Mercurial > hg > CbC > CbC_gcc
annotate gcc/dwarf2asm.c @ 59:5b5b9ea5b220
fix
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 15 Feb 2010 17:22:24 +0900 |
| parents | 77e2b8dfacca |
| children | b7f97abdc517 |
| rev | line source |
|---|---|
| 0 | 1 /* Dwarf2 assembler output helper routines. |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009 |
| 0 | 3 Free Software Foundation, Inc. |
| 4 | |
| 5 This file is part of GCC. | |
| 6 | |
| 7 GCC is free software; you can redistribute it and/or modify it under | |
| 8 the terms of the GNU General Public License as published by the Free | |
| 9 Software Foundation; either version 3, or (at your option) any later | |
| 10 version. | |
| 11 | |
| 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with GCC; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 | |
| 22 #include "config.h" | |
| 23 #include "system.h" | |
| 24 #include "coretypes.h" | |
| 25 #include "tm.h" | |
| 26 #include "flags.h" | |
| 27 #include "tree.h" | |
| 28 #include "rtl.h" | |
| 29 #include "output.h" | |
| 30 #include "target.h" | |
| 31 #include "dwarf2asm.h" | |
| 32 #include "dwarf2.h" | |
| 33 #include "splay-tree.h" | |
| 34 #include "ggc.h" | |
| 35 #include "tm_p.h" | |
| 36 | |
| 37 | |
| 38 /* How to start an assembler comment. */ | |
| 39 #ifndef ASM_COMMENT_START | |
| 40 #define ASM_COMMENT_START ";#" | |
| 41 #endif | |
| 42 | |
| 43 | |
| 44 /* Output an unaligned integer with the given value and size. Prefer not | |
| 45 to print a newline, since the caller may want to add a comment. */ | |
| 46 | |
| 47 void | |
| 48 dw2_assemble_integer (int size, rtx x) | |
| 49 { | |
| 50 const char *op = integer_asm_op (size, FALSE); | |
| 51 | |
| 52 if (op) | |
| 53 { | |
| 54 fputs (op, asm_out_file); | |
|
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77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
55 if (CONST_INT_P (x)) |
| 0 | 56 fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, |
| 57 (unsigned HOST_WIDE_INT) INTVAL (x)); | |
| 58 else | |
| 59 output_addr_const (asm_out_file, x); | |
| 60 } | |
| 61 else | |
| 62 assemble_integer (x, size, BITS_PER_UNIT, 1); | |
| 63 } | |
| 64 | |
| 65 | |
| 66 /* Output a value of a given size in target byte order. */ | |
| 67 | |
| 68 void | |
| 69 dw2_asm_output_data_raw (int size, unsigned HOST_WIDE_INT value) | |
| 70 { | |
| 71 unsigned char bytes[8]; | |
| 72 int i; | |
| 73 | |
| 74 for (i = 0; i < 8; ++i) | |
| 75 { | |
| 76 bytes[i] = value & 0xff; | |
| 77 value >>= 8; | |
| 78 } | |
| 79 | |
| 80 if (BYTES_BIG_ENDIAN) | |
| 81 { | |
| 82 for (i = size - 1; i > 0; --i) | |
| 83 fprintf (asm_out_file, "0x%x,", bytes[i]); | |
| 84 fprintf (asm_out_file, "0x%x", bytes[0]); | |
| 85 } | |
| 86 else | |
| 87 { | |
| 88 for (i = 0; i < size - 1; ++i) | |
| 89 fprintf (asm_out_file, "0x%x,", bytes[i]); | |
| 90 fprintf (asm_out_file, "0x%x", bytes[i]); | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 /* Output an immediate constant in a given SIZE in bytes. */ | |
| 95 | |
| 96 void | |
| 97 dw2_asm_output_data (int size, unsigned HOST_WIDE_INT value, | |
| 98 const char *comment, ...) | |
| 99 { | |
| 100 va_list ap; | |
| 101 const char *op = integer_asm_op (size, FALSE); | |
| 102 | |
| 103 va_start (ap, comment); | |
| 104 | |
| 105 if (size * 8 < HOST_BITS_PER_WIDE_INT) | |
| 106 value &= ~(~(unsigned HOST_WIDE_INT) 0 << (size * 8)); | |
| 107 | |
| 108 if (op) | |
| 109 fprintf (asm_out_file, "%s" HOST_WIDE_INT_PRINT_HEX, op, value); | |
| 110 else | |
| 111 assemble_integer (GEN_INT (value), size, BITS_PER_UNIT, 1); | |
| 112 | |
| 113 if (flag_debug_asm && comment) | |
| 114 { | |
| 115 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 116 vfprintf (asm_out_file, comment, ap); | |
| 117 } | |
| 118 fputc ('\n', asm_out_file); | |
| 119 | |
| 120 va_end (ap); | |
| 121 } | |
| 122 | |
| 123 /* Output the difference between two symbols in a given size. */ | |
| 124 /* ??? There appear to be assemblers that do not like such | |
| 125 subtraction, but do support ASM_SET_OP. It's unfortunately | |
| 126 impossible to do here, since the ASM_SET_OP for the difference | |
| 127 symbol must appear after both symbols are defined. */ | |
| 128 | |
| 129 void | |
| 130 dw2_asm_output_delta (int size, const char *lab1, const char *lab2, | |
| 131 const char *comment, ...) | |
| 132 { | |
| 133 va_list ap; | |
| 134 | |
| 135 va_start (ap, comment); | |
| 136 | |
| 137 #ifdef ASM_OUTPUT_DWARF_DELTA | |
| 138 ASM_OUTPUT_DWARF_DELTA (asm_out_file, size, lab1, lab2); | |
| 139 #else | |
| 140 dw2_assemble_integer (size, | |
| 141 gen_rtx_MINUS (Pmode, | |
| 142 gen_rtx_SYMBOL_REF (Pmode, lab1), | |
| 143 gen_rtx_SYMBOL_REF (Pmode, lab2))); | |
| 144 #endif | |
| 145 if (flag_debug_asm && comment) | |
| 146 { | |
| 147 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 148 vfprintf (asm_out_file, comment, ap); | |
| 149 } | |
| 150 fputc ('\n', asm_out_file); | |
| 151 | |
| 152 va_end (ap); | |
| 153 } | |
| 154 | |
| 155 /* Output a section-relative reference to a LABEL, which was placed in | |
| 156 BASE. In general this can only be done for debugging symbols. | |
| 157 E.g. on most targets with the GNU linker, this is accomplished with | |
| 158 a direct reference and the knowledge that the debugging section | |
| 159 will be placed at VMA 0. Some targets have special relocations for | |
| 160 this that we must use. */ | |
| 161 | |
| 162 void | |
| 163 dw2_asm_output_offset (int size, const char *label, | |
| 164 section *base ATTRIBUTE_UNUSED, | |
| 165 const char *comment, ...) | |
| 166 { | |
| 167 va_list ap; | |
| 168 | |
| 169 va_start (ap, comment); | |
| 170 | |
| 171 #ifdef ASM_OUTPUT_DWARF_OFFSET | |
| 172 ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label, base); | |
| 173 #else | |
| 174 dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label)); | |
| 175 #endif | |
| 176 | |
| 177 if (flag_debug_asm && comment) | |
| 178 { | |
| 179 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 180 vfprintf (asm_out_file, comment, ap); | |
| 181 } | |
| 182 fputc ('\n', asm_out_file); | |
| 183 | |
| 184 va_end (ap); | |
| 185 } | |
| 186 | |
| 187 #if 0 | |
| 188 | |
| 189 /* Output a self-relative reference to a label, possibly in a | |
| 190 different section or object file. */ | |
| 191 | |
| 192 void | |
| 193 dw2_asm_output_pcrel (int size ATTRIBUTE_UNUSED, | |
| 194 const char *label ATTRIBUTE_UNUSED, | |
| 195 const char *comment, ...) | |
| 196 { | |
| 197 va_list ap; | |
| 198 | |
| 199 va_start (ap, comment); | |
| 200 | |
| 201 #ifdef ASM_OUTPUT_DWARF_PCREL | |
| 202 ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, label); | |
| 203 #else | |
| 204 dw2_assemble_integer (size, | |
| 205 gen_rtx_MINUS (Pmode, | |
| 206 gen_rtx_SYMBOL_REF (Pmode, label), | |
| 207 pc_rtx)); | |
| 208 #endif | |
| 209 | |
| 210 if (flag_debug_asm && comment) | |
| 211 { | |
| 212 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 213 vfprintf (asm_out_file, comment, ap); | |
| 214 } | |
| 215 fputc ('\n', asm_out_file); | |
| 216 | |
| 217 va_end (ap); | |
| 218 } | |
| 219 #endif /* 0 */ | |
| 220 | |
| 221 /* Output an absolute reference to a label. */ | |
| 222 | |
| 223 void | |
| 224 dw2_asm_output_addr (int size, const char *label, | |
| 225 const char *comment, ...) | |
| 226 { | |
| 227 va_list ap; | |
| 228 | |
| 229 va_start (ap, comment); | |
| 230 | |
| 231 dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label)); | |
| 232 | |
| 233 if (flag_debug_asm && comment) | |
| 234 { | |
| 235 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 236 vfprintf (asm_out_file, comment, ap); | |
| 237 } | |
| 238 fputc ('\n', asm_out_file); | |
| 239 | |
| 240 va_end (ap); | |
| 241 } | |
| 242 | |
| 243 /* Similar, but use an RTX expression instead of a text label. */ | |
| 244 | |
| 245 void | |
| 246 dw2_asm_output_addr_rtx (int size, rtx addr, | |
| 247 const char *comment, ...) | |
| 248 { | |
| 249 va_list ap; | |
| 250 | |
| 251 va_start (ap, comment); | |
| 252 | |
| 253 dw2_assemble_integer (size, addr); | |
| 254 | |
| 255 if (flag_debug_asm && comment) | |
| 256 { | |
| 257 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 258 vfprintf (asm_out_file, comment, ap); | |
| 259 } | |
| 260 fputc ('\n', asm_out_file); | |
| 261 | |
| 262 va_end (ap); | |
| 263 } | |
| 264 | |
| 265 /* Output the first ORIG_LEN characters of STR as a string. | |
| 266 If ORIG_LEN is equal to -1, ignore this parameter and output | |
| 267 the entire STR instead. | |
| 268 If COMMENT is not NULL and comments in the debug information | |
| 269 have been requested by the user, append the given COMMENT | |
| 270 to the generated output. */ | |
|
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77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
271 |
| 0 | 272 void |
| 273 dw2_asm_output_nstring (const char *str, size_t orig_len, | |
| 274 const char *comment, ...) | |
| 275 { | |
| 276 size_t i, len; | |
| 277 va_list ap; | |
| 278 | |
| 279 va_start (ap, comment); | |
| 280 | |
| 281 len = orig_len; | |
| 282 | |
| 283 if (len == (size_t) -1) | |
| 284 len = strlen (str); | |
| 285 | |
| 286 if (flag_debug_asm && comment) | |
| 287 { | |
| 288 fputs ("\t.ascii \"", asm_out_file); | |
| 289 for (i = 0; i < len; i++) | |
| 290 { | |
| 291 int c = str[i]; | |
| 292 if (c == '\"' || c == '\\') | |
| 293 fputc ('\\', asm_out_file); | |
| 294 if (ISPRINT(c)) | |
| 295 fputc (c, asm_out_file); | |
| 296 else | |
| 297 fprintf (asm_out_file, "\\%o", c); | |
| 298 } | |
| 299 fprintf (asm_out_file, "\\0\"\t%s ", ASM_COMMENT_START); | |
| 300 vfprintf (asm_out_file, comment, ap); | |
| 301 fputc ('\n', asm_out_file); | |
| 302 } | |
| 303 else | |
| 304 { | |
| 305 /* If an explicit length was given, we can't assume there | |
| 306 is a null termination in the string buffer. */ | |
| 307 if (orig_len == (size_t) -1) | |
| 308 len += 1; | |
| 309 ASM_OUTPUT_ASCII (asm_out_file, str, len); | |
| 310 if (orig_len != (size_t) -1) | |
| 311 assemble_integer (const0_rtx, 1, BITS_PER_UNIT, 1); | |
| 312 } | |
| 313 | |
| 314 va_end (ap); | |
| 315 } | |
| 316 | |
| 317 | |
| 318 /* Return the size of an unsigned LEB128 quantity. */ | |
| 319 | |
| 320 int | |
| 321 size_of_uleb128 (unsigned HOST_WIDE_INT value) | |
| 322 { | |
| 323 int size = 0; | |
| 324 | |
| 325 do | |
| 326 { | |
| 327 value >>= 7; | |
| 328 size += 1; | |
| 329 } | |
| 330 while (value != 0); | |
| 331 | |
| 332 return size; | |
| 333 } | |
| 334 | |
| 335 /* Return the size of a signed LEB128 quantity. */ | |
| 336 | |
| 337 int | |
| 338 size_of_sleb128 (HOST_WIDE_INT value) | |
| 339 { | |
| 340 int size = 0, byte; | |
| 341 | |
| 342 do | |
| 343 { | |
| 344 byte = (value & 0x7f); | |
| 345 value >>= 7; | |
| 346 size += 1; | |
| 347 } | |
| 348 while (!((value == 0 && (byte & 0x40) == 0) | |
| 349 || (value == -1 && (byte & 0x40) != 0))); | |
| 350 | |
| 351 return size; | |
| 352 } | |
| 353 | |
| 354 /* Given an encoding, return the number of bytes the format occupies. | |
| 355 This is only defined for fixed-size encodings, and so does not | |
| 356 include leb128. */ | |
| 357 | |
| 358 int | |
| 359 size_of_encoded_value (int encoding) | |
| 360 { | |
| 361 if (encoding == DW_EH_PE_omit) | |
| 362 return 0; | |
| 363 | |
| 364 switch (encoding & 0x07) | |
| 365 { | |
| 366 case DW_EH_PE_absptr: | |
| 367 return POINTER_SIZE / BITS_PER_UNIT; | |
| 368 case DW_EH_PE_udata2: | |
| 369 return 2; | |
| 370 case DW_EH_PE_udata4: | |
| 371 return 4; | |
| 372 case DW_EH_PE_udata8: | |
| 373 return 8; | |
| 374 default: | |
| 375 gcc_unreachable (); | |
| 376 } | |
| 377 } | |
| 378 | |
| 379 /* Yield a name for a given pointer encoding. */ | |
| 380 | |
| 381 const char * | |
| 382 eh_data_format_name (int format) | |
| 383 { | |
| 384 #if HAVE_DESIGNATED_INITIALIZERS | |
| 385 #define S(p, v) [p] = v, | |
| 386 #else | |
| 387 #define S(p, v) case p: return v; | |
| 388 #endif | |
| 389 | |
| 390 #if HAVE_DESIGNATED_INITIALIZERS | |
| 391 __extension__ static const char * const format_names[256] = { | |
| 392 #else | |
| 393 switch (format) { | |
| 394 #endif | |
| 395 | |
| 396 S(DW_EH_PE_absptr, "absolute") | |
| 397 S(DW_EH_PE_omit, "omit") | |
| 398 S(DW_EH_PE_aligned, "aligned absolute") | |
| 399 | |
| 400 S(DW_EH_PE_uleb128, "uleb128") | |
| 401 S(DW_EH_PE_udata2, "udata2") | |
| 402 S(DW_EH_PE_udata4, "udata4") | |
| 403 S(DW_EH_PE_udata8, "udata8") | |
| 404 S(DW_EH_PE_sleb128, "sleb128") | |
| 405 S(DW_EH_PE_sdata2, "sdata2") | |
| 406 S(DW_EH_PE_sdata4, "sdata4") | |
| 407 S(DW_EH_PE_sdata8, "sdata8") | |
| 408 | |
| 409 S(DW_EH_PE_absptr | DW_EH_PE_pcrel, "pcrel") | |
| 410 S(DW_EH_PE_uleb128 | DW_EH_PE_pcrel, "pcrel uleb128") | |
| 411 S(DW_EH_PE_udata2 | DW_EH_PE_pcrel, "pcrel udata2") | |
| 412 S(DW_EH_PE_udata4 | DW_EH_PE_pcrel, "pcrel udata4") | |
| 413 S(DW_EH_PE_udata8 | DW_EH_PE_pcrel, "pcrel udata8") | |
| 414 S(DW_EH_PE_sleb128 | DW_EH_PE_pcrel, "pcrel sleb128") | |
| 415 S(DW_EH_PE_sdata2 | DW_EH_PE_pcrel, "pcrel sdata2") | |
| 416 S(DW_EH_PE_sdata4 | DW_EH_PE_pcrel, "pcrel sdata4") | |
| 417 S(DW_EH_PE_sdata8 | DW_EH_PE_pcrel, "pcrel sdata8") | |
| 418 | |
| 419 S(DW_EH_PE_absptr | DW_EH_PE_textrel, "textrel") | |
| 420 S(DW_EH_PE_uleb128 | DW_EH_PE_textrel, "textrel uleb128") | |
| 421 S(DW_EH_PE_udata2 | DW_EH_PE_textrel, "textrel udata2") | |
| 422 S(DW_EH_PE_udata4 | DW_EH_PE_textrel, "textrel udata4") | |
| 423 S(DW_EH_PE_udata8 | DW_EH_PE_textrel, "textrel udata8") | |
| 424 S(DW_EH_PE_sleb128 | DW_EH_PE_textrel, "textrel sleb128") | |
| 425 S(DW_EH_PE_sdata2 | DW_EH_PE_textrel, "textrel sdata2") | |
| 426 S(DW_EH_PE_sdata4 | DW_EH_PE_textrel, "textrel sdata4") | |
| 427 S(DW_EH_PE_sdata8 | DW_EH_PE_textrel, "textrel sdata8") | |
| 428 | |
| 429 S(DW_EH_PE_absptr | DW_EH_PE_datarel, "datarel") | |
| 430 S(DW_EH_PE_uleb128 | DW_EH_PE_datarel, "datarel uleb128") | |
| 431 S(DW_EH_PE_udata2 | DW_EH_PE_datarel, "datarel udata2") | |
| 432 S(DW_EH_PE_udata4 | DW_EH_PE_datarel, "datarel udata4") | |
| 433 S(DW_EH_PE_udata8 | DW_EH_PE_datarel, "datarel udata8") | |
| 434 S(DW_EH_PE_sleb128 | DW_EH_PE_datarel, "datarel sleb128") | |
| 435 S(DW_EH_PE_sdata2 | DW_EH_PE_datarel, "datarel sdata2") | |
| 436 S(DW_EH_PE_sdata4 | DW_EH_PE_datarel, "datarel sdata4") | |
| 437 S(DW_EH_PE_sdata8 | DW_EH_PE_datarel, "datarel sdata8") | |
| 438 | |
| 439 S(DW_EH_PE_absptr | DW_EH_PE_funcrel, "funcrel") | |
| 440 S(DW_EH_PE_uleb128 | DW_EH_PE_funcrel, "funcrel uleb128") | |
| 441 S(DW_EH_PE_udata2 | DW_EH_PE_funcrel, "funcrel udata2") | |
| 442 S(DW_EH_PE_udata4 | DW_EH_PE_funcrel, "funcrel udata4") | |
| 443 S(DW_EH_PE_udata8 | DW_EH_PE_funcrel, "funcrel udata8") | |
| 444 S(DW_EH_PE_sleb128 | DW_EH_PE_funcrel, "funcrel sleb128") | |
| 445 S(DW_EH_PE_sdata2 | DW_EH_PE_funcrel, "funcrel sdata2") | |
| 446 S(DW_EH_PE_sdata4 | DW_EH_PE_funcrel, "funcrel sdata4") | |
| 447 S(DW_EH_PE_sdata8 | DW_EH_PE_funcrel, "funcrel sdata8") | |
| 448 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
449 S(DW_EH_PE_indirect | DW_EH_PE_absptr, "indirect absolute") |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
450 |
| 0 | 451 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_pcrel, |
| 452 "indirect pcrel") | |
| 453 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_pcrel, | |
| 454 "indirect pcrel uleb128") | |
| 455 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_pcrel, | |
| 456 "indirect pcrel udata2") | |
| 457 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_pcrel, | |
| 458 "indirect pcrel udata4") | |
| 459 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_pcrel, | |
| 460 "indirect pcrel udata8") | |
| 461 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_pcrel, | |
| 462 "indirect pcrel sleb128") | |
| 463 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_pcrel, | |
| 464 "indirect pcrel sdata2") | |
| 465 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_pcrel, | |
| 466 "indirect pcrel sdata4") | |
| 467 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_pcrel, | |
| 468 "indirect pcrel sdata8") | |
| 469 | |
| 470 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_textrel, | |
| 471 "indirect textrel") | |
| 472 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_textrel, | |
| 473 "indirect textrel uleb128") | |
| 474 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_textrel, | |
| 475 "indirect textrel udata2") | |
| 476 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_textrel, | |
| 477 "indirect textrel udata4") | |
| 478 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_textrel, | |
| 479 "indirect textrel udata8") | |
| 480 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_textrel, | |
| 481 "indirect textrel sleb128") | |
| 482 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_textrel, | |
| 483 "indirect textrel sdata2") | |
| 484 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_textrel, | |
| 485 "indirect textrel sdata4") | |
| 486 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_textrel, | |
| 487 "indirect textrel sdata8") | |
| 488 | |
| 489 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_datarel, | |
| 490 "indirect datarel") | |
| 491 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_datarel, | |
| 492 "indirect datarel uleb128") | |
| 493 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_datarel, | |
| 494 "indirect datarel udata2") | |
| 495 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_datarel, | |
| 496 "indirect datarel udata4") | |
| 497 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_datarel, | |
| 498 "indirect datarel udata8") | |
| 499 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_datarel, | |
| 500 "indirect datarel sleb128") | |
| 501 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_datarel, | |
| 502 "indirect datarel sdata2") | |
| 503 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_datarel, | |
| 504 "indirect datarel sdata4") | |
| 505 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_datarel, | |
| 506 "indirect datarel sdata8") | |
| 507 | |
| 508 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_funcrel, | |
| 509 "indirect funcrel") | |
| 510 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_funcrel, | |
| 511 "indirect funcrel uleb128") | |
| 512 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_funcrel, | |
| 513 "indirect funcrel udata2") | |
| 514 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_funcrel, | |
| 515 "indirect funcrel udata4") | |
| 516 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_funcrel, | |
| 517 "indirect funcrel udata8") | |
| 518 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_funcrel, | |
| 519 "indirect funcrel sleb128") | |
| 520 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_funcrel, | |
| 521 "indirect funcrel sdata2") | |
| 522 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_funcrel, | |
| 523 "indirect funcrel sdata4") | |
| 524 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_funcrel, | |
| 525 "indirect funcrel sdata8") | |
| 526 | |
| 527 #if HAVE_DESIGNATED_INITIALIZERS | |
| 528 }; | |
| 529 | |
| 530 gcc_assert (format >= 0 && format < 0x100 && format_names[format]); | |
|
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531 |
| 0 | 532 return format_names[format]; |
| 533 #else | |
| 534 } | |
| 535 gcc_unreachable (); | |
| 536 #endif | |
| 537 } | |
| 538 | |
| 539 /* Output an unsigned LEB128 quantity, but only the byte values. */ | |
| 540 | |
| 541 void | |
| 542 dw2_asm_output_data_uleb128_raw (unsigned HOST_WIDE_INT value) | |
| 543 { | |
| 544 while (1) | |
| 545 { | |
| 546 int byte = (value & 0x7f); | |
| 547 value >>= 7; | |
| 548 if (value != 0) | |
| 549 /* More bytes to follow. */ | |
| 550 byte |= 0x80; | |
| 551 | |
| 552 fprintf (asm_out_file, "0x%x", byte); | |
| 553 if (value == 0) | |
| 554 break; | |
| 555 fputc (',', asm_out_file); | |
| 556 } | |
| 557 } | |
| 558 | |
| 559 /* Output an unsigned LEB128 quantity. */ | |
| 560 | |
| 561 void | |
| 562 dw2_asm_output_data_uleb128 (unsigned HOST_WIDE_INT value, | |
| 563 const char *comment, ...) | |
| 564 { | |
| 565 va_list ap; | |
| 566 | |
| 567 va_start (ap, comment); | |
| 568 | |
| 569 #ifdef HAVE_AS_LEB128 | |
| 570 fprintf (asm_out_file, "\t.uleb128 " HOST_WIDE_INT_PRINT_HEX , value); | |
| 571 | |
| 572 if (flag_debug_asm && comment) | |
| 573 { | |
| 574 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 575 vfprintf (asm_out_file, comment, ap); | |
| 576 } | |
| 577 #else | |
| 578 { | |
| 579 unsigned HOST_WIDE_INT work = value; | |
| 580 const char *byte_op = targetm.asm_out.byte_op; | |
| 581 | |
| 582 if (byte_op) | |
| 583 fputs (byte_op, asm_out_file); | |
| 584 do | |
| 585 { | |
| 586 int byte = (work & 0x7f); | |
| 587 work >>= 7; | |
| 588 if (work != 0) | |
| 589 /* More bytes to follow. */ | |
| 590 byte |= 0x80; | |
| 591 | |
| 592 if (byte_op) | |
| 593 { | |
| 594 fprintf (asm_out_file, "0x%x", byte); | |
| 595 if (work != 0) | |
| 596 fputc (',', asm_out_file); | |
| 597 } | |
| 598 else | |
| 599 assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1); | |
| 600 } | |
| 601 while (work != 0); | |
| 602 | |
| 603 if (flag_debug_asm) | |
| 604 { | |
| 605 fprintf (asm_out_file, "\t%s uleb128 " HOST_WIDE_INT_PRINT_HEX, | |
| 606 ASM_COMMENT_START, value); | |
| 607 if (comment) | |
| 608 { | |
| 609 fputs ("; ", asm_out_file); | |
| 610 vfprintf (asm_out_file, comment, ap); | |
| 611 } | |
| 612 } | |
| 613 } | |
| 614 #endif | |
| 615 fputc ('\n', asm_out_file); | |
| 616 | |
| 617 va_end (ap); | |
| 618 } | |
| 619 | |
| 620 /* Output an signed LEB128 quantity, but only the byte values. */ | |
| 621 | |
| 622 void | |
| 623 dw2_asm_output_data_sleb128_raw (HOST_WIDE_INT value) | |
| 624 { | |
| 625 int byte, more; | |
| 626 | |
| 627 while (1) | |
| 628 { | |
| 629 byte = (value & 0x7f); | |
| 630 value >>= 7; | |
| 631 more = !((value == 0 && (byte & 0x40) == 0) | |
| 632 || (value == -1 && (byte & 0x40) != 0)); | |
| 633 if (more) | |
| 634 byte |= 0x80; | |
| 635 | |
| 636 fprintf (asm_out_file, "0x%x", byte); | |
| 637 if (!more) | |
| 638 break; | |
| 639 fputc (',', asm_out_file); | |
| 640 } | |
| 641 } | |
| 642 | |
| 643 /* Output a signed LEB128 quantity. */ | |
| 644 | |
| 645 void | |
| 646 dw2_asm_output_data_sleb128 (HOST_WIDE_INT value, | |
| 647 const char *comment, ...) | |
| 648 { | |
| 649 va_list ap; | |
| 650 | |
| 651 va_start (ap, comment); | |
| 652 | |
| 653 #ifdef HAVE_AS_LEB128 | |
| 654 fprintf (asm_out_file, "\t.sleb128 " HOST_WIDE_INT_PRINT_DEC, value); | |
| 655 | |
| 656 if (flag_debug_asm && comment) | |
| 657 { | |
| 658 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 659 vfprintf (asm_out_file, comment, ap); | |
| 660 } | |
| 661 #else | |
| 662 { | |
| 663 HOST_WIDE_INT work = value; | |
| 664 int more, byte; | |
| 665 const char *byte_op = targetm.asm_out.byte_op; | |
| 666 | |
| 667 if (byte_op) | |
| 668 fputs (byte_op, asm_out_file); | |
| 669 do | |
| 670 { | |
| 671 byte = (work & 0x7f); | |
| 672 /* arithmetic shift */ | |
| 673 work >>= 7; | |
| 674 more = !((work == 0 && (byte & 0x40) == 0) | |
| 675 || (work == -1 && (byte & 0x40) != 0)); | |
| 676 if (more) | |
| 677 byte |= 0x80; | |
| 678 | |
| 679 if (byte_op) | |
| 680 { | |
| 681 fprintf (asm_out_file, "0x%x", byte); | |
| 682 if (more) | |
| 683 fputc (',', asm_out_file); | |
| 684 } | |
| 685 else | |
| 686 assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1); | |
| 687 } | |
| 688 while (more); | |
| 689 | |
| 690 if (flag_debug_asm) | |
| 691 { | |
| 692 fprintf (asm_out_file, "\t%s sleb128 " HOST_WIDE_INT_PRINT_DEC, | |
| 693 ASM_COMMENT_START, value); | |
| 694 if (comment) | |
| 695 { | |
| 696 fputs ("; ", asm_out_file); | |
| 697 vfprintf (asm_out_file, comment, ap); | |
| 698 } | |
| 699 } | |
| 700 } | |
| 701 #endif | |
| 702 fputc ('\n', asm_out_file); | |
| 703 | |
| 704 va_end (ap); | |
| 705 } | |
| 706 | |
| 707 void | |
| 708 dw2_asm_output_delta_uleb128 (const char *lab1 ATTRIBUTE_UNUSED, | |
| 709 const char *lab2 ATTRIBUTE_UNUSED, | |
| 710 const char *comment, ...) | |
| 711 { | |
| 712 va_list ap; | |
| 713 | |
| 714 va_start (ap, comment); | |
| 715 | |
| 716 #ifdef HAVE_AS_LEB128 | |
| 717 fputs ("\t.uleb128 ", asm_out_file); | |
| 718 assemble_name (asm_out_file, lab1); | |
| 719 fputc ('-', asm_out_file); | |
| 720 assemble_name (asm_out_file, lab2); | |
| 721 #else | |
| 722 gcc_unreachable (); | |
| 723 #endif | |
| 724 | |
| 725 if (flag_debug_asm && comment) | |
| 726 { | |
| 727 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 728 vfprintf (asm_out_file, comment, ap); | |
| 729 } | |
| 730 fputc ('\n', asm_out_file); | |
| 731 | |
| 732 va_end (ap); | |
| 733 } | |
| 734 | |
| 735 #if 0 | |
| 736 | |
| 737 void | |
| 738 dw2_asm_output_delta_sleb128 (const char *lab1 ATTRIBUTE_UNUSED, | |
| 739 const char *lab2 ATTRIBUTE_UNUSED, | |
| 740 const char *comment, ...) | |
| 741 { | |
| 742 va_list ap; | |
| 743 | |
| 744 va_start (ap, comment); | |
| 745 | |
| 746 #ifdef HAVE_AS_LEB128 | |
| 747 fputs ("\t.sleb128 ", asm_out_file); | |
| 748 assemble_name (asm_out_file, lab1); | |
| 749 fputc ('-', asm_out_file); | |
| 750 assemble_name (asm_out_file, lab2); | |
| 751 #else | |
| 752 gcc_unreachable (); | |
| 753 #endif | |
| 754 | |
| 755 if (flag_debug_asm && comment) | |
| 756 { | |
| 757 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 758 vfprintf (asm_out_file, comment, ap); | |
| 759 } | |
| 760 fputc ('\n', asm_out_file); | |
| 761 | |
| 762 va_end (ap); | |
| 763 } | |
| 764 #endif /* 0 */ | |
| 765 | |
| 766 static int dw2_output_indirect_constant_1 (splay_tree_node, void *); | |
| 767 | |
| 768 static GTY((param1_is (char *), param2_is (tree))) splay_tree indirect_pool; | |
| 769 | |
| 770 static GTY(()) int dw2_const_labelno; | |
| 771 | |
| 772 #if defined(HAVE_GAS_HIDDEN) && defined(SUPPORTS_ONE_ONLY) | |
| 773 # define USE_LINKONCE_INDIRECT 1 | |
| 774 #else | |
| 775 # define USE_LINKONCE_INDIRECT 0 | |
| 776 #endif | |
| 777 | |
| 778 /* Comparison function for a splay tree in which the keys are strings. | |
| 779 K1 and K2 have the dynamic type "const char *". Returns <0, 0, or | |
| 780 >0 to indicate whether K1 is less than, equal to, or greater than | |
| 781 K2, respectively. */ | |
| 782 | |
| 783 static int | |
| 784 splay_tree_compare_strings (splay_tree_key k1, splay_tree_key k2) | |
| 785 { | |
| 786 const char *s1 = (const char *)k1; | |
| 787 const char *s2 = (const char *)k2; | |
| 788 int ret; | |
| 789 | |
| 790 if (s1 == s2) | |
| 791 return 0; | |
| 792 | |
| 793 ret = strcmp (s1, s2); | |
| 794 | |
| 795 /* The strings are always those from IDENTIFIER_NODEs, and, | |
| 796 therefore, we should never have two copies of the same | |
| 797 string. */ | |
| 798 gcc_assert (ret); | |
| 799 | |
| 800 return ret; | |
| 801 } | |
| 802 | |
| 803 /* Put X, a SYMBOL_REF, in memory. Return a SYMBOL_REF to the allocated | |
| 804 memory. Differs from force_const_mem in that a single pool is used for | |
| 805 the entire unit of translation, and the memory is not guaranteed to be | |
| 806 "near" the function in any interesting sense. IS_PUBLIC controls whether | |
| 807 the symbol can be shared across the entire application (or DSO). */ | |
| 808 | |
| 809 rtx | |
| 810 dw2_force_const_mem (rtx x, bool is_public) | |
| 811 { | |
| 812 splay_tree_node node; | |
| 813 const char *key; | |
|
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814 tree decl_id; |
| 0 | 815 |
| 816 if (! indirect_pool) | |
| 817 /* We use strcmp, rather than just comparing pointers, so that the | |
| 818 sort order will not depend on the host system. */ | |
| 819 indirect_pool = splay_tree_new_ggc (splay_tree_compare_strings); | |
| 820 | |
| 821 gcc_assert (GET_CODE (x) == SYMBOL_REF); | |
| 822 | |
| 823 key = XSTR (x, 0); | |
| 824 node = splay_tree_lookup (indirect_pool, (splay_tree_key) key); | |
| 825 if (node) | |
|
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826 decl_id = (tree) node->value; |
| 0 | 827 else |
| 828 { | |
| 829 tree id; | |
| 830 const char *str = targetm.strip_name_encoding (key); | |
| 831 | |
| 832 if (is_public && USE_LINKONCE_INDIRECT) | |
| 833 { | |
| 834 char *ref_name = XALLOCAVEC (char, strlen (str) + sizeof "DW.ref."); | |
| 835 | |
| 836 sprintf (ref_name, "DW.ref.%s", str); | |
|
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837 gcc_assert (!maybe_get_identifier (ref_name)); |
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838 decl_id = get_identifier (ref_name); |
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839 TREE_PUBLIC (decl_id) = 1; |
| 0 | 840 } |
| 841 else | |
| 842 { | |
| 843 char label[32]; | |
| 844 | |
| 845 ASM_GENERATE_INTERNAL_LABEL (label, "LDFCM", dw2_const_labelno); | |
| 846 ++dw2_const_labelno; | |
|
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847 gcc_assert (!maybe_get_identifier (label)); |
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848 decl_id = get_identifier (label); |
| 0 | 849 } |
| 850 | |
| 851 id = maybe_get_identifier (str); | |
| 852 if (id) | |
| 853 TREE_SYMBOL_REFERENCED (id) = 1; | |
| 854 | |
| 855 splay_tree_insert (indirect_pool, (splay_tree_key) key, | |
|
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856 (splay_tree_value) decl_id); |
| 0 | 857 } |
| 858 | |
|
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859 return gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (decl_id)); |
| 0 | 860 } |
| 861 | |
| 862 /* A helper function for dw2_output_indirect_constants called through | |
| 863 splay_tree_foreach. Emit one queued constant to memory. */ | |
| 864 | |
| 865 static int | |
| 866 dw2_output_indirect_constant_1 (splay_tree_node node, | |
| 867 void *data ATTRIBUTE_UNUSED) | |
| 868 { | |
| 869 const char *sym; | |
| 870 rtx sym_ref; | |
|
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871 tree id, decl; |
| 0 | 872 |
| 873 sym = (const char *) node->key; | |
|
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874 id = (tree) node->value; |
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875 |
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876 decl = build_decl (UNKNOWN_LOCATION, VAR_DECL, id, ptr_type_node); |
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877 DECL_ARTIFICIAL (decl) = 1; |
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878 DECL_IGNORED_P (decl) = 1; |
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879 DECL_INITIAL (decl) = decl; |
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880 |
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881 if (TREE_PUBLIC (id)) |
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882 { |
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883 TREE_PUBLIC (decl) = 1; |
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884 make_decl_one_only (decl, DECL_ASSEMBLER_NAME (decl)); |
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885 } |
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886 else |
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887 TREE_STATIC (decl) = 1; |
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888 |
| 0 | 889 sym_ref = gen_rtx_SYMBOL_REF (Pmode, sym); |
| 890 sym = targetm.strip_name_encoding (sym); | |
| 891 if (TREE_PUBLIC (decl) && USE_LINKONCE_INDIRECT) | |
| 892 fprintf (asm_out_file, "\t.hidden %sDW.ref.%s\n", user_label_prefix, sym); | |
| 893 assemble_variable (decl, 1, 1, 1); | |
| 894 assemble_integer (sym_ref, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1); | |
| 895 | |
| 896 return 0; | |
| 897 } | |
| 898 | |
| 899 /* Emit the constants queued through dw2_force_const_mem. */ | |
| 900 | |
| 901 void | |
| 902 dw2_output_indirect_constants (void) | |
| 903 { | |
| 904 if (indirect_pool) | |
| 905 splay_tree_foreach (indirect_pool, dw2_output_indirect_constant_1, NULL); | |
| 906 } | |
| 907 | |
| 908 /* Like dw2_asm_output_addr_rtx, but encode the pointer as directed. | |
| 909 If PUBLIC is set and the encoding is DW_EH_PE_indirect, the indirect | |
| 910 reference is shared across the entire application (or DSO). */ | |
| 911 | |
| 912 void | |
| 913 dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr, bool is_public, | |
| 914 const char *comment, ...) | |
| 915 { | |
| 916 int size; | |
| 917 va_list ap; | |
| 918 | |
| 919 va_start (ap, comment); | |
| 920 | |
| 921 size = size_of_encoded_value (encoding); | |
| 922 | |
| 923 if (encoding == DW_EH_PE_aligned) | |
| 924 { | |
| 925 assemble_align (POINTER_SIZE); | |
| 926 assemble_integer (addr, size, POINTER_SIZE, 1); | |
| 927 return; | |
| 928 } | |
| 929 | |
| 930 /* NULL is _always_ represented as a plain zero, as is 1 for Ada's | |
| 931 "all others". */ | |
| 932 if (addr == const0_rtx || addr == const1_rtx) | |
| 933 assemble_integer (addr, size, BITS_PER_UNIT, 1); | |
| 934 else | |
| 935 { | |
| 936 restart: | |
| 937 /* Allow the target first crack at emitting this. Some of the | |
| 938 special relocations require special directives instead of | |
| 939 just ".4byte" or whatever. */ | |
| 940 #ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
| 941 ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX (asm_out_file, encoding, size, | |
| 942 addr, done); | |
| 943 #endif | |
| 944 | |
| 945 /* Indirection is used to get dynamic relocations out of a | |
| 946 read-only section. */ | |
| 947 if (encoding & DW_EH_PE_indirect) | |
| 948 { | |
| 949 /* It is very tempting to use force_const_mem so that we share data | |
| 950 with the normal constant pool. However, we've already emitted | |
| 951 the constant pool for this function. Moreover, we'd like to | |
| 952 share these constants across the entire unit of translation and | |
| 953 even, if possible, across the entire application (or DSO). */ | |
| 954 addr = dw2_force_const_mem (addr, is_public); | |
| 955 encoding &= ~DW_EH_PE_indirect; | |
| 956 goto restart; | |
| 957 } | |
| 958 | |
| 959 switch (encoding & 0xF0) | |
| 960 { | |
| 961 case DW_EH_PE_absptr: | |
| 962 dw2_assemble_integer (size, addr); | |
| 963 break; | |
| 964 | |
| 965 case DW_EH_PE_pcrel: | |
| 966 gcc_assert (GET_CODE (addr) == SYMBOL_REF); | |
| 967 #ifdef ASM_OUTPUT_DWARF_PCREL | |
| 968 ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, XSTR (addr, 0)); | |
| 969 #else | |
| 970 dw2_assemble_integer (size, gen_rtx_MINUS (Pmode, addr, pc_rtx)); | |
| 971 #endif | |
| 972 break; | |
| 973 | |
| 974 default: | |
| 975 /* Other encodings should have been handled by | |
| 976 ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX. */ | |
| 977 gcc_unreachable (); | |
| 978 } | |
| 979 | |
| 980 #ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
| 981 done:; | |
| 982 #endif | |
| 983 } | |
| 984 | |
| 985 if (flag_debug_asm && comment) | |
| 986 { | |
| 987 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 988 vfprintf (asm_out_file, comment, ap); | |
| 989 } | |
| 990 fputc ('\n', asm_out_file); | |
| 991 | |
| 992 va_end (ap); | |
| 993 } | |
| 994 | |
| 995 #include "gt-dwarf2asm.h" |