| 725 | /*--------------- |
| 726 | SET record |
| 727 | --------------- |
| 728 | Describes a set type. |
| 729 | */ |
| 730 | |
| 731 | typedef struct |
| 732 | { |
| 733 | dst_rel_offset_t noffset; /* offset to name string */ |
| 734 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 735 | dst_type_t type_desc; /* element type */ |
| 736 | unsigned short nbits; /* number of bits in set */ |
| 737 | unsigned short size; /* storage size (bytes) */ |
| 738 | } |
| 739 | dst_rec_set_t ALIGNED1; |
| 740 | |
| 741 | |
| 742 | /*----------------------------- |
| 743 | IMPLICIT ENUMERATION record |
| 744 | ----------------------------- |
| 745 | Describes an enumeration type with implicit element values = 0, 1, 2, ... |
| 746 | (Pascal-style). |
| 747 | */ |
| 748 | |
| 749 | typedef struct |
| 750 | { |
| 751 | dst_rel_offset_t noffset; /* offset to name string */ |
| 752 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 753 | unsigned short nelems; /* number of elements in enumeration */ |
| 754 | unsigned short size; /* storage size (bytes) */ |
| 755 | /* offsets to name strings of elements 0, 1, 2, ... */ |
| 756 | dst_rel_offset_t elem_noffsets[dst_dummy_array_size]; |
| 757 | } |
| 758 | dst_rec_implicit_enum_t ALIGNED1; |
| 759 | |
| 760 | |
| 761 | /*----------------------------- |
| 762 | EXPLICIT ENUMERATION record |
| 763 | ----------------------------- |
| 764 | Describes an enumeration type with explicitly assigned element values |
| 765 | (C-style). |
| 766 | */ |
| 767 | |
| 768 | typedef struct |
| 769 | { |
| 770 | dst_rel_offset_t noffset; /* offset to element name string */ |
| 771 | long value; /* element value */ |
| 772 | } |
| 773 | dst_enum_elem_t; |
| 774 | |
| 775 | typedef struct |
| 776 | { |
| 777 | dst_rel_offset_t noffset; /* offset to name string */ |
| 778 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 779 | unsigned short nelems; /* number of elements in enumeration */ |
| 780 | unsigned short size; /* storage size (bytes) */ |
| 781 | /* name/value pairs, one describing each enumeration value: */ |
| 782 | dst_enum_elem_t elems[dst_dummy_array_size]; |
| 783 | } |
| 784 | dst_rec_explicit_enum_t ALIGNED1; |
| 785 | |
| 786 | |
| 787 | /*----------------------- |
| 788 | RECORD / UNION record |
| 789 | ----------------------- |
| 790 | Describes a record (struct) or union. |
| 791 | |
| 792 | If the record is larger than 2**16 bytes then an attached aux record |
| 793 | specifies its size. Also, if the record is stored in short form then |
| 794 | attached records specify field offsets larger than 2**16 bytes. |
| 795 | |
| 796 | Whether the fields[] array or sfields[] array is used is selected by |
| 797 | the dst_rec_type_t of the overall dst record. |
| 798 | */ |
| 799 | |
| 800 | /* |
| 801 | Record field descriptor, short form. This form handles only fields which |
| 802 | are an even number of bytes long, located some number of bytes from the |
| 803 | start of the record. |
| 804 | */ |
| 805 | typedef struct |
| 806 | { |
| 807 | dst_rel_offset_t noffset; /* offset to field name string */ |
| 808 | dst_type_t type_desc; /* field type */ |
| 809 | unsigned short foffset; /* field offset from start of record (bytes) */ |
| 810 | } |
| 811 | dst_short_field_t ALIGNED1; |
| 812 | |
| 813 | typedef struct |
| 814 | { |
| 815 | dst_rel_offset_t noffset; /* offset to name string */ |
| 816 | dst_type_t type_desc; /* field type */ |
| 817 | unsigned short foffset; /* byte offset */ |
| 818 | unsigned short is_packed:1; /* True if field is packed */ |
| 819 | unsigned short bit_offset:6; /* Bit offset */ |
| 820 | unsigned short size:6; /* Size in bits */ |
| 821 | unsigned short sign:1; /* True if signed */ |
| 822 | unsigned short pad:2; /* Padding. Must be 0 */ |
| 823 | } |
| 824 | dst_old_field_t ALIGNED1; |
| 825 | |
| 826 | /* Tag enumeration for long record field descriptor: |
| 827 | */ |
| 828 | typedef enum |
| 829 | { |
| 830 | dst_field_byte, |
| 831 | dst_field_bit, |
| 832 | dst_field_loc, |
| 833 | dst_field_END_OF_ENUM |
| 834 | } |
| 835 | dst_field_format_t; |
| 836 | |
| 837 | /* |
| 838 | Record field descriptor, long form. The format of the field information |
| 839 | is identified by the format_tag, which contains one of the above values. |
| 840 | The field_byte variant is equivalent to the short form of field descriptor. |
| 841 | The field_bit variant handles fields which are any number of bits long, |
| 842 | located some number of bits from the start of the record. The field_loc |
| 843 | variant allows the location of the field to be described by a general loc |
| 844 | string. |
| 845 | */ |
| 846 | typedef struct |
| 847 | { |
| 848 | dst_rel_offset_t noffset; /* offset to name of field */ |
| 849 | dst_type_t type_desc; /* type of field */ |
| 850 | union |
| 851 | { |
| 852 | struct |
| 853 | { |
| 854 | dst_field_format_t format_tag:2; /* dst_field_byte */ |
| 855 | unsigned long offset:30; /* offset of field in bytes */ |
| 856 | } |
| 857 | field_byte ALIGNED1; |
| 858 | struct |
| 859 | { |
| 860 | dst_field_format_t format_tag:2; /* dst_field_bit */ |
| 861 | unsigned long nbits:6; /* bit size of field */ |
| 862 | unsigned long is_signed:1; /* signed/unsigned attribute */ |
| 863 | unsigned long bit_offset:3; /* bit offset from byte boundary */ |
| 864 | int pad:4; /* must be zero */ |
| 865 | unsigned short byte_offset; /* offset of byte boundary */ |
| 866 | } |
| 867 | field_bit ALIGNED1; |
| 868 | struct |
| 869 | { |
| 870 | dst_field_format_t format_tag:2; /* dst_field_loc */ |
| 871 | int loffset:30; /* dst_rel_offset_t to loc string */ |
| 872 | } |
| 873 | field_loc ALIGNED1; |
| 874 | } |
| 875 | f ALIGNED1; |
| 876 | } |
| 877 | dst_field_t; |
| 878 | |
| 879 | /* The field_loc.loffset field is a 30-bit signed value. Some versions of C do |
| 880 | not support signed bit fields. The following macro will extract that field |
| 881 | as a signed value: |
| 882 | */ |
| 883 | #define dst_field_loffset(field_rec) \ |
| 884 | ( ((int) ((field_rec).f.field_loc.loffset << 2)) >> 2 ) |
| 885 | |
| 886 | |
| 887 | typedef struct |
| 888 | { |
| 889 | dst_rel_offset_t noffset; /* offset to record name string */ |
| 890 | dst_src_loc_t src_loc; /* file/line where this record is defined */ |
| 891 | unsigned short size; /* storage size (bytes) */ |
| 892 | unsigned short nfields; /* number of fields in this record */ |
| 893 | union |
| 894 | { |
| 895 | dst_field_t fields[dst_dummy_array_size]; |
| 896 | dst_short_field_t sfields[dst_dummy_array_size]; |
| 897 | dst_old_field_t ofields[dst_dummy_array_size]; |
| 898 | } |
| 899 | f; /* array of fields */ |
| 900 | } |
| 901 | dst_rec_record_t ALIGNED1; |
| 902 | |
| 903 | |
| 904 | /*------------- |
| 905 | FILE record |
| 906 | ------------- |
| 907 | Describes a file type. |
| 908 | */ |
| 909 | |
| 910 | typedef struct |
| 911 | { |
| 912 | dst_rel_offset_t noffset; /* offset to name string */ |
| 913 | dst_src_loc_t src_loc; /* file/line where type was defined */ |
| 914 | dst_type_t type_desc; /* file element type */ |
| 915 | } |
| 916 | dst_rec_file_t ALIGNED1; |
| 917 | |
| 918 | |
| 919 | /*--------------- |
| 920 | OFFSET record |
| 921 | --------------- |
| 922 | Describes a Pascal offset type. |
| 923 | (This type, an undocumented Domain Pascal extension, is currently not |
| 924 | supported by the debugger) |
| 925 | */ |
| 926 | |
| 927 | typedef struct |
| 928 | { |
| 929 | dst_rel_offset_t noffset; /* offset to the name string */ |
| 930 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 931 | dst_type_t area_type_desc; /* area type */ |
| 932 | dst_type_t base_type_desc; /* base type */ |
| 933 | long lo_bound; /* low bound of the offset range */ |
| 934 | long hi_bound; /* high bound of the offset range */ |
| 935 | long bias; /* bias */ |
| 936 | unsigned short scale; /* scale factor */ |
| 937 | unsigned short size; /* storage size (bytes) */ |
| 938 | } |
| 939 | dst_rec_offset_t ALIGNED1; |
| 940 | |
| 941 | |
| 942 | /*-------------- |
| 943 | ALIAS record |
| 944 | -------------- |
| 945 | Describes a type alias (e.g., typedef). |
| 946 | */ |
| 947 | |
| 948 | typedef struct |
| 949 | { |
| 950 | dst_rel_offset_t noffset; /* offset to name string */ |
| 951 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 952 | dst_type_t type_desc; /* parent type */ |
| 953 | } |
| 954 | dst_rec_alias_t ALIGNED1; |
| 955 | |
| 956 | |
| 957 | /*------------------ |
| 958 | SIGNATURE record |
| 959 | ------------------ |
| 960 | Describes a procedure/function type. |
| 961 | */ |
| 962 | |
| 963 | /* Enumeration of argument semantics. Note that most are mutually |
| 964 | exclusive. |
| 965 | */ |
| 966 | typedef enum |
| 967 | { |
| 968 | dst_arg_attr_val, /* passed by value */ |
| 969 | dst_arg_attr_ref, /* passed by reference */ |
| 970 | dst_arg_attr_name, /* passed by name */ |
| 971 | dst_arg_attr_in, /* readable in the callee */ |
| 972 | dst_arg_attr_out, /* writable in the callee */ |
| 973 | dst_arg_attr_hidden, /* not visible in the caller */ |
| 974 | dst_arg_attr_END_OF_ENUM |
| 975 | } |
| 976 | dst_arg_attr_t; |
| 977 | |
| 978 | /* Argument descriptor. Actually points to a variable record for most of the |
| 979 | information. |
| 980 | */ |
| 981 | typedef struct |
| 982 | { |
| 983 | dst_rel_offset_t var_offset; /* offset to variable record */ |
| 984 | unsigned short attributes; /* a mask of dst_arg_attr_t flags */ |
| 985 | } |
| 986 | dst_arg_t ALIGNED1; |
| 987 | |
| 988 | typedef struct |
| 989 | { |
| 990 | dst_rel_offset_t noffset; /* offset to name string */ |
| 991 | dst_src_loc_t src_loc; /* file/line of function definition */ |
| 992 | dst_rel_offset_t result; /* offset to function result variable record */ |
| 993 | unsigned short nargs; /* number of arguments */ |
| 994 | dst_arg_t args[dst_dummy_array_size]; |
| 995 | } |
| 996 | dst_rec_signature_t ALIGNED1; |
| 997 | |
| 998 | /*-------------- |
| 999 | SCOPE record |
| 1000 | -------------- |
| 1001 | Obsolete. Use the new ENTRY type instead. |
| 1002 | Old compilers may put this in as the first entry in a function, |
| 1003 | terminated by an end of scope entry. |
| 1004 | */ |
| 1005 | |
| 1006 | typedef struct |
| 1007 | { |
| 1008 | dst_rel_offset_t noffset; /* Name offset */ |
| 1009 | dst_src_loc_t start_line; /* Starting line */ |
| 1010 | dst_src_loc_t end_line; /* Ending line */ |
| 1011 | } |
| 1012 | dst_rec_scope_t ALIGNED1; |
| 1013 | |
| 1014 | /*-------------- |
| 1015 | ENTRY record |
| 1016 | -------------- |
| 1017 | Describes a procedure/function entry point. An entry record is to a |
| 1018 | signature record roughly as a variable record is to a type descriptor record. |
| 1019 | |
| 1020 | The entry_number field is keyed to the entry numbers in .lines -- the |
| 1021 | debugger locates the code location of an entry by searching the line |
| 1022 | number table for an entry numbered with the value of entry_number. The |
| 1023 | main entry is numbered zero. |
| 1024 | */ |
| 1025 | |
| 1026 | typedef struct |
| 1027 | { |
| 1028 | dst_rel_offset_t noffset; /* offset to entry name string */ |
| 1029 | dst_rel_offset_t loffset; /* where to jump to call this entry */ |
| 1030 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 1031 | dst_rel_offset_t sig_desc; /* offset to signature descriptor */ |
| 1032 | unsigned int entry_number:8; |
| 1033 | int pad:8; /* must be zero */ |
| 1034 | } |
| 1035 | dst_rec_entry_t ALIGNED1; |
| 1036 | |
| 1037 | /*----------------------- |
| 1038 | Old format ENTRY record |
| 1039 | ----------------------- |
| 1040 | Supposedly obsolete but still used by some compilers. |
| 1041 | */ |
| 1042 | |
| 1043 | typedef struct |
| 1044 | { |
| 1045 | dst_rel_offset_t noffset; /* Offset to entry name string */ |
| 1046 | dst_src_loc_t src_loc; /* Location in source */ |
| 1047 | dst_rel_offset_t sig_desc; /* Signature description */ |
| 1048 | char unknown[36]; |
| 1049 | } |
| 1050 | dst_rec_old_entry_t ALIGNED1; |
| 1051 | |
| 1052 | /*-------------- |
| 1053 | LABEL record |
| 1054 | -------------- |
| 1055 | Describes a program label. |
| 1056 | */ |
| 1057 | |
| 1058 | typedef struct |
| 1059 | { |
| 1060 | dst_rel_offset_t noffset; /* offset to label string */ |
| 1061 | dst_rel_offset_t loffset; /* offset to loc string */ |
| 1062 | dst_src_loc_t src_loc; /* file/line of definition */ |
| 1063 | } |
| 1064 | dst_rec_label_t ALIGNED1; |
| 1065 | |
| 1066 | |
| 1067 | /*----------------------- |
| 1068 | AUXILIARY SIZE record |
| 1069 | ----------------------- |
| 1070 | May appear in the auxiliary record list of any type or variable record to |
| 1071 | modify the default size of the type or variable. |
| 1072 | */ |
| 1073 | |
| 1074 | typedef struct |
| 1075 | { |
| 1076 | unsigned long size; /* size (bytes) */ |
| 1077 | } |
| 1078 | dst_rec_aux_size_t ALIGNED1; |
| 1079 | |
| 1080 | |
| 1081 | /*----------------------- |
| 1082 | AUXILIARY ALIGN record |
| 1083 | ----------------------- |
| 1084 | May appear in the auxiliary record list of any type or variable record to |
| 1085 | modify the default alignment of the type or variable. |
| 1086 | */ |
| 1087 | |
| 1088 | typedef struct |
| 1089 | { |
| 1090 | unsigned short alignment; /* # of low order zero bits */ |
| 1091 | } |
| 1092 | dst_rec_aux_align_t ALIGNED1; |
| 1093 | |
| 1094 | |
| 1095 | /*----------------------------- |
| 1096 | AUXILIARY FIELD SIZE record |
| 1097 | ----------------------------- |
| 1098 | May appear in the auxiliary record list of any RECORD/UNION record to |
| 1099 | modify the default size of a field. |
| 1100 | */ |
| 1101 | |
| 1102 | typedef struct |
| 1103 | { |
| 1104 | unsigned short field_no; /* field number */ |
| 1105 | unsigned long size; /* size (bits) */ |
| 1106 | } |
| 1107 | dst_rec_aux_field_size_t ALIGNED1; |
| 1108 | |
| 1109 | |
| 1110 | |
| 1111 | /*----------------------------- |
| 1112 | AUXILIARY FIELD OFFSET record |
| 1113 | ----------------------------- |
| 1114 | May appear in the auxiliary record list of any RECORD/UNION record to |
| 1115 | specify a field offset larger than 2**16. |
| 1116 | */ |
| 1117 | |
| 1118 | typedef struct |
| 1119 | { |
| 1120 | unsigned short field_no; /* field number */ |
| 1121 | unsigned long foffset; /* offset */ |
| 1122 | } |
| 1123 | dst_rec_aux_field_off_t ALIGNED1; |
| 1124 | |
| 1125 | |
| 1126 | /*----------------------------- |
| 1127 | AUXILIARY FIELD ALIGN record |
| 1128 | ----------------------------- |
| 1129 | May appear in the auxiliary record list of any RECORD/UNION record to |
| 1130 | modify the default alignment of a field. |
| 1131 | */ |
| 1132 | |
| 1133 | typedef struct |
| 1134 | { |
| 1135 | unsigned short field_no; /* field number */ |
| 1136 | unsigned short alignment; /* number of low order zero bits */ |
| 1137 | } |
| 1138 | dst_rec_aux_field_align_t ALIGNED1; |
| 1139 | |
| 1140 | |
| 1141 | /*---------------------------- |
| 1142 | AUXILIARY VAR BOUND record |
| 1143 | ---------------------------- |
| 1144 | May appear in the auxiliary record list of any ARRAY, SUBRANGE or STRING |
| 1145 | record to describe a variable bound for the range of the type. |
| 1146 | */ |
| 1147 | |
| 1148 | typedef enum |
| 1149 | { |
| 1150 | dst_low_bound, /* the low bound is variable */ |
| 1151 | dst_high_bound, /* the high bound is variable */ |
| 1152 | dst_var_bound_END_OF_ENUM |
| 1153 | } |
| 1154 | dst_var_bound_t; |
| 1155 | |
| 1156 | typedef struct |
| 1157 | { |
| 1158 | unsigned short which; /* which bound */ |
| 1159 | dst_rel_offset_t voffset ALIGNED1; /* variable that defines bound */ |
| 1160 | } |
| 1161 | dst_rec_aux_var_bound_t ALIGNED1; |
| 1162 | |
| 1163 | |
| 1164 | /*---------------------------------- |
| 1165 | AUXILIARY TYPE DERIVATION record |
| 1166 | ---------------------------------- |
| 1167 | May appear in the auxiliary record list of any RECORD/UNION record to denote |
| 1168 | class inheritance of that type from a parent type. |
| 1169 | |
| 1170 | Inheritance implies that it is possible to convert the inheritor type to the |
| 1171 | inherited type, retaining those fields which were inherited. To allow this, |
| 1172 | orig_field_no, a field number into the record type, is provided. If |
| 1173 | orig_is_pointer is false, then the start of the inherited record is located |
| 1174 | at the location of the field indexed by orig_field_no. If orig_is_pointer |
| 1175 | is true, then it is located at the address contained in the field indexed |
| 1176 | by orig_field_no (assumed to be a pointer). |
| 1177 | */ |
| 1178 | |
| 1179 | typedef struct |
| 1180 | { |
| 1181 | dst_type_t parent_type; /* reference to inherited type */ |
| 1182 | unsigned short orig_field_no; |
| 1183 | boolean orig_is_pointer:1; |
| 1184 | int unused:15; /* must be zero */ |
| 1185 | } |
| 1186 | dst_rec_aux_type_deriv_t ALIGNED1; |
| 1187 | |
| 1188 | |
| 1189 | /*------------------------------------ |
| 1190 | AUXILIARY VARIABLE LIFETIME record |
| 1191 | ------------------------------------ |
| 1192 | May appear in the auxiliary record list of a VARIABLE record to add location |
| 1193 | information for an additional variable lifetime. |
| 1194 | */ |
| 1195 | |
| 1196 | typedef struct |
| 1197 | { |
| 1198 | dst_rel_offset_t loffset; |
| 1199 | } |
| 1200 | dst_rec_aux_lifetime_t ALIGNED1; |
| 1201 | |
| 1202 | |
| 1203 | /*------------------------------- |
| 1204 | AUXILIARY POINTER BASE record |
| 1205 | ------------------------------- |
| 1206 | May appear in the auxiliary record list of a VARIABLE record to provide a |
| 1207 | pointer base to substitute for references to any such bases in the location |
| 1208 | string of the variable. A pointer base is another VARIABLE record. When |
| 1209 | the variable is evaluated by the debugger, it uses the current value of the |
| 1210 | pointer base variable in computing its location. |
| 1211 | |
| 1212 | This is useful for representing FORTRAN pointer-based variables. |
| 1213 | */ |
| 1214 | |
| 1215 | typedef struct |
| 1216 | { |
| 1217 | dst_rel_offset_t voffset; |
| 1218 | } |
| 1219 | dst_rec_aux_ptr_base_t ALIGNED1; |
| 1220 | |
| 1221 | |
| 1222 | /*--------------------------------- |
| 1223 | AUXILIARY REGISTER VALUE record |
| 1224 | --------------------------------- |
| 1225 | May appear in the auxiliary record list of an ENTRY record to specify |
| 1226 | a register that must be set to a specific value before jumping to the entry |
| 1227 | point in a debugger "call". The debugger must set the debuggee register, |
| 1228 | specified by the register code, to the value of the *address* to which the |
| 1229 | location string resolves. If the address is register-relative, then the |
| 1230 | call cannot be made unless the current stack frame is the lexical parent |
| 1231 | of the entry. An example of this is when a (Pascal) nested procedure |
| 1232 | contains references to its parent's variables, which it accesses through |
| 1233 | a static link register. The static link register must be set to some |
| 1234 | address relative to the parent's stack base register. |
| 1235 | */ |
| 1236 | |
| 1237 | typedef struct |
| 1238 | { |
| 1239 | unsigned short reg; /* identifies register to set (isp enum) */ |
| 1240 | dst_rel_offset_t loffset; /* references a location string */ |
| 1241 | } |
| 1242 | dst_rec_aux_reg_val_t ALIGNED1; |
| 1243 | |
| 1244 | |
| 1245 | /*==========================================================*/ |
| 1246 | /*========== RECORDS USED IN .blocks AND .symbols ==========*/ |
| 1247 | /*==========================================================*/ |
| 1248 | |
| 1249 | /*--------------------- |
| 1250 | STRING TABLE record |
| 1251 | --------------------- |
| 1252 | A string table record contains any number of null-terminated, variable length |
| 1253 | strings. The length field gives the size in bytes of the text field, which |
| 1254 | can be any size. |
| 1255 | |
| 1256 | The global name table shares this format. This record appears in the |
| 1257 | .blocks section. Each string in the table identifies a global defined in |
| 1258 | the current compilation unit. |
| 1259 | |
| 1260 | The loc pool record shares this format as well. Loc strings are described |
| 1261 | elsewhere. |
| 1262 | */ |
| 1263 | |
| 1264 | typedef struct |
| 1265 | { |
| 1266 | unsigned long length; |
| 1267 | char text[dst_dummy_array_size]; |
| 1268 | } |
| 1269 | dst_rec_string_tab_t ALIGNED1; |
| 1270 | |
| 1271 | |
| 1272 | /*----------------------- |
| 1273 | AUXILIARY QUAL record |
| 1274 | ----------------------- |
| 1275 | May appear in the auxiliary record list of any BLOCK, VARIABLE, or type record |
| 1276 | to provide it with a fully-qualified, language-dependent name. |
| 1277 | */ |
| 1278 | |
| 1279 | typedef struct |
| 1280 | { |
| 1281 | dst_rel_offset_t lang_qual_name; |
| 1282 | } |
| 1283 | dst_rec_aux_qual_t ALIGNED1; |
| 1284 | |
| 1285 | |
| 1286 | /*---------------- |
| 1287 | FORWARD record |
| 1288 | ---------------- |
| 1289 | Reference to a record somewhere else. This allows identical definitions in |
| 1290 | different scopes to share data. |
| 1291 | */ |
| 1292 | |
| 1293 | typedef struct |
| 1294 | { |
| 1295 | dst_rel_offset_t rec_off; |
| 1296 | } |
| 1297 | dst_rec_forward_t ALIGNED1; |
| 1298 | |
| 1299 | |
| 1300 | /*------------------------------- |
| 1301 | AUXILIARY SOURCE RANGE record |
| 1302 | ------------------------------- |
| 1303 | May appear in the auxiliary record list of any BLOCK record to specify a |
| 1304 | range of source lines over which the block is active. |
| 1305 | */ |
| 1306 | |
| 1307 | typedef struct |
| 1308 | { |
| 1309 | dst_src_loc_t first_line; /* first source line */ |
| 1310 | dst_src_loc_t last_line; /* last source line */ |
| 1311 | } |
| 1312 | dst_rec_aux_src_range_t ALIGNED1; |
| 1313 | |
| 1314 | |
| 1315 | /*------------------ |
| 1316 | EXTENSION record |
| 1317 | ------------------ |
| 1318 | Provision for "foreign" records, such as might be generated by a non-Apollo |
| 1319 | compiler. Apollo software will ignore these. |
| 1320 | */ |
| 1321 | |
| 1322 | typedef struct |
| 1323 | { |
| 1324 | unsigned short rec_size; /* record size (bytes) */ |
| 1325 | unsigned short ext_type; /* defined by whoever generates it */ |
| 1326 | unsigned short ext_data; /* place-holder for arbitrary amount of data */ |
| 1327 | } |
| 1328 | dst_rec_extension_t ALIGNED1; |
| 1329 | |
| 1330 | |
| 1331 | /* |
| 1332 | ** DEBUG SYMBOL record -- The wrapper for all .blocks and .symbols records. |
| 1333 | ** |
| 1334 | ** This record ties together all previous .blocks and .symbols records |
| 1335 | ** together in a union with a common header. The rec_type field of the |
| 1336 | ** header identifies the record type. The rec_flags field currently only |
| 1337 | ** defines auxiliary record lists. |
| 1338 | ** |
| 1339 | ** If a record carries with it a non-null auxiliary record list, its |
| 1340 | ** dst_flag_has_aux_recs flag is set, and each of the records that follow |
| 1341 | ** it are treated as its auxiliary records, until the end of the compilation |
| 1342 | ** unit or scope is reached, or until an auxiliary record with its |
| 1343 | ** dst_flag_last_aux_rec flag set is reached. |
| 1344 | */ |
| 1345 | |
| 1346 | typedef enum |
| 1347 | { |
| 1348 | dst_flag_has_aux_recs, |
| 1349 | dst_flag_last_aux_rec, |
| 1350 | dst_rec_flag_END_OF_ENUM |
| 1351 | } |
| 1352 | dst_rec_flags_t; |
| 1353 | |
| 1354 | typedef struct |
| 1355 | { |
| 1356 | dst_rec_type_t rec_type:8; /* record type */ |
| 1357 | int rec_flags:8; /* mask of dst_rec_flags_t */ |
| 1358 | union /* switched on rec_type field above */ |
| 1359 | { |
| 1360 | /* dst_typ_pad requires no additional fields */ |
| 1361 | dst_rec_comp_unit_t comp_unit_; |
| 1362 | dst_rec_section_tab_t section_tab_; |
| 1363 | dst_rec_file_tab_t file_tab_; |
| 1364 | dst_rec_block_t block_; |
| 1365 | dst_rec_var_t var_; |
| 1366 | dst_rec_pointer_t pointer_; |
| 1367 | dst_rec_array_t array_; |
| 1368 | dst_rec_subrange_t subrange_; |
| 1369 | dst_rec_set_t set_; |
| 1370 | dst_rec_implicit_enum_t implicit_enum_; |
| 1371 | dst_rec_explicit_enum_t explicit_enum_; |
| 1372 | /* dst_typ_short_{rec,union} are represented by 'rec' (below) */ |
| 1373 | dst_rec_file_t file_; |
| 1374 | dst_rec_offset_t offset_; |
| 1375 | dst_rec_alias_t alias_; |
| 1376 | dst_rec_signature_t signature_; |
| 1377 | dst_rec_old_label_t old_label_; |
| 1378 | dst_rec_scope_t scope_; |
| 1379 | /* dst_typ_end_scope requires no additional fields */ |
| 1380 | dst_rec_string_tab_t string_tab_; |
| 1381 | /* dst_typ_global_name_tab is represented by 'string_tab' (above) */ |
| 1382 | dst_rec_forward_t forward_; |
| 1383 | dst_rec_aux_size_t aux_size_; |
| 1384 | dst_rec_aux_align_t aux_align_; |
| 1385 | dst_rec_aux_field_size_t aux_field_size_; |
| 1386 | dst_rec_aux_field_off_t aux_field_off_; |
| 1387 | dst_rec_aux_field_align_t aux_field_align_; |
| 1388 | dst_rec_aux_qual_t aux_qual_; |
| 1389 | dst_rec_aux_var_bound_t aux_var_bound_; |
| 1390 | dst_rec_extension_t extension_; |
| 1391 | dst_rec_string_t string_; |
| 1392 | dst_rec_const_t const_; |
| 1393 | /* dst_typ_reference is represented by 'pointer' (above) */ |
| 1394 | dst_rec_record_t record_; |
| 1395 | /* dst_typ_union is represented by 'record' (above) */ |
| 1396 | dst_rec_aux_type_deriv_t aux_type_deriv_; |
| 1397 | /* dst_typ_locpool is represented by 'string_tab' (above) */ |
| 1398 | dst_rec_variable_t variable_; |
| 1399 | dst_rec_label_t label_; |
| 1400 | dst_rec_entry_t entry_; |
| 1401 | dst_rec_aux_lifetime_t aux_lifetime_; |
| 1402 | dst_rec_aux_ptr_base_t aux_ptr_base_; |
| 1403 | dst_rec_aux_src_range_t aux_src_range_; |
| 1404 | dst_rec_aux_reg_val_t aux_reg_val_; |
| 1405 | dst_rec_name_tab_t aux_unit_names_; |
| 1406 | dst_rec_sect_info_tab_t aux_sect_info_; |
| 1407 | } |
| 1408 | rec_data ALIGNED1; |
| 1409 | } |
| 1410 | dst_rec_t, *dst_rec_ptr_t; |
| 1411 | |
| 1412 | |
| 1413 | /*===============================================*/ |
| 1414 | /*========== .lines SECTION DEFINITIONS =========*/ |
| 1415 | /*===============================================*/ |
| 1416 | /* |
| 1417 | The .lines section contains a sequence of line number tables. There is no |
| 1418 | record structure within the section. The start of the table for a routine |
| 1419 | is pointed to by the block record, and the end of the table is signaled by |
| 1420 | an escape code. |
| 1421 | |
| 1422 | A line number table is a sequence of bytes. The default entry contains a line |
| 1423 | number delta (-7..+7) in the high 4 bits and a pc delta (0..15) in the low 4 |
| 1424 | bits. Special cases, including when one or both of the values is too large |
| 1425 | to fit in 4 bits and other special cases are handled through escape entries. |
| 1426 | Escape entries are identified by the value 0x8 in the high 4 bits. The low 4 |
| 1427 | bits are occupied by a function code. Some escape entries are followed by |
| 1428 | additional arguments, which may be bytes, words, or longwords. This data is |
| 1429 | not aligned. |
| 1430 | |
| 1431 | The initial PC offset, file number and line number are zero. Normally, the |
| 1432 | table begins with a dst_ln_file escape which establishes the initial file |
| 1433 | and line number. All PC deltas are unsigned (thus the table is ordered by |
| 1434 | increasing PC); line number deltas are signed. The table ends with a |
| 1435 | dst_ln_end escape, which is followed by a final table entry whose PC delta |
| 1436 | gives the code size of the last statement. |
| 1437 | |
| 1438 | Escape Semantic |
| 1439 | --------- ------------------------------------------------------------ |
| 1440 | file Changes file state. The current source file remains constant |
| 1441 | until another file escape. Though the line number state is |
| 1442 | also updated by a file escape, a file escape does NOT |
| 1443 | constitute a line table entry. |
| 1444 | |
| 1445 | statement Alters the statement number of the next table entry. By |
| 1446 | default, all table entries refer to the first statement on a |
| 1447 | line. Statement number one is the second statement, and so on. |
| 1448 | |
| 1449 | entry Identifies the next table entry as the position of an entry |
| 1450 | point for the current block. The PC position should follow |
| 1451 | any procedure prologue code. An argument specifies the entry |
| 1452 | number, which is keyed to the entry number of the corresponding |
| 1453 | .symbols ENTRY record. |
| 1454 | |
| 1455 | exit Identifies the next table entry as the last position within |
| 1456 | the current block before a procedure epiloge and subsequent |
| 1457 | procedure exit. |
| 1458 | |
| 1459 | gap By default, the executable code corresponding to a table entry |
| 1460 | is assumed to extend to the beginning of the next table entry. |
| 1461 | If this is not the case--there is a "hole" in the table--then |
| 1462 | a gap escape should follow the first table entry to specify |
| 1463 | where the code for that entry ends. |
| 1464 | */ |
| 1465 | |
| 1466 | #define dst_ln_escape_flag -8 |
| 1467 | |
| 1468 | /* |
| 1469 | Escape function codes: |
| 1470 | */ |
| 1471 | typedef enum |
| 1472 | { |
| 1473 | dst_ln_pad, /* pad byte */ |
| 1474 | dst_ln_file, /* file escape. Next 4 bytes are a dst_src_loc_t */ |
| 1475 | dst_ln_dln1_dpc1, /* 1 byte line delta, 1 byte pc delta */ |
| 1476 | dst_ln_dln2_dpc2, /* 2 bytes line delta, 2 bytes pc delta */ |
| 1477 | dst_ln_ln4_pc4, /* 4 bytes ABSOLUTE line number, 4 bytes ABSOLUTE pc */ |
| 1478 | dst_ln_dln1_dpc0, /* 1 byte line delta, pc delta = 0 */ |
| 1479 | dst_ln_ln_off_1, /* statement escape, stmt # = 1 (2nd stmt on line) */ |
| 1480 | dst_ln_ln_off, /* statement escape, stmt # = next byte */ |
| 1481 | dst_ln_entry, /* entry escape, next byte is entry number */ |
| 1482 | dst_ln_exit, /* exit escape */ |
| 1483 | dst_ln_stmt_end, /* gap escape, 4 bytes pc delta */ |
| 1484 | dst_ln_escape_11, /* reserved */ |
| 1485 | dst_ln_escape_12, /* reserved */ |
| 1486 | dst_ln_escape_13, /* reserved */ |
| 1487 | dst_ln_nxt_byte, /* next byte contains the real escape code */ |
| 1488 | dst_ln_end, /* end escape, final entry follows */ |
| 1489 | dst_ln_escape_END_OF_ENUM |
| 1490 | } |
| 1491 | dst_ln_escape_t; |
| 1492 | |
| 1493 | /* |
| 1494 | Line number table entry |
| 1495 | */ |
| 1496 | typedef union |
| 1497 | { |
| 1498 | struct |
| 1499 | { |
| 1500 | unsigned int ln_delta:4; /* 4 bit line number delta */ |
| 1501 | unsigned int pc_delta:4; /* 4 bit pc delta */ |
| 1502 | } |
| 1503 | delta; |
| 1504 | |
| 1505 | struct |
| 1506 | { |
| 1507 | unsigned int esc_flag:4; /* alias for ln_delta */ |
| 1508 | dst_ln_escape_t esc_code:4; /* escape function code */ |
| 1509 | } |
| 1510 | esc; |
| 1511 | |
| 1512 | char sdata; /* signed data byte */ |
| 1513 | unsigned char udata; /* unsigned data byte */ |
| 1514 | } |
| 1515 | dst_ln_entry_t, |
| 1516 | *dst_ln_entry_ptr_t, |
| 1517 | dst_ln_table_t[dst_dummy_array_size]; |
| 1518 | |
| 1519 | /* The following macro will extract the ln_delta field as a signed value: |
| 1520 | */ |
| 1521 | #define dst_ln_ln_delta(ln_rec) \ |
| 1522 | ( ((short) ((ln_rec).delta.ln_delta << 12)) >> 12 ) |
| 1523 | |
| 1524 | |
| 1525 | |
| 1526 | |
| 1527 | typedef struct dst_sec_struct |
| 1528 | { |
| 1529 | char *buffer; |
| 1530 | long position; |
| 1531 | long size; |
| 1532 | long base; |
| 1533 | } |
| 1534 | dst_sec; |
| 1535 | |
| 1536 | |
| 1537 | /* Macros for access to the data */ |
| 1538 | |
| 1539 | #define DST_comp_unit(x) ((x)->rec_data.comp_unit_) |
| 1540 | #define DST_section_tab(x) ((x)->rec_data.section_tab_) |
| 1541 | #define DST_file_tab(x) ((x)->rec_data.file_tab_) |
| 1542 | #define DST_block(x) ((x)->rec_data.block_) |
| 1543 | #define DST_var(x) ((x)->rec_data.var_) |
| 1544 | #define DST_pointer(x) ((x)->rec_data.pointer_) |
| 1545 | #define DST_array(x) ((x)->rec_data.array_) |
| 1546 | #define DST_subrange(x) ((x)->rec_data.subrange_) |
| 1547 | #define DST_set(x) ((x)->rec_data.set_) |
| 1548 | #define DST_implicit_enum(x) ((x)->rec_data.implicit_enum_) |
| 1549 | #define DST_explicit_enum(x) ((x)->rec_data.explicit_enum_) |
| 1550 | #define DST_short_rec(x) ((x)->rec_data.record_) |
| 1551 | #define DST_short_union(x) ((x)->rec_data.record_) |
| 1552 | #define DST_file(x) ((x)->rec_data.file_) |
| 1553 | #define DST_offset(x) ((x)->rec_data.offset_) |
| 1554 | #define DST_alias(x) ((x)->rec_data.alias_) |
| 1555 | #define DST_signature(x) ((x)->rec_data.signature_) |
| 1556 | #define DST_old_label(x) ((x)->rec_data.old_label_) |
| 1557 | #define DST_scope(x) ((x)->rec_data.scope_) |
| 1558 | #define DST_string_tab(x) ((x)->rec_data.string_tab_) |
| 1559 | #define DST_global_name_tab(x) ((x)->rec_data.string_tab_) |
| 1560 | #define DST_forward(x) ((x)->rec_data.forward_) |
| 1561 | #define DST_aux_size(x) ((x)->rec_data.aux_size_) |
| 1562 | #define DST_aux_align(x) ((x)->rec_data.aux_align_) |
| 1563 | #define DST_aux_field_size(x) ((x)->rec_data.aux_field_size_) |
| 1564 | #define DST_aux_field_off(x) ((x)->rec_data.aux_field_off_) |
| 1565 | #define DST_aux_field_align(x) ((x)->rec_data.aux_field_align_) |
| 1566 | #define DST_aux_qual(x) ((x)->rec_data.aux_qual_) |
| 1567 | #define DST_aux_var_bound(x) ((x)->rec_data.aux_var_bound_) |
| 1568 | #define DST_extension(x) ((x)->rec_data.extension_) |
| 1569 | #define DST_string(x) ((x)->rec_data.string_) |
| 1570 | #define DST_const(x) ((x)->rec_data.const_) |
| 1571 | #define DST_reference(x) ((x)->rec_data.pointer_) |
| 1572 | #define DST_record(x) ((x)->rec_data.record_) |
| 1573 | #define DST_union(x) ((x)->rec_data.record_) |
| 1574 | #define DST_aux_type_deriv(x) ((x)->rec_data.aux_type_deriv_) |
| 1575 | #define DST_locpool(x) ((x)->rec_data.string_tab_) |
| 1576 | #define DST_variable(x) ((x)->rec_data.variable_) |
| 1577 | #define DST_label(x) ((x)->rec_data.label_) |
| 1578 | #define DST_entry(x) ((x)->rec_data.entry_) |
| 1579 | #define DST_aux_lifetime(x) ((x)->rec_data.aux_lifetime_) |
| 1580 | #define DST_aux_ptr_base(x) ((x)->rec_data.aux_ptr_base_) |
| 1581 | #define DST_aux_src_range(x) ((x)->rec_data.aux_src_range_) |
| 1582 | #define DST_aux_reg_val(x) ((x)->rec_data.aux_reg_val_) |
| 1583 | #define DST_aux_unit_names(x) ((x)->rec_data.aux_unit_names_) |
| 1584 | #define DST_aux_sect_info(x) ((x)->rec_data.aux_sect_info_) |
| 1585 | |
| 1586 | |
| 1587 | /* |
| 1588 | * Type codes for loc strings. I'm not entirely certain about all of |
| 1589 | * these, but they seem to work. |
| 1590 | * troy@cbme.unsw.EDU.AU |
| 1591 | * If you find a variable whose location can't be decoded, you should |
| 1592 | * find out it's code using "dstdump -s filename". It will record an |
| 1593 | * entry for the variable, and give a text representation of what |
| 1594 | * the locstring means. Before that explaination there will be a |
| 1595 | * number. In the LOCSTRING table, that number will appear before |
| 1596 | * the start of the location string. Location string codes are |
| 1597 | * five bit codes with a 3 bit argument. Check the high 5 bits of |
| 1598 | * the one byte code, and figure out where it goes in here. |
| 1599 | * Then figure out exactly what the meaning is and code it in |
| 1600 | * dstread.c |
| 1601 | * |
| 1602 | * Note that ranged locs mean that the variable is in different locations |
| 1603 | * depending on the current PC. We ignore these because (a) gcc can't handle |
| 1604 | * them, and (b), If you don't use high levels of optimisation they won't |
| 1605 | * occur. |
| 1606 | */ |
| 1607 | typedef enum |
| 1608 | { |
| 1609 | dst_lsc_end, /* End of string */ |
| 1610 | dst_lsc_indirect, /* Indirect through previous. Arg == 6 */ |
| 1611 | /* Or register ax (x=arg) */ |
| 1612 | dst_lsc_dreg, /* register dx (x=arg) */ |
| 1613 | dst_lsc_03, |
| 1614 | dst_lsc_section, /* Section (arg+1) */ |
| 1615 | dst_lsc_05, |
| 1616 | dst_lsc_06, |
| 1617 | dst_lsc_add, /* Add (arg+1)*2 */ |
| 1618 | dst_lsc_sub, /* Subtract (arg+1)*2 */ |
| 1619 | dst_lsc_09, |
| 1620 | dst_lsc_0a, |
| 1621 | dst_lsc_sec_byte, /* Section of next byte+1 */ |
| 1622 | dst_lsc_add_byte, /* Add next byte (arg == 5) or next word |
| 1623 | * (arg == 6) |
| 1624 | */ |
| 1625 | dst_lsc_sub_byte, /* Subtract next byte. (arg == 1) or next |
| 1626 | * word (arg == 6 ?) |
| 1627 | */ |
| 1628 | dst_lsc_sbreg, /* Stack base register (frame pointer). Arg==0 */ |
| 1629 | dst_lsc_0f, |
| 1630 | dst_lsc_ranged, /* location is pc dependent */ |
| 1631 | dst_lsc_11, |
| 1632 | dst_lsc_12, |
| 1633 | dst_lsc_13, |
| 1634 | dst_lsc_14, |
| 1635 | dst_lsc_15, |
| 1636 | dst_lsc_16, |
| 1637 | dst_lsc_17, |
| 1638 | dst_lsc_18, |
| 1639 | dst_lsc_19, |
| 1640 | dst_lsc_1a, |
| 1641 | dst_lsc_1b, |
| 1642 | dst_lsc_1c, |
| 1643 | dst_lsc_1d, |
| 1644 | dst_lsc_1e, |
| 1645 | dst_lsc_1f |
| 1646 | } |
| 1647 | dst_loc_string_code_t; |
| 1648 | |
| 1649 | /* If the following occurs after an addition/subtraction, that addition |
| 1650 | * or subtraction should be multiplied by 256. It's a complete byte, not |
| 1651 | * a code. |
| 1652 | */ |
| 1653 | |
| 1654 | #define dst_multiply_256 ((char) 0x73) |
| 1655 | |
| 1656 | typedef struct |
| 1657 | { |
| 1658 | char code:5; |
| 1659 | char arg:3; |
| 1660 | } |
| 1661 | dst_loc_header_t ALIGNED1; |
| 1662 | |
| 1663 | typedef union |
| 1664 | { |
| 1665 | dst_loc_header_t header; |
| 1666 | char data; |
| 1667 | } |
| 1668 | dst_loc_entry_t ALIGNED1; |
| 1669 | |
| 1670 | #undef ALIGNED1 |
| 1671 | #endif /* apollo_dst_h */ |