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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [bfd/] [elf32-rl78.c] - Blame information for rev 279

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1 163 khays 
/* Renesas RL78 specific support for 32-bit ELF.
2 
   Copyright (C) 2011
3 
   Free Software Foundation, Inc.
4 
 
5 
   This file is part of BFD, the Binary File Descriptor library.
6 
 
7 
   This program is free software; you can redistribute it and/or modify
8 
   it under the terms of the GNU General Public License as published by
9 
   the Free Software Foundation; either version 3 of the License, or
10 
   (at your option) any later version.
11 
 
12 
   This program is distributed in the hope that it will be useful,
13 
   but WITHOUT ANY WARRANTY; without even the implied warranty of
14 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 
   GNU General Public License for more details.
16 
 
17 
   You should have received a copy of the GNU General Public License
18 
   along with this program; if not, write to the Free Software
19 
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
20 
 
21 
#include "sysdep.h"
22 
#include "bfd.h"
23 
#include "bfd_stdint.h"
24 
#include "libbfd.h"
25 
#include "elf-bfd.h"
26 
#include "elf/rl78.h"
27 
#include "libiberty.h"
28 
 
29 
#define valid_16bit_address(v) ((v) <= 0x0ffff || (v) >= 0xf0000)
30 
 
31 
#define RL78REL(n,sz,bit,shift,complain,pcrel)                               \
32 
  HOWTO (R_RL78_##n, shift, sz, bit, pcrel, 0, complain_overflow_ ## complain, \
33 
         bfd_elf_generic_reloc, "R_RL78_" #n, FALSE, 0, ~0, FALSE)
34 
 
35 
/* Note that the relocations around 0x7f are internal to this file;
36 
   feel free to move them as needed to avoid conflicts with published
37 
   relocation numbers.  */
38 
 
39 
static reloc_howto_type rl78_elf_howto_table [] =
40 
{
41 
  RL78REL (NONE,         0,  0, 0, dont,     FALSE),
42 
  RL78REL (DIR32,        2, 32, 0, signed,   FALSE),
43 
  RL78REL (DIR24S,       2, 24, 0, signed,   FALSE),
44 
  RL78REL (DIR16,        1, 16, 0, dont,     FALSE),
45 
  RL78REL (DIR16U,       1, 16, 0, unsigned, FALSE),
46 
  RL78REL (DIR16S,       1, 16, 0, signed,   FALSE),
47 
  RL78REL (DIR8,         0,  8, 0, dont,     FALSE),
48 
  RL78REL (DIR8U,        0,  8, 0, unsigned, FALSE),
49 
  RL78REL (DIR8S,        0,  8, 0, signed,   FALSE),
50 
  RL78REL (DIR24S_PCREL, 2, 24, 0, signed,   TRUE),
51 
  RL78REL (DIR16S_PCREL, 1, 16, 0, signed,   TRUE),
52 
  RL78REL (DIR8S_PCREL,  0,  8, 0, signed,   TRUE),
53 
  RL78REL (DIR16UL,      1, 16, 2, unsigned, FALSE),
54 
  RL78REL (DIR16UW,      1, 16, 1, unsigned, FALSE),
55 
  RL78REL (DIR8UL,       0,  8, 2, unsigned, FALSE),
56 
  RL78REL (DIR8UW,       0,  8, 1, unsigned, FALSE),
57 
  RL78REL (DIR32_REV,    1, 16, 0, dont,     FALSE),
58 
  RL78REL (DIR16_REV,    1, 16, 0, dont,     FALSE),
59 
  RL78REL (DIR3U_PCREL,  0,  3, 0, dont,     TRUE),
60 
 
61 
  EMPTY_HOWTO (0x13),
62 
  EMPTY_HOWTO (0x14),
63 
  EMPTY_HOWTO (0x15),
64 
  EMPTY_HOWTO (0x16),
65 
  EMPTY_HOWTO (0x17),
66 
  EMPTY_HOWTO (0x18),
67 
  EMPTY_HOWTO (0x19),
68 
  EMPTY_HOWTO (0x1a),
69 
  EMPTY_HOWTO (0x1b),
70 
  EMPTY_HOWTO (0x1c),
71 
  EMPTY_HOWTO (0x1d),
72 
  EMPTY_HOWTO (0x1e),
73 
  EMPTY_HOWTO (0x1f),
74 
 
75 
  EMPTY_HOWTO (0x20),
76 
  EMPTY_HOWTO (0x21),
77 
  EMPTY_HOWTO (0x22),
78 
  EMPTY_HOWTO (0x23),
79 
  EMPTY_HOWTO (0x24),
80 
  EMPTY_HOWTO (0x25),
81 
  EMPTY_HOWTO (0x26),
82 
  EMPTY_HOWTO (0x27),
83 
  EMPTY_HOWTO (0x28),
84 
  EMPTY_HOWTO (0x29),
85 
  EMPTY_HOWTO (0x2a),
86 
  EMPTY_HOWTO (0x2b),
87 
  EMPTY_HOWTO (0x2c),
88 166 khays 
  RL78REL (RH_RELAX, 0,  0, 0, dont,     FALSE),
89 163 khays 
 
90 
  EMPTY_HOWTO (0x2e),
91 
  EMPTY_HOWTO (0x2f),
92 
  EMPTY_HOWTO (0x30),
93 
  EMPTY_HOWTO (0x31),
94 
  EMPTY_HOWTO (0x32),
95 
  EMPTY_HOWTO (0x33),
96 
  EMPTY_HOWTO (0x34),
97 
  EMPTY_HOWTO (0x35),
98 
  EMPTY_HOWTO (0x36),
99 
  EMPTY_HOWTO (0x37),
100 
  EMPTY_HOWTO (0x38),
101 
  EMPTY_HOWTO (0x39),
102 
  EMPTY_HOWTO (0x3a),
103 
  EMPTY_HOWTO (0x3b),
104 
  EMPTY_HOWTO (0x3c),
105 
  EMPTY_HOWTO (0x3d),
106 
  EMPTY_HOWTO (0x3e),
107 
  EMPTY_HOWTO (0x3f),
108 
  EMPTY_HOWTO (0x40),
109 
 
110 
  RL78REL (ABS32,        2, 32, 0, dont,     FALSE),
111 
  RL78REL (ABS24S,       2, 24, 0, signed,   FALSE),
112 
  RL78REL (ABS16,        1, 16, 0, dont,     FALSE),
113 
  RL78REL (ABS16U,       1, 16, 0, unsigned, FALSE),
114 
  RL78REL (ABS16S,       1, 16, 0, signed,   FALSE),
115 
  RL78REL (ABS8,         0,  8, 0, dont,     FALSE),
116 
  RL78REL (ABS8U,        0,  8, 0, unsigned, FALSE),
117 
  RL78REL (ABS8S,        0,  8, 0, signed,   FALSE),
118 
  RL78REL (ABS24S_PCREL, 2, 24, 0, signed,   TRUE),
119 
  RL78REL (ABS16S_PCREL, 1, 16, 0, signed,   TRUE),
120 
  RL78REL (ABS8S_PCREL,  0,  8, 0, signed,   TRUE),
121 
  RL78REL (ABS16UL,      1, 16, 0, unsigned, FALSE),
122 
  RL78REL (ABS16UW,      1, 16, 0, unsigned, FALSE),
123 
  RL78REL (ABS8UL,       0,  8, 0, unsigned, FALSE),
124 
  RL78REL (ABS8UW,       0,  8, 0, unsigned, FALSE),
125 
  RL78REL (ABS32_REV,    2, 32, 0, dont,     FALSE),
126 
  RL78REL (ABS16_REV,    1, 16, 0, dont,     FALSE),
127 
 
128 
#define STACK_REL_P(x) ((x) <= R_RL78_ABS16_REV && (x) >= R_RL78_ABS32)
129 
 
130 
  EMPTY_HOWTO (0x52),
131 
  EMPTY_HOWTO (0x53),
132 
  EMPTY_HOWTO (0x54),
133 
  EMPTY_HOWTO (0x55),
134 
  EMPTY_HOWTO (0x56),
135 
  EMPTY_HOWTO (0x57),
136 
  EMPTY_HOWTO (0x58),
137 
  EMPTY_HOWTO (0x59),
138 
  EMPTY_HOWTO (0x5a),
139 
  EMPTY_HOWTO (0x5b),
140 
  EMPTY_HOWTO (0x5c),
141 
  EMPTY_HOWTO (0x5d),
142 
  EMPTY_HOWTO (0x5e),
143 
  EMPTY_HOWTO (0x5f),
144 
  EMPTY_HOWTO (0x60),
145 
  EMPTY_HOWTO (0x61),
146 
  EMPTY_HOWTO (0x62),
147 
  EMPTY_HOWTO (0x63),
148 
  EMPTY_HOWTO (0x64),
149 
  EMPTY_HOWTO (0x65),
150 
  EMPTY_HOWTO (0x66),
151 
  EMPTY_HOWTO (0x67),
152 
  EMPTY_HOWTO (0x68),
153 
  EMPTY_HOWTO (0x69),
154 
  EMPTY_HOWTO (0x6a),
155 
  EMPTY_HOWTO (0x6b),
156 
  EMPTY_HOWTO (0x6c),
157 
  EMPTY_HOWTO (0x6d),
158 
  EMPTY_HOWTO (0x6e),
159 
  EMPTY_HOWTO (0x6f),
160 
  EMPTY_HOWTO (0x70),
161 
  EMPTY_HOWTO (0x71),
162 
  EMPTY_HOWTO (0x72),
163 
  EMPTY_HOWTO (0x73),
164 
  EMPTY_HOWTO (0x74),
165 
  EMPTY_HOWTO (0x75),
166 
  EMPTY_HOWTO (0x76),
167 
  EMPTY_HOWTO (0x77),
168 
 
169 
  EMPTY_HOWTO (0x78),
170 
  EMPTY_HOWTO (0x79),
171 
  EMPTY_HOWTO (0x7a),
172 
  EMPTY_HOWTO (0x7b),
173 
  EMPTY_HOWTO (0x7c),
174 
  EMPTY_HOWTO (0x7d),
175 
  EMPTY_HOWTO (0x7e),
176 
  EMPTY_HOWTO (0x7f),
177 
 
178 
  RL78REL (SYM,       2, 32, 0, dont, FALSE),
179 
  RL78REL (OPneg,     2, 32, 0, dont, FALSE),
180 
  RL78REL (OPadd,     2, 32, 0, dont, FALSE),
181 
  RL78REL (OPsub,     2, 32, 0, dont, FALSE),
182 
  RL78REL (OPmul,     2, 32, 0, dont, FALSE),
183 
  RL78REL (OPdiv,     2, 32, 0, dont, FALSE),
184 
  RL78REL (OPshla,    2, 32, 0, dont, FALSE),
185 
  RL78REL (OPshra,    2, 32, 0, dont, FALSE),
186 
  RL78REL (OPsctsize, 2, 32, 0, dont, FALSE),
187 
  EMPTY_HOWTO (0x89),
188 
  EMPTY_HOWTO (0x8a),
189 
  EMPTY_HOWTO (0x8b),
190 
  EMPTY_HOWTO (0x8c),
191 
  RL78REL (OPscttop,  2, 32, 0, dont, FALSE),
192 
  EMPTY_HOWTO (0x8e),
193 
  EMPTY_HOWTO (0x8f),
194 
  RL78REL (OPand,     2, 32, 0, dont, FALSE),
195 
  RL78REL (OPor,      2, 32, 0, dont, FALSE),
196 
  RL78REL (OPxor,     2, 32, 0, dont, FALSE),
197 
  RL78REL (OPnot,     2, 32, 0, dont, FALSE),
198 
  RL78REL (OPmod,     2, 32, 0, dont, FALSE),
199 
  RL78REL (OPromtop,  2, 32, 0, dont, FALSE),
200 
  RL78REL (OPramtop,  2, 32, 0, dont, FALSE)
201 
};
202 
 
203 
/* Map BFD reloc types to RL78 ELF reloc types.  */
204 
 
205 
struct rl78_reloc_map
206 
{
207 
  bfd_reloc_code_real_type  bfd_reloc_val;
208 
  unsigned int              rl78_reloc_val;
209 
};
210 
 
211 
static const struct rl78_reloc_map rl78_reloc_map [] =
212 
{
213 
  { BFD_RELOC_NONE,             R_RL78_NONE },
214 
  { BFD_RELOC_8,                R_RL78_DIR8S },
215 
  { BFD_RELOC_16,               R_RL78_DIR16S },
216 
  { BFD_RELOC_24,               R_RL78_DIR24S },
217 
  { BFD_RELOC_32,               R_RL78_DIR32 },
218 
  { BFD_RELOC_RL78_16_OP,       R_RL78_DIR16 },
219 
  { BFD_RELOC_RL78_DIR3U_PCREL, R_RL78_DIR3U_PCREL },
220 
  { BFD_RELOC_8_PCREL,          R_RL78_DIR8S_PCREL },
221 
  { BFD_RELOC_16_PCREL,         R_RL78_DIR16S_PCREL },
222 
  { BFD_RELOC_24_PCREL,         R_RL78_DIR24S_PCREL },
223 
  { BFD_RELOC_RL78_8U,          R_RL78_DIR8U },
224 
  { BFD_RELOC_RL78_16U,         R_RL78_DIR16U },
225 
  { BFD_RELOC_RL78_SYM,         R_RL78_SYM },
226 
  { BFD_RELOC_RL78_OP_SUBTRACT, R_RL78_OPsub },
227 
  { BFD_RELOC_RL78_OP_NEG,      R_RL78_OPneg },
228 
  { BFD_RELOC_RL78_OP_AND,      R_RL78_OPand },
229 
  { BFD_RELOC_RL78_OP_SHRA,     R_RL78_OPshra },
230 
  { BFD_RELOC_RL78_ABS8,        R_RL78_ABS8 },
231 
  { BFD_RELOC_RL78_ABS16,       R_RL78_ABS16 },
232 
  { BFD_RELOC_RL78_ABS16_REV,   R_RL78_ABS16_REV },
233 
  { BFD_RELOC_RL78_ABS32,       R_RL78_ABS32 },
234 
  { BFD_RELOC_RL78_ABS32_REV,   R_RL78_ABS32_REV },
235 
  { BFD_RELOC_RL78_ABS16UL,     R_RL78_ABS16UL },
236 
  { BFD_RELOC_RL78_ABS16UW,     R_RL78_ABS16UW },
237 166 khays 
  { BFD_RELOC_RL78_ABS16U,      R_RL78_ABS16U },
238 
  { BFD_RELOC_RL78_RELAX,       R_RL78_RH_RELAX }
239 163 khays 
};
240 
 
241 
static reloc_howto_type *
242 
rl78_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
243 
                        bfd_reloc_code_real_type code)
244 
{
245 
  unsigned int i;
246 
 
247 
  if (code == BFD_RELOC_RL78_32_OP)
248 
    return rl78_elf_howto_table + R_RL78_DIR32;
249 
 
250 
  for (i = ARRAY_SIZE (rl78_reloc_map); --i;)
251 
    if (rl78_reloc_map [i].bfd_reloc_val == code)
252 
      return rl78_elf_howto_table + rl78_reloc_map[i].rl78_reloc_val;
253 
 
254 
  return NULL;
255 
}
256 
 
257 
static reloc_howto_type *
258 
rl78_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED, const char * r_name)
259 
{
260 
  unsigned int i;
261 
 
262 
  for (i = 0; i < ARRAY_SIZE (rl78_elf_howto_table); i++)
263 
    if (rl78_elf_howto_table[i].name != NULL
264 
        && strcasecmp (rl78_elf_howto_table[i].name, r_name) == 0)
265 
      return rl78_elf_howto_table + i;
266 
 
267 
  return NULL;
268 
}
269 
 
270 
/* Set the howto pointer for an RL78 ELF reloc.  */
271 
 
272 
static void
273 
rl78_info_to_howto_rela (bfd *               abfd ATTRIBUTE_UNUSED,
274 
                         arelent *           cache_ptr,
275 
                         Elf_Internal_Rela * dst)
276 
{
277 
  unsigned int r_type;
278 
 
279 
  r_type = ELF32_R_TYPE (dst->r_info);
280 
  BFD_ASSERT (r_type < (unsigned int) R_RL78_max);
281 
  cache_ptr->howto = rl78_elf_howto_table + r_type;
282 
}
283 
 
284 
static bfd_vma
285 
get_symbol_value (const char *            name,
286 
                  bfd_reloc_status_type * status,
287 
                  struct bfd_link_info *  info,
288 
                  bfd *                   input_bfd,
289 
                  asection *              input_section,
290 
                  int                     offset)
291 
{
292 
  bfd_vma value = 0;
293 
  struct bfd_link_hash_entry * h;
294 
 
295 
  h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
296 
 
297 
  if (h == NULL
298 
      || (h->type != bfd_link_hash_defined
299 
          && h->type != bfd_link_hash_defweak))
300 
    * status = info->callbacks->undefined_symbol
301 
      (info, name, input_bfd, input_section, offset, TRUE);
302 
  else
303 
    value = (h->u.def.value
304 
             + h->u.def.section->output_section->vma
305 
             + h->u.def.section->output_offset);
306 
 
307 
  return value;
308 
}
309 
 
310 
static bfd_vma
311 
get_romstart (bfd_reloc_status_type * status,
312 
              struct bfd_link_info *  info,
313 
              bfd *                   abfd,
314 
              asection *              sec,
315 
              int                     offset)
316 
{
317 
  static bfd_boolean cached = FALSE;
318 
  static bfd_vma     cached_value = 0;
319 
 
320 
  if (!cached)
321 
    {
322 
      cached_value = get_symbol_value ("_start", status, info, abfd, sec, offset);
323 
      cached = TRUE;
324 
    }
325 
  return cached_value;
326 
}
327 
 
328 
static bfd_vma
329 
get_ramstart (bfd_reloc_status_type * status,
330 
              struct bfd_link_info *  info,
331 
              bfd *                   abfd,
332 
              asection *              sec,
333 
              int                     offset)
334 
{
335 
  static bfd_boolean cached = FALSE;
336 
  static bfd_vma     cached_value = 0;
337 
 
338 
  if (!cached)
339 
    {
340 
      cached_value = get_symbol_value ("__datastart", status, info, abfd, sec, offset);
341 
      cached = TRUE;
342 
    }
343 
  return cached_value;
344 
}
345 
 
346 
#define NUM_STACK_ENTRIES 16
347 
static int32_t rl78_stack [ NUM_STACK_ENTRIES ];
348 
static unsigned int rl78_stack_top;
349 
 
350 
#define RL78_STACK_PUSH(val)                    \
351 
  do                                            \
352 
    {                                           \
353 
      if (rl78_stack_top < NUM_STACK_ENTRIES)   \
354 
        rl78_stack [rl78_stack_top ++] = (val); \
355 
      else                                      \
356 
        r = bfd_reloc_dangerous;                \
357 
    }                                           \
358 
  while (0)
359 
 
360 
#define RL78_STACK_POP(dest)                    \
361 
  do                                            \
362 
    {                                           \
363 
      if (rl78_stack_top > 0)                    \
364 
        (dest) = rl78_stack [-- rl78_stack_top];        \
365 
      else                                      \
366 
        (dest) = 0, r = bfd_reloc_dangerous;     \
367 
    }                                           \
368 
  while (0)
369 
 
370 
/* Relocate an RL78 ELF section.
371 
   There is some attempt to make this function usable for many architectures,
372 
   both USE_REL and USE_RELA ['twould be nice if such a critter existed],
373 
   if only to serve as a learning tool.
374 
 
375 
   The RELOCATE_SECTION function is called by the new ELF backend linker
376 
   to handle the relocations for a section.
377 
 
378 
   The relocs are always passed as Rela structures; if the section
379 
   actually uses Rel structures, the r_addend field will always be
380 
   zero.
381 
 
382 
   This function is responsible for adjusting the section contents as
383 
   necessary, and (if using Rela relocs and generating a relocatable
384 
   output file) adjusting the reloc addend as necessary.
385 
 
386 
   This function does not have to worry about setting the reloc
387 
   address or the reloc symbol index.
388 
 
389 
   LOCAL_SYMS is a pointer to the swapped in local symbols.
390 
 
391 
   LOCAL_SECTIONS is an array giving the section in the input file
392 
   corresponding to the st_shndx field of each local symbol.
393 
 
394 
   The global hash table entry for the global symbols can be found
395 
   via elf_sym_hashes (input_bfd).
396 
 
397 
   When generating relocatable output, this function must handle
398 
   STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
399 
   going to be the section symbol corresponding to the output
400 
   section, which means that the addend must be adjusted
401 
   accordingly.  */
402 
 
403 
static bfd_boolean
404 
rl78_elf_relocate_section
405 
    (bfd *                   output_bfd,
406 
     struct bfd_link_info *  info,
407 
     bfd *                   input_bfd,
408 
     asection *              input_section,
409 
     bfd_byte *              contents,
410 
     Elf_Internal_Rela *     relocs,
411 
     Elf_Internal_Sym *      local_syms,
412 
     asection **             local_sections)
413 
{
414 
  Elf_Internal_Shdr *           symtab_hdr;
415 
  struct elf_link_hash_entry ** sym_hashes;
416 
  Elf_Internal_Rela *           rel;
417 
  Elf_Internal_Rela *           relend;
418 
  bfd *dynobj;
419 
  asection *splt;
420 
 
421 
  symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
422 
  sym_hashes = elf_sym_hashes (input_bfd);
423 
  relend     = relocs + input_section->reloc_count;
424 
 
425 
  dynobj = elf_hash_table (info)->dynobj;
426 
  splt = NULL;
427 
  if (dynobj != NULL)
428 
    splt = bfd_get_section_by_name (dynobj, ".plt");
429 
 
430 
  for (rel = relocs; rel < relend; rel ++)
431 
    {
432 
      reloc_howto_type *           howto;
433 
      unsigned long                r_symndx;
434 
      Elf_Internal_Sym *           sym;
435 
      asection *                   sec;
436 
      struct elf_link_hash_entry * h;
437 
      bfd_vma                      relocation;
438 
      bfd_reloc_status_type        r;
439 
      const char *                 name = NULL;
440 
      bfd_boolean                  unresolved_reloc = TRUE;
441 
      int                          r_type;
442 
 
443 
      r_type = ELF32_R_TYPE (rel->r_info);
444 
      r_symndx = ELF32_R_SYM (rel->r_info);
445 
 
446 
      howto  = rl78_elf_howto_table + ELF32_R_TYPE (rel->r_info);
447 
      h      = NULL;
448 
      sym    = NULL;
449 
      sec    = NULL;
450 
      relocation = 0;
451 
 
452 
      if (r_symndx < symtab_hdr->sh_info)
453 
        {
454 
          sym = local_syms + r_symndx;
455 
          sec = local_sections [r_symndx];
456 
          relocation = _bfd_elf_rela_local_sym (output_bfd, sym, & sec, rel);
457 
 
458 
          name = bfd_elf_string_from_elf_section
459 
            (input_bfd, symtab_hdr->sh_link, sym->st_name);
460 
          name = (sym->st_name == 0) ? bfd_section_name (input_bfd, sec) : name;
461 
        }
462 
      else
463 
        {
464 
          bfd_boolean warned;
465 
 
466 
          RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
467 
                                   r_symndx, symtab_hdr, sym_hashes, h,
468 
                                   sec, relocation, unresolved_reloc,
469 
                                   warned);
470 
 
471 
          name = h->root.root.string;
472 
        }
473 
 
474 
      if (sec != NULL && elf_discarded_section (sec))
475 
        RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
476 
                                         rel, relend, howto, contents);
477 
 
478 
      if (info->relocatable)
479 
        {
480 
          /* This is a relocatable link.  We don't have to change
481 
             anything, unless the reloc is against a section symbol,
482 
             in which case we have to adjust according to where the
483 
             section symbol winds up in the output section.  */
484 
          if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
485 
            rel->r_addend += sec->output_offset;
486 
          continue;
487 
        }
488 
 
489 
      switch (ELF32_R_TYPE (rel->r_info))
490 
        {
491 
        case R_RL78_DIR16S:
492 
          {
493 
            bfd_vma *plt_offset;
494 
 
495 
            if (h != NULL)
496 
              plt_offset = &h->plt.offset;
497 
            else
498 
              plt_offset = elf_local_got_offsets (input_bfd) + r_symndx;
499 
 
500 166 khays 
            if (! valid_16bit_address (relocation))
501 163 khays 
              {
502 
                /* If this is the first time we've processed this symbol,
503 
                   fill in the plt entry with the correct symbol address.  */
504 
                if ((*plt_offset & 1) == 0)
505 
                  {
506 
                    unsigned int x;
507 
 
508 
                    x = 0x000000ec;  /* br !!abs24 */
509 
                    x |= (relocation << 8) & 0xffffff00;
510 
                    bfd_put_32 (input_bfd, x, splt->contents + *plt_offset);
511 
                    *plt_offset |= 1;
512 
                  }
513 
 
514 
                relocation = (splt->output_section->vma
515 
                              + splt->output_offset
516 
                              + (*plt_offset & -2));
517 
                if (name)
518 
                {
519 
                  char *newname = bfd_malloc (strlen(name)+5);
520 
                  strcpy (newname, name);
521 
                  strcat(newname, ".plt");
522 
                  _bfd_generic_link_add_one_symbol (info,
523 
                                                    input_bfd,
524 
                                                    newname,
525 
                                                    BSF_FUNCTION | BSF_WEAK,
526 
                                                    splt,
527 
                                                    (*plt_offset & -2),
528 
                                                    0,
529 
                                                    1,
530 
                                                    0,
531 
                                                    0);
532 
                }
533 
              }
534 
          }
535 
          break;
536 
        }
537 
 
538 
      if (h != NULL && h->root.type == bfd_link_hash_undefweak)
539 
        /* If the symbol is undefined and weak
540 
           then the relocation resolves to zero.  */
541 
        relocation = 0;
542 
      else
543 
        {
544 
          if (howto->pc_relative)
545 
            {
546 
              relocation -= (input_section->output_section->vma
547 
                             + input_section->output_offset
548 
                             + rel->r_offset);
549 
              relocation -= bfd_get_reloc_size (howto);
550 
            }
551 
 
552 
          relocation += rel->r_addend;
553 
        }
554 
 
555 
      r = bfd_reloc_ok;
556 
 
557 
#define RANGE(a,b) if (a > (long) relocation || (long) relocation > b) r = bfd_reloc_overflow
558 
#define ALIGN(m)   if (relocation & m) r = bfd_reloc_other;
559 
#define OP(i)      (contents[rel->r_offset + (i)])
560 
 
561 
      /* Opcode relocs are always big endian.  Data relocs are bi-endian.  */
562 
      switch (r_type)
563 
        {
564 
        case R_RL78_NONE:
565 
          break;
566 
 
567 166 khays 
        case R_RL78_RH_RELAX:
568 
          break;
569 
 
570 163 khays 
        case R_RL78_DIR8S_PCREL:
571 
          RANGE (-128, 127);
572 
          OP (0) = relocation;
573 
          break;
574 
 
575 
        case R_RL78_DIR8S:
576 
          RANGE (-128, 255);
577 
          OP (0) = relocation;
578 
          break;
579 
 
580 
        case R_RL78_DIR8U:
581 
          RANGE (0, 255);
582 
          OP (0) = relocation;
583 
          break;
584 
 
585 
        case R_RL78_DIR16S_PCREL:
586 
          RANGE (-32768, 32767);
587 
          OP (0) = relocation;
588 
          OP (1) = relocation >> 8;
589 
          break;
590 
 
591 
        case R_RL78_DIR16S:
592 
          if ((relocation & 0xf0000) == 0xf0000)
593 
            relocation &= 0xffff;
594 
          RANGE (-32768, 65535);
595 
          OP (0) = relocation;
596 
          OP (1) = relocation >> 8;
597 
          break;
598 
 
599 
        case R_RL78_DIR16U:
600 
          RANGE (0, 65536);
601 
          OP (0) = relocation;
602 
          OP (1) = relocation >> 8;
603 
          break;
604 
 
605 
        case R_RL78_DIR16:
606 
          RANGE (-32768, 65536);
607 
          OP (0) = relocation;
608 
          OP (1) = relocation >> 8;
609 
          break;
610 
 
611 
        case R_RL78_DIR16_REV:
612 
          RANGE (-32768, 65536);
613 
          OP (1) = relocation;
614 
          OP (0) = relocation >> 8;
615 
          break;
616 
 
617 
        case R_RL78_DIR3U_PCREL:
618 
          RANGE (3, 10);
619 
          OP (0) &= 0xf8;
620 
          OP (0) |= relocation & 0x07;
621 
          break;
622 
 
623 
        case R_RL78_DIR24S_PCREL:
624 
          RANGE (-0x800000, 0x7fffff);
625 
          OP (0) = relocation;
626 
          OP (1) = relocation >> 8;
627 
          OP (2) = relocation >> 16;
628 
          break;
629 
 
630 
        case R_RL78_DIR24S:
631 
          RANGE (-0x800000, 0x7fffff);
632 
          OP (0) = relocation;
633 
          OP (1) = relocation >> 8;
634 
          OP (2) = relocation >> 16;
635 
          break;
636 
 
637 
        case R_RL78_DIR32:
638 
          OP (0) = relocation;
639 
          OP (1) = relocation >> 8;
640 
          OP (2) = relocation >> 16;
641 
          OP (3) = relocation >> 24;
642 
          break;
643 
 
644 
        case R_RL78_DIR32_REV:
645 
          OP (3) = relocation;
646 
          OP (2) = relocation >> 8;
647 
          OP (1) = relocation >> 16;
648 
          OP (0) = relocation >> 24;
649 
          break;
650 
 
651 166 khays 
        case R_RL78_RH_SFR:
652 
          RANGE (0xfff00, 0xfffff);
653 
          OP (0) = relocation & 0xff;
654 
          break;
655 
 
656 
        case R_RL78_RH_SADDR:
657 
          RANGE (0xffe20, 0xfff1f);
658 
          OP (0) = relocation & 0xff;
659 
          break;
660 
 
661 163 khays 
          /* Complex reloc handling:  */
662 
 
663 
        case R_RL78_ABS32:
664 
          RL78_STACK_POP (relocation);
665 
          OP (0) = relocation;
666 
          OP (1) = relocation >> 8;
667 
          OP (2) = relocation >> 16;
668 
          OP (3) = relocation >> 24;
669 
          break;
670 
 
671 
        case R_RL78_ABS32_REV:
672 
          RL78_STACK_POP (relocation);
673 
          OP (3) = relocation;
674 
          OP (2) = relocation >> 8;
675 
          OP (1) = relocation >> 16;
676 
          OP (0) = relocation >> 24;
677 
          break;
678 
 
679 
        case R_RL78_ABS24S_PCREL:
680 
        case R_RL78_ABS24S:
681 
          RL78_STACK_POP (relocation);
682 
          RANGE (-0x800000, 0x7fffff);
683 
          OP (0) = relocation;
684 
          OP (1) = relocation >> 8;
685 
          OP (2) = relocation >> 16;
686 
          break;
687 
 
688 
        case R_RL78_ABS16:
689 
          RL78_STACK_POP (relocation);
690 
          RANGE (-32768, 65535);
691 
          OP (0) = relocation;
692 
          OP (1) = relocation >> 8;
693 
          break;
694 
 
695 
        case R_RL78_ABS16_REV:
696 
          RL78_STACK_POP (relocation);
697 
          RANGE (-32768, 65535);
698 
          OP (1) = relocation;
699 
          OP (0) = relocation >> 8;
700 
          break;
701 
 
702 
        case R_RL78_ABS16S_PCREL:
703 
        case R_RL78_ABS16S:
704 
          RL78_STACK_POP (relocation);
705 
          RANGE (-32768, 32767);
706 
          OP (0) = relocation;
707 
          OP (1) = relocation >> 8;
708 
          break;
709 
 
710 
        case R_RL78_ABS16U:
711 
          RL78_STACK_POP (relocation);
712 
          RANGE (0, 65536);
713 
          OP (0) = relocation;
714 
          OP (1) = relocation >> 8;
715 
          break;
716 
 
717 
        case R_RL78_ABS16UL:
718 
          RL78_STACK_POP (relocation);
719 
          relocation >>= 2;
720 
          RANGE (0, 65536);
721 
          OP (0) = relocation;
722 
          OP (1) = relocation >> 8;
723 
          break;
724 
 
725 
        case R_RL78_ABS16UW:
726 
          RL78_STACK_POP (relocation);
727 
          relocation >>= 1;
728 
          RANGE (0, 65536);
729 
          OP (0) = relocation;
730 
          OP (1) = relocation >> 8;
731 
          break;
732 
 
733 
        case R_RL78_ABS8:
734 
          RL78_STACK_POP (relocation);
735 
          RANGE (-128, 255);
736 
          OP (0) = relocation;
737 
          break;
738 
 
739 
        case R_RL78_ABS8U:
740 
          RL78_STACK_POP (relocation);
741 
          RANGE (0, 255);
742 
          OP (0) = relocation;
743 
          break;
744 
 
745 
        case R_RL78_ABS8UL:
746 
          RL78_STACK_POP (relocation);
747 
          relocation >>= 2;
748 
          RANGE (0, 255);
749 
          OP (0) = relocation;
750 
          break;
751 
 
752 
        case R_RL78_ABS8UW:
753 
          RL78_STACK_POP (relocation);
754 
          relocation >>= 1;
755 
          RANGE (0, 255);
756 
          OP (0) = relocation;
757 
          break;
758 
 
759 
        case R_RL78_ABS8S_PCREL:
760 
        case R_RL78_ABS8S:
761 
          RL78_STACK_POP (relocation);
762 
          RANGE (-128, 127);
763 
          OP (0) = relocation;
764 
          break;
765 
 
766 
        case R_RL78_SYM:
767 
          if (r_symndx < symtab_hdr->sh_info)
768 
            RL78_STACK_PUSH (sec->output_section->vma
769 
                           + sec->output_offset
770 
                           + sym->st_value
771 
                           + rel->r_addend);
772 
          else
773 
            {
774 
              if (h != NULL
775 
                  && (h->root.type == bfd_link_hash_defined
776 
                      || h->root.type == bfd_link_hash_defweak))
777 
                RL78_STACK_PUSH (h->root.u.def.value
778 
                               + sec->output_section->vma
779 
                               + sec->output_offset
780 
                               + rel->r_addend);
781 
              else
782 
                _bfd_error_handler (_("Warning: RL78_SYM reloc with an unknown symbol"));
783 
            }
784 
          break;
785 
 
786 
        case R_RL78_OPneg:
787 
          {
788 
            int32_t tmp;
789 
 
790 
            RL78_STACK_POP (tmp);
791 
            tmp = - tmp;
792 
            RL78_STACK_PUSH (tmp);
793 
          }
794 
          break;
795 
 
796 
        case R_RL78_OPadd:
797 
          {
798 
            int32_t tmp1, tmp2;
799 
 
800 
            RL78_STACK_POP (tmp2);
801 
            RL78_STACK_POP (tmp1);
802 
            tmp1 += tmp2;
803 
            RL78_STACK_PUSH (tmp1);
804 
          }
805 
          break;
806 
 
807 
        case R_RL78_OPsub:
808 
          {
809 
            int32_t tmp1, tmp2;
810 
 
811 
            RL78_STACK_POP (tmp2);
812 
            RL78_STACK_POP (tmp1);
813 
            tmp2 -= tmp1;
814 
            RL78_STACK_PUSH (tmp2);
815 
          }
816 
          break;
817 
 
818 
        case R_RL78_OPmul:
819 
          {
820 
            int32_t tmp1, tmp2;
821 
 
822 
            RL78_STACK_POP (tmp2);
823 
            RL78_STACK_POP (tmp1);
824 
            tmp1 *= tmp2;
825 
            RL78_STACK_PUSH (tmp1);
826 
          }
827 
          break;
828 
 
829 
        case R_RL78_OPdiv:
830 
          {
831 
            int32_t tmp1, tmp2;
832 
 
833 
            RL78_STACK_POP (tmp2);
834 
            RL78_STACK_POP (tmp1);
835 
            tmp1 /= tmp2;
836 
            RL78_STACK_PUSH (tmp1);
837 
          }
838 
          break;
839 
 
840 
        case R_RL78_OPshla:
841 
          {
842 
            int32_t tmp1, tmp2;
843 
 
844 
            RL78_STACK_POP (tmp2);
845 
            RL78_STACK_POP (tmp1);
846 
            tmp1 <<= tmp2;
847 
            RL78_STACK_PUSH (tmp1);
848 
          }
849 
          break;
850 
 
851 
        case R_RL78_OPshra:
852 
          {
853 
            int32_t tmp1, tmp2;
854 
 
855 
            RL78_STACK_POP (tmp2);
856 
            RL78_STACK_POP (tmp1);
857 
            tmp1 >>= tmp2;
858 
            RL78_STACK_PUSH (tmp1);
859 
          }
860 
          break;
861 
 
862 
        case R_RL78_OPsctsize:
863 
          RL78_STACK_PUSH (input_section->size);
864 
          break;
865 
 
866 
        case R_RL78_OPscttop:
867 
          RL78_STACK_PUSH (input_section->output_section->vma);
868 
          break;
869 
 
870 
        case R_RL78_OPand:
871 
          {
872 
            int32_t tmp1, tmp2;
873 
 
874 
            RL78_STACK_POP (tmp2);
875 
            RL78_STACK_POP (tmp1);
876 
            tmp1 &= tmp2;
877 
            RL78_STACK_PUSH (tmp1);
878 
          }
879 
          break;
880 
 
881 
        case R_RL78_OPor:
882 
          {
883 
            int32_t tmp1, tmp2;
884 
 
885 
            RL78_STACK_POP (tmp2);
886 
            RL78_STACK_POP (tmp1);
887 
            tmp1 |= tmp2;
888 
            RL78_STACK_PUSH (tmp1);
889 
          }
890 
          break;
891 
 
892 
        case R_RL78_OPxor:
893 
          {
894 
            int32_t tmp1, tmp2;
895 
 
896 
            RL78_STACK_POP (tmp2);
897 
            RL78_STACK_POP (tmp1);
898 
            tmp1 ^= tmp2;
899 
            RL78_STACK_PUSH (tmp1);
900 
          }
901 
          break;
902 
 
903 
        case R_RL78_OPnot:
904 
          {
905 
            int32_t tmp;
906 
 
907 
            RL78_STACK_POP (tmp);
908 
            tmp = ~ tmp;
909 
            RL78_STACK_PUSH (tmp);
910 
          }
911 
          break;
912 
 
913 
        case R_RL78_OPmod:
914 
          {
915 
            int32_t tmp1, tmp2;
916 
 
917 
            RL78_STACK_POP (tmp2);
918 
            RL78_STACK_POP (tmp1);
919 
            tmp1 %= tmp2;
920 
            RL78_STACK_PUSH (tmp1);
921 
          }
922 
          break;
923 
 
924 
        case R_RL78_OPromtop:
925 
          RL78_STACK_PUSH (get_romstart (&r, info, input_bfd, input_section, rel->r_offset));
926 
          break;
927 
 
928 
        case R_RL78_OPramtop:
929 
          RL78_STACK_PUSH (get_ramstart (&r, info, input_bfd, input_section, rel->r_offset));
930 
          break;
931 
 
932 
        default:
933 
          r = bfd_reloc_notsupported;
934 
          break;
935 
        }
936 
 
937 
      if (r != bfd_reloc_ok)
938 
        {
939 
          const char * msg = NULL;
940 
 
941 
          switch (r)
942 
            {
943 
            case bfd_reloc_overflow:
944 
              /* Catch the case of a missing function declaration
945 
                 and emit a more helpful error message.  */
946 
              if (r_type == R_RL78_DIR24S_PCREL)
947 
                msg = _("%B(%A): error: call to undefined function '%s'");
948 
              else
949 
                r = info->callbacks->reloc_overflow
950 
                  (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
951 
                   input_bfd, input_section, rel->r_offset);
952 
              break;
953 
 
954 
            case bfd_reloc_undefined:
955 
              r = info->callbacks->undefined_symbol
956 
                (info, name, input_bfd, input_section, rel->r_offset,
957 
                 TRUE);
958 
              break;
959 
 
960 
            case bfd_reloc_other:
961 
              msg = _("%B(%A): warning: unaligned access to symbol '%s' in the small data area");
962 
              break;
963 
 
964 
            case bfd_reloc_outofrange:
965 
              msg = _("%B(%A): internal error: out of range error");
966 
              break;
967 
 
968 
            case bfd_reloc_notsupported:
969 
              msg = _("%B(%A): internal error: unsupported relocation error");
970 
              break;
971 
 
972 
            case bfd_reloc_dangerous:
973 
              msg = _("%B(%A): internal error: dangerous relocation");
974 
              break;
975 
 
976 
            default:
977 
              msg = _("%B(%A): internal error: unknown error");
978 
              break;
979 
            }
980 
 
981 
          if (msg)
982 
            _bfd_error_handler (msg, input_bfd, input_section, name);
983 
 
984 
          if (! r)
985 
            return FALSE;
986 
        }
987 
    }
988 
 
989 
  return TRUE;
990 
}
991 
 
992 
/* Function to set the ELF flag bits.  */
993 
 
994 
static bfd_boolean
995 
rl78_elf_set_private_flags (bfd * abfd, flagword flags)
996 
{
997 
  elf_elfheader (abfd)->e_flags = flags;
998 
  elf_flags_init (abfd) = TRUE;
999 
  return TRUE;
1000 
}
1001 
 
1002 
static bfd_boolean no_warn_mismatch = FALSE;
1003 
 
1004 
void bfd_elf32_rl78_set_target_flags (bfd_boolean);
1005 
 
1006 
void
1007 
bfd_elf32_rl78_set_target_flags (bfd_boolean user_no_warn_mismatch)
1008 
{
1009 
  no_warn_mismatch = user_no_warn_mismatch;
1010 
}
1011 
 
1012 
/* Merge backend specific data from an object file to the output
1013 
   object file when linking.  */
1014 
 
1015 
static bfd_boolean
1016 
rl78_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
1017 
{
1018 
  flagword new_flags;
1019 
  bfd_boolean error = FALSE;
1020 
 
1021 
  new_flags = elf_elfheader (ibfd)->e_flags;
1022 
 
1023 
  if (!elf_flags_init (obfd))
1024 
    {
1025 
      /* First call, no flags set.  */
1026 
      elf_flags_init (obfd) = TRUE;
1027 
      elf_elfheader (obfd)->e_flags = new_flags;
1028 
    }
1029 
 
1030 
  return !error;
1031 
}
1032 
 
1033 
static bfd_boolean
1034 
rl78_elf_print_private_bfd_data (bfd * abfd, void * ptr)
1035 
{
1036 
  FILE * file = (FILE *) ptr;
1037 
  flagword flags;
1038 
 
1039 
  BFD_ASSERT (abfd != NULL && ptr != NULL);
1040 
 
1041 
  /* Print normal ELF private data.  */
1042 
  _bfd_elf_print_private_bfd_data (abfd, ptr);
1043 
 
1044 
  flags = elf_elfheader (abfd)->e_flags;
1045 
  fprintf (file, _("private flags = 0x%lx:"), (long) flags);
1046 
 
1047 
  fputc ('\n', file);
1048 
  return TRUE;
1049 
}
1050 
 
1051 
/* Return the MACH for an e_flags value.  */
1052 
 
1053 
static int
1054 
elf32_rl78_machine (bfd * abfd)
1055 
{
1056 
  if ((elf_elfheader (abfd)->e_flags & EF_RL78_CPU_MASK) == EF_RL78_CPU_RL78)
1057 
    return bfd_mach_rl78;
1058 
 
1059 
  return 0;
1060 
}
1061 
 
1062 
static bfd_boolean
1063 
rl78_elf_object_p (bfd * abfd)
1064 
{
1065 
  bfd_default_set_arch_mach (abfd, bfd_arch_rl78,
1066 
                             elf32_rl78_machine (abfd));
1067 
  return TRUE;
1068 
}
1069 
 
1070 
#ifdef DEBUG
1071 
void
1072 
rl78_dump_symtab (bfd * abfd, void * internal_syms, void * external_syms)
1073 
{
1074 
  size_t locsymcount;
1075 
  Elf_Internal_Sym * isymbuf;
1076 
  Elf_Internal_Sym * isymend;
1077 
  Elf_Internal_Sym * isym;
1078 
  Elf_Internal_Shdr * symtab_hdr;
1079 
  bfd_boolean free_internal = FALSE, free_external = FALSE;
1080 
  char * st_info_str;
1081 
  char * st_info_stb_str;
1082 
  char * st_other_str;
1083 
  char * st_shndx_str;
1084 
 
1085 
  if (! internal_syms)
1086 
    {
1087 
      internal_syms = bfd_malloc (1000);
1088 
      free_internal = 1;
1089 
    }
1090 
  if (! external_syms)
1091 
    {
1092 
      external_syms = bfd_malloc (1000);
1093 
      free_external = 1;
1094 
    }
1095 
 
1096 
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1097 
  locsymcount = symtab_hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
1098 
  if (free_internal)
1099 
    isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
1100 
                                    symtab_hdr->sh_info, 0,
1101 
                                    internal_syms, external_syms, NULL);
1102 
  else
1103 
    isymbuf = internal_syms;
1104 
  isymend = isymbuf + locsymcount;
1105 
 
1106 
  for (isym = isymbuf ; isym < isymend ; isym++)
1107 
    {
1108 
      switch (ELF_ST_TYPE (isym->st_info))
1109 
        {
1110 
        case STT_FUNC: st_info_str = "STT_FUNC";
1111 
        case STT_SECTION: st_info_str = "STT_SECTION";
1112 
        case STT_FILE: st_info_str = "STT_FILE";
1113 
        case STT_OBJECT: st_info_str = "STT_OBJECT";
1114 
        case STT_TLS: st_info_str = "STT_TLS";
1115 
        default: st_info_str = "";
1116 
        }
1117 
      switch (ELF_ST_BIND (isym->st_info))
1118 
        {
1119 
        case STB_LOCAL: st_info_stb_str = "STB_LOCAL";
1120 
        case STB_GLOBAL: st_info_stb_str = "STB_GLOBAL";
1121 
        default: st_info_stb_str = "";
1122 
        }
1123 
      switch (ELF_ST_VISIBILITY (isym->st_other))
1124 
        {
1125 
        case STV_DEFAULT: st_other_str = "STV_DEFAULT";
1126 
        case STV_INTERNAL: st_other_str = "STV_INTERNAL";
1127 
        case STV_PROTECTED: st_other_str = "STV_PROTECTED";
1128 
        default: st_other_str = "";
1129 
        }
1130 
      switch (isym->st_shndx)
1131 
        {
1132 
        case SHN_ABS: st_shndx_str = "SHN_ABS";
1133 
        case SHN_COMMON: st_shndx_str = "SHN_COMMON";
1134 
        case SHN_UNDEF: st_shndx_str = "SHN_UNDEF";
1135 
        default: st_shndx_str = "";
1136 
        }
1137 
    }
1138 
  if (free_internal)
1139 
    free (internal_syms);
1140 
  if (free_external)
1141 
    free (external_syms);
1142 
}
1143 
 
1144 
char *
1145 
rl78_get_reloc (long reloc)
1146 
{
1147 
  if (0 <= reloc && reloc < R_RL78_max)
1148 
    return rl78_elf_howto_table[reloc].name;
1149 
  return "";
1150 
}
1151 
#endif /* DEBUG */
1152 
 
1153 
 
1154 
/* support PLT for 16-bit references to 24-bit functions.  */
1155 
 
1156 
/* We support 16-bit pointers to code above 64k by generating a thunk
1157 
   below 64k containing a JMP instruction to the final address.  */
1158 
 
1159 
static bfd_boolean
1160 
rl78_elf_check_relocs
1161 
    (bfd *                     abfd,
1162 
     struct bfd_link_info *    info,
1163 
     asection *                sec,
1164 
     const Elf_Internal_Rela * relocs)
1165 
{
1166 
  Elf_Internal_Shdr *           symtab_hdr;
1167 
  struct elf_link_hash_entry ** sym_hashes;
1168 
  const Elf_Internal_Rela *     rel;
1169 
  const Elf_Internal_Rela *     rel_end;
1170 
  bfd_vma *local_plt_offsets;
1171 
  asection *splt;
1172 
  bfd *dynobj;
1173 
 
1174 
  if (info->relocatable)
1175 
    return TRUE;
1176 
 
1177 
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1178 
  sym_hashes = elf_sym_hashes (abfd);
1179 
  local_plt_offsets = elf_local_got_offsets (abfd);
1180 
  splt = NULL;
1181 
  dynobj = elf_hash_table(info)->dynobj;
1182 
 
1183 
  rel_end = relocs + sec->reloc_count;
1184 
  for (rel = relocs; rel < rel_end; rel++)
1185 
    {
1186 
      struct elf_link_hash_entry *h;
1187 
      unsigned long r_symndx;
1188 
      bfd_vma *offset;
1189 
 
1190 
      r_symndx = ELF32_R_SYM (rel->r_info);
1191 
      if (r_symndx < symtab_hdr->sh_info)
1192 
        h = NULL;
1193 
      else
1194 
        {
1195 
          h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1196 
          while (h->root.type == bfd_link_hash_indirect
1197 
                 || h->root.type == bfd_link_hash_warning)
1198 
            h = (struct elf_link_hash_entry *) h->root.u.i.link;
1199 
        }
1200 
 
1201 
      switch (ELF32_R_TYPE (rel->r_info))
1202 
        {
1203 
          /* This relocation describes a 16-bit pointer to a function.
1204 
             We may need to allocate a thunk in low memory; reserve memory
1205 
             for it now.  */
1206 
        case R_RL78_DIR16S:
1207 
          if (dynobj == NULL)
1208 
            elf_hash_table (info)->dynobj = dynobj = abfd;
1209 
          if (splt == NULL)
1210 
            {
1211 
              splt = bfd_get_section_by_name (dynobj, ".plt");
1212 
              if (splt == NULL)
1213 
                {
1214 
                  flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1215 
                                    | SEC_IN_MEMORY | SEC_LINKER_CREATED
1216 
                                    | SEC_READONLY | SEC_CODE);
1217 
                  splt = bfd_make_section_with_flags (dynobj, ".plt", flags);
1218 
                  if (splt == NULL
1219 
                      || ! bfd_set_section_alignment (dynobj, splt, 1))
1220 
                    return FALSE;
1221 
                }
1222 
            }
1223 
 
1224 
          if (h != NULL)
1225 
            offset = &h->plt.offset;
1226 
          else
1227 
            {
1228 
              if (local_plt_offsets == NULL)
1229 
                {
1230 
                  size_t size;
1231 
                  unsigned int i;
1232 
 
1233 
                  size = symtab_hdr->sh_info * sizeof (bfd_vma);
1234 
                  local_plt_offsets = (bfd_vma *) bfd_alloc (abfd, size);
1235 
                  if (local_plt_offsets == NULL)
1236 
                    return FALSE;
1237 
                  elf_local_got_offsets (abfd) = local_plt_offsets;
1238 
 
1239 
                  for (i = 0; i < symtab_hdr->sh_info; i++)
1240 
                    local_plt_offsets[i] = (bfd_vma) -1;
1241 
                }
1242 
              offset = &local_plt_offsets[r_symndx];
1243 
            }
1244 
 
1245 
          if (*offset == (bfd_vma) -1)
1246 
            {
1247 
              *offset = splt->size;
1248 
              splt->size += 4;
1249 
            }
1250 
          break;
1251 
        }
1252 
    }
1253 
 
1254 
  return TRUE;
1255 
}
1256 
 
1257 
/* This must exist if dynobj is ever set.  */
1258 
 
1259 
static bfd_boolean
1260 
rl78_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED,
1261 
                                  struct bfd_link_info *info)
1262 
{
1263 
  bfd *dynobj;
1264 
  asection *splt;
1265 
 
1266 166 khays 
  /* As an extra sanity check, verify that all plt entries have been
1267 
     filled in.  However, relaxing might have changed the relocs so
1268 
     that some plt entries don't get filled in, so we have to skip
1269 
     this check if we're relaxing.  Unfortunately, check_relocs is
1270 
     called before relaxation.  */
1271 163 khays 
 
1272 166 khays 
  if (info->relax_trip > 0)
1273 163 khays 
    {
1274 166 khays 
      if ((dynobj = elf_hash_table (info)->dynobj) != NULL
1275 
          && (splt = bfd_get_section_by_name (dynobj, ".plt")) != NULL)
1276 163 khays 
        {
1277 166 khays 
          bfd_byte *contents = splt->contents;
1278 
          unsigned int i, size = splt->size;
1279 
          for (i = 0; i < size; i += 4)
1280 
            {
1281 
              unsigned int x = bfd_get_32 (dynobj, contents + i);
1282 
              BFD_ASSERT (x != 0);
1283 
            }
1284 163 khays 
        }
1285 
    }
1286 
 
1287 
  return TRUE;
1288 
}
1289 
 
1290 
static bfd_boolean
1291 
rl78_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1292 
                               struct bfd_link_info *info)
1293 
{
1294 
  bfd *dynobj;
1295 
  asection *splt;
1296 
 
1297 
  if (info->relocatable)
1298 
    return TRUE;
1299 
 
1300 
  dynobj = elf_hash_table (info)->dynobj;
1301 
  if (dynobj == NULL)
1302 
    return TRUE;
1303 
 
1304 
  splt = bfd_get_section_by_name (dynobj, ".plt");
1305 
  BFD_ASSERT (splt != NULL);
1306 
 
1307 
  splt->contents = (bfd_byte *) bfd_zalloc (dynobj, splt->size);
1308 
  if (splt->contents == NULL)
1309 
    return FALSE;
1310 
 
1311 
  return TRUE;
1312 
}
1313 
 
1314 
 
1315 
 
1316 
/* Handle relaxing.  */
1317 
 
1318 
/* A subroutine of rl78_elf_relax_section.  If the global symbol H
1319 
   is within the low 64k, remove any entry for it in the plt.  */
1320 
 
1321 
struct relax_plt_data
1322 
{
1323 
  asection *splt;
1324 
  bfd_boolean *again;
1325 
};
1326 
 
1327 
static bfd_boolean
1328 
rl78_relax_plt_check (struct elf_link_hash_entry *h,
1329 
                      PTR xdata)
1330 
{
1331 
  struct relax_plt_data *data = (struct relax_plt_data *) xdata;
1332 
 
1333 
  if (h->plt.offset != (bfd_vma) -1)
1334 
    {
1335 
      bfd_vma address;
1336 
 
1337 
      if (h->root.type == bfd_link_hash_undefined
1338 
          || h->root.type == bfd_link_hash_undefweak)
1339 
        address = 0;
1340 
      else
1341 
        address = (h->root.u.def.section->output_section->vma
1342 
                   + h->root.u.def.section->output_offset
1343 
                   + h->root.u.def.value);
1344 
 
1345 
      if (valid_16bit_address (address))
1346 
        {
1347 
          h->plt.offset = -1;
1348 
          data->splt->size -= 4;
1349 
          *data->again = TRUE;
1350 
        }
1351 
    }
1352 
 
1353 
  return TRUE;
1354 
}
1355 
 
1356 
/* A subroutine of rl78_elf_relax_section.  If the global symbol H
1357 
   previously had a plt entry, give it a new entry offset.  */
1358 
 
1359 
static bfd_boolean
1360 
rl78_relax_plt_realloc (struct elf_link_hash_entry *h,
1361 
                        PTR xdata)
1362 
{
1363 
  bfd_vma *entry = (bfd_vma *) xdata;
1364 
 
1365 
  if (h->plt.offset != (bfd_vma) -1)
1366 
    {
1367 
      h->plt.offset = *entry;
1368 
      *entry += 4;
1369 
    }
1370 
 
1371 
  return TRUE;
1372 
}
1373 
 
1374 
static bfd_boolean
1375 
rl78_elf_relax_plt_section (bfd *dynobj,
1376 
                            asection *splt,
1377 
                            struct bfd_link_info *info,
1378 
                            bfd_boolean *again)
1379 
{
1380 
  struct relax_plt_data relax_plt_data;
1381 
  bfd *ibfd;
1382 
 
1383 
  /* Assume nothing changes.  */
1384 
  *again = FALSE;
1385 
 
1386 
  if (info->relocatable)
1387 
    return TRUE;
1388 
 
1389 
  /* We only relax the .plt section at the moment.  */
1390 
  if (dynobj != elf_hash_table (info)->dynobj
1391 
      || strcmp (splt->name, ".plt") != 0)
1392 
    return TRUE;
1393 
 
1394 
  /* Quick check for an empty plt.  */
1395 
  if (splt->size == 0)
1396 
    return TRUE;
1397 
 
1398 
  /* Map across all global symbols; see which ones happen to
1399 
     fall in the low 64k.  */
1400 
  relax_plt_data.splt = splt;
1401 
  relax_plt_data.again = again;
1402 
  elf_link_hash_traverse (elf_hash_table (info), rl78_relax_plt_check,
1403 
                          &relax_plt_data);
1404 
 
1405 
  /* Likewise for local symbols, though that's somewhat less convenient
1406 
     as we have to walk the list of input bfds and swap in symbol data.  */
1407 
  for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
1408 
    {
1409 
      bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
1410 
      Elf_Internal_Shdr *symtab_hdr;
1411 
      Elf_Internal_Sym *isymbuf = NULL;
1412 
      unsigned int idx;
1413 
 
1414 
      if (! local_plt_offsets)
1415 
        continue;
1416 
 
1417 
      symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
1418 
      if (symtab_hdr->sh_info != 0)
1419 
        {
1420 
          isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1421 
          if (isymbuf == NULL)
1422 
            isymbuf = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
1423 
                                            symtab_hdr->sh_info, 0,
1424 
                                            NULL, NULL, NULL);
1425 
          if (isymbuf == NULL)
1426 
            return FALSE;
1427 
        }
1428 
 
1429 
      for (idx = 0; idx < symtab_hdr->sh_info; ++idx)
1430 
        {
1431 
          Elf_Internal_Sym *isym;
1432 
          asection *tsec;
1433 
          bfd_vma address;
1434 
 
1435 
          if (local_plt_offsets[idx] == (bfd_vma) -1)
1436 
            continue;
1437 
 
1438 
          isym = &isymbuf[idx];
1439 
          if (isym->st_shndx == SHN_UNDEF)
1440 
            continue;
1441 
          else if (isym->st_shndx == SHN_ABS)
1442 
            tsec = bfd_abs_section_ptr;
1443 
          else if (isym->st_shndx == SHN_COMMON)
1444 
            tsec = bfd_com_section_ptr;
1445 
          else
1446 
            tsec = bfd_section_from_elf_index (ibfd, isym->st_shndx);
1447 
 
1448 
          address = (tsec->output_section->vma
1449 
                     + tsec->output_offset
1450 
                     + isym->st_value);
1451 
          if (valid_16bit_address (address))
1452 
            {
1453 
              local_plt_offsets[idx] = -1;
1454 
              splt->size -= 4;
1455 
              *again = TRUE;
1456 
            }
1457 
        }
1458 
 
1459 
      if (isymbuf != NULL
1460 
          && symtab_hdr->contents != (unsigned char *) isymbuf)
1461 
        {
1462 
          if (! info->keep_memory)
1463 
            free (isymbuf);
1464 
          else
1465 
            {
1466 
              /* Cache the symbols for elf_link_input_bfd.  */
1467 
              symtab_hdr->contents = (unsigned char *) isymbuf;
1468 
            }
1469 
        }
1470 
    }
1471 
 
1472 
  /* If we changed anything, walk the symbols again to reallocate
1473 
     .plt entry addresses.  */
1474 
  if (*again && splt->size > 0)
1475 
    {
1476 
      bfd_vma entry = 0;
1477 
 
1478 
      elf_link_hash_traverse (elf_hash_table (info),
1479 
                              rl78_relax_plt_realloc, &entry);
1480 
 
1481 
      for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
1482 
        {
1483 
          bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
1484 
          unsigned int nlocals = elf_tdata (ibfd)->symtab_hdr.sh_info;
1485 
          unsigned int idx;
1486 
 
1487 
          if (! local_plt_offsets)
1488 
            continue;
1489 
 
1490 
          for (idx = 0; idx < nlocals; ++idx)
1491 
            if (local_plt_offsets[idx] != (bfd_vma) -1)
1492 
              {
1493 
                local_plt_offsets[idx] = entry;
1494 
                entry += 4;
1495 
              }
1496 
        }
1497 
    }
1498 
 
1499 
  return TRUE;
1500 
}
1501 
 
1502 166 khays 
/* Delete some bytes from a section while relaxing.  */
1503 
 
1504 163 khays 
static bfd_boolean
1505 166 khays 
elf32_rl78_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count,
1506 
                             Elf_Internal_Rela *alignment_rel, int force_snip)
1507 
{
1508 
  Elf_Internal_Shdr * symtab_hdr;
1509 
  unsigned int        sec_shndx;
1510 
  bfd_byte *          contents;
1511 
  Elf_Internal_Rela * irel;
1512 
  Elf_Internal_Rela * irelend;
1513 
  Elf_Internal_Sym *  isym;
1514 
  Elf_Internal_Sym *  isymend;
1515 
  bfd_vma             toaddr;
1516 
  unsigned int        symcount;
1517 
  struct elf_link_hash_entry ** sym_hashes;
1518 
  struct elf_link_hash_entry ** end_hashes;
1519 
 
1520 
  if (!alignment_rel)
1521 
    force_snip = 1;
1522 
 
1523 
  sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
1524 
 
1525 
  contents = elf_section_data (sec)->this_hdr.contents;
1526 
 
1527 
  /* The deletion must stop at the next alignment boundary, if
1528 
     ALIGNMENT_REL is non-NULL.  */
1529 
  toaddr = sec->size;
1530 
  if (alignment_rel)
1531 
    toaddr = alignment_rel->r_offset;
1532 
 
1533 
  irel = elf_section_data (sec)->relocs;
1534 
  irelend = irel + sec->reloc_count;
1535 
 
1536 
  /* Actually delete the bytes.  */
1537 
  memmove (contents + addr, contents + addr + count,
1538 
           (size_t) (toaddr - addr - count));
1539 
 
1540 
  /* If we don't have an alignment marker to worry about, we can just
1541 
     shrink the section.  Otherwise, we have to fill in the newly
1542 
     created gap with NOP insns (0x03).  */
1543 
  if (force_snip)
1544 
    sec->size -= count;
1545 
  else
1546 
    memset (contents + toaddr - count, 0x03, count);
1547 
 
1548 
  /* Adjust all the relocs.  */
1549 
  for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
1550 
    {
1551 
      /* Get the new reloc address.  */
1552 
      if (irel->r_offset > addr
1553 
          && (irel->r_offset < toaddr
1554 
              || (force_snip && irel->r_offset == toaddr)))
1555 
        irel->r_offset -= count;
1556 
 
1557 
      /* If we see an ALIGN marker at the end of the gap, we move it
1558 
         to the beginning of the gap, since marking these gaps is what
1559 
         they're for.  */
1560 
      if (irel->r_offset == toaddr
1561 
          && ELF32_R_TYPE (irel->r_info) == R_RL78_RH_RELAX
1562 
          && irel->r_addend & RL78_RELAXA_ALIGN)
1563 
        irel->r_offset -= count;
1564 
    }
1565 
 
1566 
  /* Adjust the local symbols defined in this section.  */
1567 
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1568 
  isym = (Elf_Internal_Sym *) symtab_hdr->contents;
1569 
  isymend = isym + symtab_hdr->sh_info;
1570 
 
1571 
  for (; isym < isymend; isym++)
1572 
    {
1573 
      /* If the symbol is in the range of memory we just moved, we
1574 
         have to adjust its value.  */
1575 
      if (isym->st_shndx == sec_shndx
1576 
          && isym->st_value > addr
1577 
          && isym->st_value < toaddr)
1578 
        isym->st_value -= count;
1579 
 
1580 
      /* If the symbol *spans* the bytes we just deleted (i.e. it's
1581 
         *end* is in the moved bytes but it's *start* isn't), then we
1582 
         must adjust its size.  */
1583 
      if (isym->st_shndx == sec_shndx
1584 
          && isym->st_value < addr
1585 
          && isym->st_value + isym->st_size > addr
1586 
          && isym->st_value + isym->st_size < toaddr)
1587 
        isym->st_size -= count;
1588 
    }
1589 
 
1590 
  /* Now adjust the global symbols defined in this section.  */
1591 
  symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1592 
              - symtab_hdr->sh_info);
1593 
  sym_hashes = elf_sym_hashes (abfd);
1594 
  end_hashes = sym_hashes + symcount;
1595 
 
1596 
  for (; sym_hashes < end_hashes; sym_hashes++)
1597 
    {
1598 
      struct elf_link_hash_entry *sym_hash = *sym_hashes;
1599 
 
1600 
      if ((sym_hash->root.type == bfd_link_hash_defined
1601 
           || sym_hash->root.type == bfd_link_hash_defweak)
1602 
          && sym_hash->root.u.def.section == sec)
1603 
        {
1604 
          /* As above, adjust the value if needed.  */
1605 
          if (sym_hash->root.u.def.value > addr
1606 
              && sym_hash->root.u.def.value < toaddr)
1607 
            sym_hash->root.u.def.value -= count;
1608 
 
1609 
          /* As above, adjust the size if needed.  */
1610 
          if (sym_hash->root.u.def.value < addr
1611 
              && sym_hash->root.u.def.value + sym_hash->size > addr
1612 
              && sym_hash->root.u.def.value + sym_hash->size < toaddr)
1613 
            sym_hash->size -= count;
1614 
        }
1615 
    }
1616 
 
1617 
  return TRUE;
1618 
}
1619 
 
1620 
/* Used to sort relocs by address.  If relocs have the same address,
1621 
   we maintain their relative order, except that R_RL78_RH_RELAX
1622 
   alignment relocs must be the first reloc for any given address.  */
1623 
 
1624 
static void
1625 
reloc_bubblesort (Elf_Internal_Rela * r, int count)
1626 
{
1627 
  int i;
1628 
  bfd_boolean again;
1629 
  bfd_boolean swappit;
1630 
 
1631 
  /* This is almost a classic bubblesort.  It's the slowest sort, but
1632 
     we're taking advantage of the fact that the relocations are
1633 
     mostly in order already (the assembler emits them that way) and
1634 
     we need relocs with the same address to remain in the same
1635 
     relative order.  */
1636 
  again = TRUE;
1637 
  while (again)
1638 
    {
1639 
      again = FALSE;
1640 
      for (i = 0; i < count - 1; i ++)
1641 
        {
1642 
          if (r[i].r_offset > r[i + 1].r_offset)
1643 
            swappit = TRUE;
1644 
          else if (r[i].r_offset < r[i + 1].r_offset)
1645 
            swappit = FALSE;
1646 
          else if (ELF32_R_TYPE (r[i + 1].r_info) == R_RL78_RH_RELAX
1647 
                   && (r[i + 1].r_addend & RL78_RELAXA_ALIGN))
1648 
            swappit = TRUE;
1649 
          else if (ELF32_R_TYPE (r[i + 1].r_info) == R_RL78_RH_RELAX
1650 
                   && (r[i + 1].r_addend & RL78_RELAXA_ELIGN)
1651 
                   && !(ELF32_R_TYPE (r[i].r_info) == R_RL78_RH_RELAX
1652 
                        && (r[i].r_addend & RL78_RELAXA_ALIGN)))
1653 
            swappit = TRUE;
1654 
          else
1655 
            swappit = FALSE;
1656 
 
1657 
          if (swappit)
1658 
            {
1659 
              Elf_Internal_Rela tmp;
1660 
 
1661 
              tmp = r[i];
1662 
              r[i] = r[i + 1];
1663 
              r[i + 1] = tmp;
1664 
              /* If we do move a reloc back, re-scan to see if it
1665 
                 needs to be moved even further back.  This avoids
1666 
                 most of the O(n^2) behavior for our cases.  */
1667 
              if (i > 0)
1668 
                i -= 2;
1669 
              again = TRUE;
1670 
            }
1671 
        }
1672 
    }
1673 
}
1674 
 
1675 
 
1676 
#define OFFSET_FOR_RELOC(rel, lrel, scale) \
1677 
  rl78_offset_for_reloc (abfd, rel + 1, symtab_hdr, shndx_buf, intsyms, \
1678 
                       lrel, abfd, sec, link_info, scale)
1679 
 
1680 
static bfd_vma
1681 
rl78_offset_for_reloc (bfd *                    abfd,
1682 
                     Elf_Internal_Rela *      rel,
1683 
                     Elf_Internal_Shdr *      symtab_hdr,
1684 
                     Elf_External_Sym_Shndx * shndx_buf ATTRIBUTE_UNUSED,
1685 
                     Elf_Internal_Sym *       intsyms,
1686 
                     Elf_Internal_Rela **     lrel,
1687 
                     bfd *                    input_bfd,
1688 
                     asection *               input_section,
1689 
                     struct bfd_link_info *   info,
1690 
                     int *                    scale)
1691 
{
1692 
  bfd_vma symval;
1693 
  bfd_reloc_status_type r;
1694 
 
1695 
  *scale = 1;
1696 
 
1697 
  /* REL is the first of 1..N relocations.  We compute the symbol
1698 
     value for each relocation, then combine them if needed.  LREL
1699 
     gets a pointer to the last relocation used.  */
1700 
  while (1)
1701 
    {
1702 
      int32_t tmp1, tmp2;
1703 
 
1704 
      /* Get the value of the symbol referred to by the reloc.  */
1705 
      if (ELF32_R_SYM (rel->r_info) < symtab_hdr->sh_info)
1706 
        {
1707 
          /* A local symbol.  */
1708 
          Elf_Internal_Sym *isym;
1709 
          asection *ssec;
1710 
 
1711 
          isym = intsyms + ELF32_R_SYM (rel->r_info);
1712 
 
1713 
          if (isym->st_shndx == SHN_UNDEF)
1714 
            ssec = bfd_und_section_ptr;
1715 
          else if (isym->st_shndx == SHN_ABS)
1716 
            ssec = bfd_abs_section_ptr;
1717 
          else if (isym->st_shndx == SHN_COMMON)
1718 
            ssec = bfd_com_section_ptr;
1719 
          else
1720 
            ssec = bfd_section_from_elf_index (abfd,
1721 
                                               isym->st_shndx);
1722 
 
1723 
          /* Initial symbol value.  */
1724 
          symval = isym->st_value;
1725 
 
1726 
          /* GAS may have made this symbol relative to a section, in
1727 
             which case, we have to add the addend to find the
1728 
             symbol.  */
1729 
          if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
1730 
            symval += rel->r_addend;
1731 
 
1732 
          if (ssec)
1733 
            {
1734 
              if ((ssec->flags & SEC_MERGE)
1735 
                  && ssec->sec_info_type == ELF_INFO_TYPE_MERGE)
1736 
                symval = _bfd_merged_section_offset (abfd, & ssec,
1737 
                                                     elf_section_data (ssec)->sec_info,
1738 
                                                     symval);
1739 
            }
1740 
 
1741 
          /* Now make the offset relative to where the linker is putting it.  */
1742 
          if (ssec)
1743 
            symval +=
1744 
              ssec->output_section->vma + ssec->output_offset;
1745 
 
1746 
          symval += rel->r_addend;
1747 
        }
1748 
      else
1749 
        {
1750 
          unsigned long indx;
1751 
          struct elf_link_hash_entry * h;
1752 
 
1753 
          /* An external symbol.  */
1754 
          indx = ELF32_R_SYM (rel->r_info) - symtab_hdr->sh_info;
1755 
          h = elf_sym_hashes (abfd)[indx];
1756 
          BFD_ASSERT (h != NULL);
1757 
 
1758 
          if (h->root.type != bfd_link_hash_defined
1759 
              && h->root.type != bfd_link_hash_defweak)
1760 
            {
1761 
              /* This appears to be a reference to an undefined
1762 
                 symbol.  Just ignore it--it will be caught by the
1763 
                 regular reloc processing.  */
1764 
              if (lrel)
1765 
                *lrel = rel;
1766 
              return 0;
1767 
            }
1768 
 
1769 
          symval = (h->root.u.def.value
1770 
                    + h->root.u.def.section->output_section->vma
1771 
                    + h->root.u.def.section->output_offset);
1772 
 
1773 
          symval += rel->r_addend;
1774 
        }
1775 
 
1776 
      switch (ELF32_R_TYPE (rel->r_info))
1777 
        {
1778 
        case R_RL78_SYM:
1779 
          RL78_STACK_PUSH (symval);
1780 
          break;
1781 
 
1782 
        case R_RL78_OPneg:
1783 
          RL78_STACK_POP (tmp1);
1784 
          tmp1 = - tmp1;
1785 
          RL78_STACK_PUSH (tmp1);
1786 
          break;
1787 
 
1788 
        case R_RL78_OPadd:
1789 
          RL78_STACK_POP (tmp1);
1790 
          RL78_STACK_POP (tmp2);
1791 
          tmp1 += tmp2;
1792 
          RL78_STACK_PUSH (tmp1);
1793 
          break;
1794 
 
1795 
        case R_RL78_OPsub:
1796 
          RL78_STACK_POP (tmp1);
1797 
          RL78_STACK_POP (tmp2);
1798 
          tmp2 -= tmp1;
1799 
          RL78_STACK_PUSH (tmp2);
1800 
          break;
1801 
 
1802 
        case R_RL78_OPmul:
1803 
          RL78_STACK_POP (tmp1);
1804 
          RL78_STACK_POP (tmp2);
1805 
          tmp1 *= tmp2;
1806 
          RL78_STACK_PUSH (tmp1);
1807 
          break;
1808 
 
1809 
        case R_RL78_OPdiv:
1810 
          RL78_STACK_POP (tmp1);
1811 
          RL78_STACK_POP (tmp2);
1812 
          tmp1 /= tmp2;
1813 
          RL78_STACK_PUSH (tmp1);
1814 
          break;
1815 
 
1816 
        case R_RL78_OPshla:
1817 
          RL78_STACK_POP (tmp1);
1818 
          RL78_STACK_POP (tmp2);
1819 
          tmp1 <<= tmp2;
1820 
          RL78_STACK_PUSH (tmp1);
1821 
          break;
1822 
 
1823 
        case R_RL78_OPshra:
1824 
          RL78_STACK_POP (tmp1);
1825 
          RL78_STACK_POP (tmp2);
1826 
          tmp1 >>= tmp2;
1827 
          RL78_STACK_PUSH (tmp1);
1828 
          break;
1829 
 
1830 
        case R_RL78_OPsctsize:
1831 
          RL78_STACK_PUSH (input_section->size);
1832 
          break;
1833 
 
1834 
        case R_RL78_OPscttop:
1835 
          RL78_STACK_PUSH (input_section->output_section->vma);
1836 
          break;
1837 
 
1838 
        case R_RL78_OPand:
1839 
          RL78_STACK_POP (tmp1);
1840 
          RL78_STACK_POP (tmp2);
1841 
          tmp1 &= tmp2;
1842 
          RL78_STACK_PUSH (tmp1);
1843 
          break;
1844 
 
1845 
        case R_RL78_OPor:
1846 
          RL78_STACK_POP (tmp1);
1847 
          RL78_STACK_POP (tmp2);
1848 
          tmp1 |= tmp2;
1849 
          RL78_STACK_PUSH (tmp1);
1850 
          break;
1851 
 
1852 
        case R_RL78_OPxor:
1853 
          RL78_STACK_POP (tmp1);
1854 
          RL78_STACK_POP (tmp2);
1855 
          tmp1 ^= tmp2;
1856 
          RL78_STACK_PUSH (tmp1);
1857 
          break;
1858 
 
1859 
        case R_RL78_OPnot:
1860 
          RL78_STACK_POP (tmp1);
1861 
          tmp1 = ~ tmp1;
1862 
          RL78_STACK_PUSH (tmp1);
1863 
          break;
1864 
 
1865 
        case R_RL78_OPmod:
1866 
          RL78_STACK_POP (tmp1);
1867 
          RL78_STACK_POP (tmp2);
1868 
          tmp1 %= tmp2;
1869 
          RL78_STACK_PUSH (tmp1);
1870 
          break;
1871 
 
1872 
        case R_RL78_OPromtop:
1873 
          RL78_STACK_PUSH (get_romstart (&r, info, input_bfd, input_section, rel->r_offset));
1874 
          break;
1875 
 
1876 
        case R_RL78_OPramtop:
1877 
          RL78_STACK_PUSH (get_ramstart (&r, info, input_bfd, input_section, rel->r_offset));
1878 
          break;
1879 
 
1880 
        case R_RL78_DIR16UL:
1881 
        case R_RL78_DIR8UL:
1882 
        case R_RL78_ABS16UL:
1883 
        case R_RL78_ABS8UL:
1884 
          if (rl78_stack_top)
1885 
            RL78_STACK_POP (symval);
1886 
          if (lrel)
1887 
            *lrel = rel;
1888 
          *scale = 4;
1889 
          return symval;
1890 
 
1891 
        case R_RL78_DIR16UW:
1892 
        case R_RL78_DIR8UW:
1893 
        case R_RL78_ABS16UW:
1894 
        case R_RL78_ABS8UW:
1895 
          if (rl78_stack_top)
1896 
            RL78_STACK_POP (symval);
1897 
          if (lrel)
1898 
            *lrel = rel;
1899 
          *scale = 2;
1900 
          return symval;
1901 
 
1902 
        default:
1903 
          if (rl78_stack_top)
1904 
            RL78_STACK_POP (symval);
1905 
          if (lrel)
1906 
            *lrel = rel;
1907 
          return symval;
1908 
        }
1909 
 
1910 
      rel ++;
1911 
    }
1912 
}
1913 
 
1914 
struct {
1915 
  int prefix;           /* or -1 for "no prefix" */
1916 
  int insn;             /* or -1 for "end of list" */
1917 
  int insn_for_saddr;   /* or -1 for "no alternative" */
1918 
  int insn_for_sfr;     /* or -1 for "no alternative" */
1919 
} relax_addr16[] = {
1920 
  { -1, 0x02, 0x06, -1 },       /* ADDW AX, !addr16 */
1921 
  { -1, 0x22, 0x26, -1 },       /* SUBW AX, !addr16 */
1922 
  { -1, 0x42, 0x46, -1 },       /* CMPW AX, !addr16 */
1923 
  { -1, 0x40, 0x4a, -1 },       /* CMP  !addr16, #byte */
1924 
 
1925 
  { -1, 0x0f, 0x0b, -1 },       /* ADD  A, !addr16 */
1926 
  { -1, 0x1f, 0x1b, -1 },       /* ADDC A, !addr16 */
1927 
  { -1, 0x2f, 0x2b, -1 },       /* SUB  A, !addr16 */
1928 
  { -1, 0x3f, 0x3b, -1 },       /* SUBC A, !addr16 */
1929 
  { -1, 0x4f, 0x4b, -1 },       /* CMP  A, !addr16 */
1930 
  { -1, 0x5f, 0x5b, -1 },       /* AND  A, !addr16 */
1931 
  { -1, 0x6f, 0x6b, -1 },       /* OR   A, !addr16 */
1932 
  { -1, 0x7f, 0x7b, -1 },       /* XOR  A, !addr16 */
1933 
 
1934 
  { -1, 0x8f, 0x8d, 0x8e },     /* MOV  A, !addr16 */
1935 
  { -1, 0x9f, 0x9d, 0x9e },     /* MOV  !addr16, A */
1936 
  { -1, 0xaf, 0xad, 0xae },     /* MOVW AX, !addr16 */
1937 
  { -1, 0xbf, 0xbd, 0xbe },     /* MOVW !addr16, AX */
1938 
  { -1, 0xcf, 0xcd, 0xce },     /* MOVW !addr16, #word */
1939 
 
1940 
  { -1, 0xa0, 0xa4, -1 },       /* INC  !addr16 */
1941 
  { -1, 0xa2, 0xa6, -1 },       /* INCW !addr16 */
1942 
  { -1, 0xb0, 0xb4, -1 },       /* DEC  !addr16 */
1943 
  { -1, 0xb2, 0xb6, -1 },       /* DECW !addr16 */
1944 
 
1945 
  { -1, 0xd5, 0xd4, -1 },       /* CMP0 !addr16 */
1946 
  { -1, 0xe5, 0xe4, -1 },       /* ONEB !addr16 */
1947 
  { -1, 0xf5, 0xf4, -1 },       /* CLRB !addr16 */
1948 
 
1949 
  { -1, 0xd9, 0xd8, -1 },       /* MOV  X, !addr16 */
1950 
  { -1, 0xe9, 0xe8, -1 },       /* MOV  B, !addr16 */
1951 
  { -1, 0xf9, 0xf8, -1 },       /* MOV  C, !addr16 */
1952 
  { -1, 0xdb, 0xda, -1 },       /* MOVW BC, !addr16 */
1953 
  { -1, 0xeb, 0xea, -1 },       /* MOVW DE, !addr16 */
1954 
  { -1, 0xfb, 0xfa, -1 },       /* MOVW HL, !addr16 */
1955 
 
1956 
  { 0x61, 0xaa, 0xa8, -1 },     /* XCH  A, !addr16 */
1957 
 
1958 
  { 0x71, 0x00, 0x02, 0x0a },   /* SET1 !addr16.0 */
1959 
  { 0x71, 0x10, 0x12, 0x1a },   /* SET1 !addr16.0 */
1960 
  { 0x71, 0x20, 0x22, 0x2a },   /* SET1 !addr16.0 */
1961 
  { 0x71, 0x30, 0x32, 0x3a },   /* SET1 !addr16.0 */
1962 
  { 0x71, 0x40, 0x42, 0x4a },   /* SET1 !addr16.0 */
1963 
  { 0x71, 0x50, 0x52, 0x5a },   /* SET1 !addr16.0 */
1964 
  { 0x71, 0x60, 0x62, 0x6a },   /* SET1 !addr16.0 */
1965 
  { 0x71, 0x70, 0x72, 0x7a },   /* SET1 !addr16.0 */
1966 
 
1967 
  { 0x71, 0x08, 0x03, 0x0b },   /* CLR1 !addr16.0 */
1968 
  { 0x71, 0x18, 0x13, 0x1b },   /* CLR1 !addr16.0 */
1969 
  { 0x71, 0x28, 0x23, 0x2b },   /* CLR1 !addr16.0 */
1970 
  { 0x71, 0x38, 0x33, 0x3b },   /* CLR1 !addr16.0 */
1971 
  { 0x71, 0x48, 0x43, 0x4b },   /* CLR1 !addr16.0 */
1972 
  { 0x71, 0x58, 0x53, 0x5b },   /* CLR1 !addr16.0 */
1973 
  { 0x71, 0x68, 0x63, 0x6b },   /* CLR1 !addr16.0 */
1974 
  { 0x71, 0x78, 0x73, 0x7b },   /* CLR1 !addr16.0 */
1975 
 
1976 
  { -1, -1, -1, -1 }
1977 
};
1978 
 
1979 
/* Relax one section.  */
1980 
 
1981 
static bfd_boolean
1982 163 khays 
rl78_elf_relax_section
1983 
    (bfd *                  abfd,
1984 
     asection *             sec,
1985 
     struct bfd_link_info * link_info,
1986 
     bfd_boolean *          again)
1987 
{
1988 166 khays 
  Elf_Internal_Shdr * symtab_hdr;
1989 
  Elf_Internal_Shdr * shndx_hdr;
1990 
  Elf_Internal_Rela * internal_relocs;
1991 
  Elf_Internal_Rela * free_relocs = NULL;
1992 
  Elf_Internal_Rela * irel;
1993 
  Elf_Internal_Rela * srel;
1994 
  Elf_Internal_Rela * irelend;
1995 
  Elf_Internal_Rela * next_alignment;
1996 
  bfd_byte *          contents = NULL;
1997 
  bfd_byte *          free_contents = NULL;
1998 
  Elf_Internal_Sym *  intsyms = NULL;
1999 
  Elf_Internal_Sym *  free_intsyms = NULL;
2000 
  Elf_External_Sym_Shndx * shndx_buf = NULL;
2001 
  bfd_vma pc;
2002 
  bfd_vma symval ATTRIBUTE_UNUSED = 0;
2003 
  int pcrel ATTRIBUTE_UNUSED = 0;
2004 
  int code ATTRIBUTE_UNUSED = 0;
2005 
  int section_alignment_glue;
2006 
  int scale;
2007 
 
2008 163 khays 
  if (abfd == elf_hash_table (link_info)->dynobj
2009 
      && strcmp (sec->name, ".plt") == 0)
2010 
    return rl78_elf_relax_plt_section (abfd, sec, link_info, again);
2011 
 
2012 
  /* Assume nothing changes.  */
2013 
  *again = FALSE;
2014 166 khays 
 
2015 
  /* We don't have to do anything for a relocatable link, if
2016 
     this section does not have relocs, or if this is not a
2017 
     code section.  */
2018 
  if (link_info->relocatable
2019 
      || (sec->flags & SEC_RELOC) == 0
2020 
      || sec->reloc_count == 0
2021 
      || (sec->flags & SEC_CODE) == 0)
2022 
    return TRUE;
2023 
 
2024 
  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2025 
  shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
2026 
 
2027 
  /* Get the section contents.  */
2028 
  if (elf_section_data (sec)->this_hdr.contents != NULL)
2029 
    contents = elf_section_data (sec)->this_hdr.contents;
2030 
  /* Go get them off disk.  */
2031 
  else
2032 
    {
2033 
      if (! bfd_malloc_and_get_section (abfd, sec, &contents))
2034 
        goto error_return;
2035 
      elf_section_data (sec)->this_hdr.contents = contents;
2036 
    }
2037 
 
2038 
  /* Read this BFD's symbols.  */
2039 
  /* Get cached copy if it exists.  */
2040 
  if (symtab_hdr->contents != NULL)
2041 
    intsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
2042 
  else
2043 
    {
2044 
      intsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr, symtab_hdr->sh_info, 0, NULL, NULL, NULL);
2045 
      symtab_hdr->contents = (bfd_byte *) intsyms;
2046 
    }
2047 
 
2048 
  if (shndx_hdr->sh_size != 0)
2049 
    {
2050 
      bfd_size_type amt;
2051 
 
2052 
      amt = symtab_hdr->sh_info;
2053 
      amt *= sizeof (Elf_External_Sym_Shndx);
2054 
      shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
2055 
      if (shndx_buf == NULL)
2056 
        goto error_return;
2057 
      if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
2058 
          || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
2059 
        goto error_return;
2060 
      shndx_hdr->contents = (bfd_byte *) shndx_buf;
2061 
    }
2062 
 
2063 
  /* Get a copy of the native relocations.  */
2064 
  internal_relocs = (_bfd_elf_link_read_relocs
2065 
                     (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
2066 
                      link_info->keep_memory));
2067 
  if (internal_relocs == NULL)
2068 
    goto error_return;
2069 
  if (! link_info->keep_memory)
2070 
    free_relocs = internal_relocs;
2071 
 
2072 
  /* The RL_ relocs must be just before the operand relocs they go
2073 
     with, so we must sort them to guarantee this.  We use bubblesort
2074 
     instead of qsort so we can guarantee that relocs with the same
2075 
     address remain in the same relative order.  */
2076 
  reloc_bubblesort (internal_relocs, sec->reloc_count);
2077 
 
2078 
  /* Walk through them looking for relaxing opportunities.  */
2079 
  irelend = internal_relocs + sec->reloc_count;
2080 
 
2081 
 
2082 
  /* This will either be NULL or a pointer to the next alignment
2083 
     relocation.  */
2084 
  next_alignment = internal_relocs;
2085 
 
2086 
  /* We calculate worst case shrinkage caused by alignment directives.
2087 
     No fool-proof, but better than either ignoring the problem or
2088 
     doing heavy duty analysis of all the alignment markers in all
2089 
     input sections.  */
2090 
  section_alignment_glue = 0;
2091 
  for (irel = internal_relocs; irel < irelend; irel++)
2092 
      if (ELF32_R_TYPE (irel->r_info) == R_RL78_RH_RELAX
2093 
          && irel->r_addend & RL78_RELAXA_ALIGN)
2094 
        {
2095 
          int this_glue = 1 << (irel->r_addend & RL78_RELAXA_ANUM);
2096 
 
2097 
          if (section_alignment_glue < this_glue)
2098 
            section_alignment_glue = this_glue;
2099 
        }
2100 
  /* Worst case is all 0..N alignments, in order, causing 2*N-1 byte
2101 
     shrinkage.  */
2102 
  section_alignment_glue *= 2;
2103 
 
2104 
  for (irel = internal_relocs; irel < irelend; irel++)
2105 
    {
2106 
      unsigned char *insn;
2107 
      int nrelocs;
2108 
 
2109 
      /* The insns we care about are all marked with one of these.  */
2110 
      if (ELF32_R_TYPE (irel->r_info) != R_RL78_RH_RELAX)
2111 
        continue;
2112 
 
2113 
      if (irel->r_addend & RL78_RELAXA_ALIGN
2114 
          || next_alignment == internal_relocs)
2115 
        {
2116 
          /* When we delete bytes, we need to maintain all the alignments
2117 
             indicated.  In addition, we need to be careful about relaxing
2118 
             jumps across alignment boundaries - these displacements
2119 
             *grow* when we delete bytes.  For now, don't shrink
2120 
             displacements across an alignment boundary, just in case.
2121 
             Note that this only affects relocations to the same
2122 
             section.  */
2123 
          next_alignment += 2;
2124 
          while (next_alignment < irelend
2125 
                 && (ELF32_R_TYPE (next_alignment->r_info) != R_RL78_RH_RELAX
2126 
                     || !(next_alignment->r_addend & RL78_RELAXA_ELIGN)))
2127 
            next_alignment ++;
2128 
          if (next_alignment >= irelend || next_alignment->r_offset == 0)
2129 
            next_alignment = NULL;
2130 
        }
2131 
 
2132 
      /* When we hit alignment markers, see if we've shrunk enough
2133 
         before them to reduce the gap without violating the alignment
2134 
         requirements.  */
2135 
      if (irel->r_addend & RL78_RELAXA_ALIGN)
2136 
        {
2137 
          /* At this point, the next relocation *should* be the ELIGN
2138 
             end marker.  */
2139 
          Elf_Internal_Rela *erel = irel + 1;
2140 
          unsigned int alignment, nbytes;
2141 
 
2142 
          if (ELF32_R_TYPE (erel->r_info) != R_RL78_RH_RELAX)
2143 
            continue;
2144 
          if (!(erel->r_addend & RL78_RELAXA_ELIGN))
2145 
            continue;
2146 
 
2147 
          alignment = 1 << (irel->r_addend & RL78_RELAXA_ANUM);
2148 
 
2149 
          if (erel->r_offset - irel->r_offset < alignment)
2150 
            continue;
2151 
 
2152 
          nbytes = erel->r_offset - irel->r_offset;
2153 
          nbytes /= alignment;
2154 
          nbytes *= alignment;
2155 
 
2156 
          elf32_rl78_relax_delete_bytes (abfd, sec, erel->r_offset-nbytes, nbytes, next_alignment,
2157 
                                       erel->r_offset == sec->size);
2158 
          *again = TRUE;
2159 
 
2160 
          continue;
2161 
        }
2162 
 
2163 
      if (irel->r_addend & RL78_RELAXA_ELIGN)
2164 
          continue;
2165 
 
2166 
      insn = contents + irel->r_offset;
2167 
 
2168 
      nrelocs = irel->r_addend & RL78_RELAXA_RNUM;
2169 
 
2170 
      /* At this point, we have an insn that is a candidate for linker
2171 
         relaxation.  There are NRELOCS relocs following that may be
2172 
         relaxed, although each reloc may be made of more than one
2173 
         reloc entry (such as gp-rel symbols).  */
2174 
 
2175 
      /* Get the value of the symbol referred to by the reloc.  Just
2176 
         in case this is the last reloc in the list, use the RL's
2177 
         addend to choose between this reloc (no addend) or the next
2178 
         (yes addend, which means at least one following reloc).  */
2179 
 
2180 
      /* srel points to the "current" reloction for this insn -
2181 
         actually the last reloc for a given operand, which is the one
2182 
         we need to update.  We check the relaxations in the same
2183 
         order that the relocations happen, so we'll just push it
2184 
         along as we go.  */
2185 
      srel = irel;
2186 
 
2187 
      pc = sec->output_section->vma + sec->output_offset
2188 
        + srel->r_offset;
2189 
 
2190 
#define GET_RELOC \
2191 
      symval = OFFSET_FOR_RELOC (srel, &srel, &scale); \
2192 
      pcrel = symval - pc + srel->r_addend; \
2193 
      nrelocs --;
2194 
 
2195 
#define SNIPNR(offset, nbytes) \
2196 
        elf32_rl78_relax_delete_bytes (abfd, sec, (insn - contents) + offset, nbytes, next_alignment, 0);
2197 
#define SNIP(offset, nbytes, newtype) \
2198 
        SNIPNR (offset, nbytes);                                                \
2199 
        srel->r_info = ELF32_R_INFO (ELF32_R_SYM (srel->r_info), newtype)
2200 
 
2201 
      /* The order of these bit tests must match the order that the
2202 
         relocs appear in.  Since we sorted those by offset, we can
2203 
         predict them.  */
2204 
 
2205 
      /*----------------------------------------------------------------------*/
2206 
      /* EF ad          BR $rel8        pcrel
2207 
         ED al ah       BR !abs16       abs
2208 
         EE al ah       BR $!rel16      pcrel
2209 
         EC al ah as    BR !!abs20      abs
2210 
 
2211 
         FD al ah       CALL !abs16     abs
2212 
         FE al ah       CALL $!rel16    pcrel
2213 
         FC al ah as    CALL !!abs20    abs
2214 
 
2215 
         DC ad          BC  $rel8
2216 
         DE ad          BNC $rel8
2217 
         DD ad          BZ  $rel8
2218 
         DF ad          BNZ $rel8
2219 
         61 C3 ad       BH  $rel8
2220 
         61 D3 ad       BNH $rel8
2221 
         61 C8 EF ad    SKC  ; BR $rel8
2222 
         61 D8 EF ad    SKNC ; BR $rel8
2223 
         61 E8 EF ad    SKZ  ; BR $rel8
2224 
         61 F8 EF ad    SKNZ ; BR $rel8
2225 
         61 E3 EF ad    SKH  ; BR $rel8
2226 
         61 F3 EF ad    SKNH ; BR $rel8
2227 
       */
2228 
 
2229 
      if (irel->r_addend & RL78_RELAXA_BRA)
2230 
        {
2231 
          GET_RELOC;
2232 
 
2233 
          switch (insn[0])
2234 
            {
2235 
            case 0xec: /* BR !!abs20 */
2236 
 
2237 
              if (pcrel < 127
2238 
                  && pcrel > -127)
2239 
                {
2240 
                  insn[0] = 0xef;
2241 
                  insn[1] = pcrel;
2242 
                  SNIP (2, 2, R_RL78_DIR8S_PCREL);
2243 
                  *again = TRUE;
2244 
                }
2245 
              else if (symval < 65536)
2246 
                {
2247 
                  insn[0] = 0xed;
2248 
                  insn[1] = symval & 0xff;
2249 
                  insn[2] = symval >> 8;
2250 
                  SNIP (2, 1, R_RL78_DIR16S);
2251 
                  *again = TRUE;
2252 
                }
2253 
              else if (pcrel < 32767
2254 
                       && pcrel > -32767)
2255 
                {
2256 
                  insn[0] = 0xee;
2257 
                  insn[1] = pcrel & 0xff;
2258 
                  insn[2] = pcrel >> 8;
2259 
                  SNIP (2, 1, R_RL78_DIR16S_PCREL);
2260 
                  *again = TRUE;
2261 
                }
2262 
              break;
2263 
 
2264 
            case 0xee: /* BR $!pcrel16 */
2265 
            case 0xed: /* BR $!abs16 */
2266 
              if (pcrel < 127
2267 
                  && pcrel > -127)
2268 
                {
2269 
                  insn[0] = 0xef;
2270 
                  insn[1] = pcrel;
2271 
                  SNIP (2, 1, R_RL78_DIR8S_PCREL);
2272 
                  *again = TRUE;
2273 
                }
2274 
              break;
2275 
 
2276 
            case 0xfc: /* CALL !!abs20 */
2277 
              if (symval < 65536)
2278 
                {
2279 
                  insn[0] = 0xfd;
2280 
                  insn[1] = symval & 0xff;
2281 
                  insn[2] = symval >> 8;
2282 
                  SNIP (2, 1, R_RL78_DIR16S);
2283 
                  *again = TRUE;
2284 
                }
2285 
              else if (pcrel < 32767
2286 
                       && pcrel > -32767)
2287 
                {
2288 
                  insn[0] = 0xfe;
2289 
                  insn[1] = pcrel & 0xff;
2290 
                  insn[2] = pcrel >> 8;
2291 
                  SNIP (2, 1, R_RL78_DIR16S_PCREL);
2292 
                  *again = TRUE;
2293 
                }
2294 
              break;
2295 
 
2296 
            case 0x61: /* PREFIX */
2297 
              /* For SKIP/BR, we change the BR opcode and delete the
2298 
                 SKIP.  That way, we don't have to find and change the
2299 
                 relocation for the BR.  */
2300 
              switch (insn[1])
2301 
                {
2302 
                case 0xc8: /* SKC */
2303 
                  if (insn[2] == 0xef)
2304 
                    {
2305 
                      insn[2] = 0xde; /* BNC */
2306 
                      SNIPNR (0, 2);
2307 
                    }
2308 
                  break;
2309 
 
2310 
                case 0xd8: /* SKNC */
2311 
                  if (insn[2] == 0xef)
2312 
                    {
2313 
                      insn[2] = 0xdc; /* BC */
2314 
                      SNIPNR (0, 2);
2315 
                    }
2316 
                  break;
2317 
 
2318 
                case 0xe8: /* SKZ */
2319 
                  if (insn[2] == 0xef)
2320 
                    {
2321 
                      insn[2] = 0xdf; /* BNZ */
2322 
                      SNIPNR (0, 2);
2323 
                    }
2324 
                  break;
2325 
 
2326 
                case 0xf8: /* SKNZ */
2327 
                  if (insn[2] == 0xef)
2328 
                    {
2329 
                      insn[2] = 0xdd; /* BZ */
2330 
                      SNIPNR (0, 2);
2331 
                    }
2332 
                  break;
2333 
 
2334 
                case 0xe3: /* SKH */
2335 
                  if (insn[2] == 0xef)
2336 
                    {
2337 
                      insn[2] = 0xd3; /* BNH */
2338 
                      SNIPNR (1, 1); /* we reuse the 0x61 prefix from the SKH */
2339 
                    }
2340 
                  break;
2341 
 
2342 
                case 0xf3: /* SKNH */
2343 
                  if (insn[2] == 0xef)
2344 
                    {
2345 
                      insn[2] = 0xc3; /* BH */
2346 
                      SNIPNR (1, 1); /* we reuse the 0x61 prefix from the SKH */
2347 
                    }
2348 
                  break;
2349 
                }
2350 
              break;
2351 
            }
2352 
 
2353 
        }
2354 
 
2355 
      if (irel->r_addend & RL78_RELAXA_ADDR16)
2356 
        {
2357 
          /*----------------------------------------------------------------------*/
2358 
          /* Some insns have both a 16-bit address operand and an 8-bit
2359 
             variant if the address is within a special range:
2360 
 
2361 
             Address            16-bit operand  SADDR range     SFR range
2362 
             FFF00-FFFFF        0xff00-0xffff   0x00-0xff
2363 
             FFE20-FFF1F        0xfe20-0xff1f                   0x00-0xff
2364 
 
2365 
             The RELAX_ADDR16[] array has the insn encodings for the
2366 
             16-bit operand version, as well as the SFR and SADDR
2367 
             variants.  We only need to replace the encodings and
2368 
             adjust the operand.
2369 
 
2370 
             Note: we intentionally do not attempt to decode and skip
2371 
             any ES: prefix, as adding ES: means the addr16 (likely)
2372 
             no longer points to saddr/sfr space.
2373 
          */
2374 
 
2375 
          int is_sfr;
2376 
          int is_saddr;
2377 
          int idx;
2378 
          int poff;
2379 
 
2380 
          GET_RELOC;
2381 
 
2382 
          if (0xffe20 <= symval && symval <= 0xfffff)
2383 
            {
2384 
 
2385 
              is_saddr = (0xffe20 <= symval && symval <= 0xfff1f);
2386 
              is_sfr   = (0xfff00 <= symval && symval <= 0xfffff);
2387 
 
2388 
              for (idx = 0; relax_addr16[idx].insn != -1; idx ++)
2389 
                {
2390 
                  if (relax_addr16[idx].prefix != -1
2391 
                      && insn[0] == relax_addr16[idx].prefix
2392 
                      && insn[1] == relax_addr16[idx].insn)
2393 
                    {
2394 
                      poff = 1;
2395 
                    }
2396 
                  else if (relax_addr16[idx].prefix == -1
2397 
                           && insn[0] == relax_addr16[idx].insn)
2398 
                    {
2399 
                      poff = 0;
2400 
                    }
2401 
                  else
2402 
                    continue;
2403 
 
2404 
                  /* We have a matched insn, and poff is 0 or 1 depending
2405 
                     on the base pattern size.  */
2406 
 
2407 
                  if (is_sfr && relax_addr16[idx].insn_for_sfr != -1)
2408 
                    {
2409 
                      insn[poff] = relax_addr16[idx].insn_for_sfr;
2410 
                      SNIP (poff+2, 1, R_RL78_RH_SFR);
2411 
                    }
2412 
 
2413 
                  else if  (is_saddr && relax_addr16[idx].insn_for_saddr != -1)
2414 
                    {
2415 
                      insn[poff] = relax_addr16[idx].insn_for_saddr;
2416 
                      SNIP (poff+2, 1, R_RL78_RH_SADDR);
2417 
                    }
2418 
 
2419 
                }
2420 
            }
2421 
        }
2422 
 
2423 
      /*----------------------------------------------------------------------*/
2424 
 
2425 
    }
2426 
 
2427 163 khays 
  return TRUE;
2428 166 khays 
 
2429 
 error_return:
2430 
  if (free_relocs != NULL)
2431 
    free (free_relocs);
2432 
 
2433 
  if (free_contents != NULL)
2434 
    free (free_contents);
2435 
 
2436 
  if (shndx_buf != NULL)
2437 
    {
2438 
      shndx_hdr->contents = NULL;
2439 
      free (shndx_buf);
2440 
    }
2441 
 
2442 
  if (free_intsyms != NULL)
2443 
    free (free_intsyms);
2444 
 
2445 
  return TRUE;
2446 163 khays 
}
2447 
 
2448 
 
2449 
 
2450 
#define ELF_ARCH                bfd_arch_rl78
2451 
#define ELF_MACHINE_CODE        EM_RL78
2452 
#define ELF_MAXPAGESIZE         0x1000
2453 
 
2454 
#define TARGET_LITTLE_SYM       bfd_elf32_rl78_vec
2455 
#define TARGET_LITTLE_NAME      "elf32-rl78"
2456 
 
2457 
#define elf_info_to_howto_rel                   NULL
2458 
#define elf_info_to_howto                       rl78_info_to_howto_rela
2459 
#define elf_backend_object_p                    rl78_elf_object_p
2460 
#define elf_backend_relocate_section            rl78_elf_relocate_section
2461 
#define elf_symbol_leading_char                 ('_')
2462 
#define elf_backend_can_gc_sections             1
2463 
 
2464 
#define bfd_elf32_bfd_reloc_type_lookup         rl78_reloc_type_lookup
2465 
#define bfd_elf32_bfd_reloc_name_lookup         rl78_reloc_name_lookup
2466 
#define bfd_elf32_bfd_set_private_flags         rl78_elf_set_private_flags
2467 
#define bfd_elf32_bfd_merge_private_bfd_data    rl78_elf_merge_private_bfd_data
2468 
#define bfd_elf32_bfd_print_private_bfd_data    rl78_elf_print_private_bfd_data
2469 
 
2470 
#define bfd_elf32_bfd_relax_section             rl78_elf_relax_section
2471 
#define elf_backend_check_relocs                rl78_elf_check_relocs
2472 
#define elf_backend_always_size_sections \
2473 
  rl78_elf_always_size_sections
2474 
#define elf_backend_finish_dynamic_sections \
2475 
  rl78_elf_finish_dynamic_sections
2476 
 
2477 
#include "elf32-target.h"

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