Mercurial > hg > CbC > CbC_gcc
annotate gcc/dwarf2asm.c @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Dwarf2 assembler output helper routines. |
| 145 | 2 Copyright (C) 2001-2020 Free Software Foundation, Inc. |
| 0 | 3 |
| 4 This file is part of GCC. | |
| 5 | |
| 6 GCC is free software; you can redistribute it and/or modify it under | |
| 7 the terms of the GNU General Public License as published by the Free | |
| 8 Software Foundation; either version 3, or (at your option) any later | |
| 9 version. | |
| 10 | |
| 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
| 17 along with GCC; see the file COPYING3. If not see | |
| 18 <http://www.gnu.org/licenses/>. */ | |
| 19 | |
| 20 | |
| 21 #include "config.h" | |
| 22 #include "system.h" | |
| 23 #include "coretypes.h" | |
| 111 | 24 #include "target.h" |
| 25 #include "rtl.h" | |
| 0 | 26 #include "tree.h" |
| 111 | 27 #include "memmodel.h" |
| 28 #include "tm_p.h" | |
| 29 #include "stringpool.h" | |
| 30 #include "varasm.h" | |
| 0 | 31 #include "output.h" |
| 32 #include "dwarf2asm.h" | |
| 33 #include "dwarf2.h" | |
| 111 | 34 #include "function.h" |
| 35 #include "emit-rtl.h" | |
| 131 | 36 #include "fold-const.h" |
| 0 | 37 |
| 111 | 38 #ifndef XCOFF_DEBUGGING_INFO |
| 39 #define XCOFF_DEBUGGING_INFO 0 | |
| 0 | 40 #endif |
| 41 | |
| 42 | |
| 43 /* Output an unaligned integer with the given value and size. Prefer not | |
| 44 to print a newline, since the caller may want to add a comment. */ | |
| 45 | |
| 46 void | |
| 47 dw2_assemble_integer (int size, rtx x) | |
| 48 { | |
| 49 const char *op = integer_asm_op (size, FALSE); | |
| 50 | |
| 51 if (op) | |
| 52 { | |
| 53 fputs (op, asm_out_file); | |
|
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54 if (CONST_INT_P (x)) |
| 111 | 55 fprint_whex (asm_out_file, (unsigned HOST_WIDE_INT) INTVAL (x)); |
| 0 | 56 else |
| 57 output_addr_const (asm_out_file, x); | |
| 58 } | |
| 59 else | |
| 60 assemble_integer (x, size, BITS_PER_UNIT, 1); | |
| 61 } | |
| 62 | |
| 63 | |
| 64 /* Output a value of a given size in target byte order. */ | |
| 65 | |
| 66 void | |
| 67 dw2_asm_output_data_raw (int size, unsigned HOST_WIDE_INT value) | |
| 68 { | |
| 69 unsigned char bytes[8]; | |
| 70 int i; | |
| 71 | |
| 72 for (i = 0; i < 8; ++i) | |
| 73 { | |
| 74 bytes[i] = value & 0xff; | |
| 75 value >>= 8; | |
| 76 } | |
| 77 | |
| 78 if (BYTES_BIG_ENDIAN) | |
| 79 { | |
| 80 for (i = size - 1; i > 0; --i) | |
|
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81 fprintf (asm_out_file, "%#x,", bytes[i]); |
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82 fprintf (asm_out_file, "%#x", bytes[0]); |
| 0 | 83 } |
| 84 else | |
| 85 { | |
| 86 for (i = 0; i < size - 1; ++i) | |
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87 fprintf (asm_out_file, "%#x,", bytes[i]); |
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88 fprintf (asm_out_file, "%#x", bytes[i]); |
| 0 | 89 } |
| 90 } | |
| 91 | |
| 92 /* Output an immediate constant in a given SIZE in bytes. */ | |
| 93 | |
| 94 void | |
| 95 dw2_asm_output_data (int size, unsigned HOST_WIDE_INT value, | |
| 96 const char *comment, ...) | |
| 97 { | |
| 98 va_list ap; | |
| 99 const char *op = integer_asm_op (size, FALSE); | |
| 100 | |
| 101 va_start (ap, comment); | |
| 102 | |
| 103 if (size * 8 < HOST_BITS_PER_WIDE_INT) | |
| 111 | 104 value &= ~(HOST_WIDE_INT_M1U << (size * 8)); |
| 0 | 105 |
| 106 if (op) | |
| 111 | 107 { |
| 108 fputs (op, asm_out_file); | |
| 109 fprint_whex (asm_out_file, value); | |
| 110 } | |
| 0 | 111 else |
| 112 assemble_integer (GEN_INT (value), size, BITS_PER_UNIT, 1); | |
| 113 | |
| 114 if (flag_debug_asm && comment) | |
| 115 { | |
| 111 | 116 fputs ("\t" ASM_COMMENT_START " ", asm_out_file); |
| 0 | 117 vfprintf (asm_out_file, comment, ap); |
| 118 } | |
| 111 | 119 putc ('\n', asm_out_file); |
| 0 | 120 |
| 121 va_end (ap); | |
| 122 } | |
| 123 | |
| 124 /* Output the difference between two symbols in a given size. */ | |
| 125 /* ??? There appear to be assemblers that do not like such | |
| 126 subtraction, but do support ASM_SET_OP. It's unfortunately | |
| 127 impossible to do here, since the ASM_SET_OP for the difference | |
| 128 symbol must appear after both symbols are defined. */ | |
| 129 | |
| 130 void | |
| 131 dw2_asm_output_delta (int size, const char *lab1, const char *lab2, | |
| 132 const char *comment, ...) | |
| 133 { | |
| 134 va_list ap; | |
| 135 | |
| 136 va_start (ap, comment); | |
| 137 | |
| 138 #ifdef ASM_OUTPUT_DWARF_DELTA | |
| 139 ASM_OUTPUT_DWARF_DELTA (asm_out_file, size, lab1, lab2); | |
| 140 #else | |
| 141 dw2_assemble_integer (size, | |
| 142 gen_rtx_MINUS (Pmode, | |
| 143 gen_rtx_SYMBOL_REF (Pmode, lab1), | |
| 144 gen_rtx_SYMBOL_REF (Pmode, lab2))); | |
| 145 #endif | |
| 146 if (flag_debug_asm && comment) | |
| 147 { | |
| 148 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 149 vfprintf (asm_out_file, comment, ap); | |
| 150 } | |
| 151 fputc ('\n', asm_out_file); | |
| 152 | |
| 153 va_end (ap); | |
| 154 } | |
| 155 | |
| 111 | 156 #ifdef ASM_OUTPUT_DWARF_VMS_DELTA |
|
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157 /* Output the difference between two symbols in instruction units |
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158 in a given size. */ |
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159 |
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160 void |
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161 dw2_asm_output_vms_delta (int size ATTRIBUTE_UNUSED, |
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162 const char *lab1, const char *lab2, |
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163 const char *comment, ...) |
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164 { |
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165 va_list ap; |
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166 |
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167 va_start (ap, comment); |
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168 |
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169 ASM_OUTPUT_DWARF_VMS_DELTA (asm_out_file, size, lab1, lab2); |
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170 if (flag_debug_asm && comment) |
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171 { |
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172 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); |
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173 vfprintf (asm_out_file, comment, ap); |
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174 } |
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175 fputc ('\n', asm_out_file); |
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176 |
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177 va_end (ap); |
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178 } |
| 111 | 179 #endif |
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180 |
| 0 | 181 /* Output a section-relative reference to a LABEL, which was placed in |
| 182 BASE. In general this can only be done for debugging symbols. | |
| 183 E.g. on most targets with the GNU linker, this is accomplished with | |
| 184 a direct reference and the knowledge that the debugging section | |
| 185 will be placed at VMA 0. Some targets have special relocations for | |
| 186 this that we must use. */ | |
| 187 | |
| 188 void | |
| 189 dw2_asm_output_offset (int size, const char *label, | |
| 190 section *base ATTRIBUTE_UNUSED, | |
| 191 const char *comment, ...) | |
| 192 { | |
| 193 va_list ap; | |
| 194 | |
| 195 va_start (ap, comment); | |
| 196 | |
| 197 #ifdef ASM_OUTPUT_DWARF_OFFSET | |
| 111 | 198 ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label, 0, base); |
| 0 | 199 #else |
| 200 dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label)); | |
| 201 #endif | |
| 202 | |
| 203 if (flag_debug_asm && comment) | |
| 204 { | |
| 205 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 206 vfprintf (asm_out_file, comment, ap); | |
| 207 } | |
| 208 fputc ('\n', asm_out_file); | |
| 209 | |
| 210 va_end (ap); | |
| 211 } | |
| 212 | |
| 111 | 213 void |
| 214 dw2_asm_output_offset (int size, const char *label, HOST_WIDE_INT offset, | |
| 215 section *base ATTRIBUTE_UNUSED, | |
| 216 const char *comment, ...) | |
| 217 { | |
| 218 va_list ap; | |
| 219 | |
| 220 va_start (ap, comment); | |
| 221 | |
| 222 #ifdef ASM_OUTPUT_DWARF_OFFSET | |
| 223 ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label, offset, base); | |
| 224 #else | |
| 225 dw2_assemble_integer (size, gen_rtx_PLUS (Pmode, | |
| 226 gen_rtx_SYMBOL_REF (Pmode, label), | |
| 227 gen_int_mode (offset, Pmode))); | |
| 228 #endif | |
| 229 | |
| 230 if (flag_debug_asm && comment) | |
| 231 { | |
| 232 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 233 vfprintf (asm_out_file, comment, ap); | |
| 234 } | |
| 235 fputc ('\n', asm_out_file); | |
| 236 | |
| 237 va_end (ap); | |
| 238 } | |
| 239 | |
| 0 | 240 #if 0 |
| 241 | |
| 242 /* Output a self-relative reference to a label, possibly in a | |
| 243 different section or object file. */ | |
| 244 | |
| 245 void | |
| 246 dw2_asm_output_pcrel (int size ATTRIBUTE_UNUSED, | |
| 247 const char *label ATTRIBUTE_UNUSED, | |
| 248 const char *comment, ...) | |
| 249 { | |
| 250 va_list ap; | |
| 251 | |
| 252 va_start (ap, comment); | |
| 253 | |
| 254 #ifdef ASM_OUTPUT_DWARF_PCREL | |
| 255 ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, label); | |
| 256 #else | |
| 257 dw2_assemble_integer (size, | |
| 258 gen_rtx_MINUS (Pmode, | |
| 259 gen_rtx_SYMBOL_REF (Pmode, label), | |
| 260 pc_rtx)); | |
| 261 #endif | |
| 262 | |
| 263 if (flag_debug_asm && comment) | |
| 264 { | |
| 265 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 266 vfprintf (asm_out_file, comment, ap); | |
| 267 } | |
| 268 fputc ('\n', asm_out_file); | |
| 269 | |
| 270 va_end (ap); | |
| 271 } | |
| 272 #endif /* 0 */ | |
| 273 | |
| 274 /* Output an absolute reference to a label. */ | |
| 275 | |
| 276 void | |
| 277 dw2_asm_output_addr (int size, const char *label, | |
| 278 const char *comment, ...) | |
| 279 { | |
| 280 va_list ap; | |
| 281 | |
| 282 va_start (ap, comment); | |
| 283 | |
| 284 dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label)); | |
| 285 | |
| 286 if (flag_debug_asm && comment) | |
| 287 { | |
| 288 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 289 vfprintf (asm_out_file, comment, ap); | |
| 290 } | |
| 291 fputc ('\n', asm_out_file); | |
| 292 | |
| 293 va_end (ap); | |
| 294 } | |
| 295 | |
| 296 /* Similar, but use an RTX expression instead of a text label. */ | |
| 297 | |
| 298 void | |
| 299 dw2_asm_output_addr_rtx (int size, rtx addr, | |
| 300 const char *comment, ...) | |
| 301 { | |
| 302 va_list ap; | |
| 303 | |
| 304 va_start (ap, comment); | |
| 305 | |
| 306 dw2_assemble_integer (size, addr); | |
| 307 | |
| 308 if (flag_debug_asm && comment) | |
| 309 { | |
| 310 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 311 vfprintf (asm_out_file, comment, ap); | |
| 312 } | |
| 313 fputc ('\n', asm_out_file); | |
| 314 | |
| 315 va_end (ap); | |
| 316 } | |
| 317 | |
| 318 /* Output the first ORIG_LEN characters of STR as a string. | |
| 319 If ORIG_LEN is equal to -1, ignore this parameter and output | |
| 320 the entire STR instead. | |
| 321 If COMMENT is not NULL and comments in the debug information | |
| 322 have been requested by the user, append the given COMMENT | |
| 323 to the generated output. */ | |
|
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324 |
| 0 | 325 void |
| 326 dw2_asm_output_nstring (const char *str, size_t orig_len, | |
| 327 const char *comment, ...) | |
| 328 { | |
| 329 size_t i, len; | |
| 330 va_list ap; | |
| 331 | |
| 332 va_start (ap, comment); | |
| 333 | |
| 334 len = orig_len; | |
| 335 | |
| 336 if (len == (size_t) -1) | |
| 337 len = strlen (str); | |
| 338 | |
| 339 if (flag_debug_asm && comment) | |
| 340 { | |
| 111 | 341 if (XCOFF_DEBUGGING_INFO) |
| 342 fputs ("\t.byte \"", asm_out_file); | |
| 343 else | |
| 344 fputs ("\t.ascii \"", asm_out_file); | |
| 345 | |
| 0 | 346 for (i = 0; i < len; i++) |
| 347 { | |
| 348 int c = str[i]; | |
| 111 | 349 if (c == '\"') |
| 350 fputc (XCOFF_DEBUGGING_INFO ? '\"' : '\\', asm_out_file); | |
| 351 else if (c == '\\') | |
| 0 | 352 fputc ('\\', asm_out_file); |
| 111 | 353 if (ISPRINT (c)) |
| 0 | 354 fputc (c, asm_out_file); |
| 355 else | |
| 356 fprintf (asm_out_file, "\\%o", c); | |
| 357 } | |
| 358 fprintf (asm_out_file, "\\0\"\t%s ", ASM_COMMENT_START); | |
| 359 vfprintf (asm_out_file, comment, ap); | |
| 360 fputc ('\n', asm_out_file); | |
| 361 } | |
| 362 else | |
| 363 { | |
| 364 /* If an explicit length was given, we can't assume there | |
| 365 is a null termination in the string buffer. */ | |
| 366 if (orig_len == (size_t) -1) | |
| 367 len += 1; | |
| 368 ASM_OUTPUT_ASCII (asm_out_file, str, len); | |
| 369 if (orig_len != (size_t) -1) | |
| 370 assemble_integer (const0_rtx, 1, BITS_PER_UNIT, 1); | |
| 371 } | |
| 372 | |
| 373 va_end (ap); | |
| 374 } | |
| 375 | |
| 376 | |
| 377 /* Return the size of an unsigned LEB128 quantity. */ | |
| 378 | |
| 379 int | |
| 380 size_of_uleb128 (unsigned HOST_WIDE_INT value) | |
| 381 { | |
| 382 int size = 0; | |
| 383 | |
| 384 do | |
| 385 { | |
| 386 value >>= 7; | |
| 387 size += 1; | |
| 388 } | |
| 389 while (value != 0); | |
| 390 | |
| 391 return size; | |
| 392 } | |
| 393 | |
| 394 /* Return the size of a signed LEB128 quantity. */ | |
| 395 | |
| 396 int | |
| 397 size_of_sleb128 (HOST_WIDE_INT value) | |
| 398 { | |
| 399 int size = 0, byte; | |
| 400 | |
| 401 do | |
| 402 { | |
| 403 byte = (value & 0x7f); | |
| 404 value >>= 7; | |
| 405 size += 1; | |
| 406 } | |
| 407 while (!((value == 0 && (byte & 0x40) == 0) | |
| 408 || (value == -1 && (byte & 0x40) != 0))); | |
| 409 | |
| 410 return size; | |
| 411 } | |
| 412 | |
| 413 /* Given an encoding, return the number of bytes the format occupies. | |
| 414 This is only defined for fixed-size encodings, and so does not | |
| 415 include leb128. */ | |
| 416 | |
| 417 int | |
| 418 size_of_encoded_value (int encoding) | |
| 419 { | |
| 420 if (encoding == DW_EH_PE_omit) | |
| 421 return 0; | |
| 422 | |
| 423 switch (encoding & 0x07) | |
| 424 { | |
| 425 case DW_EH_PE_absptr: | |
| 111 | 426 return POINTER_SIZE_UNITS; |
| 0 | 427 case DW_EH_PE_udata2: |
| 428 return 2; | |
| 429 case DW_EH_PE_udata4: | |
| 430 return 4; | |
| 431 case DW_EH_PE_udata8: | |
| 432 return 8; | |
| 433 default: | |
| 434 gcc_unreachable (); | |
| 435 } | |
| 436 } | |
| 437 | |
| 438 /* Yield a name for a given pointer encoding. */ | |
| 439 | |
| 440 const char * | |
| 441 eh_data_format_name (int format) | |
| 442 { | |
| 443 #if HAVE_DESIGNATED_INITIALIZERS | |
| 444 #define S(p, v) [p] = v, | |
| 445 #else | |
| 446 #define S(p, v) case p: return v; | |
| 447 #endif | |
| 448 | |
| 449 #if HAVE_DESIGNATED_INITIALIZERS | |
| 450 __extension__ static const char * const format_names[256] = { | |
| 451 #else | |
| 452 switch (format) { | |
| 453 #endif | |
| 454 | |
| 455 S(DW_EH_PE_absptr, "absolute") | |
| 456 S(DW_EH_PE_omit, "omit") | |
| 457 S(DW_EH_PE_aligned, "aligned absolute") | |
| 458 | |
| 459 S(DW_EH_PE_uleb128, "uleb128") | |
| 460 S(DW_EH_PE_udata2, "udata2") | |
| 461 S(DW_EH_PE_udata4, "udata4") | |
| 462 S(DW_EH_PE_udata8, "udata8") | |
| 463 S(DW_EH_PE_sleb128, "sleb128") | |
| 464 S(DW_EH_PE_sdata2, "sdata2") | |
| 465 S(DW_EH_PE_sdata4, "sdata4") | |
| 466 S(DW_EH_PE_sdata8, "sdata8") | |
| 467 | |
| 468 S(DW_EH_PE_absptr | DW_EH_PE_pcrel, "pcrel") | |
| 469 S(DW_EH_PE_uleb128 | DW_EH_PE_pcrel, "pcrel uleb128") | |
| 470 S(DW_EH_PE_udata2 | DW_EH_PE_pcrel, "pcrel udata2") | |
| 471 S(DW_EH_PE_udata4 | DW_EH_PE_pcrel, "pcrel udata4") | |
| 472 S(DW_EH_PE_udata8 | DW_EH_PE_pcrel, "pcrel udata8") | |
| 473 S(DW_EH_PE_sleb128 | DW_EH_PE_pcrel, "pcrel sleb128") | |
| 474 S(DW_EH_PE_sdata2 | DW_EH_PE_pcrel, "pcrel sdata2") | |
| 475 S(DW_EH_PE_sdata4 | DW_EH_PE_pcrel, "pcrel sdata4") | |
| 476 S(DW_EH_PE_sdata8 | DW_EH_PE_pcrel, "pcrel sdata8") | |
| 477 | |
| 478 S(DW_EH_PE_absptr | DW_EH_PE_textrel, "textrel") | |
| 479 S(DW_EH_PE_uleb128 | DW_EH_PE_textrel, "textrel uleb128") | |
| 480 S(DW_EH_PE_udata2 | DW_EH_PE_textrel, "textrel udata2") | |
| 481 S(DW_EH_PE_udata4 | DW_EH_PE_textrel, "textrel udata4") | |
| 482 S(DW_EH_PE_udata8 | DW_EH_PE_textrel, "textrel udata8") | |
| 483 S(DW_EH_PE_sleb128 | DW_EH_PE_textrel, "textrel sleb128") | |
| 484 S(DW_EH_PE_sdata2 | DW_EH_PE_textrel, "textrel sdata2") | |
| 485 S(DW_EH_PE_sdata4 | DW_EH_PE_textrel, "textrel sdata4") | |
| 486 S(DW_EH_PE_sdata8 | DW_EH_PE_textrel, "textrel sdata8") | |
| 487 | |
| 488 S(DW_EH_PE_absptr | DW_EH_PE_datarel, "datarel") | |
| 489 S(DW_EH_PE_uleb128 | DW_EH_PE_datarel, "datarel uleb128") | |
| 490 S(DW_EH_PE_udata2 | DW_EH_PE_datarel, "datarel udata2") | |
| 491 S(DW_EH_PE_udata4 | DW_EH_PE_datarel, "datarel udata4") | |
| 492 S(DW_EH_PE_udata8 | DW_EH_PE_datarel, "datarel udata8") | |
| 493 S(DW_EH_PE_sleb128 | DW_EH_PE_datarel, "datarel sleb128") | |
| 494 S(DW_EH_PE_sdata2 | DW_EH_PE_datarel, "datarel sdata2") | |
| 495 S(DW_EH_PE_sdata4 | DW_EH_PE_datarel, "datarel sdata4") | |
| 496 S(DW_EH_PE_sdata8 | DW_EH_PE_datarel, "datarel sdata8") | |
| 497 | |
| 498 S(DW_EH_PE_absptr | DW_EH_PE_funcrel, "funcrel") | |
| 499 S(DW_EH_PE_uleb128 | DW_EH_PE_funcrel, "funcrel uleb128") | |
| 500 S(DW_EH_PE_udata2 | DW_EH_PE_funcrel, "funcrel udata2") | |
| 501 S(DW_EH_PE_udata4 | DW_EH_PE_funcrel, "funcrel udata4") | |
| 502 S(DW_EH_PE_udata8 | DW_EH_PE_funcrel, "funcrel udata8") | |
| 503 S(DW_EH_PE_sleb128 | DW_EH_PE_funcrel, "funcrel sleb128") | |
| 504 S(DW_EH_PE_sdata2 | DW_EH_PE_funcrel, "funcrel sdata2") | |
| 505 S(DW_EH_PE_sdata4 | DW_EH_PE_funcrel, "funcrel sdata4") | |
| 506 S(DW_EH_PE_sdata8 | DW_EH_PE_funcrel, "funcrel sdata8") | |
| 507 | |
|
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508 S(DW_EH_PE_indirect | DW_EH_PE_absptr, "indirect absolute") |
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509 |
| 0 | 510 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_pcrel, |
| 511 "indirect pcrel") | |
| 512 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_pcrel, | |
| 513 "indirect pcrel uleb128") | |
| 514 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_pcrel, | |
| 515 "indirect pcrel udata2") | |
| 516 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_pcrel, | |
| 517 "indirect pcrel udata4") | |
| 518 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_pcrel, | |
| 519 "indirect pcrel udata8") | |
| 520 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_pcrel, | |
| 521 "indirect pcrel sleb128") | |
| 522 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_pcrel, | |
| 523 "indirect pcrel sdata2") | |
| 524 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_pcrel, | |
| 525 "indirect pcrel sdata4") | |
| 526 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_pcrel, | |
| 527 "indirect pcrel sdata8") | |
| 528 | |
| 529 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_textrel, | |
| 530 "indirect textrel") | |
| 531 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_textrel, | |
| 532 "indirect textrel uleb128") | |
| 533 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_textrel, | |
| 534 "indirect textrel udata2") | |
| 535 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_textrel, | |
| 536 "indirect textrel udata4") | |
| 537 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_textrel, | |
| 538 "indirect textrel udata8") | |
| 539 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_textrel, | |
| 540 "indirect textrel sleb128") | |
| 541 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_textrel, | |
| 542 "indirect textrel sdata2") | |
| 543 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_textrel, | |
| 544 "indirect textrel sdata4") | |
| 545 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_textrel, | |
| 546 "indirect textrel sdata8") | |
| 547 | |
| 548 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_datarel, | |
| 549 "indirect datarel") | |
| 550 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_datarel, | |
| 551 "indirect datarel uleb128") | |
| 552 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_datarel, | |
| 553 "indirect datarel udata2") | |
| 554 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_datarel, | |
| 555 "indirect datarel udata4") | |
| 556 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_datarel, | |
| 557 "indirect datarel udata8") | |
| 558 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_datarel, | |
| 559 "indirect datarel sleb128") | |
| 560 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_datarel, | |
| 561 "indirect datarel sdata2") | |
| 562 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_datarel, | |
| 563 "indirect datarel sdata4") | |
| 564 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_datarel, | |
| 565 "indirect datarel sdata8") | |
| 566 | |
| 567 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_funcrel, | |
| 568 "indirect funcrel") | |
| 569 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_funcrel, | |
| 570 "indirect funcrel uleb128") | |
| 571 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_funcrel, | |
| 572 "indirect funcrel udata2") | |
| 573 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_funcrel, | |
| 574 "indirect funcrel udata4") | |
| 575 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_funcrel, | |
| 576 "indirect funcrel udata8") | |
| 577 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_funcrel, | |
| 578 "indirect funcrel sleb128") | |
| 579 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_funcrel, | |
| 580 "indirect funcrel sdata2") | |
| 581 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_funcrel, | |
| 582 "indirect funcrel sdata4") | |
| 583 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_funcrel, | |
| 584 "indirect funcrel sdata8") | |
| 585 | |
| 586 #if HAVE_DESIGNATED_INITIALIZERS | |
| 587 }; | |
| 588 | |
| 589 gcc_assert (format >= 0 && format < 0x100 && format_names[format]); | |
|
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590 |
| 0 | 591 return format_names[format]; |
| 592 #else | |
| 593 } | |
| 594 gcc_unreachable (); | |
| 595 #endif | |
| 596 } | |
| 597 | |
| 598 /* Output an unsigned LEB128 quantity, but only the byte values. */ | |
| 599 | |
| 600 void | |
| 601 dw2_asm_output_data_uleb128_raw (unsigned HOST_WIDE_INT value) | |
| 602 { | |
| 603 while (1) | |
| 604 { | |
| 605 int byte = (value & 0x7f); | |
| 606 value >>= 7; | |
| 607 if (value != 0) | |
| 608 /* More bytes to follow. */ | |
| 609 byte |= 0x80; | |
| 610 | |
|
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611 fprintf (asm_out_file, "%#x", byte); |
| 0 | 612 if (value == 0) |
| 613 break; | |
| 614 fputc (',', asm_out_file); | |
| 615 } | |
| 616 } | |
| 617 | |
| 618 /* Output an unsigned LEB128 quantity. */ | |
| 619 | |
| 620 void | |
| 621 dw2_asm_output_data_uleb128 (unsigned HOST_WIDE_INT value, | |
| 622 const char *comment, ...) | |
| 623 { | |
| 624 va_list ap; | |
| 625 | |
| 626 va_start (ap, comment); | |
| 627 | |
| 111 | 628 if (HAVE_AS_LEB128) |
| 0 | 629 { |
| 111 | 630 fputs ("\t.uleb128 ", asm_out_file); |
| 631 fprint_whex (asm_out_file, value); | |
| 0 | 632 |
| 111 | 633 if (flag_debug_asm && comment) |
| 0 | 634 { |
| 111 | 635 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); |
| 0 | 636 vfprintf (asm_out_file, comment, ap); |
| 637 } | |
| 638 } | |
| 111 | 639 else |
| 640 { | |
| 641 unsigned HOST_WIDE_INT work = value; | |
| 642 const char *byte_op = targetm.asm_out.byte_op; | |
| 643 | |
| 644 if (byte_op) | |
| 645 fputs (byte_op, asm_out_file); | |
| 646 do | |
| 647 { | |
| 648 int byte = (work & 0x7f); | |
| 649 work >>= 7; | |
| 650 if (work != 0) | |
| 651 /* More bytes to follow. */ | |
| 652 byte |= 0x80; | |
| 653 | |
| 654 if (byte_op) | |
| 655 { | |
| 656 fprintf (asm_out_file, "%#x", byte); | |
| 657 if (work != 0) | |
| 658 fputc (',', asm_out_file); | |
| 659 } | |
| 660 else | |
| 661 assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1); | |
| 662 } | |
| 663 while (work != 0); | |
| 664 | |
| 665 if (flag_debug_asm) | |
| 666 { | |
| 667 fprintf (asm_out_file, "\t%s uleb128 " HOST_WIDE_INT_PRINT_HEX, | |
| 668 ASM_COMMENT_START, value); | |
| 669 if (comment) | |
| 670 { | |
| 671 fputs ("; ", asm_out_file); | |
| 672 vfprintf (asm_out_file, comment, ap); | |
| 673 } | |
| 674 } | |
| 675 } | |
| 676 | |
| 677 putc ('\n', asm_out_file); | |
| 0 | 678 |
| 679 va_end (ap); | |
| 680 } | |
| 681 | |
| 682 /* Output an signed LEB128 quantity, but only the byte values. */ | |
| 683 | |
| 684 void | |
| 685 dw2_asm_output_data_sleb128_raw (HOST_WIDE_INT value) | |
| 686 { | |
| 687 int byte, more; | |
| 688 | |
| 689 while (1) | |
| 690 { | |
| 691 byte = (value & 0x7f); | |
| 692 value >>= 7; | |
| 693 more = !((value == 0 && (byte & 0x40) == 0) | |
| 694 || (value == -1 && (byte & 0x40) != 0)); | |
| 695 if (more) | |
| 696 byte |= 0x80; | |
| 697 | |
|
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698 fprintf (asm_out_file, "%#x", byte); |
| 0 | 699 if (!more) |
| 700 break; | |
| 701 fputc (',', asm_out_file); | |
| 702 } | |
| 703 } | |
| 704 | |
| 705 /* Output a signed LEB128 quantity. */ | |
| 706 | |
| 707 void | |
| 708 dw2_asm_output_data_sleb128 (HOST_WIDE_INT value, | |
| 709 const char *comment, ...) | |
| 710 { | |
| 711 va_list ap; | |
| 712 | |
| 713 va_start (ap, comment); | |
| 714 | |
| 111 | 715 if (HAVE_AS_LEB128) |
| 0 | 716 { |
| 111 | 717 fprintf (asm_out_file, "\t.sleb128 " HOST_WIDE_INT_PRINT_DEC, value); |
| 0 | 718 |
| 111 | 719 if (flag_debug_asm && comment) |
| 0 | 720 { |
| 111 | 721 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); |
| 0 | 722 vfprintf (asm_out_file, comment, ap); |
| 723 } | |
| 724 } | |
| 111 | 725 else |
| 726 { | |
| 727 HOST_WIDE_INT work = value; | |
| 728 int more, byte; | |
| 729 const char *byte_op = targetm.asm_out.byte_op; | |
| 730 | |
| 731 if (byte_op) | |
| 732 fputs (byte_op, asm_out_file); | |
| 733 do | |
| 734 { | |
| 735 byte = (work & 0x7f); | |
| 736 /* arithmetic shift */ | |
| 737 work >>= 7; | |
| 738 more = !((work == 0 && (byte & 0x40) == 0) | |
| 739 || (work == -1 && (byte & 0x40) != 0)); | |
| 740 if (more) | |
| 741 byte |= 0x80; | |
| 742 | |
| 743 if (byte_op) | |
| 744 { | |
| 745 fprintf (asm_out_file, "%#x", byte); | |
| 746 if (more) | |
| 747 fputc (',', asm_out_file); | |
| 748 } | |
| 749 else | |
| 750 assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1); | |
| 751 } | |
| 752 while (more); | |
| 753 | |
| 754 if (flag_debug_asm) | |
| 755 { | |
| 756 fprintf (asm_out_file, "\t%s sleb128 " HOST_WIDE_INT_PRINT_DEC, | |
| 757 ASM_COMMENT_START, value); | |
| 758 if (comment) | |
| 759 { | |
| 760 fputs ("; ", asm_out_file); | |
| 761 vfprintf (asm_out_file, comment, ap); | |
| 762 } | |
| 763 } | |
| 764 } | |
| 765 | |
| 0 | 766 fputc ('\n', asm_out_file); |
| 767 | |
| 768 va_end (ap); | |
| 769 } | |
| 770 | |
| 131 | 771 /* Output symbol LAB1 as an unsigned LEB128 quantity. LAB1 should be |
| 772 an assembler-computed constant, e.g. a view number, because we | |
| 773 can't have relocations in LEB128 quantities. */ | |
| 774 | |
| 775 void | |
| 776 dw2_asm_output_symname_uleb128 (const char *lab1 ATTRIBUTE_UNUSED, | |
| 777 const char *comment, ...) | |
| 778 { | |
| 779 va_list ap; | |
| 780 | |
| 781 va_start (ap, comment); | |
| 782 | |
| 783 #ifdef HAVE_AS_LEB128 | |
| 784 fputs ("\t.uleb128 ", asm_out_file); | |
| 785 assemble_name (asm_out_file, lab1); | |
| 786 #else | |
| 787 gcc_unreachable (); | |
| 788 #endif | |
| 789 | |
| 790 if (flag_debug_asm && comment) | |
| 791 { | |
| 792 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 793 vfprintf (asm_out_file, comment, ap); | |
| 794 } | |
| 795 fputc ('\n', asm_out_file); | |
| 796 | |
| 797 va_end (ap); | |
| 798 } | |
| 799 | |
| 0 | 800 void |
| 801 dw2_asm_output_delta_uleb128 (const char *lab1 ATTRIBUTE_UNUSED, | |
| 802 const char *lab2 ATTRIBUTE_UNUSED, | |
| 803 const char *comment, ...) | |
| 804 { | |
| 805 va_list ap; | |
| 806 | |
| 807 va_start (ap, comment); | |
| 808 | |
| 111 | 809 gcc_assert (HAVE_AS_LEB128); |
| 810 | |
| 0 | 811 fputs ("\t.uleb128 ", asm_out_file); |
| 812 assemble_name (asm_out_file, lab1); | |
| 111 | 813 putc ('-', asm_out_file); |
| 131 | 814 /* dwarf2out.c might give us a label expression (e.g. .LVL548-1) |
| 815 as second argument. If so, make it a subexpression, to make | |
| 816 sure the substraction is done in the right order. */ | |
| 817 if (strchr (lab2, '-') != NULL) | |
| 818 { | |
| 819 putc ('(', asm_out_file); | |
| 820 assemble_name (asm_out_file, lab2); | |
| 821 putc (')', asm_out_file); | |
| 822 } | |
| 823 else | |
| 824 assemble_name (asm_out_file, lab2); | |
| 0 | 825 |
| 826 if (flag_debug_asm && comment) | |
| 827 { | |
| 828 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 829 vfprintf (asm_out_file, comment, ap); | |
| 830 } | |
| 831 fputc ('\n', asm_out_file); | |
| 832 | |
| 833 va_end (ap); | |
| 834 } | |
| 835 | |
| 836 #if 0 | |
| 837 | |
| 838 void | |
| 839 dw2_asm_output_delta_sleb128 (const char *lab1 ATTRIBUTE_UNUSED, | |
| 840 const char *lab2 ATTRIBUTE_UNUSED, | |
| 841 const char *comment, ...) | |
| 842 { | |
| 843 va_list ap; | |
| 844 | |
| 845 va_start (ap, comment); | |
| 846 | |
| 111 | 847 gcc_assert (HAVE_AS_LEB128); |
| 848 | |
| 0 | 849 fputs ("\t.sleb128 ", asm_out_file); |
| 850 assemble_name (asm_out_file, lab1); | |
| 111 | 851 putc ('-', asm_out_file); |
| 0 | 852 assemble_name (asm_out_file, lab2); |
| 853 | |
| 854 if (flag_debug_asm && comment) | |
| 855 { | |
| 856 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 857 vfprintf (asm_out_file, comment, ap); | |
| 858 } | |
| 859 fputc ('\n', asm_out_file); | |
| 860 | |
| 861 va_end (ap); | |
| 862 } | |
| 863 #endif /* 0 */ | |
| 864 | |
| 111 | 865 static GTY(()) hash_map<const char *, tree> *indirect_pool; |
| 0 | 866 |
| 867 static GTY(()) int dw2_const_labelno; | |
| 868 | |
|
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869 #if defined(HAVE_GAS_HIDDEN) |
| 111 | 870 # define USE_LINKONCE_INDIRECT (SUPPORTS_ONE_ONLY && !XCOFF_DEBUGGING_INFO) |
| 0 | 871 #else |
| 872 # define USE_LINKONCE_INDIRECT 0 | |
| 873 #endif | |
| 874 | |
| 111 | 875 /* Compare two std::pair<const char *, tree> by their first element. |
| 876 Returns <0, 0, or | |
| 0 | 877 >0 to indicate whether K1 is less than, equal to, or greater than |
| 878 K2, respectively. */ | |
| 879 | |
| 880 static int | |
| 111 | 881 compare_strings (const void *a, const void *b) |
| 0 | 882 { |
| 111 | 883 const char *s1 = ((const std::pair<const char *, tree> *) a)->first; |
| 884 const char *s2 = ((const std::pair<const char *, tree> *) b)->first; | |
| 0 | 885 int ret; |
| 886 | |
| 887 if (s1 == s2) | |
| 888 return 0; | |
| 889 | |
| 890 ret = strcmp (s1, s2); | |
| 891 | |
| 892 /* The strings are always those from IDENTIFIER_NODEs, and, | |
| 893 therefore, we should never have two copies of the same | |
| 894 string. */ | |
| 895 gcc_assert (ret); | |
| 896 | |
| 897 return ret; | |
| 898 } | |
| 899 | |
| 900 /* Put X, a SYMBOL_REF, in memory. Return a SYMBOL_REF to the allocated | |
| 901 memory. Differs from force_const_mem in that a single pool is used for | |
| 902 the entire unit of translation, and the memory is not guaranteed to be | |
| 903 "near" the function in any interesting sense. IS_PUBLIC controls whether | |
| 904 the symbol can be shared across the entire application (or DSO). */ | |
| 905 | |
| 906 rtx | |
| 907 dw2_force_const_mem (rtx x, bool is_public) | |
| 908 { | |
| 909 const char *key; | |
|
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910 tree decl_id; |
| 0 | 911 |
| 912 if (! indirect_pool) | |
| 111 | 913 indirect_pool = hash_map<const char *, tree>::create_ggc (64); |
| 0 | 914 |
| 915 gcc_assert (GET_CODE (x) == SYMBOL_REF); | |
| 916 | |
| 917 key = XSTR (x, 0); | |
| 111 | 918 tree *slot = indirect_pool->get (key); |
| 919 if (slot) | |
| 920 decl_id = *slot; | |
| 0 | 921 else |
| 922 { | |
| 923 tree id; | |
| 924 const char *str = targetm.strip_name_encoding (key); | |
| 925 | |
| 926 if (is_public && USE_LINKONCE_INDIRECT) | |
| 927 { | |
| 928 char *ref_name = XALLOCAVEC (char, strlen (str) + sizeof "DW.ref."); | |
| 929 | |
| 930 sprintf (ref_name, "DW.ref.%s", str); | |
|
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931 gcc_assert (!maybe_get_identifier (ref_name)); |
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932 decl_id = get_identifier (ref_name); |
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933 TREE_PUBLIC (decl_id) = 1; |
| 0 | 934 } |
| 935 else | |
| 936 { | |
| 937 char label[32]; | |
| 938 | |
| 939 ASM_GENERATE_INTERNAL_LABEL (label, "LDFCM", dw2_const_labelno); | |
| 940 ++dw2_const_labelno; | |
|
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941 gcc_assert (!maybe_get_identifier (label)); |
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942 decl_id = get_identifier (label); |
| 0 | 943 } |
| 944 | |
| 945 id = maybe_get_identifier (str); | |
| 946 if (id) | |
| 947 TREE_SYMBOL_REFERENCED (id) = 1; | |
| 948 | |
| 111 | 949 indirect_pool->put (key, decl_id); |
| 0 | 950 } |
| 951 | |
|
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952 return gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (decl_id)); |
| 0 | 953 } |
| 954 | |
| 111 | 955 /* A helper function for dw2_output_indirect_constants. Emit one queued |
| 956 constant to memory. */ | |
| 0 | 957 |
| 958 static int | |
| 111 | 959 dw2_output_indirect_constant_1 (const char *sym, tree id) |
| 0 | 960 { |
| 961 rtx sym_ref; | |
| 111 | 962 tree decl; |
|
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963 |
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964 decl = build_decl (UNKNOWN_LOCATION, VAR_DECL, id, ptr_type_node); |
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965 SET_DECL_ASSEMBLER_NAME (decl, id); |
|
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966 DECL_ARTIFICIAL (decl) = 1; |
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967 DECL_IGNORED_P (decl) = 1; |
| 131 | 968 DECL_INITIAL (decl) = build_fold_addr_expr (decl); |
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969 TREE_READONLY (decl) = 1; |
| 111 | 970 TREE_STATIC (decl) = 1; |
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971 |
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972 if (TREE_PUBLIC (id)) |
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973 { |
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974 TREE_PUBLIC (decl) = 1; |
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975 make_decl_one_only (decl, DECL_ASSEMBLER_NAME (decl)); |
| 111 | 976 if (USE_LINKONCE_INDIRECT) |
| 977 DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN; | |
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978 } |
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979 |
| 0 | 980 sym_ref = gen_rtx_SYMBOL_REF (Pmode, sym); |
| 131 | 981 /* Disable ASan for decl because redzones cause ABI breakage between GCC and |
| 982 libstdc++ for `.LDFCM*' variables. See PR 78651 for details. */ | |
| 983 unsigned int save_flag_sanitize = flag_sanitize; | |
| 984 flag_sanitize &= ~(SANITIZE_ADDRESS | SANITIZE_USER_ADDRESS | |
| 985 | SANITIZE_KERNEL_ADDRESS); | |
| 986 /* And also temporarily disable -fsection-anchors. These indirect constants | |
| 987 are never referenced from code, so it doesn't make any sense to aggregate | |
| 988 them in blocks. */ | |
| 989 int save_flag_section_anchors = flag_section_anchors; | |
| 990 flag_section_anchors = 0; | |
| 0 | 991 assemble_variable (decl, 1, 1, 1); |
| 131 | 992 flag_section_anchors = save_flag_section_anchors; |
| 993 flag_sanitize = save_flag_sanitize; | |
| 111 | 994 assemble_integer (sym_ref, POINTER_SIZE_UNITS, POINTER_SIZE, 1); |
| 131 | 995 /* The following is a hack recognized by use_blocks_for_decl_p to disable |
| 996 section anchor handling of the decl. */ | |
| 997 DECL_INITIAL (decl) = decl; | |
| 0 | 998 |
| 999 return 0; | |
| 1000 } | |
| 1001 | |
| 1002 /* Emit the constants queued through dw2_force_const_mem. */ | |
| 1003 | |
| 1004 void | |
| 1005 dw2_output_indirect_constants (void) | |
| 1006 { | |
| 111 | 1007 if (!indirect_pool) |
| 1008 return; | |
| 1009 | |
| 1010 auto_vec<std::pair<const char *, tree> > temp (indirect_pool->elements ()); | |
| 1011 for (hash_map<const char *, tree>::iterator iter = indirect_pool->begin (); | |
| 1012 iter != indirect_pool->end (); ++iter) | |
| 1013 temp.quick_push (*iter); | |
| 1014 | |
| 1015 temp.qsort (compare_strings); | |
| 1016 | |
| 1017 for (unsigned int i = 0; i < temp.length (); i++) | |
| 1018 dw2_output_indirect_constant_1 (temp[i].first, temp[i].second); | |
| 0 | 1019 } |
| 1020 | |
| 1021 /* Like dw2_asm_output_addr_rtx, but encode the pointer as directed. | |
| 1022 If PUBLIC is set and the encoding is DW_EH_PE_indirect, the indirect | |
| 1023 reference is shared across the entire application (or DSO). */ | |
| 1024 | |
| 1025 void | |
| 1026 dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr, bool is_public, | |
| 1027 const char *comment, ...) | |
| 1028 { | |
| 1029 int size; | |
| 1030 va_list ap; | |
| 1031 | |
| 1032 va_start (ap, comment); | |
| 1033 | |
| 1034 size = size_of_encoded_value (encoding); | |
| 1035 | |
| 1036 if (encoding == DW_EH_PE_aligned) | |
| 1037 { | |
| 1038 assemble_align (POINTER_SIZE); | |
| 1039 assemble_integer (addr, size, POINTER_SIZE, 1); | |
| 111 | 1040 va_end (ap); |
| 0 | 1041 return; |
| 1042 } | |
| 1043 | |
| 1044 /* NULL is _always_ represented as a plain zero, as is 1 for Ada's | |
| 1045 "all others". */ | |
| 1046 if (addr == const0_rtx || addr == const1_rtx) | |
| 1047 assemble_integer (addr, size, BITS_PER_UNIT, 1); | |
| 1048 else | |
| 1049 { | |
| 1050 restart: | |
| 1051 /* Allow the target first crack at emitting this. Some of the | |
| 1052 special relocations require special directives instead of | |
| 1053 just ".4byte" or whatever. */ | |
| 1054 #ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
| 1055 ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX (asm_out_file, encoding, size, | |
| 1056 addr, done); | |
| 1057 #endif | |
| 1058 | |
| 1059 /* Indirection is used to get dynamic relocations out of a | |
| 1060 read-only section. */ | |
| 1061 if (encoding & DW_EH_PE_indirect) | |
| 1062 { | |
| 1063 /* It is very tempting to use force_const_mem so that we share data | |
| 1064 with the normal constant pool. However, we've already emitted | |
| 1065 the constant pool for this function. Moreover, we'd like to | |
| 1066 share these constants across the entire unit of translation and | |
| 1067 even, if possible, across the entire application (or DSO). */ | |
| 1068 addr = dw2_force_const_mem (addr, is_public); | |
| 1069 encoding &= ~DW_EH_PE_indirect; | |
| 1070 goto restart; | |
| 1071 } | |
| 1072 | |
| 1073 switch (encoding & 0xF0) | |
| 1074 { | |
| 1075 case DW_EH_PE_absptr: | |
| 1076 dw2_assemble_integer (size, addr); | |
| 1077 break; | |
| 1078 | |
| 111 | 1079 #ifdef ASM_OUTPUT_DWARF_DATAREL |
| 1080 case DW_EH_PE_datarel: | |
| 1081 gcc_assert (GET_CODE (addr) == SYMBOL_REF); | |
| 1082 ASM_OUTPUT_DWARF_DATAREL (asm_out_file, size, XSTR (addr, 0)); | |
| 1083 break; | |
| 1084 #endif | |
| 1085 | |
| 0 | 1086 case DW_EH_PE_pcrel: |
| 1087 gcc_assert (GET_CODE (addr) == SYMBOL_REF); | |
| 1088 #ifdef ASM_OUTPUT_DWARF_PCREL | |
| 1089 ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, XSTR (addr, 0)); | |
| 1090 #else | |
| 1091 dw2_assemble_integer (size, gen_rtx_MINUS (Pmode, addr, pc_rtx)); | |
| 1092 #endif | |
| 1093 break; | |
| 1094 | |
| 1095 default: | |
| 1096 /* Other encodings should have been handled by | |
| 1097 ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX. */ | |
| 1098 gcc_unreachable (); | |
| 1099 } | |
| 1100 | |
| 1101 #ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
| 1102 done:; | |
| 1103 #endif | |
| 1104 } | |
| 1105 | |
| 1106 if (flag_debug_asm && comment) | |
| 1107 { | |
| 1108 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 1109 vfprintf (asm_out_file, comment, ap); | |
| 1110 } | |
| 1111 fputc ('\n', asm_out_file); | |
| 1112 | |
| 1113 va_end (ap); | |
| 1114 } | |
| 1115 | |
| 1116 #include "gt-dwarf2asm.h" |