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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [dwarf2asm.c] - Blame information for rev 685

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1 684 jeremybenn 
/* Dwarf2 assembler output helper routines.
2 
   Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
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 
/* Output an unaligned integer with the given value and size.  Prefer not
39 
   to print a newline, since the caller may want to add a comment.  */
40 
 
41 
void
42 
dw2_assemble_integer (int size, rtx x)
43 
{
44 
  const char *op = integer_asm_op (size, FALSE);
45 
 
46 
  if (op)
47 
    {
48 
      fputs (op, asm_out_file);
49 
      if (CONST_INT_P (x))
50 
        fprint_whex (asm_out_file, (unsigned HOST_WIDE_INT) INTVAL (x));
51 
      else
52 
        output_addr_const (asm_out_file, x);
53 
    }
54 
  else
55 
    assemble_integer (x, size, BITS_PER_UNIT, 1);
56 
}
57 
 
58 
 
59 
/* Output a value of a given size in target byte order.  */
60 
 
61 
void
62 
dw2_asm_output_data_raw (int size, unsigned HOST_WIDE_INT value)
63 
{
64 
  unsigned char bytes[8];
65 
  int i;
66 
 
67 
  for (i = 0; i < 8; ++i)
68 
    {
69 
      bytes[i] = value & 0xff;
70 
      value >>= 8;
71 
    }
72 
 
73 
  if (BYTES_BIG_ENDIAN)
74 
    {
75 
      for (i = size - 1; i > 0; --i)
76 
        fprintf (asm_out_file, "%#x,", bytes[i]);
77 
      fprintf (asm_out_file, "%#x", bytes[0]);
78 
    }
79 
  else
80 
    {
81 
      for (i = 0; i < size - 1; ++i)
82 
        fprintf (asm_out_file, "%#x,", bytes[i]);
83 
      fprintf (asm_out_file, "%#x", bytes[i]);
84 
    }
85 
}
86 
 
87 
/* Output an immediate constant in a given SIZE in bytes.  */
88 
 
89 
void
90 
dw2_asm_output_data (int size, unsigned HOST_WIDE_INT value,
91 
                     const char *comment, ...)
92 
{
93 
  va_list ap;
94 
  const char *op = integer_asm_op (size, FALSE);
95 
 
96 
  va_start (ap, comment);
97 
 
98 
  if (size * 8 < HOST_BITS_PER_WIDE_INT)
99 
    value &= ~(~(unsigned HOST_WIDE_INT) 0 << (size * 8));
100 
 
101 
  if (op)
102 
    {
103 
      fputs (op, asm_out_file);
104 
      fprint_whex (asm_out_file, value);
105 
    }
106 
  else
107 
    assemble_integer (GEN_INT (value), size, BITS_PER_UNIT, 1);
108 
 
109 
  if (flag_debug_asm && comment)
110 
    {
111 
      fputs ("\t" ASM_COMMENT_START " ", asm_out_file);
112 
      vfprintf (asm_out_file, comment, ap);
113 
    }
114 
  putc ('\n', asm_out_file);
115 
 
116 
  va_end (ap);
117 
}
118 
 
119 
/* Output the difference between two symbols in a given size.  */
120 
/* ??? There appear to be assemblers that do not like such
121 
   subtraction, but do support ASM_SET_OP.  It's unfortunately
122 
   impossible to do here, since the ASM_SET_OP for the difference
123 
   symbol must appear after both symbols are defined.  */
124 
 
125 
void
126 
dw2_asm_output_delta (int size, const char *lab1, const char *lab2,
127 
                      const char *comment, ...)
128 
{
129 
  va_list ap;
130 
 
131 
  va_start (ap, comment);
132 
 
133 
#ifdef ASM_OUTPUT_DWARF_DELTA
134 
  ASM_OUTPUT_DWARF_DELTA (asm_out_file, size, lab1, lab2);
135 
#else
136 
  dw2_assemble_integer (size,
137 
                        gen_rtx_MINUS (Pmode,
138 
                                       gen_rtx_SYMBOL_REF (Pmode, lab1),
139 
                                       gen_rtx_SYMBOL_REF (Pmode, lab2)));
140 
#endif
141 
  if (flag_debug_asm && comment)
142 
    {
143 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
144 
      vfprintf (asm_out_file, comment, ap);
145 
    }
146 
  fputc ('\n', asm_out_file);
147 
 
148 
  va_end (ap);
149 
}
150 
 
151 
/* Output the difference between two symbols in instruction units
152 
   in a given size.  */
153 
 
154 
void
155 
dw2_asm_output_vms_delta (int size ATTRIBUTE_UNUSED,
156 
                          const char *lab1, const char *lab2,
157 
                          const char *comment, ...)
158 
{
159 
  va_list ap;
160 
 
161 
  va_start (ap, comment);
162 
 
163 
#ifndef ASM_OUTPUT_DWARF_VMS_DELTA
164 
  /* VMS Delta is only special on ia64-vms, but this funtion also gets
165 
     called on alpha-vms so it has to do something sane.  */
166 
  dw2_asm_output_delta (size, lab1, lab2, comment);
167 
#else
168 
  ASM_OUTPUT_DWARF_VMS_DELTA (asm_out_file, size, lab1, lab2);
169 
  if (flag_debug_asm && comment)
170 
    {
171 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
172 
      vfprintf (asm_out_file, comment, ap);
173 
    }
174 
  fputc ('\n', asm_out_file);
175 
#endif
176 
 
177 
  va_end (ap);
178 
}
179 
 
180 
/* Output a section-relative reference to a LABEL, which was placed in
181 
   BASE.  In general this can only be done for debugging symbols.
182 
   E.g. on most targets with the GNU linker, this is accomplished with
183 
   a direct reference and the knowledge that the debugging section
184 
   will be placed at VMA 0.  Some targets have special relocations for
185 
   this that we must use.  */
186 
 
187 
void
188 
dw2_asm_output_offset (int size, const char *label,
189 
                       section *base ATTRIBUTE_UNUSED,
190 
                       const char *comment, ...)
191 
{
192 
  va_list ap;
193 
 
194 
  va_start (ap, comment);
195 
 
196 
#ifdef ASM_OUTPUT_DWARF_OFFSET
197 
  ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label, base);
198 
#else
199 
  dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label));
200 
#endif
201 
 
202 
  if (flag_debug_asm && comment)
203 
    {
204 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
205 
      vfprintf (asm_out_file, comment, ap);
206 
    }
207 
  fputc ('\n', asm_out_file);
208 
 
209 
  va_end (ap);
210 
}
211 
 
212 
#if 0
213 
 
214 
/* Output a self-relative reference to a label, possibly in a
215 
   different section or object file.  */
216 
 
217 
void
218 
dw2_asm_output_pcrel (int size ATTRIBUTE_UNUSED,
219 
                      const char *label ATTRIBUTE_UNUSED,
220 
                      const char *comment, ...)
221 
{
222 
  va_list ap;
223 
 
224 
  va_start (ap, comment);
225 
 
226 
#ifdef ASM_OUTPUT_DWARF_PCREL
227 
  ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, label);
228 
#else
229 
  dw2_assemble_integer (size,
230 
                        gen_rtx_MINUS (Pmode,
231 
                                       gen_rtx_SYMBOL_REF (Pmode, label),
232 
                                       pc_rtx));
233 
#endif
234 
 
235 
  if (flag_debug_asm && comment)
236 
    {
237 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
238 
      vfprintf (asm_out_file, comment, ap);
239 
    }
240 
  fputc ('\n', asm_out_file);
241 
 
242 
  va_end (ap);
243 
}
244 
#endif /* 0 */
245 
 
246 
/* Output an absolute reference to a label.  */
247 
 
248 
void
249 
dw2_asm_output_addr (int size, const char *label,
250 
                     const char *comment, ...)
251 
{
252 
  va_list ap;
253 
 
254 
  va_start (ap, comment);
255 
 
256 
  dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label));
257 
 
258 
  if (flag_debug_asm && comment)
259 
    {
260 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
261 
      vfprintf (asm_out_file, comment, ap);
262 
    }
263 
  fputc ('\n', asm_out_file);
264 
 
265 
  va_end (ap);
266 
}
267 
 
268 
/* Similar, but use an RTX expression instead of a text label.  */
269 
 
270 
void
271 
dw2_asm_output_addr_rtx (int size, rtx addr,
272 
                         const char *comment, ...)
273 
{
274 
  va_list ap;
275 
 
276 
  va_start (ap, comment);
277 
 
278 
  dw2_assemble_integer (size, addr);
279 
 
280 
  if (flag_debug_asm && comment)
281 
    {
282 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
283 
      vfprintf (asm_out_file, comment, ap);
284 
    }
285 
  fputc ('\n', asm_out_file);
286 
 
287 
  va_end (ap);
288 
}
289 
 
290 
/* Output the first ORIG_LEN characters of STR as a string.
291 
   If ORIG_LEN is equal to -1, ignore this parameter and output
292 
   the entire STR instead.
293 
   If COMMENT is not NULL and comments in the debug information
294 
   have been requested by the user, append the given COMMENT
295 
   to the generated output.  */
296 
 
297 
void
298 
dw2_asm_output_nstring (const char *str, size_t orig_len,
299 
                        const char *comment, ...)
300 
{
301 
  size_t i, len;
302 
  va_list ap;
303 
 
304 
  va_start (ap, comment);
305 
 
306 
  len = orig_len;
307 
 
308 
  if (len == (size_t) -1)
309 
    len = strlen (str);
310 
 
311 
  if (flag_debug_asm && comment)
312 
    {
313 
      fputs ("\t.ascii \"", asm_out_file);
314 
      for (i = 0; i < len; i++)
315 
        {
316 
          int c = str[i];
317 
          if (c == '\"' || c == '\\')
318 
            fputc ('\\', asm_out_file);
319 
          if (ISPRINT(c))
320 
            fputc (c, asm_out_file);
321 
          else
322 
            fprintf (asm_out_file, "\\%o", c);
323 
        }
324 
      fprintf (asm_out_file, "\\0\"\t%s ", ASM_COMMENT_START);
325 
      vfprintf (asm_out_file, comment, ap);
326 
      fputc ('\n', asm_out_file);
327 
    }
328 
  else
329 
    {
330 
      /* If an explicit length was given, we can't assume there
331 
         is a null termination in the string buffer.  */
332 
      if (orig_len == (size_t) -1)
333 
        len += 1;
334 
      ASM_OUTPUT_ASCII (asm_out_file, str, len);
335 
      if (orig_len != (size_t) -1)
336 
        assemble_integer (const0_rtx, 1, BITS_PER_UNIT, 1);
337 
    }
338 
 
339 
  va_end (ap);
340 
}
341 
 
342 
 
343 
/* Return the size of an unsigned LEB128 quantity.  */
344 
 
345 
int
346 
size_of_uleb128 (unsigned HOST_WIDE_INT value)
347 
{
348 
  int size = 0;
349 
 
350 
  do
351 
    {
352 
      value >>= 7;
353 
      size += 1;
354 
    }
355 
  while (value != 0);
356 
 
357 
  return size;
358 
}
359 
 
360 
/* Return the size of a signed LEB128 quantity.  */
361 
 
362 
int
363 
size_of_sleb128 (HOST_WIDE_INT value)
364 
{
365 
  int size = 0, byte;
366 
 
367 
  do
368 
    {
369 
      byte = (value & 0x7f);
370 
      value >>= 7;
371 
      size += 1;
372 
    }
373 
  while (!((value == 0 && (byte & 0x40) == 0)
374 
           || (value == -1 && (byte & 0x40) != 0)));
375 
 
376 
  return size;
377 
}
378 
 
379 
/* Given an encoding, return the number of bytes the format occupies.
380 
   This is only defined for fixed-size encodings, and so does not
381 
   include leb128.  */
382 
 
383 
int
384 
size_of_encoded_value (int encoding)
385 
{
386 
  if (encoding == DW_EH_PE_omit)
387 
    return 0;
388 
 
389 
  switch (encoding & 0x07)
390 
    {
391 
    case DW_EH_PE_absptr:
392 
      return POINTER_SIZE / BITS_PER_UNIT;
393 
    case DW_EH_PE_udata2:
394 
      return 2;
395 
    case DW_EH_PE_udata4:
396 
      return 4;
397 
    case DW_EH_PE_udata8:
398 
      return 8;
399 
    default:
400 
      gcc_unreachable ();
401 
    }
402 
}
403 
 
404 
/* Yield a name for a given pointer encoding.  */
405 
 
406 
const char *
407 
eh_data_format_name (int format)
408 
{
409 
#if HAVE_DESIGNATED_INITIALIZERS
410 
#define S(p, v)         [p] = v,
411 
#else
412 
#define S(p, v)         case p: return v;
413 
#endif
414 
 
415 
#if HAVE_DESIGNATED_INITIALIZERS
416 
  __extension__ static const char * const format_names[256] = {
417 
#else
418 
  switch (format) {
419 
#endif
420 
 
421 
  S(DW_EH_PE_absptr, "absolute")
422 
  S(DW_EH_PE_omit, "omit")
423 
  S(DW_EH_PE_aligned, "aligned absolute")
424 
 
425 
  S(DW_EH_PE_uleb128, "uleb128")
426 
  S(DW_EH_PE_udata2, "udata2")
427 
  S(DW_EH_PE_udata4, "udata4")
428 
  S(DW_EH_PE_udata8, "udata8")
429 
  S(DW_EH_PE_sleb128, "sleb128")
430 
  S(DW_EH_PE_sdata2, "sdata2")
431 
  S(DW_EH_PE_sdata4, "sdata4")
432 
  S(DW_EH_PE_sdata8, "sdata8")
433 
 
434 
  S(DW_EH_PE_absptr | DW_EH_PE_pcrel, "pcrel")
435 
  S(DW_EH_PE_uleb128 | DW_EH_PE_pcrel, "pcrel uleb128")
436 
  S(DW_EH_PE_udata2 | DW_EH_PE_pcrel, "pcrel udata2")
437 
  S(DW_EH_PE_udata4 | DW_EH_PE_pcrel, "pcrel udata4")
438 
  S(DW_EH_PE_udata8 | DW_EH_PE_pcrel, "pcrel udata8")
439 
  S(DW_EH_PE_sleb128 | DW_EH_PE_pcrel, "pcrel sleb128")
440 
  S(DW_EH_PE_sdata2 | DW_EH_PE_pcrel, "pcrel sdata2")
441 
  S(DW_EH_PE_sdata4 | DW_EH_PE_pcrel, "pcrel sdata4")
442 
  S(DW_EH_PE_sdata8 | DW_EH_PE_pcrel, "pcrel sdata8")
443 
 
444 
  S(DW_EH_PE_absptr | DW_EH_PE_textrel, "textrel")
445 
  S(DW_EH_PE_uleb128 | DW_EH_PE_textrel, "textrel uleb128")
446 
  S(DW_EH_PE_udata2 | DW_EH_PE_textrel, "textrel udata2")
447 
  S(DW_EH_PE_udata4 | DW_EH_PE_textrel, "textrel udata4")
448 
  S(DW_EH_PE_udata8 | DW_EH_PE_textrel, "textrel udata8")
449 
  S(DW_EH_PE_sleb128 | DW_EH_PE_textrel, "textrel sleb128")
450 
  S(DW_EH_PE_sdata2 | DW_EH_PE_textrel, "textrel sdata2")
451 
  S(DW_EH_PE_sdata4 | DW_EH_PE_textrel, "textrel sdata4")
452 
  S(DW_EH_PE_sdata8 | DW_EH_PE_textrel, "textrel sdata8")
453 
 
454 
  S(DW_EH_PE_absptr | DW_EH_PE_datarel, "datarel")
455 
  S(DW_EH_PE_uleb128 | DW_EH_PE_datarel, "datarel uleb128")
456 
  S(DW_EH_PE_udata2 | DW_EH_PE_datarel, "datarel udata2")
457 
  S(DW_EH_PE_udata4 | DW_EH_PE_datarel, "datarel udata4")
458 
  S(DW_EH_PE_udata8 | DW_EH_PE_datarel, "datarel udata8")
459 
  S(DW_EH_PE_sleb128 | DW_EH_PE_datarel, "datarel sleb128")
460 
  S(DW_EH_PE_sdata2 | DW_EH_PE_datarel, "datarel sdata2")
461 
  S(DW_EH_PE_sdata4 | DW_EH_PE_datarel, "datarel sdata4")
462 
  S(DW_EH_PE_sdata8 | DW_EH_PE_datarel, "datarel sdata8")
463 
 
464 
  S(DW_EH_PE_absptr | DW_EH_PE_funcrel, "funcrel")
465 
  S(DW_EH_PE_uleb128 | DW_EH_PE_funcrel, "funcrel uleb128")
466 
  S(DW_EH_PE_udata2 | DW_EH_PE_funcrel, "funcrel udata2")
467 
  S(DW_EH_PE_udata4 | DW_EH_PE_funcrel, "funcrel udata4")
468 
  S(DW_EH_PE_udata8 | DW_EH_PE_funcrel, "funcrel udata8")
469 
  S(DW_EH_PE_sleb128 | DW_EH_PE_funcrel, "funcrel sleb128")
470 
  S(DW_EH_PE_sdata2 | DW_EH_PE_funcrel, "funcrel sdata2")
471 
  S(DW_EH_PE_sdata4 | DW_EH_PE_funcrel, "funcrel sdata4")
472 
  S(DW_EH_PE_sdata8 | DW_EH_PE_funcrel, "funcrel sdata8")
473 
 
474 
  S(DW_EH_PE_indirect | DW_EH_PE_absptr, "indirect absolute")
475 
 
476 
  S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_pcrel,
477 
    "indirect pcrel")
478 
  S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_pcrel,
479 
    "indirect pcrel uleb128")
480 
  S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_pcrel,
481 
    "indirect pcrel udata2")
482 
  S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_pcrel,
483 
    "indirect pcrel udata4")
484 
  S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_pcrel,
485 
    "indirect pcrel udata8")
486 
  S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_pcrel,
487 
    "indirect pcrel sleb128")
488 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_pcrel,
489 
    "indirect pcrel sdata2")
490 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_pcrel,
491 
    "indirect pcrel sdata4")
492 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_pcrel,
493 
    "indirect pcrel sdata8")
494 
 
495 
  S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_textrel,
496 
    "indirect textrel")
497 
  S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_textrel,
498 
    "indirect textrel uleb128")
499 
  S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_textrel,
500 
    "indirect textrel udata2")
501 
  S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_textrel,
502 
    "indirect textrel udata4")
503 
  S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_textrel,
504 
    "indirect textrel udata8")
505 
  S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_textrel,
506 
    "indirect textrel sleb128")
507 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_textrel,
508 
    "indirect textrel sdata2")
509 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_textrel,
510 
    "indirect textrel sdata4")
511 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_textrel,
512 
    "indirect textrel sdata8")
513 
 
514 
  S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_datarel,
515 
    "indirect datarel")
516 
  S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_datarel,
517 
    "indirect datarel uleb128")
518 
  S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_datarel,
519 
    "indirect datarel udata2")
520 
  S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_datarel,
521 
    "indirect datarel udata4")
522 
  S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_datarel,
523 
    "indirect datarel udata8")
524 
  S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_datarel,
525 
    "indirect datarel sleb128")
526 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_datarel,
527 
    "indirect datarel sdata2")
528 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_datarel,
529 
    "indirect datarel sdata4")
530 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_datarel,
531 
    "indirect datarel sdata8")
532 
 
533 
  S(DW_EH_PE_indirect | DW_EH_PE_absptr | DW_EH_PE_funcrel,
534 
    "indirect funcrel")
535 
  S(DW_EH_PE_indirect | DW_EH_PE_uleb128 | DW_EH_PE_funcrel,
536 
    "indirect funcrel uleb128")
537 
  S(DW_EH_PE_indirect | DW_EH_PE_udata2 | DW_EH_PE_funcrel,
538 
    "indirect funcrel udata2")
539 
  S(DW_EH_PE_indirect | DW_EH_PE_udata4 | DW_EH_PE_funcrel,
540 
    "indirect funcrel udata4")
541 
  S(DW_EH_PE_indirect | DW_EH_PE_udata8 | DW_EH_PE_funcrel,
542 
    "indirect funcrel udata8")
543 
  S(DW_EH_PE_indirect | DW_EH_PE_sleb128 | DW_EH_PE_funcrel,
544 
    "indirect funcrel sleb128")
545 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata2 | DW_EH_PE_funcrel,
546 
    "indirect funcrel sdata2")
547 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata4 | DW_EH_PE_funcrel,
548 
    "indirect funcrel sdata4")
549 
  S(DW_EH_PE_indirect | DW_EH_PE_sdata8 | DW_EH_PE_funcrel,
550 
    "indirect funcrel sdata8")
551 
 
552 
#if HAVE_DESIGNATED_INITIALIZERS
553 
  };
554 
 
555 
  gcc_assert (format >= 0 && format < 0x100 && format_names[format]);
556 
 
557 
  return format_names[format];
558 
#else
559 
  }
560 
  gcc_unreachable ();
561 
#endif
562 
}
563 
 
564 
/* Output an unsigned LEB128 quantity, but only the byte values.  */
565 
 
566 
void
567 
dw2_asm_output_data_uleb128_raw (unsigned HOST_WIDE_INT value)
568 
{
569 
  while (1)
570 
    {
571 
      int byte = (value & 0x7f);
572 
      value >>= 7;
573 
      if (value != 0)
574 
        /* More bytes to follow.  */
575 
        byte |= 0x80;
576 
 
577 
      fprintf (asm_out_file, "%#x", byte);
578 
      if (value == 0)
579 
        break;
580 
      fputc (',', asm_out_file);
581 
    }
582 
}
583 
 
584 
/* Output an unsigned LEB128 quantity.  */
585 
 
586 
void
587 
dw2_asm_output_data_uleb128 (unsigned HOST_WIDE_INT value,
588 
                             const char *comment, ...)
589 
{
590 
  va_list ap;
591 
 
592 
  va_start (ap, comment);
593 
 
594 
#ifdef HAVE_AS_LEB128
595 
  fputs ("\t.uleb128 ", asm_out_file);
596 
  fprint_whex (asm_out_file, value);
597 
 
598 
  if (flag_debug_asm && comment)
599 
    {
600 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
601 
      vfprintf (asm_out_file, comment, ap);
602 
    }
603 
#else
604 
  {
605 
    unsigned HOST_WIDE_INT work = value;
606 
    const char *byte_op = targetm.asm_out.byte_op;
607 
 
608 
    if (byte_op)
609 
      fputs (byte_op, asm_out_file);
610 
    do
611 
      {
612 
        int byte = (work & 0x7f);
613 
        work >>= 7;
614 
        if (work != 0)
615 
          /* More bytes to follow.  */
616 
          byte |= 0x80;
617 
 
618 
        if (byte_op)
619 
          {
620 
            fprintf (asm_out_file, "%#x", byte);
621 
            if (work != 0)
622 
              fputc (',', asm_out_file);
623 
          }
624 
        else
625 
          assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1);
626 
      }
627 
    while (work != 0);
628 
 
629 
  if (flag_debug_asm)
630 
    {
631 
      fprintf (asm_out_file, "\t%s uleb128 " HOST_WIDE_INT_PRINT_HEX,
632 
               ASM_COMMENT_START, value);
633 
      if (comment)
634 
        {
635 
          fputs ("; ", asm_out_file);
636 
          vfprintf (asm_out_file, comment, ap);
637 
        }
638 
    }
639 
  }
640 
#endif
641 
  putc ('\n', asm_out_file);
642 
 
643 
  va_end (ap);
644 
}
645 
 
646 
/* Output an signed LEB128 quantity, but only the byte values.  */
647 
 
648 
void
649 
dw2_asm_output_data_sleb128_raw (HOST_WIDE_INT value)
650 
{
651 
  int byte, more;
652 
 
653 
  while (1)
654 
    {
655 
      byte = (value & 0x7f);
656 
      value >>= 7;
657 
      more = !((value == 0 && (byte & 0x40) == 0)
658 
                || (value == -1 && (byte & 0x40) != 0));
659 
      if (more)
660 
        byte |= 0x80;
661 
 
662 
      fprintf (asm_out_file, "%#x", byte);
663 
      if (!more)
664 
        break;
665 
      fputc (',', asm_out_file);
666 
    }
667 
}
668 
 
669 
/* Output a signed LEB128 quantity.  */
670 
 
671 
void
672 
dw2_asm_output_data_sleb128 (HOST_WIDE_INT value,
673 
                             const char *comment, ...)
674 
{
675 
  va_list ap;
676 
 
677 
  va_start (ap, comment);
678 
 
679 
#ifdef HAVE_AS_LEB128
680 
  fprintf (asm_out_file, "\t.sleb128 " HOST_WIDE_INT_PRINT_DEC, value);
681 
 
682 
  if (flag_debug_asm && comment)
683 
    {
684 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
685 
      vfprintf (asm_out_file, comment, ap);
686 
    }
687 
#else
688 
  {
689 
    HOST_WIDE_INT work = value;
690 
    int more, byte;
691 
    const char *byte_op = targetm.asm_out.byte_op;
692 
 
693 
    if (byte_op)
694 
      fputs (byte_op, asm_out_file);
695 
    do
696 
      {
697 
        byte = (work & 0x7f);
698 
        /* arithmetic shift */
699 
        work >>= 7;
700 
        more = !((work == 0 && (byte & 0x40) == 0)
701 
                 || (work == -1 && (byte & 0x40) != 0));
702 
        if (more)
703 
          byte |= 0x80;
704 
 
705 
        if (byte_op)
706 
          {
707 
            fprintf (asm_out_file, "%#x", byte);
708 
            if (more)
709 
              fputc (',', asm_out_file);
710 
          }
711 
        else
712 
          assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1);
713 
      }
714 
    while (more);
715 
 
716 
  if (flag_debug_asm)
717 
    {
718 
      fprintf (asm_out_file, "\t%s sleb128 " HOST_WIDE_INT_PRINT_DEC,
719 
               ASM_COMMENT_START, value);
720 
      if (comment)
721 
        {
722 
          fputs ("; ", asm_out_file);
723 
          vfprintf (asm_out_file, comment, ap);
724 
        }
725 
    }
726 
  }
727 
#endif
728 
  fputc ('\n', asm_out_file);
729 
 
730 
  va_end (ap);
731 
}
732 
 
733 
void
734 
dw2_asm_output_delta_uleb128 (const char *lab1 ATTRIBUTE_UNUSED,
735 
                              const char *lab2 ATTRIBUTE_UNUSED,
736 
                              const char *comment, ...)
737 
{
738 
  va_list ap;
739 
 
740 
  va_start (ap, comment);
741 
 
742 
#ifdef HAVE_AS_LEB128
743 
  fputs ("\t.uleb128 ", asm_out_file);
744 
  assemble_name (asm_out_file, lab1);
745 
  putc ('-', asm_out_file);
746 
  assemble_name (asm_out_file, lab2);
747 
#else
748 
  gcc_unreachable ();
749 
#endif
750 
 
751 
  if (flag_debug_asm && comment)
752 
    {
753 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
754 
      vfprintf (asm_out_file, comment, ap);
755 
    }
756 
  fputc ('\n', asm_out_file);
757 
 
758 
  va_end (ap);
759 
}
760 
 
761 
#if 0
762 
 
763 
void
764 
dw2_asm_output_delta_sleb128 (const char *lab1 ATTRIBUTE_UNUSED,
765 
                              const char *lab2 ATTRIBUTE_UNUSED,
766 
                              const char *comment, ...)
767 
{
768 
  va_list ap;
769 
 
770 
  va_start (ap, comment);
771 
 
772 
#ifdef HAVE_AS_LEB128
773 
  fputs ("\t.sleb128 ", asm_out_file);
774 
  assemble_name (asm_out_file, lab1);
775 
  putc ('-', asm_out_file);
776 
  assemble_name (asm_out_file, lab2);
777 
#else
778 
  gcc_unreachable ();
779 
#endif
780 
 
781 
  if (flag_debug_asm && comment)
782 
    {
783 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
784 
      vfprintf (asm_out_file, comment, ap);
785 
    }
786 
  fputc ('\n', asm_out_file);
787 
 
788 
  va_end (ap);
789 
}
790 
#endif /* 0 */
791 
 
792 
static int dw2_output_indirect_constant_1 (splay_tree_node, void *);
793 
 
794 
static GTY((param1_is (char *), param2_is (tree))) splay_tree indirect_pool;
795 
 
796 
static GTY(()) int dw2_const_labelno;
797 
 
798 
#if defined(HAVE_GAS_HIDDEN)
799 
# define USE_LINKONCE_INDIRECT (SUPPORTS_ONE_ONLY)
800 
#else
801 
# define USE_LINKONCE_INDIRECT 0
802 
#endif
803 
 
804 
/* Comparison function for a splay tree in which the keys are strings.
805 
   K1 and K2 have the dynamic type "const char *".  Returns <0, 0, or
806 
   >0 to indicate whether K1 is less than, equal to, or greater than
807 
   K2, respectively.  */
808 
 
809 
static int
810 
splay_tree_compare_strings (splay_tree_key k1, splay_tree_key k2)
811 
{
812 
  const char *s1 = (const char *)k1;
813 
  const char *s2 = (const char *)k2;
814 
  int ret;
815 
 
816 
  if (s1 == s2)
817 
    return 0;
818 
 
819 
  ret = strcmp (s1, s2);
820 
 
821 
  /* The strings are always those from IDENTIFIER_NODEs, and,
822 
     therefore, we should never have two copies of the same
823 
     string.  */
824 
  gcc_assert (ret);
825 
 
826 
  return ret;
827 
}
828 
 
829 
/* Put X, a SYMBOL_REF, in memory.  Return a SYMBOL_REF to the allocated
830 
   memory.  Differs from force_const_mem in that a single pool is used for
831 
   the entire unit of translation, and the memory is not guaranteed to be
832 
   "near" the function in any interesting sense.  IS_PUBLIC controls whether
833 
   the symbol can be shared across the entire application (or DSO).  */
834 
 
835 
rtx
836 
dw2_force_const_mem (rtx x, bool is_public)
837 
{
838 
  splay_tree_node node;
839 
  const char *key;
840 
  tree decl_id;
841 
 
842 
  if (! indirect_pool)
843 
    /* We use strcmp, rather than just comparing pointers, so that the
844 
       sort order will not depend on the host system.  */
845 
    indirect_pool = splay_tree_new_ggc (splay_tree_compare_strings,
846 
                                        ggc_alloc_splay_tree_str_tree_node_splay_tree_s,
847 
                                        ggc_alloc_splay_tree_str_tree_node_splay_tree_node_s);
848 
 
849 
  gcc_assert (GET_CODE (x) == SYMBOL_REF);
850 
 
851 
  key = XSTR (x, 0);
852 
  node = splay_tree_lookup (indirect_pool, (splay_tree_key) key);
853 
  if (node)
854 
    decl_id = (tree) node->value;
855 
  else
856 
    {
857 
      tree id;
858 
      const char *str = targetm.strip_name_encoding (key);
859 
 
860 
      if (is_public && USE_LINKONCE_INDIRECT)
861 
        {
862 
          char *ref_name = XALLOCAVEC (char, strlen (str) + sizeof "DW.ref.");
863 
 
864 
          sprintf (ref_name, "DW.ref.%s", str);
865 
          gcc_assert (!maybe_get_identifier (ref_name));
866 
          decl_id = get_identifier (ref_name);
867 
          TREE_PUBLIC (decl_id) = 1;
868 
        }
869 
      else
870 
        {
871 
          char label[32];
872 
 
873 
          ASM_GENERATE_INTERNAL_LABEL (label, "LDFCM", dw2_const_labelno);
874 
          ++dw2_const_labelno;
875 
          gcc_assert (!maybe_get_identifier (label));
876 
          decl_id = get_identifier (label);
877 
        }
878 
 
879 
      id = maybe_get_identifier (str);
880 
      if (id)
881 
        TREE_SYMBOL_REFERENCED (id) = 1;
882 
 
883 
      splay_tree_insert (indirect_pool, (splay_tree_key) key,
884 
                         (splay_tree_value) decl_id);
885 
    }
886 
 
887 
  return gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (decl_id));
888 
}
889 
 
890 
/* A helper function for dw2_output_indirect_constants called through
891 
   splay_tree_foreach.  Emit one queued constant to memory.  */
892 
 
893 
static int
894 
dw2_output_indirect_constant_1 (splay_tree_node node,
895 
                                void *data ATTRIBUTE_UNUSED)
896 
{
897 
  const char *sym;
898 
  rtx sym_ref;
899 
  tree id, decl;
900 
 
901 
  sym = (const char *) node->key;
902 
  id = (tree) node->value;
903 
 
904 
  decl = build_decl (UNKNOWN_LOCATION, VAR_DECL, id, ptr_type_node);
905 
  SET_DECL_ASSEMBLER_NAME (decl, id);
906 
  DECL_ARTIFICIAL (decl) = 1;
907 
  DECL_IGNORED_P (decl) = 1;
908 
  DECL_INITIAL (decl) = decl;
909 
  TREE_READONLY (decl) = 1;
910 
 
911 
  if (TREE_PUBLIC (id))
912 
    {
913 
      TREE_PUBLIC (decl) = 1;
914 
      make_decl_one_only (decl, DECL_ASSEMBLER_NAME (decl));
915 
      if (USE_LINKONCE_INDIRECT)
916 
        DECL_VISIBILITY (decl) = VISIBILITY_HIDDEN;
917 
    }
918 
  else
919 
    TREE_STATIC (decl) = 1;
920 
 
921 
  sym_ref = gen_rtx_SYMBOL_REF (Pmode, sym);
922 
  assemble_variable (decl, 1, 1, 1);
923 
  assemble_integer (sym_ref, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
924 
 
925 
  return 0;
926 
}
927 
 
928 
/* Emit the constants queued through dw2_force_const_mem.  */
929 
 
930 
void
931 
dw2_output_indirect_constants (void)
932 
{
933 
  if (indirect_pool)
934 
    splay_tree_foreach (indirect_pool, dw2_output_indirect_constant_1, NULL);
935 
}
936 
 
937 
/* Like dw2_asm_output_addr_rtx, but encode the pointer as directed.
938 
   If PUBLIC is set and the encoding is DW_EH_PE_indirect, the indirect
939 
   reference is shared across the entire application (or DSO).  */
940 
 
941 
void
942 
dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr, bool is_public,
943 
                                 const char *comment, ...)
944 
{
945 
  int size;
946 
  va_list ap;
947 
 
948 
  va_start (ap, comment);
949 
 
950 
  size = size_of_encoded_value (encoding);
951 
 
952 
  if (encoding == DW_EH_PE_aligned)
953 
    {
954 
      assemble_align (POINTER_SIZE);
955 
      assemble_integer (addr, size, POINTER_SIZE, 1);
956 
      va_end (ap);
957 
      return;
958 
    }
959 
 
960 
  /* NULL is _always_ represented as a plain zero, as is 1 for Ada's
961 
     "all others".  */
962 
  if (addr == const0_rtx || addr == const1_rtx)
963 
    assemble_integer (addr, size, BITS_PER_UNIT, 1);
964 
  else
965 
    {
966 
    restart:
967 
      /* Allow the target first crack at emitting this.  Some of the
968 
         special relocations require special directives instead of
969 
         just ".4byte" or whatever.  */
970 
#ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
971 
      ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX (asm_out_file, encoding, size,
972 
                                         addr, done);
973 
#endif
974 
 
975 
      /* Indirection is used to get dynamic relocations out of a
976 
         read-only section.  */
977 
      if (encoding & DW_EH_PE_indirect)
978 
        {
979 
          /* It is very tempting to use force_const_mem so that we share data
980 
             with the normal constant pool.  However, we've already emitted
981 
             the constant pool for this function.  Moreover, we'd like to
982 
             share these constants across the entire unit of translation and
983 
             even, if possible, across the entire application (or DSO).  */
984 
          addr = dw2_force_const_mem (addr, is_public);
985 
          encoding &= ~DW_EH_PE_indirect;
986 
          goto restart;
987 
        }
988 
 
989 
      switch (encoding & 0xF0)
990 
        {
991 
        case DW_EH_PE_absptr:
992 
          dw2_assemble_integer (size, addr);
993 
          break;
994 
 
995 
        case DW_EH_PE_pcrel:
996 
          gcc_assert (GET_CODE (addr) == SYMBOL_REF);
997 
#ifdef ASM_OUTPUT_DWARF_PCREL
998 
          ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, XSTR (addr, 0));
999 
#else
1000 
          dw2_assemble_integer (size, gen_rtx_MINUS (Pmode, addr, pc_rtx));
1001 
#endif
1002 
          break;
1003 
 
1004 
        default:
1005 
          /* Other encodings should have been handled by
1006 
             ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX.  */
1007 
          gcc_unreachable ();
1008 
        }
1009 
 
1010 
#ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
1011 
    done:;
1012 
#endif
1013 
    }
1014 
 
1015 
  if (flag_debug_asm && comment)
1016 
    {
1017 
      fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
1018 
      vfprintf (asm_out_file, comment, ap);
1019 
    }
1020 
  fputc ('\n', asm_out_file);
1021 
 
1022 
  va_end (ap);
1023 
}
1024 
 
1025 
#include "gt-dwarf2asm.h"

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