Mercurial > hg > CbC > CbC_gcc
annotate gcc/dwarf2asm.c @ 108:7ad14f446135
add CbC-example/rectypeTest/
| author | Nobuyasu Oshiro <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 14 Jun 2012 20:30:24 +0900 |
| parents | f6334be47118 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Dwarf2 assembler output helper routines. |
|
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2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010 |
| 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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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) | |
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83 fprintf (asm_out_file, "%#x,", bytes[i]); |
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84 fprintf (asm_out_file, "%#x", bytes[0]); |
| 0 | 85 } |
| 86 else | |
| 87 { | |
| 88 for (i = 0; i < size - 1; ++i) | |
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89 fprintf (asm_out_file, "%#x,", bytes[i]); |
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90 fprintf (asm_out_file, "%#x", bytes[i]); |
| 0 | 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 | |
|
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155 /* Output the difference between two symbols in instruction units |
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156 in a given size. */ |
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157 |
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158 void |
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159 dw2_asm_output_vms_delta (int size ATTRIBUTE_UNUSED, |
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160 const char *lab1, const char *lab2, |
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161 const char *comment, ...) |
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162 { |
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163 va_list ap; |
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164 |
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165 va_start (ap, comment); |
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166 |
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167 #ifndef ASM_OUTPUT_DWARF_VMS_DELTA |
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168 /* VMS Delta is only special on ia64-vms, but this funtion also gets |
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169 called on alpha-vms so it has to do something sane. */ |
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170 dw2_asm_output_delta (size, lab1, lab2, comment); |
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171 #else |
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172 ASM_OUTPUT_DWARF_VMS_DELTA (asm_out_file, size, lab1, lab2); |
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173 if (flag_debug_asm && comment) |
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174 { |
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175 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); |
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176 vfprintf (asm_out_file, comment, ap); |
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177 } |
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178 fputc ('\n', asm_out_file); |
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179 #endif |
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180 |
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181 va_end (ap); |
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182 } |
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183 |
| 0 | 184 /* Output a section-relative reference to a LABEL, which was placed in |
| 185 BASE. In general this can only be done for debugging symbols. | |
| 186 E.g. on most targets with the GNU linker, this is accomplished with | |
| 187 a direct reference and the knowledge that the debugging section | |
| 188 will be placed at VMA 0. Some targets have special relocations for | |
| 189 this that we must use. */ | |
| 190 | |
| 191 void | |
| 192 dw2_asm_output_offset (int size, const char *label, | |
| 193 section *base ATTRIBUTE_UNUSED, | |
| 194 const char *comment, ...) | |
| 195 { | |
| 196 va_list ap; | |
| 197 | |
| 198 va_start (ap, comment); | |
| 199 | |
| 200 #ifdef ASM_OUTPUT_DWARF_OFFSET | |
| 201 ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label, base); | |
| 202 #else | |
| 203 dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label)); | |
| 204 #endif | |
| 205 | |
| 206 if (flag_debug_asm && comment) | |
| 207 { | |
| 208 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 209 vfprintf (asm_out_file, comment, ap); | |
| 210 } | |
| 211 fputc ('\n', asm_out_file); | |
| 212 | |
| 213 va_end (ap); | |
| 214 } | |
| 215 | |
| 216 #if 0 | |
| 217 | |
| 218 /* Output a self-relative reference to a label, possibly in a | |
| 219 different section or object file. */ | |
| 220 | |
| 221 void | |
| 222 dw2_asm_output_pcrel (int size ATTRIBUTE_UNUSED, | |
| 223 const char *label ATTRIBUTE_UNUSED, | |
| 224 const char *comment, ...) | |
| 225 { | |
| 226 va_list ap; | |
| 227 | |
| 228 va_start (ap, comment); | |
| 229 | |
| 230 #ifdef ASM_OUTPUT_DWARF_PCREL | |
| 231 ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, label); | |
| 232 #else | |
| 233 dw2_assemble_integer (size, | |
| 234 gen_rtx_MINUS (Pmode, | |
| 235 gen_rtx_SYMBOL_REF (Pmode, label), | |
| 236 pc_rtx)); | |
| 237 #endif | |
| 238 | |
| 239 if (flag_debug_asm && comment) | |
| 240 { | |
| 241 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 242 vfprintf (asm_out_file, comment, ap); | |
| 243 } | |
| 244 fputc ('\n', asm_out_file); | |
| 245 | |
| 246 va_end (ap); | |
| 247 } | |
| 248 #endif /* 0 */ | |
| 249 | |
| 250 /* Output an absolute reference to a label. */ | |
| 251 | |
| 252 void | |
| 253 dw2_asm_output_addr (int size, const char *label, | |
| 254 const char *comment, ...) | |
| 255 { | |
| 256 va_list ap; | |
| 257 | |
| 258 va_start (ap, comment); | |
| 259 | |
| 260 dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label)); | |
| 261 | |
| 262 if (flag_debug_asm && comment) | |
| 263 { | |
| 264 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 265 vfprintf (asm_out_file, comment, ap); | |
| 266 } | |
| 267 fputc ('\n', asm_out_file); | |
| 268 | |
| 269 va_end (ap); | |
| 270 } | |
| 271 | |
| 272 /* Similar, but use an RTX expression instead of a text label. */ | |
| 273 | |
| 274 void | |
| 275 dw2_asm_output_addr_rtx (int size, rtx addr, | |
| 276 const char *comment, ...) | |
| 277 { | |
| 278 va_list ap; | |
| 279 | |
| 280 va_start (ap, comment); | |
| 281 | |
| 282 dw2_assemble_integer (size, addr); | |
| 283 | |
| 284 if (flag_debug_asm && comment) | |
| 285 { | |
| 286 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 287 vfprintf (asm_out_file, comment, ap); | |
| 288 } | |
| 289 fputc ('\n', asm_out_file); | |
| 290 | |
| 291 va_end (ap); | |
| 292 } | |
| 293 | |
| 294 /* Output the first ORIG_LEN characters of STR as a string. | |
| 295 If ORIG_LEN is equal to -1, ignore this parameter and output | |
| 296 the entire STR instead. | |
| 297 If COMMENT is not NULL and comments in the debug information | |
| 298 have been requested by the user, append the given COMMENT | |
| 299 to the generated output. */ | |
|
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300 |
| 0 | 301 void |
| 302 dw2_asm_output_nstring (const char *str, size_t orig_len, | |
| 303 const char *comment, ...) | |
| 304 { | |
| 305 size_t i, len; | |
| 306 va_list ap; | |
| 307 | |
| 308 va_start (ap, comment); | |
| 309 | |
| 310 len = orig_len; | |
| 311 | |
| 312 if (len == (size_t) -1) | |
| 313 len = strlen (str); | |
| 314 | |
| 315 if (flag_debug_asm && comment) | |
| 316 { | |
| 317 fputs ("\t.ascii \"", asm_out_file); | |
| 318 for (i = 0; i < len; i++) | |
| 319 { | |
| 320 int c = str[i]; | |
| 321 if (c == '\"' || c == '\\') | |
| 322 fputc ('\\', asm_out_file); | |
| 323 if (ISPRINT(c)) | |
| 324 fputc (c, asm_out_file); | |
| 325 else | |
| 326 fprintf (asm_out_file, "\\%o", c); | |
| 327 } | |
| 328 fprintf (asm_out_file, "\\0\"\t%s ", ASM_COMMENT_START); | |
| 329 vfprintf (asm_out_file, comment, ap); | |
| 330 fputc ('\n', asm_out_file); | |
| 331 } | |
| 332 else | |
| 333 { | |
| 334 /* If an explicit length was given, we can't assume there | |
| 335 is a null termination in the string buffer. */ | |
| 336 if (orig_len == (size_t) -1) | |
| 337 len += 1; | |
| 338 ASM_OUTPUT_ASCII (asm_out_file, str, len); | |
| 339 if (orig_len != (size_t) -1) | |
| 340 assemble_integer (const0_rtx, 1, BITS_PER_UNIT, 1); | |
| 341 } | |
| 342 | |
| 343 va_end (ap); | |
| 344 } | |
| 345 | |
| 346 | |
| 347 /* Return the size of an unsigned LEB128 quantity. */ | |
| 348 | |
| 349 int | |
| 350 size_of_uleb128 (unsigned HOST_WIDE_INT value) | |
| 351 { | |
| 352 int size = 0; | |
| 353 | |
| 354 do | |
| 355 { | |
| 356 value >>= 7; | |
| 357 size += 1; | |
| 358 } | |
| 359 while (value != 0); | |
| 360 | |
| 361 return size; | |
| 362 } | |
| 363 | |
| 364 /* Return the size of a signed LEB128 quantity. */ | |
| 365 | |
| 366 int | |
| 367 size_of_sleb128 (HOST_WIDE_INT value) | |
| 368 { | |
| 369 int size = 0, byte; | |
| 370 | |
| 371 do | |
| 372 { | |
| 373 byte = (value & 0x7f); | |
| 374 value >>= 7; | |
| 375 size += 1; | |
| 376 } | |
| 377 while (!((value == 0 && (byte & 0x40) == 0) | |
| 378 || (value == -1 && (byte & 0x40) != 0))); | |
| 379 | |
| 380 return size; | |
| 381 } | |
| 382 | |
| 383 /* Given an encoding, return the number of bytes the format occupies. | |
| 384 This is only defined for fixed-size encodings, and so does not | |
| 385 include leb128. */ | |
| 386 | |
| 387 int | |
| 388 size_of_encoded_value (int encoding) | |
| 389 { | |
| 390 if (encoding == DW_EH_PE_omit) | |
| 391 return 0; | |
| 392 | |
| 393 switch (encoding & 0x07) | |
| 394 { | |
| 395 case DW_EH_PE_absptr: | |
| 396 return POINTER_SIZE / BITS_PER_UNIT; | |
| 397 case DW_EH_PE_udata2: | |
| 398 return 2; | |
| 399 case DW_EH_PE_udata4: | |
| 400 return 4; | |
| 401 case DW_EH_PE_udata8: | |
| 402 return 8; | |
| 403 default: | |
| 404 gcc_unreachable (); | |
| 405 } | |
| 406 } | |
| 407 | |
| 408 /* Yield a name for a given pointer encoding. */ | |
| 409 | |
| 410 const char * | |
| 411 eh_data_format_name (int format) | |
| 412 { | |
| 413 #if HAVE_DESIGNATED_INITIALIZERS | |
| 414 #define S(p, v) [p] = v, | |
| 415 #else | |
| 416 #define S(p, v) case p: return v; | |
| 417 #endif | |
| 418 | |
| 419 #if HAVE_DESIGNATED_INITIALIZERS | |
| 420 __extension__ static const char * const format_names[256] = { | |
| 421 #else | |
| 422 switch (format) { | |
| 423 #endif | |
| 424 | |
| 425 S(DW_EH_PE_absptr, "absolute") | |
| 426 S(DW_EH_PE_omit, "omit") | |
| 427 S(DW_EH_PE_aligned, "aligned absolute") | |
| 428 | |
| 429 S(DW_EH_PE_uleb128, "uleb128") | |
| 430 S(DW_EH_PE_udata2, "udata2") | |
| 431 S(DW_EH_PE_udata4, "udata4") | |
| 432 S(DW_EH_PE_udata8, "udata8") | |
| 433 S(DW_EH_PE_sleb128, "sleb128") | |
| 434 S(DW_EH_PE_sdata2, "sdata2") | |
| 435 S(DW_EH_PE_sdata4, "sdata4") | |
| 436 S(DW_EH_PE_sdata8, "sdata8") | |
| 437 | |
| 438 S(DW_EH_PE_absptr | DW_EH_PE_pcrel, "pcrel") | |
| 439 S(DW_EH_PE_uleb128 | DW_EH_PE_pcrel, "pcrel uleb128") | |
| 440 S(DW_EH_PE_udata2 | DW_EH_PE_pcrel, "pcrel udata2") | |
| 441 S(DW_EH_PE_udata4 | DW_EH_PE_pcrel, "pcrel udata4") | |
| 442 S(DW_EH_PE_udata8 | DW_EH_PE_pcrel, "pcrel udata8") | |
| 443 S(DW_EH_PE_sleb128 | DW_EH_PE_pcrel, "pcrel sleb128") | |
| 444 S(DW_EH_PE_sdata2 | DW_EH_PE_pcrel, "pcrel sdata2") | |
| 445 S(DW_EH_PE_sdata4 | DW_EH_PE_pcrel, "pcrel sdata4") | |
| 446 S(DW_EH_PE_sdata8 | DW_EH_PE_pcrel, "pcrel sdata8") | |
| 447 | |
| 448 S(DW_EH_PE_absptr | DW_EH_PE_textrel, "textrel") | |
| 449 S(DW_EH_PE_uleb128 | DW_EH_PE_textrel, "textrel uleb128") | |
| 450 S(DW_EH_PE_udata2 | DW_EH_PE_textrel, "textrel udata2") | |
| 451 S(DW_EH_PE_udata4 | DW_EH_PE_textrel, "textrel udata4") | |
| 452 S(DW_EH_PE_udata8 | DW_EH_PE_textrel, "textrel udata8") | |
| 453 S(DW_EH_PE_sleb128 | DW_EH_PE_textrel, "textrel sleb128") | |
| 454 S(DW_EH_PE_sdata2 | DW_EH_PE_textrel, "textrel sdata2") | |
| 455 S(DW_EH_PE_sdata4 | DW_EH_PE_textrel, "textrel sdata4") | |
| 456 S(DW_EH_PE_sdata8 | DW_EH_PE_textrel, "textrel sdata8") | |
| 457 | |
| 458 S(DW_EH_PE_absptr | DW_EH_PE_datarel, "datarel") | |
| 459 S(DW_EH_PE_uleb128 | DW_EH_PE_datarel, "datarel uleb128") | |
| 460 S(DW_EH_PE_udata2 | DW_EH_PE_datarel, "datarel udata2") | |
| 461 S(DW_EH_PE_udata4 | DW_EH_PE_datarel, "datarel udata4") | |
| 462 S(DW_EH_PE_udata8 | DW_EH_PE_datarel, "datarel udata8") | |
| 463 S(DW_EH_PE_sleb128 | DW_EH_PE_datarel, "datarel sleb128") | |
| 464 S(DW_EH_PE_sdata2 | DW_EH_PE_datarel, "datarel sdata2") | |
| 465 S(DW_EH_PE_sdata4 | DW_EH_PE_datarel, "datarel sdata4") | |
| 466 S(DW_EH_PE_sdata8 | DW_EH_PE_datarel, "datarel sdata8") | |
| 467 | |
| 468 S(DW_EH_PE_absptr | DW_EH_PE_funcrel, "funcrel") | |
| 469 S(DW_EH_PE_uleb128 | DW_EH_PE_funcrel, "funcrel uleb128") | |
| 470 S(DW_EH_PE_udata2 | DW_EH_PE_funcrel, "funcrel udata2") | |
| 471 S(DW_EH_PE_udata4 | DW_EH_PE_funcrel, "funcrel udata4") | |
| 472 S(DW_EH_PE_udata8 | DW_EH_PE_funcrel, "funcrel udata8") | |
| 473 S(DW_EH_PE_sleb128 | DW_EH_PE_funcrel, "funcrel sleb128") | |
| 474 S(DW_EH_PE_sdata2 | DW_EH_PE_funcrel, "funcrel sdata2") | |
| 475 S(DW_EH_PE_sdata4 | DW_EH_PE_funcrel, "funcrel sdata4") | |
| 476 S(DW_EH_PE_sdata8 | DW_EH_PE_funcrel, "funcrel sdata8") | |
| 477 | |
|
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478 S(DW_EH_PE_indirect | DW_EH_PE_absptr, "indirect absolute") |
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479 |
| 0 | 480 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_pcrel, |
| 481 "indirect pcrel") | |
| 482 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_pcrel, | |
| 483 "indirect pcrel uleb128") | |
| 484 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_pcrel, | |
| 485 "indirect pcrel udata2") | |
| 486 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_pcrel, | |
| 487 "indirect pcrel udata4") | |
| 488 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_pcrel, | |
| 489 "indirect pcrel udata8") | |
| 490 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_pcrel, | |
| 491 "indirect pcrel sleb128") | |
| 492 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_pcrel, | |
| 493 "indirect pcrel sdata2") | |
| 494 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_pcrel, | |
| 495 "indirect pcrel sdata4") | |
| 496 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_pcrel, | |
| 497 "indirect pcrel sdata8") | |
| 498 | |
| 499 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_textrel, | |
| 500 "indirect textrel") | |
| 501 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_textrel, | |
| 502 "indirect textrel uleb128") | |
| 503 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_textrel, | |
| 504 "indirect textrel udata2") | |
| 505 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_textrel, | |
| 506 "indirect textrel udata4") | |
| 507 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_textrel, | |
| 508 "indirect textrel udata8") | |
| 509 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_textrel, | |
| 510 "indirect textrel sleb128") | |
| 511 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_textrel, | |
| 512 "indirect textrel sdata2") | |
| 513 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_textrel, | |
| 514 "indirect textrel sdata4") | |
| 515 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_textrel, | |
| 516 "indirect textrel sdata8") | |
| 517 | |
| 518 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_datarel, | |
| 519 "indirect datarel") | |
| 520 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_datarel, | |
| 521 "indirect datarel uleb128") | |
| 522 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_datarel, | |
| 523 "indirect datarel udata2") | |
| 524 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_datarel, | |
| 525 "indirect datarel udata4") | |
| 526 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_datarel, | |
| 527 "indirect datarel udata8") | |
| 528 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_datarel, | |
| 529 "indirect datarel sleb128") | |
| 530 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_datarel, | |
| 531 "indirect datarel sdata2") | |
| 532 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_datarel, | |
| 533 "indirect datarel sdata4") | |
| 534 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_datarel, | |
| 535 "indirect datarel sdata8") | |
| 536 | |
| 537 S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_funcrel, | |
| 538 "indirect funcrel") | |
| 539 S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_funcrel, | |
| 540 "indirect funcrel uleb128") | |
| 541 S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_funcrel, | |
| 542 "indirect funcrel udata2") | |
| 543 S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_funcrel, | |
| 544 "indirect funcrel udata4") | |
| 545 S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_funcrel, | |
| 546 "indirect funcrel udata8") | |
| 547 S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_funcrel, | |
| 548 "indirect funcrel sleb128") | |
| 549 S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_funcrel, | |
| 550 "indirect funcrel sdata2") | |
| 551 S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_funcrel, | |
| 552 "indirect funcrel sdata4") | |
| 553 S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_funcrel, | |
| 554 "indirect funcrel sdata8") | |
| 555 | |
| 556 #if HAVE_DESIGNATED_INITIALIZERS | |
| 557 }; | |
| 558 | |
| 559 gcc_assert (format >= 0 && format < 0x100 && format_names[format]); | |
|
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560 |
| 0 | 561 return format_names[format]; |
| 562 #else | |
| 563 } | |
| 564 gcc_unreachable (); | |
| 565 #endif | |
| 566 } | |
| 567 | |
| 568 /* Output an unsigned LEB128 quantity, but only the byte values. */ | |
| 569 | |
| 570 void | |
| 571 dw2_asm_output_data_uleb128_raw (unsigned HOST_WIDE_INT value) | |
| 572 { | |
| 573 while (1) | |
| 574 { | |
| 575 int byte = (value & 0x7f); | |
| 576 value >>= 7; | |
| 577 if (value != 0) | |
| 578 /* More bytes to follow. */ | |
| 579 byte |= 0x80; | |
| 580 | |
|
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581 fprintf (asm_out_file, "%#x", byte); |
| 0 | 582 if (value == 0) |
| 583 break; | |
| 584 fputc (',', asm_out_file); | |
| 585 } | |
| 586 } | |
| 587 | |
| 588 /* Output an unsigned LEB128 quantity. */ | |
| 589 | |
| 590 void | |
| 591 dw2_asm_output_data_uleb128 (unsigned HOST_WIDE_INT value, | |
| 592 const char *comment, ...) | |
| 593 { | |
| 594 va_list ap; | |
| 595 | |
| 596 va_start (ap, comment); | |
| 597 | |
| 598 #ifdef HAVE_AS_LEB128 | |
| 599 fprintf (asm_out_file, "\t.uleb128 " HOST_WIDE_INT_PRINT_HEX , value); | |
| 600 | |
| 601 if (flag_debug_asm && comment) | |
| 602 { | |
| 603 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 604 vfprintf (asm_out_file, comment, ap); | |
| 605 } | |
| 606 #else | |
| 607 { | |
| 608 unsigned HOST_WIDE_INT work = value; | |
| 609 const char *byte_op = targetm.asm_out.byte_op; | |
| 610 | |
| 611 if (byte_op) | |
| 612 fputs (byte_op, asm_out_file); | |
| 613 do | |
| 614 { | |
| 615 int byte = (work & 0x7f); | |
| 616 work >>= 7; | |
| 617 if (work != 0) | |
| 618 /* More bytes to follow. */ | |
| 619 byte |= 0x80; | |
| 620 | |
| 621 if (byte_op) | |
| 622 { | |
|
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623 fprintf (asm_out_file, "%#x", byte); |
| 0 | 624 if (work != 0) |
| 625 fputc (',', asm_out_file); | |
| 626 } | |
| 627 else | |
| 628 assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1); | |
| 629 } | |
| 630 while (work != 0); | |
| 631 | |
| 632 if (flag_debug_asm) | |
| 633 { | |
| 634 fprintf (asm_out_file, "\t%s uleb128 " HOST_WIDE_INT_PRINT_HEX, | |
| 635 ASM_COMMENT_START, value); | |
| 636 if (comment) | |
| 637 { | |
| 638 fputs ("; ", asm_out_file); | |
| 639 vfprintf (asm_out_file, comment, ap); | |
| 640 } | |
| 641 } | |
| 642 } | |
| 643 #endif | |
| 644 fputc ('\n', asm_out_file); | |
| 645 | |
| 646 va_end (ap); | |
| 647 } | |
| 648 | |
| 649 /* Output an signed LEB128 quantity, but only the byte values. */ | |
| 650 | |
| 651 void | |
| 652 dw2_asm_output_data_sleb128_raw (HOST_WIDE_INT value) | |
| 653 { | |
| 654 int byte, more; | |
| 655 | |
| 656 while (1) | |
| 657 { | |
| 658 byte = (value & 0x7f); | |
| 659 value >>= 7; | |
| 660 more = !((value == 0 && (byte & 0x40) == 0) | |
| 661 || (value == -1 && (byte & 0x40) != 0)); | |
| 662 if (more) | |
| 663 byte |= 0x80; | |
| 664 | |
|
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665 fprintf (asm_out_file, "%#x", byte); |
| 0 | 666 if (!more) |
| 667 break; | |
| 668 fputc (',', asm_out_file); | |
| 669 } | |
| 670 } | |
| 671 | |
| 672 /* Output a signed LEB128 quantity. */ | |
| 673 | |
| 674 void | |
| 675 dw2_asm_output_data_sleb128 (HOST_WIDE_INT value, | |
| 676 const char *comment, ...) | |
| 677 { | |
| 678 va_list ap; | |
| 679 | |
| 680 va_start (ap, comment); | |
| 681 | |
| 682 #ifdef HAVE_AS_LEB128 | |
| 683 fprintf (asm_out_file, "\t.sleb128 " HOST_WIDE_INT_PRINT_DEC, value); | |
| 684 | |
| 685 if (flag_debug_asm && comment) | |
| 686 { | |
| 687 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 688 vfprintf (asm_out_file, comment, ap); | |
| 689 } | |
| 690 #else | |
| 691 { | |
| 692 HOST_WIDE_INT work = value; | |
| 693 int more, byte; | |
| 694 const char *byte_op = targetm.asm_out.byte_op; | |
| 695 | |
| 696 if (byte_op) | |
| 697 fputs (byte_op, asm_out_file); | |
| 698 do | |
| 699 { | |
| 700 byte = (work & 0x7f); | |
| 701 /* arithmetic shift */ | |
| 702 work >>= 7; | |
| 703 more = !((work == 0 && (byte & 0x40) == 0) | |
| 704 || (work == -1 && (byte & 0x40) != 0)); | |
| 705 if (more) | |
| 706 byte |= 0x80; | |
| 707 | |
| 708 if (byte_op) | |
| 709 { | |
|
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710 fprintf (asm_out_file, "%#x", byte); |
| 0 | 711 if (more) |
| 712 fputc (',', asm_out_file); | |
| 713 } | |
| 714 else | |
| 715 assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1); | |
| 716 } | |
| 717 while (more); | |
| 718 | |
| 719 if (flag_debug_asm) | |
| 720 { | |
| 721 fprintf (asm_out_file, "\t%s sleb128 " HOST_WIDE_INT_PRINT_DEC, | |
| 722 ASM_COMMENT_START, value); | |
| 723 if (comment) | |
| 724 { | |
| 725 fputs ("; ", asm_out_file); | |
| 726 vfprintf (asm_out_file, comment, ap); | |
| 727 } | |
| 728 } | |
| 729 } | |
| 730 #endif | |
| 731 fputc ('\n', asm_out_file); | |
| 732 | |
| 733 va_end (ap); | |
| 734 } | |
| 735 | |
| 736 void | |
| 737 dw2_asm_output_delta_uleb128 (const char *lab1 ATTRIBUTE_UNUSED, | |
| 738 const char *lab2 ATTRIBUTE_UNUSED, | |
| 739 const char *comment, ...) | |
| 740 { | |
| 741 va_list ap; | |
| 742 | |
| 743 va_start (ap, comment); | |
| 744 | |
| 745 #ifdef HAVE_AS_LEB128 | |
| 746 fputs ("\t.uleb128 ", asm_out_file); | |
| 747 assemble_name (asm_out_file, lab1); | |
| 748 fputc ('-', asm_out_file); | |
| 749 assemble_name (asm_out_file, lab2); | |
| 750 #else | |
| 751 gcc_unreachable (); | |
| 752 #endif | |
| 753 | |
| 754 if (flag_debug_asm && comment) | |
| 755 { | |
| 756 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 757 vfprintf (asm_out_file, comment, ap); | |
| 758 } | |
| 759 fputc ('\n', asm_out_file); | |
| 760 | |
| 761 va_end (ap); | |
| 762 } | |
| 763 | |
| 764 #if 0 | |
| 765 | |
| 766 void | |
| 767 dw2_asm_output_delta_sleb128 (const char *lab1 ATTRIBUTE_UNUSED, | |
| 768 const char *lab2 ATTRIBUTE_UNUSED, | |
| 769 const char *comment, ...) | |
| 770 { | |
| 771 va_list ap; | |
| 772 | |
| 773 va_start (ap, comment); | |
| 774 | |
| 775 #ifdef HAVE_AS_LEB128 | |
| 776 fputs ("\t.sleb128 ", asm_out_file); | |
| 777 assemble_name (asm_out_file, lab1); | |
| 778 fputc ('-', asm_out_file); | |
| 779 assemble_name (asm_out_file, lab2); | |
| 780 #else | |
| 781 gcc_unreachable (); | |
| 782 #endif | |
| 783 | |
| 784 if (flag_debug_asm && comment) | |
| 785 { | |
| 786 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 787 vfprintf (asm_out_file, comment, ap); | |
| 788 } | |
| 789 fputc ('\n', asm_out_file); | |
| 790 | |
| 791 va_end (ap); | |
| 792 } | |
| 793 #endif /* 0 */ | |
| 794 | |
| 795 static int dw2_output_indirect_constant_1 (splay_tree_node, void *); | |
| 796 | |
| 797 static GTY((param1_is (char *), param2_is (tree))) splay_tree indirect_pool; | |
| 798 | |
| 799 static GTY(()) int dw2_const_labelno; | |
| 800 | |
|
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801 #if defined(HAVE_GAS_HIDDEN) |
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802 # define USE_LINKONCE_INDIRECT (SUPPORTS_ONE_ONLY) |
| 0 | 803 #else |
| 804 # define USE_LINKONCE_INDIRECT 0 | |
| 805 #endif | |
| 806 | |
| 807 /* Comparison function for a splay tree in which the keys are strings. | |
| 808 K1 and K2 have the dynamic type "const char *". Returns <0, 0, or | |
| 809 >0 to indicate whether K1 is less than, equal to, or greater than | |
| 810 K2, respectively. */ | |
| 811 | |
| 812 static int | |
| 813 splay_tree_compare_strings (splay_tree_key k1, splay_tree_key k2) | |
| 814 { | |
| 815 const char *s1 = (const char *)k1; | |
| 816 const char *s2 = (const char *)k2; | |
| 817 int ret; | |
| 818 | |
| 819 if (s1 == s2) | |
| 820 return 0; | |
| 821 | |
| 822 ret = strcmp (s1, s2); | |
| 823 | |
| 824 /* The strings are always those from IDENTIFIER_NODEs, and, | |
| 825 therefore, we should never have two copies of the same | |
| 826 string. */ | |
| 827 gcc_assert (ret); | |
| 828 | |
| 829 return ret; | |
| 830 } | |
| 831 | |
| 832 /* Put X, a SYMBOL_REF, in memory. Return a SYMBOL_REF to the allocated | |
| 833 memory. Differs from force_const_mem in that a single pool is used for | |
| 834 the entire unit of translation, and the memory is not guaranteed to be | |
| 835 "near" the function in any interesting sense. IS_PUBLIC controls whether | |
| 836 the symbol can be shared across the entire application (or DSO). */ | |
| 837 | |
| 838 rtx | |
| 839 dw2_force_const_mem (rtx x, bool is_public) | |
| 840 { | |
| 841 splay_tree_node node; | |
| 842 const char *key; | |
|
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843 tree decl_id; |
| 0 | 844 |
| 845 if (! indirect_pool) | |
| 846 /* We use strcmp, rather than just comparing pointers, so that the | |
| 847 sort order will not depend on the host system. */ | |
|
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848 indirect_pool = splay_tree_new_ggc (splay_tree_compare_strings, |
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849 ggc_alloc_splay_tree_str_tree_node_splay_tree_s, |
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850 ggc_alloc_splay_tree_str_tree_node_splay_tree_node_s); |
| 0 | 851 |
| 852 gcc_assert (GET_CODE (x) == SYMBOL_REF); | |
| 853 | |
| 854 key = XSTR (x, 0); | |
| 855 node = splay_tree_lookup (indirect_pool, (splay_tree_key) key); | |
| 856 if (node) | |
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857 decl_id = (tree) node->value; |
| 0 | 858 else |
| 859 { | |
| 860 tree id; | |
| 861 const char *str = targetm.strip_name_encoding (key); | |
| 862 | |
| 863 if (is_public && USE_LINKONCE_INDIRECT) | |
| 864 { | |
| 865 char *ref_name = XALLOCAVEC (char, strlen (str) + sizeof "DW.ref."); | |
| 866 | |
| 867 sprintf (ref_name, "DW.ref.%s", str); | |
|
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868 gcc_assert (!maybe_get_identifier (ref_name)); |
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869 decl_id = get_identifier (ref_name); |
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870 TREE_PUBLIC (decl_id) = 1; |
| 0 | 871 } |
| 872 else | |
| 873 { | |
| 874 char label[32]; | |
| 875 | |
| 876 ASM_GENERATE_INTERNAL_LABEL (label, "LDFCM", dw2_const_labelno); | |
| 877 ++dw2_const_labelno; | |
|
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878 gcc_assert (!maybe_get_identifier (label)); |
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879 decl_id = get_identifier (label); |
| 0 | 880 } |
| 881 | |
| 882 id = maybe_get_identifier (str); | |
| 883 if (id) | |
| 884 TREE_SYMBOL_REFERENCED (id) = 1; | |
| 885 | |
| 886 splay_tree_insert (indirect_pool, (splay_tree_key) key, | |
|
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887 (splay_tree_value) decl_id); |
| 0 | 888 } |
| 889 | |
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890 return gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (decl_id)); |
| 0 | 891 } |
| 892 | |
| 893 /* A helper function for dw2_output_indirect_constants called through | |
| 894 splay_tree_foreach. Emit one queued constant to memory. */ | |
| 895 | |
| 896 static int | |
| 897 dw2_output_indirect_constant_1 (splay_tree_node node, | |
| 898 void *data ATTRIBUTE_UNUSED) | |
| 899 { | |
| 900 const char *sym; | |
| 901 rtx sym_ref; | |
|
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902 tree id, decl; |
| 0 | 903 |
| 904 sym = (const char *) node->key; | |
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905 id = (tree) node->value; |
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906 |
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907 decl = build_decl (UNKNOWN_LOCATION, VAR_DECL, id, ptr_type_node); |
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908 SET_DECL_ASSEMBLER_NAME (decl, id); |
|
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909 DECL_ARTIFICIAL (decl) = 1; |
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910 DECL_IGNORED_P (decl) = 1; |
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911 DECL_INITIAL (decl) = decl; |
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912 TREE_READONLY (decl) = 1; |
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913 |
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914 if (TREE_PUBLIC (id)) |
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915 { |
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916 TREE_PUBLIC (decl) = 1; |
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917 make_decl_one_only (decl, DECL_ASSEMBLER_NAME (decl)); |
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918 } |
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919 else |
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920 TREE_STATIC (decl) = 1; |
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921 |
| 0 | 922 sym_ref = gen_rtx_SYMBOL_REF (Pmode, sym); |
| 923 sym = targetm.strip_name_encoding (sym); | |
| 924 if (TREE_PUBLIC (decl) && USE_LINKONCE_INDIRECT) | |
| 925 fprintf (asm_out_file, "\t.hidden %sDW.ref.%s\n", user_label_prefix, sym); | |
| 926 assemble_variable (decl, 1, 1, 1); | |
| 927 assemble_integer (sym_ref, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1); | |
| 928 | |
| 929 return 0; | |
| 930 } | |
| 931 | |
| 932 /* Emit the constants queued through dw2_force_const_mem. */ | |
| 933 | |
| 934 void | |
| 935 dw2_output_indirect_constants (void) | |
| 936 { | |
| 937 if (indirect_pool) | |
| 938 splay_tree_foreach (indirect_pool, dw2_output_indirect_constant_1, NULL); | |
| 939 } | |
| 940 | |
| 941 /* Like dw2_asm_output_addr_rtx, but encode the pointer as directed. | |
| 942 If PUBLIC is set and the encoding is DW_EH_PE_indirect, the indirect | |
| 943 reference is shared across the entire application (or DSO). */ | |
| 944 | |
| 945 void | |
| 946 dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr, bool is_public, | |
| 947 const char *comment, ...) | |
| 948 { | |
| 949 int size; | |
| 950 va_list ap; | |
| 951 | |
| 952 va_start (ap, comment); | |
| 953 | |
| 954 size = size_of_encoded_value (encoding); | |
| 955 | |
| 956 if (encoding == DW_EH_PE_aligned) | |
| 957 { | |
| 958 assemble_align (POINTER_SIZE); | |
| 959 assemble_integer (addr, size, POINTER_SIZE, 1); | |
| 960 return; | |
| 961 } | |
| 962 | |
| 963 /* NULL is _always_ represented as a plain zero, as is 1 for Ada's | |
| 964 "all others". */ | |
| 965 if (addr == const0_rtx || addr == const1_rtx) | |
| 966 assemble_integer (addr, size, BITS_PER_UNIT, 1); | |
| 967 else | |
| 968 { | |
| 969 restart: | |
| 970 /* Allow the target first crack at emitting this. Some of the | |
| 971 special relocations require special directives instead of | |
| 972 just ".4byte" or whatever. */ | |
| 973 #ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
| 974 ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX (asm_out_file, encoding, size, | |
| 975 addr, done); | |
| 976 #endif | |
| 977 | |
| 978 /* Indirection is used to get dynamic relocations out of a | |
| 979 read-only section. */ | |
| 980 if (encoding & DW_EH_PE_indirect) | |
| 981 { | |
| 982 /* It is very tempting to use force_const_mem so that we share data | |
| 983 with the normal constant pool. However, we've already emitted | |
| 984 the constant pool for this function. Moreover, we'd like to | |
| 985 share these constants across the entire unit of translation and | |
| 986 even, if possible, across the entire application (or DSO). */ | |
| 987 addr = dw2_force_const_mem (addr, is_public); | |
| 988 encoding &= ~DW_EH_PE_indirect; | |
| 989 goto restart; | |
| 990 } | |
| 991 | |
| 992 switch (encoding & 0xF0) | |
| 993 { | |
| 994 case DW_EH_PE_absptr: | |
| 995 dw2_assemble_integer (size, addr); | |
| 996 break; | |
| 997 | |
| 998 case DW_EH_PE_pcrel: | |
| 999 gcc_assert (GET_CODE (addr) == SYMBOL_REF); | |
| 1000 #ifdef ASM_OUTPUT_DWARF_PCREL | |
| 1001 ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, XSTR (addr, 0)); | |
| 1002 #else | |
| 1003 dw2_assemble_integer (size, gen_rtx_MINUS (Pmode, addr, pc_rtx)); | |
| 1004 #endif | |
| 1005 break; | |
| 1006 | |
| 1007 default: | |
| 1008 /* Other encodings should have been handled by | |
| 1009 ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX. */ | |
| 1010 gcc_unreachable (); | |
| 1011 } | |
| 1012 | |
| 1013 #ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX | |
| 1014 done:; | |
| 1015 #endif | |
| 1016 } | |
| 1017 | |
| 1018 if (flag_debug_asm && comment) | |
| 1019 { | |
| 1020 fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START); | |
| 1021 vfprintf (asm_out_file, comment, ap); | |
| 1022 } | |
| 1023 fputc ('\n', asm_out_file); | |
| 1024 | |
| 1025 va_end (ap); | |
| 1026 } | |
| 1027 | |
| 1028 #include "gt-dwarf2asm.h" |