Regenerate frv-dis.c in order to fix a compile time warning.
[deliverable/binutils-gdb.git] / bfd / coff-h8300.c
CommitLineData
c2dcd04e 1/* BFD back-end for Renesas H8/300 COFF binaries.
7898deda 2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
ca9a79a1 3 2000, 2001, 2002, 2003, 2004
5f771d47 4 Free Software Foundation, Inc.
252b5132
RH
5 Written by Steve Chamberlain, <sac@cygnus.com>.
6
e514ac71 7 This file is part of BFD, the Binary File Descriptor library.
252b5132 8
e514ac71
NC
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
252b5132 13
e514ac71
NC
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
252b5132 18
e514ac71
NC
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
252b5132
RH
22
23#include "bfd.h"
24#include "sysdep.h"
25#include "libbfd.h"
26#include "bfdlink.h"
27#include "genlink.h"
28#include "coff/h8300.h"
29#include "coff/internal.h"
30#include "libcoff.h"
0171ee92 31#include "libiberty.h"
252b5132
RH
32
33#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
34
35/* We derive a hash table from the basic BFD hash table to
5fcfd273 36 hold entries in the function vector. Aside from the
252b5132
RH
37 info stored by the basic hash table, we need the offset
38 of a particular entry within the hash table as well as
39 the offset where we'll add the next entry. */
40
41struct funcvec_hash_entry
f4ffd778
NC
42 {
43 /* The basic hash table entry. */
44 struct bfd_hash_entry root;
252b5132 45
f4ffd778
NC
46 /* The offset within the vectors section where
47 this entry lives. */
48 bfd_vma offset;
49 };
252b5132
RH
50
51struct funcvec_hash_table
f4ffd778
NC
52 {
53 /* The basic hash table. */
54 struct bfd_hash_table root;
252b5132 55
f4ffd778 56 bfd *abfd;
252b5132 57
f4ffd778
NC
58 /* Offset at which we'll add the next entry. */
59 unsigned int offset;
60 };
252b5132
RH
61
62static struct bfd_hash_entry *
63funcvec_hash_newfunc
c6baf75e 64 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
252b5132 65
b34976b6 66static bfd_boolean
252b5132 67funcvec_hash_table_init
c6baf75e
RS
68 (struct funcvec_hash_table *, bfd *,
69 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
70 struct bfd_hash_table *,
71 const char *));
b34976b6
AM
72
73static bfd_reloc_status_type special
c6baf75e 74 (bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **);
b34976b6 75static int select_reloc
c6baf75e 76 (reloc_howto_type *);
b34976b6 77static void rtype2howto
c6baf75e 78 (arelent *, struct internal_reloc *);
b34976b6 79static void reloc_processing
c6baf75e 80 (arelent *, struct internal_reloc *, asymbol **, bfd *, asection *);
b34976b6 81static bfd_boolean h8300_symbol_address_p
c6baf75e 82 (bfd *, asection *, bfd_vma);
b34976b6 83static int h8300_reloc16_estimate
c6baf75e
RS
84 (bfd *, asection *, arelent *, unsigned int,
85 struct bfd_link_info *);
b34976b6 86static void h8300_reloc16_extra_cases
c6baf75e
RS
87 (bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *,
88 bfd_byte *, unsigned int *, unsigned int *);
b34976b6 89static bfd_boolean h8300_bfd_link_add_symbols
c6baf75e 90 (bfd *, struct bfd_link_info *);
f4ffd778 91
252b5132
RH
92/* To lookup a value in the function vector hash table. */
93#define funcvec_hash_lookup(table, string, create, copy) \
94 ((struct funcvec_hash_entry *) \
95 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
96
97/* The derived h8300 COFF linker table. Note it's derived from
98 the generic linker hash table, not the COFF backend linker hash
99 table! We use this to attach additional data structures we
100 need while linking on the h8300. */
bc7eab72 101struct h8300_coff_link_hash_table {
252b5132
RH
102 /* The main hash table. */
103 struct generic_link_hash_table root;
104
105 /* Section for the vectors table. This gets attached to a
106 random input bfd, we keep it here for easy access. */
107 asection *vectors_sec;
108
109 /* Hash table of the functions we need to enter into the function
110 vector. */
111 struct funcvec_hash_table *funcvec_hash_table;
112};
113
c6baf75e 114static struct bfd_link_hash_table *h8300_coff_link_hash_table_create (bfd *);
252b5132
RH
115
116/* Get the H8/300 COFF linker hash table from a link_info structure. */
117
118#define h8300_coff_hash_table(p) \
119 ((struct h8300_coff_link_hash_table *) ((coff_hash_table (p))))
120
121/* Initialize fields within a funcvec hash table entry. Called whenever
122 a new entry is added to the funcvec hash table. */
123
124static struct bfd_hash_entry *
c6baf75e
RS
125funcvec_hash_newfunc (struct bfd_hash_entry *entry,
126 struct bfd_hash_table *gen_table,
127 const char *string)
252b5132
RH
128{
129 struct funcvec_hash_entry *ret;
130 struct funcvec_hash_table *table;
131
132 ret = (struct funcvec_hash_entry *) entry;
133 table = (struct funcvec_hash_table *) gen_table;
134
135 /* Allocate the structure if it has not already been allocated by a
136 subclass. */
137 if (ret == NULL)
138 ret = ((struct funcvec_hash_entry *)
0171ee92
AM
139 bfd_hash_allocate (gen_table,
140 sizeof (struct funcvec_hash_entry)));
252b5132
RH
141 if (ret == NULL)
142 return NULL;
143
144 /* Call the allocation method of the superclass. */
145 ret = ((struct funcvec_hash_entry *)
bc7eab72 146 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, gen_table, string));
252b5132
RH
147
148 if (ret == NULL)
149 return NULL;
150
151 /* Note where this entry will reside in the function vector table. */
152 ret->offset = table->offset;
153
154 /* Bump the offset at which we store entries in the function
155 vector. We'd like to bump up the size of the vectors section,
156 but it's not easily available here. */
d4e2de6b
NC
157 switch (bfd_get_mach (table->abfd))
158 {
159 case bfd_mach_h8300:
160 case bfd_mach_h8300hn:
161 case bfd_mach_h8300sn:
162 table->offset += 2;
163 break;
164 case bfd_mach_h8300h:
165 case bfd_mach_h8300s:
166 table->offset += 4;
167 break;
168 default:
169 return NULL;
170 }
252b5132
RH
171
172 /* Everything went OK. */
173 return (struct bfd_hash_entry *) ret;
174}
175
176/* Initialize the function vector hash table. */
177
b34976b6 178static bfd_boolean
c6baf75e
RS
179funcvec_hash_table_init (struct funcvec_hash_table *table,
180 bfd *abfd,
181 struct bfd_hash_entry *(*newfunc)
182 (struct bfd_hash_entry *,
183 struct bfd_hash_table *,
184 const char *))
252b5132
RH
185{
186 /* Initialize our local fields, then call the generic initialization
187 routine. */
188 table->offset = 0;
189 table->abfd = abfd;
190 return (bfd_hash_table_init (&table->root, newfunc));
191}
192
193/* Create the derived linker hash table. We use a derived hash table
19852a2a 194 basically to hold "static" information during an H8/300 coff link
252b5132
RH
195 without using static variables. */
196
197static struct bfd_link_hash_table *
c6baf75e 198h8300_coff_link_hash_table_create (bfd *abfd)
252b5132
RH
199{
200 struct h8300_coff_link_hash_table *ret;
dc810e39
AM
201 bfd_size_type amt = sizeof (struct h8300_coff_link_hash_table);
202
e2d34d7d 203 ret = (struct h8300_coff_link_hash_table *) bfd_malloc (amt);
252b5132
RH
204 if (ret == NULL)
205 return NULL;
dc810e39
AM
206 if (!_bfd_link_hash_table_init (&ret->root.root, abfd,
207 _bfd_generic_link_hash_newfunc))
252b5132 208 {
e2d34d7d 209 free (ret);
252b5132
RH
210 return NULL;
211 }
212
213 /* Initialize our data. */
214 ret->vectors_sec = NULL;
215 ret->funcvec_hash_table = NULL;
216
2ab1486e 217 /* OK. Everything's initialized, return the base pointer. */
252b5132
RH
218 return &ret->root.root;
219}
220
cc040812 221/* Special handling for H8/300 relocs.
252b5132
RH
222 We only come here for pcrel stuff and return normally if not an -r link.
223 When doing -r, we can't do any arithmetic for the pcrel stuff, because
224 the code in reloc.c assumes that we can manipulate the targets of
5fcfd273 225 the pcrel branches. This isn't so, since the H8/300 can do relaxing,
252b5132 226 which means that the gap after the instruction may not be enough to
d562d2fb 227 contain the offset required for the branch, so we have to use only
cc040812 228 the addend until the final link. */
252b5132
RH
229
230static bfd_reloc_status_type
c6baf75e
RS
231special (bfd *abfd ATTRIBUTE_UNUSED,
232 arelent *reloc_entry ATTRIBUTE_UNUSED,
233 asymbol *symbol ATTRIBUTE_UNUSED,
234 PTR data ATTRIBUTE_UNUSED,
235 asection *input_section ATTRIBUTE_UNUSED,
236 bfd *output_bfd,
237 char **error_message ATTRIBUTE_UNUSED)
252b5132
RH
238{
239 if (output_bfd == (bfd *) NULL)
240 return bfd_reloc_continue;
241
d562d2fb
AM
242 /* Adjust the reloc address to that in the output section. */
243 reloc_entry->address += input_section->output_offset;
252b5132
RH
244 return bfd_reloc_ok;
245}
246
bc7eab72 247static reloc_howto_type howto_table[] = {
b34976b6
AM
248 HOWTO (R_RELBYTE, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, special, "8", FALSE, 0x000000ff, 0x000000ff, FALSE),
249 HOWTO (R_RELWORD, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, special, "16", FALSE, 0x0000ffff, 0x0000ffff, FALSE),
250 HOWTO (R_RELLONG, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, special, "32", FALSE, 0xffffffff, 0xffffffff, FALSE),
251 HOWTO (R_PCRBYTE, 0, 0, 8, TRUE, 0, complain_overflow_signed, special, "DISP8", FALSE, 0x000000ff, 0x000000ff, TRUE),
252 HOWTO (R_PCRWORD, 0, 1, 16, TRUE, 0, complain_overflow_signed, special, "DISP16", FALSE, 0x0000ffff, 0x0000ffff, TRUE),
253 HOWTO (R_PCRLONG, 0, 2, 32, TRUE, 0, complain_overflow_signed, special, "DISP32", FALSE, 0xffffffff, 0xffffffff, TRUE),
254 HOWTO (R_MOV16B1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, special, "relaxable mov.b:16", FALSE, 0x0000ffff, 0x0000ffff, FALSE),
255 HOWTO (R_MOV16B2, 0, 1, 8, FALSE, 0, complain_overflow_bitfield, special, "relaxed mov.b:16", FALSE, 0x000000ff, 0x000000ff, FALSE),
256 HOWTO (R_JMP1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, special, "16/pcrel", FALSE, 0x0000ffff, 0x0000ffff, FALSE),
257 HOWTO (R_JMP2, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, special, "pcrecl/16", FALSE, 0x000000ff, 0x000000ff, FALSE),
258 HOWTO (R_JMPL1, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, special, "24/pcrell", FALSE, 0x00ffffff, 0x00ffffff, FALSE),
259 HOWTO (R_JMPL2, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, special, "pc8/24", FALSE, 0x000000ff, 0x000000ff, FALSE),
260 HOWTO (R_MOV24B1, 0, 1, 32, FALSE, 0, complain_overflow_bitfield, special, "relaxable mov.b:24", FALSE, 0xffffffff, 0xffffffff, FALSE),
261 HOWTO (R_MOV24B2, 0, 1, 8, FALSE, 0, complain_overflow_bitfield, special, "relaxed mov.b:24", FALSE, 0x0000ffff, 0x0000ffff, FALSE),
252b5132
RH
262
263 /* An indirect reference to a function. This causes the function's address
264 to be added to the function vector in lo-mem and puts the address of
265 the function vector's entry in the jsr instruction. */
b34976b6 266 HOWTO (R_MEM_INDIRECT, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, special, "8/indirect", FALSE, 0x000000ff, 0x000000ff, FALSE),
252b5132 267
e804e836
KH
268 /* Internal reloc for relaxing. This is created when a 16-bit pc-relative
269 branch is turned into an 8-bit pc-relative branch. */
b34976b6 270 HOWTO (R_PCRWORD_B, 0, 0, 8, TRUE, 0, complain_overflow_bitfield, special, "relaxed bCC:16", FALSE, 0x000000ff, 0x000000ff, FALSE),
252b5132 271
b34976b6 272 HOWTO (R_MOVL1, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,special, "32/24 relaxable move", FALSE, 0xffffffff, 0xffffffff, FALSE),
252b5132 273
b34976b6 274 HOWTO (R_MOVL2, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, special, "32/24 relaxed move", FALSE, 0x0000ffff, 0x0000ffff, FALSE),
252b5132 275
b34976b6 276 HOWTO (R_BCC_INV, 0, 0, 8, TRUE, 0, complain_overflow_signed, special, "DISP8 inverted", FALSE, 0x000000ff, 0x000000ff, TRUE),
252b5132 277
b34976b6 278 HOWTO (R_JMP_DEL, 0, 0, 8, TRUE, 0, complain_overflow_signed, special, "Deleted jump", FALSE, 0x000000ff, 0x000000ff, TRUE),
252b5132
RH
279};
280
cc040812 281/* Turn a howto into a reloc number. */
252b5132
RH
282
283#define SELECT_RELOC(x,howto) \
bc7eab72 284 { x.r_type = select_reloc (howto); }
252b5132 285
8d9cd6b1
NC
286#define BADMAG(x) (H8300BADMAG (x) && H8300HBADMAG (x) && H8300SBADMAG (x) \
287 && H8300HNBADMAG(x) && H8300SNBADMAG(x))
288#define H8300 1 /* Customize coffcode.h */
252b5132
RH
289#define __A_MAGIC_SET__
290
cc040812 291/* Code to swap in the reloc. */
dc810e39
AM
292#define SWAP_IN_RELOC_OFFSET H_GET_32
293#define SWAP_OUT_RELOC_OFFSET H_PUT_32
252b5132
RH
294#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
295 dst->r_stuff[0] = 'S'; \
296 dst->r_stuff[1] = 'C';
297
252b5132 298static int
c6baf75e 299select_reloc (reloc_howto_type *howto)
252b5132
RH
300{
301 return howto->type;
302}
303
cc040812 304/* Code to turn a r_type into a howto ptr, uses the above howto table. */
252b5132
RH
305
306static void
c6baf75e 307rtype2howto (arelent *internal, struct internal_reloc *dst)
252b5132
RH
308{
309 switch (dst->r_type)
310 {
311 case R_RELBYTE:
312 internal->howto = howto_table + 0;
313 break;
314 case R_RELWORD:
315 internal->howto = howto_table + 1;
316 break;
317 case R_RELLONG:
318 internal->howto = howto_table + 2;
319 break;
320 case R_PCRBYTE:
321 internal->howto = howto_table + 3;
322 break;
323 case R_PCRWORD:
324 internal->howto = howto_table + 4;
325 break;
326 case R_PCRLONG:
327 internal->howto = howto_table + 5;
328 break;
329 case R_MOV16B1:
330 internal->howto = howto_table + 6;
331 break;
332 case R_MOV16B2:
333 internal->howto = howto_table + 7;
334 break;
335 case R_JMP1:
336 internal->howto = howto_table + 8;
337 break;
338 case R_JMP2:
339 internal->howto = howto_table + 9;
340 break;
341 case R_JMPL1:
342 internal->howto = howto_table + 10;
343 break;
344 case R_JMPL2:
345 internal->howto = howto_table + 11;
346 break;
347 case R_MOV24B1:
348 internal->howto = howto_table + 12;
349 break;
350 case R_MOV24B2:
351 internal->howto = howto_table + 13;
352 break;
353 case R_MEM_INDIRECT:
354 internal->howto = howto_table + 14;
355 break;
356 case R_PCRWORD_B:
357 internal->howto = howto_table + 15;
358 break;
359 case R_MOVL1:
360 internal->howto = howto_table + 16;
361 break;
362 case R_MOVL2:
363 internal->howto = howto_table + 17;
364 break;
365 case R_BCC_INV:
366 internal->howto = howto_table + 18;
367 break;
368 case R_JMP_DEL:
369 internal->howto = howto_table + 19;
370 break;
371 default:
372 abort ();
373 break;
374 }
375}
376
bc7eab72 377#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
252b5132 378
cc040812 379/* Perform any necessary magic to the addend in a reloc entry. */
252b5132
RH
380
381#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
bc7eab72 382 cache_ptr->addend = ext_reloc.r_offset;
252b5132 383
252b5132 384#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
bc7eab72 385 reloc_processing (relent, reloc, symbols, abfd, section)
252b5132
RH
386
387static void
c6baf75e
RS
388reloc_processing (arelent *relent, struct internal_reloc *reloc,
389 asymbol **symbols, bfd *abfd, asection *section)
252b5132
RH
390{
391 relent->address = reloc->r_vaddr;
392 rtype2howto (relent, reloc);
393
394 if (((int) reloc->r_symndx) > 0)
2ab1486e 395 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
252b5132 396 else
2ab1486e 397 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
252b5132 398
252b5132 399 relent->addend = reloc->r_offset;
252b5132 400 relent->address -= section->vma;
252b5132
RH
401}
402
b34976b6 403static bfd_boolean
c6baf75e 404h8300_symbol_address_p (bfd *abfd, asection *input_section, bfd_vma address)
252b5132
RH
405{
406 asymbol **s;
407
408 s = _bfd_generic_link_get_symbols (abfd);
409 BFD_ASSERT (s != (asymbol **) NULL);
410
411 /* Search all the symbols for one in INPUT_SECTION with
412 address ADDRESS. */
cc040812 413 while (*s)
252b5132
RH
414 {
415 asymbol *p = *s;
2ab1486e 416
252b5132
RH
417 if (p->section == input_section
418 && (input_section->output_section->vma
419 + input_section->output_offset
420 + p->value) == address)
b34976b6 421 return TRUE;
252b5132 422 s++;
cc040812 423 }
b34976b6 424 return FALSE;
252b5132
RH
425}
426
252b5132
RH
427/* If RELOC represents a relaxable instruction/reloc, change it into
428 the relaxed reloc, notify the linker that symbol addresses
429 have changed (bfd_perform_slip) and return how much the current
430 section has shrunk by.
431
432 FIXME: Much of this code has knowledge of the ordering of entries
433 in the howto table. This needs to be fixed. */
434
435static int
c6baf75e
RS
436h8300_reloc16_estimate (bfd *abfd, asection *input_section, arelent *reloc,
437 unsigned int shrink, struct bfd_link_info *link_info)
252b5132 438{
cc040812 439 bfd_vma value;
252b5132
RH
440 bfd_vma dot;
441 bfd_vma gap;
442 static asection *last_input_section = NULL;
443 static arelent *last_reloc = NULL;
444
5fcfd273 445 /* The address of the thing to be relocated will have moved back by
252b5132
RH
446 the size of the shrink - but we don't change reloc->address here,
447 since we need it to know where the relocation lives in the source
448 uncooked section. */
449 bfd_vma address = reloc->address - shrink;
450
451 if (input_section != last_input_section)
452 last_reloc = NULL;
453
454 /* Only examine the relocs which might be relaxable. */
455 switch (reloc->howto->type)
5fcfd273 456 {
e804e836
KH
457 /* This is the 16-/24-bit absolute branch which could become an
458 8-bit pc-relative branch. */
252b5132
RH
459 case R_JMP1:
460 case R_JMPL1:
461 /* Get the address of the target of this branch. */
cc040812 462 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
252b5132
RH
463
464 /* Get the address of the next instruction (not the reloc). */
465 dot = (input_section->output_section->vma
466 + input_section->output_offset + address);
467
468 /* Adjust for R_JMP1 vs R_JMPL1. */
469 dot += (reloc->howto->type == R_JMP1 ? 1 : 2);
470
471 /* Compute the distance from this insn to the branch target. */
472 gap = value - dot;
cc040812 473
252b5132
RH
474 /* If the distance is within -128..+128 inclusive, then we can relax
475 this jump. +128 is valid since the target will move two bytes
476 closer if we do relax this branch. */
bc7eab72 477 if ((int) gap >= -128 && (int) gap <= 128)
5fcfd273 478 {
e514ac71
NC
479 bfd_byte code;
480
481 if (!bfd_get_section_contents (abfd, input_section, & code,
482 reloc->address, 1))
483 break;
484 code = bfd_get_8 (abfd, & code);
485
252b5132
RH
486 /* It's possible we may be able to eliminate this branch entirely;
487 if the previous instruction is a branch around this instruction,
488 and there's no label at this instruction, then we can reverse
489 the condition on the previous branch and eliminate this jump.
490
491 original: new:
492 bCC lab1 bCC' lab2
493 jmp lab2
494 lab1: lab1:
5fcfd273 495
252b5132 496 This saves 4 bytes instead of two, and should be relatively
e514ac71
NC
497 common.
498
499 Only perform this optimisation for jumps (code 0x5a) not
500 subroutine calls, as otherwise it could transform:
b34976b6 501
0171ee92
AM
502 mov.w r0,r0
503 beq .L1
504 jsr @_bar
505 .L1: rts
506 _bar: rts
e514ac71 507 into:
0171ee92
AM
508 mov.w r0,r0
509 bne _bar
510 rts
511 _bar: rts
b34976b6 512
e514ac71
NC
513 which changes the call (jsr) into a branch (bne). */
514 if (code == 0x5a
515 && gap <= 126
252b5132
RH
516 && last_reloc
517 && last_reloc->howto->type == R_PCRBYTE)
518 {
519 bfd_vma last_value;
520 last_value = bfd_coff_reloc16_get_value (last_reloc, link_info,
521 input_section) + 1;
522
523 if (last_value == dot + 2
524 && last_reloc->address + 1 == reloc->address
cc040812 525 && !h8300_symbol_address_p (abfd, input_section, dot - 2))
252b5132
RH
526 {
527 reloc->howto = howto_table + 19;
528 last_reloc->howto = howto_table + 18;
529 last_reloc->sym_ptr_ptr = reloc->sym_ptr_ptr;
530 last_reloc->addend = reloc->addend;
531 shrink += 4;
532 bfd_perform_slip (abfd, 4, input_section, address);
533 break;
534 }
535 }
536
537 /* Change the reloc type. */
cc040812 538 reloc->howto = reloc->howto + 1;
252b5132
RH
539
540 /* This shrinks this section by two bytes. */
541 shrink += 2;
cc040812 542 bfd_perform_slip (abfd, 2, input_section, address);
252b5132
RH
543 }
544 break;
545
e804e836 546 /* This is the 16-bit pc-relative branch which could become an 8-bit
252b5132
RH
547 pc-relative branch. */
548 case R_PCRWORD:
549 /* Get the address of the target of this branch, add one to the value
0171ee92 550 because the addend field in PCrel jumps is off by -1. */
cc040812
NC
551 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section) + 1;
552
252b5132
RH
553 /* Get the address of the next instruction if we were to relax. */
554 dot = input_section->output_section->vma +
555 input_section->output_offset + address;
cc040812 556
252b5132
RH
557 /* Compute the distance from this insn to the branch target. */
558 gap = value - dot;
559
560 /* If the distance is within -128..+128 inclusive, then we can relax
561 this jump. +128 is valid since the target will move two bytes
562 closer if we do relax this branch. */
bc7eab72 563 if ((int) gap >= -128 && (int) gap <= 128)
5fcfd273 564 {
252b5132
RH
565 /* Change the reloc type. */
566 reloc->howto = howto_table + 15;
567
568 /* This shrinks this section by two bytes. */
569 shrink += 2;
cc040812 570 bfd_perform_slip (abfd, 2, input_section, address);
252b5132
RH
571 }
572 break;
573
e804e836
KH
574 /* This is a 16-bit absolute address in a mov.b insn, which can
575 become an 8-bit absolute address if it's in the right range. */
252b5132
RH
576 case R_MOV16B1:
577 /* Get the address of the data referenced by this mov.b insn. */
cc040812 578 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
7a9823f1 579 value = bfd_h8300_pad_address (abfd, value);
252b5132 580
7a9823f1
RS
581 /* If the address is in the top 256 bytes of the address space
582 then we can relax this instruction. */
583 if (value >= 0xffffff00u)
252b5132
RH
584 {
585 /* Change the reloc type. */
586 reloc->howto = reloc->howto + 1;
587
588 /* This shrinks this section by two bytes. */
589 shrink += 2;
cc040812 590 bfd_perform_slip (abfd, 2, input_section, address);
252b5132
RH
591 }
592 break;
593
e804e836
KH
594 /* Similarly for a 24-bit absolute address in a mov.b. Note that
595 if we can't relax this into an 8-bit absolute, we'll fall through
596 and try to relax it into a 16-bit absolute. */
252b5132
RH
597 case R_MOV24B1:
598 /* Get the address of the data referenced by this mov.b insn. */
cc040812 599 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
7a9823f1 600 value = bfd_h8300_pad_address (abfd, value);
252b5132 601
7a9823f1 602 if (value >= 0xffffff00u)
252b5132
RH
603 {
604 /* Change the reloc type. */
605 reloc->howto = reloc->howto + 1;
606
607 /* This shrinks this section by four bytes. */
608 shrink += 4;
cc040812 609 bfd_perform_slip (abfd, 4, input_section, address);
252b5132
RH
610
611 /* Done with this reloc. */
612 break;
613 }
614
e804e836 615 /* FALLTHROUGH and try to turn the 24-/32-bit reloc into a 16-bit
252b5132
RH
616 reloc. */
617
e804e836
KH
618 /* This is a 24-/32-bit absolute address in a mov insn, which can
619 become an 16-bit absolute address if it's in the right range. */
252b5132
RH
620 case R_MOVL1:
621 /* Get the address of the data referenced by this mov insn. */
cc040812 622 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
7a9823f1 623 value = bfd_h8300_pad_address (abfd, value);
252b5132 624
7a9823f1
RS
625 /* If the address is a sign-extended 16-bit value then we can
626 relax this instruction. */
627 if (value <= 0x7fff || value >= 0xffff8000u)
252b5132
RH
628 {
629 /* Change the reloc type. */
630 reloc->howto = howto_table + 17;
631
632 /* This shrinks this section by two bytes. */
633 shrink += 2;
cc040812 634 bfd_perform_slip (abfd, 2, input_section, address);
252b5132
RH
635 }
636 break;
637
638 /* No other reloc types represent relaxing opportunities. */
cc040812
NC
639 default:
640 break;
252b5132
RH
641 }
642
643 last_reloc = reloc;
644 last_input_section = input_section;
645 return shrink;
646}
647
252b5132
RH
648/* Handle relocations for the H8/300, including relocs for relaxed
649 instructions.
650
651 FIXME: Not all relocations check for overflow! */
652
653static void
c6baf75e
RS
654h8300_reloc16_extra_cases (bfd *abfd, struct bfd_link_info *link_info,
655 struct bfd_link_order *link_order, arelent *reloc,
656 bfd_byte *data, unsigned int *src_ptr,
657 unsigned int *dst_ptr)
252b5132
RH
658{
659 unsigned int src_address = *src_ptr;
660 unsigned int dst_address = *dst_ptr;
661 asection *input_section = link_order->u.indirect.section;
662 bfd_vma value;
663 bfd_vma dot;
cc040812 664 int gap, tmp;
ca9a79a1 665 unsigned char temp_code;
252b5132
RH
666
667 switch (reloc->howto->type)
668 {
e804e836 669 /* Generic 8-bit pc-relative relocation. */
252b5132
RH
670 case R_PCRBYTE:
671 /* Get the address of the target of this branch. */
cc040812 672 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
252b5132 673
cc040812
NC
674 dot = (link_order->offset
675 + dst_address
252b5132
RH
676 + link_order->u.indirect.section->output_section->vma);
677
678 gap = value - dot;
679
680 /* Sanity check. */
681 if (gap < -128 || gap > 126)
682 {
683 if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f
L
684 (link_info, NULL,
685 bfd_asymbol_name (*reloc->sym_ptr_ptr),
252b5132
RH
686 reloc->howto->name, reloc->addend, input_section->owner,
687 input_section, reloc->address)))
688 abort ();
689 }
690
691 /* Everything looks OK. Apply the relocation and update the
692 src/dst address appropriately. */
252b5132
RH
693 bfd_put_8 (abfd, gap, data + dst_address);
694 dst_address++;
695 src_address++;
696
697 /* All done. */
698 break;
699
e804e836 700 /* Generic 16-bit pc-relative relocation. */
252b5132
RH
701 case R_PCRWORD:
702 /* Get the address of the target of this branch. */
cc040812 703 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
252b5132
RH
704
705 /* Get the address of the instruction (not the reloc). */
5fcfd273
KH
706 dot = (link_order->offset
707 + dst_address
252b5132
RH
708 + link_order->u.indirect.section->output_section->vma + 1);
709
710 gap = value - dot;
711
712 /* Sanity check. */
713 if (gap > 32766 || gap < -32768)
714 {
715 if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f
L
716 (link_info, NULL,
717 bfd_asymbol_name (*reloc->sym_ptr_ptr),
252b5132
RH
718 reloc->howto->name, reloc->addend, input_section->owner,
719 input_section, reloc->address)))
720 abort ();
721 }
722
723 /* Everything looks OK. Apply the relocation and update the
724 src/dst address appropriately. */
dc810e39 725 bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
252b5132
RH
726 dst_address += 2;
727 src_address += 2;
728
729 /* All done. */
730 break;
731
e804e836 732 /* Generic 8-bit absolute relocation. */
252b5132
RH
733 case R_RELBYTE:
734 /* Get the address of the object referenced by this insn. */
735 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
736
7a9823f1
RS
737 bfd_put_8 (abfd, value & 0xff, data + dst_address);
738 dst_address += 1;
739 src_address += 1;
252b5132
RH
740
741 /* All done. */
742 break;
743
e804e836 744 /* Various simple 16-bit absolute relocations. */
252b5132
RH
745 case R_MOV16B1:
746 case R_JMP1:
747 case R_RELWORD:
cc040812 748 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
252b5132
RH
749 bfd_put_16 (abfd, value, data + dst_address);
750 dst_address += 2;
751 src_address += 2;
752 break;
753
e804e836 754 /* Various simple 24-/32-bit absolute relocations. */
252b5132
RH
755 case R_MOV24B1:
756 case R_MOVL1:
757 case R_RELLONG:
758 /* Get the address of the target of this branch. */
cc040812 759 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
252b5132
RH
760 bfd_put_32 (abfd, value, data + dst_address);
761 dst_address += 4;
762 src_address += 4;
763 break;
764
e804e836 765 /* Another 24-/32-bit absolute relocation. */
252b5132
RH
766 case R_JMPL1:
767 /* Get the address of the target of this branch. */
768 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
769
770 value = ((value & 0x00ffffff)
771 | (bfd_get_32 (abfd, data + src_address) & 0xff000000));
772 bfd_put_32 (abfd, value, data + dst_address);
773 dst_address += 4;
774 src_address += 4;
775 break;
776
7e89635a
KH
777 /* This is a 24-/32-bit absolute address in one of the following
778 instructions:
779
780 "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
3255318a
NC
781 "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", "ldc.w",
782 "stc.w" and "mov.[bwl]"
7e89635a
KH
783
784 We may relax this into an 16-bit absolute address if it's in
785 the right range. */
252b5132
RH
786 case R_MOVL2:
787 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
7a9823f1 788 value = bfd_h8300_pad_address (abfd, value);
252b5132
RH
789
790 /* Sanity check. */
7a9823f1 791 if (value <= 0x7fff || value >= 0xffff8000u)
252b5132 792 {
e804e836 793 /* Insert the 16-bit value into the proper location. */
252b5132
RH
794 bfd_put_16 (abfd, value, data + dst_address);
795
7e89635a
KH
796 /* Fix the opcode. For all the instructions that belong to
797 this relaxation, we simply need to turn off bit 0x20 in
798 the previous byte. */
bc7eab72 799 data[dst_address - 1] &= ~0x20;
252b5132
RH
800 dst_address += 2;
801 src_address += 4;
802 }
803 else
804 {
805 if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f
L
806 (link_info, NULL,
807 bfd_asymbol_name (*reloc->sym_ptr_ptr),
252b5132
RH
808 reloc->howto->name, reloc->addend, input_section->owner,
809 input_section, reloc->address)))
810 abort ();
bc7eab72 811 }
252b5132
RH
812 break;
813
e804e836 814 /* A 16-bit absolute branch that is now an 8-bit pc-relative branch. */
252b5132
RH
815 case R_JMP2:
816 /* Get the address of the target of this branch. */
817 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
818
819 /* Get the address of the next instruction. */
820 dot = (link_order->offset
821 + dst_address
822 + link_order->u.indirect.section->output_section->vma + 1);
823
824 gap = value - dot;
825
826 /* Sanity check. */
827 if (gap < -128 || gap > 126)
828 {
829 if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f
L
830 (link_info, NULL,
831 bfd_asymbol_name (*reloc->sym_ptr_ptr),
252b5132
RH
832 reloc->howto->name, reloc->addend, input_section->owner,
833 input_section, reloc->address)))
834 abort ();
835 }
836
837 /* Now fix the instruction itself. */
838 switch (data[dst_address - 1])
839 {
840 case 0x5e:
841 /* jsr -> bsr */
842 bfd_put_8 (abfd, 0x55, data + dst_address - 1);
843 break;
844 case 0x5a:
7e89635a 845 /* jmp -> bra */
252b5132
RH
846 bfd_put_8 (abfd, 0x40, data + dst_address - 1);
847 break;
848
849 default:
850 abort ();
851 }
852
e804e836 853 /* Write out the 8-bit value. */
252b5132
RH
854 bfd_put_8 (abfd, gap, data + dst_address);
855
856 dst_address += 1;
857 src_address += 3;
858
859 break;
860
e804e836 861 /* A 16-bit pc-relative branch that is now an 8-bit pc-relative branch. */
252b5132
RH
862 case R_PCRWORD_B:
863 /* Get the address of the target of this branch. */
864 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
865
866 /* Get the address of the instruction (not the reloc). */
867 dot = (link_order->offset
868 + dst_address
869 + link_order->u.indirect.section->output_section->vma - 1);
870
871 gap = value - dot;
872
873 /* Sanity check. */
874 if (gap < -128 || gap > 126)
875 {
876 if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f
L
877 (link_info, NULL,
878 bfd_asymbol_name (*reloc->sym_ptr_ptr),
252b5132
RH
879 reloc->howto->name, reloc->addend, input_section->owner,
880 input_section, reloc->address)))
881 abort ();
882 }
883
884 /* Now fix the instruction. */
885 switch (data[dst_address - 2])
886 {
887 case 0x58:
888 /* bCC:16 -> bCC:8 */
7e89635a
KH
889 /* Get the second byte of the original insn, which contains
890 the condition code. */
252b5132 891 tmp = data[dst_address - 1];
7e89635a
KH
892
893 /* Compute the fisrt byte of the relaxed instruction. The
894 original sequence 0x58 0xX0 is relaxed to 0x4X, where X
895 represents the condition code. */
252b5132
RH
896 tmp &= 0xf0;
897 tmp >>= 4;
252b5132
RH
898 tmp |= 0x40;
899
900 /* Write it. */
901 bfd_put_8 (abfd, tmp, data + dst_address - 2);
902 break;
d562d2fb 903
4259e8b6
JL
904 case 0x5c:
905 /* bsr:16 -> bsr:8 */
906 bfd_put_8 (abfd, 0x55, data + dst_address - 2);
907 break;
252b5132
RH
908
909 default:
910 abort ();
911 }
912
bc7eab72
KH
913 /* Output the target. */
914 bfd_put_8 (abfd, gap, data + dst_address - 1);
252b5132 915
e804e836 916 /* We don't advance dst_address -- the 8-bit reloc is applied at
bc7eab72
KH
917 dst_address - 1, so the next insn should begin at dst_address. */
918 src_address += 2;
252b5132 919
bc7eab72 920 break;
5fcfd273 921
e804e836 922 /* Similarly for a 24-bit absolute that is now 8 bits. */
252b5132
RH
923 case R_JMPL2:
924 /* Get the address of the target of this branch. */
925 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
926
927 /* Get the address of the instruction (not the reloc). */
928 dot = (link_order->offset
929 + dst_address
930 + link_order->u.indirect.section->output_section->vma + 2);
931
932 gap = value - dot;
933
934 /* Fix the instruction. */
935 switch (data[src_address])
936 {
937 case 0x5e:
938 /* jsr -> bsr */
939 bfd_put_8 (abfd, 0x55, data + dst_address);
940 break;
941 case 0x5a:
942 /* jmp ->bra */
943 bfd_put_8 (abfd, 0x40, data + dst_address);
944 break;
945 default:
946 abort ();
947 }
948
949 bfd_put_8 (abfd, gap, data + dst_address + 1);
950 dst_address += 2;
951 src_address += 4;
952
953 break;
954
630a7b0a
KH
955 /* This is a 16-bit absolute address in one of the following
956 instructions:
957
958 "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
959 "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
960 "mov.b"
961
962 We may relax this into an 8-bit absolute address if it's in
963 the right range. */
252b5132
RH
964 case R_MOV16B2:
965 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
966
630a7b0a 967 /* All instructions with R_H8_DIR16B2 start with 0x6a. */
252b5132
RH
968 if (data[dst_address - 2] != 0x6a)
969 abort ();
970
ca9a79a1 971 temp_code = data[src_address - 1];
630a7b0a
KH
972
973 /* If this is a mov.b instruction, clear the lower nibble, which
974 contains the source/destination register number. */
ca9a79a1
NC
975 if ((temp_code & 0x10) != 0x10)
976 temp_code &= 0xf0;
977
252b5132 978 /* Fix up the opcode. */
ca9a79a1 979 switch (temp_code)
252b5132
RH
980 {
981 case 0x00:
630a7b0a 982 /* This is mov.b @aa:16,Rd. */
cc040812 983 data[dst_address - 2] = (data[src_address - 1] & 0xf) | 0x20;
252b5132
RH
984 break;
985 case 0x80:
630a7b0a 986 /* This is mov.b Rs,@aa:16. */
cc040812 987 data[dst_address - 2] = (data[src_address - 1] & 0xf) | 0x30;
252b5132 988 break;
ca9a79a1 989 case 0x18:
630a7b0a
KH
990 /* This is a bit-maniputation instruction that stores one
991 bit into memory, one of "bclr", "bist", "bnot", "bset",
992 and "bst". */
ca9a79a1
NC
993 data[dst_address - 2] = 0x7f;
994 break;
995 case 0x10:
630a7b0a
KH
996 /* This is a bit-maniputation instruction that loads one bit
997 from memory, one of "band", "biand", "bild", "bior",
998 "bixor", "bld", "bor", "btst", and "bxor". */
ca9a79a1
NC
999 data[dst_address - 2] = 0x7e;
1000 break;
252b5132
RH
1001 default:
1002 abort ();
1003 }
1004
1005 bfd_put_8 (abfd, value & 0xff, data + dst_address - 1);
1006 src_address += 2;
1007 break;
1008
630a7b0a
KH
1009 /* This is a 24-bit absolute address in one of the following
1010 instructions:
1011
1012 "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
1013 "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
1014 "mov.b"
1015
1016 We may relax this into an 8-bit absolute address if it's in
1017 the right range. */
252b5132
RH
1018 case R_MOV24B2:
1019 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
1020
630a7b0a 1021 /* All instructions with R_MOV24B2 start with 0x6a. */
252b5132
RH
1022 if (data[dst_address - 2] != 0x6a)
1023 abort ();
1024
ca9a79a1 1025 temp_code = data[src_address - 1];
630a7b0a
KH
1026
1027 /* If this is a mov.b instruction, clear the lower nibble, which
1028 contains the source/destination register number. */
ca9a79a1
NC
1029 if ((temp_code & 0x30) != 0x30)
1030 temp_code &= 0xf0;
1031
252b5132 1032 /* Fix up the opcode. */
ca9a79a1 1033 switch (temp_code)
252b5132
RH
1034 {
1035 case 0x20:
630a7b0a 1036 /* This is mov.b @aa:24/32,Rd. */
cc040812 1037 data[dst_address - 2] = (data[src_address - 1] & 0xf) | 0x20;
252b5132
RH
1038 break;
1039 case 0xa0:
630a7b0a 1040 /* This is mov.b Rs,@aa:24/32. */
cc040812 1041 data[dst_address - 2] = (data[src_address - 1] & 0xf) | 0x30;
252b5132 1042 break;
ca9a79a1 1043 case 0x38:
630a7b0a
KH
1044 /* This is a bit-maniputation instruction that stores one
1045 bit into memory, one of "bclr", "bist", "bnot", "bset",
1046 and "bst". */
ca9a79a1
NC
1047 data[dst_address - 2] = 0x7f;
1048 break;
1049 case 0x30:
630a7b0a
KH
1050 /* This is a bit-maniputation instruction that loads one bit
1051 from memory, one of "band", "biand", "bild", "bior",
1052 "bixor", "bld", "bor", "btst", and "bxor". */
ca9a79a1
NC
1053 data[dst_address - 2] = 0x7e;
1054 break;
252b5132
RH
1055 default:
1056 abort ();
1057 }
1058
1059 bfd_put_8 (abfd, value & 0xff, data + dst_address - 1);
1060 src_address += 4;
1061 break;
1062
1063 case R_BCC_INV:
1064 /* Get the address of the target of this branch. */
cc040812 1065 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
252b5132 1066
cc040812
NC
1067 dot = (link_order->offset
1068 + dst_address
252b5132
RH
1069 + link_order->u.indirect.section->output_section->vma) + 1;
1070
1071 gap = value - dot;
1072
1073 /* Sanity check. */
1074 if (gap < -128 || gap > 126)
1075 {
1076 if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f
L
1077 (link_info, NULL,
1078 bfd_asymbol_name (*reloc->sym_ptr_ptr),
252b5132
RH
1079 reloc->howto->name, reloc->addend, input_section->owner,
1080 input_section, reloc->address)))
1081 abort ();
1082 }
1083
1084 /* Everything looks OK. Fix the condition in the instruction, apply
1085 the relocation, and update the src/dst address appropriately. */
1086
1087 bfd_put_8 (abfd, bfd_get_8 (abfd, data + dst_address - 1) ^ 1,
1088 data + dst_address - 1);
1089 bfd_put_8 (abfd, gap, data + dst_address);
1090 dst_address++;
1091 src_address++;
1092
1093 /* All done. */
1094 break;
1095
1096 case R_JMP_DEL:
1097 src_address += 4;
1098 break;
1099
e804e836 1100 /* An 8-bit memory indirect instruction (jmp/jsr).
252b5132
RH
1101
1102 There's several things that need to be done to handle
1103 this relocation.
1104
1105 If this is a reloc against the absolute symbol, then
1106 we should handle it just R_RELBYTE. Likewise if it's
1107 for a symbol with a value ge 0 and le 0xff.
1108
1109 Otherwise it's a jump/call through the function vector,
1110 and the linker is expected to set up the function vector
1111 and put the right value into the jump/call instruction. */
1112 case R_MEM_INDIRECT:
1113 {
1114 /* We need to find the symbol so we can determine it's
1115 address in the function vector table. */
1116 asymbol *symbol;
252b5132 1117 const char *name;
dc810e39 1118 struct funcvec_hash_table *ftab;
252b5132 1119 struct funcvec_hash_entry *h;
0171ee92
AM
1120 struct h8300_coff_link_hash_table *htab;
1121 asection *vectors_sec;
1122
1123 if (link_info->hash->creator != abfd->xvec)
1124 {
1125 (*_bfd_error_handler)
1126 (_("cannot handle R_MEM_INDIRECT reloc when using %s output"),
1127 link_info->hash->creator->name);
1128
1129 /* What else can we do? This function doesn't allow return
1130 of an error, and we don't want to call abort as that
1131 indicates an internal error. */
1132#ifndef EXIT_FAILURE
1133#define EXIT_FAILURE 1
1134#endif
1135 xexit (EXIT_FAILURE);
1136 }
1137 htab = h8300_coff_hash_table (link_info);
1138 vectors_sec = htab->vectors_sec;
252b5132
RH
1139
1140 /* First see if this is a reloc against the absolute symbol
1141 or against a symbol with a nonnegative value <= 0xff. */
1142 symbol = *(reloc->sym_ptr_ptr);
1143 value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
1144 if (symbol == bfd_abs_section_ptr->symbol
5f771d47 1145 || value <= 0xff)
252b5132
RH
1146 {
1147 /* This should be handled in a manner very similar to
1148 R_RELBYTES. If the value is in range, then just slam
1149 the value into the right location. Else trigger a
1150 reloc overflow callback. */
5f771d47 1151 if (value <= 0xff)
252b5132
RH
1152 {
1153 bfd_put_8 (abfd, value, data + dst_address);
1154 dst_address += 1;
1155 src_address += 1;
1156 }
1157 else
1158 {
1159 if (! ((*link_info->callbacks->reloc_overflow)
dfeffb9f
L
1160 (link_info, NULL,
1161 bfd_asymbol_name (*reloc->sym_ptr_ptr),
252b5132
RH
1162 reloc->howto->name, reloc->addend, input_section->owner,
1163 input_section, reloc->address)))
1164 abort ();
1165 }
1166 break;
1167 }
1168
1169 /* This is a jump/call through a function vector, and we're
5fcfd273 1170 expected to create the function vector ourselves.
252b5132
RH
1171
1172 First look up this symbol in the linker hash table -- we need
1173 the derived linker symbol which holds this symbol's index
1174 in the function vector. */
1175 name = symbol->name;
1176 if (symbol->flags & BSF_LOCAL)
1177 {
dc810e39 1178 char *new_name = bfd_malloc ((bfd_size_type) strlen (name) + 9);
d4e2de6b 1179
252b5132
RH
1180 if (new_name == NULL)
1181 abort ();
1182
1183 strcpy (new_name, name);
1184 sprintf (new_name + strlen (name), "_%08x",
cc040812 1185 (int) symbol->section);
252b5132
RH
1186 name = new_name;
1187 }
1188
0171ee92 1189 ftab = htab->funcvec_hash_table;
b34976b6 1190 h = funcvec_hash_lookup (ftab, name, FALSE, FALSE);
252b5132
RH
1191
1192 /* This shouldn't ever happen. If it does that means we've got
1193 data corruption of some kind. Aborting seems like a reasonable
0171ee92 1194 thing to do here. */
252b5132
RH
1195 if (h == NULL || vectors_sec == NULL)
1196 abort ();
1197
1198 /* Place the address of the function vector entry into the
1199 reloc's address. */
1200 bfd_put_8 (abfd,
1201 vectors_sec->output_offset + h->offset,
1202 data + dst_address);
1203
1204 dst_address++;
1205 src_address++;
1206
1207 /* Now create an entry in the function vector itself. */
d4e2de6b
NC
1208 switch (bfd_get_mach (input_section->owner))
1209 {
1210 case bfd_mach_h8300:
1211 case bfd_mach_h8300hn:
1212 case bfd_mach_h8300sn:
1213 bfd_put_16 (abfd,
1214 bfd_coff_reloc16_get_value (reloc,
1215 link_info,
1216 input_section),
1217 vectors_sec->contents + h->offset);
1218 break;
1219 case bfd_mach_h8300h:
1220 case bfd_mach_h8300s:
1221 bfd_put_32 (abfd,
1222 bfd_coff_reloc16_get_value (reloc,
1223 link_info,
1224 input_section),
1225 vectors_sec->contents + h->offset);
1226 break;
1227 default:
1228 abort ();
1229 }
252b5132
RH
1230
1231 /* Gross. We've already written the contents of the vector section
1232 before we get here... So we write it again with the new data. */
1233 bfd_set_section_contents (vectors_sec->output_section->owner,
1234 vectors_sec->output_section,
1235 vectors_sec->contents,
dc810e39 1236 (file_ptr) vectors_sec->output_offset,
eea6121a 1237 vectors_sec->size);
252b5132
RH
1238 break;
1239 }
1240
1241 default:
1242 abort ();
1243 break;
1244
1245 }
1246
1247 *src_ptr = src_address;
1248 *dst_ptr = dst_address;
1249}
1250
252b5132
RH
1251/* Routine for the h8300 linker.
1252
1253 This routine is necessary to handle the special R_MEM_INDIRECT
1254 relocs on the h8300. It's responsible for generating a vectors
1255 section and attaching it to an input bfd as well as sizing
1256 the vectors section. It also creates our vectors hash table.
1257
1258 It uses the generic linker routines to actually add the symbols.
1259 from this BFD to the bfd linker hash table. It may add a few
1260 selected static symbols to the bfd linker hash table. */
1261
b34976b6 1262static bfd_boolean
c6baf75e 1263h8300_bfd_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132
RH
1264{
1265 asection *sec;
1266 struct funcvec_hash_table *funcvec_hash_table;
dc810e39 1267 bfd_size_type amt;
0171ee92
AM
1268 struct h8300_coff_link_hash_table *htab;
1269
1270 /* Add the symbols using the generic code. */
1271 _bfd_generic_link_add_symbols (abfd, info);
1272
1273 if (info->hash->creator != abfd->xvec)
1274 return TRUE;
1275
1276 htab = h8300_coff_hash_table (info);
252b5132
RH
1277
1278 /* If we haven't created a vectors section, do so now. */
0171ee92 1279 if (!htab->vectors_sec)
252b5132
RH
1280 {
1281 flagword flags;
1282
1283 /* Make sure the appropriate flags are set, including SEC_IN_MEMORY. */
1284 flags = (SEC_ALLOC | SEC_LOAD
1285 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_READONLY);
0171ee92 1286 htab->vectors_sec = bfd_make_section (abfd, ".vectors");
252b5132
RH
1287
1288 /* If the section wasn't created, or we couldn't set the flags,
0171ee92
AM
1289 quit quickly now, rather than dying a painful death later. */
1290 if (!htab->vectors_sec
1291 || !bfd_set_section_flags (abfd, htab->vectors_sec, flags))
b34976b6 1292 return FALSE;
252b5132
RH
1293
1294 /* Also create the vector hash table. */
dc810e39
AM
1295 amt = sizeof (struct funcvec_hash_table);
1296 funcvec_hash_table = (struct funcvec_hash_table *) bfd_alloc (abfd, amt);
252b5132
RH
1297
1298 if (!funcvec_hash_table)
b34976b6 1299 return FALSE;
252b5132
RH
1300
1301 /* And initialize the funcvec hash table. */
1302 if (!funcvec_hash_table_init (funcvec_hash_table, abfd,
1303 funcvec_hash_newfunc))
1304 {
1305 bfd_release (abfd, funcvec_hash_table);
b34976b6 1306 return FALSE;
252b5132
RH
1307 }
1308
1309 /* Store away a pointer to the funcvec hash table. */
0171ee92 1310 htab->funcvec_hash_table = funcvec_hash_table;
252b5132
RH
1311 }
1312
1313 /* Load up the function vector hash table. */
0171ee92 1314 funcvec_hash_table = htab->funcvec_hash_table;
252b5132
RH
1315
1316 /* Now scan the relocs for all the sections in this bfd; create
1317 additional space in the .vectors section as needed. */
1318 for (sec = abfd->sections; sec; sec = sec->next)
1319 {
1320 long reloc_size, reloc_count, i;
1321 asymbol **symbols;
1322 arelent **relocs;
1323
1324 /* Suck in the relocs, symbols & canonicalize them. */
1325 reloc_size = bfd_get_reloc_upper_bound (abfd, sec);
1326 if (reloc_size <= 0)
1327 continue;
1328
dc810e39 1329 relocs = (arelent **) bfd_malloc ((bfd_size_type) reloc_size);
252b5132 1330 if (!relocs)
b34976b6 1331 return FALSE;
252b5132
RH
1332
1333 /* The symbols should have been read in by _bfd_generic link_add_symbols
1334 call abovec, so we can cheat and use the pointer to them that was
1335 saved in the above call. */
1336 symbols = _bfd_generic_link_get_symbols(abfd);
1337 reloc_count = bfd_canonicalize_reloc (abfd, sec, relocs, symbols);
1338 if (reloc_count <= 0)
1339 {
1340 free (relocs);
1341 continue;
1342 }
1343
1344 /* Now walk through all the relocations in this section. */
1345 for (i = 0; i < reloc_count; i++)
1346 {
1347 arelent *reloc = relocs[i];
1348 asymbol *symbol = *(reloc->sym_ptr_ptr);
1349 const char *name;
1350
1351 /* We've got an indirect reloc. See if we need to add it
1352 to the function vector table. At this point, we have
1353 to add a new entry for each unique symbol referenced
1354 by an R_MEM_INDIRECT relocation except for a reloc
1355 against the absolute section symbol. */
1356 if (reloc->howto->type == R_MEM_INDIRECT
1357 && symbol != bfd_abs_section_ptr->symbol)
1358
1359 {
dc810e39 1360 struct funcvec_hash_table *ftab;
252b5132
RH
1361 struct funcvec_hash_entry *h;
1362
1363 name = symbol->name;
1364 if (symbol->flags & BSF_LOCAL)
1365 {
dc810e39 1366 char *new_name;
252b5132 1367
dc810e39 1368 new_name = bfd_malloc ((bfd_size_type) strlen (name) + 9);
252b5132
RH
1369 if (new_name == NULL)
1370 abort ();
1371
1372 strcpy (new_name, name);
1373 sprintf (new_name + strlen (name), "_%08x",
cc040812 1374 (int) symbol->section);
252b5132
RH
1375 name = new_name;
1376 }
1377
1378 /* Look this symbol up in the function vector hash table. */
0171ee92 1379 ftab = htab->funcvec_hash_table;
b34976b6 1380 h = funcvec_hash_lookup (ftab, name, FALSE, FALSE);
252b5132 1381
252b5132
RH
1382 /* If this symbol isn't already in the hash table, add
1383 it and bump up the size of the hash table. */
1384 if (h == NULL)
1385 {
b34976b6 1386 h = funcvec_hash_lookup (ftab, name, TRUE, TRUE);
252b5132
RH
1387 if (h == NULL)
1388 {
1389 free (relocs);
b34976b6 1390 return FALSE;
252b5132
RH
1391 }
1392
1393 /* Bump the size of the vectors section. Each vector
1394 takes 2 bytes on the h8300 and 4 bytes on the h8300h. */
d4e2de6b
NC
1395 switch (bfd_get_mach (abfd))
1396 {
1397 case bfd_mach_h8300:
1398 case bfd_mach_h8300hn:
1399 case bfd_mach_h8300sn:
eea6121a 1400 htab->vectors_sec->size += 2;
d4e2de6b
NC
1401 break;
1402 case bfd_mach_h8300h:
1403 case bfd_mach_h8300s:
eea6121a 1404 htab->vectors_sec->size += 4;
d4e2de6b
NC
1405 break;
1406 default:
1407 abort ();
1408 }
252b5132
RH
1409 }
1410 }
1411 }
1412
1413 /* We're done with the relocations, release them. */
1414 free (relocs);
1415 }
1416
1417 /* Now actually allocate some space for the function vector. It's
1418 wasteful to do this more than once, but this is easier. */
0171ee92 1419 sec = htab->vectors_sec;
eea6121a 1420 if (sec->size != 0)
252b5132
RH
1421 {
1422 /* Free the old contents. */
dc810e39
AM
1423 if (sec->contents)
1424 free (sec->contents);
252b5132
RH
1425
1426 /* Allocate new contents. */
eea6121a 1427 sec->contents = bfd_malloc (sec->size);
252b5132
RH
1428 }
1429
b34976b6 1430 return TRUE;
252b5132
RH
1431}
1432
1433#define coff_reloc16_extra_cases h8300_reloc16_extra_cases
1434#define coff_reloc16_estimate h8300_reloc16_estimate
1435#define coff_bfd_link_add_symbols h8300_bfd_link_add_symbols
1436#define coff_bfd_link_hash_table_create h8300_coff_link_hash_table_create
1437
1438#define COFF_LONG_FILENAMES
1439#include "coffcode.h"
1440
252b5132
RH
1441#undef coff_bfd_get_relocated_section_contents
1442#undef coff_bfd_relax_section
1443#define coff_bfd_get_relocated_section_contents \
1444 bfd_coff_reloc16_get_relocated_section_contents
1445#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
1446
3fa78519 1447CREATE_BIG_COFF_TARGET_VEC (h8300coff_vec, "coff-h8300", BFD_IS_RELAXABLE, 0, '_', NULL, COFF_SWAP_TABLE)
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