projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| a3f97cbb JW |
1 | /* Output Dwarf2 format symbol table information from the GNU C compiler. |
| 2 | Copyright (C) 1992, 1993, 1995, 1996 Free Software Foundation, Inc. | |
| 3 | Contributed by Gary Funck (gary@intrepid.com). Derived from the | |
| 4 | DWARF 1 implementation written by Ron Guilmette (rfg@monkeys.com). | |
| 5 | ||
| 6 | This file is part of GNU CC. | |
| 7 | ||
| 8 | GNU CC is free software; you can redistribute it and/or modify | |
| 9 | it under the terms of the GNU General Public License as published by | |
| 10 | the Free Software Foundation; either version 2, or (at your option) | |
| 11 | any later version. | |
| 12 | ||
| 13 | GNU CC is distributed in the hope that it will be useful, | |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | GNU General Public License for more details. | |
| 17 | ||
| 18 | You should have received a copy of the GNU General Public License | |
| 19 | along with GNU CC; see the file COPYING. If not, write to | |
| 20 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 21 | ||
| 22 | #include "config.h" | |
| 23 | ||
| 9a666dda | 24 | #ifdef DWARF2_DEBUGGING_INFO |
| a3f97cbb JW |
25 | #include <stdio.h> |
| 26 | #include "dwarf2.h" | |
| 27 | #include "tree.h" | |
| 28 | #include "flags.h" | |
| 29 | #include "rtl.h" | |
| 30 | #include "hard-reg-set.h" | |
| 31 | #include "regs.h" | |
| 32 | #include "insn-config.h" | |
| 33 | #include "reload.h" | |
| 34 | #include "output.h" | |
| 35 | #include "defaults.h" | |
| 36 | ||
| 37 | /* #define NDEBUG 1 */ | |
| 38 | #include "assert.h" | |
| 39 | #if defined(DWARF_TIMESTAMPS) | |
| 40 | #if defined(POSIX) | |
| 41 | #include <time.h> | |
| 42 | #else /* !defined(POSIX) */ | |
| 43 | #include <sys/types.h> | |
| 44 | #if defined(__STDC__) | |
| 45 | extern time_t time (time_t *); | |
| 46 | #else /* !defined(__STDC__) */ | |
| 47 | extern time_t time (); | |
| 48 | #endif /* !defined(__STDC__) */ | |
| 49 | #endif /* !defined(POSIX) */ | |
| 50 | #endif /* defined(DWARF_TIMESTAMPS) */ | |
| 51 | ||
| 52 | extern char *getpwd (); | |
| 53 | extern char *index (); | |
| 54 | extern char *rindex (); | |
| 55 | ||
| 56 | /* IMPORTANT NOTE: Please see the file README.DWARF for important details | |
| 57 | regarding the GNU implementation of DWARF. */ | |
| 58 | ||
| 59 | /* NOTE: In the comments in this file, many references are made to | |
| 60 | "Debugging Information Entries". This term is abbreviated as `DIE' | |
| 61 | throughout the remainder of this file. */ | |
| 62 | ||
| 63 | /* NOTE: The implementation of C++ support is unfinished. */ | |
| 64 | ||
| 65 | #if defined(__GNUC__) && (NDEBUG == 1) | |
| 66 | #define inline static inline | |
| 67 | #else | |
| 68 | #define inline static | |
| 69 | #endif | |
| 70 | ||
| 71 | ||
| 72 | /* An internal representation of the DWARF output is built, and then | |
| 73 | walked to generate the DWARF debugging info. The walk of the internal | |
| 74 | representation is done after the entire program has been compiled. | |
| 75 | The types below are used to describe the internal representation. */ | |
| 76 | ||
| 77 | /* Each DIE may have a series of attribute/value pairs. Values | |
| 78 | can take on several forms. The forms that are used in this | |
| 79 | impelementation are listed below. */ | |
| 80 | typedef enum | |
| 81 | { | |
| 82 | dw_val_class_addr, | |
| 83 | dw_val_class_loc, | |
| 84 | dw_val_class_const, | |
| 85 | dw_val_class_unsigned_const, | |
| 86 | dw_val_class_double_const, | |
| 87 | dw_val_class_flag, | |
| 88 | dw_val_class_die_ref, | |
| 89 | dw_val_class_fde_ref, | |
| 90 | dw_val_class_lbl_id, | |
| 91 | dw_val_class_section_offset, | |
| 92 | dw_val_class_str | |
| 93 | } | |
| 94 | dw_val_class; | |
| 95 | ||
| 96 | /* Various DIE's use offsets relative to the beginning of the | |
| 97 | .debug_info section to refer to each other. */ | |
| 98 | typedef long int dw_offset; | |
| 99 | ||
| 100 | /* Define typedefs here to avoid circular dependencies. */ | |
| 101 | typedef struct die_struct *dw_die_ref; | |
| 102 | typedef struct dw_attr_struct *dw_attr_ref; | |
| 103 | typedef struct dw_val_struct *dw_val_ref; | |
| 104 | typedef struct dw_line_info_struct *dw_line_info_ref; | |
| e90b62db | 105 | typedef struct dw_separate_line_info_struct *dw_separate_line_info_ref; |
| a3f97cbb JW |
106 | typedef struct dw_loc_descr_struct *dw_loc_descr_ref; |
| 107 | typedef struct dw_cfi_struct *dw_cfi_ref; | |
| 108 | typedef struct dw_fde_struct *dw_fde_ref; | |
| 109 | typedef union dw_cfi_oprnd_struct *dw_cfi_oprnd_ref; | |
| d291dd49 JM |
110 | typedef struct pubname_struct *pubname_ref; |
| 111 | typedef dw_die_ref *arange_ref; | |
| a3f97cbb JW |
112 | |
| 113 | /* Describe a double word constant value. */ | |
| 114 | typedef struct dw_double_const_struct | |
| 115 | { | |
| 116 | unsigned long dw_dbl_hi; | |
| 117 | unsigned long dw_dbl_low; | |
| 118 | } | |
| 119 | dw_dbl_const; | |
| 120 | ||
| 121 | /* Each entry in the line_info_table maintains the file and | |
| 122 | line nuber associated with the label generated for that | |
| 123 | entry. The label gives the PC value associated with | |
| 124 | the line number entry. */ | |
| 125 | typedef struct dw_line_info_struct | |
| 126 | { | |
| 127 | unsigned long dw_file_num; | |
| 128 | unsigned long dw_line_num; | |
| 129 | } | |
| 130 | dw_line_info_entry; | |
| 131 | ||
| e90b62db JM |
132 | /* Line information for functions in separate sections; each one gets its |
| 133 | own sequence. */ | |
| 134 | typedef struct dw_separate_line_info_struct | |
| 135 | { | |
| 136 | unsigned long dw_file_num; | |
| 137 | unsigned long dw_line_num; | |
| 138 | unsigned long function; | |
| 139 | } | |
| 140 | dw_separate_line_info_entry; | |
| 141 | ||
| a3f97cbb JW |
142 | /* The dw_val_node describes an attibute's value, as it is |
| 143 | represnted internally. */ | |
| 144 | typedef struct dw_val_struct | |
| 145 | { | |
| 146 | dw_val_class val_class; | |
| 147 | union | |
| 148 | { | |
| 149 | char *val_addr; | |
| 150 | dw_loc_descr_ref val_loc; | |
| 151 | long int val_int; | |
| 152 | long unsigned val_unsigned; | |
| 153 | dw_dbl_const val_dbl_const; | |
| 154 | dw_die_ref val_die_ref; | |
| 155 | unsigned val_fde_index; | |
| 156 | char *val_str; | |
| 157 | char *val_lbl_id; | |
| 158 | char *val_section; | |
| 159 | unsigned char val_flag; | |
| 160 | } | |
| 161 | v; | |
| 162 | } | |
| 163 | dw_val_node; | |
| 164 | ||
| 165 | /* Locations in memory are described using a sequence of stack machine | |
| 166 | operations. */ | |
| 167 | typedef struct dw_loc_descr_struct | |
| 168 | { | |
| 169 | dw_loc_descr_ref dw_loc_next; | |
| 170 | enum dwarf_location_atom dw_loc_opc; | |
| 171 | dw_val_node dw_loc_oprnd1; | |
| 172 | dw_val_node dw_loc_oprnd2; | |
| 173 | } | |
| 174 | dw_loc_descr_node; | |
| 175 | ||
| 176 | /* Each DIE attribute has a field specifying the attribute kind, | |
| 177 | a link to the next attribute in the chain, and an attribute value. | |
| 178 | Attributes are typically linked below the DIE they modify. */ | |
| 179 | typedef struct dw_attr_struct | |
| 180 | { | |
| 181 | enum dwarf_attribute dw_attr; | |
| 182 | dw_attr_ref dw_attr_next; | |
| 183 | dw_val_node dw_attr_val; | |
| 184 | } | |
| 185 | dw_attr_node; | |
| 186 | ||
| 187 | /* Call frames are described using a sequence of Call Frame | |
| 188 | Information instructions. The register number, offset | |
| 189 | and address fields are provided as possible operands; | |
| 190 | their use is selected by the opcode field. */ | |
| 191 | typedef union dw_cfi_oprnd_struct | |
| 192 | { | |
| 193 | unsigned long dw_cfi_reg_num; | |
| 194 | long int dw_cfi_offset; | |
| 195 | char *dw_cfi_addr; | |
| 196 | } | |
| 197 | dw_cfi_oprnd; | |
| 198 | ||
| 199 | typedef struct dw_cfi_struct | |
| 200 | { | |
| 201 | dw_cfi_ref dw_cfi_next; | |
| 202 | enum dwarf_call_frame_info dw_cfi_opc; | |
| 203 | dw_cfi_oprnd dw_cfi_oprnd1; | |
| 204 | dw_cfi_oprnd dw_cfi_oprnd2; | |
| 205 | } | |
| 206 | dw_cfi_node; | |
| 207 | ||
| 208 | /* All call frame descriptions (FDE's) in the GCC generated DWARF | |
| 4b674448 | 209 | refer to a single Common Information Entry (CIE), defined at |
| a3f97cbb JW |
210 | the beginning of the .debug_frame section. This used of a single |
| 211 | CIE obviates the need to keep track of multiple CIE's | |
| 212 | in the DWARF generation routines below. */ | |
| 213 | typedef struct dw_fde_struct | |
| 214 | { | |
| 215 | unsigned long dw_fde_offset; | |
| 216 | char *dw_fde_begin; | |
| 217 | char *dw_fde_end_prolog; | |
| 218 | char *dw_fde_begin_epilogue; | |
| 219 | char *dw_fde_end; | |
| 220 | dw_cfi_ref dw_fde_cfi; | |
| 221 | } | |
| 222 | dw_fde_node; | |
| 223 | ||
| 224 | /* The Debugging Information Entry (DIE) structure */ | |
| 225 | typedef struct die_struct | |
| 226 | { | |
| 227 | enum dwarf_tag die_tag; | |
| 228 | dw_attr_ref die_attr; | |
| 229 | dw_attr_ref die_attr_last; | |
| 230 | dw_die_ref die_parent; | |
| 231 | dw_die_ref die_child; | |
| 232 | dw_die_ref die_child_last; | |
| 233 | dw_die_ref die_sib; | |
| 234 | dw_offset die_offset; | |
| 235 | unsigned long die_abbrev; | |
| 236 | } | |
| 237 | die_node; | |
| 238 | ||
| d291dd49 JM |
239 | /* The pubname structure */ |
| 240 | typedef struct pubname_struct | |
| 241 | { | |
| 242 | dw_die_ref die; | |
| 243 | char * name; | |
| 244 | } | |
| 245 | pubname_entry; | |
| 246 | ||
| a3f97cbb JW |
247 | /* How to start an assembler comment. */ |
| 248 | #ifndef ASM_COMMENT_START | |
| 249 | #define ASM_COMMENT_START ";#" | |
| 250 | #endif | |
| 251 | ||
| 5c90448c JM |
252 | /* Define a macro which returns non-zero for a TYPE_DECL which was |
| 253 | implicitly generated for a tagged type. | |
| 254 | ||
| 255 | Note that unlike the gcc front end (which generates a NULL named | |
| 256 | TYPE_DECL node for each complete tagged type, each array type, and | |
| 257 | each function type node created) the g++ front end generates a | |
| 258 | _named_ TYPE_DECL node for each tagged type node created. | |
| 259 | These TYPE_DECLs have DECL_ARTIFICIAL set, so we know not to | |
| 260 | generate a DW_TAG_typedef DIE for them. */ | |
| 261 | #define TYPE_DECL_IS_STUB(decl) \ | |
| 262 | (DECL_NAME (decl) == NULL \ | |
| 263 | || (DECL_ARTIFICIAL (decl) \ | |
| 264 | && is_tagged_type (TREE_TYPE (decl)) \ | |
| 265 | && decl == TYPE_STUB_DECL (TREE_TYPE (decl)))) | |
| 266 | ||
| a3f97cbb JW |
267 | /* Information concerning the compilation unit's programming |
| 268 | language, and compiler version. */ | |
| 269 | extern int flag_traditional; | |
| 270 | extern char *version_string; | |
| 271 | extern char *language_string; | |
| 272 | ||
| 273 | /* Maximum size (in bytes) of an artificially generated label. */ | |
| 274 | #define MAX_ARTIFICIAL_LABEL_BYTES 30 | |
| 275 | ||
| 276 | /* Make sure we know the sizes of the various types dwarf can describe. These | |
| 277 | are only defaults. If the sizes are different for your target, you should | |
| 278 | override these values by defining the appropriate symbols in your tm.h | |
| 279 | file. */ | |
| 280 | #ifndef CHAR_TYPE_SIZE | |
| 281 | #define CHAR_TYPE_SIZE BITS_PER_UNIT | |
| 282 | #endif | |
| a3f97cbb | 283 | #ifndef PTR_SIZE |
| a9d38797 | 284 | #define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT) |
| a3f97cbb JW |
285 | #endif |
| 286 | ||
| 7e23cb16 JM |
287 | /* The size in bytes of a DWARF field indicating an offset or length |
| 288 | relative to a debug info section, specified to be 4 bytes in the DWARF-2 | |
| 289 | specification. The SGI/MIPS ABI defines it to be the same as PTR_SIZE. */ | |
| 290 | #ifndef DWARF_OFFSET_SIZE | |
| 291 | #define DWARF_OFFSET_SIZE 4 | |
| 292 | #endif | |
| 293 | ||
| 9a666dda JM |
294 | #define DWARF_VERSION 2 |
| 295 | ||
| a3f97cbb | 296 | /* Fixed size portion of the DWARF compilation unit header. */ |
| 7e23cb16 | 297 | #define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) |
| a3f97cbb JW |
298 | |
| 299 | /* Fixed size portion of debugging line information prolog. */ | |
| 300 | #define DWARF_LINE_PROLOG_HEADER_SIZE 5 | |
| 301 | ||
| 302 | /* Fixed size portion of public names info. */ | |
| 7e23cb16 JM |
303 | #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) |
| 304 | ||
| 305 | /* Round SIZE up to the nearest BOUNDARY. */ | |
| 306 | #define DWARF_ROUND(SIZE,BOUNDARY) \ | |
| 307 | (((SIZE) + (BOUNDARY) - 1) & ~((BOUNDARY) - 1)) | |
| a3f97cbb JW |
308 | |
| 309 | /* Fixed size portion of the address range info. */ | |
| 7e23cb16 JM |
310 | #define DWARF_ARANGES_HEADER_SIZE \ |
| 311 | (DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, PTR_SIZE * 2) - DWARF_OFFSET_SIZE) | |
| a3f97cbb | 312 | |
| c8cc5c4a JM |
313 | /* Length of the target-dependent instructions in the |
| 314 | Common Information Entry (CIE). | |
| 315 | ??? This should be computed when the frame info is genericized. */ | |
| 316 | #ifdef MIPS_DEBUGGING_INFO | |
| 317 | #define DWARF_CIE_INSN_SIZE (2*3) | |
| 318 | #endif | |
| 319 | ||
| 320 | #ifndef DWARF_CIE_INSN_SIZE | |
| 321 | #define DWARF_CIE_INSN_SIZE 0 | |
| 322 | #endif | |
| 323 | ||
| 324 | /* Fixed size portion of the CIE (including the length field). */ | |
| 325 | #define DWARF_CIE_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 5 + DWARF_CIE_INSN_SIZE) | |
| a3f97cbb JW |
326 | |
| 327 | /* Fixed size of the Common Information Entry in the call frame | |
| 7e23cb16 JM |
328 | information (.debug_frame) section rounded up to a word boundary. */ |
| 329 | #define DWARF_CIE_SIZE DWARF_ROUND (DWARF_CIE_HEADER_SIZE, PTR_SIZE) | |
| a3f97cbb JW |
330 | |
| 331 | /* Offsets recorded in opcodes are a multiple of this alignment factor. */ | |
| 332 | #define DWARF_CIE_DATA_ALIGNMENT -4 | |
| 333 | ||
| 334 | /* Fixed size portion of the FDE. */ | |
| 7e23cb16 | 335 | #define DWARF_FDE_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2 * PTR_SIZE) |
| a3f97cbb JW |
336 | |
| 337 | /* Define the architecture-dependent minimum instruction length (in bytes). | |
| 338 | In this implementation of DWARF, this field is used for information | |
| 339 | purposes only. Since GCC generates assembly language, we have | |
| 340 | no a priori knowledge of how many instruction bytes are generated | |
| 341 | for each source line, and therefore can use only the DW_LNE_set_address | |
| 342 | and DW_LNS_fixed_advance_pc line information commands. */ | |
| 343 | #ifndef DWARF_LINE_MIN_INSTR_LENGTH | |
| 344 | #define DWARF_LINE_MIN_INSTR_LENGTH 4 | |
| 345 | #endif | |
| 346 | ||
| 347 | /* Minimum line offset in a special line info. opcode. | |
| 348 | This value was chosen to give a reasonable range of values. */ | |
| 349 | #define DWARF_LINE_BASE -10 | |
| 350 | ||
| 351 | /* First special line opcde - leave room for the standard opcodes. */ | |
| 352 | #define DWARF_LINE_OPCODE_BASE 10 | |
| 353 | ||
| 354 | /* Range of line offsets in a special line info. opcode. */ | |
| 355 | #define DWARF_LINE_RANGE (254-DWARF_LINE_OPCODE_BASE+1) | |
| 356 | ||
| 357 | /* Flag that indicates the initial value of the is_stmt_start flag. | |
| 358 | In the present implementation, we do not mark any lines as | |
| 359 | the beginning of a source statement, because that information | |
| 360 | is not made available by the GCC front-end. */ | |
| 361 | #define DWARF_LINE_DEFAULT_IS_STMT_START 1 | |
| 362 | ||
| 363 | /* This location is used by calc_die_sizes() to keep track | |
| 364 | the offset of each DIE within the .debug_info section. */ | |
| 365 | static unsigned long next_die_offset; | |
| 366 | ||
| 367 | /* This location is used by calc_fde_sizes() to keep track | |
| 368 | the offset of each FDE within the .debug_frame section. */ | |
| 369 | static unsigned long next_fde_offset; | |
| 370 | ||
| 371 | /* Record the root of the DIE's built for the current compilation unit. */ | |
| 372 | dw_die_ref comp_unit_die; | |
| 373 | ||
| 374 | /* Pointer to an array of filenames referenced by this compilation unit. */ | |
| 375 | static char **file_table; | |
| 376 | ||
| 377 | /* Total number of entries in the table (i.e. array) pointed to by | |
| 378 | `file_table'. This is the *total* and includes both used and unused | |
| 379 | slots. */ | |
| 380 | static unsigned file_table_allocated; | |
| 381 | ||
| 382 | /* Number of entries in the file_table which are actually in use. */ | |
| 383 | static unsigned file_table_in_use; | |
| 384 | ||
| 385 | /* Size (in elements) of increments by which we may expand the filename | |
| 386 | table. */ | |
| 387 | #define FILE_TABLE_INCREMENT 64 | |
| 388 | ||
| 389 | /* Local pointer to the name of the main input file. Initialized in | |
| 9a666dda | 390 | dwarf2out_init. */ |
| a3f97cbb JW |
391 | static char *primary_filename; |
| 392 | ||
| 393 | /* For Dwarf output, we must assign lexical-blocks id numbers in the order in | |
| 394 | which their beginnings are encountered. We output Dwarf debugging info | |
| 395 | that refers to the beginnings and ends of the ranges of code for each | |
| 396 | lexical block. The labels themselves are generated in final.c, which | |
| 397 | assigns numbers to the blocks in the same way. */ | |
| 398 | static unsigned next_block_number = 2; | |
| 399 | ||
| a3f97cbb JW |
400 | /* A pointer to the base of a list of references to DIE's that describe |
| 401 | types. The table is indexed by TYPE_UID() which is a unique number, | |
| 402 | indentifying each type. */ | |
| 403 | static dw_die_ref *type_die_table; | |
| 404 | ||
| 405 | /* Number of elements currently allocated for type_die_table. */ | |
| 406 | static unsigned type_die_table_allocated; | |
| 407 | ||
| 408 | /* Number of elements in type_die_table currently in use. */ | |
| 409 | static unsigned type_die_table_in_use; | |
| 410 | ||
| 411 | /* Size (in elements) of increments by which we may expand the | |
| 412 | type_die_table. */ | |
| 413 | #define TYPE_DIE_TABLE_INCREMENT 4096 | |
| 414 | ||
| 415 | /* A pointer to the base of a table of references to DIE's that describe | |
| 416 | declarations. The table is indexed by DECL_UID() which is a unique | |
| 417 | number, indentifying each decl. */ | |
| 418 | static dw_die_ref *decl_die_table; | |
| 419 | ||
| 420 | /* Number of elements currently allocated for the decl_die_table. */ | |
| 421 | static unsigned decl_die_table_allocated; | |
| 422 | ||
| 423 | /* Number of elements in decl_die_table currently in use. */ | |
| 424 | static unsigned decl_die_table_in_use; | |
| 425 | ||
| 426 | /* Size (in elements) of increments by which we may expand the | |
| 427 | decl_die_table. */ | |
| 428 | #define DECL_DIE_TABLE_INCREMENT 256 | |
| 429 | ||
| 430 | /* A pointer to the base of a table of references to declaration | |
| 431 | scopes. This table is a display which tracks the nesting | |
| 432 | of declaration scopes at the current scope and containing | |
| 433 | scopes. This table is used to find the proper place to | |
| 434 | define type declaration DIE's. */ | |
| 435 | static tree *decl_scope_table; | |
| 436 | ||
| 437 | /* Number of elements currently allocated for the decl_scope_table. */ | |
| 438 | static unsigned decl_scope_table_allocated; | |
| 439 | ||
| 440 | /* Current level of nesting of declataion scopes. */ | |
| 441 | static unsigned decl_scope_depth; | |
| 442 | ||
| 443 | /* Size (in elements) of increments by which we may expand the | |
| 444 | decl_scope_table. */ | |
| 445 | #define DECL_SCOPE_TABLE_INCREMENT 64 | |
| 446 | ||
| 447 | /* A pointer to the base of a list of references to DIE's that | |
| 448 | are uniquely identified by their tag, presence/absence of | |
| 449 | children DIE's, and list of attribute/value pairs. */ | |
| 450 | static dw_die_ref *abbrev_die_table; | |
| 451 | ||
| 452 | /* Number of elements currently allocated for abbrev_die_table. */ | |
| 453 | static unsigned abbrev_die_table_allocated; | |
| 454 | ||
| 455 | /* Number of elements in type_die_table currently in use. */ | |
| 456 | static unsigned abbrev_die_table_in_use; | |
| 457 | ||
| 458 | /* Size (in elements) of increments by which we may expand the | |
| 459 | abbrev_die_table. */ | |
| 460 | #define ABBREV_DIE_TABLE_INCREMENT 256 | |
| 461 | ||
| 462 | /* A pointer to the base of a table that contains line information | |
| e90b62db | 463 | for each source code line in .text in the compilation unit. */ |
| a3f97cbb JW |
464 | static dw_line_info_ref line_info_table; |
| 465 | ||
| 466 | /* Number of elements currently allocated for line_info_table. */ | |
| 467 | static unsigned line_info_table_allocated; | |
| 468 | ||
| e90b62db JM |
469 | /* Number of elements in separate_line_info_table currently in use. */ |
| 470 | static unsigned separate_line_info_table_in_use; | |
| 471 | ||
| 472 | /* A pointer to the base of a table that contains line information | |
| 473 | for each source code line outside of .text in the compilation unit. */ | |
| 474 | static dw_separate_line_info_ref separate_line_info_table; | |
| 475 | ||
| 476 | /* Number of elements currently allocated for separate_line_info_table. */ | |
| 477 | static unsigned separate_line_info_table_allocated; | |
| 478 | ||
| a3f97cbb JW |
479 | /* Number of elements in line_info_table currently in use. */ |
| 480 | static unsigned line_info_table_in_use; | |
| 481 | ||
| 482 | /* Size (in elements) of increments by which we may expand the | |
| 483 | line_info_table. */ | |
| 484 | #define LINE_INFO_TABLE_INCREMENT 1024 | |
| 485 | ||
| a3f97cbb JW |
486 | /* A pointer to the base of a table that contains frame description |
| 487 | information for each routine. */ | |
| 488 | static dw_fde_ref fde_table; | |
| 489 | ||
| 490 | /* Number of elements currently allocated for fde_table. */ | |
| 491 | static unsigned fde_table_allocated; | |
| 492 | ||
| 493 | /* Number of elements in fde_table currently in use. */ | |
| 494 | static unsigned fde_table_in_use; | |
| 495 | ||
| 496 | /* Size (in elements) of increments by which we may expand the | |
| 497 | fde_table. */ | |
| 498 | #define FDE_TABLE_INCREMENT 256 | |
| 499 | ||
| d291dd49 JM |
500 | /* A pointer to the base of a table that contains a list of publicly |
| 501 | accessible names. */ | |
| 502 | static pubname_ref pubname_table; | |
| 503 | ||
| 504 | /* Number of elements currently allocated for pubname_table. */ | |
| 505 | static unsigned pubname_table_allocated; | |
| 506 | ||
| 507 | /* Number of elements in pubname_table currently in use. */ | |
| 508 | static unsigned pubname_table_in_use; | |
| 509 | ||
| 510 | /* Size (in elements) of increments by which we may expand the | |
| 511 | pubname_table. */ | |
| 512 | #define PUBNAME_TABLE_INCREMENT 64 | |
| 513 | ||
| 514 | /* A pointer to the base of a table that contains a list of publicly | |
| 515 | accessible names. */ | |
| 516 | static arange_ref arange_table; | |
| 517 | ||
| 518 | /* Number of elements currently allocated for arange_table. */ | |
| 519 | static unsigned arange_table_allocated; | |
| 520 | ||
| 521 | /* Number of elements in arange_table currently in use. */ | |
| 522 | static unsigned arange_table_in_use; | |
| 523 | ||
| 524 | /* Size (in elements) of increments by which we may expand the | |
| 525 | arange_table. */ | |
| 526 | #define ARANGE_TABLE_INCREMENT 64 | |
| 527 | ||
| a3f97cbb JW |
528 | /* The number of the current function definition for which debugging |
| 529 | information is being generated. These numbers range from 1 up to the | |
| 530 | maximum number of function definitions contained within the current | |
| 531 | compilation unit. These numbers are used to create unique label id's | |
| 532 | unique to each function definition. */ | |
| 533 | static unsigned current_funcdef_number = 1; | |
| 534 | ||
| 535 | /* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram | |
| 536 | attribute that accelerates the lookup of the FDE associated | |
| 537 | with the subprogram. This variable holds the table index of the FDE | |
| 538 | associated with the current function (body) definition. */ | |
| 539 | static unsigned current_funcdef_fde; | |
| 540 | ||
| 541 | /* Record the size of the frame, so that the DW_AT_frame_base | |
| 542 | attribute can be set properly in gen_subprogram_die. */ | |
| 543 | static long int current_funcdef_frame_size = 0; | |
| 544 | ||
| 7e23cb16 JM |
545 | /* Record whether the function being analyzed contains inlined functions. */ |
| 546 | static int current_function_has_inlines; | |
| 547 | static int comp_unit_has_inlines; | |
| 548 | ||
| a3f97cbb JW |
549 | /* A pointer to the ..._DECL node which we have most recently been working |
| 550 | on. We keep this around just in case something about it looks screwy and | |
| 551 | we want to tell the user what the source coordinates for the actual | |
| 552 | declaration are. */ | |
| 553 | static tree dwarf_last_decl; | |
| 554 | ||
| a3f97cbb JW |
555 | /* Forward declarations for functions defined in this file. */ |
| 556 | static void gen_type_die (); | |
| 557 | static void add_type_attribute (); | |
| 558 | static void decls_for_scope (); | |
| 559 | static void gen_decl_die (); | |
| 560 | static unsigned lookup_filename (); | |
| 7e23cb16 | 561 | static int constant_size PROTO((long unsigned)); |
| f37230f0 | 562 | static enum dwarf_form value_format PROTO((dw_val_ref)); |
| a3f97cbb JW |
563 | |
| 564 | /* Definitions of defaults for assembler-dependent names of various | |
| 565 | pseudo-ops and section names. | |
| 566 | Theses may be overridden in the tm.h file (if necessary) for a particular | |
| 567 | assembler. */ | |
| 568 | #ifndef UNALIGNED_SHORT_ASM_OP | |
| 569 | #define UNALIGNED_SHORT_ASM_OP ".2byte" | |
| 570 | #endif | |
| 571 | #ifndef UNALIGNED_INT_ASM_OP | |
| 572 | #define UNALIGNED_INT_ASM_OP ".4byte" | |
| 573 | #endif | |
| 7e23cb16 JM |
574 | #ifndef UNALIGNED_DOUBLE_INT_ASM_OP |
| 575 | #define UNALIGNED_DOUBLE_INT_ASM_OP ".8byte" | |
| 576 | #endif | |
| a3f97cbb JW |
577 | #ifndef ASM_BYTE_OP |
| 578 | #define ASM_BYTE_OP ".byte" | |
| 579 | #endif | |
| 580 | ||
| 7e23cb16 JM |
581 | #ifndef UNALIGNED_OFFSET_ASM_OP |
| 582 | #define UNALIGNED_OFFSET_ASM_OP \ | |
| 583 | (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
| 584 | #endif | |
| 585 | ||
| 586 | #ifndef UNALIGNED_WORD_ASM_OP | |
| 587 | #define UNALIGNED_WORD_ASM_OP \ | |
| 588 | (PTR_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP) | |
| 589 | #endif | |
| 590 | ||
| 591 | /* Data and reference forms for relocatable data. */ | |
| 592 | #define DW_FORM_data (DWARF_OFFSET_SIZE == 8 ? DW_FORM_data8 : DW_FORM_data4) | |
| 593 | #define DW_FORM_ref (DWARF_OFFSET_SIZE == 8 ? DW_FORM_ref8 : DW_FORM_ref4) | |
| 594 | ||
| a3f97cbb JW |
595 | /* Pseudo-op for defining a new section. */ |
| 596 | #ifndef SECTION_ASM_OP | |
| 597 | #define SECTION_ASM_OP ".section" | |
| 598 | #endif | |
| 599 | ||
| 600 | /* The default format used by the ASM_OUTPUT_SECTION macro (see below) to | |
| 601 | print the SECTION_ASM_OP and the section name. The default here works for | |
| 602 | almost all svr4 assemblers, except for the sparc, where the section name | |
| 603 | must be enclosed in double quotes. (See sparcv4.h). */ | |
| 604 | #ifndef SECTION_FORMAT | |
| 605 | #define SECTION_FORMAT "\t%s\t%s\n" | |
| 606 | #endif | |
| 607 | ||
| 608 | /* Section names used to hold DWARF debugging information. */ | |
| 609 | #ifndef DEBUG_SECTION | |
| 610 | #define DEBUG_SECTION ".debug_info" | |
| 611 | #endif | |
| 612 | #ifndef ABBREV_SECTION | |
| 613 | #define ABBREV_SECTION ".debug_abbrev" | |
| 614 | #endif | |
| 615 | #ifndef ARANGES_SECTION | |
| 616 | #define ARANGES_SECTION ".debug_aranges" | |
| 617 | #endif | |
| 618 | #ifndef DW_MACINFO_SECTION | |
| 619 | #define DW_MACINFO_SECTION ".debug_macinfo" | |
| 620 | #endif | |
| 621 | #ifndef FRAME_SECTION | |
| 622 | #define FRAME_SECTION ".debug_frame" | |
| 623 | #endif | |
| 624 | #ifndef LINE_SECTION | |
| 625 | #define LINE_SECTION ".debug_line" | |
| 626 | #endif | |
| 627 | #ifndef LOC_SECTION | |
| 628 | #define LOC_SECTION ".debug_loc" | |
| 629 | #endif | |
| 630 | #ifndef PUBNAMES_SECTION | |
| 631 | #define PUBNAMES_SECTION ".debug_pubnames" | |
| 632 | #endif | |
| 633 | #ifndef STR_SECTION | |
| 634 | #define STR_SECTION ".debug_str" | |
| 635 | #endif | |
| 636 | ||
| 637 | /* Standerd ELF section names for compiled code and data. */ | |
| 638 | #ifndef TEXT_SECTION | |
| 639 | #define TEXT_SECTION ".text" | |
| 640 | #endif | |
| 641 | #ifndef DATA_SECTION | |
| 642 | #define DATA_SECTION ".data" | |
| 643 | #endif | |
| a3f97cbb JW |
644 | #ifndef BSS_SECTION |
| 645 | #define BSS_SECTION ".bss" | |
| 646 | #endif | |
| 647 | ||
| 648 | ||
| 649 | /* Definitions of defaults for formats and names of various special | |
| 650 | (artificial) labels which may be generated within this file (when the -g | |
| 651 | options is used and DWARF_DEBUGGING_INFO is in effect. | |
| 652 | If necessary, these may be overridden from within the tm.h file, but | |
| 5c90448c JM |
653 | typically, overriding these defaults is unnecessary. */ |
| 654 | ||
| 655 | char text_end_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 656 | ||
| a3f97cbb | 657 | #ifndef TEXT_END_LABEL |
| 5c90448c | 658 | #define TEXT_END_LABEL "Letext" |
| a3f97cbb JW |
659 | #endif |
| 660 | #ifndef DATA_END_LABEL | |
| 5c90448c | 661 | #define DATA_END_LABEL "Ledata" |
| a3f97cbb JW |
662 | #endif |
| 663 | #ifndef BSS_END_LABEL | |
| 5c90448c | 664 | #define BSS_END_LABEL "Lebss" |
| a3f97cbb JW |
665 | #endif |
| 666 | #ifndef INSN_LABEL_FMT | |
| 5c90448c | 667 | #define INSN_LABEL_FMT "LI%u_" |
| a3f97cbb | 668 | #endif |
| 5c90448c JM |
669 | #ifndef BLOCK_BEGIN_LABEL |
| 670 | #define BLOCK_BEGIN_LABEL "LBB" | |
| a3f97cbb | 671 | #endif |
| 5c90448c JM |
672 | #ifndef BLOCK_END_LABEL |
| 673 | #define BLOCK_END_LABEL "LBE" | |
| a3f97cbb | 674 | #endif |
| 5c90448c JM |
675 | #ifndef BODY_BEGIN_LABEL |
| 676 | #define BODY_BEGIN_LABEL "Lbb" | |
| a3f97cbb | 677 | #endif |
| 5c90448c JM |
678 | #ifndef BODY_END_LABEL |
| 679 | #define BODY_END_LABEL "Lbe" | |
| d291dd49 | 680 | #endif |
| 5c90448c JM |
681 | #ifndef FUNC_BEGIN_LABEL |
| 682 | #define FUNC_BEGIN_LABEL "LFB" | |
| a3f97cbb | 683 | #endif |
| 5c90448c JM |
684 | #ifndef FUNC_END_LABEL |
| 685 | #define FUNC_END_LABEL "LFE" | |
| a3f97cbb | 686 | #endif |
| 5c90448c JM |
687 | #ifndef LINE_CODE_LABEL |
| 688 | #define LINE_CODE_LABEL "LM" | |
| e90b62db | 689 | #endif |
| 5c90448c JM |
690 | #ifndef SEPARATE_LINE_CODE_LABEL |
| 691 | #define SEPARATE_LINE_CODE_LABEL "LSM" | |
| a3f97cbb JW |
692 | #endif |
| 693 | ||
| a3f97cbb JW |
694 | /* Definitions of defaults for various types of primitive assembly language |
| 695 | output operations. These may be overridden from within the tm.h file, | |
| 696 | but typically, that is unecessary. */ | |
| 697 | #ifndef ASM_OUTPUT_SECTION | |
| 698 | #define ASM_OUTPUT_SECTION(FILE, SECTION) \ | |
| 699 | fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION) | |
| 700 | #endif | |
| 701 | ||
| 702 | #ifndef ASM_OUTPUT_DWARF_DELTA2 | |
| 703 | #define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \ | |
| 704 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \ | |
| 705 | assemble_name (FILE, LABEL1); \ | |
| 706 | fprintf (FILE, "-"); \ | |
| 707 | assemble_name (FILE, LABEL2); \ | |
| 708 | } while (0) | |
| 709 | #endif | |
| 710 | ||
| 711 | #ifndef ASM_OUTPUT_DWARF_DELTA4 | |
| 712 | #define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \ | |
| 713 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \ | |
| 714 | assemble_name (FILE, LABEL1); \ | |
| 715 | fprintf (FILE, "-"); \ | |
| 716 | assemble_name (FILE, LABEL2); \ | |
| 717 | } while (0) | |
| 718 | #endif | |
| 719 | ||
| 7e23cb16 JM |
720 | #ifndef ASM_OUTPUT_DWARF_DELTA |
| 721 | #define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \ | |
| 722 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
| 723 | assemble_name (FILE, LABEL1); \ | |
| 724 | fprintf (FILE, "-"); \ | |
| 725 | assemble_name (FILE, LABEL2); \ | |
| 726 | } while (0) | |
| 727 | #endif | |
| 728 | ||
| 729 | #ifndef ASM_OUTPUT_DWARF_ADDR_DELTA | |
| 730 | #define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \ | |
| 731 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ | |
| 732 | assemble_name (FILE, LABEL1); \ | |
| 733 | fprintf (FILE, "-"); \ | |
| 734 | assemble_name (FILE, LABEL2); \ | |
| 735 | } while (0) | |
| 736 | #endif | |
| 737 | ||
| a3f97cbb JW |
738 | #ifndef ASM_OUTPUT_DWARF_ADDR |
| 739 | #define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \ | |
| 7e23cb16 | 740 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \ |
| a3f97cbb JW |
741 | assemble_name (FILE, LABEL); \ |
| 742 | } while (0) | |
| 743 | #endif | |
| 744 | ||
| 745 | #ifndef ASM_OUTPUT_DWARF_ADDR_CONST | |
| 746 | #define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,ADDR) \ | |
| 7e23cb16 JM |
747 | fprintf ((FILE), "\t%s\t%s", UNALIGNED_WORD_ASM_OP, (ADDR)) |
| 748 | #endif | |
| 749 | ||
| 750 | #ifndef ASM_OUTPUT_DWARF_OFFSET | |
| 751 | #define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \ | |
| 752 | do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \ | |
| 753 | assemble_name (FILE, LABEL); \ | |
| 754 | } while (0) | |
| a3f97cbb JW |
755 | #endif |
| 756 | ||
| 757 | #ifndef ASM_OUTPUT_DWARF_DATA1 | |
| 758 | #define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \ | |
| 759 | fprintf ((FILE), "\t%s\t0x%x", ASM_BYTE_OP, VALUE) | |
| 760 | #endif | |
| 761 | ||
| 762 | #ifndef ASM_OUTPUT_DWARF_DATA2 | |
| 763 | #define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \ | |
| 764 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) VALUE) | |
| 765 | #endif | |
| 766 | ||
| 767 | #ifndef ASM_OUTPUT_DWARF_DATA4 | |
| 768 | #define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \ | |
| 769 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, (unsigned) VALUE) | |
| 770 | #endif | |
| 771 | ||
| 7e23cb16 JM |
772 | #ifndef ASM_OUTPUT_DWARF_DATA |
| 773 | #define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \ | |
| 774 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP, \ | |
| 775 | (unsigned long) VALUE) | |
| 776 | #endif | |
| 777 | ||
| 778 | #ifndef ASM_OUTPUT_DWARF_ADDR_DATA | |
| 779 | #define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \ | |
| 780 | fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_WORD_ASM_OP, \ | |
| 781 | (unsigned long) VALUE) | |
| 782 | #endif | |
| 783 | ||
| a3f97cbb JW |
784 | #ifndef ASM_OUTPUT_DWARF_DATA8 |
| 785 | #define ASM_OUTPUT_DWARF_DATA8(FILE,HIGH_VALUE,LOW_VALUE) \ | |
| 786 | do { \ | |
| 787 | if (WORDS_BIG_ENDIAN) \ | |
| 788 | { \ | |
| 789 | fprintf ((FILE), "\t%s\t0x%x\n", UNALIGNED_INT_ASM_OP, HIGH_VALUE); \ | |
| 790 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, LOW_VALUE);\ | |
| 791 | } \ | |
| 792 | else \ | |
| 793 | { \ | |
| 794 | fprintf ((FILE), "\t%s\t0x%x\n", UNALIGNED_INT_ASM_OP, LOW_VALUE);\ | |
| 795 | fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, HIGH_VALUE); \ | |
| 796 | } \ | |
| 797 | } while (0) | |
| 798 | #endif | |
| 799 | ||
| 800 | /* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing | |
| 801 | newline is produced. When flag_verbose_asm is asserted, we add commnetary | |
| 802 | at the end of the line, so we must avoid output of a newline here. */ | |
| 803 | #ifndef ASM_OUTPUT_DWARF_STRING | |
| 804 | #define ASM_OUTPUT_DWARF_STRING(FILE,P) \ | |
| 805 | do { \ | |
| 806 | register int slen = strlen(P); \ | |
| 807 | register char *p = (P); \ | |
| 808 | register int i; \ | |
| 809 | fprintf (FILE, "\t.ascii \""); \ | |
| 810 | for (i = 0; i < slen; i++) \ | |
| 811 | { \ | |
| 812 | register int c = p[i]; \ | |
| 813 | if (c == '\"' || c == '\\') \ | |
| 814 | putc ('\\', FILE); \ | |
| 815 | if (c >= ' ' && c < 0177) \ | |
| 816 | putc (c, FILE); \ | |
| 817 | else \ | |
| 818 | { \ | |
| 819 | fprintf (FILE, "\\%o", c); \ | |
| 820 | } \ | |
| 821 | } \ | |
| 822 | fprintf (FILE, "\\0\""); \ | |
| 823 | } \ | |
| 824 | while (0) | |
| 825 | #endif | |
| 826 | ||
| 827 | /* Convert a reference to the assembler name of a C-level name. This | |
| 828 | macro has the same effect as ASM_OUTPUT_LABELREF, but copies to | |
| 829 | a string rather than writing to a file. */ | |
| 830 | #ifndef ASM_NAME_TO_STRING | |
| 831 | #define ASM_NAME_TO_STRING(STR, NAME) \ | |
| 832 | do { \ | |
| 833 | if ((NAME)[0] == '*') \ | |
| 834 | strcpy (STR, NAME+1); \ | |
| 835 | else \ | |
| 836 | strcpy (STR, NAME); \ | |
| 837 | } \ | |
| 838 | while (0) | |
| 839 | #endif | |
| 840 | ||
| c8cc5c4a JM |
841 | /* The DWARF 2 CFA column which tracks the return address. Normally this |
| 842 | is the first column after all of the hard registers. */ | |
| 843 | #ifndef DWARF_FRAME_RETURN_COLUMN | |
| 844 | #define DWARF_FRAME_RETURN_COLUMN FIRST_PSEUDO_REGISTER | |
| 845 | #endif | |
| 846 | ||
| 847 | /* The mapping from gcc register number to DWARF 2 CFA column number. By | |
| 848 | default, we provide columns for all registers after the CFA column. */ | |
| 849 | #ifndef DWARF_FRAME_REGNUM | |
| 850 | #define DWARF_FRAME_REGNUM(REG) (DBX_REGISTER_NUMBER (REG) + 1) | |
| 851 | #endif | |
| a3f97cbb JW |
852 | \f |
| 853 | /************************ general utility functions **************************/ | |
| 854 | ||
| 855 | /* Return a pointer to a copy of the section string name 's' with all | |
| 856 | attributes stripped off. */ | |
| 857 | inline char * | |
| 858 | stripattributes (s) | |
| 859 | register char *s; | |
| 860 | { | |
| 861 | register char *stripped, *p; | |
| 862 | stripped = xstrdup (s); | |
| 863 | p = stripped; | |
| 864 | while (*p && *p != ',') | |
| 865 | p++; | |
| 866 | *p = '\0'; | |
| 867 | return stripped; | |
| 868 | } | |
| 869 | ||
| 870 | /* Convert an integer constant expression into assembler syntax. | |
| 871 | Addition and subtraction are the only arithmetic | |
| 872 | that may appear in these expressions. This is an adaptation | |
| 873 | of output_addr_const() in final.c. Here, the target of the | |
| 874 | conversion is a string buffer. We can't use output_addr_const | |
| 875 | directly, because it writes to a file. */ | |
| 876 | static void | |
| 877 | addr_const_to_string (str, x) | |
| 878 | char *str; | |
| 879 | rtx x; | |
| 880 | { | |
| 881 | char buf1[256]; | |
| 882 | char buf2[256]; | |
| 883 | ||
| 884 | restart: | |
| 885 | str[0] = '\0'; | |
| 886 | switch (GET_CODE (x)) | |
| 887 | { | |
| 888 | case PC: | |
| 889 | if (flag_pic) | |
| 890 | strcat (str, ","); | |
| 891 | else | |
| 892 | abort (); | |
| 893 | break; | |
| 894 | ||
| 895 | case SYMBOL_REF: | |
| 896 | ASM_NAME_TO_STRING (buf1, XSTR (x, 0)); | |
| 897 | strcat (str, buf1); | |
| 898 | break; | |
| 899 | ||
| 900 | case LABEL_REF: | |
| 901 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (XEXP (x, 0))); | |
| 902 | ASM_NAME_TO_STRING (buf2, buf1); | |
| 903 | strcat (str, buf2); | |
| 904 | break; | |
| 905 | ||
| 906 | case CODE_LABEL: | |
| 907 | ASM_GENERATE_INTERNAL_LABEL (buf1, "L", CODE_LABEL_NUMBER (x)); | |
| 908 | ASM_NAME_TO_STRING (buf2, buf1); | |
| 909 | strcat (str, buf2); | |
| 910 | break; | |
| 911 | ||
| 912 | case CONST_INT: | |
| 913 | sprintf (buf1, | |
| 914 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
| 915 | "%d", | |
| 916 | #else | |
| 917 | "%ld", | |
| 918 | #endif | |
| 919 | INTVAL (x)); | |
| 920 | strcat (str, buf1); | |
| 921 | break; | |
| 922 | ||
| 923 | case CONST: | |
| 924 | /* This used to output parentheses around the expression, but that does | |
| 925 | not work on the 386 (either ATT or BSD assembler). */ | |
| 926 | addr_const_to_string (buf1, XEXP (x, 0)); | |
| 927 | strcat (str, buf1); | |
| 928 | break; | |
| 929 | ||
| 930 | case CONST_DOUBLE: | |
| 931 | if (GET_MODE (x) == VOIDmode) | |
| 932 | { | |
| 933 | /* We can use %d if the number is one word and positive. */ | |
| 934 | if (CONST_DOUBLE_HIGH (x)) | |
| 935 | sprintf (buf1, | |
| 936 | #if HOST_BITS_PER_WIDE_INT == 64 | |
| 937 | #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT | |
| 938 | "0x%lx%016lx", | |
| 939 | #else | |
| 940 | "0x%x%016x", | |
| 941 | #endif | |
| 942 | #else | |
| 943 | #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT | |
| 944 | "0x%lx%08lx", | |
| 945 | #else | |
| 946 | "0x%x%08x", | |
| 947 | #endif | |
| 948 | #endif | |
| 949 | CONST_DOUBLE_HIGH (x), CONST_DOUBLE_LOW (x)); | |
| 950 | else if (CONST_DOUBLE_LOW (x) < 0) | |
| 951 | sprintf (buf1, | |
| 952 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
| 953 | "0x%x", | |
| 954 | #else | |
| 955 | "0x%lx", | |
| 956 | #endif | |
| 957 | CONST_DOUBLE_LOW (x)); | |
| 958 | else | |
| 959 | sprintf (buf1, | |
| 960 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
| 961 | "%d", | |
| 962 | #else | |
| 963 | "%ld", | |
| 964 | #endif | |
| 965 | CONST_DOUBLE_LOW (x)); | |
| 966 | strcat (str, buf1); | |
| 967 | } | |
| 968 | else | |
| 969 | /* We can't handle floating point constants; PRINT_OPERAND must | |
| 970 | handle them. */ | |
| 971 | output_operand_lossage ("floating constant misused"); | |
| 972 | break; | |
| 973 | ||
| 974 | case PLUS: | |
| 975 | /* Some assemblers need integer constants to appear last (eg masm). */ | |
| 976 | if (GET_CODE (XEXP (x, 0)) == CONST_INT) | |
| 977 | { | |
| 978 | addr_const_to_string (buf1, XEXP (x, 1)); | |
| 979 | strcat (str, buf1); | |
| 980 | if (INTVAL (XEXP (x, 0)) >= 0) | |
| 981 | strcat (str, "+"); | |
| 982 | addr_const_to_string (buf1, XEXP (x, 0)); | |
| 983 | strcat (str, buf1); | |
| 984 | } | |
| 985 | else | |
| 986 | { | |
| 987 | addr_const_to_string (buf1, XEXP (x, 0)); | |
| 988 | strcat (str, buf1); | |
| bdb669cb | 989 | if (INTVAL (XEXP (x, 1)) >= 0) |
| a3f97cbb JW |
990 | strcat (str, "+"); |
| 991 | addr_const_to_string (buf1, XEXP (x, 1)); | |
| bdb669cb | 992 | strcat (str, buf1); |
| a3f97cbb JW |
993 | } |
| 994 | break; | |
| 995 | ||
| 996 | case MINUS: | |
| 997 | /* Avoid outputting things like x-x or x+5-x, since some assemblers | |
| 998 | can't handle that. */ | |
| 999 | x = simplify_subtraction (x); | |
| 1000 | if (GET_CODE (x) != MINUS) | |
| 1001 | goto restart; | |
| 1002 | ||
| 1003 | addr_const_to_string (buf1, XEXP (x, 0)); | |
| 1004 | strcat (str, buf1); | |
| 1005 | strcat (str, "-"); | |
| 1006 | if (GET_CODE (XEXP (x, 1)) == CONST_INT | |
| 1007 | && INTVAL (XEXP (x, 1)) < 0) | |
| 1008 | { | |
| 1009 | strcat (str, ASM_OPEN_PAREN); | |
| 1010 | addr_const_to_string (buf1, XEXP (x, 1)); | |
| 1011 | strcat (str, buf1); | |
| 1012 | strcat (str, ASM_CLOSE_PAREN); | |
| 1013 | } | |
| 1014 | else | |
| 1015 | { | |
| 1016 | addr_const_to_string (buf1, XEXP (x, 1)); | |
| 1017 | strcat (str, buf1); | |
| 1018 | } | |
| 1019 | break; | |
| 1020 | ||
| 1021 | case ZERO_EXTEND: | |
| 1022 | case SIGN_EXTEND: | |
| 1023 | addr_const_to_string (buf1, XEXP (x, 0)); | |
| 1024 | strcat (str, buf1); | |
| 1025 | break; | |
| 1026 | ||
| 1027 | default: | |
| 1028 | output_operand_lossage ("invalid expression as operand"); | |
| 1029 | } | |
| 1030 | } | |
| 1031 | ||
| 1032 | /* Convert an address constant to a string, and return a pointer to | |
| 1033 | a copy of the result, located on the heap. */ | |
| 1034 | static char * | |
| 1035 | addr_to_string (x) | |
| 1036 | rtx x; | |
| 1037 | { | |
| 1038 | char buf[1024]; | |
| 1039 | addr_const_to_string (buf, x); | |
| 1040 | return xstrdup (buf); | |
| 1041 | } | |
| 1042 | ||
| 1043 | /* Test if rtl node points to a psuedo register. */ | |
| 1044 | inline int | |
| 1045 | is_pseudo_reg (rtl) | |
| 1046 | register rtx rtl; | |
| 1047 | { | |
| 1048 | return (((GET_CODE (rtl) == REG) && (REGNO (rtl) >= FIRST_PSEUDO_REGISTER)) | |
| 1049 | || ((GET_CODE (rtl) == SUBREG) | |
| 1050 | && (REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER))); | |
| 1051 | } | |
| 1052 | ||
| 1053 | ||
| 1054 | /* Return a reference to a type, with its const and volatile qualifiers | |
| 1055 | removed. */ | |
| 1056 | inline tree | |
| 1057 | type_main_variant (type) | |
| 1058 | register tree type; | |
| 1059 | { | |
| 1060 | type = TYPE_MAIN_VARIANT (type); | |
| 1061 | ||
| 1062 | /* There really should be only one main variant among any group of variants | |
| 1063 | of a given type (and all of the MAIN_VARIANT values for all members of | |
| 1064 | the group should point to that one type) but sometimes the C front-end | |
| 1065 | messes this up for array types, so we work around that bug here. */ | |
| 1066 | if (TREE_CODE (type) == ARRAY_TYPE) | |
| 1067 | { | |
| 1068 | while (type != TYPE_MAIN_VARIANT (type)) | |
| 1069 | type = TYPE_MAIN_VARIANT (type); | |
| 1070 | } | |
| 1071 | return type; | |
| 1072 | } | |
| 1073 | ||
| 1074 | /* Return non-zero if the given type node represents a tagged type. */ | |
| 1075 | inline int | |
| 1076 | is_tagged_type (type) | |
| 1077 | register tree type; | |
| 1078 | { | |
| 1079 | register enum tree_code code = TREE_CODE (type); | |
| 1080 | ||
| 1081 | return (code == RECORD_TYPE || code == UNION_TYPE | |
| 1082 | || code == QUAL_UNION_TYPE || code == ENUMERAL_TYPE); | |
| 1083 | } | |
| 1084 | ||
| 1085 | /* Convert a DIE tag into its string name. */ | |
| 1086 | static char * | |
| 1087 | dwarf_tag_name (tag) | |
| 1088 | register unsigned tag; | |
| 1089 | { | |
| 1090 | switch (tag) | |
| 1091 | { | |
| 1092 | case DW_TAG_padding: | |
| 1093 | return "DW_TAG_padding"; | |
| 1094 | case DW_TAG_array_type: | |
| 1095 | return "DW_TAG_array_type"; | |
| 1096 | case DW_TAG_class_type: | |
| 1097 | return "DW_TAG_class_type"; | |
| 1098 | case DW_TAG_entry_point: | |
| 1099 | return "DW_TAG_entry_point"; | |
| 1100 | case DW_TAG_enumeration_type: | |
| 1101 | return "DW_TAG_enumeration_type"; | |
| 1102 | case DW_TAG_formal_parameter: | |
| 1103 | return "DW_TAG_formal_parameter"; | |
| 1104 | case DW_TAG_imported_declaration: | |
| 1105 | return "DW_TAG_imported_declaration"; | |
| 1106 | case DW_TAG_label: | |
| 1107 | return "DW_TAG_label"; | |
| 1108 | case DW_TAG_lexical_block: | |
| 1109 | return "DW_TAG_lexical_block"; | |
| 1110 | case DW_TAG_member: | |
| 1111 | return "DW_TAG_member"; | |
| 1112 | case DW_TAG_pointer_type: | |
| 1113 | return "DW_TAG_pointer_type"; | |
| 1114 | case DW_TAG_reference_type: | |
| 1115 | return "DW_TAG_reference_type"; | |
| 1116 | case DW_TAG_compile_unit: | |
| 1117 | return "DW_TAG_compile_unit"; | |
| 1118 | case DW_TAG_string_type: | |
| 1119 | return "DW_TAG_string_type"; | |
| 1120 | case DW_TAG_structure_type: | |
| 1121 | return "DW_TAG_structure_type"; | |
| 1122 | case DW_TAG_subroutine_type: | |
| 1123 | return "DW_TAG_subroutine_type"; | |
| 1124 | case DW_TAG_typedef: | |
| 1125 | return "DW_TAG_typedef"; | |
| 1126 | case DW_TAG_union_type: | |
| 1127 | return "DW_TAG_union_type"; | |
| 1128 | case DW_TAG_unspecified_parameters: | |
| 1129 | return "DW_TAG_unspecified_parameters"; | |
| 1130 | case DW_TAG_variant: | |
| 1131 | return "DW_TAG_variant"; | |
| 1132 | case DW_TAG_common_block: | |
| 1133 | return "DW_TAG_common_block"; | |
| 1134 | case DW_TAG_common_inclusion: | |
| 1135 | return "DW_TAG_common_inclusion"; | |
| 1136 | case DW_TAG_inheritance: | |
| 1137 | return "DW_TAG_inheritance"; | |
| 1138 | case DW_TAG_inlined_subroutine: | |
| 1139 | return "DW_TAG_inlined_subroutine"; | |
| 1140 | case DW_TAG_module: | |
| 1141 | return "DW_TAG_module"; | |
| 1142 | case DW_TAG_ptr_to_member_type: | |
| 1143 | return "DW_TAG_ptr_to_member_type"; | |
| 1144 | case DW_TAG_set_type: | |
| 1145 | return "DW_TAG_set_type"; | |
| 1146 | case DW_TAG_subrange_type: | |
| 1147 | return "DW_TAG_subrange_type"; | |
| 1148 | case DW_TAG_with_stmt: | |
| 1149 | return "DW_TAG_with_stmt"; | |
| 1150 | case DW_TAG_access_declaration: | |
| 1151 | return "DW_TAG_access_declaration"; | |
| 1152 | case DW_TAG_base_type: | |
| 1153 | return "DW_TAG_base_type"; | |
| 1154 | case DW_TAG_catch_block: | |
| 1155 | return "DW_TAG_catch_block"; | |
| 1156 | case DW_TAG_const_type: | |
| 1157 | return "DW_TAG_const_type"; | |
| 1158 | case DW_TAG_constant: | |
| 1159 | return "DW_TAG_constant"; | |
| 1160 | case DW_TAG_enumerator: | |
| 1161 | return "DW_TAG_enumerator"; | |
| 1162 | case DW_TAG_file_type: | |
| 1163 | return "DW_TAG_file_type"; | |
| 1164 | case DW_TAG_friend: | |
| 1165 | return "DW_TAG_friend"; | |
| 1166 | case DW_TAG_namelist: | |
| 1167 | return "DW_TAG_namelist"; | |
| 1168 | case DW_TAG_namelist_item: | |
| 1169 | return "DW_TAG_namelist_item"; | |
| 1170 | case DW_TAG_packed_type: | |
| 1171 | return "DW_TAG_packed_type"; | |
| 1172 | case DW_TAG_subprogram: | |
| 1173 | return "DW_TAG_subprogram"; | |
| 1174 | case DW_TAG_template_type_param: | |
| 1175 | return "DW_TAG_template_type_param"; | |
| 1176 | case DW_TAG_template_value_param: | |
| 1177 | return "DW_TAG_template_value_param"; | |
| 1178 | case DW_TAG_thrown_type: | |
| 1179 | return "DW_TAG_thrown_type"; | |
| 1180 | case DW_TAG_try_block: | |
| 1181 | return "DW_TAG_try_block"; | |
| 1182 | case DW_TAG_variant_part: | |
| 1183 | return "DW_TAG_variant_part"; | |
| 1184 | case DW_TAG_variable: | |
| 1185 | return "DW_TAG_variable"; | |
| 1186 | case DW_TAG_volatile_type: | |
| 1187 | return "DW_TAG_volatile_type"; | |
| 1188 | case DW_TAG_MIPS_loop: | |
| 1189 | return "DW_TAG_MIPS_loop"; | |
| 1190 | case DW_TAG_format_label: | |
| 1191 | return "DW_TAG_format_label"; | |
| 1192 | case DW_TAG_function_template: | |
| 1193 | return "DW_TAG_function_template"; | |
| 1194 | case DW_TAG_class_template: | |
| 1195 | return "DW_TAG_class_template"; | |
| 1196 | default: | |
| 1197 | return "DW_TAG_<unknown>"; | |
| 1198 | } | |
| 1199 | } | |
| 1200 | ||
| 1201 | /* Convert a DWARF attribute code into its string name. */ | |
| 1202 | static char * | |
| 1203 | dwarf_attr_name (attr) | |
| 1204 | register unsigned attr; | |
| 1205 | { | |
| 1206 | switch (attr) | |
| 1207 | { | |
| 1208 | case DW_AT_sibling: | |
| 1209 | return "DW_AT_sibling"; | |
| 1210 | case DW_AT_location: | |
| 1211 | return "DW_AT_location"; | |
| 1212 | case DW_AT_name: | |
| 1213 | return "DW_AT_name"; | |
| 1214 | case DW_AT_ordering: | |
| 1215 | return "DW_AT_ordering"; | |
| 1216 | case DW_AT_subscr_data: | |
| 1217 | return "DW_AT_subscr_data"; | |
| 1218 | case DW_AT_byte_size: | |
| 1219 | return "DW_AT_byte_size"; | |
| 1220 | case DW_AT_bit_offset: | |
| 1221 | return "DW_AT_bit_offset"; | |
| 1222 | case DW_AT_bit_size: | |
| 1223 | return "DW_AT_bit_size"; | |
| 1224 | case DW_AT_element_list: | |
| 1225 | return "DW_AT_element_list"; | |
| 1226 | case DW_AT_stmt_list: | |
| 1227 | return "DW_AT_stmt_list"; | |
| 1228 | case DW_AT_low_pc: | |
| 1229 | return "DW_AT_low_pc"; | |
| 1230 | case DW_AT_high_pc: | |
| 1231 | return "DW_AT_high_pc"; | |
| 1232 | case DW_AT_language: | |
| 1233 | return "DW_AT_language"; | |
| 1234 | case DW_AT_member: | |
| 1235 | return "DW_AT_member"; | |
| 1236 | case DW_AT_discr: | |
| 1237 | return "DW_AT_discr"; | |
| 1238 | case DW_AT_discr_value: | |
| 1239 | return "DW_AT_discr_value"; | |
| 1240 | case DW_AT_visibility: | |
| 1241 | return "DW_AT_visibility"; | |
| 1242 | case DW_AT_import: | |
| 1243 | return "DW_AT_import"; | |
| 1244 | case DW_AT_string_length: | |
| 1245 | return "DW_AT_string_length"; | |
| 1246 | case DW_AT_common_reference: | |
| 1247 | return "DW_AT_common_reference"; | |
| 1248 | case DW_AT_comp_dir: | |
| 1249 | return "DW_AT_comp_dir"; | |
| 1250 | case DW_AT_const_value: | |
| 1251 | return "DW_AT_const_value"; | |
| 1252 | case DW_AT_containing_type: | |
| 1253 | return "DW_AT_containing_type"; | |
| 1254 | case DW_AT_default_value: | |
| 1255 | return "DW_AT_default_value"; | |
| 1256 | case DW_AT_inline: | |
| 1257 | return "DW_AT_inline"; | |
| 1258 | case DW_AT_is_optional: | |
| 1259 | return "DW_AT_is_optional"; | |
| 1260 | case DW_AT_lower_bound: | |
| 1261 | return "DW_AT_lower_bound"; | |
| 1262 | case DW_AT_producer: | |
| 1263 | return "DW_AT_producer"; | |
| 1264 | case DW_AT_prototyped: | |
| 1265 | return "DW_AT_prototyped"; | |
| 1266 | case DW_AT_return_addr: | |
| 1267 | return "DW_AT_return_addr"; | |
| 1268 | case DW_AT_start_scope: | |
| 1269 | return "DW_AT_start_scope"; | |
| 1270 | case DW_AT_stride_size: | |
| 1271 | return "DW_AT_stride_size"; | |
| 1272 | case DW_AT_upper_bound: | |
| 1273 | return "DW_AT_upper_bound"; | |
| 1274 | case DW_AT_abstract_origin: | |
| 1275 | return "DW_AT_abstract_origin"; | |
| 1276 | case DW_AT_accessibility: | |
| 1277 | return "DW_AT_accessibility"; | |
| 1278 | case DW_AT_address_class: | |
| 1279 | return "DW_AT_address_class"; | |
| 1280 | case DW_AT_artificial: | |
| 1281 | return "DW_AT_artificial"; | |
| 1282 | case DW_AT_base_types: | |
| 1283 | return "DW_AT_base_types"; | |
| 1284 | case DW_AT_calling_convention: | |
| 1285 | return "DW_AT_calling_convention"; | |
| 1286 | case DW_AT_count: | |
| 1287 | return "DW_AT_count"; | |
| 1288 | case DW_AT_data_member_location: | |
| 1289 | return "DW_AT_data_member_location"; | |
| 1290 | case DW_AT_decl_column: | |
| 1291 | return "DW_AT_decl_column"; | |
| 1292 | case DW_AT_decl_file: | |
| 1293 | return "DW_AT_decl_file"; | |
| 1294 | case DW_AT_decl_line: | |
| 1295 | return "DW_AT_decl_line"; | |
| 1296 | case DW_AT_declaration: | |
| 1297 | return "DW_AT_declaration"; | |
| 1298 | case DW_AT_discr_list: | |
| 1299 | return "DW_AT_discr_list"; | |
| 1300 | case DW_AT_encoding: | |
| 1301 | return "DW_AT_encoding"; | |
| 1302 | case DW_AT_external: | |
| 1303 | return "DW_AT_external"; | |
| 1304 | case DW_AT_frame_base: | |
| 1305 | return "DW_AT_frame_base"; | |
| 1306 | case DW_AT_friend: | |
| 1307 | return "DW_AT_friend"; | |
| 1308 | case DW_AT_identifier_case: | |
| 1309 | return "DW_AT_identifier_case"; | |
| 1310 | case DW_AT_macro_info: | |
| 1311 | return "DW_AT_macro_info"; | |
| 1312 | case DW_AT_namelist_items: | |
| 1313 | return "DW_AT_namelist_items"; | |
| 1314 | case DW_AT_priority: | |
| 1315 | return "DW_AT_priority"; | |
| 1316 | case DW_AT_segment: | |
| 1317 | return "DW_AT_segment"; | |
| 1318 | case DW_AT_specification: | |
| 1319 | return "DW_AT_specification"; | |
| 1320 | case DW_AT_static_link: | |
| 1321 | return "DW_AT_static_link"; | |
| 1322 | case DW_AT_type: | |
| 1323 | return "DW_AT_type"; | |
| 1324 | case DW_AT_use_location: | |
| 1325 | return "DW_AT_use_location"; | |
| 1326 | case DW_AT_variable_parameter: | |
| 1327 | return "DW_AT_variable_parameter"; | |
| 1328 | case DW_AT_virtuality: | |
| 1329 | return "DW_AT_virtuality"; | |
| 1330 | case DW_AT_vtable_elem_location: | |
| 1331 | return "DW_AT_vtable_elem_location"; | |
| 1332 | ||
| a3f97cbb JW |
1333 | case DW_AT_MIPS_fde: |
| 1334 | return "DW_AT_MIPS_fde"; | |
| 1335 | case DW_AT_MIPS_loop_begin: | |
| 1336 | return "DW_AT_MIPS_loop_begin"; | |
| 1337 | case DW_AT_MIPS_tail_loop_begin: | |
| 1338 | return "DW_AT_MIPS_tail_loop_begin"; | |
| 1339 | case DW_AT_MIPS_epilog_begin: | |
| 1340 | return "DW_AT_MIPS_epilog_begin"; | |
| 1341 | case DW_AT_MIPS_loop_unroll_factor: | |
| 1342 | return "DW_AT_MIPS_loop_unroll_factor"; | |
| 1343 | case DW_AT_MIPS_software_pipeline_depth: | |
| 1344 | return "DW_AT_MIPS_software_pipeline_depth"; | |
| 1345 | case DW_AT_MIPS_linkage_name: | |
| 1346 | return "DW_AT_MIPS_linkage_name"; | |
| 7e23cb16 JM |
1347 | case DW_AT_MIPS_stride: |
| 1348 | return "DW_AT_MIPS_stride"; | |
| 1349 | case DW_AT_MIPS_abstract_name: | |
| 1350 | return "DW_AT_MIPS_abstract_name"; | |
| 1351 | case DW_AT_MIPS_clone_origin: | |
| 1352 | return "DW_AT_MIPS_clone_origin"; | |
| 1353 | case DW_AT_MIPS_has_inlines: | |
| 1354 | return "DW_AT_MIPS_has_inlines"; | |
| a3f97cbb JW |
1355 | |
| 1356 | case DW_AT_sf_names: | |
| 1357 | return "DW_AT_sf_names"; | |
| 1358 | case DW_AT_src_info: | |
| 1359 | return "DW_AT_src_info"; | |
| 1360 | case DW_AT_mac_info: | |
| 1361 | return "DW_AT_mac_info"; | |
| 1362 | case DW_AT_src_coords: | |
| 1363 | return "DW_AT_src_coords"; | |
| 1364 | case DW_AT_body_begin: | |
| 1365 | return "DW_AT_body_begin"; | |
| 1366 | case DW_AT_body_end: | |
| 1367 | return "DW_AT_body_end"; | |
| 1368 | default: | |
| 1369 | return "DW_AT_<unknown>"; | |
| 1370 | } | |
| 1371 | } | |
| 1372 | ||
| 1373 | /* Convert a DWARF value form code into its string name. */ | |
| 1374 | static char * | |
| 1375 | dwarf_form_name (form) | |
| 1376 | register unsigned form; | |
| 1377 | { | |
| 1378 | switch (form) | |
| 1379 | { | |
| 1380 | case DW_FORM_addr: | |
| 1381 | return "DW_FORM_addr"; | |
| 1382 | case DW_FORM_block2: | |
| 1383 | return "DW_FORM_block2"; | |
| 1384 | case DW_FORM_block4: | |
| 1385 | return "DW_FORM_block4"; | |
| 1386 | case DW_FORM_data2: | |
| 1387 | return "DW_FORM_data2"; | |
| 1388 | case DW_FORM_data4: | |
| 1389 | return "DW_FORM_data4"; | |
| 1390 | case DW_FORM_data8: | |
| 1391 | return "DW_FORM_data8"; | |
| 1392 | case DW_FORM_string: | |
| 1393 | return "DW_FORM_string"; | |
| 1394 | case DW_FORM_block: | |
| 1395 | return "DW_FORM_block"; | |
| 1396 | case DW_FORM_block1: | |
| 1397 | return "DW_FORM_block1"; | |
| 1398 | case DW_FORM_data1: | |
| 1399 | return "DW_FORM_data1"; | |
| 1400 | case DW_FORM_flag: | |
| 1401 | return "DW_FORM_flag"; | |
| 1402 | case DW_FORM_sdata: | |
| 1403 | return "DW_FORM_sdata"; | |
| 1404 | case DW_FORM_strp: | |
| 1405 | return "DW_FORM_strp"; | |
| 1406 | case DW_FORM_udata: | |
| 1407 | return "DW_FORM_udata"; | |
| 1408 | case DW_FORM_ref_addr: | |
| 1409 | return "DW_FORM_ref_addr"; | |
| 1410 | case DW_FORM_ref1: | |
| 1411 | return "DW_FORM_ref1"; | |
| 1412 | case DW_FORM_ref2: | |
| 1413 | return "DW_FORM_ref2"; | |
| 1414 | case DW_FORM_ref4: | |
| 1415 | return "DW_FORM_ref4"; | |
| 1416 | case DW_FORM_ref8: | |
| 1417 | return "DW_FORM_ref8"; | |
| 1418 | case DW_FORM_ref_udata: | |
| 1419 | return "DW_FORM_ref_udata"; | |
| 1420 | case DW_FORM_indirect: | |
| 1421 | return "DW_FORM_indirect"; | |
| 1422 | default: | |
| 1423 | return "DW_FORM_<unknown>"; | |
| 1424 | } | |
| 1425 | } | |
| 1426 | ||
| 1427 | /* Convert a DWARF stack opcode into its string name. */ | |
| 1428 | static char * | |
| 1429 | dwarf_stack_op_name (op) | |
| 1430 | register unsigned op; | |
| 1431 | { | |
| 1432 | switch (op) | |
| 1433 | { | |
| 1434 | case DW_OP_addr: | |
| 1435 | return "DW_OP_addr"; | |
| 1436 | case DW_OP_deref: | |
| 1437 | return "DW_OP_deref"; | |
| 1438 | case DW_OP_const1u: | |
| 1439 | return "DW_OP_const1u"; | |
| 1440 | case DW_OP_const1s: | |
| 1441 | return "DW_OP_const1s"; | |
| 1442 | case DW_OP_const2u: | |
| 1443 | return "DW_OP_const2u"; | |
| 1444 | case DW_OP_const2s: | |
| 1445 | return "DW_OP_const2s"; | |
| 1446 | case DW_OP_const4u: | |
| 1447 | return "DW_OP_const4u"; | |
| 1448 | case DW_OP_const4s: | |
| 1449 | return "DW_OP_const4s"; | |
| 1450 | case DW_OP_const8u: | |
| 1451 | return "DW_OP_const8u"; | |
| 1452 | case DW_OP_const8s: | |
| 1453 | return "DW_OP_const8s"; | |
| 1454 | case DW_OP_constu: | |
| 1455 | return "DW_OP_constu"; | |
| 1456 | case DW_OP_consts: | |
| 1457 | return "DW_OP_consts"; | |
| 1458 | case DW_OP_dup: | |
| 1459 | return "DW_OP_dup"; | |
| 1460 | case DW_OP_drop: | |
| 1461 | return "DW_OP_drop"; | |
| 1462 | case DW_OP_over: | |
| 1463 | return "DW_OP_over"; | |
| 1464 | case DW_OP_pick: | |
| 1465 | return "DW_OP_pick"; | |
| 1466 | case DW_OP_swap: | |
| 1467 | return "DW_OP_swap"; | |
| 1468 | case DW_OP_rot: | |
| 1469 | return "DW_OP_rot"; | |
| 1470 | case DW_OP_xderef: | |
| 1471 | return "DW_OP_xderef"; | |
| 1472 | case DW_OP_abs: | |
| 1473 | return "DW_OP_abs"; | |
| 1474 | case DW_OP_and: | |
| 1475 | return "DW_OP_and"; | |
| 1476 | case DW_OP_div: | |
| 1477 | return "DW_OP_div"; | |
| 1478 | case DW_OP_minus: | |
| 1479 | return "DW_OP_minus"; | |
| 1480 | case DW_OP_mod: | |
| 1481 | return "DW_OP_mod"; | |
| 1482 | case DW_OP_mul: | |
| 1483 | return "DW_OP_mul"; | |
| 1484 | case DW_OP_neg: | |
| 1485 | return "DW_OP_neg"; | |
| 1486 | case DW_OP_not: | |
| 1487 | return "DW_OP_not"; | |
| 1488 | case DW_OP_or: | |
| 1489 | return "DW_OP_or"; | |
| 1490 | case DW_OP_plus: | |
| 1491 | return "DW_OP_plus"; | |
| 1492 | case DW_OP_plus_uconst: | |
| 1493 | return "DW_OP_plus_uconst"; | |
| 1494 | case DW_OP_shl: | |
| 1495 | return "DW_OP_shl"; | |
| 1496 | case DW_OP_shr: | |
| 1497 | return "DW_OP_shr"; | |
| 1498 | case DW_OP_shra: | |
| 1499 | return "DW_OP_shra"; | |
| 1500 | case DW_OP_xor: | |
| 1501 | return "DW_OP_xor"; | |
| 1502 | case DW_OP_bra: | |
| 1503 | return "DW_OP_bra"; | |
| 1504 | case DW_OP_eq: | |
| 1505 | return "DW_OP_eq"; | |
| 1506 | case DW_OP_ge: | |
| 1507 | return "DW_OP_ge"; | |
| 1508 | case DW_OP_gt: | |
| 1509 | return "DW_OP_gt"; | |
| 1510 | case DW_OP_le: | |
| 1511 | return "DW_OP_le"; | |
| 1512 | case DW_OP_lt: | |
| 1513 | return "DW_OP_lt"; | |
| 1514 | case DW_OP_ne: | |
| 1515 | return "DW_OP_ne"; | |
| 1516 | case DW_OP_skip: | |
| 1517 | return "DW_OP_skip"; | |
| 1518 | case DW_OP_lit0: | |
| 1519 | return "DW_OP_lit0"; | |
| 1520 | case DW_OP_lit1: | |
| 1521 | return "DW_OP_lit1"; | |
| 1522 | case DW_OP_lit2: | |
| 1523 | return "DW_OP_lit2"; | |
| 1524 | case DW_OP_lit3: | |
| 1525 | return "DW_OP_lit3"; | |
| 1526 | case DW_OP_lit4: | |
| 1527 | return "DW_OP_lit4"; | |
| 1528 | case DW_OP_lit5: | |
| 1529 | return "DW_OP_lit5"; | |
| 1530 | case DW_OP_lit6: | |
| 1531 | return "DW_OP_lit6"; | |
| 1532 | case DW_OP_lit7: | |
| 1533 | return "DW_OP_lit7"; | |
| 1534 | case DW_OP_lit8: | |
| 1535 | return "DW_OP_lit8"; | |
| 1536 | case DW_OP_lit9: | |
| 1537 | return "DW_OP_lit9"; | |
| 1538 | case DW_OP_lit10: | |
| 1539 | return "DW_OP_lit10"; | |
| 1540 | case DW_OP_lit11: | |
| 1541 | return "DW_OP_lit11"; | |
| 1542 | case DW_OP_lit12: | |
| 1543 | return "DW_OP_lit12"; | |
| 1544 | case DW_OP_lit13: | |
| 1545 | return "DW_OP_lit13"; | |
| 1546 | case DW_OP_lit14: | |
| 1547 | return "DW_OP_lit14"; | |
| 1548 | case DW_OP_lit15: | |
| 1549 | return "DW_OP_lit15"; | |
| 1550 | case DW_OP_lit16: | |
| 1551 | return "DW_OP_lit16"; | |
| 1552 | case DW_OP_lit17: | |
| 1553 | return "DW_OP_lit17"; | |
| 1554 | case DW_OP_lit18: | |
| 1555 | return "DW_OP_lit18"; | |
| 1556 | case DW_OP_lit19: | |
| 1557 | return "DW_OP_lit19"; | |
| 1558 | case DW_OP_lit20: | |
| 1559 | return "DW_OP_lit20"; | |
| 1560 | case DW_OP_lit21: | |
| 1561 | return "DW_OP_lit21"; | |
| 1562 | case DW_OP_lit22: | |
| 1563 | return "DW_OP_lit22"; | |
| 1564 | case DW_OP_lit23: | |
| 1565 | return "DW_OP_lit23"; | |
| 1566 | case DW_OP_lit24: | |
| 1567 | return "DW_OP_lit24"; | |
| 1568 | case DW_OP_lit25: | |
| 1569 | return "DW_OP_lit25"; | |
| 1570 | case DW_OP_lit26: | |
| 1571 | return "DW_OP_lit26"; | |
| 1572 | case DW_OP_lit27: | |
| 1573 | return "DW_OP_lit27"; | |
| 1574 | case DW_OP_lit28: | |
| 1575 | return "DW_OP_lit28"; | |
| 1576 | case DW_OP_lit29: | |
| 1577 | return "DW_OP_lit29"; | |
| 1578 | case DW_OP_lit30: | |
| 1579 | return "DW_OP_lit30"; | |
| 1580 | case DW_OP_lit31: | |
| 1581 | return "DW_OP_lit31"; | |
| 1582 | case DW_OP_reg0: | |
| 1583 | return "DW_OP_reg0"; | |
| 1584 | case DW_OP_reg1: | |
| 1585 | return "DW_OP_reg1"; | |
| 1586 | case DW_OP_reg2: | |
| 1587 | return "DW_OP_reg2"; | |
| 1588 | case DW_OP_reg3: | |
| 1589 | return "DW_OP_reg3"; | |
| 1590 | case DW_OP_reg4: | |
| 1591 | return "DW_OP_reg4"; | |
| 1592 | case DW_OP_reg5: | |
| 1593 | return "DW_OP_reg5"; | |
| 1594 | case DW_OP_reg6: | |
| 1595 | return "DW_OP_reg6"; | |
| 1596 | case DW_OP_reg7: | |
| 1597 | return "DW_OP_reg7"; | |
| 1598 | case DW_OP_reg8: | |
| 1599 | return "DW_OP_reg8"; | |
| 1600 | case DW_OP_reg9: | |
| 1601 | return "DW_OP_reg9"; | |
| 1602 | case DW_OP_reg10: | |
| 1603 | return "DW_OP_reg10"; | |
| 1604 | case DW_OP_reg11: | |
| 1605 | return "DW_OP_reg11"; | |
| 1606 | case DW_OP_reg12: | |
| 1607 | return "DW_OP_reg12"; | |
| 1608 | case DW_OP_reg13: | |
| 1609 | return "DW_OP_reg13"; | |
| 1610 | case DW_OP_reg14: | |
| 1611 | return "DW_OP_reg14"; | |
| 1612 | case DW_OP_reg15: | |
| 1613 | return "DW_OP_reg15"; | |
| 1614 | case DW_OP_reg16: | |
| 1615 | return "DW_OP_reg16"; | |
| 1616 | case DW_OP_reg17: | |
| 1617 | return "DW_OP_reg17"; | |
| 1618 | case DW_OP_reg18: | |
| 1619 | return "DW_OP_reg18"; | |
| 1620 | case DW_OP_reg19: | |
| 1621 | return "DW_OP_reg19"; | |
| 1622 | case DW_OP_reg20: | |
| 1623 | return "DW_OP_reg20"; | |
| 1624 | case DW_OP_reg21: | |
| 1625 | return "DW_OP_reg21"; | |
| 1626 | case DW_OP_reg22: | |
| 1627 | return "DW_OP_reg22"; | |
| 1628 | case DW_OP_reg23: | |
| 1629 | return "DW_OP_reg23"; | |
| 1630 | case DW_OP_reg24: | |
| 1631 | return "DW_OP_reg24"; | |
| 1632 | case DW_OP_reg25: | |
| 1633 | return "DW_OP_reg25"; | |
| 1634 | case DW_OP_reg26: | |
| 1635 | return "DW_OP_reg26"; | |
| 1636 | case DW_OP_reg27: | |
| 1637 | return "DW_OP_reg27"; | |
| 1638 | case DW_OP_reg28: | |
| 1639 | return "DW_OP_reg28"; | |
| 1640 | case DW_OP_reg29: | |
| 1641 | return "DW_OP_reg29"; | |
| 1642 | case DW_OP_reg30: | |
| 1643 | return "DW_OP_reg30"; | |
| 1644 | case DW_OP_reg31: | |
| 1645 | return "DW_OP_reg31"; | |
| 1646 | case DW_OP_breg0: | |
| 1647 | return "DW_OP_breg0"; | |
| 1648 | case DW_OP_breg1: | |
| 1649 | return "DW_OP_breg1"; | |
| 1650 | case DW_OP_breg2: | |
| 1651 | return "DW_OP_breg2"; | |
| 1652 | case DW_OP_breg3: | |
| 1653 | return "DW_OP_breg3"; | |
| 1654 | case DW_OP_breg4: | |
| 1655 | return "DW_OP_breg4"; | |
| 1656 | case DW_OP_breg5: | |
| 1657 | return "DW_OP_breg5"; | |
| 1658 | case DW_OP_breg6: | |
| 1659 | return "DW_OP_breg6"; | |
| 1660 | case DW_OP_breg7: | |
| 1661 | return "DW_OP_breg7"; | |
| 1662 | case DW_OP_breg8: | |
| 1663 | return "DW_OP_breg8"; | |
| 1664 | case DW_OP_breg9: | |
| 1665 | return "DW_OP_breg9"; | |
| 1666 | case DW_OP_breg10: | |
| 1667 | return "DW_OP_breg10"; | |
| 1668 | case DW_OP_breg11: | |
| 1669 | return "DW_OP_breg11"; | |
| 1670 | case DW_OP_breg12: | |
| 1671 | return "DW_OP_breg12"; | |
| 1672 | case DW_OP_breg13: | |
| 1673 | return "DW_OP_breg13"; | |
| 1674 | case DW_OP_breg14: | |
| 1675 | return "DW_OP_breg14"; | |
| 1676 | case DW_OP_breg15: | |
| 1677 | return "DW_OP_breg15"; | |
| 1678 | case DW_OP_breg16: | |
| 1679 | return "DW_OP_breg16"; | |
| 1680 | case DW_OP_breg17: | |
| 1681 | return "DW_OP_breg17"; | |
| 1682 | case DW_OP_breg18: | |
| 1683 | return "DW_OP_breg18"; | |
| 1684 | case DW_OP_breg19: | |
| 1685 | return "DW_OP_breg19"; | |
| 1686 | case DW_OP_breg20: | |
| 1687 | return "DW_OP_breg20"; | |
| 1688 | case DW_OP_breg21: | |
| 1689 | return "DW_OP_breg21"; | |
| 1690 | case DW_OP_breg22: | |
| 1691 | return "DW_OP_breg22"; | |
| 1692 | case DW_OP_breg23: | |
| 1693 | return "DW_OP_breg23"; | |
| 1694 | case DW_OP_breg24: | |
| 1695 | return "DW_OP_breg24"; | |
| 1696 | case DW_OP_breg25: | |
| 1697 | return "DW_OP_breg25"; | |
| 1698 | case DW_OP_breg26: | |
| 1699 | return "DW_OP_breg26"; | |
| 1700 | case DW_OP_breg27: | |
| 1701 | return "DW_OP_breg27"; | |
| 1702 | case DW_OP_breg28: | |
| 1703 | return "DW_OP_breg28"; | |
| 1704 | case DW_OP_breg29: | |
| 1705 | return "DW_OP_breg29"; | |
| 1706 | case DW_OP_breg30: | |
| 1707 | return "DW_OP_breg30"; | |
| 1708 | case DW_OP_breg31: | |
| 1709 | return "DW_OP_breg31"; | |
| 1710 | case DW_OP_regx: | |
| 1711 | return "DW_OP_regx"; | |
| 1712 | case DW_OP_fbreg: | |
| 1713 | return "DW_OP_fbreg"; | |
| 1714 | case DW_OP_bregx: | |
| 1715 | return "DW_OP_bregx"; | |
| 1716 | case DW_OP_piece: | |
| 1717 | return "DW_OP_piece"; | |
| 1718 | case DW_OP_deref_size: | |
| 1719 | return "DW_OP_deref_size"; | |
| 1720 | case DW_OP_xderef_size: | |
| 1721 | return "DW_OP_xderef_size"; | |
| 1722 | case DW_OP_nop: | |
| 1723 | return "DW_OP_nop"; | |
| 1724 | default: | |
| 1725 | return "OP_<unknown>"; | |
| 1726 | } | |
| 1727 | } | |
| 1728 | ||
| 1729 | /* Convert a DWARF type code into its string name. */ | |
| 1730 | static char * | |
| 1731 | dwarf_type_encoding_name (enc) | |
| 1732 | register unsigned enc; | |
| 1733 | { | |
| 1734 | switch (enc) | |
| 1735 | { | |
| 1736 | case DW_ATE_address: | |
| 1737 | return "DW_ATE_address"; | |
| 1738 | case DW_ATE_boolean: | |
| 1739 | return "DW_ATE_boolean"; | |
| 1740 | case DW_ATE_complex_float: | |
| 1741 | return "DW_ATE_complex_float"; | |
| 1742 | case DW_ATE_float: | |
| 1743 | return "DW_ATE_float"; | |
| 1744 | case DW_ATE_signed: | |
| 1745 | return "DW_ATE_signed"; | |
| 1746 | case DW_ATE_signed_char: | |
| 1747 | return "DW_ATE_signed_char"; | |
| 1748 | case DW_ATE_unsigned: | |
| 1749 | return "DW_ATE_unsigned"; | |
| 1750 | case DW_ATE_unsigned_char: | |
| 1751 | return "DW_ATE_unsigned_char"; | |
| 1752 | default: | |
| 1753 | return "DW_ATE_<unknown>"; | |
| 1754 | } | |
| 1755 | } | |
| 1756 | ||
| 1757 | /* Convert a DWARF call frame info. operation to its string name */ | |
| 1758 | static char * | |
| 1759 | dwarf_cfi_name (cfi_opc) | |
| 1760 | register unsigned cfi_opc; | |
| 1761 | { | |
| 1762 | switch (cfi_opc) | |
| 1763 | { | |
| 1764 | case DW_CFA_advance_loc: | |
| 1765 | return "DW_CFA_advance_loc"; | |
| 1766 | case DW_CFA_offset: | |
| 1767 | return "DW_CFA_offset"; | |
| 1768 | case DW_CFA_restore: | |
| 1769 | return "DW_CFA_restore"; | |
| 1770 | case DW_CFA_nop: | |
| 1771 | return "DW_CFA_nop"; | |
| 1772 | case DW_CFA_set_loc: | |
| 1773 | return "DW_CFA_set_loc"; | |
| 1774 | case DW_CFA_advance_loc1: | |
| 1775 | return "DW_CFA_advance_loc1"; | |
| 1776 | case DW_CFA_advance_loc2: | |
| 1777 | return "DW_CFA_advance_loc2"; | |
| 1778 | case DW_CFA_advance_loc4: | |
| 1779 | return "DW_CFA_advance_loc4"; | |
| 1780 | case DW_CFA_offset_extended: | |
| 1781 | return "DW_CFA_offset_extended"; | |
| 1782 | case DW_CFA_restore_extended: | |
| 1783 | return "DW_CFA_restore_extended"; | |
| 1784 | case DW_CFA_undefined: | |
| 1785 | return "DW_CFA_undefined"; | |
| 1786 | case DW_CFA_same_value: | |
| 1787 | return "DW_CFA_same_value"; | |
| 1788 | case DW_CFA_register: | |
| 1789 | return "DW_CFA_register"; | |
| 1790 | case DW_CFA_remember_state: | |
| 1791 | return "DW_CFA_remember_state"; | |
| 1792 | case DW_CFA_restore_state: | |
| 1793 | return "DW_CFA_restore_state"; | |
| 1794 | case DW_CFA_def_cfa: | |
| 1795 | return "DW_CFA_def_cfa"; | |
| 1796 | case DW_CFA_def_cfa_register: | |
| 1797 | return "DW_CFA_def_cfa_register"; | |
| 1798 | case DW_CFA_def_cfa_offset: | |
| 1799 | return "DW_CFA_def_cfa_offset"; | |
| 1800 | /* SGI/MIPS specific */ | |
| 1801 | case DW_CFA_MIPS_advance_loc8: | |
| 1802 | return "DW_CFA_MIPS_advance_loc8"; | |
| 1803 | default: | |
| 1804 | return "DW_CFA_<unknown>"; | |
| 1805 | } | |
| 1806 | } | |
| 1807 | \f | |
| 1808 | /* Determine the "ultimate origin" of a decl. The decl may be an inlined | |
| 1809 | instance of an inlined instance of a decl which is local to an inline | |
| 1810 | function, so we have to trace all of the way back through the origin chain | |
| 1811 | to find out what sort of node actually served as the original seed for the | |
| 1812 | given block. */ | |
| 1813 | static tree | |
| 1814 | decl_ultimate_origin (decl) | |
| 1815 | register tree decl; | |
| 1816 | { | |
| 1817 | register tree immediate_origin = DECL_ABSTRACT_ORIGIN (decl); | |
| 1818 | ||
| 1819 | if (immediate_origin == NULL) | |
| 1820 | return NULL; | |
| 1821 | else | |
| 1822 | { | |
| 1823 | register tree ret_val; | |
| 1824 | register tree lookahead = immediate_origin; | |
| 1825 | ||
| 1826 | do | |
| 1827 | { | |
| 1828 | ret_val = lookahead; | |
| 1829 | lookahead = DECL_ABSTRACT_ORIGIN (ret_val); | |
| 1830 | } | |
| 1831 | while (lookahead != NULL && lookahead != ret_val); | |
| 1832 | return ret_val; | |
| 1833 | } | |
| 1834 | } | |
| 1835 | ||
| 1836 | /* Determine the "ultimate origin" of a block. The block may be an inlined | |
| 1837 | instance of an inlined instance of a block which is local to an inline | |
| 1838 | function, so we have to trace all of the way back through the origin chain | |
| 1839 | to find out what sort of node actually served as the original seed for the | |
| 1840 | given block. */ | |
| 1841 | static tree | |
| 1842 | block_ultimate_origin (block) | |
| 1843 | register tree block; | |
| 1844 | { | |
| 1845 | register tree immediate_origin = BLOCK_ABSTRACT_ORIGIN (block); | |
| 1846 | ||
| 1847 | if (immediate_origin == NULL) | |
| 1848 | return NULL; | |
| 1849 | else | |
| 1850 | { | |
| 1851 | register tree ret_val; | |
| 1852 | register tree lookahead = immediate_origin; | |
| 1853 | ||
| 1854 | do | |
| 1855 | { | |
| 1856 | ret_val = lookahead; | |
| 1857 | lookahead = (TREE_CODE (ret_val) == BLOCK) | |
| 1858 | ? BLOCK_ABSTRACT_ORIGIN (ret_val) | |
| 1859 | : NULL; | |
| 1860 | } | |
| 1861 | while (lookahead != NULL && lookahead != ret_val); | |
| 1862 | return ret_val; | |
| 1863 | } | |
| 1864 | } | |
| bdb669cb JM |
1865 | |
| 1866 | /* Get the class to which DECL belongs, if any. In g++, the DECL_CONTEXT | |
| 1867 | of a virtual function may refer to a base class, so we check the 'this' | |
| 1868 | parameter. */ | |
| 1869 | ||
| 1870 | tree | |
| 1871 | decl_class_context (decl) | |
| 1872 | tree decl; | |
| 1873 | { | |
| 1874 | tree context = NULL_TREE; | |
| 1875 | if (TREE_CODE (decl) != FUNCTION_DECL | |
| 1876 | || ! DECL_VIRTUAL_P (decl)) | |
| 1877 | context = DECL_CONTEXT (decl); | |
| 1878 | else | |
| 1879 | context = TYPE_MAIN_VARIANT | |
| 1880 | (TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl))))); | |
| 1881 | ||
| 1882 | if (context && TREE_CODE_CLASS (TREE_CODE (context)) != 't') | |
| 1883 | context = NULL_TREE; | |
| 1884 | ||
| 1885 | return context; | |
| 1886 | } | |
| a3f97cbb JW |
1887 | \f |
| 1888 | /**************** DIE internal representation constturction *******************/ | |
| 1889 | ||
| 1890 | /* Add an attribute/value pair to a DIE */ | |
| 1891 | inline void | |
| 1892 | add_dwarf_attr (die, attr) | |
| 1893 | register dw_die_ref die; | |
| 1894 | register dw_attr_ref attr; | |
| 1895 | { | |
| 1896 | if (die != NULL && attr != NULL) | |
| 1897 | { | |
| 1898 | if (die->die_attr == NULL) | |
| 1899 | { | |
| 1900 | die->die_attr = attr; | |
| 1901 | die->die_attr_last = attr; | |
| 1902 | } | |
| 1903 | else | |
| 1904 | { | |
| 1905 | die->die_attr_last->dw_attr_next = attr; | |
| 1906 | die->die_attr_last = attr; | |
| 1907 | } | |
| 1908 | } | |
| 1909 | } | |
| 1910 | ||
| 1911 | /* Add a flag value attribute to a DIE. */ | |
| 1912 | inline void | |
| 1913 | add_AT_flag (die, attr_kind, flag) | |
| 1914 | register dw_die_ref die; | |
| 1915 | register enum dwarf_attribute attr_kind; | |
| 1916 | register unsigned flag; | |
| 1917 | { | |
| 1918 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 1919 | if (attr != NULL) | |
| 1920 | { | |
| 1921 | attr->dw_attr_next = NULL; | |
| 1922 | attr->dw_attr = attr_kind; | |
| 1923 | attr->dw_attr_val.val_class = dw_val_class_flag; | |
| 1924 | attr->dw_attr_val.v.val_flag = flag; | |
| 1925 | add_dwarf_attr (die, attr); | |
| 1926 | } | |
| 1927 | } | |
| 1928 | ||
| 1929 | /* Add a signed integer attribute value to a DIE. */ | |
| 1930 | inline void | |
| 1931 | add_AT_int (die, attr_kind, int_val) | |
| 1932 | register dw_die_ref die; | |
| 1933 | register enum dwarf_attribute attr_kind; | |
| 1934 | register long int int_val; | |
| 1935 | { | |
| 1936 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 1937 | if (attr != NULL) | |
| 1938 | { | |
| 1939 | attr->dw_attr_next = NULL; | |
| 1940 | attr->dw_attr = attr_kind; | |
| 1941 | attr->dw_attr_val.val_class = dw_val_class_const; | |
| 1942 | attr->dw_attr_val.v.val_int = int_val; | |
| 1943 | add_dwarf_attr (die, attr); | |
| 1944 | } | |
| 1945 | } | |
| 1946 | ||
| 1947 | /* Add an unsigned integer attribute value to a DIE. */ | |
| 1948 | inline void | |
| 1949 | add_AT_unsigned (die, attr_kind, unsigned_val) | |
| 1950 | register dw_die_ref die; | |
| 1951 | register enum dwarf_attribute attr_kind; | |
| 1952 | register unsigned long unsigned_val; | |
| 1953 | { | |
| 1954 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 1955 | if (attr != NULL) | |
| 1956 | { | |
| 1957 | attr->dw_attr_next = NULL; | |
| 1958 | attr->dw_attr = attr_kind; | |
| 1959 | attr->dw_attr_val.val_class = dw_val_class_unsigned_const; | |
| 1960 | attr->dw_attr_val.v.val_unsigned = unsigned_val; | |
| 1961 | add_dwarf_attr (die, attr); | |
| 1962 | } | |
| 1963 | } | |
| 1964 | ||
| 1965 | /* Add an unsigned double integer attribute value to a DIE. */ | |
| 1966 | inline void | |
| 1967 | add_AT_double (die, attr_kind, val_hi, val_low) | |
| 1968 | register dw_die_ref die; | |
| 1969 | register enum dwarf_attribute attr_kind; | |
| 1970 | register unsigned long val_hi; | |
| 1971 | register unsigned long val_low; | |
| 1972 | { | |
| 1973 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 1974 | if (attr != NULL) | |
| 1975 | { | |
| 1976 | attr->dw_attr_next = NULL; | |
| 1977 | attr->dw_attr = attr_kind; | |
| 1978 | attr->dw_attr_val.val_class = dw_val_class_double_const; | |
| 1979 | attr->dw_attr_val.v.val_dbl_const.dw_dbl_hi = val_hi; | |
| 1980 | attr->dw_attr_val.v.val_dbl_const.dw_dbl_low = val_low; | |
| 1981 | add_dwarf_attr (die, attr); | |
| 1982 | } | |
| 1983 | } | |
| 1984 | ||
| 1985 | /* Add a string attribute value to a DIE. */ | |
| 1986 | inline void | |
| 1987 | add_AT_string (die, attr_kind, str) | |
| 1988 | register dw_die_ref die; | |
| 1989 | register enum dwarf_attribute attr_kind; | |
| 1990 | register char *str; | |
| 1991 | { | |
| 1992 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 1993 | if (attr != NULL) | |
| 1994 | { | |
| 1995 | attr->dw_attr_next = NULL; | |
| 1996 | attr->dw_attr = attr_kind; | |
| 1997 | attr->dw_attr_val.val_class = dw_val_class_str; | |
| 1998 | attr->dw_attr_val.v.val_str = xstrdup (str); | |
| 1999 | add_dwarf_attr (die, attr); | |
| 2000 | } | |
| 2001 | } | |
| 2002 | ||
| 2003 | /* Add a DIE reference attribute value to a DIE. */ | |
| 2004 | inline void | |
| 2005 | add_AT_die_ref (die, attr_kind, targ_die) | |
| 2006 | register dw_die_ref die; | |
| 2007 | register enum dwarf_attribute attr_kind; | |
| 2008 | register dw_die_ref targ_die; | |
| 2009 | { | |
| 2010 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 2011 | if (attr != NULL) | |
| 2012 | { | |
| 2013 | attr->dw_attr_next = NULL; | |
| 2014 | attr->dw_attr = attr_kind; | |
| 2015 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
| 2016 | attr->dw_attr_val.v.val_die_ref = targ_die; | |
| 2017 | add_dwarf_attr (die, attr); | |
| 2018 | } | |
| 2019 | } | |
| 2020 | ||
| 2021 | /* Add an FDE reference attribute value to a DIE. */ | |
| 2022 | inline void | |
| 2023 | add_AT_fde_ref (die, attr_kind, targ_fde) | |
| 2024 | register dw_die_ref die; | |
| 2025 | register enum dwarf_attribute attr_kind; | |
| 2026 | register unsigned targ_fde; | |
| 2027 | { | |
| 2028 | register dw_attr_ref attr; | |
| 2029 | ||
| 2030 | attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 2031 | if (attr != NULL) | |
| 2032 | { | |
| 2033 | attr->dw_attr_next = NULL; | |
| 2034 | attr->dw_attr = attr_kind; | |
| 2035 | attr->dw_attr_val.val_class = dw_val_class_fde_ref; | |
| 2036 | attr->dw_attr_val.v.val_fde_index = targ_fde; | |
| 2037 | add_dwarf_attr (die, attr); | |
| 2038 | } | |
| 2039 | } | |
| 2040 | ||
| 2041 | /* Add a location description attribute value to a DIE. */ | |
| 2042 | inline void | |
| 2043 | add_AT_loc (die, attr_kind, loc) | |
| 2044 | register dw_die_ref die; | |
| 2045 | register enum dwarf_attribute attr_kind; | |
| 2046 | register dw_loc_descr_ref loc; | |
| 2047 | { | |
| 2048 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 2049 | if (attr != NULL) | |
| 2050 | { | |
| 2051 | attr->dw_attr_next = NULL; | |
| 2052 | attr->dw_attr = attr_kind; | |
| 2053 | attr->dw_attr_val.val_class = dw_val_class_loc; | |
| 2054 | attr->dw_attr_val.v.val_loc = loc; | |
| 2055 | add_dwarf_attr (die, attr); | |
| 2056 | } | |
| 2057 | } | |
| 2058 | ||
| 2059 | /* Add an address constant attribute value to a DIE. */ | |
| 2060 | inline void | |
| 2061 | add_AT_addr (die, attr_kind, addr) | |
| 2062 | register dw_die_ref die; | |
| 2063 | register enum dwarf_attribute attr_kind; | |
| 2064 | char *addr; | |
| 2065 | { | |
| 2066 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 2067 | if (attr != NULL) | |
| 2068 | { | |
| 2069 | attr->dw_attr_next = NULL; | |
| 2070 | attr->dw_attr = attr_kind; | |
| 2071 | attr->dw_attr_val.val_class = dw_val_class_addr; | |
| 2072 | attr->dw_attr_val.v.val_addr = addr; | |
| 2073 | add_dwarf_attr (die, attr); | |
| 2074 | } | |
| 2075 | } | |
| 2076 | ||
| 2077 | /* Add a label identifier attribute value to a DIE. */ | |
| 2078 | inline void | |
| 2079 | add_AT_lbl_id (die, attr_kind, lbl_id) | |
| 2080 | register dw_die_ref die; | |
| 2081 | register enum dwarf_attribute attr_kind; | |
| 2082 | register char *lbl_id; | |
| 2083 | { | |
| 2084 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 2085 | if (attr != NULL) | |
| 2086 | { | |
| 2087 | attr->dw_attr_next = NULL; | |
| 2088 | attr->dw_attr = attr_kind; | |
| 2089 | attr->dw_attr_val.val_class = dw_val_class_lbl_id; | |
| 2090 | attr->dw_attr_val.v.val_lbl_id = xstrdup (lbl_id); | |
| 2091 | add_dwarf_attr (die, attr); | |
| 2092 | } | |
| 2093 | } | |
| 2094 | ||
| 2095 | /* Add a section offset attribute value to a DIE. */ | |
| 2096 | inline void | |
| 2097 | add_AT_section_offset (die, attr_kind, section) | |
| 2098 | register dw_die_ref die; | |
| 2099 | register enum dwarf_attribute attr_kind; | |
| 2100 | register char *section; | |
| 2101 | { | |
| 2102 | register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 2103 | if (attr != NULL) | |
| 2104 | { | |
| 2105 | attr->dw_attr_next = NULL; | |
| 2106 | attr->dw_attr = attr_kind; | |
| 2107 | attr->dw_attr_val.val_class = dw_val_class_section_offset; | |
| 2108 | attr->dw_attr_val.v.val_section = section; | |
| 2109 | add_dwarf_attr (die, attr); | |
| 2110 | } | |
| 2111 | } | |
| 2112 | ||
| a3f97cbb JW |
2113 | /* Test if die refers to an external subroutine. */ |
| 2114 | inline int | |
| 2115 | is_extern_subr_die (die) | |
| 2116 | register dw_die_ref die; | |
| 2117 | { | |
| 2118 | register dw_attr_ref a; | |
| 2119 | register int is_subr = FALSE; | |
| 2120 | register int is_extern = FALSE; | |
| 2121 | if (die != NULL && die->die_tag == DW_TAG_subprogram) | |
| 2122 | { | |
| 2123 | is_subr = TRUE; | |
| 2124 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
| 2125 | { | |
| 2126 | if (a->dw_attr == DW_AT_external | |
| 2127 | && a->dw_attr_val.val_class == dw_val_class_flag | |
| 2128 | && a->dw_attr_val.v.val_flag != 0) | |
| 2129 | { | |
| 2130 | is_extern = TRUE; | |
| 2131 | break; | |
| 2132 | } | |
| 2133 | } | |
| 2134 | } | |
| 2135 | return is_subr && is_extern; | |
| 2136 | } | |
| 2137 | ||
| d291dd49 JM |
2138 | /* Get the attribute of type attr_kind. */ |
| 2139 | inline dw_attr_ref | |
| 2140 | get_AT (die, attr_kind) | |
| a3f97cbb | 2141 | register dw_die_ref die; |
| d291dd49 | 2142 | register enum dwarf_attribute attr_kind; |
| a3f97cbb JW |
2143 | { |
| 2144 | register dw_attr_ref a; | |
| 7e23cb16 | 2145 | register dw_die_ref spec = NULL; |
| d291dd49 | 2146 | |
| a3f97cbb JW |
2147 | if (die != NULL) |
| 2148 | { | |
| 2149 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
| 2150 | { | |
| d291dd49 JM |
2151 | if (a->dw_attr == attr_kind) |
| 2152 | return a; | |
| 2153 | if (a->dw_attr == DW_AT_specification | |
| 2154 | || a->dw_attr == DW_AT_abstract_origin) | |
| 2155 | spec = a->dw_attr_val.v.val_die_ref; | |
| a3f97cbb | 2156 | } |
| d291dd49 JM |
2157 | if (spec) |
| 2158 | return get_AT (spec, attr_kind); | |
| a3f97cbb | 2159 | } |
| d291dd49 JM |
2160 | return NULL; |
| 2161 | } | |
| 2162 | ||
| 2163 | /* Return the "low pc" attribute value, typically associated with | |
| 2164 | a subprogram DIE. Return null if the "low pc" attribute is | |
| 2165 | either not prsent, or if it cannot be represented as an | |
| 2166 | assembler label identifier. */ | |
| 2167 | inline char * | |
| 2168 | get_AT_low_pc (die) | |
| 2169 | register dw_die_ref die; | |
| 2170 | { | |
| 2171 | register dw_attr_ref a = get_AT (die, DW_AT_low_pc); | |
| 2172 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) | |
| 2173 | return a->dw_attr_val.v.val_lbl_id; | |
| 2174 | return NULL; | |
| 2175 | } | |
| 2176 | ||
| 2177 | /* Return the "high pc" attribute value, typically associated with | |
| 2178 | a subprogram DIE. Return null if the "high pc" attribute is | |
| 2179 | either not prsent, or if it cannot be represented as an | |
| 2180 | assembler label identifier. */ | |
| 2181 | inline char * | |
| 2182 | get_AT_hi_pc (die) | |
| 2183 | register dw_die_ref die; | |
| 2184 | { | |
| 2185 | register dw_attr_ref a = get_AT (die, DW_AT_high_pc); | |
| 2186 | if (a && a->dw_attr_val.val_class == dw_val_class_lbl_id) | |
| 2187 | return a->dw_attr_val.v.val_lbl_id; | |
| 2188 | return NULL; | |
| 2189 | } | |
| 2190 | ||
| 2191 | /* Return the value of the string attribute designated by ATTR_KIND, or | |
| 2192 | NULL if it is not present. */ | |
| 2193 | inline char * | |
| 2194 | get_AT_string (die, attr_kind) | |
| 2195 | register dw_die_ref die; | |
| 2196 | register enum dwarf_attribute attr_kind; | |
| 2197 | { | |
| 2198 | register dw_attr_ref a = get_AT (die, attr_kind); | |
| 2199 | if (a && a->dw_attr_val.val_class == dw_val_class_str) | |
| 2200 | return a->dw_attr_val.v.val_str; | |
| 2201 | return NULL; | |
| a3f97cbb JW |
2202 | } |
| 2203 | ||
| bdb669cb JM |
2204 | /* Return the value of the flag attribute designated by ATTR_KIND, or -1 |
| 2205 | if it is not present. */ | |
| 2206 | inline int | |
| 2207 | get_AT_flag (die, attr_kind) | |
| 2208 | register dw_die_ref die; | |
| 2209 | register enum dwarf_attribute attr_kind; | |
| 2210 | { | |
| d291dd49 JM |
2211 | register dw_attr_ref a = get_AT (die, attr_kind); |
| 2212 | if (a && a->dw_attr_val.val_class == dw_val_class_flag) | |
| 2213 | return a->dw_attr_val.v.val_flag; | |
| bdb669cb JM |
2214 | return -1; |
| 2215 | } | |
| 2216 | ||
| 2217 | /* Return the value of the unsigned attribute designated by ATTR_KIND, or 0 | |
| 2218 | if it is not present. */ | |
| 2219 | inline unsigned | |
| 2220 | get_AT_unsigned (die, attr_kind) | |
| 2221 | register dw_die_ref die; | |
| 2222 | register enum dwarf_attribute attr_kind; | |
| 2223 | { | |
| d291dd49 JM |
2224 | register dw_attr_ref a = get_AT (die, attr_kind); |
| 2225 | if (a && a->dw_attr_val.val_class == dw_val_class_unsigned_const) | |
| 2226 | return a->dw_attr_val.v.val_unsigned; | |
| bdb669cb JM |
2227 | return 0; |
| 2228 | } | |
| a3f97cbb | 2229 | |
| a9d38797 JM |
2230 | inline int |
| 2231 | is_c_family () | |
| 2232 | { | |
| 2233 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
| 2234 | return (lang == DW_LANG_C || lang == DW_LANG_C89 | |
| 2235 | || lang == DW_LANG_C_plus_plus); | |
| 2236 | } | |
| 2237 | ||
| 2238 | inline int | |
| 2239 | is_fortran () | |
| 2240 | { | |
| 2241 | register unsigned lang = get_AT_unsigned (comp_unit_die, DW_AT_language); | |
| 2242 | return (lang == DW_LANG_Fortran77 || lang == DW_LANG_Fortran90); | |
| 2243 | } | |
| 2244 | ||
| 4b674448 JM |
2245 | /* Remove the specified attribute if present. */ |
| 2246 | inline void | |
| 2247 | remove_AT (die, attr_kind) | |
| 2248 | register dw_die_ref die; | |
| 2249 | register enum dwarf_attribute attr_kind; | |
| 2250 | { | |
| 2251 | register dw_attr_ref a; | |
| 2252 | register dw_attr_ref removed = NULL;; | |
| 2253 | if (die != NULL) | |
| 2254 | { | |
| 2255 | if (die->die_attr->dw_attr == attr_kind) | |
| 2256 | { | |
| 2257 | removed = die->die_attr; | |
| 2258 | if (die->die_attr_last == die->die_attr) | |
| 2259 | die->die_attr_last = NULL; | |
| 2260 | die->die_attr = die->die_attr->dw_attr_next; | |
| 2261 | } | |
| 2262 | else for (a = die->die_attr; a->dw_attr_next != NULL; | |
| 2263 | a = a->dw_attr_next) | |
| 2264 | if (a->dw_attr_next->dw_attr == attr_kind) | |
| 2265 | { | |
| 2266 | removed = a->dw_attr_next; | |
| 2267 | if (die->die_attr_last == a->dw_attr_next) | |
| 2268 | die->die_attr_last = a; | |
| 2269 | a->dw_attr_next = a->dw_attr_next->dw_attr_next; | |
| e90b62db | 2270 | break; |
| 4b674448 JM |
2271 | } |
| 2272 | if (removed) | |
| 2273 | free (removed); | |
| 2274 | } | |
| 2275 | } | |
| 2276 | ||
| 2277 | /* Discard the children of this DIE. */ | |
| 2278 | inline void | |
| 2279 | remove_children (die) | |
| 2280 | register dw_die_ref die; | |
| 2281 | { | |
| 2282 | register dw_die_ref child_die = die->die_child; | |
| 2283 | die->die_child = NULL; | |
| 2284 | die->die_child_last = NULL; | |
| 2285 | while (child_die != NULL) | |
| 2286 | { | |
| 2287 | register dw_die_ref tmp_die = child_die; | |
| 2288 | register dw_attr_ref a; | |
| 2289 | child_die = child_die->die_sib; | |
| 2290 | ||
| 2291 | for (a = tmp_die->die_attr; a != NULL; ) | |
| 2292 | { | |
| 2293 | register dw_attr_ref tmp_a = a; | |
| 2294 | a = a->dw_attr_next; | |
| 2295 | free (tmp_a); | |
| 2296 | } | |
| 2297 | free (tmp_die); | |
| 2298 | } | |
| 2299 | } | |
| 2300 | ||
| a3f97cbb JW |
2301 | /* Add a child DIE below its parent. */ |
| 2302 | inline void | |
| 2303 | add_child_die (die, child_die) | |
| 2304 | register dw_die_ref die; | |
| 2305 | register dw_die_ref child_die; | |
| 2306 | { | |
| 2307 | if (die != NULL && child_die != NULL) | |
| 2308 | { | |
| 2309 | assert (die != child_die); | |
| 2310 | child_die->die_parent = die; | |
| 2311 | child_die->die_sib = NULL; | |
| 2312 | if (die->die_child == NULL) | |
| 2313 | { | |
| 2314 | die->die_child = child_die; | |
| 2315 | die->die_child_last = child_die; | |
| 2316 | } | |
| 2317 | else | |
| 2318 | { | |
| 2319 | die->die_child_last->die_sib = child_die; | |
| 2320 | die->die_child_last = child_die; | |
| 2321 | } | |
| 2322 | } | |
| 2323 | } | |
| 2324 | ||
| 2325 | /* Return a pointer to a newly created DIE node. */ | |
| 2326 | inline dw_die_ref | |
| 2327 | new_die (tag_value, parent_die) | |
| 2328 | register enum dwarf_tag tag_value; | |
| 2329 | register dw_die_ref parent_die; | |
| 2330 | { | |
| 2331 | register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node)); | |
| 2332 | if (die != NULL) | |
| 2333 | { | |
| 2334 | die->die_tag = tag_value; | |
| 2335 | die->die_abbrev = 0; | |
| 2336 | die->die_offset = 0; | |
| 2337 | die->die_child = NULL; | |
| 2338 | die->die_parent = NULL; | |
| 2339 | die->die_sib = NULL; | |
| 2340 | die->die_child_last = NULL; | |
| 2341 | die->die_attr = NULL; | |
| 2342 | die->die_attr_last = NULL; | |
| 2343 | if (parent_die != NULL) | |
| 2344 | { | |
| 2345 | add_child_die (parent_die, die); | |
| 2346 | } | |
| 2347 | } | |
| 2348 | return die; | |
| 2349 | } | |
| 2350 | ||
| 2351 | /* Return the DIE associated with the given type specifier. */ | |
| 2352 | inline dw_die_ref | |
| 2353 | lookup_type_die (type) | |
| 2354 | register tree type; | |
| 2355 | { | |
| 2356 | register unsigned type_id = TYPE_UID (type); | |
| 2357 | return (type_id < type_die_table_in_use) | |
| 2358 | ? type_die_table[type_id] : NULL; | |
| 2359 | } | |
| 2360 | ||
| 2361 | /* Equate a DIE to a given type specifier. */ | |
| 2362 | static void | |
| 2363 | equate_type_number_to_die (type, type_die) | |
| 2364 | register tree type; | |
| 2365 | register dw_die_ref type_die; | |
| 2366 | { | |
| 2367 | register unsigned type_id = TYPE_UID (type); | |
| a3f97cbb JW |
2368 | register unsigned num_allocated; |
| 2369 | if (type_id >= type_die_table_allocated) | |
| 2370 | { | |
| 2371 | num_allocated = (((type_id + 1) | |
| 2372 | + TYPE_DIE_TABLE_INCREMENT - 1) | |
| 2373 | / TYPE_DIE_TABLE_INCREMENT) | |
| 2374 | * TYPE_DIE_TABLE_INCREMENT; | |
| 2375 | type_die_table = (dw_die_ref *) xrealloc (type_die_table, | |
| 2376 | sizeof (dw_die_ref) * num_allocated); | |
| 2377 | bzero (&type_die_table[type_die_table_allocated], | |
| 2378 | (num_allocated - type_die_table_allocated) * sizeof (dw_die_ref)); | |
| 2379 | type_die_table_allocated = num_allocated; | |
| 2380 | } | |
| 2381 | if (type_id >= type_die_table_in_use) | |
| 2382 | { | |
| 2383 | type_die_table_in_use = (type_id + 1); | |
| 2384 | } | |
| 2385 | type_die_table[type_id] = type_die; | |
| 2386 | } | |
| 2387 | ||
| 2388 | /* Return the DIE associated with a given declaration. */ | |
| 2389 | inline dw_die_ref | |
| 2390 | lookup_decl_die (decl) | |
| 2391 | register tree decl; | |
| 2392 | { | |
| 2393 | register unsigned decl_id = DECL_UID (decl); | |
| 2394 | return (decl_id < decl_die_table_in_use) | |
| 2395 | ? decl_die_table[decl_id] : NULL; | |
| 2396 | } | |
| 2397 | ||
| 2398 | /* Equate a DIE to a particular declaration. */ | |
| 2399 | static void | |
| 2400 | equate_decl_number_to_die (decl, decl_die) | |
| 2401 | register tree decl; | |
| 2402 | register dw_die_ref decl_die; | |
| 2403 | { | |
| 2404 | register unsigned decl_id = DECL_UID (decl); | |
| 2405 | register unsigned i; | |
| 2406 | register unsigned num_allocated; | |
| 2407 | if (decl_id >= decl_die_table_allocated) | |
| 2408 | { | |
| 2409 | num_allocated = (((decl_id + 1) | |
| 2410 | + DECL_DIE_TABLE_INCREMENT - 1) | |
| 2411 | / DECL_DIE_TABLE_INCREMENT) | |
| 2412 | * DECL_DIE_TABLE_INCREMENT; | |
| 2413 | decl_die_table = (dw_die_ref *) xrealloc (decl_die_table, | |
| 2414 | sizeof (dw_die_ref) * num_allocated); | |
| 2415 | bzero (&decl_die_table[decl_die_table_allocated], | |
| 2416 | (num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref)); | |
| 2417 | decl_die_table_allocated = num_allocated; | |
| 2418 | } | |
| 2419 | if (decl_id >= decl_die_table_in_use) | |
| 2420 | { | |
| 2421 | decl_die_table_in_use = (decl_id + 1); | |
| 2422 | } | |
| 2423 | decl_die_table[decl_id] = decl_die; | |
| 2424 | } | |
| 2425 | ||
| 2426 | /* Return a pointer to a newly allocated location description. Location | |
| 2427 | descriptions are simple expression terms that can be strung | |
| 2428 | together to form more complicated location (address) descriptions. */ | |
| 2429 | inline dw_loc_descr_ref | |
| 2430 | new_loc_descr (op, oprnd1, oprnd2) | |
| 2431 | register enum dwarf_location_atom op; | |
| 2432 | register unsigned long oprnd1; | |
| 2433 | register unsigned long oprnd2; | |
| 2434 | { | |
| 2435 | register dw_loc_descr_ref descr = | |
| 2436 | (dw_loc_descr_ref) xmalloc (sizeof (dw_loc_descr_node)); | |
| 2437 | if (descr != NULL) | |
| 2438 | { | |
| 2439 | descr->dw_loc_next = NULL; | |
| 2440 | descr->dw_loc_opc = op; | |
| 2441 | descr->dw_loc_oprnd1.val_class = dw_val_class_unsigned_const; | |
| 2442 | descr->dw_loc_oprnd1.v.val_unsigned = oprnd1; | |
| 2443 | descr->dw_loc_oprnd2.val_class = dw_val_class_unsigned_const; | |
| 2444 | descr->dw_loc_oprnd2.v.val_unsigned = oprnd2; | |
| 2445 | } | |
| 2446 | return descr; | |
| 2447 | } | |
| 2448 | ||
| 2449 | /* Add a location description term to a location description expression. */ | |
| 2450 | inline void | |
| 2451 | add_loc_descr (list_head, descr) | |
| 2452 | register dw_loc_descr_ref *list_head; | |
| 2453 | register dw_loc_descr_ref descr; | |
| 2454 | { | |
| 2455 | register dw_loc_descr_ref *d; | |
| 2456 | /* find the end of the chain. */ | |
| 2457 | for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next) | |
| 2458 | { | |
| 2459 | /* nothing */ ; | |
| 2460 | } | |
| 2461 | *d = descr; | |
| 2462 | } | |
| 2463 | ||
| 2464 | /* Return a pointer to a newly allocated Call Frame Instruction. */ | |
| 2465 | inline dw_cfi_ref | |
| 2466 | new_cfi () | |
| 2467 | { | |
| 2468 | register dw_cfi_ref cfi = (dw_cfi_ref) xmalloc (sizeof (dw_cfi_node)); | |
| 2469 | if (cfi != NULL) | |
| 2470 | { | |
| 2471 | cfi->dw_cfi_next = NULL; | |
| 2472 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = 0; | |
| 2473 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num = 0; | |
| 2474 | } | |
| 2475 | return cfi; | |
| 2476 | } | |
| 2477 | ||
| 2478 | /* Add a Call Frame Instruction to list of instructions. */ | |
| 2479 | inline void | |
| 2480 | add_cfi (list_head, cfi) | |
| 2481 | register dw_cfi_ref *list_head; | |
| 2482 | register dw_cfi_ref cfi; | |
| 2483 | { | |
| 2484 | register dw_cfi_ref *p; | |
| 2485 | /* find the end of the chain. */ | |
| 2486 | for (p = list_head; (*p) != NULL; p = &(*p)->dw_cfi_next) | |
| 2487 | { | |
| 2488 | /* nothing */ ; | |
| 2489 | } | |
| 2490 | *p = cfi; | |
| 2491 | } | |
| 2492 | \f | |
| 2493 | /********* Print DWARF Internal Representation (debugging aids) ***************/ | |
| 2494 | ||
| 2495 | /* Keep track of the number of spaces used to indent the | |
| 2496 | output of the debugging routines that print the structure of | |
| 2497 | the DIE internal representation. */ | |
| 2498 | static int print_indent; | |
| 2499 | ||
| 2500 | /* Indent the line the number of spaces given by print_indent. */ | |
| 2501 | inline void | |
| 2502 | print_spaces (outfile) | |
| 2503 | FILE *outfile; | |
| 2504 | { | |
| 2505 | fprintf (outfile, "%*s", print_indent, ""); | |
| 2506 | } | |
| 2507 | ||
| 2508 | /* Print the information assoaciated with a given DIE, and its children. | |
| 2509 | This routine is a debugging aid only. */ | |
| 2510 | static void | |
| 2511 | print_die (die, outfile) | |
| 2512 | dw_die_ref die; | |
| 2513 | FILE *outfile; | |
| 2514 | { | |
| 2515 | register dw_attr_ref a; | |
| 2516 | register dw_die_ref c; | |
| 2517 | print_spaces (outfile); | |
| 2518 | fprintf (outfile, "DIE %4u: %s\n", | |
| 2519 | die->die_offset, dwarf_tag_name (die->die_tag)); | |
| 2520 | print_spaces (outfile); | |
| 2521 | fprintf (outfile, " abbrev id: %u", die->die_abbrev); | |
| 2522 | fprintf (outfile, " offset: %u\n", die->die_offset); | |
| 2523 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
| 2524 | { | |
| 2525 | print_spaces (outfile); | |
| 2526 | fprintf (outfile, " %s: ", dwarf_attr_name (a->dw_attr)); | |
| 2527 | switch (a->dw_attr_val.val_class) | |
| 2528 | { | |
| 2529 | case dw_val_class_addr: | |
| 2530 | fprintf (outfile, "address"); | |
| 2531 | break; | |
| 2532 | case dw_val_class_loc: | |
| 2533 | fprintf (outfile, "location descriptor"); | |
| 2534 | break; | |
| 2535 | case dw_val_class_const: | |
| 2536 | fprintf (outfile, "%d", a->dw_attr_val.v.val_int); | |
| 2537 | break; | |
| 2538 | case dw_val_class_unsigned_const: | |
| 2539 | fprintf (outfile, "%u", a->dw_attr_val.v.val_unsigned); | |
| 2540 | break; | |
| 2541 | case dw_val_class_double_const: | |
| 2542 | fprintf (outfile, "constant (%u,%u)", | |
| 2543 | a->dw_attr_val.v.val_dbl_const.dw_dbl_hi, | |
| 2544 | a->dw_attr_val.v.val_dbl_const.dw_dbl_low); | |
| 2545 | break; | |
| 2546 | case dw_val_class_flag: | |
| 2547 | fprintf (outfile, "%u", a->dw_attr_val.v.val_flag); | |
| 2548 | break; | |
| 2549 | case dw_val_class_die_ref: | |
| 2550 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
| 2551 | { | |
| 2552 | fprintf (outfile, "die -> %u", | |
| 2553 | a->dw_attr_val.v.val_die_ref->die_offset); | |
| 2554 | } | |
| 2555 | else | |
| 2556 | { | |
| 2557 | fprintf (outfile, "die -> <null>"); | |
| 2558 | } | |
| 2559 | break; | |
| 2560 | case dw_val_class_lbl_id: | |
| 2561 | fprintf (outfile, "label: %s", a->dw_attr_val.v.val_lbl_id); | |
| 2562 | break; | |
| 2563 | case dw_val_class_section_offset: | |
| 2564 | fprintf (outfile, "section: %s", a->dw_attr_val.v.val_section); | |
| 2565 | break; | |
| 2566 | case dw_val_class_str: | |
| 2567 | if (a->dw_attr_val.v.val_str != NULL) | |
| 2568 | { | |
| 2569 | fprintf (outfile, "\"%s\"", a->dw_attr_val.v.val_str); | |
| 2570 | } | |
| 2571 | else | |
| 2572 | { | |
| 2573 | fprintf (outfile, "<null>"); | |
| 2574 | } | |
| 2575 | break; | |
| 2576 | } | |
| 2577 | fprintf (outfile, "\n"); | |
| 2578 | } | |
| 2579 | if (die->die_child != NULL) | |
| 2580 | { | |
| 2581 | print_indent += 4; | |
| 2582 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
| 2583 | { | |
| 2584 | print_die (c, outfile); | |
| 2585 | } | |
| 2586 | print_indent -= 4; | |
| 2587 | } | |
| 2588 | } | |
| 2589 | ||
| 2590 | /* Print the contents of the source code line number correspondence table. | |
| 2591 | This routine is a debugging aid only. */ | |
| 2592 | static void | |
| 2593 | print_dwarf_line_table (outfile) | |
| 2594 | FILE *outfile; | |
| 2595 | { | |
| 2596 | register unsigned i; | |
| 2597 | register dw_line_info_ref line_info; | |
| 2598 | fprintf (outfile, "\n\nDWARF source line information\n"); | |
| 2599 | for (i = 1; i < line_info_table_in_use; ++i) | |
| 2600 | { | |
| 2601 | line_info = &line_info_table[i]; | |
| 2602 | fprintf (outfile, "%5d: ", i); | |
| 2603 | fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]); | |
| 2604 | fprintf (outfile, "%6d", line_info->dw_line_num); | |
| 2605 | fprintf (outfile, "\n"); | |
| 2606 | } | |
| 2607 | fprintf (outfile, "\n\n"); | |
| 2608 | } | |
| 2609 | ||
| 2610 | /* Print the information collected for a given DIE. */ | |
| 2611 | void | |
| 2612 | debug_dwarf_die (die) | |
| 2613 | dw_die_ref die; | |
| 2614 | { | |
| 2615 | print_die (die, stderr); | |
| 2616 | } | |
| 2617 | ||
| 2618 | /* Print all DWARF informaiton collected for the compilation unit. | |
| 2619 | This routine is a debugging aid only. */ | |
| 2620 | void | |
| 2621 | debug_dwarf () | |
| 2622 | { | |
| 2623 | print_indent = 0; | |
| 2624 | print_die (comp_unit_die, stderr); | |
| 2625 | print_dwarf_line_table (stderr); | |
| 2626 | } | |
| 2627 | ||
| 2628 | \f | |
| 2629 | /***************** DWARF Information Construction Support *********************/ | |
| 2630 | ||
| 2631 | /* Traverse the DIE, and add a sibling attribute if it may have the | |
| 2632 | effect of speeding up access to siblings. To save some space, | |
| 2633 | avoid generating sibling attributes for DIE's without children. */ | |
| 2634 | static void | |
| 2635 | add_sibling_attributes(die) | |
| 2636 | register dw_die_ref die; | |
| 2637 | { | |
| 2638 | register dw_die_ref c; | |
| 2639 | register dw_attr_ref attr; | |
| 2640 | if (die != comp_unit_die && die->die_child != NULL) | |
| 2641 | { | |
| 2642 | attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node)); | |
| 2643 | if (attr != NULL) | |
| 2644 | { | |
| 2645 | attr->dw_attr_next = NULL; | |
| 2646 | attr->dw_attr = DW_AT_sibling; | |
| 2647 | attr->dw_attr_val.val_class = dw_val_class_die_ref; | |
| 2648 | attr->dw_attr_val.v.val_die_ref = die->die_sib; | |
| 2649 | } | |
| 2650 | /* add the sibling link to the front of the attribute list. */ | |
| 2651 | attr->dw_attr_next = die->die_attr; | |
| 2652 | if (die->die_attr == NULL) | |
| 2653 | { | |
| 2654 | die->die_attr_last = attr; | |
| 2655 | } | |
| 2656 | die->die_attr = attr; | |
| 2657 | } | |
| 2658 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
| 2659 | { | |
| 2660 | add_sibling_attributes (c); | |
| 2661 | } | |
| 2662 | } | |
| 2663 | ||
| 2664 | /* The format of each DIE (and its attribute value pairs) | |
| 2665 | is encoded in an abbreviation table. This routine builds the | |
| 2666 | abbreviation table and assigns a unique abbreviation id for | |
| 2667 | each abbreviation entry. The children of each die are visited | |
| 2668 | recursively. */ | |
| 2669 | static void | |
| 2670 | build_abbrev_table (die) | |
| 2671 | register dw_die_ref die; | |
| 2672 | { | |
| 2673 | register unsigned long abbrev_id; | |
| 2674 | register unsigned long n_alloc; | |
| 2675 | register dw_die_ref c; | |
| 2676 | register dw_attr_ref d_attr, a_attr; | |
| 2677 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
| 2678 | { | |
| 2679 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
| 2680 | if (abbrev->die_tag == die->die_tag) | |
| 2681 | { | |
| 2682 | if ((abbrev->die_child != NULL) == (die->die_child != NULL)) | |
| 2683 | { | |
| 2684 | a_attr = abbrev->die_attr; | |
| 2685 | d_attr = die->die_attr; | |
| 2686 | while (a_attr != NULL && d_attr != NULL) | |
| 2687 | { | |
| 2688 | if ((a_attr->dw_attr != d_attr->dw_attr) | |
| f37230f0 JM |
2689 | || (value_format (&a_attr->dw_attr_val) |
| 2690 | != value_format (&d_attr->dw_attr_val))) | |
| a3f97cbb JW |
2691 | { |
| 2692 | break; | |
| 2693 | } | |
| 2694 | a_attr = a_attr->dw_attr_next; | |
| 2695 | d_attr = d_attr->dw_attr_next; | |
| 2696 | } | |
| 2697 | if (a_attr == NULL && d_attr == NULL) | |
| 2698 | { | |
| 2699 | break; | |
| 2700 | } | |
| 2701 | } | |
| 2702 | } | |
| 2703 | } | |
| 2704 | if (abbrev_id >= abbrev_die_table_in_use) | |
| 2705 | { | |
| 2706 | if (abbrev_die_table_in_use >= abbrev_die_table_allocated) | |
| 2707 | { | |
| 2708 | n_alloc = abbrev_die_table_allocated + ABBREV_DIE_TABLE_INCREMENT; | |
| 2709 | abbrev_die_table = (dw_die_ref *) | |
| 2710 | xmalloc (abbrev_die_table, | |
| 2711 | sizeof (dw_die_ref) * n_alloc); | |
| 2712 | bzero (&abbrev_die_table[abbrev_die_table_allocated], | |
| 2713 | (n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref)); | |
| 2714 | abbrev_die_table_allocated = n_alloc; | |
| 2715 | } | |
| 2716 | ++abbrev_die_table_in_use; | |
| 2717 | abbrev_die_table[abbrev_id] = die; | |
| 2718 | } | |
| 2719 | die->die_abbrev = abbrev_id; | |
| 2720 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
| 2721 | { | |
| 2722 | build_abbrev_table (c); | |
| 2723 | } | |
| 2724 | } | |
| 2725 | ||
| 2726 | \f | |
| 2727 | /********************** DWARF Information Sizing *****************************/ | |
| 2728 | ||
| 2729 | /* Return the size of an unsigned LEB128 quantity. */ | |
| 2730 | inline unsigned long | |
| 2731 | size_of_uleb128 (value) | |
| 2732 | register unsigned long value; | |
| 2733 | { | |
| 2734 | register unsigned long size = 0; | |
| 2735 | register unsigned byte; | |
| 2736 | do | |
| 2737 | { | |
| 2738 | byte = (value & 0x7f); | |
| 2739 | value >>= 7; | |
| 2740 | size += 1; | |
| 2741 | } | |
| 2742 | while (value != 0); | |
| 2743 | return size; | |
| 2744 | } | |
| 2745 | ||
| 2746 | /* Return the size of a signed LEB128 quantity. */ | |
| 2747 | inline unsigned long | |
| 2748 | size_of_sleb128 (value) | |
| 2749 | register long value; | |
| 2750 | { | |
| 2751 | register unsigned long size = 0; | |
| 2752 | register unsigned byte; | |
| 2753 | do | |
| 2754 | { | |
| 2755 | byte = (value & 0x7f); | |
| 2756 | value >>= 7; | |
| 2757 | size += 1; | |
| 2758 | } | |
| 2759 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
| 2760 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
| 2761 | return size; | |
| 2762 | } | |
| 2763 | ||
| 2764 | /* Return the size of a string, including the null byte. */ | |
| 2765 | static unsigned long | |
| 2766 | size_of_string (str) | |
| 2767 | register char *str; | |
| 2768 | { | |
| 2769 | register unsigned long size = 0; | |
| 2770 | register unsigned long slen = strlen (str); | |
| 2771 | register unsigned long i; | |
| 2772 | register unsigned c; | |
| 2773 | for (i = 0; i < slen; ++i) | |
| 2774 | { | |
| 2775 | c = str[i]; | |
| 2776 | if (c == '\\') | |
| 2777 | { | |
| 2778 | ++i; | |
| 2779 | } | |
| 2780 | size += 1; | |
| 2781 | } | |
| 2782 | /* Null terminator. */ | |
| 2783 | size += 1; | |
| 2784 | return size; | |
| 2785 | } | |
| 2786 | ||
| 2787 | /* Return the size of a location descriptor. */ | |
| 2788 | static unsigned long | |
| 2789 | size_of_loc_descr (loc) | |
| 2790 | register dw_loc_descr_ref loc; | |
| 2791 | { | |
| 2792 | register unsigned long size = 1; | |
| 2793 | switch (loc->dw_loc_opc) | |
| 2794 | { | |
| 2795 | case DW_OP_addr: | |
| 2796 | size += PTR_SIZE; | |
| 2797 | break; | |
| 2798 | case DW_OP_const1u: | |
| 2799 | case DW_OP_const1s: | |
| 2800 | size += 1; | |
| 2801 | break; | |
| 2802 | case DW_OP_const2u: | |
| 2803 | case DW_OP_const2s: | |
| 2804 | size += 2; | |
| 2805 | break; | |
| 2806 | case DW_OP_const4u: | |
| 2807 | case DW_OP_const4s: | |
| 2808 | size += 4; | |
| 2809 | break; | |
| 2810 | case DW_OP_const8u: | |
| 2811 | case DW_OP_const8s: | |
| 2812 | size += 8; | |
| 2813 | break; | |
| 2814 | case DW_OP_constu: | |
| 2815 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
| 2816 | break; | |
| 2817 | case DW_OP_consts: | |
| 2818 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
| 2819 | break; | |
| 2820 | case DW_OP_pick: | |
| 2821 | size += 1; | |
| 2822 | break; | |
| 2823 | case DW_OP_plus_uconst: | |
| 2824 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
| 2825 | break; | |
| 2826 | case DW_OP_skip: | |
| 2827 | case DW_OP_bra: | |
| 2828 | size += 2; | |
| 2829 | break; | |
| 2830 | case DW_OP_breg0: | |
| 2831 | case DW_OP_breg1: | |
| 2832 | case DW_OP_breg2: | |
| 2833 | case DW_OP_breg3: | |
| 2834 | case DW_OP_breg4: | |
| 2835 | case DW_OP_breg5: | |
| 2836 | case DW_OP_breg6: | |
| 2837 | case DW_OP_breg7: | |
| 2838 | case DW_OP_breg8: | |
| 2839 | case DW_OP_breg9: | |
| 2840 | case DW_OP_breg10: | |
| 2841 | case DW_OP_breg11: | |
| 2842 | case DW_OP_breg12: | |
| 2843 | case DW_OP_breg13: | |
| 2844 | case DW_OP_breg14: | |
| 2845 | case DW_OP_breg15: | |
| 2846 | case DW_OP_breg16: | |
| 2847 | case DW_OP_breg17: | |
| 2848 | case DW_OP_breg18: | |
| 2849 | case DW_OP_breg19: | |
| 2850 | case DW_OP_breg20: | |
| 2851 | case DW_OP_breg21: | |
| 2852 | case DW_OP_breg22: | |
| 2853 | case DW_OP_breg23: | |
| 2854 | case DW_OP_breg24: | |
| 2855 | case DW_OP_breg25: | |
| 2856 | case DW_OP_breg26: | |
| 2857 | case DW_OP_breg27: | |
| 2858 | case DW_OP_breg28: | |
| 2859 | case DW_OP_breg29: | |
| 2860 | case DW_OP_breg30: | |
| 2861 | case DW_OP_breg31: | |
| 2862 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
| 2863 | break; | |
| 2864 | case DW_OP_regx: | |
| 2865 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
| 2866 | break; | |
| 2867 | case DW_OP_fbreg: | |
| 2868 | size += size_of_sleb128 (loc->dw_loc_oprnd1.v.val_int); | |
| 2869 | break; | |
| 2870 | case DW_OP_bregx: | |
| 2871 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
| 2872 | size += size_of_sleb128 (loc->dw_loc_oprnd2.v.val_int); | |
| 2873 | break; | |
| 2874 | case DW_OP_piece: | |
| 2875 | size += size_of_uleb128 (loc->dw_loc_oprnd1.v.val_unsigned); | |
| 2876 | break; | |
| 2877 | case DW_OP_deref_size: | |
| 2878 | case DW_OP_xderef_size: | |
| 2879 | size += 1; | |
| 2880 | break; | |
| 2881 | default: | |
| 2882 | break; | |
| 2883 | } | |
| 2884 | return size; | |
| 2885 | } | |
| 2886 | ||
| f37230f0 JM |
2887 | /* Return the size of a series of location descriptors. */ |
| 2888 | static unsigned long | |
| 2889 | size_of_locs (loc) | |
| 2890 | register dw_loc_descr_ref loc; | |
| 2891 | { | |
| 2892 | register unsigned long size = 0; | |
| 2893 | for (; loc != NULL; loc = loc->dw_loc_next) | |
| 2894 | size += size_of_loc_descr (loc); | |
| 2895 | return size; | |
| 2896 | } | |
| 2897 | ||
| 7e23cb16 JM |
2898 | /* Return the power-of-two number of bytes necessary to represent VALUE. */ |
| 2899 | static int | |
| 2900 | constant_size (value) | |
| 2901 | long unsigned value; | |
| 2902 | { | |
| 2903 | int log; | |
| 2904 | ||
| 2905 | if (value == 0) | |
| 2906 | log = 0; | |
| 2907 | else | |
| 2908 | log = floor_log2 (value); | |
| 2909 | ||
| 2910 | log = log / 8; | |
| 2911 | log = 1 << (floor_log2 (log) + 1); | |
| 2912 | ||
| 2913 | return log; | |
| 2914 | } | |
| 2915 | ||
| a3f97cbb JW |
2916 | /* Return the size of a DIE, as it is represented in the |
| 2917 | .debug_info section. */ | |
| 2918 | static unsigned long | |
| 2919 | size_of_die (die) | |
| 2920 | register dw_die_ref die; | |
| 2921 | { | |
| 2922 | register unsigned long size = 0; | |
| 2923 | register dw_attr_ref a; | |
| a3f97cbb JW |
2924 | size += size_of_uleb128 (die->die_abbrev); |
| 2925 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
| 2926 | { | |
| 2927 | switch (a->dw_attr_val.val_class) | |
| 2928 | { | |
| 2929 | case dw_val_class_addr: | |
| 7e23cb16 | 2930 | size += PTR_SIZE; |
| a3f97cbb JW |
2931 | break; |
| 2932 | case dw_val_class_loc: | |
| f37230f0 JM |
2933 | { |
| 2934 | register unsigned long lsize | |
| 2935 | = size_of_locs (a->dw_attr_val.v.val_loc); | |
| 2936 | ||
| 2937 | /* Block length. */ | |
| 2938 | size += constant_size (lsize); | |
| 2939 | size += lsize; | |
| 2940 | } | |
| a3f97cbb JW |
2941 | break; |
| 2942 | case dw_val_class_const: | |
| 2943 | size += 4; | |
| 2944 | break; | |
| 2945 | case dw_val_class_unsigned_const: | |
| 7e23cb16 | 2946 | size += constant_size (a->dw_attr_val.v.val_unsigned); |
| a3f97cbb JW |
2947 | break; |
| 2948 | case dw_val_class_double_const: | |
| 2949 | size += 8; | |
| 2950 | break; | |
| 2951 | case dw_val_class_flag: | |
| 2952 | size += 1; | |
| 2953 | break; | |
| 2954 | case dw_val_class_die_ref: | |
| 7e23cb16 | 2955 | size += DWARF_OFFSET_SIZE; |
| a3f97cbb JW |
2956 | break; |
| 2957 | case dw_val_class_fde_ref: | |
| 7e23cb16 | 2958 | size += DWARF_OFFSET_SIZE; |
| a3f97cbb JW |
2959 | break; |
| 2960 | case dw_val_class_lbl_id: | |
| 7e23cb16 | 2961 | size += PTR_SIZE; |
| a3f97cbb JW |
2962 | break; |
| 2963 | case dw_val_class_section_offset: | |
| 7e23cb16 | 2964 | size += DWARF_OFFSET_SIZE; |
| a3f97cbb JW |
2965 | break; |
| 2966 | case dw_val_class_str: | |
| 2967 | size += size_of_string (a->dw_attr_val.v.val_str); | |
| 2968 | break; | |
| 2969 | default: | |
| 2970 | abort (); | |
| 2971 | } | |
| 2972 | } | |
| 2973 | return size; | |
| 2974 | } | |
| 2975 | ||
| 2976 | /* Size the debgging information associted with a given DIE. | |
| 2977 | Visits the DIE's children recursively. Updates the global | |
| 2978 | variable next_die_offset, on each time through. Uses the | |
| 2979 | current value of next_die_offset to updete the die_offset | |
| 2980 | field in each DIE. */ | |
| 2981 | static void | |
| 2982 | calc_die_sizes (die) | |
| 2983 | dw_die_ref die; | |
| 2984 | { | |
| 2985 | register dw_die_ref c; | |
| a3f97cbb JW |
2986 | die->die_offset = next_die_offset; |
| 2987 | next_die_offset += size_of_die (die); | |
| 2988 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
| 2989 | { | |
| 2990 | calc_die_sizes (c); | |
| 2991 | } | |
| 2992 | if (die->die_child != NULL) | |
| 2993 | { | |
| 2994 | /* Count the null byte used to terminate sibling lists. */ | |
| 2995 | next_die_offset += 1; | |
| 2996 | } | |
| 2997 | } | |
| 2998 | ||
| 2999 | /* Return the size of the line information prolog generated for the | |
| 3000 | compilation unit. */ | |
| 3001 | static unsigned long | |
| 3002 | size_of_line_prolog () | |
| 3003 | { | |
| 3004 | register unsigned long size; | |
| a3f97cbb JW |
3005 | register unsigned long ft_index; |
| 3006 | size = DWARF_LINE_PROLOG_HEADER_SIZE; | |
| 3007 | /* Count the size of the table giving number of args for each | |
| 3008 | standard opcode. */ | |
| 3009 | size += DWARF_LINE_OPCODE_BASE - 1; | |
| 3010 | /* Include directory table is empty (at present). Count only the | |
| 3011 | the null byte used to terminate the table. */ | |
| 3012 | size += 1; | |
| 3013 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) | |
| 3014 | { | |
| 3015 | /* File name entry. */ | |
| 3016 | size += size_of_string (file_table[ft_index]); | |
| 3017 | /* Include directory index. */ | |
| 3018 | size += size_of_uleb128 (0); | |
| 3019 | /* Modification time. */ | |
| 3020 | size += size_of_uleb128 (0); | |
| 3021 | /* File length in bytes. */ | |
| 3022 | size += size_of_uleb128 (0); | |
| 3023 | } | |
| 3024 | /* Count the file table terminator. */ | |
| 3025 | size += 1; | |
| 3026 | return size; | |
| 3027 | } | |
| 3028 | ||
| 3029 | /* Return the size of the line information generated for this | |
| 3030 | compilation unit. */ | |
| 3031 | static unsigned long | |
| 3032 | size_of_line_info () | |
| 3033 | { | |
| 3034 | register unsigned long size; | |
| a3f97cbb JW |
3035 | register unsigned long lt_index; |
| 3036 | register unsigned long current_line; | |
| 3037 | register long line_offset; | |
| 3038 | register long line_delta; | |
| 3039 | register unsigned long current_file; | |
| e90b62db | 3040 | register unsigned long function; |
| a3f97cbb JW |
3041 | /* Version number. */ |
| 3042 | size = 2; | |
| 3043 | /* Prolog length specifier. */ | |
| 7e23cb16 | 3044 | size += DWARF_OFFSET_SIZE; |
| a3f97cbb JW |
3045 | /* Prolog. */ |
| 3046 | size += size_of_line_prolog (); | |
| 3047 | /* Set address register instruction. */ | |
| 3048 | size += 1 + size_of_uleb128 (1 + PTR_SIZE) | |
| 3049 | + 1 + PTR_SIZE; | |
| 3050 | current_file = 1; | |
| 3051 | current_line = 1; | |
| 3052 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) | |
| 3053 | { | |
| e90b62db | 3054 | register dw_line_info_ref line_info; |
| a3f97cbb JW |
3055 | /* Advance pc instruction. */ |
| 3056 | size += 1 + 2; | |
| 3057 | line_info = &line_info_table[lt_index]; | |
| 3058 | if (line_info->dw_file_num != current_file) | |
| 3059 | { | |
| 3060 | /* Set file number instruction. */ | |
| 3061 | size += 1; | |
| 3062 | current_file = line_info->dw_file_num; | |
| 3063 | size += size_of_uleb128 (current_file); | |
| 3064 | } | |
| 3065 | if (line_info->dw_line_num != current_line) | |
| 3066 | { | |
| 3067 | line_offset = line_info->dw_line_num - current_line; | |
| 3068 | line_delta = line_offset - DWARF_LINE_BASE; | |
| 3069 | current_line = line_info->dw_line_num; | |
| 3070 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
| 3071 | { | |
| 3072 | /* 1-byte special line number instruction. */ | |
| 3073 | size += 1; | |
| 3074 | } | |
| 3075 | else | |
| 3076 | { | |
| 3077 | /* Advance line instruction. */ | |
| 3078 | size += 1; | |
| 3079 | size += size_of_sleb128 (line_offset); | |
| 3080 | /* Generate line entry instruction. */ | |
| 3081 | size += 1; | |
| 3082 | } | |
| 3083 | } | |
| 3084 | } | |
| bdb669cb JM |
3085 | /* Advance pc instruction. */ |
| 3086 | size += 1 + 2; | |
| a3f97cbb JW |
3087 | /* End of line number info. marker. */ |
| 3088 | size += 1 + size_of_uleb128 (1) + 1; | |
| e90b62db JM |
3089 | function = 0; |
| 3090 | current_file = 1; | |
| 3091 | current_line = 1; | |
| 3092 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
| 3093 | { | |
| 3094 | register dw_separate_line_info_ref line_info | |
| 3095 | = &separate_line_info_table[lt_index]; | |
| 3096 | if (function != line_info->function) | |
| 3097 | { | |
| 3098 | function = line_info->function; | |
| 3099 | /* Set address register instruction. */ | |
| 3100 | size += 1 + size_of_uleb128 (1 + PTR_SIZE) | |
| 3101 | + 1 + PTR_SIZE; | |
| 3102 | } | |
| 3103 | else | |
| 3104 | { | |
| 3105 | /* Advance pc instruction. */ | |
| 3106 | size += 1 + 2; | |
| 3107 | } | |
| 3108 | if (line_info->dw_file_num != current_file) | |
| 3109 | { | |
| 3110 | /* Set file number instruction. */ | |
| 3111 | size += 1; | |
| 3112 | current_file = line_info->dw_file_num; | |
| 3113 | size += size_of_uleb128 (current_file); | |
| 3114 | } | |
| 3115 | if (line_info->dw_line_num != current_line) | |
| 3116 | { | |
| 3117 | line_offset = line_info->dw_line_num - current_line; | |
| 3118 | line_delta = line_offset - DWARF_LINE_BASE; | |
| 3119 | current_line = line_info->dw_line_num; | |
| 3120 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
| 3121 | { | |
| 3122 | /* 1-byte special line number instruction. */ | |
| 3123 | size += 1; | |
| 3124 | } | |
| 3125 | else | |
| 3126 | { | |
| 3127 | /* Advance line instruction. */ | |
| 3128 | size += 1; | |
| 3129 | size += size_of_sleb128 (line_offset); | |
| 3130 | /* Generate line entry instruction. */ | |
| 3131 | size += 1; | |
| 3132 | } | |
| 3133 | } | |
| 3134 | ++lt_index; | |
| 3135 | ||
| 3136 | /* If we're done with a function, end its sequence. */ | |
| 3137 | if (lt_index == separate_line_info_table_in_use | |
| 3138 | || separate_line_info_table[lt_index].function != function) | |
| 3139 | { | |
| 3140 | current_file = 1; | |
| 3141 | current_line = 1; | |
| 3142 | /* Advance pc instruction. */ | |
| 3143 | size += 1 + 2; | |
| 3144 | /* End of line number info. marker. */ | |
| 3145 | size += 1 + size_of_uleb128 (1) + 1; | |
| 3146 | } | |
| 3147 | } | |
| a3f97cbb JW |
3148 | return size; |
| 3149 | } | |
| 3150 | ||
| 3151 | /* Return the size of the .debug_pubnames table generated for the | |
| 3152 | compilation unit. */ | |
| 3153 | static unsigned long | |
| 3154 | size_of_pubnames () | |
| 3155 | { | |
| a3f97cbb | 3156 | register unsigned long size; |
| d291dd49 JM |
3157 | register unsigned i; |
| 3158 | ||
| a3f97cbb | 3159 | size = DWARF_PUBNAMES_HEADER_SIZE; |
| d291dd49 | 3160 | for (i = 0; i < pubname_table_in_use; ++i) |
| a3f97cbb | 3161 | { |
| d291dd49 | 3162 | register pubname_ref p = &pubname_table[i]; |
| 7e23cb16 | 3163 | size += DWARF_OFFSET_SIZE + size_of_string (p->name); |
| a3f97cbb | 3164 | } |
| 7e23cb16 | 3165 | size += DWARF_OFFSET_SIZE; |
| a3f97cbb JW |
3166 | return size; |
| 3167 | } | |
| 3168 | ||
| 3169 | /* Return the size of the information in the .debug_aranges seciton. */ | |
| 3170 | static unsigned long | |
| 3171 | size_of_aranges () | |
| 3172 | { | |
| 3173 | register unsigned long size; | |
| 3174 | size = DWARF_ARANGES_HEADER_SIZE; | |
| 3175 | /* Count the address/length pair for this compilation unit. */ | |
| 7e23cb16 JM |
3176 | size += 2 * PTR_SIZE; |
| 3177 | size += 2 * PTR_SIZE * arange_table_in_use; | |
| a3f97cbb | 3178 | /* Count the two zero words used to terminated the address range table. */ |
| 7e23cb16 | 3179 | size += 2 * PTR_SIZE; |
| a3f97cbb JW |
3180 | return size; |
| 3181 | } | |
| 3182 | \f | |
| 3183 | /**************** DWARF Debug Information Output *****************************/ | |
| 3184 | ||
| 3185 | /* Output an unsigned LEB128 quantity. */ | |
| 3186 | static void | |
| 3187 | output_uleb128 (value) | |
| 3188 | register unsigned long value; | |
| 3189 | { | |
| 3190 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
| 3191 | do | |
| 3192 | { | |
| 3193 | register unsigned byte = (value & 0x7f); | |
| 3194 | value >>= 7; | |
| 3195 | if (value != 0) | |
| 3196 | { | |
| 3197 | /* More bytes to follow. */ | |
| 3198 | byte |= 0x80; | |
| 3199 | } | |
| 3200 | fprintf (asm_out_file, "0x%x", byte); | |
| 3201 | if (value != 0) | |
| 3202 | { | |
| 3203 | fprintf (asm_out_file, ","); | |
| 3204 | } | |
| 3205 | } | |
| 3206 | while (value != 0); | |
| 3207 | } | |
| 3208 | ||
| 3209 | /* Output an signed LEB128 quantity. */ | |
| 3210 | static void | |
| 3211 | output_sleb128 (value) | |
| 3212 | register long value; | |
| 3213 | { | |
| 3214 | register int more; | |
| 3215 | register unsigned byte; | |
| 3216 | fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP); | |
| 3217 | do | |
| 3218 | { | |
| 3219 | byte = (value & 0x7f); | |
| 3220 | /* arithmetic shift */ | |
| 3221 | value >>= 7; | |
| 3222 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
| 3223 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
| 3224 | if (more) | |
| 3225 | { | |
| 3226 | byte |= 0x80; | |
| 3227 | } | |
| 3228 | fprintf (asm_out_file, "0x%x", byte); | |
| 3229 | if (more) | |
| 3230 | { | |
| 3231 | fprintf (asm_out_file, ","); | |
| 3232 | } | |
| 3233 | } | |
| 3234 | while (more); | |
| 3235 | } | |
| 3236 | ||
| f37230f0 JM |
3237 | /* Select the encoding of an attribute value. */ |
| 3238 | static enum dwarf_form | |
| 3239 | value_format (v) | |
| a3f97cbb JW |
3240 | dw_val_ref v; |
| 3241 | { | |
| a3f97cbb JW |
3242 | switch (v->val_class) |
| 3243 | { | |
| 3244 | case dw_val_class_addr: | |
| f37230f0 | 3245 | return DW_FORM_addr; |
| a3f97cbb | 3246 | case dw_val_class_loc: |
| f37230f0 JM |
3247 | switch (constant_size (size_of_locs (v->v.val_loc))) |
| 3248 | { | |
| 3249 | case 1: | |
| 3250 | return DW_FORM_block1; | |
| 3251 | case 2: | |
| 3252 | return DW_FORM_block2; | |
| 3253 | default: | |
| 3254 | abort (); | |
| 3255 | } | |
| a3f97cbb | 3256 | case dw_val_class_const: |
| f37230f0 | 3257 | return DW_FORM_data4; |
| a3f97cbb | 3258 | case dw_val_class_unsigned_const: |
| 7e23cb16 JM |
3259 | switch (constant_size (v->v.val_unsigned)) |
| 3260 | { | |
| 3261 | case 1: | |
| f37230f0 | 3262 | return DW_FORM_data1; |
| 7e23cb16 | 3263 | case 2: |
| f37230f0 | 3264 | return DW_FORM_data2; |
| 7e23cb16 | 3265 | case 4: |
| f37230f0 | 3266 | return DW_FORM_data4; |
| 7e23cb16 JM |
3267 | default: |
| 3268 | abort (); | |
| 3269 | } | |
| a3f97cbb | 3270 | case dw_val_class_double_const: |
| f37230f0 | 3271 | return DW_FORM_data8; |
| a3f97cbb | 3272 | case dw_val_class_flag: |
| f37230f0 | 3273 | return DW_FORM_flag; |
| a3f97cbb | 3274 | case dw_val_class_die_ref: |
| f37230f0 | 3275 | return DW_FORM_ref; |
| a3f97cbb | 3276 | case dw_val_class_fde_ref: |
| f37230f0 | 3277 | return DW_FORM_data; |
| a3f97cbb | 3278 | case dw_val_class_lbl_id: |
| f37230f0 | 3279 | return DW_FORM_addr; |
| a3f97cbb | 3280 | case dw_val_class_section_offset: |
| f37230f0 | 3281 | return DW_FORM_data; |
| a3f97cbb | 3282 | case dw_val_class_str: |
| f37230f0 | 3283 | return DW_FORM_string; |
| a3f97cbb JW |
3284 | default: |
| 3285 | abort (); | |
| 3286 | } | |
| f37230f0 JM |
3287 | } |
| 3288 | ||
| 3289 | /* Output the encoding of an attribute value. */ | |
| 3290 | static void | |
| 3291 | output_value_format (v) | |
| 3292 | dw_val_ref v; | |
| 3293 | { | |
| 3294 | enum dwarf_form form = value_format (v); | |
| a3f97cbb JW |
3295 | output_uleb128 (form); |
| 3296 | if (flag_verbose_asm) | |
| 3297 | { | |
| 3298 | fprintf (asm_out_file, "\t%s %s", | |
| 3299 | ASM_COMMENT_START, dwarf_form_name (form)); | |
| 3300 | } | |
| 3301 | fputc ('\n', asm_out_file); | |
| 3302 | } | |
| 3303 | ||
| 3304 | /* Output the .debug_abbrev section which defines the DIE abbreviation | |
| 3305 | table. */ | |
| 3306 | static void | |
| 3307 | output_abbrev_section () | |
| 3308 | { | |
| 3309 | unsigned long abbrev_id; | |
| 3310 | dw_attr_ref a_attr; | |
| 3311 | for (abbrev_id = 1; abbrev_id < abbrev_die_table_in_use; ++abbrev_id) | |
| 3312 | { | |
| 3313 | register dw_die_ref abbrev = abbrev_die_table[abbrev_id]; | |
| 3314 | output_uleb128 (abbrev_id); | |
| 3315 | if (flag_verbose_asm) | |
| 3316 | { | |
| 3317 | fprintf (asm_out_file, "\t%s abbrev code = %u", | |
| 3318 | ASM_COMMENT_START, abbrev_id); | |
| 3319 | } | |
| 3320 | fputc ('\n', asm_out_file); | |
| 3321 | output_uleb128 (abbrev->die_tag); | |
| 3322 | if (flag_verbose_asm) | |
| 3323 | { | |
| 3324 | fprintf (asm_out_file, "\t%s TAG: %s", | |
| 3325 | ASM_COMMENT_START, dwarf_tag_name (abbrev->die_tag)); | |
| 3326 | } | |
| 3327 | fputc ('\n', asm_out_file); | |
| 3328 | fprintf (asm_out_file, "\t%s\t0x%x", ASM_BYTE_OP, | |
| 3329 | (abbrev->die_child != NULL) | |
| 3330 | ? DW_children_yes : DW_children_no); | |
| 3331 | if (flag_verbose_asm) | |
| 3332 | { | |
| 3333 | fprintf (asm_out_file, "\t%s %s", | |
| 3334 | ASM_COMMENT_START, | |
| 3335 | (abbrev->die_child != NULL) | |
| 3336 | ? "DW_children_yes" : "DW_children_no"); | |
| 3337 | } | |
| 3338 | fputc ('\n', asm_out_file); | |
| 3339 | for (a_attr = abbrev->die_attr; a_attr != NULL; | |
| 3340 | a_attr = a_attr->dw_attr_next) | |
| 3341 | { | |
| 3342 | output_uleb128 (a_attr->dw_attr); | |
| 3343 | if (flag_verbose_asm) | |
| 3344 | { | |
| 3345 | fprintf (asm_out_file, "\t%s %s", | |
| 3346 | ASM_COMMENT_START, | |
| 3347 | dwarf_attr_name (a_attr->dw_attr)); | |
| 3348 | } | |
| 3349 | fputc ('\n', asm_out_file); | |
| 3350 | output_value_format (&a_attr->dw_attr_val); | |
| 3351 | } | |
| 3352 | fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP); | |
| 3353 | } | |
| 3354 | } | |
| 3355 | ||
| 3356 | /* Output location description stack opcode's operands (if any). */ | |
| 3357 | static void | |
| 3358 | output_loc_operands (loc) | |
| 3359 | register dw_loc_descr_ref loc; | |
| 3360 | { | |
| 3361 | register dw_val_ref val1 = &loc->dw_loc_oprnd1; | |
| 3362 | register dw_val_ref val2 = &loc->dw_loc_oprnd2; | |
| 3363 | switch (loc->dw_loc_opc) | |
| 3364 | { | |
| 3365 | case DW_OP_addr: | |
| 3366 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr); | |
| 3367 | fputc ('\n', asm_out_file); | |
| 3368 | break; | |
| 3369 | case DW_OP_const1u: | |
| 3370 | case DW_OP_const1s: | |
| 3371 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
| 3372 | fputc ('\n', asm_out_file); | |
| 3373 | break; | |
| 3374 | case DW_OP_const2u: | |
| 3375 | case DW_OP_const2s: | |
| 3376 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
| 3377 | fputc ('\n', asm_out_file); | |
| 3378 | break; | |
| 3379 | case DW_OP_const4u: | |
| 3380 | case DW_OP_const4s: | |
| 3381 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int); | |
| 3382 | fputc ('\n', asm_out_file); | |
| 3383 | break; | |
| 3384 | case DW_OP_const8u: | |
| 3385 | case DW_OP_const8s: | |
| 3386 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
| 3387 | val1->v.val_dbl_const.dw_dbl_hi, | |
| 3388 | val2->v.val_dbl_const.dw_dbl_low); | |
| 3389 | fputc ('\n', asm_out_file); | |
| 3390 | break; | |
| 3391 | case DW_OP_constu: | |
| 3392 | output_uleb128 (val1->v.val_unsigned); | |
| 3393 | fputc ('\n', asm_out_file); | |
| 3394 | break; | |
| 3395 | case DW_OP_consts: | |
| 3396 | output_sleb128 (val1->v.val_unsigned); | |
| 3397 | fputc ('\n', asm_out_file); | |
| 3398 | break; | |
| 3399 | case DW_OP_pick: | |
| 3400 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int); | |
| 3401 | fputc ('\n', asm_out_file); | |
| 3402 | break; | |
| 3403 | case DW_OP_plus_uconst: | |
| 3404 | output_uleb128 (val1->v.val_unsigned); | |
| 3405 | fputc ('\n', asm_out_file); | |
| 3406 | break; | |
| 3407 | case DW_OP_skip: | |
| 3408 | case DW_OP_bra: | |
| 3409 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int); | |
| 3410 | fputc ('\n', asm_out_file); | |
| 3411 | break; | |
| 3412 | case DW_OP_breg0: | |
| 3413 | case DW_OP_breg1: | |
| 3414 | case DW_OP_breg2: | |
| 3415 | case DW_OP_breg3: | |
| 3416 | case DW_OP_breg4: | |
| 3417 | case DW_OP_breg5: | |
| 3418 | case DW_OP_breg6: | |
| 3419 | case DW_OP_breg7: | |
| 3420 | case DW_OP_breg8: | |
| 3421 | case DW_OP_breg9: | |
| 3422 | case DW_OP_breg10: | |
| 3423 | case DW_OP_breg11: | |
| 3424 | case DW_OP_breg12: | |
| 3425 | case DW_OP_breg13: | |
| 3426 | case DW_OP_breg14: | |
| 3427 | case DW_OP_breg15: | |
| 3428 | case DW_OP_breg16: | |
| 3429 | case DW_OP_breg17: | |
| 3430 | case DW_OP_breg18: | |
| 3431 | case DW_OP_breg19: | |
| 3432 | case DW_OP_breg20: | |
| 3433 | case DW_OP_breg21: | |
| 3434 | case DW_OP_breg22: | |
| 3435 | case DW_OP_breg23: | |
| 3436 | case DW_OP_breg24: | |
| 3437 | case DW_OP_breg25: | |
| 3438 | case DW_OP_breg26: | |
| 3439 | case DW_OP_breg27: | |
| 3440 | case DW_OP_breg28: | |
| 3441 | case DW_OP_breg29: | |
| 3442 | case DW_OP_breg30: | |
| 3443 | case DW_OP_breg31: | |
| 3444 | output_sleb128 (val1->v.val_int); | |
| 3445 | fputc ('\n', asm_out_file); | |
| 3446 | break; | |
| 3447 | case DW_OP_regx: | |
| 3448 | output_uleb128 (val1->v.val_unsigned); | |
| 3449 | fputc ('\n', asm_out_file); | |
| 3450 | break; | |
| 3451 | case DW_OP_fbreg: | |
| 3452 | output_sleb128 (val1->v.val_unsigned); | |
| 3453 | fputc ('\n', asm_out_file); | |
| 3454 | break; | |
| 3455 | case DW_OP_bregx: | |
| 3456 | output_uleb128 (val1->v.val_unsigned); | |
| 3457 | fputc ('\n', asm_out_file); | |
| 3458 | output_sleb128 (val2->v.val_unsigned); | |
| 3459 | fputc ('\n', asm_out_file); | |
| 3460 | break; | |
| 3461 | case DW_OP_piece: | |
| 3462 | output_uleb128 (val1->v.val_unsigned); | |
| 3463 | fputc ('\n', asm_out_file); | |
| 3464 | break; | |
| 3465 | case DW_OP_deref_size: | |
| 3466 | case DW_OP_xderef_size: | |
| 3467 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag); | |
| 3468 | fputc ('\n', asm_out_file); | |
| 3469 | break; | |
| 3470 | default: | |
| 3471 | break; | |
| 3472 | } | |
| 3473 | } | |
| 3474 | ||
| 3475 | /* Compute the offset of a sibling. */ | |
| 3476 | static unsigned long | |
| 3477 | sibling_offset (die) | |
| 3478 | dw_die_ref die; | |
| 3479 | { | |
| 3480 | unsigned long offset; | |
| 3481 | if (die->die_child_last == NULL) | |
| 3482 | { | |
| 3483 | offset = die->die_offset + size_of_die (die); | |
| 3484 | } | |
| 3485 | else | |
| 3486 | { | |
| 3487 | offset = sibling_offset (die->die_child_last) + 1; | |
| 3488 | } | |
| 3489 | return offset; | |
| 3490 | } | |
| 3491 | ||
| 3492 | /* Output the DIE and its attributes. Called recursively to generate | |
| 3493 | the definitions of each child DIE. */ | |
| 3494 | static void | |
| 3495 | output_die (die) | |
| 3496 | register dw_die_ref die; | |
| 3497 | { | |
| 3498 | register dw_attr_ref a; | |
| 3499 | register dw_die_ref c; | |
| 3500 | register unsigned long ref_offset; | |
| 3501 | register unsigned long size; | |
| 3502 | register dw_loc_descr_ref loc; | |
| 3503 | output_uleb128 (die->die_abbrev); | |
| 3504 | if (flag_verbose_asm) | |
| 3505 | { | |
| 3506 | fprintf (asm_out_file, "\t%s DIE (0x%x) %s", | |
| 3507 | ASM_COMMENT_START, | |
| 3508 | die->die_offset, | |
| 3509 | dwarf_tag_name (die->die_tag)); | |
| 3510 | } | |
| 3511 | fputc ('\n', asm_out_file); | |
| 3512 | for (a = die->die_attr; a != NULL; a = a->dw_attr_next) | |
| 3513 | { | |
| 3514 | switch (a->dw_attr_val.val_class) | |
| 3515 | { | |
| 3516 | case dw_val_class_addr: | |
| 3517 | ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, | |
| 3518 | a->dw_attr_val.v.val_addr); | |
| 3519 | break; | |
| 3520 | case dw_val_class_loc: | |
| f37230f0 JM |
3521 | size = size_of_locs (a->dw_attr_val.v.val_loc); |
| 3522 | /* Output the block length for this list of location operations. */ | |
| 3523 | switch (constant_size (size)) | |
| a3f97cbb | 3524 | { |
| f37230f0 JM |
3525 | case 1: |
| 3526 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size); | |
| 3527 | break; | |
| 3528 | case 2: | |
| 3529 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size); | |
| 3530 | break; | |
| 3531 | default: | |
| 3532 | abort (); | |
| a3f97cbb | 3533 | } |
| a3f97cbb JW |
3534 | if (flag_verbose_asm) |
| 3535 | { | |
| 3536 | fprintf (asm_out_file, "\t%s %s", | |
| 3537 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
| 3538 | } | |
| 3539 | fputc ('\n', asm_out_file); | |
| 3540 | for (loc = a->dw_attr_val.v.val_loc; loc != NULL; | |
| 3541 | loc = loc->dw_loc_next) | |
| 3542 | { | |
| 3543 | /* Output the opcode. */ | |
| 3544 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc); | |
| 3545 | if (flag_verbose_asm) | |
| 3546 | { | |
| 3547 | fprintf (asm_out_file, "\t%s %s", | |
| 3548 | ASM_COMMENT_START, | |
| 3549 | dwarf_stack_op_name (loc->dw_loc_opc)); | |
| 3550 | } | |
| 3551 | fputc ('\n', asm_out_file); | |
| 3552 | /* Output the operand(s) (if any). */ | |
| 3553 | output_loc_operands (loc); | |
| 3554 | } | |
| 3555 | break; | |
| 3556 | case dw_val_class_const: | |
| 3557 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, a->dw_attr_val.v.val_int); | |
| 3558 | break; | |
| 3559 | case dw_val_class_unsigned_const: | |
| 7e23cb16 JM |
3560 | switch (constant_size (a->dw_attr_val.v.val_unsigned)) |
| 3561 | { | |
| 3562 | case 1: | |
| 3563 | ASM_OUTPUT_DWARF_DATA1 | |
| 3564 | (asm_out_file, a->dw_attr_val.v.val_unsigned); | |
| 3565 | break; | |
| 3566 | case 2: | |
| 3567 | ASM_OUTPUT_DWARF_DATA2 | |
| 3568 | (asm_out_file, a->dw_attr_val.v.val_unsigned); | |
| 3569 | break; | |
| 3570 | case 4: | |
| 3571 | ASM_OUTPUT_DWARF_DATA4 | |
| 3572 | (asm_out_file, a->dw_attr_val.v.val_unsigned); | |
| 3573 | break; | |
| 3574 | default: | |
| 3575 | abort (); | |
| 3576 | } | |
| a3f97cbb JW |
3577 | break; |
| 3578 | case dw_val_class_double_const: | |
| 3579 | ASM_OUTPUT_DWARF_DATA8 (asm_out_file, | |
| 3580 | a->dw_attr_val.v.val_dbl_const.dw_dbl_hi, | |
| 3581 | a->dw_attr_val.v.val_dbl_const.dw_dbl_low); | |
| 3582 | break; | |
| 3583 | case dw_val_class_flag: | |
| 3584 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, a->dw_attr_val.v.val_flag); | |
| 3585 | break; | |
| 3586 | case dw_val_class_die_ref: | |
| 3587 | if (a->dw_attr_val.v.val_die_ref != NULL) | |
| 3588 | { | |
| 3589 | ref_offset = a->dw_attr_val.v.val_die_ref->die_offset; | |
| 3590 | } | |
| 3591 | else if (a->dw_attr == DW_AT_sibling) | |
| 3592 | { | |
| 3593 | ref_offset = sibling_offset(die); | |
| 3594 | } | |
| 3595 | else | |
| 3596 | { | |
| 3597 | abort (); | |
| 3598 | } | |
| 7e23cb16 | 3599 | ASM_OUTPUT_DWARF_DATA (asm_out_file, ref_offset); |
| a3f97cbb JW |
3600 | break; |
| 3601 | case dw_val_class_fde_ref: | |
| 3602 | ref_offset = fde_table[a->dw_attr_val.v.val_fde_index].dw_fde_offset; | |
| 7e23cb16 | 3603 | fprintf (asm_out_file, "\t%s\t%s+0x%x", UNALIGNED_OFFSET_ASM_OP, |
| a3f97cbb JW |
3604 | stripattributes (FRAME_SECTION), ref_offset); |
| 3605 | break; | |
| 3606 | case dw_val_class_lbl_id: | |
| 3607 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, a->dw_attr_val.v.val_lbl_id); | |
| 3608 | break; | |
| 3609 | case dw_val_class_section_offset: | |
| 7e23cb16 JM |
3610 | ASM_OUTPUT_DWARF_OFFSET |
| 3611 | (asm_out_file, stripattributes (a->dw_attr_val.v.val_section)); | |
| a3f97cbb JW |
3612 | break; |
| 3613 | case dw_val_class_str: | |
| 3614 | ASM_OUTPUT_DWARF_STRING (asm_out_file, a->dw_attr_val.v.val_str); | |
| 3615 | break; | |
| 3616 | default: | |
| 3617 | abort (); | |
| 3618 | } | |
| 3619 | if (a->dw_attr_val.val_class != dw_val_class_loc) | |
| 3620 | { | |
| 3621 | if (flag_verbose_asm) | |
| 3622 | { | |
| 3623 | fprintf (asm_out_file, "\t%s %s", | |
| 3624 | ASM_COMMENT_START, dwarf_attr_name (a->dw_attr)); | |
| 3625 | } | |
| 3626 | fputc ('\n', asm_out_file); | |
| 3627 | } | |
| 3628 | } | |
| 3629 | for (c = die->die_child; c != NULL; c = c->die_sib) | |
| 3630 | { | |
| 3631 | output_die (c); | |
| 3632 | } | |
| 3633 | if (die->die_child != NULL) | |
| 3634 | { | |
| 3635 | /* Add null byte to terminate sibling list. */ | |
| 3636 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 3637 | fputc ('\n', asm_out_file); | |
| 3638 | } | |
| 3639 | } | |
| 3640 | ||
| 3641 | /* Output the compilation unit that appears at the beginning of the | |
| 3642 | .debug_info section, and precedes the DIE descriptions. */ | |
| 3643 | static void | |
| 3644 | output_compilation_unit_header () | |
| 3645 | { | |
| 7e23cb16 | 3646 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE); |
| a3f97cbb JW |
3647 | if (flag_verbose_asm) |
| 3648 | { | |
| 3649 | fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.", | |
| 3650 | ASM_COMMENT_START); | |
| 3651 | } | |
| 3652 | fputc ('\n', asm_out_file); | |
| 7e23cb16 | 3653 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); |
| a3f97cbb JW |
3654 | if (flag_verbose_asm) |
| 3655 | { | |
| 3656 | fprintf (asm_out_file, "\t%s DWARF version number", | |
| 3657 | ASM_COMMENT_START); | |
| 3658 | } | |
| 3659 | fputc ('\n', asm_out_file); | |
| 7e23cb16 | 3660 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (ABBREV_SECTION)); |
| a3f97cbb JW |
3661 | if (flag_verbose_asm) |
| 3662 | { | |
| 3663 | fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section", | |
| 3664 | ASM_COMMENT_START); | |
| 3665 | } | |
| 3666 | fputc ('\n', asm_out_file); | |
| 7e23cb16 | 3667 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); |
| a3f97cbb JW |
3668 | if (flag_verbose_asm) |
| 3669 | { | |
| 3670 | fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", | |
| 3671 | ASM_COMMENT_START); | |
| 3672 | } | |
| 3673 | fputc ('\n', asm_out_file); | |
| 3674 | } | |
| 3675 | ||
| 3676 | /* Return the size of a Call Frame Instruction. */ | |
| 3677 | static unsigned long | |
| 3678 | size_of_cfi (cfi) | |
| 3679 | dw_cfi_ref cfi; | |
| 3680 | { | |
| 3681 | register unsigned long size; | |
| 3682 | /* count the 1-byte opcode */ | |
| 3683 | size = 1; | |
| 3684 | switch (cfi->dw_cfi_opc) | |
| 3685 | { | |
| 3686 | case DW_CFA_offset: | |
| 3687 | size += size_of_uleb128(cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
| 3688 | break; | |
| 3689 | case DW_CFA_set_loc: | |
| 3690 | size += PTR_SIZE; | |
| 3691 | break; | |
| 3692 | case DW_CFA_advance_loc1: | |
| 3693 | size += 1; | |
| 3694 | break; | |
| 3695 | case DW_CFA_advance_loc2: | |
| 3696 | size += 2; | |
| 3697 | break; | |
| 3698 | case DW_CFA_advance_loc4: | |
| 3699 | size += 4; | |
| 3700 | break; | |
| 3701 | #ifdef MIPS_DEBUGGING_INFO | |
| 3702 | case DW_CFA_MIPS_advance_loc8: | |
| 3703 | size += 8; | |
| 3704 | break; | |
| 3705 | #endif | |
| 3706 | case DW_CFA_offset_extended: | |
| 3707 | case DW_CFA_def_cfa: | |
| 3708 | size += size_of_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
| 3709 | size += size_of_uleb128(cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
| 3710 | break; | |
| 3711 | case DW_CFA_restore_extended: | |
| 3712 | case DW_CFA_undefined: | |
| 3713 | size += size_of_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
| 3714 | break; | |
| 3715 | case DW_CFA_same_value: | |
| 3716 | case DW_CFA_def_cfa_register: | |
| 3717 | size += size_of_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
| 3718 | break; | |
| 3719 | case DW_CFA_register: | |
| 3720 | size += size_of_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
| 3721 | size += size_of_uleb128(cfi->dw_cfi_oprnd2.dw_cfi_reg_num); | |
| 3722 | break; | |
| 3723 | case DW_CFA_def_cfa_offset: | |
| 3724 | size += size_of_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
| 3725 | break; | |
| 3726 | default: | |
| 3727 | break; | |
| 3728 | } | |
| 3729 | return size; | |
| 3730 | } | |
| 3731 | ||
| 3732 | /* Return the size of an FDE sans the length word. */ | |
| 3733 | inline unsigned long | |
| 3734 | size_of_fde (fde, npad) | |
| 3735 | dw_fde_ref fde; | |
| 3736 | unsigned long *npad; | |
| 3737 | { | |
| 3738 | register dw_cfi_ref cfi; | |
| 3739 | register unsigned long aligned_size; | |
| 3740 | register unsigned long size; | |
| 3741 | size = DWARF_FDE_HEADER_SIZE; | |
| 3742 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
| 3743 | { | |
| 3744 | size += size_of_cfi(cfi); | |
| 3745 | } | |
| 7e23cb16 JM |
3746 | /* Round the size up to a word boundary. */ |
| 3747 | aligned_size = DWARF_ROUND (size, PTR_SIZE); | |
| a3f97cbb JW |
3748 | *npad = aligned_size - size; |
| 3749 | return aligned_size; | |
| 3750 | } | |
| 3751 | ||
| 3752 | /* Calculate the size of the FDE table, and establish the offset | |
| 3753 | of each FDE in the .debug_frame section. */ | |
| 3754 | static void | |
| 3755 | calc_fde_sizes () | |
| 3756 | { | |
| 3757 | register unsigned long i; | |
| 3758 | register dw_fde_ref fde; | |
| 3759 | register unsigned long fde_size; | |
| 3760 | unsigned long fde_pad; | |
| 3761 | for (i = 0; i < fde_table_in_use; ++i) | |
| 3762 | { | |
| 3763 | fde = &fde_table[i]; | |
| 3764 | fde->dw_fde_offset = next_fde_offset; | |
| 3765 | fde_size = size_of_fde (fde, &fde_pad); | |
| 3766 | next_fde_offset += fde_size; | |
| 3767 | } | |
| 3768 | } | |
| 3769 | ||
| 3770 | /* Output a Call Frame Information opcode and its operand(s). */ | |
| 3771 | static void | |
| 3772 | output_cfi (cfi, fde) | |
| 3773 | register dw_cfi_ref cfi; | |
| 3774 | register dw_fde_ref fde; | |
| 3775 | { | |
| 3776 | if (cfi->dw_cfi_opc == DW_CFA_advance_loc) | |
| 3777 | { | |
| 3778 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
| 3779 | cfi->dw_cfi_opc | |
| 3780 | | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)); | |
| 3781 | if (flag_verbose_asm) | |
| 3782 | { | |
| 3783 | fprintf (asm_out_file, "\t%s DW_CFA_advance_loc", ASM_COMMENT_START); | |
| 3784 | } | |
| 3785 | fputc ('\n', asm_out_file); | |
| 3786 | } | |
| 3787 | else if (cfi->dw_cfi_opc == DW_CFA_offset) | |
| 3788 | { | |
| 3789 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
| 3790 | cfi->dw_cfi_opc | |
| 3791 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
| 3792 | if (flag_verbose_asm) | |
| 3793 | { | |
| 3794 | fprintf (asm_out_file, "\t%s DW_CFA_offset", ASM_COMMENT_START); | |
| 3795 | } | |
| 3796 | fputc ('\n', asm_out_file); | |
| 3797 | output_uleb128(cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
| 3798 | fputc ('\n', asm_out_file); | |
| 3799 | } | |
| 3800 | else if (cfi->dw_cfi_opc == DW_CFA_restore) | |
| 3801 | { | |
| 3802 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
| 3803 | cfi->dw_cfi_opc | |
| 3804 | | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)); | |
| 3805 | if (flag_verbose_asm) | |
| 3806 | { | |
| 3807 | fprintf (asm_out_file, "\t%s DW_CFA_restore", ASM_COMMENT_START); | |
| 3808 | } | |
| 3809 | fputc ('\n', asm_out_file); | |
| 3810 | } | |
| 3811 | else | |
| 3812 | { | |
| 3813 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc); | |
| 3814 | if (flag_verbose_asm) | |
| 3815 | { | |
| 3816 | fprintf (asm_out_file, "\t%s %s", | |
| 3817 | ASM_COMMENT_START, | |
| 3818 | dwarf_cfi_name (cfi->dw_cfi_opc)); | |
| 3819 | } | |
| 3820 | fputc ('\n', asm_out_file); | |
| 3821 | switch (cfi->dw_cfi_opc) | |
| 3822 | { | |
| 3823 | case DW_CFA_set_loc: | |
| 3824 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, | |
| 3825 | cfi->dw_cfi_oprnd1.dw_cfi_addr); | |
| 3826 | fputc ('\n', asm_out_file); | |
| 3827 | break; | |
| 3828 | case DW_CFA_advance_loc1: | |
| 3829 | /* TODO: not currently implemented. */ | |
| 3830 | abort (); | |
| 3831 | break; | |
| 3832 | case DW_CFA_advance_loc2: | |
| 3833 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, | |
| 3834 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
| 3835 | fde->dw_fde_begin); | |
| 3836 | fputc ('\n', asm_out_file); | |
| 3837 | break; | |
| 3838 | case DW_CFA_advance_loc4: | |
| 3839 | ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, | |
| 3840 | cfi->dw_cfi_oprnd1.dw_cfi_addr, | |
| 3841 | fde->dw_fde_begin); | |
| 3842 | fputc ('\n', asm_out_file); | |
| 3843 | break; | |
| 3844 | #ifdef MIPS_DEBUGGING_INFO | |
| 3845 | case DW_CFA_MIPS_advance_loc8: | |
| 3846 | /* TODO: not currently implemented. */ | |
| 3847 | abort (); | |
| 3848 | break; | |
| 3849 | #endif | |
| 3850 | case DW_CFA_offset_extended: | |
| 3851 | case DW_CFA_def_cfa: | |
| 3852 | output_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
| 3853 | fputc ('\n', asm_out_file); | |
| 3854 | output_uleb128(cfi->dw_cfi_oprnd2.dw_cfi_offset); | |
| 3855 | fputc ('\n', asm_out_file); | |
| 3856 | break; | |
| 3857 | case DW_CFA_restore_extended: | |
| 3858 | case DW_CFA_undefined: | |
| 3859 | output_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
| 3860 | fputc ('\n', asm_out_file); | |
| 3861 | break; | |
| 3862 | case DW_CFA_same_value: | |
| 3863 | case DW_CFA_def_cfa_register: | |
| 3864 | output_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
| 3865 | fputc ('\n', asm_out_file); | |
| 3866 | break; | |
| 3867 | case DW_CFA_register: | |
| 3868 | output_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_reg_num); | |
| 3869 | fputc ('\n', asm_out_file); | |
| 3870 | output_uleb128(cfi->dw_cfi_oprnd2.dw_cfi_reg_num); | |
| 3871 | fputc ('\n', asm_out_file); | |
| 3872 | break; | |
| 3873 | case DW_CFA_def_cfa_offset: | |
| 3874 | output_uleb128(cfi->dw_cfi_oprnd1.dw_cfi_offset); | |
| 3875 | fputc ('\n', asm_out_file); | |
| 3876 | break; | |
| 3877 | default: | |
| 3878 | break; | |
| 3879 | } | |
| 3880 | } | |
| 3881 | } | |
| 3882 | ||
| 3883 | /* Output the call frame information used to used to record information | |
| 3884 | that relates to calculating the frame pointer, and records the | |
| 3885 | location of saved registers. */ | |
| 3886 | static void | |
| 3887 | output_call_frame_info () | |
| 3888 | { | |
| 3889 | register unsigned long i, j; | |
| 3890 | register dw_fde_ref fde; | |
| 3891 | register unsigned long fde_size; | |
| 3892 | dw_cfi_node cfi_node; | |
| 3893 | register dw_cfi_ref cfi; | |
| 3894 | unsigned long fde_pad; | |
| 3895 | ||
| 3896 | /* Output the CIE. */ | |
| 7e23cb16 | 3897 | ASM_OUTPUT_DWARF_DATA (asm_out_file, DWARF_CIE_SIZE - DWARF_OFFSET_SIZE); |
| a3f97cbb JW |
3898 | if (flag_verbose_asm) |
| 3899 | { | |
| 3900 | fprintf (asm_out_file, "\t%s Length of Common Information Entry", | |
| 3901 | ASM_COMMENT_START); | |
| 3902 | } | |
| 3903 | fputc ('\n', asm_out_file); | |
| 3904 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
| 3905 | if (flag_verbose_asm) | |
| 3906 | { | |
| 3907 | fprintf (asm_out_file, "\t%s CIE Identifier Tag", | |
| 3908 | ASM_COMMENT_START); | |
| 3909 | } | |
| 3910 | fputc ('\n', asm_out_file); | |
| 7e23cb16 JM |
3911 | if (DWARF_OFFSET_SIZE == 8) |
| 3912 | { | |
| 3913 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID); | |
| 3914 | fputc ('\n', asm_out_file); | |
| 3915 | } | |
| a3f97cbb JW |
3916 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION); |
| 3917 | if (flag_verbose_asm) | |
| 3918 | { | |
| 3919 | fprintf (asm_out_file, "\t%s CIE Version", | |
| 3920 | ASM_COMMENT_START); | |
| 3921 | } | |
| 3922 | fputc ('\n', asm_out_file); | |
| 3923 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 3924 | if (flag_verbose_asm) | |
| 3925 | { | |
| 3926 | fprintf (asm_out_file, "\t%s CIE Augmentation (none)", | |
| 3927 | ASM_COMMENT_START); | |
| 3928 | } | |
| 3929 | fputc ('\n', asm_out_file); | |
| 3930 | output_uleb128 (1); | |
| 3931 | if (flag_verbose_asm) | |
| 3932 | { | |
| 3933 | fprintf (asm_out_file, "\t%s CIE Code Alignment Factor", | |
| 3934 | ASM_COMMENT_START); | |
| 3935 | } | |
| 3936 | fputc ('\n', asm_out_file); | |
| 3937 | output_sleb128 (DWARF_CIE_DATA_ALIGNMENT); | |
| 3938 | if (flag_verbose_asm) | |
| 3939 | { | |
| 3940 | fprintf (asm_out_file, "\t%s CIE Data Alignment Factor", | |
| 3941 | ASM_COMMENT_START); | |
| 3942 | } | |
| 3943 | fputc ('\n', asm_out_file); | |
| c8cc5c4a | 3944 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN); |
| a3f97cbb JW |
3945 | if (flag_verbose_asm) |
| 3946 | { | |
| 3947 | fprintf (asm_out_file, "\t%s CIE RA Column", | |
| 3948 | ASM_COMMENT_START); | |
| 3949 | } | |
| 3950 | fputc ('\n', asm_out_file); | |
| 3951 | ||
| 3952 | /* Output the CFA instructions common to all FDE's. */ | |
| 3953 | ||
| 3954 | #ifdef MIPS_DEBUGGING_INFO | |
| 3955 | ||
| a3f97cbb JW |
3956 | bzero (&cfi_node, sizeof (dw_cfi_node)); |
| 3957 | cfi = &cfi_node; | |
| c8cc5c4a JM |
3958 | |
| 3959 | /* On entry, the Call Frame Address is in the stack pointer register. */ | |
| 3960 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
| 3961 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num | |
| 3962 | = DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM); | |
| 3963 | cfi->dw_cfi_oprnd2.dw_cfi_offset = 0; | |
| 3964 | output_cfi (cfi); | |
| 3965 | ||
| 3966 | /* Set the RA on entry to be the contents of r31. */ | |
| a3f97cbb | 3967 | cfi->dw_cfi_opc = DW_CFA_register; |
| c8cc5c4a JM |
3968 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = DWARF_FRAME_RETURN_COLUMN; |
| 3969 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num | |
| 3970 | = DWARF_FRAME_REGNUM (GP_REG_FIRST + 31); | |
| a3f97cbb JW |
3971 | output_cfi (cfi); |
| 3972 | ||
| 3973 | #endif | |
| 3974 | ||
| 3975 | /* Pad the CIE out to an address sized boundary. */ | |
| 3976 | for (i = DWARF_CIE_HEADER_SIZE; i < DWARF_CIE_SIZE; ++i) | |
| 3977 | { | |
| 3978 | /* Pad out to a pointer size boundary */ | |
| 3979 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CFA_nop); | |
| 3980 | if (flag_verbose_asm) | |
| 3981 | { | |
| 3982 | fprintf (asm_out_file, "\t%s CIE DW_CFA_nop (pad)", | |
| 3983 | ASM_COMMENT_START); | |
| 3984 | } | |
| 3985 | fputc ('\n', asm_out_file); | |
| 3986 | } | |
| 3987 | ||
| 3988 | /* Loop through all of the FDE's. */ | |
| 3989 | for (i = 0; i < fde_table_in_use; ++i) | |
| 3990 | { | |
| 3991 | fde = &fde_table[i]; | |
| 3992 | fde_size = size_of_fde (fde, &fde_pad); | |
| 7e23cb16 | 3993 | ASM_OUTPUT_DWARF_DATA (asm_out_file, fde_size - DWARF_OFFSET_SIZE); |
| a3f97cbb JW |
3994 | if (flag_verbose_asm) |
| 3995 | { | |
| 3996 | fprintf (asm_out_file, "\t%s FDE Length", | |
| 3997 | ASM_COMMENT_START); | |
| 3998 | } | |
| 3999 | fputc ('\n', asm_out_file); | |
| 7e23cb16 | 4000 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION)); |
| a3f97cbb JW |
4001 | if (flag_verbose_asm) |
| 4002 | { | |
| 4003 | fprintf (asm_out_file, "\t%s FDE CIE offset", | |
| 4004 | ASM_COMMENT_START); | |
| 4005 | } | |
| 4006 | fputc ('\n', asm_out_file); | |
| 4007 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin); | |
| 4008 | if (flag_verbose_asm) | |
| 4009 | { | |
| 4010 | fprintf (asm_out_file, "\t%s FDE initial location", | |
| 4011 | ASM_COMMENT_START); | |
| 4012 | } | |
| 4013 | fputc ('\n', asm_out_file); | |
| 7e23cb16 JM |
4014 | ASM_OUTPUT_DWARF_ADDR_DELTA |
| 4015 | (asm_out_file, fde->dw_fde_end, fde->dw_fde_begin); | |
| a3f97cbb JW |
4016 | if (flag_verbose_asm) |
| 4017 | { | |
| 4018 | fprintf (asm_out_file, "\t%s FDE address range", | |
| 4019 | ASM_COMMENT_START); | |
| 4020 | } | |
| 4021 | fputc ('\n', asm_out_file); | |
| 4022 | ||
| 4023 | /* Loop through the Call Frame Instructions associated with | |
| 4024 | this FDE. */ | |
| 4025 | for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next) | |
| 4026 | { | |
| 4027 | output_cfi (cfi, fde); | |
| 4028 | } | |
| 4029 | ||
| 4030 | /* Pad to a double word boundary. */ | |
| 4031 | for (j = 0; j < fde_pad; ++j) | |
| 4032 | { | |
| 4033 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CFA_nop); | |
| 4034 | if (flag_verbose_asm) | |
| 4035 | { | |
| 4036 | fprintf (asm_out_file, "\t%s CIE DW_CFA_nop (pad)", | |
| 4037 | ASM_COMMENT_START); | |
| 4038 | } | |
| 4039 | fputc ('\n', asm_out_file); | |
| 4040 | } | |
| 4041 | } | |
| 4042 | } | |
| 4043 | ||
| d291dd49 JM |
4044 | /* Add a new entry to .debug_pubnames if appropriate. */ |
| 4045 | static void | |
| 4046 | add_pubname (decl, die) | |
| 4047 | tree decl; | |
| 4048 | dw_die_ref die; | |
| 4049 | { | |
| 4050 | pubname_ref p; | |
| 4051 | ||
| 4052 | if (! TREE_PUBLIC (decl)) | |
| 4053 | return; | |
| 4054 | ||
| 4055 | if (pubname_table_in_use == pubname_table_allocated) | |
| 4056 | { | |
| 4057 | pubname_table_allocated += PUBNAME_TABLE_INCREMENT; | |
| 4058 | pubname_table = (pubname_ref) xrealloc | |
| 4059 | (pubname_table, pubname_table_allocated * sizeof (pubname_entry)); | |
| 4060 | } | |
| 4061 | p = &pubname_table[pubname_table_in_use++]; | |
| 4062 | p->die = die; | |
| 4063 | p->name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)); | |
| 4064 | } | |
| 4065 | ||
| a3f97cbb JW |
4066 | /* Output the public names table used to speed up access to externally |
| 4067 | visible names. For now, only generate entries for externally | |
| 4068 | visible procedures. */ | |
| 4069 | static void | |
| 4070 | output_pubnames () | |
| 4071 | { | |
| d291dd49 JM |
4072 | register unsigned i; |
| 4073 | { | |
| 4074 | register unsigned long pubnames_length = size_of_pubnames (); | |
| 7e23cb16 | 4075 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length); |
| d291dd49 | 4076 | } |
| a3f97cbb JW |
4077 | if (flag_verbose_asm) |
| 4078 | { | |
| 4079 | fprintf (asm_out_file, "\t%s Length of Public Names Info.", | |
| 4080 | ASM_COMMENT_START); | |
| 4081 | } | |
| 4082 | fputc ('\n', asm_out_file); | |
| 4083 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
| 4084 | if (flag_verbose_asm) | |
| 4085 | { | |
| 4086 | fprintf (asm_out_file, "\t%s DWARF Version", | |
| 4087 | ASM_COMMENT_START); | |
| 4088 | } | |
| 4089 | fputc ('\n', asm_out_file); | |
| 7e23cb16 | 4090 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_SECTION)); |
| a3f97cbb JW |
4091 | if (flag_verbose_asm) |
| 4092 | { | |
| 4093 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", | |
| 4094 | ASM_COMMENT_START); | |
| 4095 | } | |
| 4096 | fputc ('\n', asm_out_file); | |
| 7e23cb16 | 4097 | ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset); |
| a3f97cbb JW |
4098 | if (flag_verbose_asm) |
| 4099 | { | |
| 4100 | fprintf (asm_out_file, "\t%s Compilation Unit Length", | |
| 4101 | ASM_COMMENT_START); | |
| 4102 | } | |
| 4103 | fputc ('\n', asm_out_file); | |
| d291dd49 | 4104 | for (i = 0; i < pubname_table_in_use; ++i) |
| a3f97cbb | 4105 | { |
| d291dd49 | 4106 | register pubname_ref pub = &pubname_table[i]; |
| 7e23cb16 | 4107 | ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset); |
| d291dd49 | 4108 | if (flag_verbose_asm) |
| a3f97cbb | 4109 | { |
| d291dd49 JM |
4110 | fprintf (asm_out_file, "\t%s DIE offset", |
| 4111 | ASM_COMMENT_START); | |
| a3f97cbb | 4112 | } |
| d291dd49 JM |
4113 | fputc ('\n', asm_out_file); |
| 4114 | ||
| 4115 | ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name); | |
| 4116 | if (flag_verbose_asm) | |
| 4117 | { | |
| 4118 | fprintf (asm_out_file, "%s external name", | |
| 4119 | ASM_COMMENT_START); | |
| 4120 | } | |
| 4121 | fputc ('\n', asm_out_file); | |
| a3f97cbb | 4122 | } |
| 7e23cb16 | 4123 | ASM_OUTPUT_DWARF_DATA (asm_out_file, 0); |
| a3f97cbb JW |
4124 | fputc ('\n', asm_out_file); |
| 4125 | } | |
| 4126 | ||
| d291dd49 JM |
4127 | /* Add a new entry to .debug_aranges if appropriate. */ |
| 4128 | static void | |
| 4129 | add_arange (decl, die) | |
| 4130 | tree decl; | |
| 4131 | dw_die_ref die; | |
| 4132 | { | |
| 4133 | if (! DECL_SECTION_NAME (decl)) | |
| 4134 | return; | |
| 4135 | ||
| 4136 | if (arange_table_in_use == arange_table_allocated) | |
| 4137 | { | |
| 4138 | arange_table_allocated += ARANGE_TABLE_INCREMENT; | |
| 4139 | arange_table = (arange_ref) xrealloc | |
| 4140 | (arange_table, arange_table_allocated * sizeof (dw_die_ref)); | |
| 4141 | } | |
| 4142 | arange_table[arange_table_in_use++] = die; | |
| 4143 | } | |
| 4144 | ||
| a3f97cbb JW |
4145 | /* Output the information that goes into the .debug_aranges table. |
| 4146 | Namely, define the beginning and ending address range of the | |
| 4147 | text section generated for this compilation unit. */ | |
| 4148 | static void | |
| 4149 | output_aranges () | |
| 4150 | { | |
| d291dd49 JM |
4151 | register unsigned i; |
| 4152 | { | |
| 4153 | register unsigned long aranges_length = size_of_aranges (); | |
| 7e23cb16 | 4154 | ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length); |
| d291dd49 | 4155 | } |
| a3f97cbb JW |
4156 | if (flag_verbose_asm) |
| 4157 | { | |
| 4158 | fprintf (asm_out_file, "\t%s Length of Address Ranges Info.", | |
| 4159 | ASM_COMMENT_START); | |
| 4160 | } | |
| 4161 | fputc ('\n', asm_out_file); | |
| 4162 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
| 4163 | if (flag_verbose_asm) | |
| 4164 | { | |
| 4165 | fprintf (asm_out_file, "\t%s DWARF Version", | |
| 4166 | ASM_COMMENT_START); | |
| 4167 | } | |
| 4168 | fputc ('\n', asm_out_file); | |
| 7e23cb16 | 4169 | ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (DEBUG_SECTION)); |
| a3f97cbb JW |
4170 | if (flag_verbose_asm) |
| 4171 | { | |
| 4172 | fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.", | |
| 4173 | ASM_COMMENT_START); | |
| 4174 | } | |
| 4175 | fputc ('\n', asm_out_file); | |
| 4176 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, PTR_SIZE); | |
| 4177 | if (flag_verbose_asm) | |
| 4178 | { | |
| 4179 | fprintf (asm_out_file, "\t%s Size of Address", | |
| 4180 | ASM_COMMENT_START); | |
| 4181 | } | |
| 4182 | fputc ('\n', asm_out_file); | |
| 4183 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 4184 | if (flag_verbose_asm) | |
| 4185 | { | |
| 4186 | fprintf (asm_out_file, "\t%s Size of Segment Descriptor", | |
| 4187 | ASM_COMMENT_START); | |
| 4188 | } | |
| 4189 | fputc ('\n', asm_out_file); | |
| 4190 | ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 4); | |
| 7e23cb16 JM |
4191 | if (PTR_SIZE == 8) |
| 4192 | fprintf (asm_out_file, ",0,0"); | |
| a3f97cbb JW |
4193 | if (flag_verbose_asm) |
| 4194 | { | |
| 7e23cb16 JM |
4195 | fprintf (asm_out_file, "\t%s Pad to %d byte boundary", |
| 4196 | ASM_COMMENT_START, 2 * PTR_SIZE); | |
| a3f97cbb JW |
4197 | } |
| 4198 | fputc ('\n', asm_out_file); | |
| bdb669cb | 4199 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, TEXT_SECTION); |
| a3f97cbb JW |
4200 | if (flag_verbose_asm) |
| 4201 | { | |
| 4202 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); | |
| 4203 | } | |
| 4204 | fputc ('\n', asm_out_file); | |
| 5c90448c | 4205 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label, TEXT_SECTION); |
| a3f97cbb JW |
4206 | if (flag_verbose_asm) |
| 4207 | { | |
| 4208 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); | |
| 4209 | } | |
| 4210 | fputc ('\n', asm_out_file); | |
| d291dd49 JM |
4211 | for (i = 0; i < arange_table_in_use; ++i) |
| 4212 | { | |
| 4213 | dw_die_ref a = arange_table[i]; | |
| 4214 | if (a->die_tag == DW_TAG_subprogram) | |
| 4215 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (a)); | |
| 4216 | else | |
| 4217 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_string (a, DW_AT_name)); | |
| 4218 | if (flag_verbose_asm) | |
| 4219 | { | |
| 4220 | fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START); | |
| 4221 | } | |
| 4222 | fputc ('\n', asm_out_file); | |
| 4223 | if (a->die_tag == DW_TAG_subprogram) | |
| 7e23cb16 JM |
4224 | ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (a), |
| 4225 | get_AT_low_pc (a)); | |
| d291dd49 | 4226 | else |
| 7e23cb16 JM |
4227 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, |
| 4228 | get_AT_unsigned (a, DW_AT_byte_size)); | |
| d291dd49 JM |
4229 | if (flag_verbose_asm) |
| 4230 | { | |
| 4231 | fprintf (asm_out_file, "%s Length", ASM_COMMENT_START); | |
| 4232 | } | |
| 4233 | fputc ('\n', asm_out_file); | |
| 4234 | } | |
| a3f97cbb | 4235 | /* Output the terminator words. */ |
| 7e23cb16 | 4236 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
| a3f97cbb | 4237 | fputc ('\n', asm_out_file); |
| 7e23cb16 | 4238 | ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0); |
| a3f97cbb JW |
4239 | fputc ('\n', asm_out_file); |
| 4240 | } | |
| 4241 | ||
| 4242 | /* Output the source line number correspondence information. This | |
| 4243 | information goes into the .debug_line section. */ | |
| 4244 | static void | |
| 4245 | output_line_info () | |
| 4246 | { | |
| a3f97cbb JW |
4247 | char line_label[MAX_ARTIFICIAL_LABEL_BYTES]; |
| 4248 | char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 4249 | register unsigned opc; | |
| 4250 | register unsigned n_op_args; | |
| a3f97cbb JW |
4251 | register unsigned long ft_index; |
| 4252 | register unsigned long lt_index; | |
| 4253 | register unsigned long current_line; | |
| 4254 | register long line_offset; | |
| 4255 | register long line_delta; | |
| 4256 | register unsigned long current_file; | |
| e90b62db | 4257 | register unsigned long function; |
| 7e23cb16 | 4258 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_info ()); |
| a3f97cbb JW |
4259 | if (flag_verbose_asm) |
| 4260 | { | |
| 4261 | fprintf (asm_out_file, "\t%s Length of Source Line Info.", | |
| 4262 | ASM_COMMENT_START); | |
| 4263 | } | |
| 4264 | fputc ('\n', asm_out_file); | |
| 4265 | ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION); | |
| 4266 | if (flag_verbose_asm) | |
| 4267 | { | |
| 4268 | fprintf (asm_out_file, "\t%s DWARF Version", | |
| 4269 | ASM_COMMENT_START); | |
| 4270 | } | |
| 4271 | fputc ('\n', asm_out_file); | |
| 7e23cb16 | 4272 | ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ()); |
| a3f97cbb JW |
4273 | if (flag_verbose_asm) |
| 4274 | { | |
| 4275 | fprintf (asm_out_file, "\t%s Prolog Length", | |
| 4276 | ASM_COMMENT_START); | |
| 4277 | } | |
| 4278 | fputc ('\n', asm_out_file); | |
| 4279 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH); | |
| 4280 | if (flag_verbose_asm) | |
| 4281 | { | |
| 4282 | fprintf (asm_out_file, "\t%s Minimum Instruction Length", | |
| 4283 | ASM_COMMENT_START); | |
| 4284 | } | |
| 4285 | fputc ('\n', asm_out_file); | |
| 4286 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START); | |
| 4287 | if (flag_verbose_asm) | |
| 4288 | { | |
| 4289 | fprintf (asm_out_file, "\t%s Default is_stmt_start flag", | |
| 4290 | ASM_COMMENT_START); | |
| 4291 | } | |
| 4292 | fputc ('\n', asm_out_file); | |
| 4293 | fprintf (asm_out_file, "\t%s\t%d", ASM_BYTE_OP, DWARF_LINE_BASE); | |
| 4294 | if (flag_verbose_asm) | |
| 4295 | { | |
| 4296 | fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)", | |
| 4297 | ASM_COMMENT_START); | |
| 4298 | } | |
| 4299 | fputc ('\n', asm_out_file); | |
| 4300 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_RANGE); | |
| 4301 | if (flag_verbose_asm) | |
| 4302 | { | |
| 4303 | fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)", | |
| 4304 | ASM_COMMENT_START); | |
| 4305 | } | |
| 4306 | fputc ('\n', asm_out_file); | |
| 4307 | fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE); | |
| 4308 | if (flag_verbose_asm) | |
| 4309 | { | |
| 4310 | fprintf (asm_out_file, "\t%s Special Opcode Base", | |
| 4311 | ASM_COMMENT_START); | |
| 4312 | } | |
| 4313 | fputc ('\n', asm_out_file); | |
| 4314 | for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc) | |
| 4315 | { | |
| 4316 | switch (opc) | |
| 4317 | { | |
| 4318 | case DW_LNS_advance_pc: | |
| 4319 | case DW_LNS_advance_line: | |
| 4320 | case DW_LNS_set_file: | |
| 4321 | case DW_LNS_set_column: | |
| 4322 | case DW_LNS_fixed_advance_pc: | |
| 4323 | n_op_args = 1; | |
| 4324 | break; | |
| 4325 | default: | |
| 4326 | n_op_args = 0; | |
| 4327 | break; | |
| 4328 | } | |
| 4329 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args); | |
| 4330 | if (flag_verbose_asm) | |
| 4331 | { | |
| 4332 | fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args", | |
| 4333 | ASM_COMMENT_START, opc, n_op_args); | |
| 4334 | } | |
| 4335 | fputc ('\n', asm_out_file); | |
| 4336 | } | |
| 4337 | if (flag_verbose_asm) | |
| 4338 | { | |
| 4339 | fprintf (asm_out_file, "%s Include Directory Table\n", | |
| 4340 | ASM_COMMENT_START); | |
| 4341 | } | |
| 4342 | /* Include directory table is empty, at present */ | |
| 4343 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 4344 | fputc ('\n', asm_out_file); | |
| 4345 | if (flag_verbose_asm) | |
| 4346 | { | |
| 4347 | fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START); | |
| 4348 | } | |
| 4349 | for (ft_index = 1; ft_index < file_table_in_use; ++ft_index) | |
| 4350 | { | |
| 4351 | ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]); | |
| 4352 | if (flag_verbose_asm) | |
| 4353 | { | |
| 4354 | fprintf (asm_out_file, "%s File Entry: 0x%x", | |
| 4355 | ASM_COMMENT_START, ft_index); | |
| 4356 | } | |
| 4357 | fputc ('\n', asm_out_file); | |
| 4358 | /* Include directory index */ | |
| 4359 | output_uleb128 (0); | |
| 4360 | fputc ('\n', asm_out_file); | |
| 4361 | /* Modification time */ | |
| 4362 | output_uleb128 (0); | |
| 4363 | fputc ('\n', asm_out_file); | |
| 4364 | /* File length in bytes */ | |
| 4365 | output_uleb128 (0); | |
| 4366 | fputc ('\n', asm_out_file); | |
| 4367 | } | |
| 4368 | /* Terminate the file name table */ | |
| 4369 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 4370 | fputc ('\n', asm_out_file); | |
| 4371 | ||
| 4372 | /* Set the address register to the first location in the text section */ | |
| 4373 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 4374 | if (flag_verbose_asm) | |
| 4375 | { | |
| 4376 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START); | |
| 4377 | } | |
| 4378 | fputc ('\n', asm_out_file); | |
| 4379 | output_uleb128 (1 + PTR_SIZE); | |
| 4380 | fputc ('\n', asm_out_file); | |
| 4381 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
| 4382 | fputc ('\n', asm_out_file); | |
| bdb669cb | 4383 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, TEXT_SECTION); |
| a3f97cbb JW |
4384 | fputc ('\n', asm_out_file); |
| 4385 | ||
| 4386 | /* Generate the line number to PC correspondence table, encoded as | |
| 4387 | a series of state machine operations. */ | |
| 4388 | current_file = 1; | |
| 4389 | current_line = 1; | |
| bdb669cb | 4390 | strcpy (prev_line_label, TEXT_SECTION); |
| a3f97cbb JW |
4391 | for (lt_index = 1; lt_index < line_info_table_in_use; ++lt_index) |
| 4392 | { | |
| e90b62db | 4393 | register dw_line_info_ref line_info; |
| a3f97cbb JW |
4394 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); |
| 4395 | if (flag_verbose_asm) | |
| 4396 | { | |
| 4397 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", | |
| 4398 | ASM_COMMENT_START); | |
| 4399 | } | |
| 4400 | fputc ('\n', asm_out_file); | |
| 5c90448c | 4401 | ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index); |
| a3f97cbb JW |
4402 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); |
| 4403 | fputc ('\n', asm_out_file); | |
| 4404 | line_info = &line_info_table[lt_index]; | |
| 4405 | if (line_info->dw_file_num != current_file) | |
| 4406 | { | |
| 4407 | current_file = line_info->dw_file_num; | |
| 4408 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
| 4409 | if (flag_verbose_asm) | |
| 4410 | { | |
| 4411 | fprintf (asm_out_file, | |
| 4412 | "\t%s DW_LNS_set_file", ASM_COMMENT_START); | |
| 4413 | } | |
| 4414 | fputc ('\n', asm_out_file); | |
| 4415 | output_uleb128 (current_file); | |
| 4416 | if (flag_verbose_asm) | |
| 4417 | { | |
| 4418 | fprintf (asm_out_file, "\t%s \"%s\"", | |
| 4419 | ASM_COMMENT_START, file_table[current_file]); | |
| 4420 | } | |
| 4421 | fputc ('\n', asm_out_file); | |
| 4422 | } | |
| 4423 | if (line_info->dw_line_num != current_line) | |
| 4424 | { | |
| 4425 | line_offset = line_info->dw_line_num - current_line; | |
| 4426 | line_delta = line_offset - DWARF_LINE_BASE; | |
| 4427 | current_line = line_info->dw_line_num; | |
| 4428 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
| 4429 | { | |
| 4430 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
| 4431 | DWARF_LINE_OPCODE_BASE + line_delta); | |
| 4432 | if (flag_verbose_asm) | |
| 4433 | { | |
| 4434 | fprintf (asm_out_file, | |
| 4435 | "\t%s line %d", ASM_COMMENT_START, current_line); | |
| 4436 | } | |
| 4437 | fputc ('\n', asm_out_file); | |
| 4438 | } | |
| 4439 | else | |
| 4440 | { | |
| 4441 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
| 4442 | if (flag_verbose_asm) | |
| 4443 | { | |
| 4444 | fprintf (asm_out_file, | |
| 4445 | "\t%s advance to line %d", | |
| 4446 | ASM_COMMENT_START, current_line); | |
| 4447 | } | |
| 4448 | fputc ('\n', asm_out_file); | |
| 4449 | output_sleb128 (line_offset); | |
| 4450 | fputc ('\n', asm_out_file); | |
| 4451 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
| 4452 | fputc ('\n', asm_out_file); | |
| 4453 | } | |
| 4454 | } | |
| 4455 | strcpy (prev_line_label, line_label); | |
| 4456 | } | |
| 4457 | ||
| bdb669cb | 4458 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); |
| a3f97cbb JW |
4459 | if (flag_verbose_asm) |
| 4460 | { | |
| bdb669cb JM |
4461 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", |
| 4462 | ASM_COMMENT_START); | |
| a3f97cbb JW |
4463 | } |
| 4464 | fputc ('\n', asm_out_file); | |
| 5c90448c | 4465 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label); |
| a3f97cbb | 4466 | fputc ('\n', asm_out_file); |
| bdb669cb | 4467 | |
| a3f97cbb JW |
4468 | /* Output the marker for the end of the line number info. */ |
| 4469 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 4470 | if (flag_verbose_asm) | |
| 4471 | { | |
| 4472 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START); | |
| 4473 | } | |
| 4474 | fputc ('\n', asm_out_file); | |
| 4475 | output_uleb128 (1); | |
| 4476 | fputc ('\n', asm_out_file); | |
| 4477 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
| 4478 | fputc ('\n', asm_out_file); | |
| e90b62db JM |
4479 | |
| 4480 | function = 0; | |
| 4481 | current_file = 1; | |
| 4482 | current_line = 1; | |
| 4483 | for (lt_index = 0; lt_index < separate_line_info_table_in_use; ) | |
| 4484 | { | |
| 4485 | register dw_separate_line_info_ref line_info | |
| 4486 | = &separate_line_info_table[lt_index]; | |
| 5c90448c JM |
4487 | ASM_GENERATE_INTERNAL_LABEL (line_label, SEPARATE_LINE_CODE_LABEL, |
| 4488 | lt_index); | |
| e90b62db JM |
4489 | if (function != line_info->function) |
| 4490 | { | |
| 4491 | function = line_info->function; | |
| 4492 | /* Set the address register to the first line in the function */ | |
| 4493 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 4494 | if (flag_verbose_asm) | |
| 4495 | fprintf (asm_out_file, "\t%s DW_LNE_set_address", | |
| 4496 | ASM_COMMENT_START); | |
| 4497 | fputc ('\n', asm_out_file); | |
| 4498 | output_uleb128 (1 + PTR_SIZE); | |
| 4499 | fputc ('\n', asm_out_file); | |
| 4500 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address); | |
| 4501 | fputc ('\n', asm_out_file); | |
| 4502 | ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label); | |
| 4503 | fputc ('\n', asm_out_file); | |
| 4504 | } | |
| 4505 | else | |
| 4506 | { | |
| 4507 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
| 4508 | if (flag_verbose_asm) | |
| 4509 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", | |
| 4510 | ASM_COMMENT_START); | |
| 4511 | fputc ('\n', asm_out_file); | |
| 4512 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); | |
| 4513 | fputc ('\n', asm_out_file); | |
| 4514 | } | |
| 4515 | if (line_info->dw_file_num != current_file) | |
| 4516 | { | |
| 4517 | current_file = line_info->dw_file_num; | |
| 4518 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file); | |
| 4519 | if (flag_verbose_asm) | |
| 4520 | { | |
| 4521 | fprintf (asm_out_file, | |
| 4522 | "\t%s DW_LNS_set_file", ASM_COMMENT_START); | |
| 4523 | } | |
| 4524 | fputc ('\n', asm_out_file); | |
| 4525 | output_uleb128 (current_file); | |
| 4526 | if (flag_verbose_asm) | |
| 4527 | { | |
| 4528 | fprintf (asm_out_file, "\t%s \"%s\"", | |
| 4529 | ASM_COMMENT_START, file_table[current_file]); | |
| 4530 | } | |
| 4531 | fputc ('\n', asm_out_file); | |
| 4532 | } | |
| 4533 | if (line_info->dw_line_num != current_line) | |
| 4534 | { | |
| 4535 | line_offset = line_info->dw_line_num - current_line; | |
| 4536 | line_delta = line_offset - DWARF_LINE_BASE; | |
| 4537 | current_line = line_info->dw_line_num; | |
| 4538 | if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1)) | |
| 4539 | { | |
| 4540 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, | |
| 4541 | DWARF_LINE_OPCODE_BASE + line_delta); | |
| 4542 | if (flag_verbose_asm) | |
| 4543 | { | |
| 4544 | fprintf (asm_out_file, | |
| 4545 | "\t%s line %d", ASM_COMMENT_START, current_line); | |
| 4546 | } | |
| 4547 | fputc ('\n', asm_out_file); | |
| 4548 | } | |
| 4549 | else | |
| 4550 | { | |
| 4551 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line); | |
| 4552 | if (flag_verbose_asm) | |
| 4553 | { | |
| 4554 | fprintf (asm_out_file, | |
| 4555 | "\t%s advance to line %d", | |
| 4556 | ASM_COMMENT_START, current_line); | |
| 4557 | } | |
| 4558 | fputc ('\n', asm_out_file); | |
| 4559 | output_sleb128 (line_offset); | |
| 4560 | fputc ('\n', asm_out_file); | |
| 4561 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy); | |
| 4562 | fputc ('\n', asm_out_file); | |
| 4563 | } | |
| 4564 | } | |
| 4565 | ++lt_index; | |
| 4566 | strcpy (prev_line_label, line_label); | |
| 4567 | ||
| 4568 | /* If we're done with a function, end its sequence. */ | |
| 4569 | if (lt_index == separate_line_info_table_in_use | |
| 4570 | || separate_line_info_table[lt_index].function != function) | |
| 4571 | { | |
| 4572 | current_file = 1; | |
| 4573 | current_line = 1; | |
| 4574 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc); | |
| 4575 | if (flag_verbose_asm) | |
| 4576 | fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc", | |
| 4577 | ASM_COMMENT_START); | |
| 4578 | fputc ('\n', asm_out_file); | |
| 5c90448c | 4579 | ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function); |
| e90b62db JM |
4580 | ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label); |
| 4581 | fputc ('\n', asm_out_file); | |
| 4582 | ||
| 4583 | /* Output the marker for the end of this sequence. */ | |
| 4584 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0); | |
| 4585 | if (flag_verbose_asm) | |
| 4586 | fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", | |
| 4587 | ASM_COMMENT_START); | |
| 4588 | fputc ('\n', asm_out_file); | |
| 4589 | output_uleb128 (1); | |
| 4590 | fputc ('\n', asm_out_file); | |
| 4591 | ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence); | |
| 4592 | fputc ('\n', asm_out_file); | |
| 4593 | } | |
| 4594 | } | |
| a3f97cbb JW |
4595 | } |
| 4596 | \f | |
| 4597 | /**************** attribute support utilities ********************************/ | |
| 4598 | ||
| 4599 | /* | |
| 4600 | * Given a pointer to a BLOCK node return non-zero if (and only if) the node | |
| 4601 | * in question represents the outermost pair of curly braces (i.e. the "body | |
| 4602 | * block") of a function or method. | |
| 4603 | * | |
| 4604 | * For any BLOCK node representing a "body block" of a function or method, the | |
| 4605 | * BLOCK_SUPERCONTEXT of the node will point to another BLOCK node which | |
| 4606 | * represents the outermost (function) scope for the function or method (i.e. | |
| 4607 | * the one which includes the formal parameters). The BLOCK_SUPERCONTEXT of | |
| 4608 | * *that* node in turn will point to the relevant FUNCTION_DECL node. | |
| 4609 | */ | |
| 4610 | inline int | |
| 4611 | is_body_block (stmt) | |
| 4612 | register tree stmt; | |
| 4613 | { | |
| 4614 | if (TREE_CODE (stmt) == BLOCK) | |
| 4615 | { | |
| 4616 | register tree parent = BLOCK_SUPERCONTEXT (stmt); | |
| 4617 | ||
| 4618 | if (TREE_CODE (parent) == BLOCK) | |
| 4619 | { | |
| 4620 | register tree grandparent = BLOCK_SUPERCONTEXT (parent); | |
| 4621 | ||
| 4622 | if (TREE_CODE (grandparent) == FUNCTION_DECL) | |
| 4623 | return 1; | |
| 4624 | } | |
| 4625 | } | |
| 4626 | return 0; | |
| 4627 | } | |
| 4628 | ||
| a3f97cbb JW |
4629 | /* Given a pointer to a tree node for some base type, return a pointer to |
| 4630 | a DIE that describes the given type. | |
| 4631 | ||
| 4632 | This routine must only be called for GCC type nodes that correspond to | |
| 4633 | Dwarf base (fundamental) types. */ | |
| 4634 | static dw_die_ref | |
| 4635 | base_type_die (type) | |
| 4636 | register tree type; | |
| 4637 | { | |
| a9d38797 JM |
4638 | register dw_die_ref base_type_result; |
| 4639 | register char *type_name; | |
| 4640 | register enum dwarf_type encoding; | |
| a3f97cbb | 4641 | |
| a9d38797 JM |
4642 | if (TREE_CODE (type) == ERROR_MARK |
| 4643 | || TREE_CODE (type) == VOID_TYPE) | |
| a3f97cbb JW |
4644 | return 0; |
| 4645 | ||
| a9d38797 JM |
4646 | { |
| 4647 | register tree name = TYPE_NAME (type); | |
| 4648 | if (TREE_CODE (name) == TYPE_DECL) | |
| 4649 | name = DECL_NAME (name); | |
| 4650 | type_name = IDENTIFIER_POINTER (name); | |
| 4651 | } | |
| 4652 | ||
| a3f97cbb JW |
4653 | switch (TREE_CODE (type)) |
| 4654 | { | |
| a3f97cbb | 4655 | case INTEGER_TYPE: |
| a9d38797 | 4656 | /* Carefully distinguish the C character types, without messing |
| a3f97cbb JW |
4657 | up if the language is not C. Note that we check only for the names |
| 4658 | that contain spaces; other names might occur by coincidence in other | |
| 4659 | languages. */ | |
| a9d38797 JM |
4660 | if (! (TYPE_PRECISION (type) == CHAR_TYPE_SIZE |
| 4661 | && (type == char_type_node | |
| 4662 | || ! strcmp (type_name, "signed char") | |
| 4663 | || ! strcmp (type_name, "unsigned char")))) | |
| a3f97cbb | 4664 | { |
| a9d38797 JM |
4665 | if (TREE_UNSIGNED (type)) |
| 4666 | encoding = DW_ATE_unsigned; | |
| 4667 | else | |
| 4668 | encoding = DW_ATE_signed; | |
| 4669 | break; | |
| a3f97cbb | 4670 | } |
| a9d38797 | 4671 | /* else fall through */ |
| a3f97cbb | 4672 | |
| a9d38797 JM |
4673 | case CHAR_TYPE: |
| 4674 | /* GNU Pascal/Ada CHAR type. Not used in C. */ | |
| 4675 | if (TREE_UNSIGNED (type)) | |
| 4676 | encoding = DW_ATE_unsigned_char; | |
| 4677 | else | |
| 4678 | encoding = DW_ATE_signed_char; | |
| a3f97cbb JW |
4679 | break; |
| 4680 | ||
| 4681 | case REAL_TYPE: | |
| a9d38797 | 4682 | encoding = DW_ATE_float; |
| a3f97cbb JW |
4683 | break; |
| 4684 | ||
| 4685 | case COMPLEX_TYPE: | |
| a9d38797 | 4686 | encoding = DW_ATE_complex_float; |
| a3f97cbb JW |
4687 | break; |
| 4688 | ||
| 4689 | case BOOLEAN_TYPE: | |
| a9d38797 JM |
4690 | /* GNU FORTRAN/Ada/C++ BOOLEAN type. */ |
| 4691 | encoding = DW_ATE_boolean; | |
| a3f97cbb JW |
4692 | break; |
| 4693 | ||
| 4694 | default: | |
| a9d38797 | 4695 | abort (); /* No other TREE_CODEs are Dwarf fundamental types. */ |
| a3f97cbb JW |
4696 | } |
| 4697 | ||
| a9d38797 JM |
4698 | base_type_result = new_die (DW_TAG_base_type, comp_unit_die); |
| 4699 | add_AT_string (base_type_result, DW_AT_name, type_name); | |
| 4700 | add_AT_unsigned (base_type_result, DW_AT_byte_size, | |
| 4701 | TYPE_PRECISION (type) / BITS_PER_UNIT); | |
| 4702 | add_AT_unsigned (base_type_result, DW_AT_encoding, encoding); | |
| a3f97cbb JW |
4703 | |
| 4704 | return base_type_result; | |
| 4705 | } | |
| 4706 | ||
| 4707 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a pointer to | |
| 4708 | the Dwarf "root" type for the given input type. The Dwarf "root" type of | |
| 4709 | a given type is generally the same as the given type, except that if the | |
| 4710 | given type is a pointer or reference type, then the root type of the given | |
| 4711 | type is the root type of the "basis" type for the pointer or reference | |
| 4712 | type. (This definition of the "root" type is recursive.) Also, the root | |
| 4713 | type of a `const' qualified type or a `volatile' qualified type is the | |
| 4714 | root type of the given type without the qualifiers. */ | |
| 4715 | static tree | |
| 4716 | root_type (type) | |
| 4717 | register tree type; | |
| 4718 | { | |
| 4719 | if (TREE_CODE (type) == ERROR_MARK) | |
| 4720 | return error_mark_node; | |
| 4721 | ||
| 4722 | switch (TREE_CODE (type)) | |
| 4723 | { | |
| 4724 | case ERROR_MARK: | |
| 4725 | return error_mark_node; | |
| 4726 | ||
| 4727 | case POINTER_TYPE: | |
| 4728 | case REFERENCE_TYPE: | |
| 4729 | return type_main_variant (root_type (TREE_TYPE (type))); | |
| 4730 | ||
| 4731 | default: | |
| 4732 | return type_main_variant (type); | |
| 4733 | } | |
| 4734 | } | |
| 4735 | ||
| 4736 | /* Given a pointer to an arbitrary ..._TYPE tree node, return non-zero if the | |
| 4737 | given input type is a Dwarf "fundamental" type. Otherwise return null. */ | |
| 4738 | inline int | |
| 4739 | is_base_type (type) | |
| 4740 | register tree type; | |
| 4741 | { | |
| 4742 | switch (TREE_CODE (type)) | |
| 4743 | { | |
| 4744 | case ERROR_MARK: | |
| 4745 | case VOID_TYPE: | |
| 4746 | case INTEGER_TYPE: | |
| 4747 | case REAL_TYPE: | |
| 4748 | case COMPLEX_TYPE: | |
| 4749 | case BOOLEAN_TYPE: | |
| 4750 | case CHAR_TYPE: | |
| 4751 | return 1; | |
| 4752 | ||
| 4753 | case SET_TYPE: | |
| 4754 | case ARRAY_TYPE: | |
| 4755 | case RECORD_TYPE: | |
| 4756 | case UNION_TYPE: | |
| 4757 | case QUAL_UNION_TYPE: | |
| 4758 | case ENUMERAL_TYPE: | |
| 4759 | case FUNCTION_TYPE: | |
| 4760 | case METHOD_TYPE: | |
| 4761 | case POINTER_TYPE: | |
| 4762 | case REFERENCE_TYPE: | |
| 4763 | case FILE_TYPE: | |
| 4764 | case OFFSET_TYPE: | |
| 4765 | case LANG_TYPE: | |
| 4766 | return 0; | |
| 4767 | ||
| 4768 | default: | |
| 4769 | abort (); | |
| 4770 | } | |
| 4771 | return 0; | |
| 4772 | } | |
| 4773 | ||
| 4774 | /* Given a pointer to an arbitrary ..._TYPE tree node, return a debugging | |
| 4775 | entry that chains various modifiers in front of the given type. */ | |
| 4776 | static dw_die_ref | |
| 4777 | modified_type_die (type, is_const_type, is_volatile_type, context_die) | |
| 4778 | register tree type; | |
| 4779 | register int is_const_type; | |
| 4780 | register int is_volatile_type; | |
| 4781 | register dw_die_ref context_die; | |
| 4782 | { | |
| 4783 | register enum tree_code code = TREE_CODE (type); | |
| 4784 | register dw_die_ref mod_type_die = NULL; | |
| 4785 | register dw_die_ref sub_die = NULL; | |
| 4786 | register tree item_type; | |
| 4787 | ||
| 4788 | if (code != ERROR_MARK) | |
| 4789 | { | |
| a9d38797 JM |
4790 | /* Take the MAIN_VARIANT here to avoid C typedef types. */ |
| 4791 | type = build_type_variant (TYPE_MAIN_VARIANT (type), | |
| 4792 | is_const_type, is_volatile_type); | |
| bdb669cb JM |
4793 | |
| 4794 | mod_type_die = lookup_type_die (type); | |
| 4795 | if (mod_type_die) | |
| 4796 | return mod_type_die; | |
| 4797 | ||
| a3f97cbb JW |
4798 | if (is_const_type) |
| 4799 | { | |
| ab72d377 | 4800 | mod_type_die = new_die (DW_TAG_const_type, comp_unit_die); |
| a9d38797 | 4801 | sub_die = modified_type_die (type, 0, is_volatile_type, context_die); |
| a3f97cbb JW |
4802 | } |
| 4803 | else if (is_volatile_type) | |
| 4804 | { | |
| ab72d377 | 4805 | mod_type_die = new_die (DW_TAG_volatile_type, comp_unit_die); |
| a9d38797 | 4806 | sub_die = modified_type_die (type, 0, 0, context_die); |
| a3f97cbb JW |
4807 | } |
| 4808 | else if (code == POINTER_TYPE) | |
| 4809 | { | |
| ab72d377 | 4810 | mod_type_die = new_die (DW_TAG_pointer_type, comp_unit_die); |
| a3f97cbb | 4811 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
| 61b32c02 | 4812 | #if 0 |
| a3f97cbb | 4813 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
| 61b32c02 | 4814 | #endif |
| a3f97cbb JW |
4815 | item_type = TREE_TYPE (type); |
| 4816 | sub_die = modified_type_die (item_type, | |
| 4817 | TYPE_READONLY (item_type), | |
| 4818 | TYPE_VOLATILE (item_type), | |
| 4819 | context_die); | |
| 4820 | } | |
| 4821 | else if (code == REFERENCE_TYPE) | |
| 4822 | { | |
| ab72d377 | 4823 | mod_type_die = new_die (DW_TAG_reference_type, comp_unit_die); |
| a3f97cbb | 4824 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
| 61b32c02 | 4825 | #if 0 |
| a3f97cbb | 4826 | add_AT_unsigned (mod_type_die, DW_AT_address_class, 0); |
| 61b32c02 | 4827 | #endif |
| a3f97cbb JW |
4828 | item_type = TREE_TYPE (type); |
| 4829 | sub_die = modified_type_die (item_type, | |
| 4830 | TYPE_READONLY (item_type), | |
| 4831 | TYPE_VOLATILE (item_type), | |
| 4832 | context_die); | |
| 4833 | } | |
| 4834 | else if (is_base_type (type)) | |
| 4835 | { | |
| 4836 | mod_type_die = base_type_die (type); | |
| 4837 | } | |
| 4838 | else | |
| 4839 | { | |
| 4b674448 JM |
4840 | gen_type_die (type, context_die); |
| 4841 | ||
| a3f97cbb JW |
4842 | /* We have to get the type_main_variant here (and pass that to the |
| 4843 | `lookup_type_die' routine) because the ..._TYPE node we have | |
| 4844 | might simply be a *copy* of some original type node (where the | |
| 4845 | copy was created to help us keep track of typedef names) and | |
| 4846 | that copy might have a different TYPE_UID from the original | |
| 4847 | ..._TYPE node. (Note that when `equate_type_number_to_die' is | |
| 4848 | labeling a given type DIE for future reference, it always only | |
| 4849 | handles DIEs representing *main variants*, and it never even | |
| 4850 | knows about non-main-variants.). */ | |
| 4851 | mod_type_die = lookup_type_die (type_main_variant (type)); | |
| a3f97cbb | 4852 | if (mod_type_die == NULL) |
| 4b674448 | 4853 | abort (); |
| a3f97cbb JW |
4854 | } |
| 4855 | } | |
| 4856 | if (sub_die != NULL) | |
| 4857 | { | |
| 4858 | add_AT_die_ref (mod_type_die, DW_AT_type, sub_die); | |
| 4859 | } | |
| bdb669cb | 4860 | equate_type_number_to_die (type, mod_type_die); |
| a3f97cbb JW |
4861 | return mod_type_die; |
| 4862 | } | |
| 4863 | ||
| a3f97cbb JW |
4864 | /* Given a pointer to an arbitrary ..._TYPE tree node, return true if it is |
| 4865 | an enumerated type. */ | |
| 4866 | inline int | |
| 4867 | type_is_enum (type) | |
| 4868 | register tree type; | |
| 4869 | { | |
| 4870 | return TREE_CODE (type) == ENUMERAL_TYPE; | |
| 4871 | } | |
| 4872 | ||
| 4873 | /* Return the register number described by a given RTL node. */ | |
| 4874 | static unsigned | |
| 4875 | reg_number (rtl) | |
| 4876 | register rtx rtl; | |
| 4877 | { | |
| 4878 | register unsigned regno = REGNO (rtl); | |
| 4879 | ||
| 4880 | if (regno >= FIRST_PSEUDO_REGISTER) | |
| 4881 | { | |
| 4882 | warning_with_decl (dwarf_last_decl, "internal regno botch: regno = %d\n", | |
| 4883 | regno); | |
| 4884 | regno = 0; | |
| 4885 | } | |
| 4886 | regno = DBX_REGISTER_NUMBER (regno); | |
| 4887 | return regno; | |
| 4888 | } | |
| 4889 | ||
| 4890 | /* Return a location descriptor that designates a machine register. */ | |
| 4891 | static dw_loc_descr_ref | |
| 4892 | reg_loc_descriptor (rtl) | |
| 4893 | register rtx rtl; | |
| 4894 | { | |
| 4895 | register dw_loc_descr_ref loc_result = NULL; | |
| 4896 | register unsigned reg = reg_number (rtl); | |
| 4897 | if (reg >= 0 && reg <= 31) | |
| 4898 | { | |
| 4899 | loc_result = new_loc_descr (DW_OP_reg0 + reg, 0); | |
| 4900 | } | |
| 4901 | else | |
| 4902 | { | |
| 4903 | loc_result = new_loc_descr (DW_OP_regx, reg, 0); | |
| 4904 | } | |
| 4905 | return loc_result; | |
| 4906 | } | |
| 4907 | ||
| 4908 | /* Return a location descriptor that designates a base+offset location. */ | |
| 4909 | static dw_loc_descr_ref | |
| 4910 | based_loc_descr (reg, offset) | |
| 4911 | unsigned reg; | |
| 4912 | long int offset; | |
| 4913 | { | |
| 4914 | register dw_loc_descr_ref loc_result; | |
| 810429b7 JM |
4915 | /* For the "frame base", we use the frame pointer or stack pointer |
| 4916 | registers, since the RTL for local variables is relative to one of | |
| 4917 | them. */ | |
| 4918 | register unsigned fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
| 4919 | ? FRAME_POINTER_REGNUM | |
| 4920 | : STACK_POINTER_REGNUM); | |
| a3f97cbb JW |
4921 | if (reg == fp_reg) |
| 4922 | { | |
| 810429b7 | 4923 | loc_result = new_loc_descr (DW_OP_fbreg, offset, 0); |
| a3f97cbb JW |
4924 | } |
| 4925 | else if (reg >= 0 && reg <= 31) | |
| 4926 | { | |
| 4927 | loc_result = new_loc_descr (DW_OP_breg0 + reg, offset); | |
| 4928 | } | |
| 4929 | else | |
| 4930 | { | |
| 4931 | loc_result = new_loc_descr (DW_OP_bregx, reg, offset); | |
| 4932 | } | |
| 4933 | return loc_result; | |
| 4934 | } | |
| 4935 | ||
| 4936 | /* Return true if this RTL expression describes a base+offset calculation. */ | |
| 4937 | inline int | |
| 4938 | is_based_loc (rtl) | |
| 4939 | register rtx rtl; | |
| 4940 | { | |
| 4941 | return GET_CODE (rtl) == PLUS | |
| 4942 | && ((GET_CODE (XEXP (rtl, 0)) == REG | |
| 4943 | && GET_CODE (XEXP (rtl, 1)) == CONST_INT)); | |
| 4944 | } | |
| 4945 | ||
| 4946 | /* The following routine converts the RTL for a variable or parameter | |
| 4947 | (resident in memory) into an equivalent Dwarf representation of a | |
| 4948 | mechanism for getting the address of that same variable onto the top of a | |
| 4949 | hypothetical "address evaluation" stack. | |
| 4950 | When creating memory location descriptors, we are effectively transforming | |
| 4951 | the RTL for a memory-resident object into its Dwarf postfix expression | |
| 4952 | equivalent. This routine recursively descends an RTL tree, turning | |
| 4953 | it into Dwarf postfix code as it goes. */ | |
| 4954 | static dw_loc_descr_ref | |
| 4955 | mem_loc_descriptor (rtl) | |
| 4956 | register rtx rtl; | |
| 4957 | { | |
| 4958 | dw_loc_descr_ref mem_loc_result = NULL; | |
| 4959 | /* Note that for a dynamically sized array, the location we will generate a | |
| 4960 | description of here will be the lowest numbered location which is | |
| 4961 | actually within the array. That's *not* necessarily the same as the | |
| 4962 | zeroth element of the array. */ | |
| 4963 | switch (GET_CODE (rtl)) | |
| 4964 | { | |
| 4965 | case SUBREG: | |
| 4966 | /* The case of a subreg may arise when we have a local (register) | |
| 4967 | variable or a formal (register) parameter which doesn't quite fill | |
| 4968 | up an entire register. For now, just assume that it is | |
| 4969 | legitimate to make the Dwarf info refer to the whole register which | |
| 4970 | contains the given subreg. */ | |
| 4971 | rtl = XEXP (rtl, 0); | |
| 4972 | /* Drop thru. */ | |
| 4973 | ||
| 4974 | case REG: | |
| 4975 | /* Whenever a register number forms a part of the description of the | |
| 4976 | method for calculating the (dynamic) address of a memory resident | |
| 4977 | object, DWARF rules require the register number be referred to as | |
| 4978 | a "base register". This distinction is not based in any way upon | |
| 4979 | what category of register the hardware believes the given register | |
| 4980 | belongs to. This is strictly DWARF terminology we're dealing with | |
| 4981 | here. Note that in cases where the location of a memory-resident | |
| 4982 | data object could be expressed as: OP_ADD (OP_BASEREG (basereg), | |
| 4983 | OP_CONST (0)) the actual DWARF location descriptor that we generate | |
| 4984 | may just be OP_BASEREG (basereg). This may look deceptively like | |
| 4985 | the object in question was allocated to a register (rather than in | |
| 4986 | memory) so DWARF consumers need to be aware of the subtle | |
| 4987 | distinction between OP_REG and OP_BASEREG. */ | |
| 4988 | mem_loc_result = based_loc_descr (reg_number (rtl), 0); | |
| 4989 | break; | |
| 4990 | ||
| 4991 | case MEM: | |
| 4992 | mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
| 4993 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0)); | |
| 4994 | break; | |
| 4995 | ||
| 4996 | case CONST: | |
| 4997 | case SYMBOL_REF: | |
| 4998 | mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0); | |
| 4999 | mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr; | |
| 5000 | mem_loc_result->dw_loc_oprnd1.v.val_addr = addr_to_string (rtl); | |
| 5001 | break; | |
| 5002 | ||
| 5003 | case PLUS: | |
| 5004 | if (is_based_loc (rtl)) | |
| 5005 | { | |
| 5006 | mem_loc_result = based_loc_descr ( | |
| 5007 | reg_number (XEXP (rtl, 0)), | |
| 5008 | INTVAL (XEXP (rtl, 1))); | |
| 5009 | } | |
| 5010 | else | |
| 5011 | { | |
| 5012 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0))); | |
| 5013 | add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1))); | |
| 5014 | add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_plus, 0, 0)); | |
| 5015 | } | |
| 5016 | break; | |
| 5017 | ||
| 5018 | case CONST_INT: | |
| 5019 | mem_loc_result = new_loc_descr (DW_OP_constu, INTVAL (rtl), 0); | |
| 5020 | break; | |
| 5021 | ||
| 5022 | default: | |
| 5023 | abort (); | |
| 5024 | } | |
| 5025 | return mem_loc_result; | |
| 5026 | } | |
| 5027 | ||
| 5028 | /* Output a proper Dwarf location descriptor for a variable or parameter | |
| 5029 | which is either allocated in a register or in a memory location. For a | |
| 5030 | register, we just generate an OP_REG and the register number. For a | |
| 5031 | memory location we provide a Dwarf postfix expression describing how to | |
| 5032 | generate the (dynamic) address of the object onto the address stack. */ | |
| 5033 | static dw_loc_descr_ref | |
| 5034 | loc_descriptor (rtl) | |
| 5035 | register rtx rtl; | |
| 5036 | { | |
| 5037 | dw_loc_descr_ref loc_result = NULL; | |
| 5038 | switch (GET_CODE (rtl)) | |
| 5039 | { | |
| 5040 | case SUBREG: | |
| 5041 | ||
| 5042 | /* The case of a subreg may arise when we have a local (register) | |
| 5043 | variable or a formal (register) parameter which doesn't quite fill | |
| 5044 | up an entire register. For now, just assume that it is | |
| 5045 | legitimate to make the Dwarf info refer to the whole register which | |
| 5046 | contains the given subreg. */ | |
| 5047 | ||
| 5048 | rtl = XEXP (rtl, 0); | |
| 5c90448c | 5049 | /* fall through */ |
| a3f97cbb JW |
5050 | |
| 5051 | case REG: | |
| 5c90448c | 5052 | loc_result = reg_loc_descriptor (rtl); |
| a3f97cbb JW |
5053 | break; |
| 5054 | ||
| 5055 | case MEM: | |
| 5056 | loc_result = mem_loc_descriptor (XEXP (rtl, 0)); | |
| 5057 | break; | |
| 5058 | ||
| 5059 | default: | |
| 5060 | abort (); /* Should never happen */ | |
| 5061 | } | |
| 5062 | return loc_result; | |
| 5063 | } | |
| 5064 | ||
| 5065 | /* Given an unsigned value, round it up to the lowest multiple of `boundary' | |
| 5066 | which is not less than the value itself. */ | |
| 5067 | inline unsigned | |
| 5068 | ceiling (value, boundary) | |
| 5069 | register unsigned value; | |
| 5070 | register unsigned boundary; | |
| 5071 | { | |
| 5072 | return (((value + boundary - 1) / boundary) * boundary); | |
| 5073 | } | |
| 5074 | ||
| 5075 | /* Given a pointer to what is assumed to be a FIELD_DECL node, return a | |
| 5076 | pointer to the declared type for the relevant field variable, or return | |
| 5077 | `integer_type_node' if the given node turns out to be an | |
| 5078 | ERROR_MARK node. */ | |
| 5079 | inline tree | |
| 5080 | field_type (decl) | |
| 5081 | register tree decl; | |
| 5082 | { | |
| 5083 | register tree type; | |
| 5084 | ||
| 5085 | if (TREE_CODE (decl) == ERROR_MARK) | |
| 5086 | return integer_type_node; | |
| 5087 | ||
| 5088 | type = DECL_BIT_FIELD_TYPE (decl); | |
| 5089 | if (type == NULL) | |
| 5090 | type = TREE_TYPE (decl); | |
| 5091 | ||
| 5092 | return type; | |
| 5093 | } | |
| 5094 | ||
| 5095 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
| 5096 | node, return the alignment in bits for the type, or else return | |
| 5097 | BITS_PER_WORD if the node actually turns out to be an | |
| 5098 | ERROR_MARK node. */ | |
| 5099 | inline unsigned | |
| 5100 | simple_type_align_in_bits (type) | |
| 5101 | register tree type; | |
| 5102 | { | |
| 5103 | return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD; | |
| 5104 | } | |
| 5105 | ||
| 5106 | /* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE | |
| 5107 | node, return the size in bits for the type if it is a constant, or else | |
| 5108 | return the alignment for the type if the type's size is not constant, or | |
| 5109 | else return BITS_PER_WORD if the type actually turns out to be an | |
| 5110 | ERROR_MARK node. */ | |
| 5111 | inline unsigned | |
| 5112 | simple_type_size_in_bits (type) | |
| 5113 | register tree type; | |
| 5114 | { | |
| 5115 | if (TREE_CODE (type) == ERROR_MARK) | |
| 5116 | return BITS_PER_WORD; | |
| 5117 | else | |
| 5118 | { | |
| 5119 | register tree type_size_tree = TYPE_SIZE (type); | |
| 5120 | ||
| 5121 | if (TREE_CODE (type_size_tree) != INTEGER_CST) | |
| 5122 | return TYPE_ALIGN (type); | |
| 5123 | ||
| 5124 | return (unsigned) TREE_INT_CST_LOW (type_size_tree); | |
| 5125 | } | |
| 5126 | } | |
| 5127 | ||
| 5128 | /* Given a pointer to what is assumed to be a FIELD_DECL node, compute and | |
| 5129 | return the byte offset of the lowest addressed byte of the "containing | |
| 5130 | object" for the given FIELD_DECL, or return 0 if we are unable to | |
| 5131 | determine what that offset is, either because the argument turns out to | |
| 5132 | be a pointer to an ERROR_MARK node, or because the offset is actually | |
| 5133 | variable. (We can't handle the latter case just yet). */ | |
| 5134 | static unsigned | |
| 5135 | field_byte_offset (decl) | |
| 5136 | register tree decl; | |
| 5137 | { | |
| 5138 | register unsigned type_align_in_bytes; | |
| 5139 | register unsigned type_align_in_bits; | |
| 5140 | register unsigned type_size_in_bits; | |
| 5141 | register unsigned object_offset_in_align_units; | |
| 5142 | register unsigned object_offset_in_bits; | |
| 5143 | register unsigned object_offset_in_bytes; | |
| 5144 | register tree type; | |
| 5145 | register tree bitpos_tree; | |
| 5146 | register tree field_size_tree; | |
| 5147 | register unsigned bitpos_int; | |
| 5148 | register unsigned deepest_bitpos; | |
| 5149 | register unsigned field_size_in_bits; | |
| 5150 | ||
| 5151 | if (TREE_CODE (decl) == ERROR_MARK) | |
| 5152 | return 0; | |
| 5153 | ||
| 5154 | if (TREE_CODE (decl) != FIELD_DECL) | |
| 5155 | abort (); | |
| 5156 | ||
| 5157 | type = field_type (decl); | |
| 5158 | ||
| 5159 | bitpos_tree = DECL_FIELD_BITPOS (decl); | |
| 5160 | field_size_tree = DECL_SIZE (decl); | |
| 5161 | ||
| 5162 | /* We cannot yet cope with fields whose positions or sizes are variable, so | |
| 5163 | for now, when we see such things, we simply return 0. Someday, we may | |
| 5164 | be able to handle such cases, but it will be damn difficult. */ | |
| 5165 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
| 5166 | return 0; | |
| 5167 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); | |
| 5168 | ||
| 5169 | if (TREE_CODE (field_size_tree) != INTEGER_CST) | |
| 5170 | return 0; | |
| 5171 | field_size_in_bits = (unsigned) TREE_INT_CST_LOW (field_size_tree); | |
| 5172 | ||
| 5173 | type_size_in_bits = simple_type_size_in_bits (type); | |
| 5174 | ||
| 5175 | type_align_in_bits = simple_type_align_in_bits (type); | |
| 5176 | type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT; | |
| 5177 | ||
| 5178 | /* Note that the GCC front-end doesn't make any attempt to keep track of | |
| 5179 | the starting bit offset (relative to the start of the containing | |
| 5180 | structure type) of the hypothetical "containing object" for a bit- | |
| 5181 | field. Thus, when computing the byte offset value for the start of the | |
| 5182 | "containing object" of a bit-field, we must deduce this information on | |
| 5183 | our own. This can be rather tricky to do in some cases. For example, | |
| 5184 | handling the following structure type definition when compiling for an | |
| 5185 | i386/i486 target (which only aligns long long's to 32-bit boundaries) | |
| 5186 | can be very tricky: | |
| 5187 | ||
| 5188 | struct S { int field1; long long field2:31; }; | |
| 5189 | ||
| 5190 | Fortunately, there is a simple rule-of-thumb which can be | |
| 5191 | used in such cases. When compiling for an i386/i486, GCC will allocate | |
| 5192 | 8 bytes for the structure shown above. It decides to do this based upon | |
| 5193 | one simple rule for bit-field allocation. Quite simply, GCC allocates | |
| 5194 | each "containing object" for each bit-field at the first (i.e. lowest | |
| 5195 | addressed) legitimate alignment boundary (based upon the required | |
| 5196 | minimum alignment for the declared type of the field) which it can | |
| 5197 | possibly use, subject to the condition that there is still enough | |
| 5198 | available space remaining in the containing object (when allocated at | |
| 5199 | the selected point) to fully accommodate all of the bits of the | |
| 5200 | bit-field itself. This simple rule makes it obvious why GCC allocates | |
| 5201 | 8 bytes for each object of the structure type shown above. When looking | |
| 5202 | for a place to allocate the "containing object" for `field2', the | |
| 5203 | compiler simply tries to allocate a 64-bit "containing object" at each | |
| 5204 | successive 32-bit boundary (starting at zero) until it finds a place to | |
| 5205 | allocate that 64- bit field such that at least 31 contiguous (and | |
| 5206 | previously unallocated) bits remain within that selected 64 bit field. | |
| 5207 | (As it turns out, for the example above, the compiler finds that it is | |
| 5208 | OK to allocate the "containing object" 64-bit field at bit-offset zero | |
| 5209 | within the structure type.) Here we attempt to work backwards from the | |
| 5210 | limited set of facts we're given, and we try to deduce from those facts, | |
| 5211 | where GCC must have believed that the containing object started (within | |
| 5212 | the structure type). The value we deduce is then used (by the callers of | |
| 5213 | this routine) to generate DW_AT_location and DW_AT_bit_offset attributes | |
| 5214 | for fields (both bit-fields and, in the case of DW_AT_location, regular | |
| 5215 | fields as well). */ | |
| 5216 | ||
| 5217 | /* Figure out the bit-distance from the start of the structure to the | |
| 5218 | "deepest" bit of the bit-field. */ | |
| 5219 | deepest_bitpos = bitpos_int + field_size_in_bits; | |
| 5220 | ||
| 5221 | /* This is the tricky part. Use some fancy footwork to deduce where the | |
| 5222 | lowest addressed bit of the containing object must be. */ | |
| 5223 | object_offset_in_bits | |
| 5224 | = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits; | |
| 5225 | ||
| 5226 | /* Compute the offset of the containing object in "alignment units". */ | |
| 5227 | object_offset_in_align_units = object_offset_in_bits / type_align_in_bits; | |
| 5228 | ||
| 5229 | /* Compute the offset of the containing object in bytes. */ | |
| 5230 | object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes; | |
| 5231 | ||
| 5232 | return object_offset_in_bytes; | |
| 5233 | } | |
| 5234 | ||
| 5235 | ||
| 5236 | \f | |
| 5237 | /****************************** attributes *********************************/ | |
| 5238 | ||
| 5239 | /* The following routines define various Dwarf attributes | |
| 5240 | (and any data associated with them). */ | |
| 5241 | ||
| 5242 | ||
| 5243 | /* Output the form of location attributes suitable for whole variables and | |
| 5244 | whole parameters. Note that the location attributes for struct fields are | |
| 5245 | generated by the routine `data_member_location_attribute' below. */ | |
| 5246 | static void | |
| 5247 | add_location_attribute (die, rtl) | |
| 5248 | dw_die_ref die; | |
| 5249 | register rtx rtl; | |
| 5250 | { | |
| 5251 | dw_loc_descr_ref loc_descr = NULL; | |
| 5252 | ||
| 5253 | /* Handle a special case. If we are about to output a location descriptor | |
| 5254 | for a variable or parameter which has been optimized out of existence, | |
| 5255 | don't do that. Instead we output a null location descriptor value as | |
| 5256 | part of the location attribute. A variable which has been optimized out | |
| 5257 | of existence will have a DECL_RTL value which denotes a pseudo-reg. | |
| 5258 | Currently, in some rare cases, variables can have DECL_RTL values which | |
| 5259 | look like (MEM (REG pseudo-reg#)). These cases are due to bugs | |
| 5260 | elsewhere in the compiler. We treat such cases as if the variable(s) in | |
| 5261 | question had been optimized out of existence. Note that in all cases | |
| 5262 | where we wish to express the fact that a variable has been optimized out | |
| 5263 | of existence, we do not simply suppress the generation of the entire | |
| 5264 | location attribute because the absence of a location attribute in | |
| 5265 | certain kinds of DIEs is used to indicate something else entirely... | |
| 5266 | i.e. that the DIE represents an object declaration, but not a | |
| 5267 | definition. So sayeth the PLSIG. */ | |
| 5268 | if (!is_pseudo_reg (rtl) | |
| 5269 | && (GET_CODE (rtl) != MEM | |
| 5270 | || !is_pseudo_reg (XEXP (rtl, 0)))) | |
| 5271 | { | |
| 5272 | loc_descr = loc_descriptor (eliminate_regs (rtl, 0, NULL_RTX)); | |
| 5273 | } | |
| 5274 | ||
| 5275 | #ifdef MIPS_DEBUGGING_INFO | |
| 5276 | /* ??? SGI's dwarf reader is buggy, and will not accept a zero size | |
| 5277 | location descriptor. Lets just use r0 for now to represent a | |
| 5278 | variable that has been optimized away. */ | |
| 5279 | if (loc_descr == NULL) | |
| 5280 | { | |
| 5281 | loc_descr = loc_descriptor (gen_rtx (REG, word_mode, 0)); | |
| 5282 | } | |
| 5283 | #endif | |
| 5284 | ||
| 5285 | add_AT_loc (die, DW_AT_location, loc_descr); | |
| 5286 | } | |
| 5287 | ||
| 5288 | /* Attach the specialized form of location attribute used for data | |
| 5289 | members of struct and union types. In the special case of a | |
| 5290 | FIELD_DECL node which represents a bit-field, the "offset" part | |
| 5291 | of this special location descriptor must indicate the distance | |
| 5292 | in bytes from the lowest-addressed byte of the containing struct | |
| 5293 | or union type to the lowest-addressed byte of the "containing | |
| 5294 | object" for the bit-field. (See the `field_byte_offset' function | |
| 5295 | above).. For any given bit-field, the "containing object" is a | |
| 5296 | hypothetical object (of some integral or enum type) within which | |
| 5297 | the given bit-field lives. The type of this hypothetical | |
| 5298 | "containing object" is always the same as the declared type of | |
| 5299 | the individual bit-field itself (for GCC anyway... the DWARF | |
| 5300 | spec doesn't actually mandate this). Note that it is the size | |
| 5301 | (in bytes) of the hypothetical "containing object" which will | |
| 5302 | be given in the DW_AT_byte_size attribute for this bit-field. | |
| 5303 | (See the `byte_size_attribute' function below.) It is also used | |
| 5304 | when calculating the value of the DW_AT_bit_offset attribute. | |
| 5305 | (See the `bit_offset_attribute' function below). */ | |
| 5306 | static void | |
| 5307 | add_data_member_location_attribute (die, decl) | |
| 5308 | register dw_die_ref die; | |
| 5309 | register tree decl; | |
| 5310 | { | |
| 61b32c02 | 5311 | register unsigned long offset; |
| a3f97cbb JW |
5312 | register dw_loc_descr_ref loc_descr; |
| 5313 | register enum dwarf_location_atom op; | |
| 5314 | ||
| 61b32c02 JM |
5315 | if (TREE_CODE (decl) == TREE_VEC) |
| 5316 | offset = TREE_INT_CST_LOW (BINFO_OFFSET (decl)); | |
| 5317 | else | |
| 5318 | offset = field_byte_offset (decl); | |
| 5319 | ||
| a3f97cbb JW |
5320 | /* The DWARF2 standard says that we should assume that the structure address |
| 5321 | is already on the stack, so we can specify a structure field address | |
| 5322 | by using DW_OP_plus_uconst. */ | |
| 5323 | #ifdef MIPS_DEBUGGING_INFO | |
| 5324 | /* ??? The SGI dwarf reader does not handle the DW_OP_plus_uconst operator | |
| 5325 | correctly. It works only if we leave the offset on the stack. */ | |
| 5326 | op = DW_OP_constu; | |
| 5327 | #else | |
| 5328 | op = DW_OP_plus_uconst; | |
| 5329 | #endif | |
| 5330 | loc_descr = new_loc_descr (op, offset, 0); | |
| 5331 | add_AT_loc (die, DW_AT_data_member_location, loc_descr); | |
| 5332 | } | |
| 5333 | ||
| 5334 | /* Attach an DW_AT_const_value attribute for a variable or a parameter which | |
| 5335 | does not have a "location" either in memory or in a register. These | |
| 5336 | things can arise in GNU C when a constant is passed as an actual parameter | |
| 5337 | to an inlined function. They can also arise in C++ where declared | |
| 5338 | constants do not necessarily get memory "homes". */ | |
| 5339 | static void | |
| 5340 | add_const_value_attribute (die, rtl) | |
| 5341 | register dw_die_ref die; | |
| 5342 | register rtx rtl; | |
| 5343 | { | |
| 5344 | switch (GET_CODE (rtl)) | |
| 5345 | { | |
| 5346 | case CONST_INT: | |
| 5347 | /* Note that a CONST_INT rtx could represent either an integer or a | |
| 5348 | floating-point constant. A CONST_INT is used whenever the constant | |
| 5349 | will fit into a single word. In all such cases, the original mode | |
| 5350 | of the constant value is wiped out, and the CONST_INT rtx is | |
| 5351 | assigned VOIDmode. */ | |
| 5352 | add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl)); | |
| 5353 | break; | |
| 5354 | ||
| 5355 | case CONST_DOUBLE: | |
| 5356 | /* Note that a CONST_DOUBLE rtx could represent either an integer or a | |
| 5357 | floating-point constant. A CONST_DOUBLE is used whenever the | |
| 5358 | constant requires more than one word in order to be adequately | |
| 5359 | represented. In all such cases, the original mode of the constant | |
| 5360 | value is preserved as the mode of the CONST_DOUBLE rtx, but for | |
| 5361 | simplicity we always just output CONST_DOUBLEs using 8 bytes. */ | |
| 5362 | add_AT_double (die, DW_AT_const_value, | |
| 5363 | (unsigned) CONST_DOUBLE_HIGH (rtl), | |
| 5364 | (unsigned) CONST_DOUBLE_LOW (rtl)); | |
| 5365 | break; | |
| 5366 | ||
| 5367 | case CONST_STRING: | |
| 5368 | add_AT_string (die, DW_AT_const_value, XSTR (rtl, 0)); | |
| 5369 | break; | |
| 5370 | ||
| 5371 | case SYMBOL_REF: | |
| 5372 | case LABEL_REF: | |
| 5373 | case CONST: | |
| 5374 | add_AT_addr (die, DW_AT_const_value, addr_to_string (rtl)); | |
| 5375 | break; | |
| 5376 | ||
| 5377 | case PLUS: | |
| 5378 | /* In cases where an inlined instance of an inline function is passed | |
| 5379 | the address of an `auto' variable (which is local to the caller) we | |
| 5380 | can get a situation where the DECL_RTL of the artificial local | |
| 5381 | variable (for the inlining) which acts as a stand-in for the | |
| 5382 | corresponding formal parameter (of the inline function) will look | |
| 5383 | like (plus:SI (reg:SI FRAME_PTR) (const_int ...)). This is not | |
| 5384 | exactly a compile-time constant expression, but it isn't the address | |
| 5385 | of the (artificial) local variable either. Rather, it represents the | |
| 5386 | *value* which the artificial local variable always has during its | |
| 5387 | lifetime. We currently have no way to represent such quasi-constant | |
| 5388 | values in Dwarf, so for now we just punt and generate an | |
| 5389 | DW_AT_const_value attribute with null address. */ | |
| 5390 | add_AT_addr (die, DW_AT_const_value, addr_to_string (const0_rtx)); | |
| 5391 | break; | |
| 5392 | ||
| 5393 | default: | |
| 5394 | /* No other kinds of rtx should be possible here. */ | |
| 5395 | abort (); | |
| 5396 | } | |
| 5397 | ||
| 5398 | } | |
| 5399 | ||
| 5400 | /* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value | |
| 5401 | data attribute for a variable or a parameter. We generate the | |
| 5402 | DW_AT_const_value attribute only in those cases where the given variable | |
| 5403 | or parameter does not have a true "location" either in memory or in a | |
| 5404 | register. This can happen (for example) when a constant is passed as an | |
| 5405 | actual argument in a call to an inline function. (It's possible that | |
| 5406 | these things can crop up in other ways also.) Note that one type of | |
| 5407 | constant value which can be passed into an inlined function is a constant | |
| 5408 | pointer. This can happen for example if an actual argument in an inlined | |
| 5409 | function call evaluates to a compile-time constant address. */ | |
| 5410 | static void | |
| 5411 | add_location_or_const_value_attribute (die, decl) | |
| 5412 | register dw_die_ref die; | |
| 5413 | register tree decl; | |
| 5414 | { | |
| 5415 | register rtx rtl; | |
| 5416 | register tree declared_type; | |
| 5417 | register tree passed_type; | |
| 5418 | ||
| 5419 | if (TREE_CODE (decl) == ERROR_MARK) | |
| 5420 | { | |
| 5421 | return; | |
| 5422 | } | |
| 5423 | if ((TREE_CODE (decl) != VAR_DECL) | |
| 5424 | && (TREE_CODE (decl) != PARM_DECL)) | |
| 5425 | { | |
| 5426 | /* Should never happen. */ | |
| 5427 | abort (); | |
| 5428 | return; | |
| 5429 | } | |
| 5430 | /* Here we have to decide where we are going to say the parameter "lives" | |
| 5431 | (as far as the debugger is concerned). We only have a couple of | |
| 5432 | choices. GCC provides us with DECL_RTL and with DECL_INCOMING_RTL. | |
| 5433 | DECL_RTL normally indicates where the parameter lives during most of the | |
| 5434 | activa- tion of the function. If optimization is enabled however, this | |
| 5435 | could be either NULL or else a pseudo-reg. Both of those cases indicate | |
| 5436 | that the parameter doesn't really live anywhere (as far as the code | |
| 5437 | generation parts of GCC are concerned) during most of the function's | |
| 5438 | activation. That will happen (for example) if the parameter is never | |
| 5439 | referenced within the function. We could just generate a location | |
| 5440 | descriptor here for all non-NULL non-pseudo values of DECL_RTL and | |
| 5441 | ignore all of the rest, but we can be a little nicer than that if we | |
| 5442 | also consider DECL_INCOMING_RTL in cases where DECL_RTL is NULL or is a | |
| 5443 | pseudo-reg. Note however that we can only get away with using | |
| 5444 | DECL_INCOMING_RTL as a backup substitute for DECL_RTL in certain limited | |
| 5445 | cases. In cases where DECL_ARG_TYPE(decl) indicates the same type as | |
| 5446 | TREE_TYPE(decl) we can be sure that the parameter was passed using the | |
| 5447 | same type as it is declared to have within the function, and that its | |
| 5448 | DECL_INCOMING_RTL points us to a place where a value of that type is | |
| 5449 | passed. In cases where DECL_ARG_TYPE(decl) and TREE_TYPE(decl) are | |
| 5450 | different types however, we cannot (in general) use DECL_INCOMING_RTL as | |
| 5451 | a backup substitute for DECL_RTL because in these cases, | |
| 5452 | DECL_INCOMING_RTL points us to a value of some type which is *different* | |
| 5453 | from the type of the parameter itself. Thus, if we tried to use | |
| 5454 | DECL_INCOMING_RTL to generate a location attribute in such cases, the | |
| 5455 | debugger would end up (for example) trying to fetch a `float' from a | |
| 5456 | place which actually contains the first part of a `double'. That would | |
| 5457 | lead to really incorrect and confusing output at debug-time, and we | |
| 5458 | don't want that now do we? So in general, we DO NOT use | |
| 5459 | DECL_INCOMING_RTL as a backup for DECL_RTL in cases where | |
| 5460 | DECL_ARG_TYPE(decl) != TREE_TYPE(decl). There are a couple of cute | |
| 5461 | exceptions however. On little-endian machines we can get away with | |
| 5462 | using DECL_INCOMING_RTL even when DECL_ARG_TYPE(decl) is not the same as | |
| 5463 | TREE_TYPE(decl) but only when DECL_ARG_TYPE(decl) is an integral type | |
| 5464 | which is smaller than TREE_TYPE(decl). These cases arise when (on a | |
| 5465 | little-endian machine) a non-prototyped function has a parameter | |
| 5466 | declared to be of type `short' or `char'. In such cases, | |
| 5467 | TREE_TYPE(decl) will be `short' or `char', DECL_ARG_TYPE(decl) will be | |
| 5468 | `int', and DECL_INCOMING_RTL will point to the lowest-order byte of the | |
| 5469 | passed `int' value. If the debugger then uses that address to fetch a | |
| 5470 | `short' or a `char' (on a little-endian machine) the result will be the | |
| 5471 | correct data, so we allow for such exceptional cases below. Note that | |
| 5472 | our goal here is to describe the place where the given formal parameter | |
| 5473 | lives during most of the function's activation (i.e. between the end of | |
| 5474 | the prologue and the start of the epilogue). We'll do that as best as | |
| 5475 | we can. Note however that if the given formal parameter is modified | |
| 5476 | sometime during the execution of the function, then a stack backtrace | |
| 5477 | (at debug-time) will show the function as having been called with the | |
| 5478 | *new* value rather than the value which was originally passed in. This | |
| 5479 | happens rarely enough that it is not a major problem, but it *is* a | |
| 9a666dda | 5480 | problem, and I'd like to fix it. A future version of dwarf2out.c may |
| a3f97cbb JW |
5481 | generate two additional attributes for any given DW_TAG_formal_parameter |
| 5482 | DIE which will describe the "passed type" and the "passed location" for | |
| 5483 | the given formal parameter in addition to the attributes we now generate | |
| 5484 | to indicate the "declared type" and the "active location" for each | |
| 5485 | parameter. This additional set of attributes could be used by debuggers | |
| 5486 | for stack backtraces. Separately, note that sometimes DECL_RTL can be | |
| 5487 | NULL and DECL_INCOMING_RTL can be NULL also. This happens (for example) | |
| 5488 | for inlined-instances of inline function formal parameters which are | |
| 5489 | never referenced. This really shouldn't be happening. All PARM_DECL | |
| 5490 | nodes should get valid non-NULL DECL_INCOMING_RTL values, but | |
| 5491 | integrate.c doesn't currently generate these values for inlined | |
| 5492 | instances of inline function parameters, so when we see such cases, we | |
| 5493 | are just SOL (shit-out-of-luck) for the time being (until integrate.c | |
| 5494 | gets fixed). */ | |
| 5495 | ||
| 5496 | /* Use DECL_RTL as the "location" unless we find something better. */ | |
| 5497 | rtl = DECL_RTL (decl); | |
| 5498 | ||
| 5499 | if (TREE_CODE (decl) == PARM_DECL) | |
| 5500 | { | |
| 5501 | if (rtl == NULL_RTX || is_pseudo_reg (rtl)) | |
| 5502 | { | |
| 5503 | declared_type = type_main_variant (TREE_TYPE (decl)); | |
| 5504 | passed_type = type_main_variant (DECL_ARG_TYPE (decl)); | |
| 5505 | /* This decl represents a formal parameter which was | |
| 5506 | optimized out. | |
| 5507 | ||
| 5508 | Note that DECL_INCOMING_RTL may be NULL in here, but we handle | |
| 5509 | all* cases where (rtl == NULL_RTX) just below. */ | |
| 5510 | if (declared_type == passed_type) | |
| 5511 | { | |
| 5512 | rtl = DECL_INCOMING_RTL (decl); | |
| 5513 | } | |
| 5514 | else if (!BYTES_BIG_ENDIAN) | |
| 5515 | { | |
| 5516 | if (TREE_CODE (declared_type) == INTEGER_TYPE) | |
| 5517 | { | |
| 5518 | if (TYPE_SIZE (declared_type) <= TYPE_SIZE (passed_type)) | |
| 5519 | { | |
| 5520 | rtl = DECL_INCOMING_RTL (decl); | |
| 5521 | } | |
| 5522 | } | |
| 5523 | } | |
| a3f97cbb JW |
5524 | } |
| 5525 | } | |
| 61b32c02 JM |
5526 | if (rtl == NULL_RTX) |
| 5527 | return; | |
| 5528 | ||
| a3f97cbb JW |
5529 | switch (GET_CODE (rtl)) |
| 5530 | { | |
| 5531 | case CONST_INT: | |
| 5532 | case CONST_DOUBLE: | |
| 5533 | case CONST_STRING: | |
| 5534 | case SYMBOL_REF: | |
| 5535 | case LABEL_REF: | |
| 5536 | case CONST: | |
| 5537 | case PLUS: | |
| 5538 | /* DECL_RTL could be (plus (reg ...) (const_int ...)) */ | |
| 5539 | add_const_value_attribute (die, rtl); | |
| 5540 | break; | |
| 5541 | ||
| 5542 | case MEM: | |
| 5543 | case REG: | |
| 5544 | case SUBREG: | |
| 5545 | add_location_attribute (die, rtl); | |
| 5546 | break; | |
| 5547 | ||
| 5548 | default: | |
| 5549 | abort (); /* Should never happen. */ | |
| 5550 | } | |
| 5551 | } | |
| 5552 | ||
| 5553 | /* Generate an DW_AT_name attribute given some string value to be included as | |
| 5554 | the value of the attribute. */ | |
| 5555 | inline void | |
| 5556 | add_name_attribute (die, name_string) | |
| 5557 | register dw_die_ref die; | |
| 5558 | register char *name_string; | |
| 5559 | { | |
| 5560 | if (name_string && *name_string) | |
| 5561 | { | |
| 5562 | add_AT_string (die, DW_AT_name, name_string); | |
| 5563 | } | |
| 5564 | } | |
| 5565 | ||
| 5566 | /* Given a tree node describing an array bound (either lower or upper) output | |
| a9d38797 JM |
5567 | a representation for that bound. |
| 5568 | ||
| 5569 | FIXME: This uses location descriptions for variable bounds, whereas the | |
| 5570 | DWARF-2 spec only allowes for constants or DIE references. */ | |
| a3f97cbb JW |
5571 | static void |
| 5572 | add_bound_info (subrange_die, bound_attr, bound) | |
| 5573 | register dw_die_ref subrange_die; | |
| 5574 | register enum dwarf_attribute bound_attr; | |
| 5575 | register tree bound; | |
| 5576 | { | |
| 5577 | register dw_loc_descr_ref bound_loc = NULL; | |
| 5578 | register unsigned bound_value = 0; | |
| 5579 | switch (TREE_CODE (bound)) | |
| 5580 | { | |
| 5581 | case ERROR_MARK: | |
| 5582 | return; | |
| 5583 | ||
| 5584 | /* All fixed-bounds are represented by INTEGER_CST nodes. */ | |
| 5585 | case INTEGER_CST: | |
| 5586 | bound_value = TREE_INT_CST_LOW (bound); | |
| 5587 | /* TODO: we need to check for C language below, or some flag | |
| 5588 | derived from the language. C implies a lower bound of 0. */ | |
| 5589 | if (!(bound_attr == DW_AT_lower_bound && bound_value == 0)) | |
| 5590 | { | |
| 5591 | add_AT_unsigned (subrange_die, bound_attr, bound_value); | |
| 5592 | } | |
| 5593 | break; | |
| 5594 | ||
| 5595 | /* Dynamic bounds may be represented by NOP_EXPR nodes containing | |
| 5596 | SAVE_EXPR nodes. */ | |
| 5597 | case NOP_EXPR: | |
| 5598 | bound = TREE_OPERAND (bound, 0); | |
| 5599 | /* ... fall thru... */ | |
| 5600 | ||
| 5601 | case SAVE_EXPR: | |
| 5602 | /* If optimization is turned on, the SAVE_EXPRs that describe how to | |
| 5603 | access the upper bound values are essentially bogus. They only | |
| 5604 | describe (at best) how to get at these values at the points in the | |
| 5605 | generated code right after they have just been computed. Worse yet, | |
| 5606 | in the typical case, the upper bound values will not even *be* | |
| 5607 | computed in the optimized code, so these SAVE_EXPRs are entirely | |
| 5608 | bogus. In order to compensate for this fact, we check here to see if | |
| 5609 | optimization is enabled, and if so, we effectively create an empty | |
| 5610 | location description for the (unknown and unknowable) upper bound. | |
| 5611 | This should not cause too much trouble for existing (stupid?) | |
| 5612 | debuggers because they have to deal with empty upper bounds location | |
| 5613 | descriptions anyway in order to be able to deal with incomplete array | |
| 5614 | types. Of course an intelligent debugger (GDB?) should be able to | |
| 5615 | comprehend that a missing upper bound specification in a array type | |
| 5616 | used for a storage class `auto' local array variable indicates that | |
| 5617 | the upper bound is both unknown (at compile- time) and unknowable (at | |
| 5618 | run-time) due to optimization. */ | |
| 5619 | if (!optimize) | |
| 5620 | { | |
| 5621 | bound_loc = mem_loc_descriptor ( | |
| 5622 | eliminate_regs (SAVE_EXPR_RTL (bound), | |
| 5623 | 0, NULL_RTX)); | |
| 5624 | } | |
| 5625 | else | |
| 5626 | { | |
| 5627 | bound_loc = NULL; | |
| 5628 | } | |
| 5629 | add_AT_loc (subrange_die, bound_attr, bound_loc); | |
| 5630 | break; | |
| 5631 | ||
| 5632 | default: | |
| 5633 | abort (); | |
| 5634 | } | |
| 5635 | } | |
| 5636 | ||
| 5637 | /* Note that the block of subscript information for an array type also | |
| 5638 | includes information about the element type of type given array type. */ | |
| 5639 | static void | |
| 5640 | add_subscript_info (type_die, type) | |
| 5641 | register dw_die_ref type_die; | |
| 5642 | register tree type; | |
| 5643 | { | |
| 5644 | register unsigned dimension_number; | |
| 5645 | register tree lower, upper; | |
| 5646 | register dw_die_ref subrange_die; | |
| 5647 | ||
| 5648 | /* The GNU compilers represent multidimensional array types as sequences of | |
| 5649 | one dimensional array types whose element types are themselves array | |
| 5650 | types. Here we squish that down, so that each multidimensional array | |
| 5651 | type gets only one array_type DIE in the Dwarf debugging info. The draft | |
| 5652 | Dwarf specification say that we are allowed to do this kind of | |
| 5653 | compression in C (because there is no difference between an array or | |
| 5654 | arrays and a multidimensional array in C) but for other source languages | |
| 5655 | (e.g. Ada) we probably shouldn't do this. */ | |
| 5656 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a | |
| 5657 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
| 5658 | We work around this by disabling this feature. See also | |
| 5659 | gen_array_type_die. */ | |
| 5660 | #ifndef MIPS_DEBUGGING_INFO | |
| 5661 | for (dimension_number = 0; | |
| 5662 | TREE_CODE (type) == ARRAY_TYPE; | |
| 5663 | type = TREE_TYPE (type), dimension_number++) | |
| 5664 | { | |
| 5665 | #endif | |
| 5666 | register tree domain = TYPE_DOMAIN (type); | |
| 5667 | ||
| 5668 | /* Arrays come in three flavors: Unspecified bounds, fixed bounds, | |
| 5669 | and (in GNU C only) variable bounds. Handle all three forms | |
| 5670 | here. */ | |
| 5671 | subrange_die = new_die (DW_TAG_subrange_type, type_die); | |
| 5672 | if (domain) | |
| 5673 | { | |
| 5674 | /* We have an array type with specified bounds. */ | |
| 5675 | lower = TYPE_MIN_VALUE (domain); | |
| 5676 | upper = TYPE_MAX_VALUE (domain); | |
| 5677 | ||
| a9d38797 JM |
5678 | /* define the index type. */ |
| 5679 | if (TREE_TYPE (domain)) | |
| 5680 | add_type_attribute (subrange_die, TREE_TYPE (domain), 0, 0, | |
| 5681 | type_die); | |
| 5682 | ||
| 5683 | if (! is_c_family () && ! is_fortran ()) | |
| 5684 | add_bound_info (subrange_die, DW_AT_lower_bound, lower); | |
| a3f97cbb JW |
5685 | add_bound_info (subrange_die, DW_AT_upper_bound, upper); |
| 5686 | } | |
| 5687 | else | |
| 5688 | { | |
| a9d38797 JM |
5689 | /* We have an array type with an unspecified length. The DWARF-2 |
| 5690 | spec does not say how to handle this; let's just leave out the | |
| 5691 | bounds. */ | |
| a3f97cbb JW |
5692 | } |
| 5693 | #ifndef MIPS_DEBUGGING_INFO | |
| 5694 | } | |
| 5695 | #endif | |
| 5696 | } | |
| 5697 | ||
| 5698 | static void | |
| 5699 | add_byte_size_attribute (die, tree_node) | |
| 5700 | dw_die_ref die; | |
| 5701 | register tree tree_node; | |
| 5702 | { | |
| 5703 | register unsigned size; | |
| 5704 | ||
| 5705 | switch (TREE_CODE (tree_node)) | |
| 5706 | { | |
| 5707 | case ERROR_MARK: | |
| 5708 | size = 0; | |
| 5709 | break; | |
| 5710 | case ENUMERAL_TYPE: | |
| 5711 | case RECORD_TYPE: | |
| 5712 | case UNION_TYPE: | |
| 5713 | case QUAL_UNION_TYPE: | |
| 5714 | size = int_size_in_bytes (tree_node); | |
| 5715 | break; | |
| 5716 | case FIELD_DECL: | |
| 5717 | /* For a data member of a struct or union, the DW_AT_byte_size is | |
| 5718 | generally given as the number of bytes normally allocated for an | |
| 5719 | object of the *declared* type of the member itself. This is true | |
| 5720 | even for bit-fields. */ | |
| 5721 | size = simple_type_size_in_bits (field_type (tree_node)) / BITS_PER_UNIT; | |
| 5722 | break; | |
| 5723 | default: | |
| 5724 | abort (); | |
| 5725 | } | |
| 5726 | ||
| 5727 | /* Note that `size' might be -1 when we get to this point. If it is, that | |
| 5728 | indicates that the byte size of the entity in question is variable. We | |
| 5729 | have no good way of expressing this fact in Dwarf at the present time, | |
| 5730 | so just let the -1 pass on through. */ | |
| 5731 | ||
| 5732 | add_AT_unsigned (die, DW_AT_byte_size, size); | |
| 5733 | } | |
| 5734 | ||
| 5735 | /* For a FIELD_DECL node which represents a bit-field, output an attribute | |
| 5736 | which specifies the distance in bits from the highest order bit of the | |
| 5737 | "containing object" for the bit-field to the highest order bit of the | |
| 5738 | bit-field itself. | |
| 5739 | ||
| 5740 | For any given bit-field, the "containing object" is a hypothetical object (of | |
| 5741 | some integral or enum type) within which the given bit-field lives. The | |
| 5742 | type of this hypothetical "containing object" is always the same as the | |
| 5743 | declared type of the individual bit-field itself. | |
| 5744 | The determination of the exact location of the "containing object" for a | |
| 5745 | bit-field is rather complicated. It's handled by the `field_byte_offset' | |
| 5746 | function (above). | |
| 5747 | ||
| 5748 | Note that it is the size (in bytes) of the hypothetical "containing object" | |
| 5749 | which will be given in the DW_AT_byte_size attribute for this bit-field. | |
| 5750 | (See `byte_size_attribute' above). */ | |
| 5751 | inline void | |
| 5752 | add_bit_offset_attribute (die, decl) | |
| 5753 | register dw_die_ref die; | |
| 5754 | register tree decl; | |
| 5755 | { | |
| 5756 | register unsigned object_offset_in_bytes = field_byte_offset (decl); | |
| 5757 | register tree type = DECL_BIT_FIELD_TYPE (decl); | |
| 5758 | register tree bitpos_tree = DECL_FIELD_BITPOS (decl); | |
| 5759 | register unsigned bitpos_int; | |
| 5760 | register unsigned highest_order_object_bit_offset; | |
| 5761 | register unsigned highest_order_field_bit_offset; | |
| 5762 | register unsigned bit_offset; | |
| 5763 | ||
| 5764 | assert (TREE_CODE (decl) == FIELD_DECL); /* Must be a field. */ | |
| 5765 | assert (type); /* Must be a bit field. */ | |
| 5766 | ||
| 5767 | /* We can't yet handle bit-fields whose offsets are variable, so if we | |
| 5768 | encounter such things, just return without generating any attribute | |
| 5769 | whatsoever. */ | |
| 5770 | if (TREE_CODE (bitpos_tree) != INTEGER_CST) | |
| 5771 | { | |
| 5772 | return; | |
| 5773 | } | |
| 5774 | bitpos_int = (unsigned) TREE_INT_CST_LOW (bitpos_tree); | |
| 5775 | ||
| 5776 | /* Note that the bit offset is always the distance (in bits) from the | |
| 5777 | highest-order bit of the "containing object" to the highest-order bit of | |
| 5778 | the bit-field itself. Since the "high-order end" of any object or field | |
| 5779 | is different on big-endian and little-endian machines, the computation | |
| 5780 | below must take account of these differences. */ | |
| 5781 | highest_order_object_bit_offset = object_offset_in_bytes * BITS_PER_UNIT; | |
| 5782 | highest_order_field_bit_offset = bitpos_int; | |
| 5783 | ||
| 5784 | if (!BYTES_BIG_ENDIAN) | |
| 5785 | { | |
| 5786 | highest_order_field_bit_offset | |
| 5787 | += (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl)); | |
| 5788 | ||
| 5789 | highest_order_object_bit_offset += simple_type_size_in_bits (type); | |
| 5790 | } | |
| 5791 | bit_offset = | |
| 5792 | (!BYTES_BIG_ENDIAN | |
| 5793 | ? highest_order_object_bit_offset - highest_order_field_bit_offset | |
| 5794 | : highest_order_field_bit_offset - highest_order_object_bit_offset); | |
| 5795 | ||
| 5796 | add_AT_unsigned (die, DW_AT_bit_offset, bit_offset); | |
| 5797 | } | |
| 5798 | ||
| 5799 | /* For a FIELD_DECL node which represents a bit field, output an attribute | |
| 5800 | which specifies the length in bits of the given field. */ | |
| 5801 | inline void | |
| 5802 | add_bit_size_attribute (die, decl) | |
| 5803 | register dw_die_ref die; | |
| 5804 | register tree decl; | |
| 5805 | { | |
| 5806 | assert (TREE_CODE (decl) == FIELD_DECL); /* Must be a field. */ | |
| 5807 | assert (DECL_BIT_FIELD_TYPE (decl)); /* Must be a bit field. */ | |
| 5808 | add_AT_unsigned (die, DW_AT_bit_size, | |
| 5809 | (unsigned) TREE_INT_CST_LOW (DECL_SIZE (decl))); | |
| 5810 | } | |
| 5811 | ||
| a3f97cbb JW |
5812 | /* If the compiled language is GNU C, then add a 'prototyped' |
| 5813 | attribute, if arg types are given for the parameters of a function. */ | |
| 5814 | inline void | |
| 5815 | add_prototyped_attribute (die, func_type) | |
| 5816 | register dw_die_ref die; | |
| 5817 | register tree func_type; | |
| 5818 | { | |
| 5819 | if ((strcmp (language_string, "GNU C") == 0) | |
| 5820 | && (TYPE_ARG_TYPES (func_type) != NULL)) | |
| 5821 | { | |
| 5822 | add_AT_flag (die, DW_AT_prototyped, 0); | |
| 5823 | } | |
| 5824 | } | |
| 5825 | ||
| 5826 | ||
| 5827 | /* Add an 'abstract_origin' attribute below a given DIE. The DIE is found | |
| 5828 | by looking in either the type declaration or object declaration | |
| 5829 | equate table. */ | |
| 5830 | inline void | |
| 5831 | add_abstract_origin_attribute (die, origin) | |
| 5832 | register dw_die_ref die; | |
| 5833 | register tree origin; | |
| 5834 | { | |
| 5835 | dw_die_ref origin_die = NULL; | |
| 5836 | if (TREE_CODE_CLASS (TREE_CODE (origin)) == 'd') | |
| 5837 | { | |
| 5838 | origin_die = lookup_decl_die (origin); | |
| 5839 | } | |
| 5840 | else if (TREE_CODE_CLASS (TREE_CODE (origin)) == 't') | |
| 5841 | { | |
| 5842 | origin_die = lookup_type_die (origin); | |
| 5843 | } | |
| 5844 | add_AT_die_ref (die, DW_AT_abstract_origin, origin_die); | |
| 5845 | } | |
| 5846 | ||
| bdb669cb JM |
5847 | /* We do not currently support the pure_virtual attribute. */ |
| 5848 | ||
| a3f97cbb JW |
5849 | inline void |
| 5850 | add_pure_or_virtual_attribute (die, func_decl) | |
| 5851 | register dw_die_ref die; | |
| 5852 | register tree func_decl; | |
| 5853 | { | |
| 5854 | if (DECL_VIRTUAL_P (func_decl)) | |
| 5855 | { | |
| bdb669cb | 5856 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); |
| 61b32c02 JM |
5857 | add_AT_loc (die, DW_AT_vtable_elem_location, new_loc_descr |
| 5858 | (DW_OP_constu, TREE_INT_CST_LOW (DECL_VINDEX (func_decl)))); | |
| a3f97cbb JW |
5859 | } |
| 5860 | } | |
| 5861 | \f | |
| 5862 | /********************* utility routines for DIEs *************************/ | |
| 5863 | ||
| 5864 | /* Add an DW_AT_name attribute and source coordinate attribute for the | |
| 5865 | given decl, but only if it actually has a name. */ | |
| 5866 | static void | |
| 5867 | add_name_and_src_coords_attributes (die, decl) | |
| 5868 | register dw_die_ref die; | |
| 5869 | register tree decl; | |
| 5870 | { | |
| 61b32c02 | 5871 | register tree decl_name; |
| a3f97cbb | 5872 | register unsigned file_index; |
| 273dbe67 | 5873 | if (TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL) |
| 61b32c02 JM |
5874 | decl_name = DECL_ASSEMBLER_NAME (decl); |
| 5875 | else | |
| 5876 | decl_name = DECL_NAME (decl); | |
| 5877 | ||
| a3f97cbb JW |
5878 | if (decl_name && IDENTIFIER_POINTER (decl_name)) |
| 5879 | { | |
| 5880 | add_name_attribute (die, IDENTIFIER_POINTER (decl_name)); | |
| 5881 | file_index = lookup_filename (DECL_SOURCE_FILE (decl)); | |
| 5882 | add_AT_unsigned (die, DW_AT_decl_file, file_index); | |
| 5883 | add_AT_unsigned (die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
| 5884 | } | |
| 5885 | } | |
| 5886 | ||
| 5887 | /* Push a new declaration scope. */ | |
| 5888 | static void | |
| 5889 | push_decl_scope (scope) | |
| 5890 | tree scope; | |
| 5891 | { | |
| 5892 | /* Make room in the decl_scope_table, if necessary. */ | |
| 5893 | if (decl_scope_table_allocated == decl_scope_depth) | |
| 5894 | { | |
| 5895 | decl_scope_table_allocated += DECL_SCOPE_TABLE_INCREMENT; | |
| 5896 | decl_scope_table = (tree *) xrealloc (decl_scope_table, | |
| 5897 | decl_scope_table_allocated * sizeof (tree)); | |
| 5898 | } | |
| 5899 | decl_scope_table[decl_scope_depth++] = scope; | |
| 5900 | } | |
| 5901 | ||
| 5902 | /* Return the DIE for the scope the immediately contains this declaration. */ | |
| 5903 | static dw_die_ref | |
| ab72d377 JM |
5904 | scope_die_for (t, context_die) |
| 5905 | register tree t; | |
| a3f97cbb JW |
5906 | register dw_die_ref context_die; |
| 5907 | { | |
| 5908 | register dw_die_ref scope_die = NULL; | |
| 5909 | register tree containing_scope; | |
| 5910 | register unsigned long i; | |
| 5911 | ||
| 5912 | /* Walk back up the declaration tree looking for a place to define | |
| 5913 | this type. */ | |
| ab72d377 JM |
5914 | if (TREE_CODE_CLASS (TREE_CODE (t)) == 't') |
| 5915 | containing_scope = TYPE_CONTEXT (t); | |
| 5916 | else if (TREE_CODE (t) == FUNCTION_DECL && DECL_VIRTUAL_P (t)) | |
| 5917 | containing_scope = decl_class_context (t); | |
| 5918 | else | |
| 5919 | containing_scope = DECL_CONTEXT (t); | |
| 5920 | ||
| a3f97cbb JW |
5921 | if (containing_scope == NULL) |
| 5922 | { | |
| 5923 | scope_die = comp_unit_die; | |
| 5924 | } | |
| 5925 | else | |
| 5926 | { | |
| ab72d377 JM |
5927 | for (i = decl_scope_depth, scope_die = context_die; |
| 5928 | i > 0 && decl_scope_table[i - 1] != containing_scope; | |
| 7d4440be JM |
5929 | scope_die = scope_die->die_parent, --i) |
| 5930 | /* nothing */ ; | |
| ab72d377 | 5931 | if (i == 0) |
| a3f97cbb | 5932 | { |
| ab72d377 JM |
5933 | assert (scope_die == comp_unit_die); |
| 5934 | assert (TREE_CODE_CLASS (TREE_CODE (containing_scope)) == 't'); | |
| 4927276d JM |
5935 | if (debug_info_level > DINFO_LEVEL_TERSE) |
| 5936 | assert (TREE_ASM_WRITTEN (containing_scope)); | |
| a3f97cbb JW |
5937 | } |
| 5938 | } | |
| 5939 | return scope_die; | |
| 5940 | } | |
| 5941 | ||
| 5942 | /* Pop a declaration scope. */ | |
| 5943 | inline void | |
| 5944 | pop_decl_scope () | |
| 5945 | { | |
| 5946 | assert (decl_scope_depth > 0); | |
| 5947 | --decl_scope_depth; | |
| 5948 | } | |
| 5949 | ||
| 5950 | /* Many forms of DIEs require a "type description" attribute. This | |
| 5951 | routine locates the proper "type descriptor" die for the type given | |
| 5952 | by 'type', and adds an DW_AT_type attribute below the given die. */ | |
| 5953 | static void | |
| 5954 | add_type_attribute (object_die, type, decl_const, decl_volatile, context_die) | |
| 5955 | register dw_die_ref object_die; | |
| 5956 | register tree type; | |
| 5957 | register int decl_const; | |
| 5958 | register int decl_volatile; | |
| 5959 | register dw_die_ref context_die; | |
| 5960 | { | |
| 5961 | register enum tree_code code = TREE_CODE (type); | |
| a3f97cbb JW |
5962 | register dw_die_ref type_die = NULL; |
| 5963 | ||
| 5964 | if (code == ERROR_MARK) | |
| 5965 | { | |
| 5966 | return; | |
| 5967 | } | |
| 5968 | ||
| 5969 | /* Handle a special case. For functions whose return type is void, we | |
| 5970 | generate *no* type attribute. (Note that no object may have type | |
| 5971 | `void', so this only applies to function return types). */ | |
| 5972 | if (code == VOID_TYPE) | |
| 5973 | { | |
| 5974 | return; | |
| 5975 | } | |
| 5976 | ||
| a3f97cbb JW |
5977 | type_die = modified_type_die (type, |
| 5978 | decl_const || TYPE_READONLY (type), | |
| 5979 | decl_volatile || TYPE_VOLATILE (type), | |
| ab72d377 | 5980 | context_die); |
| a3f97cbb JW |
5981 | if (type_die != NULL) |
| 5982 | { | |
| 5983 | add_AT_die_ref (object_die, DW_AT_type, type_die); | |
| 5984 | } | |
| 5985 | } | |
| 5986 | ||
| 5987 | /* Given a tree pointer to a struct, class, union, or enum type node, return | |
| 5988 | a pointer to the (string) tag name for the given type, or zero if the type | |
| 5989 | was declared without a tag. */ | |
| 5990 | static char * | |
| 5991 | type_tag (type) | |
| 5992 | register tree type; | |
| 5993 | { | |
| 5994 | register char *name = 0; | |
| 5995 | ||
| 5996 | if (TYPE_NAME (type) != 0) | |
| 5997 | { | |
| 5998 | register tree t = 0; | |
| 5999 | ||
| 6000 | /* Find the IDENTIFIER_NODE for the type name. */ | |
| 6001 | if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) | |
| 6002 | t = TYPE_NAME (type); | |
| bdb669cb | 6003 | |
| a3f97cbb JW |
6004 | /* The g++ front end makes the TYPE_NAME of *each* tagged type point to |
| 6005 | a TYPE_DECL node, regardless of whether or not a `typedef' was | |
| bdb669cb | 6006 | involved. */ |
| a3f97cbb JW |
6007 | else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL) |
| 6008 | t = DECL_NAME (TYPE_NAME (type)); | |
| bdb669cb | 6009 | |
| a3f97cbb JW |
6010 | /* Now get the name as a string, or invent one. */ |
| 6011 | if (t != 0) | |
| 6012 | { | |
| 6013 | name = IDENTIFIER_POINTER (t); | |
| 6014 | } | |
| 6015 | } | |
| 6016 | return (name == 0 || *name == '\0') ? 0 : name; | |
| 6017 | } | |
| 6018 | ||
| 6019 | /* Return the type associated with a data member, make a special check | |
| 6020 | for bit field types. */ | |
| 6021 | inline tree | |
| 6022 | member_declared_type (member) | |
| 6023 | register tree member; | |
| 6024 | { | |
| 6025 | return (DECL_BIT_FIELD_TYPE (member)) | |
| 6026 | ? DECL_BIT_FIELD_TYPE (member) | |
| 6027 | : TREE_TYPE (member); | |
| 6028 | } | |
| 6029 | ||
| d291dd49 | 6030 | /* Get the decl's label, as described by its RTL. This may be different |
| a3f97cbb JW |
6031 | from the DECL_NAME name used in the source file. */ |
| 6032 | static char * | |
| d291dd49 | 6033 | decl_start_label (decl) |
| a3f97cbb JW |
6034 | register tree decl; |
| 6035 | { | |
| 6036 | rtx x; | |
| 6037 | char *fnname; | |
| 6038 | x = DECL_RTL (decl); | |
| 6039 | if (GET_CODE (x) != MEM) | |
| 6040 | { | |
| 6041 | abort (); | |
| 6042 | } | |
| 6043 | x = XEXP (x, 0); | |
| 6044 | if (GET_CODE (x) != SYMBOL_REF) | |
| 6045 | { | |
| 6046 | abort (); | |
| 6047 | } | |
| 6048 | fnname = XSTR (x, 0); | |
| 6049 | return fnname; | |
| 6050 | } | |
| 6051 | \f | |
| 6052 | /******************************* DIE Generation *************************/ | |
| 6053 | ||
| 6054 | /* These routines generate the internnal representation of the DIE's for | |
| 6055 | the compilation unit. Debugging information is collected by walking | |
| 9a666dda | 6056 | the declaration trees passed in from dwarf2out_file_scope_decl(). */ |
| a3f97cbb JW |
6057 | |
| 6058 | static void | |
| 6059 | gen_array_type_die (type, context_die) | |
| 6060 | register tree type; | |
| 6061 | register dw_die_ref context_die; | |
| 6062 | { | |
| ab72d377 | 6063 | register dw_die_ref scope_die = scope_die_for (type, context_die); |
| a9d38797 | 6064 | register dw_die_ref array_die; |
| a3f97cbb | 6065 | register tree element_type; |
| bdb669cb | 6066 | |
| a9d38797 JM |
6067 | /* ??? The SGI dwarf reader fails for array of array of enum types unless |
| 6068 | the inner array type comes before the outer array type. Thus we must | |
| 6069 | call gen_type_die before we call new_die. See below also. */ | |
| 6070 | #ifdef MIPS_DEBUGGING_INFO | |
| 6071 | gen_type_die (TREE_TYPE (type), context_die); | |
| 6072 | #endif | |
| 6073 | ||
| 6074 | array_die = new_die (DW_TAG_array_type, scope_die); | |
| 6075 | ||
| a3f97cbb JW |
6076 | #if 0 |
| 6077 | /* We default the array ordering. SDB will probably do | |
| 6078 | the right things even if DW_AT_ordering is not present. It's not even | |
| 6079 | an issue until we start to get into multidimensional arrays anyway. If | |
| 6080 | SDB is ever caught doing the Wrong Thing for multi-dimensional arrays, | |
| 6081 | then we'll have to put the DW_AT_ordering attribute back in. (But if | |
| 6082 | and when we find out that we need to put these in, we will only do so | |
| 6083 | for multidimensional arrays. */ | |
| 6084 | add_AT_unsigned (array_die, DW_AT_ordering, DW_ORD_row_major); | |
| 6085 | #endif | |
| 6086 | ||
| a9d38797 JM |
6087 | #ifdef MIPS_DEBUGGING_INFO |
| 6088 | if (! TYPE_DOMAIN (type)) | |
| 6089 | add_AT_unsigned (array_die, DW_AT_declaration, 1); | |
| 6090 | else | |
| 6091 | #endif | |
| 6092 | add_subscript_info (array_die, type); | |
| a3f97cbb JW |
6093 | |
| 6094 | equate_type_number_to_die (type, array_die); | |
| 6095 | ||
| 6096 | /* Add representation of the type of the elements of this array type. */ | |
| 6097 | element_type = TREE_TYPE (type); | |
| 6098 | /* ??? The SGI dwarf reader fails for multidimensional arrays with a | |
| 6099 | const enum type. E.g. const enum machine_mode insn_operand_mode[2][10]. | |
| 6100 | We work around this by disabling this feature. See also | |
| 6101 | add_subscript_info. */ | |
| 6102 | #ifndef MIPS_DEBUGGING_INFO | |
| 6103 | while (TREE_CODE (element_type) == ARRAY_TYPE) | |
| 6104 | { | |
| 6105 | element_type = TREE_TYPE (element_type); | |
| 6106 | } | |
| a3f97cbb | 6107 | gen_type_die (element_type, context_die); |
| a9d38797 | 6108 | #endif |
| a3f97cbb JW |
6109 | |
| 6110 | add_type_attribute (array_die, element_type, 0, 0, context_die); | |
| 6111 | } | |
| 6112 | ||
| 6113 | static void | |
| 6114 | gen_set_type_die (type, context_die) | |
| 6115 | register tree type; | |
| 6116 | register dw_die_ref context_die; | |
| 6117 | { | |
| ab72d377 JM |
6118 | register dw_die_ref type_die = new_die |
| 6119 | (DW_TAG_set_type, scope_die_for (type, context_die)); | |
| a3f97cbb | 6120 | equate_type_number_to_die (type, type_die); |
| a3f97cbb JW |
6121 | add_type_attribute (type_die, TREE_TYPE (type), 0, 0, context_die); |
| 6122 | } | |
| 6123 | ||
| 6124 | static void | |
| 6125 | gen_entry_point_die (decl, context_die) | |
| 6126 | register tree decl; | |
| 6127 | register dw_die_ref context_die; | |
| 6128 | { | |
| 6129 | register tree origin = decl_ultimate_origin (decl); | |
| 6130 | register dw_die_ref decl_die = new_die (DW_TAG_entry_point, context_die); | |
| 6131 | if (origin != NULL) | |
| 6132 | { | |
| 6133 | add_abstract_origin_attribute (decl_die, origin); | |
| 6134 | } | |
| 6135 | else | |
| 6136 | { | |
| 6137 | add_name_and_src_coords_attributes (decl_die, decl); | |
| a3f97cbb JW |
6138 | add_type_attribute (decl_die, TREE_TYPE (TREE_TYPE (decl)), |
| 6139 | 0, 0, context_die); | |
| 6140 | } | |
| 6141 | if (DECL_ABSTRACT (decl)) | |
| 6142 | { | |
| 6143 | equate_decl_number_to_die (decl, decl_die); | |
| 6144 | } | |
| 6145 | else | |
| 6146 | { | |
| d291dd49 | 6147 | add_AT_lbl_id (decl_die, DW_AT_low_pc, decl_start_label (decl)); |
| a3f97cbb JW |
6148 | } |
| 6149 | } | |
| 6150 | ||
| 6151 | /* Generate a DIE to represent an inlined instance of an enumeration type. */ | |
| 6152 | static void | |
| 6153 | gen_inlined_enumeration_type_die (type, context_die) | |
| 6154 | register tree type; | |
| 6155 | register dw_die_ref context_die; | |
| 6156 | { | |
| 6157 | register dw_die_ref type_die; | |
| 6158 | type_die = new_die (DW_TAG_enumeration_type, | |
| ab72d377 | 6159 | scope_die_for (type, context_die)); |
| a3f97cbb JW |
6160 | assert (TREE_ASM_WRITTEN (type)); |
| 6161 | add_abstract_origin_attribute (type_die, type); | |
| 6162 | } | |
| 6163 | ||
| 6164 | /* Generate a DIE to represent an inlined instance of a structure type. */ | |
| 6165 | static void | |
| 6166 | gen_inlined_structure_type_die (type, context_die) | |
| 6167 | register tree type; | |
| 6168 | register dw_die_ref context_die; | |
| 6169 | { | |
| 6170 | register dw_die_ref type_die; | |
| 6171 | type_die = new_die (DW_TAG_structure_type, | |
| ab72d377 | 6172 | scope_die_for (type, context_die)); |
| a3f97cbb JW |
6173 | assert (TREE_ASM_WRITTEN (type)); |
| 6174 | add_abstract_origin_attribute (type_die, type); | |
| 6175 | } | |
| 6176 | ||
| 6177 | /* Generate a DIE to represent an inlined instance of a union type. */ | |
| 6178 | static void | |
| 6179 | gen_inlined_union_type_die (type, context_die) | |
| 6180 | register tree type; | |
| 6181 | register dw_die_ref context_die; | |
| 6182 | { | |
| 6183 | register dw_die_ref type_die; | |
| 6184 | type_die = new_die (DW_TAG_union_type, | |
| ab72d377 | 6185 | scope_die_for (type, context_die)); |
| a3f97cbb JW |
6186 | assert (TREE_ASM_WRITTEN (type)); |
| 6187 | add_abstract_origin_attribute (type_die, type); | |
| 6188 | } | |
| 6189 | ||
| 6190 | /* Generate a DIE to represent an enumeration type. Note that these DIEs | |
| 6191 | include all of the information about the enumeration values also. Each | |
| 273dbe67 JM |
6192 | enumerated type name/value is listed as a child of the enumerated type |
| 6193 | DIE. */ | |
| a3f97cbb | 6194 | static void |
| 273dbe67 | 6195 | gen_enumeration_type_die (type, context_die) |
| a3f97cbb | 6196 | register tree type; |
| a3f97cbb JW |
6197 | register dw_die_ref context_die; |
| 6198 | { | |
| 273dbe67 JM |
6199 | register dw_die_ref type_die = lookup_type_die (type); |
| 6200 | ||
| a3f97cbb JW |
6201 | if (type_die == NULL) |
| 6202 | { | |
| 6203 | type_die = new_die (DW_TAG_enumeration_type, | |
| ab72d377 | 6204 | scope_die_for (type, context_die)); |
| a3f97cbb JW |
6205 | equate_type_number_to_die (type, type_die); |
| 6206 | add_name_attribute (type_die, type_tag (type)); | |
| a3f97cbb | 6207 | } |
| 273dbe67 JM |
6208 | else if (! TYPE_SIZE (type)) |
| 6209 | return; | |
| 6210 | else | |
| 6211 | remove_AT (type_die, DW_AT_declaration); | |
| 6212 | ||
| 6213 | /* Handle a GNU C/C++ extension, i.e. incomplete enum types. If the | |
| 6214 | given enum type is incomplete, do not generate the DW_AT_byte_size | |
| 6215 | attribute or the DW_AT_element_list attribute. */ | |
| 6216 | if (TYPE_SIZE (type)) | |
| a3f97cbb | 6217 | { |
| 273dbe67 | 6218 | register tree link; |
| a082c85a | 6219 | TREE_ASM_WRITTEN (type) = 1; |
| 273dbe67 JM |
6220 | add_byte_size_attribute (type_die, type); |
| 6221 | for (link = TYPE_FIELDS (type); | |
| 6222 | link != NULL; link = TREE_CHAIN (link)) | |
| a3f97cbb | 6223 | { |
| 273dbe67 JM |
6224 | register dw_die_ref enum_die = new_die (DW_TAG_enumerator, type_die); |
| 6225 | add_name_attribute (enum_die, | |
| 6226 | IDENTIFIER_POINTER (TREE_PURPOSE (link))); | |
| 6227 | add_AT_unsigned (enum_die, DW_AT_const_value, | |
| a3f97cbb | 6228 | (unsigned) TREE_INT_CST_LOW (TREE_VALUE (link))); |
| a3f97cbb JW |
6229 | } |
| 6230 | } | |
| 273dbe67 JM |
6231 | else |
| 6232 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
| a3f97cbb JW |
6233 | } |
| 6234 | ||
| 6235 | ||
| 6236 | /* Generate a DIE to represent either a real live formal parameter decl or to | |
| 6237 | represent just the type of some formal parameter position in some function | |
| 6238 | type. | |
| 6239 | Note that this routine is a bit unusual because its argument may be a | |
| 6240 | ..._DECL node (i.e. either a PARM_DECL or perhaps a VAR_DECL which | |
| 6241 | represents an inlining of some PARM_DECL) or else some sort of a ..._TYPE | |
| 6242 | node. If it's the former then this function is being called to output a | |
| 6243 | DIE to represent a formal parameter object (or some inlining thereof). If | |
| 6244 | it's the latter, then this function is only being called to output a | |
| 6245 | DW_TAG_formal_parameter DIE to stand as a placeholder for some formal | |
| 6246 | argument type of some subprogram type. */ | |
| 6247 | static void | |
| 6248 | gen_formal_parameter_die (node, context_die) | |
| 6249 | register tree node; | |
| 6250 | register dw_die_ref context_die; | |
| 6251 | { | |
| 6252 | register dw_die_ref parm_die = new_die (DW_TAG_formal_parameter, | |
| 6253 | context_die); | |
| 6254 | register tree origin; | |
| 6255 | switch (TREE_CODE_CLASS (TREE_CODE (node))) | |
| 6256 | { | |
| 6257 | /* We were called with some kind of a ..._DECL node. */ | |
| 6258 | case 'd': | |
| 6259 | origin = decl_ultimate_origin (node); | |
| 6260 | if (origin != NULL) | |
| 6261 | { | |
| 6262 | add_abstract_origin_attribute (parm_die, origin); | |
| 6263 | } | |
| 6264 | else | |
| 6265 | { | |
| 6266 | add_name_and_src_coords_attributes (parm_die, node); | |
| 6267 | add_type_attribute (parm_die, TREE_TYPE (node), | |
| 6268 | TREE_READONLY (node), | |
| 6269 | TREE_THIS_VOLATILE (node), | |
| 6270 | context_die); | |
| bdb669cb JM |
6271 | if (DECL_ARTIFICIAL (node)) |
| 6272 | add_AT_flag (parm_die, DW_AT_artificial, 1); | |
| a3f97cbb JW |
6273 | } |
| 6274 | if (DECL_ABSTRACT (node)) | |
| 6275 | { | |
| 6276 | equate_decl_number_to_die (node, parm_die); | |
| 6277 | } | |
| 6278 | else | |
| 6279 | { | |
| 6280 | add_location_or_const_value_attribute (parm_die, node); | |
| 6281 | } | |
| 6282 | break; | |
| 6283 | ||
| 6284 | /* We were called with some kind of a ..._TYPE node. */ | |
| 6285 | case 't': | |
| 6286 | add_type_attribute (parm_die, node, 0, 0, context_die); | |
| 6287 | break; | |
| 6288 | ||
| 6289 | /* Should never happen. */ | |
| 6290 | default: | |
| 6291 | abort (); | |
| 6292 | } | |
| 6293 | } | |
| 6294 | ||
| 6295 | /* Generate a special type of DIE used as a stand-in for a trailing ellipsis | |
| 6296 | at the end of an (ANSI prototyped) formal parameters list. */ | |
| 6297 | static void | |
| 6298 | gen_unspecified_parameters_die (decl_or_type, context_die) | |
| 6299 | register tree decl_or_type; | |
| 6300 | register dw_die_ref context_die; | |
| 6301 | { | |
| 6302 | register dw_die_ref parm_die = new_die (DW_TAG_unspecified_parameters, | |
| 6303 | context_die); | |
| a3f97cbb JW |
6304 | } |
| 6305 | ||
| 6306 | /* Generate a list of nameless DW_TAG_formal_parameter DIEs (and perhaps a | |
| 6307 | DW_TAG_unspecified_parameters DIE) to represent the types of the formal | |
| 6308 | parameters as specified in some function type specification (except for | |
| 6309 | those which appear as part of a function *definition*). | |
| 6310 | Note that we must be careful here to output all of the parameter DIEs before* | |
| 6311 | we output any DIEs needed to represent the types of the formal parameters. | |
| 6312 | This keeps svr4 SDB happy because it (incorrectly) thinks that the first | |
| 6313 | non-parameter DIE it sees ends the formal parameter list. */ | |
| 6314 | static void | |
| 6315 | gen_formal_types_die (function_or_method_type, context_die) | |
| 6316 | register tree function_or_method_type; | |
| 6317 | register dw_die_ref context_die; | |
| 6318 | { | |
| 6319 | register tree link; | |
| 6320 | register tree formal_type = NULL; | |
| 6321 | register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type); | |
| 6322 | ||
| bdb669cb | 6323 | #if 0 |
| a3f97cbb JW |
6324 | /* In the case where we are generating a formal types list for a C++ |
| 6325 | non-static member function type, skip over the first thing on the | |
| 6326 | TYPE_ARG_TYPES list because it only represents the type of the hidden | |
| 6327 | `this pointer'. The debugger should be able to figure out (without | |
| 6328 | being explicitly told) that this non-static member function type takes a | |
| 6329 | `this pointer' and should be able to figure what the type of that hidden | |
| 6330 | parameter is from the DW_AT_member attribute of the parent | |
| 6331 | DW_TAG_subroutine_type DIE. */ | |
| 6332 | if (TREE_CODE (function_or_method_type) == METHOD_TYPE) | |
| 6333 | first_parm_type = TREE_CHAIN (first_parm_type); | |
| bdb669cb | 6334 | #endif |
| a3f97cbb JW |
6335 | |
| 6336 | /* Make our first pass over the list of formal parameter types and output a | |
| 6337 | DW_TAG_formal_parameter DIE for each one. */ | |
| 6338 | for (link = first_parm_type; link; link = TREE_CHAIN (link)) | |
| 6339 | { | |
| 6340 | formal_type = TREE_VALUE (link); | |
| 6341 | if (formal_type == void_type_node) | |
| 6342 | break; | |
| 6343 | ||
| 6344 | /* Output a (nameless) DIE to represent the formal parameter itself. */ | |
| 6345 | gen_formal_parameter_die (formal_type, context_die); | |
| 6346 | } | |
| 6347 | ||
| 6348 | /* If this function type has an ellipsis, add a | |
| 6349 | DW_TAG_unspecified_parameters DIE to the end of the parameter list. */ | |
| 6350 | if (formal_type != void_type_node) | |
| 6351 | gen_unspecified_parameters_die (function_or_method_type, context_die); | |
| 6352 | ||
| 6353 | /* Make our second (and final) pass over the list of formal parameter types | |
| 6354 | and output DIEs to represent those types (as necessary). */ | |
| 6355 | for (link = TYPE_ARG_TYPES (function_or_method_type); | |
| 6356 | link; | |
| 6357 | link = TREE_CHAIN (link)) | |
| 6358 | { | |
| 6359 | formal_type = TREE_VALUE (link); | |
| 6360 | if (formal_type == void_type_node) | |
| 6361 | break; | |
| 6362 | ||
| b50c02f9 | 6363 | gen_type_die (formal_type, context_die); |
| a3f97cbb JW |
6364 | } |
| 6365 | } | |
| 6366 | ||
| 6367 | /* Generate a DIE to represent a declared function (either file-scope or | |
| 6368 | block-local). */ | |
| 6369 | static void | |
| 6370 | gen_subprogram_die (decl, context_die) | |
| 6371 | register tree decl; | |
| 6372 | register dw_die_ref context_die; | |
| 6373 | { | |
| 6374 | char label_id[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 6375 | register tree origin = decl_ultimate_origin (decl); | |
| 4b674448 | 6376 | register dw_die_ref subr_die; |
| a3f97cbb JW |
6377 | register dw_loc_descr_ref fp_loc = NULL; |
| 6378 | register unsigned fp_reg; | |
| a3f97cbb JW |
6379 | register tree fn_arg_types; |
| 6380 | register tree outer_scope; | |
| bdb669cb | 6381 | dw_die_ref old_die = lookup_decl_die (decl); |
| a3f97cbb | 6382 | |
| a3f97cbb JW |
6383 | if (origin != NULL) |
| 6384 | { | |
| 4b674448 | 6385 | subr_die = new_die (DW_TAG_subprogram, context_die); |
| a3f97cbb JW |
6386 | add_abstract_origin_attribute (subr_die, origin); |
| 6387 | } | |
| bdb669cb JM |
6388 | else if (old_die) |
| 6389 | { | |
| 4b674448 JM |
6390 | register unsigned file_index |
| 6391 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
| bdb669cb JM |
6392 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) |
| 6393 | abort (); | |
| 4b674448 JM |
6394 | |
| 6395 | /* If the definition comes from the same place as the declaration, | |
| 6396 | use the old DIE. */ | |
| 6397 | if (get_AT_unsigned (old_die, DW_AT_decl_file) == file_index | |
| 6398 | && (get_AT_unsigned (old_die, DW_AT_decl_line) | |
| 6399 | == DECL_SOURCE_LINE (decl))) | |
| bdb669cb | 6400 | { |
| 4b674448 JM |
6401 | subr_die = old_die; |
| 6402 | ||
| 6403 | /* Clear out the declaration attribute and the parm types. */ | |
| 6404 | remove_AT (subr_die, DW_AT_declaration); | |
| 6405 | remove_children (subr_die); | |
| 6406 | } | |
| 6407 | else | |
| 6408 | { | |
| 6409 | subr_die = new_die (DW_TAG_subprogram, context_die); | |
| 6410 | add_AT_die_ref (subr_die, DW_AT_specification, old_die); | |
| bdb669cb JM |
6411 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) |
| 6412 | add_AT_unsigned (subr_die, DW_AT_decl_file, file_index); | |
| 6413 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
| 6414 | != DECL_SOURCE_LINE (decl)) | |
| 6415 | add_AT_unsigned | |
| 6416 | (subr_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
| 6417 | } | |
| 6418 | } | |
| a3f97cbb JW |
6419 | else |
| 6420 | { | |
| ab72d377 JM |
6421 | subr_die = new_die (DW_TAG_subprogram, |
| 6422 | scope_die_for (decl, context_die)); | |
| 273dbe67 JM |
6423 | if (TREE_PUBLIC (decl)) |
| 6424 | add_AT_flag (subr_die, DW_AT_external, 1); | |
| a3f97cbb | 6425 | add_name_and_src_coords_attributes (subr_die, decl); |
| 4927276d JM |
6426 | if (debug_info_level > DINFO_LEVEL_TERSE) |
| 6427 | { | |
| 6428 | register tree type = TREE_TYPE (decl); | |
| 6429 | add_prototyped_attribute (subr_die, type); | |
| 6430 | add_type_attribute (subr_die, TREE_TYPE (type), 0, 0, context_die); | |
| 6431 | } | |
| a3f97cbb | 6432 | add_pure_or_virtual_attribute (subr_die, decl); |
| 273dbe67 JM |
6433 | if (DECL_ARTIFICIAL (decl)) |
| 6434 | add_AT_flag (subr_die, DW_AT_artificial, 1); | |
| bdb669cb JM |
6435 | |
| 6436 | /* The first time we see a member function, it is in the context of | |
| 6437 | the class to which it belongs. We make sure of this by emitting | |
| 6438 | the class first. The next time is the definition, which is | |
| 6439 | handled above. The two may come from the same source text. */ | |
| 6440 | if (! DECL_INITIAL (decl)) | |
| 6441 | add_AT_flag (subr_die, DW_AT_declaration, 1); | |
| a3f97cbb | 6442 | } |
| 61b32c02 | 6443 | if (DECL_ABSTRACT (decl)) |
| a3f97cbb | 6444 | { |
| 61b32c02 JM |
6445 | if (DECL_DEFER_OUTPUT (decl)) |
| 6446 | { | |
| 6447 | if (DECL_INLINE (decl)) | |
| 6448 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_declared_inlined); | |
| 6449 | else | |
| 6450 | add_AT_unsigned (subr_die, DW_AT_inline, | |
| 6451 | DW_INL_declared_not_inlined); | |
| 6452 | } | |
| 6453 | else if (DECL_INLINE (decl)) | |
| 6454 | add_AT_unsigned (subr_die, DW_AT_inline, DW_INL_inlined); | |
| 6455 | else | |
| 6456 | abort (); | |
| 6457 | ||
| a3f97cbb JW |
6458 | equate_decl_number_to_die (decl, subr_die); |
| 6459 | } | |
| 61b32c02 JM |
6460 | else if (!DECL_INITIAL (decl)) |
| 6461 | equate_decl_number_to_die (decl, subr_die); | |
| a3f97cbb JW |
6462 | else if (!DECL_EXTERNAL (decl)) |
| 6463 | { | |
| ba7b35df JW |
6464 | if (origin == NULL) |
| 6465 | equate_decl_number_to_die (decl, subr_die); | |
| 5c90448c JM |
6466 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL, |
| 6467 | current_funcdef_number); | |
| 7d4440be | 6468 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label_id); |
| 5c90448c JM |
6469 | ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_END_LABEL, |
| 6470 | current_funcdef_number); | |
| a3f97cbb JW |
6471 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label_id); |
| 6472 | ||
| d291dd49 JM |
6473 | add_pubname (decl, subr_die); |
| 6474 | add_arange (decl, subr_die); | |
| 6475 | ||
| a3f97cbb | 6476 | #ifdef MIPS_DEBUGGING_INFO |
| a3f97cbb JW |
6477 | /* Add a reference to the FDE for this routine. */ |
| 6478 | add_AT_fde_ref (subr_die, DW_AT_MIPS_fde, current_funcdef_fde); | |
| 6479 | #endif | |
| 6480 | ||
| 810429b7 JM |
6481 | /* Define the "frame base" location for this routine. We use the |
| 6482 | frame pointer or stack pointer registers, since the RTL for local | |
| 6483 | variables is relative to one of them. */ | |
| 6484 | fp_reg = DBX_REGISTER_NUMBER (frame_pointer_needed | |
| 6485 | ? FRAME_POINTER_REGNUM | |
| 6486 | : STACK_POINTER_REGNUM); | |
| a3f97cbb | 6487 | assert (fp_reg >= 0 && fp_reg <= 31); |
| 810429b7 | 6488 | fp_loc = new_loc_descr (DW_OP_reg0 + fp_reg); |
| a3f97cbb JW |
6489 | add_AT_loc (subr_die, DW_AT_frame_base, fp_loc); |
| 6490 | ||
| 6491 | #ifdef DWARF_GNU_EXTENSIONS | |
| 5c90448c JM |
6492 | ASM_GENERATE_INTERNAL_LABEL (label_id, BODY_BEGIN_LABEL, |
| 6493 | current_funcdef_number); | |
| a3f97cbb | 6494 | add_AT_lbl_id (subr_die, DW_AT_body_begin, label_id); |
| 5c90448c JM |
6495 | ASM_GENERATE_INTERNAL_LABEL (label_id, BODY_END_LABEL, |
| 6496 | current_funcdef_number); | |
| a3f97cbb JW |
6497 | add_AT_lbl_id (subr_die, DW_AT_body_end, label_id); |
| 6498 | #endif | |
| 6499 | ||
| 6500 | } | |
| 6501 | ||
| 6502 | /* Now output descriptions of the arguments for this function. This gets | |
| 6503 | (unnecessarily?) complex because of the fact that the DECL_ARGUMENT list | |
| 6504 | for a FUNCTION_DECL doesn't indicate cases where there was a trailing | |
| 6505 | `...' at the end of the formal parameter list. In order to find out if | |
| 6506 | there was a trailing ellipsis or not, we must instead look at the type | |
| 6507 | associated with the FUNCTION_DECL. This will be a node of type | |
| 6508 | FUNCTION_TYPE. If the chain of type nodes hanging off of this | |
| 6509 | FUNCTION_TYPE node ends with a void_type_node then there should *not* be | |
| 6510 | an ellipsis at the end. */ | |
| 6511 | ||
| ab72d377 | 6512 | push_decl_scope (decl); |
| a3f97cbb JW |
6513 | /* In the case where we are describing a mere function declaration, all we |
| 6514 | need to do here (and all we *can* do here) is to describe the *types* of | |
| 6515 | its formal parameters. */ | |
| 4927276d JM |
6516 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
| 6517 | /* do nothing */; | |
| 6518 | else if (DECL_INITIAL (decl) == NULL_TREE) | |
| a3f97cbb JW |
6519 | { |
| 6520 | gen_formal_types_die (TREE_TYPE (decl), subr_die); | |
| 6521 | } | |
| 6522 | else | |
| 6523 | { | |
| 6524 | /* Generate DIEs to represent all known formal parameters */ | |
| 6525 | register tree arg_decls = DECL_ARGUMENTS (decl); | |
| 6526 | register tree parm; | |
| 6527 | ||
| 6528 | /* When generating DIEs, generate the unspecified_parameters DIE | |
| 6529 | instead if we come across the arg "__builtin_va_alist" */ | |
| 6530 | for (parm = arg_decls; parm; parm = TREE_CHAIN (parm)) | |
| 6531 | { | |
| 6532 | if (TREE_CODE (parm) == PARM_DECL) | |
| 6533 | { | |
| 6534 | if (DECL_NAME (parm) && | |
| 6535 | !strcmp (IDENTIFIER_POINTER (DECL_NAME (parm)), | |
| 6536 | "__builtin_va_alist")) | |
| 6537 | { | |
| 6538 | gen_unspecified_parameters_die (parm, subr_die); | |
| 6539 | } | |
| 6540 | else | |
| 6541 | { | |
| 6542 | gen_decl_die (parm, subr_die); | |
| 6543 | } | |
| 6544 | } | |
| 6545 | } | |
| 6546 | ||
| 6547 | /* Decide whether we need a unspecified_parameters DIE at the end. | |
| 6548 | There are 2 more cases to do this for: 1) the ansi ... declaration - | |
| 6549 | this is detectable when the end of the arg list is not a | |
| 6550 | void_type_node 2) an unprototyped function declaration (not a | |
| 6551 | definition). This just means that we have no info about the | |
| 6552 | parameters at all. */ | |
| 6553 | fn_arg_types = TYPE_ARG_TYPES (TREE_TYPE (decl)); | |
| 6554 | if (fn_arg_types) | |
| 6555 | { | |
| 6556 | /* this is the prototyped case, check for ... */ | |
| 6557 | if (TREE_VALUE (tree_last (fn_arg_types)) != void_type_node) | |
| 6558 | { | |
| 6559 | gen_unspecified_parameters_die (decl, subr_die); | |
| 6560 | } | |
| 6561 | } | |
| 6562 | else | |
| 6563 | { | |
| 6564 | /* this is unprotoyped, check for undefined (just declaration) */ | |
| 6565 | if (!DECL_INITIAL (decl)) | |
| 6566 | { | |
| 6567 | gen_unspecified_parameters_die (decl, subr_die); | |
| 6568 | } | |
| 6569 | } | |
| 6570 | } | |
| 6571 | ||
| 6572 | /* Output Dwarf info for all of the stuff within the body of the function | |
| 6573 | (if it has one - it may be just a declaration). */ | |
| 6574 | outer_scope = DECL_INITIAL (decl); | |
| 6575 | ||
| d7248bff JM |
6576 | /* Note that here, `outer_scope' is a pointer to the outermost BLOCK |
| 6577 | node created to represent a function. This outermost BLOCK actually | |
| 6578 | represents the outermost binding contour for the function, i.e. the | |
| 6579 | contour in which the function's formal parameters and labels get | |
| 6580 | declared. Curiously, it appears that the front end doesn't actually | |
| 6581 | put the PARM_DECL nodes for the current function onto the BLOCK_VARS | |
| 6582 | list for this outer scope. (They are strung off of the DECL_ARGUMENTS | |
| 6583 | list for the function instead.) The BLOCK_VARS list for the | |
| 6584 | `outer_scope' does provide us with a list of the LABEL_DECL nodes for | |
| 6585 | the function however, and we output DWARF info for those in | |
| 6586 | decls_for_scope. Just within the `outer_scope' there will be a BLOCK | |
| 6587 | node representing the function's outermost pair of curly braces, and | |
| 6588 | any blocks used for the base and member initializers of a C++ | |
| 6589 | constructor function. */ | |
| a3f97cbb | 6590 | if (outer_scope && TREE_CODE (outer_scope) != ERROR_MARK) |
| 7e23cb16 JM |
6591 | { |
| 6592 | current_function_has_inlines = 0; | |
| 6593 | decls_for_scope (outer_scope, subr_die, 0); | |
| ce61cc73 | 6594 | #if 0 && defined (MIPS_DEBUGGING_INFO) |
| 7e23cb16 JM |
6595 | if (current_function_has_inlines) |
| 6596 | { | |
| 6597 | add_AT_flag (subr_die, DW_AT_MIPS_has_inlines, 1); | |
| 6598 | if (! comp_unit_has_inlines) | |
| 6599 | { | |
| 6600 | add_AT_flag (comp_unit_die, DW_AT_MIPS_has_inlines, 1); | |
| 6601 | comp_unit_has_inlines = 1; | |
| 6602 | } | |
| 6603 | } | |
| 6604 | #endif | |
| 6605 | } | |
| ab72d377 | 6606 | pop_decl_scope (); |
| a3f97cbb JW |
6607 | } |
| 6608 | ||
| 6609 | /* Generate a DIE to represent a declared data object. */ | |
| 6610 | static void | |
| 6611 | gen_variable_die (decl, context_die) | |
| 6612 | register tree decl; | |
| 6613 | register dw_die_ref context_die; | |
| 6614 | { | |
| 6615 | register tree origin = decl_ultimate_origin (decl); | |
| 6616 | register dw_die_ref var_die = new_die (DW_TAG_variable, context_die); | |
| bdb669cb JM |
6617 | dw_die_ref old_die = lookup_decl_die (decl); |
| 6618 | ||
| a3f97cbb JW |
6619 | if (origin != NULL) |
| 6620 | { | |
| 6621 | add_abstract_origin_attribute (var_die, origin); | |
| 6622 | } | |
| bdb669cb JM |
6623 | else if (old_die) |
| 6624 | { | |
| 6625 | if (get_AT_flag (old_die, DW_AT_declaration) != 1) | |
| 6626 | abort (); | |
| 6627 | add_AT_die_ref (var_die, DW_AT_specification, old_die); | |
| 6628 | if (DECL_NAME (decl)) | |
| 6629 | { | |
| 6630 | register unsigned file_index | |
| 6631 | = lookup_filename (DECL_SOURCE_FILE (decl)); | |
| 6632 | if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index) | |
| 6633 | add_AT_unsigned (var_die, DW_AT_decl_file, file_index); | |
| 6634 | if (get_AT_unsigned (old_die, DW_AT_decl_line) | |
| 6635 | != DECL_SOURCE_LINE (decl)) | |
| 6636 | add_AT_unsigned | |
| 6637 | (var_die, DW_AT_decl_line, DECL_SOURCE_LINE (decl)); | |
| 6638 | } | |
| 6639 | } | |
| a3f97cbb JW |
6640 | else |
| 6641 | { | |
| 6642 | add_name_and_src_coords_attributes (var_die, decl); | |
| a3f97cbb JW |
6643 | add_type_attribute (var_die, TREE_TYPE (decl), |
| 6644 | TREE_READONLY (decl), | |
| 6645 | TREE_THIS_VOLATILE (decl), context_die); | |
| 273dbe67 JM |
6646 | if (TREE_PUBLIC (decl)) |
| 6647 | add_AT_flag (var_die, DW_AT_external, 1); | |
| 6648 | if (DECL_ARTIFICIAL (decl)) | |
| 6649 | add_AT_flag (var_die, DW_AT_artificial, 1); | |
| a3f97cbb JW |
6650 | } |
| 6651 | if (DECL_ABSTRACT (decl)) | |
| 6652 | { | |
| 6653 | equate_decl_number_to_die (decl, var_die); | |
| 6654 | } | |
| 6655 | else if (!DECL_EXTERNAL (decl)) | |
| 6656 | { | |
| 7e23cb16 JM |
6657 | if (TREE_STATIC (decl)) |
| 6658 | equate_decl_number_to_die (decl, var_die); | |
| a3f97cbb | 6659 | add_location_or_const_value_attribute (var_die, decl); |
| d291dd49 | 6660 | add_pubname (decl, var_die); |
| a3f97cbb | 6661 | } |
| bdb669cb JM |
6662 | else if (decl_class_context (decl)) |
| 6663 | { | |
| 6664 | equate_decl_number_to_die (decl, var_die); | |
| 6665 | add_AT_flag (var_die, DW_AT_declaration, 1); | |
| 6666 | } | |
| a3f97cbb JW |
6667 | } |
| 6668 | ||
| 6669 | /* Generate a DIE to represent a label identifier. */ | |
| 6670 | static void | |
| 6671 | gen_label_die (decl, context_die) | |
| 6672 | register tree decl; | |
| 6673 | register dw_die_ref context_die; | |
| 6674 | { | |
| 6675 | register tree origin = decl_ultimate_origin (decl); | |
| 6676 | register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die); | |
| 6677 | register rtx insn; | |
| 6678 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 5c90448c | 6679 | char label2[MAX_ARTIFICIAL_LABEL_BYTES]; |
| a3f97cbb JW |
6680 | if (origin != NULL) |
| 6681 | { | |
| 6682 | add_abstract_origin_attribute (lbl_die, origin); | |
| 6683 | } | |
| 6684 | else | |
| 6685 | { | |
| 6686 | add_name_and_src_coords_attributes (lbl_die, decl); | |
| 6687 | } | |
| 6688 | if (DECL_ABSTRACT (decl)) | |
| 6689 | { | |
| 6690 | equate_decl_number_to_die (decl, lbl_die); | |
| 6691 | } | |
| 6692 | else | |
| 6693 | { | |
| 6694 | insn = DECL_RTL (decl); | |
| 6695 | if (GET_CODE (insn) == CODE_LABEL) | |
| 6696 | { | |
| 6697 | /* When optimization is enabled (via -O) some parts of the compiler | |
| 6698 | (e.g. jump.c and cse.c) may try to delete CODE_LABEL insns which | |
| 6699 | represent source-level labels which were explicitly declared by | |
| 6700 | the user. This really shouldn't be happening though, so catch | |
| 6701 | it if it ever does happen. */ | |
| 6702 | if (INSN_DELETED_P (insn)) | |
| 6703 | { | |
| 6704 | abort (); /* Should never happen. */ | |
| 6705 | } | |
| 5c90448c JM |
6706 | sprintf (label2, INSN_LABEL_FMT, current_funcdef_number); |
| 6707 | ASM_GENERATE_INTERNAL_LABEL (label, label2, | |
| 6708 | (unsigned) INSN_UID (insn)); | |
| a3f97cbb JW |
6709 | add_AT_lbl_id (lbl_die, DW_AT_low_pc, label); |
| 6710 | } | |
| 6711 | } | |
| 6712 | } | |
| 6713 | ||
| 6714 | /* Generate a DIE for a lexical block. */ | |
| 6715 | static void | |
| d7248bff | 6716 | gen_lexical_block_die (stmt, context_die, depth) |
| a3f97cbb JW |
6717 | register tree stmt; |
| 6718 | register dw_die_ref context_die; | |
| d7248bff | 6719 | int depth; |
| a3f97cbb JW |
6720 | { |
| 6721 | register dw_die_ref stmt_die = new_die (DW_TAG_lexical_block, context_die); | |
| 6722 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 6723 | if (!BLOCK_ABSTRACT (stmt)) | |
| 6724 | { | |
| 5c90448c JM |
6725 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
| 6726 | next_block_number); | |
| a3f97cbb | 6727 | add_AT_lbl_id (stmt_die, DW_AT_low_pc, label); |
| 5c90448c | 6728 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
| a3f97cbb JW |
6729 | add_AT_lbl_id (stmt_die, DW_AT_high_pc, label); |
| 6730 | } | |
| 7d4440be | 6731 | push_decl_scope (stmt); |
| d7248bff | 6732 | decls_for_scope (stmt, stmt_die, depth); |
| 7d4440be | 6733 | pop_decl_scope (); |
| a3f97cbb JW |
6734 | } |
| 6735 | ||
| 6736 | /* Generate a DIE for an inlined subprogram. */ | |
| 6737 | static void | |
| d7248bff | 6738 | gen_inlined_subroutine_die (stmt, context_die, depth) |
| a3f97cbb JW |
6739 | register tree stmt; |
| 6740 | register dw_die_ref context_die; | |
| d7248bff | 6741 | int depth; |
| a3f97cbb | 6742 | { |
| a3f97cbb JW |
6743 | if (!BLOCK_ABSTRACT (stmt)) |
| 6744 | { | |
| d7248bff | 6745 | register dw_die_ref subr_die = new_die (DW_TAG_inlined_subroutine, |
| 7e23cb16 | 6746 | context_die); |
| ab72d377 | 6747 | register tree decl = block_ultimate_origin (stmt); |
| d7248bff | 6748 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; |
| ab72d377 | 6749 | add_abstract_origin_attribute (subr_die, decl); |
| 5c90448c JM |
6750 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL, |
| 6751 | next_block_number); | |
| a3f97cbb | 6752 | add_AT_lbl_id (subr_die, DW_AT_low_pc, label); |
| 5c90448c | 6753 | ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_END_LABEL, next_block_number); |
| a3f97cbb | 6754 | add_AT_lbl_id (subr_die, DW_AT_high_pc, label); |
| ab72d377 | 6755 | push_decl_scope (decl); |
| d7248bff | 6756 | decls_for_scope (stmt, subr_die, depth); |
| ab72d377 | 6757 | pop_decl_scope (); |
| 7e23cb16 | 6758 | current_function_has_inlines = 1; |
| a3f97cbb | 6759 | } |
| a3f97cbb JW |
6760 | } |
| 6761 | ||
| 6762 | /* Generate a DIE for a field in a record, or structure. */ | |
| 6763 | static void | |
| 6764 | gen_field_die (decl, context_die) | |
| 6765 | register tree decl; | |
| 6766 | register dw_die_ref context_die; | |
| 6767 | { | |
| 6768 | register dw_die_ref decl_die = new_die (DW_TAG_member, context_die); | |
| 6769 | add_name_and_src_coords_attributes (decl_die, decl); | |
| a3f97cbb JW |
6770 | add_type_attribute (decl_die, member_declared_type (decl), |
| 6771 | TREE_READONLY (decl), TREE_THIS_VOLATILE (decl), | |
| 6772 | context_die); | |
| 6773 | /* If this is a bit field... */ | |
| 6774 | if (DECL_BIT_FIELD_TYPE (decl)) | |
| 6775 | { | |
| 6776 | add_byte_size_attribute (decl_die, decl); | |
| 6777 | add_bit_size_attribute (decl_die, decl); | |
| 6778 | add_bit_offset_attribute (decl_die, decl); | |
| 6779 | } | |
| 6780 | add_data_member_location_attribute (decl_die, decl); | |
| 273dbe67 JM |
6781 | if (DECL_ARTIFICIAL (decl)) |
| 6782 | add_AT_flag (decl_die, DW_AT_artificial, 1); | |
| a3f97cbb JW |
6783 | } |
| 6784 | ||
| ab72d377 JM |
6785 | #if 0 |
| 6786 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. | |
| 6787 | Use modified_type_die instead. | |
| a3f97cbb JW |
6788 | We keep this code here just in case these types of DIEs may be needed to |
| 6789 | represent certain things in other languages (e.g. Pascal) someday. */ | |
| 6790 | static void | |
| 6791 | gen_pointer_type_die (type, context_die) | |
| 6792 | register tree type; | |
| 6793 | register dw_die_ref context_die; | |
| 6794 | { | |
| 273dbe67 JM |
6795 | register dw_die_ref ptr_die = new_die |
| 6796 | (DW_TAG_pointer_type, scope_die_for (type, context_die)); | |
| a3f97cbb | 6797 | equate_type_number_to_die (type, ptr_die); |
| a3f97cbb | 6798 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
| ab72d377 | 6799 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
| a3f97cbb JW |
6800 | } |
| 6801 | ||
| ab72d377 JM |
6802 | /* Don't generate either pointer_type DIEs or reference_type DIEs here. |
| 6803 | Use modified_type_die instead. | |
| a3f97cbb JW |
6804 | We keep this code here just in case these types of DIEs may be needed to |
| 6805 | represent certain things in other languages (e.g. Pascal) someday. */ | |
| 6806 | static void | |
| 6807 | gen_reference_type_die (type, context_die) | |
| 6808 | register tree type; | |
| 6809 | register dw_die_ref context_die; | |
| 6810 | { | |
| 273dbe67 JM |
6811 | register dw_die_ref ref_die = new_die |
| 6812 | (DW_TAG_reference_type, scope_die_for (type, context_die)); | |
| a3f97cbb | 6813 | equate_type_number_to_die (type, ref_die); |
| a3f97cbb | 6814 | add_type_attribute (ref_die, TREE_TYPE (type), 0, 0, context_die); |
| ab72d377 | 6815 | add_AT_unsigned (mod_type_die, DW_AT_byte_size, PTR_SIZE); |
| a3f97cbb | 6816 | } |
| ab72d377 | 6817 | #endif |
| a3f97cbb JW |
6818 | |
| 6819 | /* Generate a DIE for a pointer to a member type. */ | |
| 6820 | static void | |
| 6821 | gen_ptr_to_mbr_type_die (type, context_die) | |
| 6822 | register tree type; | |
| 6823 | register dw_die_ref context_die; | |
| 6824 | { | |
| ab72d377 | 6825 | register dw_die_ref ptr_die = new_die |
| 273dbe67 | 6826 | (DW_TAG_ptr_to_member_type, scope_die_for (type, context_die)); |
| a3f97cbb | 6827 | equate_type_number_to_die (type, ptr_die); |
| a3f97cbb | 6828 | add_AT_die_ref (ptr_die, DW_AT_containing_type, |
| bdb669cb | 6829 | lookup_type_die (TYPE_OFFSET_BASETYPE (type))); |
| a3f97cbb JW |
6830 | add_type_attribute (ptr_die, TREE_TYPE (type), 0, 0, context_die); |
| 6831 | } | |
| 6832 | ||
| 6833 | /* Generate the DIE for the compilation unit. */ | |
| 6834 | static void | |
| 6835 | gen_compile_unit_die (main_input_filename) | |
| 6836 | register char *main_input_filename; | |
| 6837 | { | |
| 6838 | char producer[250]; | |
| a3f97cbb JW |
6839 | char *wd = getpwd (); |
| 6840 | ||
| 6841 | comp_unit_die = new_die (DW_TAG_compile_unit, NULL); | |
| 6842 | ||
| bdb669cb JM |
6843 | add_name_attribute (comp_unit_die, main_input_filename); |
| 6844 | ||
| 6845 | if (wd) | |
| a3f97cbb | 6846 | { |
| bdb669cb | 6847 | add_AT_string (comp_unit_die, DW_AT_comp_dir, wd); |
| a3f97cbb JW |
6848 | } |
| 6849 | ||
| 6850 | sprintf (producer, "%s %s", language_string, version_string); | |
| 6851 | ||
| 6852 | #ifdef MIPS_DEBUGGING_INFO | |
| 6853 | /* The MIPS/SGI compilers place the 'cc' command line options in the producer | |
| 6854 | string. The SGI debugger looks for -g, -g1, -g2, or -g3; if they do | |
| 6855 | not appear in the producer string, the debugger reaches the conclusion | |
| 6856 | that the object file is stripped and has no debugging information. | |
| 6857 | To get the MIPS/SGI debugger to believe that there is debugging | |
| 6858 | information in the object file, we add a -g to the producer string. */ | |
| 4927276d JM |
6859 | if (debug_info_level > DINFO_LEVEL_TERSE) |
| 6860 | strcat (producer, " -g"); | |
| a3f97cbb JW |
6861 | #endif |
| 6862 | ||
| 6863 | add_AT_string (comp_unit_die, DW_AT_producer, producer); | |
| a9d38797 | 6864 | |
| a3f97cbb | 6865 | if (strcmp (language_string, "GNU C++") == 0) |
| a9d38797 | 6866 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C_plus_plus); |
| a3f97cbb | 6867 | else if (strcmp (language_string, "GNU Ada") == 0) |
| a9d38797 JM |
6868 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Ada83); |
| 6869 | else if (strcmp (language_string, "GNU F77") == 0) | |
| 6870 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_Fortran77); | |
| a3f97cbb | 6871 | else if (flag_traditional) |
| a9d38797 | 6872 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C); |
| a3f97cbb | 6873 | else |
| a9d38797 JM |
6874 | add_AT_unsigned (comp_unit_die, DW_AT_language, DW_LANG_C89); |
| 6875 | ||
| 6876 | #if 0 /* unimplemented */ | |
| e90b62db | 6877 | if (debug_info_level >= DINFO_LEVEL_VERBOSE) |
| a9d38797 JM |
6878 | add_AT_unsigned (comp_unit_die, DW_AT_macro_info, 0); |
| 6879 | #endif | |
| a3f97cbb JW |
6880 | } |
| 6881 | ||
| 6882 | /* Generate a DIE for a string type. */ | |
| 6883 | static void | |
| 6884 | gen_string_type_die (type, context_die) | |
| 6885 | register tree type; | |
| 6886 | register dw_die_ref context_die; | |
| 6887 | { | |
| ab72d377 JM |
6888 | register dw_die_ref type_die = new_die |
| 6889 | (DW_TAG_string_type, scope_die_for (type, context_die)); | |
| bdb669cb | 6890 | equate_type_number_to_die (type, type_die); |
| a3f97cbb JW |
6891 | |
| 6892 | /* Fudge the string length attribute for now. */ | |
| 6893 | ||
| 6894 | /* TODO: add string length info. | |
| 6895 | string_length_attribute (TYPE_MAX_VALUE (TYPE_DOMAIN (type))); | |
| 6896 | bound_representation (upper_bound, 0, 'u'); */ | |
| 6897 | } | |
| 6898 | ||
| 61b32c02 JM |
6899 | /* Generate the DIE for a base class. */ |
| 6900 | static void | |
| 6901 | gen_inheritance_die (binfo, context_die) | |
| 6902 | register tree binfo; | |
| 6903 | register dw_die_ref context_die; | |
| 6904 | { | |
| 6905 | dw_die_ref die = new_die (DW_TAG_inheritance, context_die); | |
| 6906 | add_type_attribute (die, BINFO_TYPE (binfo), 0, 0, context_die); | |
| 6907 | add_data_member_location_attribute (die, binfo); | |
| 6908 | if (TREE_VIA_VIRTUAL (binfo)) | |
| 6909 | add_AT_unsigned (die, DW_AT_virtuality, DW_VIRTUALITY_virtual); | |
| 6910 | if (TREE_VIA_PUBLIC (binfo)) | |
| 6911 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_public); | |
| 6912 | else if (TREE_VIA_PROTECTED (binfo)) | |
| 6913 | add_AT_unsigned (die, DW_AT_accessibility, DW_ACCESS_protected); | |
| 6914 | } | |
| 6915 | ||
| a3f97cbb JW |
6916 | /* Genearate a DIE for a class member. */ |
| 6917 | static void | |
| 6918 | gen_member_die (type, context_die) | |
| 6919 | register tree type; | |
| 6920 | register dw_die_ref context_die; | |
| 6921 | { | |
| 61b32c02 | 6922 | register tree member; |
| a3f97cbb JW |
6923 | /* If this is not an incomplete type, output descriptions of each of its |
| 6924 | members. Note that as we output the DIEs necessary to represent the | |
| 6925 | members of this record or union type, we will also be trying to output | |
| 6926 | DIEs to represent the *types* of those members. However the `type' | |
| 6927 | function (above) will specifically avoid generating type DIEs for member | |
| 6928 | types *within* the list of member DIEs for this (containing) type execpt | |
| 6929 | for those types (of members) which are explicitly marked as also being | |
| 6930 | members of this (containing) type themselves. The g++ front- end can | |
| 6931 | force any given type to be treated as a member of some other | |
| 6932 | (containing) type by setting the TYPE_CONTEXT of the given (member) type | |
| 6933 | to point to the TREE node representing the appropriate (containing) | |
| 6934 | type. */ | |
| 6935 | ||
| 61b32c02 JM |
6936 | /* First output info about the base classes. */ |
| 6937 | if (TYPE_BINFO (type) && TYPE_BINFO_BASETYPES (type)) | |
| a3f97cbb | 6938 | { |
| 61b32c02 JM |
6939 | register tree bases = TYPE_BINFO_BASETYPES (type); |
| 6940 | register int n_bases = TREE_VEC_LENGTH (bases); | |
| 6941 | register int i; | |
| 6942 | ||
| 6943 | for (i = 0; i < n_bases; i++) | |
| 6944 | gen_inheritance_die (TREE_VEC_ELT (bases, i), context_die); | |
| a3f97cbb JW |
6945 | } |
| 6946 | ||
| 61b32c02 JM |
6947 | /* Now output info about the data members and type members. */ |
| 6948 | for (member = TYPE_FIELDS (type); member; member = TREE_CHAIN (member)) | |
| 6949 | gen_decl_die (member, context_die); | |
| 6950 | ||
| a3f97cbb | 6951 | /* Now output info about the function members (if any). */ |
| 61b32c02 JM |
6952 | for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member)) |
| 6953 | gen_decl_die (member, context_die); | |
| a3f97cbb JW |
6954 | } |
| 6955 | ||
| 6956 | /* Generate a DIE for a structure or union type. */ | |
| 6957 | static void | |
| 273dbe67 | 6958 | gen_struct_or_union_type_die (type, context_die) |
| a3f97cbb | 6959 | register tree type; |
| a3f97cbb JW |
6960 | register dw_die_ref context_die; |
| 6961 | { | |
| 273dbe67 | 6962 | register dw_die_ref type_die = lookup_type_die (type); |
| a082c85a JM |
6963 | register dw_die_ref scope_die = 0; |
| 6964 | register int nested = 0; | |
| 273dbe67 JM |
6965 | |
| 6966 | if (type_die && ! TYPE_SIZE (type)) | |
| 6967 | return; | |
| a082c85a JM |
6968 | |
| 6969 | if (TYPE_CONTEXT (type) | |
| 6970 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't') | |
| 6971 | nested = 1; | |
| 6972 | ||
| 6973 | if (! type_die || nested) | |
| 6974 | scope_die = scope_die_for (type, context_die); | |
| 6975 | ||
| 6976 | if (! type_die || (nested && scope_die == comp_unit_die)) | |
| 273dbe67 | 6977 | /* First occurrence of type or toplevel definition of nested class. */ |
| a3f97cbb | 6978 | { |
| 273dbe67 | 6979 | register dw_die_ref old_die = type_die; |
| a3f97cbb JW |
6980 | type_die = new_die (TREE_CODE (type) == RECORD_TYPE |
| 6981 | ? DW_TAG_structure_type : DW_TAG_union_type, | |
| a082c85a | 6982 | scope_die); |
| a3f97cbb JW |
6983 | equate_type_number_to_die (type, type_die); |
| 6984 | add_name_attribute (type_die, type_tag (type)); | |
| 273dbe67 JM |
6985 | if (old_die) |
| 6986 | add_AT_die_ref (type_die, DW_AT_specification, old_die); | |
| a3f97cbb | 6987 | } |
| 4b674448 | 6988 | else |
| 273dbe67 | 6989 | remove_AT (type_die, DW_AT_declaration); |
| a3f97cbb JW |
6990 | |
| 6991 | /* If this type has been completed, then give it a byte_size attribute and | |
| 6992 | then give a list of members. */ | |
| a082c85a JM |
6993 | if (TYPE_SIZE (type) |
| 6994 | /* If we're getting a reference to one nested class from another | |
| 6995 | nested class, don't recurse. */ | |
| 6996 | && ! (nested && scope_die != context_die | |
| 6997 | && scope_die == lookup_type_die (TYPE_CONTEXT (type)))) | |
| a3f97cbb JW |
6998 | { |
| 6999 | /* Prevent infinite recursion in cases where the type of some member of | |
| 7000 | this type is expressed in terms of this type itself. */ | |
| 7001 | TREE_ASM_WRITTEN (type) = 1; | |
| 273dbe67 JM |
7002 | add_byte_size_attribute (type_die, type); |
| 7003 | push_decl_scope (type); | |
| 7004 | gen_member_die (type, type_die); | |
| 7005 | pop_decl_scope (); | |
| a3f97cbb | 7006 | } |
| 4b674448 JM |
7007 | else |
| 7008 | add_AT_flag (type_die, DW_AT_declaration, 1); | |
| a3f97cbb JW |
7009 | } |
| 7010 | ||
| 7011 | /* Generate a DIE for a subroutine _type_. */ | |
| 7012 | static void | |
| 7013 | gen_subroutine_type_die (type, context_die) | |
| 7014 | register tree type; | |
| 7015 | register dw_die_ref context_die; | |
| 7016 | { | |
| 7017 | register tree return_type = TREE_TYPE (type); | |
| 273dbe67 JM |
7018 | register dw_die_ref subr_die = new_die |
| 7019 | (DW_TAG_subroutine_type, scope_die_for (type, context_die)); | |
| a3f97cbb JW |
7020 | equate_type_number_to_die (type, subr_die); |
| 7021 | add_prototyped_attribute (subr_die, type); | |
| a3f97cbb JW |
7022 | add_type_attribute (subr_die, return_type, 0, 0, context_die); |
| 7023 | gen_formal_types_die (type, context_die); | |
| 7024 | } | |
| 7025 | ||
| 7026 | /* Generate a DIE for a type definition */ | |
| 7027 | static void | |
| 7028 | gen_typedef_die (decl, context_die) | |
| 7029 | register tree decl; | |
| 7030 | register dw_die_ref context_die; | |
| 7031 | { | |
| 7032 | register tree origin = decl_ultimate_origin (decl); | |
| 7033 | register dw_die_ref type_die; | |
| ab72d377 | 7034 | type_die = new_die (DW_TAG_typedef, scope_die_for (decl, context_die)); |
| a3f97cbb JW |
7035 | if (origin != NULL) |
| 7036 | { | |
| 7037 | add_abstract_origin_attribute (type_die, origin); | |
| 7038 | } | |
| 7039 | else | |
| 7040 | { | |
| 7041 | add_name_and_src_coords_attributes (type_die, decl); | |
| a3f97cbb JW |
7042 | add_type_attribute (type_die, TREE_TYPE (decl), |
| 7043 | TREE_READONLY (decl), | |
| 7044 | TREE_THIS_VOLATILE (decl), | |
| 7045 | context_die); | |
| 7046 | } | |
| 7047 | if (DECL_ABSTRACT (decl)) | |
| 7048 | { | |
| 7049 | equate_decl_number_to_die (decl, type_die); | |
| 7050 | } | |
| 7051 | } | |
| 7052 | ||
| 7053 | /* Generate a type description DIE. */ | |
| 7054 | static void | |
| 7055 | gen_type_die (type, context_die) | |
| 7056 | register tree type; | |
| 7057 | register dw_die_ref context_die; | |
| 7058 | { | |
| a3f97cbb JW |
7059 | if (type == 0 || type == error_mark_node) |
| 7060 | { | |
| 7061 | return; | |
| 7062 | } | |
| 7063 | ||
| 7064 | /* We are going to output a DIE to represent the unqualified version of of | |
| 7065 | this type (i.e. without any const or volatile qualifiers) so get the | |
| 7066 | main variant (i.e. the unqualified version) of this type now. */ | |
| 7067 | type = type_main_variant (type); | |
| 7068 | ||
| 7069 | if (TREE_ASM_WRITTEN (type)) | |
| 7070 | { | |
| 7071 | return; | |
| 7072 | } | |
| 7073 | ||
| 7074 | switch (TREE_CODE (type)) | |
| 7075 | { | |
| 7076 | case ERROR_MARK: | |
| 7077 | break; | |
| 7078 | ||
| 7079 | case POINTER_TYPE: | |
| 7080 | case REFERENCE_TYPE: | |
| 7081 | /* For these types, all that is required is that we output a DIE (or a | |
| 7082 | set of DIEs) to represent the "basis" type. */ | |
| 7083 | gen_type_die (TREE_TYPE (type), context_die); | |
| 7084 | break; | |
| 7085 | ||
| 7086 | case OFFSET_TYPE: | |
| 7087 | /* This code is used for C++ pointer-to-data-member types. */ | |
| 7088 | /* Output a description of the relevant class type. */ | |
| 7089 | gen_type_die (TYPE_OFFSET_BASETYPE (type), context_die); | |
| 7090 | /* Output a description of the type of the object pointed to. */ | |
| 7091 | gen_type_die (TREE_TYPE (type), context_die); | |
| 7092 | /* Now output a DIE to represent this pointer-to-data-member type | |
| 7093 | itself. */ | |
| 7094 | gen_ptr_to_mbr_type_die (type, context_die); | |
| 7095 | break; | |
| 7096 | ||
| 7097 | case SET_TYPE: | |
| 7098 | gen_type_die (TYPE_DOMAIN (type), context_die); | |
| 7099 | gen_set_type_die (type, context_die); | |
| 7100 | break; | |
| 7101 | ||
| 7102 | case FILE_TYPE: | |
| 7103 | gen_type_die (TREE_TYPE (type), context_die); | |
| 7104 | abort (); /* No way to represent these in Dwarf yet! */ | |
| 7105 | break; | |
| 7106 | ||
| 7107 | case FUNCTION_TYPE: | |
| 7108 | /* Force out return type (in case it wasn't forced out already). */ | |
| 7109 | gen_type_die (TREE_TYPE (type), context_die); | |
| 7110 | gen_subroutine_type_die (type, context_die); | |
| 7111 | break; | |
| 7112 | ||
| 7113 | case METHOD_TYPE: | |
| 7114 | /* Force out return type (in case it wasn't forced out already). */ | |
| 7115 | gen_type_die (TREE_TYPE (type), context_die); | |
| 7116 | gen_subroutine_type_die (type, context_die); | |
| 7117 | break; | |
| 7118 | ||
| 7119 | case ARRAY_TYPE: | |
| 7120 | if (TYPE_STRING_FLAG (type) && TREE_CODE (TREE_TYPE (type)) == CHAR_TYPE) | |
| 7121 | { | |
| 7122 | gen_type_die (TREE_TYPE (type), context_die); | |
| 7123 | gen_string_type_die (type, context_die); | |
| 7124 | } | |
| 7125 | else | |
| 7126 | { | |
| 7127 | gen_array_type_die (type, context_die); | |
| 7128 | } | |
| 7129 | break; | |
| 7130 | ||
| 7131 | case ENUMERAL_TYPE: | |
| 7132 | case RECORD_TYPE: | |
| 7133 | case UNION_TYPE: | |
| 7134 | case QUAL_UNION_TYPE: | |
| a082c85a JM |
7135 | /* If this is a nested type whose containing class hasn't been |
| 7136 | written out yet, writing it out will cover this one, too. */ | |
| 7137 | if (TYPE_CONTEXT (type) | |
| 7138 | && TREE_CODE_CLASS (TREE_CODE (TYPE_CONTEXT (type))) == 't' | |
| 7139 | && ! TREE_ASM_WRITTEN (TYPE_CONTEXT (type))) | |
| 7140 | gen_type_die (TYPE_CONTEXT (type), context_die); | |
| 7141 | else if (TREE_CODE (type) == ENUMERAL_TYPE) | |
| 273dbe67 | 7142 | gen_enumeration_type_die (type, context_die); |
| a3f97cbb | 7143 | else |
| 273dbe67 | 7144 | gen_struct_or_union_type_die (type, context_die); |
| 4b674448 JM |
7145 | |
| 7146 | /* Don't set TREE_ASM_WRITTEN on an incomplete struct; we want to fix | |
| a082c85a JM |
7147 | it up if it is ever completed. gen_*_type_die will set it for us |
| 7148 | when appropriate. */ | |
| 7149 | return; | |
| a3f97cbb JW |
7150 | |
| 7151 | case VOID_TYPE: | |
| 7152 | case INTEGER_TYPE: | |
| 7153 | case REAL_TYPE: | |
| 7154 | case COMPLEX_TYPE: | |
| 7155 | case BOOLEAN_TYPE: | |
| 7156 | case CHAR_TYPE: | |
| 7157 | /* No DIEs needed for fundamental types. */ | |
| 7158 | break; | |
| 7159 | ||
| 7160 | case LANG_TYPE: | |
| 7161 | /* No Dwarf representation currently defined. */ | |
| 7162 | break; | |
| 7163 | ||
| 7164 | default: | |
| 7165 | abort (); | |
| 7166 | } | |
| 7167 | ||
| 7168 | TREE_ASM_WRITTEN (type) = 1; | |
| 7169 | } | |
| 7170 | ||
| 7171 | /* Generate a DIE for a tagged type instantiation. */ | |
| 7172 | static void | |
| 7173 | gen_tagged_type_instantiation_die (type, context_die) | |
| 7174 | register tree type; | |
| 7175 | register dw_die_ref context_die; | |
| 7176 | { | |
| 7177 | if (type == 0 || type == error_mark_node) | |
| 7178 | { | |
| 7179 | return; | |
| 7180 | } | |
| 7181 | ||
| 7182 | /* We are going to output a DIE to represent the unqualified version of of | |
| 7183 | this type (i.e. without any const or volatile qualifiers) so make sure | |
| 7184 | that we have the main variant (i.e. the unqualified version) of this | |
| 7185 | type now. */ | |
| 7186 | assert (type == type_main_variant (type)); | |
| 7187 | assert (TREE_ASM_WRITTEN (type)); | |
| 7188 | ||
| 7189 | switch (TREE_CODE (type)) | |
| 7190 | { | |
| 7191 | case ERROR_MARK: | |
| 7192 | break; | |
| 7193 | ||
| 7194 | case ENUMERAL_TYPE: | |
| 7195 | gen_inlined_enumeration_type_die (type, context_die); | |
| 7196 | break; | |
| 7197 | ||
| 7198 | case RECORD_TYPE: | |
| 7199 | gen_inlined_structure_type_die (type, context_die); | |
| 7200 | break; | |
| 7201 | ||
| 7202 | case UNION_TYPE: | |
| 7203 | case QUAL_UNION_TYPE: | |
| 7204 | gen_inlined_union_type_die (type, context_die); | |
| 7205 | break; | |
| 7206 | ||
| 7207 | default: | |
| 7208 | abort (); /* Should never happen. */ | |
| 7209 | } | |
| 7210 | } | |
| 7211 | ||
| 7212 | /* Generate a DW_TAG_lexical_block DIE followed by DIEs to represent all of the | |
| 7213 | things which are local to the given block. */ | |
| 7214 | static void | |
| d7248bff | 7215 | gen_block_die (stmt, context_die, depth) |
| a3f97cbb JW |
7216 | register tree stmt; |
| 7217 | register dw_die_ref context_die; | |
| d7248bff | 7218 | int depth; |
| a3f97cbb JW |
7219 | { |
| 7220 | register int must_output_die = 0; | |
| 7221 | register tree origin; | |
| 7222 | register tree decl; | |
| 7223 | register enum tree_code origin_code; | |
| 7224 | ||
| 7225 | /* Ignore blocks never really used to make RTL. */ | |
| 7226 | ||
| 7227 | if (!stmt || !TREE_USED (stmt)) | |
| 7228 | { | |
| 7229 | return; | |
| 7230 | } | |
| 7231 | ||
| 7232 | /* Determine the "ultimate origin" of this block. This block may be an | |
| 7233 | inlined instance of an inlined instance of inline function, so we have | |
| 7234 | to trace all of the way back through the origin chain to find out what | |
| 7235 | sort of node actually served as the original seed for the creation of | |
| 7236 | the current block. */ | |
| 7237 | origin = block_ultimate_origin (stmt); | |
| 7238 | origin_code = (origin != NULL) ? TREE_CODE (origin) : ERROR_MARK; | |
| 7239 | ||
| 7240 | /* Determine if we need to output any Dwarf DIEs at all to represent this | |
| 7241 | block. */ | |
| 7242 | if (origin_code == FUNCTION_DECL) | |
| 7243 | { | |
| 7244 | /* The outer scopes for inlinings *must* always be represented. We | |
| 7245 | generate DW_TAG_inlined_subroutine DIEs for them. (See below.) */ | |
| 7246 | must_output_die = 1; | |
| 7247 | } | |
| 7248 | else | |
| 7249 | { | |
| 7250 | /* In the case where the current block represents an inlining of the | |
| 7251 | "body block" of an inline function, we must *NOT* output any DIE for | |
| 7252 | this block because we have already output a DIE to represent the | |
| 7253 | whole inlined function scope and the "body block" of any function | |
| 7254 | doesn't really represent a different scope according to ANSI C | |
| 7255 | rules. So we check here to make sure that this block does not | |
| 7256 | represent a "body block inlining" before trying to set the | |
| 7257 | `must_output_die' flag. */ | |
| d7248bff | 7258 | if (! is_body_block (origin ? origin : stmt)) |
| a3f97cbb JW |
7259 | { |
| 7260 | /* Determine if this block directly contains any "significant" | |
| 7261 | local declarations which we will need to output DIEs for. */ | |
| 7262 | if (debug_info_level > DINFO_LEVEL_TERSE) | |
| 7263 | { | |
| 7264 | /* We are not in terse mode so *any* local declaration counts | |
| 7265 | as being a "significant" one. */ | |
| 7266 | must_output_die = (BLOCK_VARS (stmt) != NULL); | |
| 7267 | } | |
| 7268 | else | |
| 7269 | { | |
| 7270 | /* We are in terse mode, so only local (nested) function | |
| 7271 | definitions count as "significant" local declarations. */ | |
| 7272 | for (decl = BLOCK_VARS (stmt); | |
| 7273 | decl != NULL; decl = TREE_CHAIN (decl)) | |
| 7274 | { | |
| 7275 | if (TREE_CODE (decl) == FUNCTION_DECL | |
| 7276 | && DECL_INITIAL (decl)) | |
| 7277 | { | |
| 7278 | must_output_die = 1; | |
| 7279 | break; | |
| 7280 | } | |
| 7281 | } | |
| 7282 | } | |
| 7283 | } | |
| 7284 | } | |
| 7285 | ||
| 7286 | /* It would be a waste of space to generate a Dwarf DW_TAG_lexical_block | |
| 7287 | DIE for any block which contains no significant local declarations at | |
| 7288 | all. Rather, in such cases we just call `decls_for_scope' so that any | |
| 7289 | needed Dwarf info for any sub-blocks will get properly generated. Note | |
| 7290 | that in terse mode, our definition of what constitutes a "significant" | |
| 7291 | local declaration gets restricted to include only inlined function | |
| 7292 | instances and local (nested) function definitions. */ | |
| 7293 | if (must_output_die) | |
| 7294 | { | |
| 7295 | if (origin_code == FUNCTION_DECL) | |
| 7296 | { | |
| d7248bff | 7297 | gen_inlined_subroutine_die (stmt, context_die, depth); |
| a3f97cbb JW |
7298 | } |
| 7299 | else | |
| 7300 | { | |
| d7248bff | 7301 | gen_lexical_block_die (stmt, context_die, depth); |
| a3f97cbb JW |
7302 | } |
| 7303 | } | |
| 7304 | else | |
| d7248bff | 7305 | decls_for_scope (stmt, context_die, depth); |
| a3f97cbb JW |
7306 | } |
| 7307 | ||
| 7308 | /* Generate all of the decls declared within a given scope and (recursively) | |
| 7309 | all of it's sub-blocks. */ | |
| 7310 | static void | |
| d7248bff | 7311 | decls_for_scope (stmt, context_die, depth) |
| a3f97cbb JW |
7312 | register tree stmt; |
| 7313 | register dw_die_ref context_die; | |
| d7248bff | 7314 | int depth; |
| a3f97cbb JW |
7315 | { |
| 7316 | register tree decl; | |
| 7317 | register tree subblocks; | |
| 7318 | /* Ignore blocks never really used to make RTL. */ | |
| 7319 | if (!stmt || !TREE_USED (stmt)) | |
| 7320 | { | |
| 7321 | return; | |
| 7322 | } | |
| d7248bff | 7323 | if (!BLOCK_ABSTRACT (stmt) && depth > 0) |
| a3f97cbb JW |
7324 | { |
| 7325 | next_block_number++; | |
| 7326 | } | |
| 7327 | ||
| 7328 | /* Output the DIEs to represent all of the data objects, functions, | |
| 7329 | typedefs, and tagged types declared directly within this block but not | |
| 7330 | within any nested sub-blocks. */ | |
| 7331 | for (decl = BLOCK_VARS (stmt); | |
| 7332 | decl != NULL; decl = TREE_CHAIN (decl)) | |
| 7333 | { | |
| 7334 | gen_decl_die (decl, context_die); | |
| 7335 | } | |
| 7336 | ||
| 7337 | /* Output the DIEs to represent all sub-blocks (and the items declared | |
| 7338 | therein) of this block. */ | |
| 7339 | for (subblocks = BLOCK_SUBBLOCKS (stmt); | |
| 7340 | subblocks != NULL; | |
| 7341 | subblocks = BLOCK_CHAIN (subblocks)) | |
| 7342 | { | |
| d7248bff | 7343 | gen_block_die (subblocks, context_die, depth + 1); |
| a3f97cbb JW |
7344 | } |
| 7345 | } | |
| 7346 | ||
| 7347 | /* Generate Dwarf debug information for a decl described by DECL. */ | |
| 7348 | static void | |
| 7349 | gen_decl_die (decl, context_die) | |
| 7350 | register tree decl; | |
| 7351 | register dw_die_ref context_die; | |
| 7352 | { | |
| 7353 | register tree origin; | |
| 7354 | /* Make a note of the decl node we are going to be working on. We may need | |
| 7355 | to give the user the source coordinates of where it appeared in case we | |
| 7356 | notice (later on) that something about it looks screwy. */ | |
| 7357 | dwarf_last_decl = decl; | |
| 7358 | ||
| 7359 | if (TREE_CODE (decl) == ERROR_MARK) | |
| 7360 | { | |
| 7361 | return; | |
| 7362 | } | |
| 7363 | ||
| 7364 | /* If this ..._DECL node is marked to be ignored, then ignore it. But don't | |
| 7365 | ignore a function definition, since that would screw up our count of | |
| 7366 | blocks, and that it turn will completely screw up the the labels we will | |
| 7367 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for | |
| 7368 | subsequent blocks). */ | |
| 7369 | if (DECL_IGNORED_P (decl) && TREE_CODE (decl) != FUNCTION_DECL) | |
| 7370 | { | |
| 7371 | return; | |
| 7372 | } | |
| 7373 | ||
| a3f97cbb JW |
7374 | switch (TREE_CODE (decl)) |
| 7375 | { | |
| 7376 | case CONST_DECL: | |
| 7377 | /* The individual enumerators of an enum type get output when we output | |
| 7378 | the Dwarf representation of the relevant enum type itself. */ | |
| 7379 | break; | |
| 7380 | ||
| 7381 | case FUNCTION_DECL: | |
| 7382 | /* If we are in terse mode, don't output any DIEs to represent mere | |
| bdb669cb JM |
7383 | function declarations, unless they are class members. */ |
| 7384 | if (DECL_INITIAL (decl) == NULL_TREE && DECL_CONTEXT (decl) == NULL_TREE) | |
| a3f97cbb JW |
7385 | { |
| 7386 | break; | |
| 7387 | } | |
| bdb669cb | 7388 | |
| a3f97cbb JW |
7389 | /* Before we describe the FUNCTION_DECL itself, make sure that we have |
| 7390 | described its return type. */ | |
| 4927276d JM |
7391 | if (debug_info_level > DINFO_LEVEL_TERSE) |
| 7392 | gen_type_die (TREE_TYPE (TREE_TYPE (decl)), context_die); | |
| a3f97cbb JW |
7393 | |
| 7394 | /* Now output a DIE to represent the function itself. */ | |
| 7395 | gen_subprogram_die (decl, context_die); | |
| 7396 | break; | |
| 7397 | ||
| 7398 | case TYPE_DECL: | |
| 7399 | /* If we are in terse mode, don't generate any DIEs to represent any | |
| 4927276d | 7400 | actual typedefs. */ |
| a3f97cbb | 7401 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
| 4927276d | 7402 | break; |
| a3f97cbb | 7403 | |
| 5c90448c JM |
7404 | /* In the special case of a TYPE_DECL node representing the |
| 7405 | declaration of some type tag, if the given TYPE_DECL is marked as | |
| a3f97cbb JW |
7406 | having been instantiated from some other (original) TYPE_DECL node |
| 7407 | (e.g. one which was generated within the original definition of an | |
| 7408 | inline function) we have to generate a special (abbreviated) | |
| 7409 | DW_TAG_structure_type, DW_TAG_union_type, or DW_TAG_enumeration-type | |
| 7410 | DIE here. */ | |
| 5c90448c | 7411 | if (TYPE_DECL_IS_STUB (decl) && DECL_ABSTRACT_ORIGIN (decl)) |
| a3f97cbb JW |
7412 | { |
| 7413 | gen_tagged_type_instantiation_die (TREE_TYPE (decl), context_die); | |
| 7414 | break; | |
| 7415 | } | |
| 7416 | gen_type_die (TREE_TYPE (decl), context_die); | |
| 7417 | ||
| 5c90448c | 7418 | if (! TYPE_DECL_IS_STUB (decl)) |
| a3f97cbb JW |
7419 | { |
| 7420 | /* Output a DIE to represent the typedef itself. */ | |
| 7421 | gen_typedef_die (decl, context_die); | |
| 7422 | } | |
| 7423 | break; | |
| 7424 | ||
| 7425 | case LABEL_DECL: | |
| 7426 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
| 7427 | { | |
| 7428 | gen_label_die (decl, context_die); | |
| 7429 | } | |
| 7430 | break; | |
| 7431 | ||
| 7432 | case VAR_DECL: | |
| 7433 | /* If we are in terse mode, don't generate any DIEs to represent any | |
| 7434 | variable declarations or definitions. */ | |
| 7435 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
| 7436 | { | |
| 7437 | break; | |
| 7438 | } | |
| 7439 | ||
| 7440 | /* Output any DIEs that are needed to specify the type of this data | |
| 7441 | object. */ | |
| 7442 | gen_type_die (TREE_TYPE (decl), context_die); | |
| 7443 | ||
| 7444 | /* Now output the DIE to represent the data object itself. This gets | |
| 7445 | complicated because of the possibility that the VAR_DECL really | |
| 7446 | represents an inlined instance of a formal parameter for an inline | |
| 7447 | function. */ | |
| 7448 | origin = decl_ultimate_origin (decl); | |
| 7449 | if (origin != NULL && TREE_CODE (origin) == PARM_DECL) | |
| 7450 | { | |
| 7451 | gen_formal_parameter_die (decl, context_die); | |
| 7452 | } | |
| 7453 | else | |
| 7454 | { | |
| 7455 | gen_variable_die (decl, context_die); | |
| 7456 | } | |
| 7457 | break; | |
| 7458 | ||
| 7459 | case FIELD_DECL: | |
| 7460 | /* Ignore the nameless fields that are used to skip bits. */ | |
| 7461 | if (DECL_NAME (decl) != 0) | |
| 7462 | { | |
| 7463 | gen_type_die (member_declared_type (decl), context_die); | |
| 7464 | gen_field_die (decl, context_die); | |
| 7465 | } | |
| 7466 | break; | |
| 7467 | ||
| 7468 | case PARM_DECL: | |
| 7469 | gen_type_die (TREE_TYPE (decl), context_die); | |
| 7470 | gen_formal_parameter_die (decl, context_die); | |
| 7471 | break; | |
| 7472 | ||
| 7473 | default: | |
| 7474 | abort (); | |
| 7475 | } | |
| a3f97cbb JW |
7476 | } |
| 7477 | \f | |
| 7478 | /***************** Debug Information Generation Hooks ***********************/ | |
| 7479 | void | |
| 9a666dda | 7480 | dwarf2out_file_scope_decl (decl, set_finalizing) |
| a3f97cbb JW |
7481 | register tree decl; |
| 7482 | register int set_finalizing; | |
| 7483 | { | |
| 7484 | if (TREE_CODE (decl) == ERROR_MARK) | |
| 7485 | { | |
| 7486 | return; | |
| 7487 | } | |
| 7488 | ||
| 7489 | /* If this ..._DECL node is marked to be ignored, then ignore it. We gotta | |
| 7490 | hope that the node in question doesn't represent a function definition. | |
| 7491 | If it does, then totally ignoring it is bound to screw up our count of | |
| 7492 | blocks, and that it turn will completely screw up the the labels we will | |
| 7493 | reference in subsequent DW_AT_low_pc and DW_AT_high_pc attributes (for | |
| 7494 | subsequent blocks). (It's too bad that BLOCK nodes don't carry their | |
| 7495 | own sequence numbers with them!) */ | |
| 7496 | if (DECL_IGNORED_P (decl)) | |
| 7497 | { | |
| 7498 | if (TREE_CODE (decl) == FUNCTION_DECL | |
| 7499 | && DECL_INITIAL (decl) != NULL) | |
| 7500 | { | |
| 7501 | abort (); | |
| 7502 | } | |
| 7503 | return; | |
| 7504 | } | |
| 7505 | ||
| 7506 | switch (TREE_CODE (decl)) | |
| 7507 | { | |
| 7508 | case FUNCTION_DECL: | |
| 7509 | /* Ignore this FUNCTION_DECL if it refers to a builtin declaration of a | |
| 7510 | builtin function. Explicit programmer-supplied declarations of | |
| 7511 | these same functions should NOT be ignored however. */ | |
| 7512 | if (DECL_EXTERNAL (decl) && DECL_FUNCTION_CODE (decl)) | |
| 7513 | { | |
| 7514 | return; | |
| 7515 | } | |
| 7516 | ||
| 7517 | /* What we would really like to do here is to filter out all mere | |
| 7518 | file-scope declarations of file-scope functions which are never | |
| 7519 | referenced later within this translation unit (and keep all of ones | |
| 7520 | that *are* referenced later on) but we aren't clarvoiant, so we have | |
| 7521 | no idea which functions will be referenced in the future (i.e. later | |
| 7522 | on within the current translation unit). So here we just ignore all | |
| 7523 | file-scope function declarations which are not also definitions. If | |
| 7524 | and when the debugger needs to know something about these funcstion, | |
| 7525 | it wil have to hunt around and find the DWARF information associated | |
| 7526 | with the definition of the function. Note that we can't just check | |
| 7527 | `DECL_EXTERNAL' to find out which FUNCTION_DECL nodes represent | |
| 7528 | definitions and which ones represent mere declarations. We have to | |
| 7529 | check `DECL_INITIAL' instead. That's because the C front-end | |
| 7530 | supports some weird semantics for "extern inline" function | |
| 7531 | definitions. These can get inlined within the current translation | |
| 7532 | unit (an thus, we need to generate DWARF info for their abstract | |
| 7533 | instances so that the DWARF info for the concrete inlined instances | |
| 7534 | can have something to refer to) but the compiler never generates any | |
| 7535 | out-of-lines instances of such things (despite the fact that they | |
| 7536 | *are* definitions). The important point is that the C front-end | |
| 7537 | marks these "extern inline" functions as DECL_EXTERNAL, but we need | |
| 273dbe67 | 7538 | to generate DWARF for them anyway. Note that the C++ front-end also |
| a3f97cbb JW |
7539 | plays some similar games for inline function definitions appearing |
| 7540 | within include files which also contain | |
| 7541 | `#pragma interface' pragmas. */ | |
| 7542 | if (DECL_INITIAL (decl) == NULL_TREE) | |
| 7543 | { | |
| 7544 | return; | |
| 7545 | } | |
| 7546 | break; | |
| 7547 | ||
| 7548 | case VAR_DECL: | |
| 7549 | /* Ignore this VAR_DECL if it refers to a file-scope extern data object | |
| 7550 | declaration and if the declaration was never even referenced from | |
| 7551 | within this entire compilation unit. We suppress these DIEs in | |
| 7552 | order to save space in the .debug section (by eliminating entries | |
| 7553 | which are probably useless). Note that we must not suppress | |
| 7554 | block-local extern declarations (whether used or not) because that | |
| 7555 | would screw-up the debugger's name lookup mechanism and cause it to | |
| 7556 | miss things which really ought to be in scope at a given point. */ | |
| 7557 | if (DECL_EXTERNAL (decl) && !TREE_USED (decl)) | |
| 7558 | { | |
| 7559 | return; | |
| 7560 | } | |
| 7561 | ||
| 7562 | /* If we are in terse mode, don't generate any DIEs to represent any | |
| 7563 | variable declarations or definitions. */ | |
| 7564 | if (debug_info_level <= DINFO_LEVEL_TERSE) | |
| 7565 | { | |
| 7566 | return; | |
| 7567 | } | |
| 7568 | break; | |
| 7569 | ||
| 7570 | case TYPE_DECL: | |
| 7571 | /* Don't bother trying to generate any DIEs to represent any of the | |
| a9d38797 JM |
7572 | normal built-in types for the language we are compiling. */ |
| 7573 | if (DECL_SOURCE_LINE (decl) == 0) | |
| 7574 | return; | |
| a3f97cbb JW |
7575 | |
| 7576 | /* If we are in terse mode, don't generate any DIEs to represent any | |
| 4927276d | 7577 | actual typedefs. */ |
| a3f97cbb | 7578 | if (debug_info_level <= DINFO_LEVEL_TERSE) |
| 4927276d | 7579 | return; |
| a3f97cbb JW |
7580 | break; |
| 7581 | ||
| 7582 | default: | |
| 7583 | return; | |
| 7584 | } | |
| 7585 | ||
| a3f97cbb JW |
7586 | gen_decl_die (decl, comp_unit_die); |
| 7587 | ||
| 7588 | if (TREE_CODE (decl) == FUNCTION_DECL | |
| 7589 | && DECL_INITIAL (decl) != NULL) | |
| 7590 | { | |
| 7591 | current_funcdef_number++; | |
| 7592 | } | |
| 7593 | ||
| 7594 | } | |
| 7595 | ||
| 7596 | /* Output a marker (i.e. a label) for the beginning of the generated code for | |
| 7597 | a lexical block. */ | |
| 7598 | void | |
| 9a666dda | 7599 | dwarf2out_begin_block (blocknum) |
| a3f97cbb JW |
7600 | register unsigned blocknum; |
| 7601 | { | |
| a3f97cbb | 7602 | function_section (current_function_decl); |
| 5c90448c | 7603 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum); |
| a3f97cbb JW |
7604 | } |
| 7605 | ||
| 7606 | /* Output a marker (i.e. a label) for the end of the generated code for a | |
| 7607 | lexical block. */ | |
| 7608 | void | |
| 9a666dda | 7609 | dwarf2out_end_block (blocknum) |
| a3f97cbb JW |
7610 | register unsigned blocknum; |
| 7611 | { | |
| a3f97cbb | 7612 | function_section (current_function_decl); |
| 5c90448c | 7613 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum); |
| a3f97cbb JW |
7614 | } |
| 7615 | ||
| 7616 | /* Output a marker (i.e. a label) at a point in the assembly code which | |
| 7617 | corresponds to a given source level label. */ | |
| 7618 | void | |
| 9a666dda | 7619 | dwarf2out_label (insn) |
| a3f97cbb JW |
7620 | register rtx insn; |
| 7621 | { | |
| 7622 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 7623 | if (debug_info_level >= DINFO_LEVEL_NORMAL) | |
| 7624 | { | |
| 7625 | function_section (current_function_decl); | |
| 5c90448c JM |
7626 | sprintf (label, INSN_LABEL_FMT, current_funcdef_number); |
| 7627 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, label, | |
| 7628 | (unsigned) INSN_UID (insn)); | |
| a3f97cbb JW |
7629 | } |
| 7630 | } | |
| 7631 | ||
| d291dd49 JM |
7632 | /* Output a marker (i.e. a label) for the beginning of a function, before |
| 7633 | the prologue. */ | |
| a3f97cbb | 7634 | void |
| 9a666dda | 7635 | dwarf2out_begin_prologue () |
| a3f97cbb JW |
7636 | { |
| 7637 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| a3f97cbb | 7638 | register dw_fde_ref fde; |
| a3f97cbb JW |
7639 | |
| 7640 | function_section (current_function_decl); | |
| 5c90448c JM |
7641 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL, |
| 7642 | current_funcdef_number); | |
| a3f97cbb JW |
7643 | ASM_OUTPUT_LABEL (asm_out_file, label); |
| 7644 | ||
| 7645 | /* Expand the fde table if necessary. */ | |
| 7646 | if (fde_table_in_use == fde_table_allocated) | |
| 7647 | { | |
| 7648 | fde_table_allocated += FDE_TABLE_INCREMENT; | |
| 7649 | fde_table = (dw_fde_ref) xrealloc (fde_table, | |
| 7650 | fde_table_allocated * sizeof (dw_fde_node)); | |
| 7651 | } | |
| 7652 | ||
| 7653 | /* Record the FDE associated with this function. */ | |
| 7654 | current_funcdef_fde = fde_table_in_use; | |
| 7655 | ||
| 7656 | /* Add the new FDE at the end of the fde_table. */ | |
| 7657 | fde = &fde_table[fde_table_in_use++]; | |
| 7d4440be | 7658 | fde->dw_fde_begin = xstrdup (label); |
| d291dd49 | 7659 | fde->dw_fde_end_prolog = NULL; |
| a3f97cbb JW |
7660 | fde->dw_fde_begin_epilogue = NULL; |
| 7661 | fde->dw_fde_end = NULL; | |
| 7662 | fde->dw_fde_cfi = NULL; | |
| d291dd49 JM |
7663 | } |
| 7664 | ||
| 7665 | /* Output a marker (i.e. a label) for the point in the generated code where | |
| 7666 | the real body of the function begins (after parameters have been moved to | |
| 7667 | their home locations). */ | |
| 7668 | void | |
| 9a666dda | 7669 | dwarf2out_begin_function () |
| d291dd49 JM |
7670 | { |
| 7671 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 7672 | register long int offset; | |
| 7673 | register dw_fde_ref fde; | |
| 7674 | register dw_cfi_ref cfi; | |
| 7675 | ||
| 7676 | function_section (current_function_decl); | |
| 5c90448c JM |
7677 | ASM_GENERATE_INTERNAL_LABEL (label, BODY_BEGIN_LABEL, |
| 7678 | current_funcdef_number); | |
| d291dd49 JM |
7679 | ASM_OUTPUT_LABEL (asm_out_file, label); |
| 7680 | ||
| 7681 | /* Record the end-of-prolog location in the FDE. */ | |
| 7682 | fde = &fde_table[fde_table_in_use - 1]; | |
| 7683 | fde->dw_fde_end_prolog = xstrdup (label); | |
| a3f97cbb JW |
7684 | |
| 7685 | #ifdef MIPS_DEBUGGING_INFO | |
| 7686 | ||
| a3f97cbb JW |
7687 | /* Set the location counter to the end of the function prolog. */ |
| 7688 | cfi = new_cfi (); | |
| 7689 | cfi->dw_cfi_opc = DW_CFA_advance_loc4; | |
| 7690 | cfi->dw_cfi_oprnd1.dw_cfi_addr = xstrdup (label); | |
| 7691 | add_cfi (&fde->dw_fde_cfi, cfi); | |
| 7692 | ||
| c8cc5c4a JM |
7693 | /* Define the CFA as an offset from either the frame pointer |
| 7694 | or the stack pointer. */ | |
| a3f97cbb JW |
7695 | cfi = new_cfi (); |
| 7696 | cfi->dw_cfi_opc = DW_CFA_def_cfa; | |
| 810429b7 | 7697 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num |
| c8cc5c4a JM |
7698 | = DWARF_FRAME_REGNUM (frame_pointer_needed ? FRAME_POINTER_REGNUM |
| 7699 | : STACK_POINTER_REGNUM); | |
| a3f97cbb JW |
7700 | offset = current_frame_info.total_size; |
| 7701 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; | |
| 7702 | add_cfi (&fde->dw_fde_cfi, cfi); | |
| 7703 | ||
| 7704 | /* record the frame size for later definition of the DW_AT_frame_base | |
| 7705 | attribute. */ | |
| 7706 | current_funcdef_frame_size = offset; | |
| 7707 | ||
| 7708 | /* Define the rule for restoring the stack pointer. */ | |
| 7709 | if (frame_pointer_needed) | |
| 7710 | { | |
| 7711 | /* Restore the stack register from the frame pointer. */ | |
| 7712 | cfi = new_cfi (); | |
| 7713 | cfi->dw_cfi_opc = DW_CFA_register; | |
| 810429b7 | 7714 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num |
| c8cc5c4a | 7715 | = DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM); |
| 810429b7 | 7716 | cfi->dw_cfi_oprnd2.dw_cfi_reg_num |
| c8cc5c4a | 7717 | = DWARF_FRAME_REGNUM (FRAME_POINTER_REGNUM); |
| a3f97cbb JW |
7718 | add_cfi (&fde->dw_fde_cfi, cfi); |
| 7719 | } | |
| 7720 | ||
| 7721 | /* If RA is saved on the stack, define it here. */ | |
| 7722 | if (regs_ever_live[31]) | |
| 7723 | { | |
| 7724 | offset = current_frame_info.gp_save_offset / DWARF_CIE_DATA_ALIGNMENT; | |
| 7725 | assert (offset >= 0); | |
| 7726 | cfi = new_cfi (); | |
| 7727 | cfi->dw_cfi_opc = DW_CFA_offset_extended; | |
| c8cc5c4a | 7728 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num = DWARF_FRAME_RETURN_COLUMN; |
| a3f97cbb JW |
7729 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
| 7730 | add_cfi (&fde->dw_fde_cfi, cfi); | |
| 7731 | } | |
| 7732 | ||
| 7733 | /* If FP is saved on the stack, define it here. */ | |
| 7734 | if (current_frame_info.mask & (1 << 30)) | |
| 7735 | { | |
| 7736 | offset = (current_frame_info.gp_save_offset | |
| ba7b35df | 7737 | - (((current_frame_info.mask >> 31) & 1) * UNITS_PER_WORD)) |
| a3f97cbb JW |
7738 | / DWARF_CIE_DATA_ALIGNMENT; |
| 7739 | assert (offset >= 0); | |
| 7740 | cfi = new_cfi (); | |
| 7741 | cfi->dw_cfi_opc = DW_CFA_offset; | |
| 810429b7 | 7742 | cfi->dw_cfi_oprnd1.dw_cfi_reg_num |
| c8cc5c4a | 7743 | = DWARF_FRAME_REGNUM (FRAME_POINTER_REGNUM); |
| a3f97cbb JW |
7744 | cfi->dw_cfi_oprnd2.dw_cfi_offset = offset; |
| 7745 | add_cfi (&fde->dw_fde_cfi, cfi); | |
| 7746 | } | |
| 7747 | ||
| 7748 | #endif | |
| 7749 | ||
| 7750 | } | |
| 7751 | ||
| 7752 | /* Output a marker (i.e. a label) for the point in the generated code where | |
| 7753 | the real body of the function ends (just before the epilogue code). */ | |
| 7754 | void | |
| 9a666dda | 7755 | dwarf2out_end_function () |
| a3f97cbb JW |
7756 | { |
| 7757 | dw_fde_ref fde; | |
| 7758 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 7759 | function_section (current_function_decl); | |
| 5c90448c | 7760 | ASM_GENERATE_INTERNAL_LABEL (label, BODY_END_LABEL, current_funcdef_number); |
| a3f97cbb JW |
7761 | ASM_OUTPUT_LABEL (asm_out_file, label); |
| 7762 | /* Record the ending code location in the FDE. */ | |
| 7763 | fde = &fde_table[fde_table_in_use - 1]; | |
| 7764 | fde->dw_fde_begin_epilogue = xstrdup(label); | |
| 7765 | } | |
| 7766 | ||
| 7767 | /* Output a marker (i.e. a label) for the absolute end of the generated code | |
| 7768 | for a function definition. This gets called *after* the epilogue code has | |
| 7769 | been generated. */ | |
| 7770 | void | |
| 9a666dda | 7771 | dwarf2out_end_epilogue () |
| a3f97cbb JW |
7772 | { |
| 7773 | dw_fde_ref fde; | |
| 7774 | char label[MAX_ARTIFICIAL_LABEL_BYTES]; | |
| 7775 | /* Output a label to mark the endpoint of the code generated for this | |
| 7776 | function. */ | |
| 5c90448c | 7777 | ASM_GENERATE_INTERNAL_LABEL (label, FUNC_END_LABEL, current_funcdef_number); |
| a3f97cbb JW |
7778 | ASM_OUTPUT_LABEL (asm_out_file, label); |
| 7779 | fde = &fde_table[fde_table_in_use - 1]; | |
| 7780 | fde->dw_fde_end = xstrdup (label); | |
| 7781 | } | |
| 7782 | ||
| 7783 | /* Lookup a filename (in the list of filenames that we know about here in | |
| 9a666dda | 7784 | dwarf2out.c) and return its "index". The index of each (known) filename is |
| a3f97cbb JW |
7785 | just a unique number which is associated with only that one filename. |
| 7786 | We need such numbers for the sake of generating labels | |
| 7787 | (in the .debug_sfnames section) and references to those | |
| 7788 | files numbers (in the .debug_srcinfo and.debug_macinfo sections). | |
| 7789 | If the filename given as an argument is not found in our current list, | |
| 7790 | add it to the list and assign it the next available unique index number. | |
| 7791 | In order to speed up searches, we remember the index of the filename | |
| 7792 | was looked up last. This handles the majority of all searches. */ | |
| 7793 | static unsigned | |
| 7794 | lookup_filename (file_name) | |
| 7795 | char *file_name; | |
| 7796 | { | |
| 7797 | static unsigned last_file_lookup_index = 0; | |
| 7798 | register char *fn; | |
| 7799 | register unsigned i; | |
| 7800 | ||
| 7801 | /* Check to see if the file name that was searched on the previous call | |
| 7802 | matches this file name. If so, return the index. */ | |
| 7803 | if (last_file_lookup_index != 0) | |
| 7804 | { | |
| 7805 | fn = file_table[last_file_lookup_index]; | |
| 7806 | if (strcmp (file_name, fn) == 0) | |
| 7807 | { | |
| 7808 | return last_file_lookup_index; | |
| 7809 | } | |
| 7810 | } | |
| 7811 | ||
| 7812 | /* Didn't match the previous lookup, search the table */ | |
| 7813 | for (i = 1; i < file_table_in_use; ++i) | |
| 7814 | { | |
| 7815 | fn = file_table[i]; | |
| 7816 | if (strcmp (file_name, fn) == 0) | |
| 7817 | { | |
| 7818 | last_file_lookup_index = i; | |
| 7819 | return i; | |
| 7820 | } | |
| 7821 | } | |
| 7822 | ||
| 7823 | /* Prepare to add a new table entry by making sure there is enough space in | |
| 7824 | the table to do so. If not, expand the current table. */ | |
| 7825 | if (file_table_in_use == file_table_allocated) | |
| 7826 | { | |
| 7827 | file_table_allocated += FILE_TABLE_INCREMENT; | |
| 7828 | file_table | |
| 7829 | = (char **) | |
| 7830 | xrealloc (file_table, file_table_allocated * sizeof (char *)); | |
| 7831 | } | |
| 7832 | ||
| 7833 | /* add the new entry to the end of the filename table. */ | |
| 7834 | file_table[file_table_in_use] = xstrdup (file_name); | |
| 7835 | last_file_lookup_index = file_table_in_use++; | |
| 7836 | return last_file_lookup_index; | |
| 7837 | } | |
| 7838 | ||
| 7839 | /* Output a label to mark the beginning of a source code line entry | |
| 7840 | and record information relating to this source line, in | |
| 7841 | 'line_info_table' for later output of the .debug_line section. */ | |
| 7842 | void | |
| 9a666dda | 7843 | dwarf2out_line (filename, line) |
| a3f97cbb JW |
7844 | register char *filename; |
| 7845 | register unsigned line; | |
| 7846 | { | |
| a3f97cbb JW |
7847 | if (debug_info_level >= DINFO_LEVEL_NORMAL) |
| 7848 | { | |
| 7849 | function_section (current_function_decl); | |
| a3f97cbb | 7850 | |
| e90b62db | 7851 | if (DECL_SECTION_NAME (current_function_decl)) |
| a3f97cbb | 7852 | { |
| e90b62db | 7853 | register dw_separate_line_info_ref line_info; |
| 5c90448c JM |
7854 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL, |
| 7855 | separate_line_info_table_in_use); | |
| e90b62db JM |
7856 | fputc ('\n', asm_out_file); |
| 7857 | ||
| 7858 | /* expand the line info table if necessary */ | |
| 7859 | if (separate_line_info_table_in_use | |
| 7860 | == separate_line_info_table_allocated) | |
| 7861 | { | |
| 7862 | separate_line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
| 7863 | separate_line_info_table | |
| 7864 | = (dw_separate_line_info_ref) xrealloc | |
| 7865 | (separate_line_info_table, | |
| 7866 | separate_line_info_table_allocated | |
| 7867 | * sizeof (dw_separate_line_info_entry)); | |
| 7868 | } | |
| 7869 | /* add the new entry at the end of the line_info_table. */ | |
| 7870 | line_info | |
| 7871 | = &separate_line_info_table[separate_line_info_table_in_use++]; | |
| 7872 | line_info->dw_file_num = lookup_filename (filename); | |
| 7873 | line_info->dw_line_num = line; | |
| 7874 | line_info->function = current_funcdef_number; | |
| 7875 | } | |
| 7876 | else | |
| 7877 | { | |
| 7878 | register dw_line_info_ref line_info; | |
| 5c90448c JM |
7879 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL, |
| 7880 | line_info_table_in_use); | |
| e90b62db JM |
7881 | fputc ('\n', asm_out_file); |
| 7882 | ||
| 7883 | /* expand the line info table if necessary */ | |
| 7884 | if (line_info_table_in_use == line_info_table_allocated) | |
| 7885 | { | |
| 7886 | line_info_table_allocated += LINE_INFO_TABLE_INCREMENT; | |
| 7887 | line_info_table | |
| 7888 | = (dw_line_info_ref) xrealloc | |
| 7889 | (line_info_table, | |
| 7890 | line_info_table_allocated * sizeof (dw_line_info_entry)); | |
| 7891 | } | |
| 7892 | /* add the new entry at the end of the line_info_table. */ | |
| 7893 | line_info = &line_info_table[line_info_table_in_use++]; | |
| 7894 | line_info->dw_file_num = lookup_filename (filename); | |
| 7895 | line_info->dw_line_num = line; | |
| a3f97cbb | 7896 | } |
| a3f97cbb JW |
7897 | } |
| 7898 | } | |
| 7899 | ||
| 7900 | /* Record the beginning of a new source file, for later output | |
| 7901 | of the .debug_macinfo section. At present, unimplemented. */ | |
| 7902 | void | |
| 9a666dda | 7903 | dwarf2out_start_source_file (filename) |
| a3f97cbb JW |
7904 | register char *filename; |
| 7905 | { | |
| 7906 | } | |
| 7907 | ||
| 9a666dda | 7908 | /* Record the end of a source file, for later output |
| a3f97cbb JW |
7909 | of the .debug_macinfo section. At present, unimplemented. */ |
| 7910 | void | |
| 9a666dda | 7911 | dwarf2out_end_source_file () |
| a3f97cbb JW |
7912 | { |
| 7913 | } | |
| 7914 | ||
| 7915 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
| 7916 | the tail part of the directive line, i.e. the part which is past the | |
| 7917 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
| 7918 | void | |
| 9a666dda | 7919 | dwarf2out_define (lineno, buffer) |
| a3f97cbb JW |
7920 | register unsigned lineno; |
| 7921 | register char *buffer; | |
| 7922 | { | |
| 7923 | static int initialized = 0; | |
| 7924 | if (!initialized) | |
| 7925 | { | |
| 9a666dda | 7926 | dwarf2out_start_source_file (primary_filename); |
| a3f97cbb JW |
7927 | initialized = 1; |
| 7928 | } | |
| 7929 | } | |
| 7930 | ||
| 7931 | /* Called from check_newline in c-parse.y. The `buffer' parameter contains | |
| 7932 | the tail part of the directive line, i.e. the part which is past the | |
| 7933 | initial whitespace, #, whitespace, directive-name, whitespace part. */ | |
| 7934 | void | |
| 9a666dda | 7935 | dwarf2out_undef (lineno, buffer) |
| a3f97cbb JW |
7936 | register unsigned lineno; |
| 7937 | register char *buffer; | |
| 7938 | { | |
| 7939 | } | |
| 7940 | ||
| 7941 | /* Set up for Dwarf output at the start of compilation. */ | |
| 7942 | void | |
| 9a666dda | 7943 | dwarf2out_init (asm_out_file, main_input_filename) |
| a3f97cbb JW |
7944 | register FILE *asm_out_file; |
| 7945 | register char *main_input_filename; | |
| 7946 | { | |
| a3f97cbb JW |
7947 | /* Remember the name of the primary input file. */ |
| 7948 | primary_filename = main_input_filename; | |
| 7949 | ||
| 7950 | /* Allocate the initial hunk of the file_table. */ | |
| 7951 | file_table = (char **) xmalloc (FILE_TABLE_INCREMENT * sizeof (char *)); | |
| 7952 | bzero (file_table, FILE_TABLE_INCREMENT * sizeof (char *)); | |
| 7953 | file_table_allocated = FILE_TABLE_INCREMENT; | |
| 7954 | /* skip the first entry - file numbers begin at 1 */ | |
| 7955 | file_table_in_use = 1; | |
| 7956 | ||
| 7957 | /* Allocate the initial hunk of the type_die_table. */ | |
| 7958 | type_die_table | |
| 7959 | = (dw_die_ref *) xmalloc (TYPE_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
| 7960 | bzero (type_die_table, TYPE_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
| 7961 | type_die_table_allocated = TYPE_DIE_TABLE_INCREMENT; | |
| 7962 | type_die_table_in_use = 0; | |
| 7963 | ||
| 7964 | /* Allocate the initial hunk of the decl_die_table. */ | |
| 7965 | decl_die_table | |
| 7966 | = (dw_die_ref *) xmalloc (DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
| 7967 | bzero (decl_die_table, DECL_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
| 7968 | decl_die_table_allocated = DECL_DIE_TABLE_INCREMENT; | |
| 7969 | decl_die_table_in_use = 0; | |
| 7970 | ||
| 7971 | /* Allocate the initial hunk of the decl_scope_table. */ | |
| 7972 | decl_scope_table | |
| 7973 | = (tree *) xmalloc (DECL_SCOPE_TABLE_INCREMENT * sizeof (tree)); | |
| 7974 | bzero (decl_scope_table, DECL_SCOPE_TABLE_INCREMENT * sizeof (tree)); | |
| 7975 | decl_scope_table_allocated = DECL_SCOPE_TABLE_INCREMENT; | |
| 7976 | decl_scope_depth = 0; | |
| 7977 | ||
| 7978 | /* Allocate the initial hunk of the abbrev_die_table. */ | |
| 7979 | abbrev_die_table | |
| 7980 | = (dw_die_ref *) xmalloc (ABBREV_DIE_TABLE_INCREMENT | |
| 7981 | * sizeof (dw_die_ref)); | |
| 7982 | bzero (abbrev_die_table, ABBREV_DIE_TABLE_INCREMENT * sizeof (dw_die_ref)); | |
| 7983 | abbrev_die_table_allocated = ABBREV_DIE_TABLE_INCREMENT; | |
| 7984 | /* zero-th entry is allocated, but unused */ | |
| 7985 | abbrev_die_table_in_use = 1; | |
| 7986 | ||
| 7987 | /* Allocate the initial hunk of the line_info_table. */ | |
| 7988 | line_info_table | |
| 7989 | = (dw_line_info_ref) xmalloc (LINE_INFO_TABLE_INCREMENT | |
| 7990 | * sizeof (dw_line_info_entry)); | |
| 7991 | bzero (line_info_table, LINE_INFO_TABLE_INCREMENT | |
| 7992 | * sizeof (dw_line_info_entry)); | |
| 7993 | line_info_table_allocated = LINE_INFO_TABLE_INCREMENT; | |
| 7994 | /* zero-th entry is allocated, but unused */ | |
| 7995 | line_info_table_in_use = 1; | |
| 7996 | ||
| 7997 | /* Allocate the initial hunk of the fde_table. */ | |
| 7998 | fde_table = (dw_fde_ref) xmalloc (FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
| 7999 | bzero (fde_table, FDE_TABLE_INCREMENT * sizeof (dw_fde_node)); | |
| 8000 | fde_table_allocated = FDE_TABLE_INCREMENT; | |
| 8001 | fde_table_in_use = 0; | |
| 8002 | ||
| a3f97cbb JW |
8003 | /* Generate the initial DIE for the .debug section. Note that the (string) |
| 8004 | value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE | |
| 8005 | will (typically) be a relative pathname and that this pathname should be | |
| 8006 | taken as being relative to the directory from which the compiler was | |
| 8007 | invoked when the given (base) source file was compiled. */ | |
| 8008 | gen_compile_unit_die (main_input_filename); | |
| 8009 | ||
| 5c90448c | 8010 | ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0); |
| a3f97cbb JW |
8011 | } |
| 8012 | ||
| 8013 | /* Output stuff that dwarf requires at the end of every file, | |
| 8014 | and generate the DWARF-2 debugging info. */ | |
| 8015 | void | |
| 9a666dda | 8016 | dwarf2out_finish () |
| a3f97cbb | 8017 | { |
| a3f97cbb JW |
8018 | /* Traverse the DIE tree and add sibling attributes to those DIE's |
| 8019 | that have children. */ | |
| 8020 | add_sibling_attributes (comp_unit_die); | |
| 8021 | ||
| 8022 | /* Output a terminator label for the .text section. */ | |
| 8023 | fputc ('\n', asm_out_file); | |
| 8024 | ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION); | |
| 5c90448c | 8025 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0); |
| a3f97cbb | 8026 | |
| bdb669cb | 8027 | #if 0 |
| a3f97cbb JW |
8028 | /* Output a terminator label for the .data section. */ |
| 8029 | fputc ('\n', asm_out_file); | |
| 8030 | ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION); | |
| 5c90448c | 8031 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0); |
| a3f97cbb JW |
8032 | |
| 8033 | /* Output a terminator label for the .bss section. */ | |
| 8034 | fputc ('\n', asm_out_file); | |
| 8035 | ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION); | |
| 5c90448c | 8036 | ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0); |
| bdb669cb | 8037 | #endif |
| a3f97cbb | 8038 | |
| e90b62db JM |
8039 | /* Output the source line correspondence table. */ |
| 8040 | if (line_info_table_in_use > 1 || separate_line_info_table_in_use) | |
| 8041 | { | |
| 8042 | fputc ('\n', asm_out_file); | |
| 8043 | ASM_OUTPUT_SECTION (asm_out_file, LINE_SECTION); | |
| 8044 | output_line_info (); | |
| 8045 | ||
| 8046 | /* We can only use the low/high_pc attributes if all of the code | |
| 8047 | was in .text. */ | |
| 8048 | if (separate_line_info_table_in_use == 0) | |
| 8049 | { | |
| 8050 | add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, TEXT_SECTION); | |
| 5c90448c | 8051 | add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label); |
| e90b62db JM |
8052 | } |
| 8053 | add_AT_section_offset (comp_unit_die, DW_AT_stmt_list, LINE_SECTION); | |
| 8054 | } | |
| 8055 | ||
| a3f97cbb JW |
8056 | /* Output the abbreviation table. */ |
| 8057 | fputc ('\n', asm_out_file); | |
| 8058 | ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION); | |
| 8059 | build_abbrev_table (comp_unit_die); | |
| 8060 | output_abbrev_section (); | |
| 8061 | ||
| a3f97cbb JW |
8062 | /* Initialize the beginning DIE offset - and calculate sizes/offsets. */ |
| 8063 | next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE; | |
| 8064 | calc_die_sizes (comp_unit_die); | |
| 8065 | ||
| 8066 | /* Initialize the beginning FDE offset - and calculate sizes/offsets. */ | |
| 8067 | next_fde_offset = DWARF_CIE_SIZE; | |
| 8068 | calc_fde_sizes (); | |
| 8069 | ||
| 8070 | /* Output debugging information. */ | |
| 8071 | fputc ('\n', asm_out_file); | |
| 8072 | ASM_OUTPUT_SECTION (asm_out_file, DEBUG_SECTION); | |
| 8073 | output_compilation_unit_header (); | |
| 8074 | output_die (comp_unit_die); | |
| 8075 | ||
| d291dd49 JM |
8076 | if (pubname_table_in_use) |
| 8077 | { | |
| 8078 | /* Output public names table. */ | |
| 8079 | fputc ('\n', asm_out_file); | |
| 8080 | ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION); | |
| 8081 | output_pubnames (); | |
| 8082 | } | |
| 8083 | ||
| a3f97cbb JW |
8084 | if (fde_table_in_use) |
| 8085 | { | |
| 8086 | /* Output call frame information. */ | |
| 8087 | fputc ('\n', asm_out_file); | |
| 8088 | ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION); | |
| 8089 | output_call_frame_info (); | |
| 8090 | ||
| a3f97cbb JW |
8091 | /* Output the address range information. */ |
| 8092 | fputc ('\n', asm_out_file); | |
| 8093 | ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION); | |
| 8094 | output_aranges (); | |
| 8095 | } | |
| 8096 | } | |
| 9a666dda | 8097 | #endif /* DWARF2_DEBUGGING_INFO */ |