ld error/warning messages
[deliverable/binutils-gdb.git] / ld / emultempl / msp430.em
CommitLineData
837a17b3
NC
1# This shell script emits a C file. -*- C -*-
2# It does some substitutions.
3fragment <<EOF
4/* This file is is generated by a shell script. DO NOT EDIT! */
5
6/* Emulate the original gld for the given ${EMULATION_NAME}
219d1afa 7 Copyright (C) 2014-2018 Free Software Foundation, Inc.
837a17b3
NC
8 Written by Steve Chamberlain steve@cygnus.com
9 Extended for the MSP430 by Nick Clifton nickc@redhat.com
6c19b93b 10
837a17b3
NC
11 This file is part of the GNU Binutils.
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 3 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
26 MA 02110-1301, USA. */
27
28#define TARGET_IS_${EMULATION_NAME}
29
30#include "sysdep.h"
31#include "bfd.h"
32#include "bfdlink.h"
33
34#include "ld.h"
7ef3addb 35#include "getopt.h"
837a17b3
NC
36#include "ldmain.h"
37#include "ldmisc.h"
38#include "ldexp.h"
39#include "ldlang.h"
40#include "ldfile.h"
41#include "ldemul.h"
42#include "libiberty.h"
7ef3addb
JL
43#include <ldgram.h>
44
45enum regions
46{
47 REGION_NONE = 0,
48 REGION_LOWER,
49 REGION_UPPER,
50 REGION_EITHER = 3,
51};
52
53enum either_placement_stage
54{
55 LOWER_TO_UPPER,
56 UPPER_TO_LOWER,
57};
58
59enum { ROM, RAM };
60
61static int data_region = REGION_NONE;
62static int code_region = REGION_NONE;
63static bfd_boolean disable_sec_transformation = FALSE;
64
65#define MAX_PREFIX_LENGTH 7
837a17b3
NC
66
67EOF
68
69# Import any needed special functions and/or overrides.
70#
71if test -n "$EXTRA_EM_FILE" ; then
72 source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
73fi
74
75if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
76fragment <<EOF
77
78static void
79gld${EMULATION_NAME}_before_parse (void)
80{
81#ifndef TARGET_ /* I.e., if not generic. */
82 ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
83#endif /* not TARGET_ */
84
85 /* The MSP430 port *needs* linker relaxtion in order to cope with large
86 functions where conditional branches do not fit into a +/- 1024 byte range. */
0e1862bb 87 if (!bfd_link_relocatable (&link_info))
837a17b3
NC
88 TARGET_ENABLE_RELAXATION;
89}
90
91EOF
92fi
93
94if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
95fragment <<EOF
96
97static char *
98gld${EMULATION_NAME}_get_script (int *isfile)
99EOF
100
101if test x"$COMPILE_IN" = xyes
102then
103# Scripts compiled in.
104
105# sed commands to quote an ld script as a C string.
106sc="-f stringify.sed"
107
108fragment <<EOF
109{
110 *isfile = 0;
111
0e1862bb 112 if (bfd_link_relocatable (&link_info) && config.build_constructors)
837a17b3
NC
113 return
114EOF
115sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
0e1862bb 116echo ' ; else if (bfd_link_relocatable (&link_info)) return' >> e${EMULATION_NAME}.c
837a17b3
NC
117sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
118echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
119sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
120echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
121sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
122echo ' ; else return' >> e${EMULATION_NAME}.c
123sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
124echo '; }' >> e${EMULATION_NAME}.c
125
126else
127# Scripts read from the filesystem.
128
129fragment <<EOF
130{
131 *isfile = 1;
132
0e1862bb 133 if (bfd_link_relocatable (&link_info) && config.build_constructors)
837a17b3 134 return "ldscripts/${EMULATION_NAME}.xu";
0e1862bb 135 else if (bfd_link_relocatable (&link_info))
837a17b3
NC
136 return "ldscripts/${EMULATION_NAME}.xr";
137 else if (!config.text_read_only)
138 return "ldscripts/${EMULATION_NAME}.xbn";
139 else if (!config.magic_demand_paged)
140 return "ldscripts/${EMULATION_NAME}.xn";
141 else
142 return "ldscripts/${EMULATION_NAME}.x";
143}
144EOF
145fi
146fi
147
148if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
149fragment <<EOF
150
7ef3addb
JL
151static unsigned int
152data_statement_size (lang_data_statement_type *d)
153{
154 unsigned int size = 0;
155 switch (d->type)
156 {
157 case QUAD:
158 case SQUAD:
159 size = QUAD_SIZE;
160 break;
161 case LONG:
162 size = LONG_SIZE;
163 break;
164 case SHORT:
165 size = SHORT_SIZE;
166 break;
167 case BYTE:
168 size = BYTE_SIZE;
169 break;
170 default:
d003af55 171 einfo (_("%P: error: unhandled data_statement size\n"));
7ef3addb
JL
172 FAIL ();
173 }
174 return size;
175}
176
837a17b3
NC
177/* Helper function for place_orphan that computes the size
178 of sections already mapped to the given statement. */
179
180static bfd_size_type
181scan_children (lang_statement_union_type * l)
182{
183 bfd_size_type amount = 0;
184
185 while (l != NULL)
186 {
187 switch (l->header.type)
188 {
189 case lang_input_section_enum:
190 if (l->input_section.section->flags & SEC_ALLOC)
191 amount += l->input_section.section->size;
192 break;
193
194 case lang_constructors_statement_enum:
195 case lang_assignment_statement_enum:
7ef3addb 196 case lang_padding_statement_enum:
837a17b3
NC
197 break;
198
199 case lang_wild_statement_enum:
6c19b93b 200 amount += scan_children (l->wild_statement.children.head);
837a17b3
NC
201 break;
202
7ef3addb
JL
203 case lang_data_statement_enum:
204 amount += data_statement_size (&l->data_statement);
205 break;
206
837a17b3
NC
207 default:
208 fprintf (stderr, "msp430 orphan placer: unhandled lang type %d\n", l->header.type);
209 break;
210 }
211
212 l = l->header.next;
213 }
214
215 return amount;
216}
6c19b93b 217
837a17b3
NC
218/* Place an orphan section. We use this to put .either sections
219 into either their lower or their upper equivalents. */
220
221static lang_output_section_statement_type *
222gld${EMULATION_NAME}_place_orphan (asection * s,
223 const char * secname,
224 int constraint)
225{
226 char * lower_name;
227 char * upper_name;
228 char * name;
e1fa0163 229 char * buf = NULL;
837a17b3
NC
230 lang_output_section_statement_type * lower;
231 lang_output_section_statement_type * upper;
837a17b3
NC
232
233 if ((s->flags & SEC_ALLOC) == 0)
234 return NULL;
235
0e1862bb 236 if (bfd_link_relocatable (&link_info))
837a17b3
NC
237 return NULL;
238
239 /* If constraints are involved let the linker handle the placement normally. */
240 if (constraint != 0)
241 return NULL;
242
243 /* We only need special handling for .either sections. */
244 if (strncmp (secname, ".either.", 8) != 0)
245 return NULL;
246
247 /* Skip the .either prefix. */
248 secname += 7;
249
250 /* Compute the names of the corresponding upper and lower
251 sections. If the input section name contains another period,
252 only use the part of the name before the second dot. */
253 if (strchr (secname + 1, '.') != NULL)
254 {
e1fa0163 255 buf = name = xstrdup (secname);
837a17b3
NC
256
257 * strchr (name + 1, '.') = 0;
258 }
259 else
260 name = (char *) secname;
6c19b93b 261
e1fa0163
NC
262 lower_name = concat (".lower", name, NULL);
263 upper_name = concat (".upper", name, NULL);
837a17b3
NC
264
265 /* Find the corresponding lower and upper sections. */
266 lower = lang_output_section_find (lower_name);
267 upper = lang_output_section_find (upper_name);
837a17b3 268
7ef3addb
JL
269 if (lower == NULL && upper == NULL)
270 {
d003af55 271 einfo (_("%P: error: no section named %s or %s in linker script\n"),
7ef3addb
JL
272 lower_name, upper_name);
273 goto end;
274 }
275 else if (lower == NULL)
837a17b3 276 {
7ef3addb
JL
277 lower = lang_output_section_find (name);
278 if (lower == NULL)
279 {
d003af55 280 einfo (_("%P: error: no section named %s in linker script\n"), name);
e1fa0163 281 goto end;
837a17b3
NC
282 }
283 }
7ef3addb
JL
284
285 /* Always place orphaned sections in lower. Optimal placement of either
286 sections is performed later, once section sizes have been finalized. */
287 lang_add_section (& lower->children, s, NULL, lower);
288 end:
289 free (upper_name);
290 free (lower_name);
291 if (buf)
292 free (buf);
293 return lower;
294}
295EOF
296fi
297
298fragment <<EOF
299
300static bfd_boolean
301change_output_section (lang_statement_union_type ** head,
302 asection *s,
303 lang_output_section_statement_type * new_output_section)
304{
305 asection *is;
306 lang_statement_union_type * prev = NULL;
307 lang_statement_union_type * curr;
308
309 curr = *head;
310 while (curr != NULL)
311 {
312 switch (curr->header.type)
313 {
314 case lang_input_section_enum:
315 is = curr->input_section.section;
316 if (is == s)
317 {
318 s->output_section = NULL;
319 lang_add_section (& (new_output_section->children), s, NULL,
320 new_output_section);
321 /* Remove the section from the old output section. */
322 if (prev == NULL)
323 *head = curr->header.next;
324 else
325 prev->header.next = curr->header.next;
326 return TRUE;
327 }
328 break;
329 case lang_wild_statement_enum:
330 if (change_output_section (&(curr->wild_statement.children.head),
331 s, new_output_section))
332 return TRUE;
333 break;
334 default:
335 break;
336 }
337 prev = curr;
338 curr = curr->header.next;
339 }
340 return FALSE;
341}
342
343static void
344move_prefixed_section (asection *s, char *new_name,
345 lang_output_section_statement_type * new_output_sec)
346{
347 s->name = new_name;
348 if (s->output_section == NULL)
349 lang_add_section (& (new_output_sec->children), s, NULL, new_output_sec);
837a17b3
NC
350 else
351 {
7ef3addb
JL
352 lang_output_section_statement_type * curr_output_sec
353 = lang_output_section_find (s->output_section->name);
354 change_output_section (&(curr_output_sec->children.head), s,
355 new_output_sec);
356 }
357}
358
359static void
360add_region_prefix (bfd *abfd, asection *s,
361 ATTRIBUTE_UNUSED void *unused)
362{
363 const char *curr_name = bfd_get_section_name (abfd, s);
364 char * base_name;
365 char * new_input_sec_name = NULL;
366 char * new_output_sec_name = NULL;
367 int region = REGION_NONE;
368
369 if (strncmp (curr_name, ".text", 5) == 0)
370 {
371 region = code_region;
372 base_name = concat (".text", NULL);
373 }
374 else if (strncmp (curr_name, ".data", 5) == 0)
375 {
376 region = data_region;
377 base_name = concat (".data", NULL);
378 }
379 else if (strncmp (curr_name, ".bss", 4) == 0)
380 {
381 region = data_region;
382 base_name = concat (".bss", NULL);
383 }
384 else if (strncmp (curr_name, ".rodata", 7) == 0)
385 {
386 region = data_region;
387 base_name = concat (".rodata", NULL);
388 }
389 else
390 return;
391
392 switch (region)
393 {
394 case REGION_NONE:
395 break;
396 case REGION_UPPER:
397 new_input_sec_name = concat (".upper", curr_name, NULL);
398 new_output_sec_name = concat (".upper", base_name, NULL);
399 lang_output_section_statement_type * upper
400 = lang_output_section_find (new_output_sec_name);
401 if (upper != NULL)
402 {
403 move_prefixed_section (s, new_input_sec_name, upper);
404 }
405 else
d003af55 406 einfo (_("%P: error: no section named %s in linker script\n"),
7ef3addb
JL
407 new_output_sec_name);
408 break;
409 case REGION_LOWER:
410 new_input_sec_name = concat (".lower", curr_name, NULL);
411 new_output_sec_name = concat (".lower", base_name, NULL);
412 lang_output_section_statement_type * lower
413 = lang_output_section_find (new_output_sec_name);
414 if (lower != NULL)
415 {
416 move_prefixed_section (s, new_input_sec_name, lower);
417 }
418 else
d003af55 419 einfo (_("%P: error: no section named %s in linker script\n"),
7ef3addb
JL
420 new_output_sec_name);
421 break;
422 case REGION_EITHER:
423 s->name = concat (".either", curr_name, NULL);
424 break;
425 default:
426 /* Unreachable. */
427 FAIL ();
428 break;
429 }
430 free (base_name);
431 if (new_input_sec_name)
432 {
433 free (new_input_sec_name);
434 free (new_output_sec_name);
435 }
436}
437
438static void
439msp430_elf_after_open (void)
440{
441 bfd *abfd;
442
443 gld${EMULATION_NAME}_after_open ();
837a17b3 444
7ef3addb
JL
445 /* If neither --code-region or --data-region have been passed, do not
446 transform sections names. */
447 if ((code_region == REGION_NONE && data_region == REGION_NONE)
448 || disable_sec_transformation)
449 return;
450
451 for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link.next)
452 bfd_map_over_sections (abfd, add_region_prefix, NULL);
453}
454
455#define OPTION_CODE_REGION 321
456#define OPTION_DATA_REGION (OPTION_CODE_REGION + 1)
457#define OPTION_DISABLE_TRANS (OPTION_CODE_REGION + 2)
458
459static void
460gld${EMULATION_NAME}_add_options
461 (int ns, char **shortopts, int nl, struct option **longopts,
462 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
463{
464 static const char xtra_short[] = { };
837a17b3 465
7ef3addb
JL
466 static const struct option xtra_long[] =
467 {
468 { "code-region", required_argument, NULL, OPTION_CODE_REGION },
469 { "data-region", required_argument, NULL, OPTION_DATA_REGION },
470 { "disable-sec-transformation", no_argument, NULL,
471 OPTION_DISABLE_TRANS },
472 { NULL, no_argument, NULL, 0 }
473 };
474
475 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
476 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
477 *longopts = (struct option *)
478 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
479 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
480}
837a17b3 481
7ef3addb
JL
482static void
483gld${EMULATION_NAME}_list_options (FILE * file)
484{
df5f2391
AM
485 fprintf (file, _(" --code-region={either,lower,upper,none}\n\
486 Transform .text* sections to {either,lower,upper,none}.text* sections\n"));
487 fprintf (file, _(" --data-region={either,lower,upper,none}\n\
488 Transform .data*, .rodata* and .bss* sections to\n\
489 {either,lower,upper,none}.{bss,data,rodata}* sections\n"));
490 fprintf (file, _(" --disable-sec-transformation\n\
491 Disable transformation of .{text,data,bss,rodata}* sections to\n\
492 add the {either,lower,upper,none} prefixes\n"));
7ef3addb 493}
837a17b3 494
7ef3addb
JL
495static bfd_boolean
496gld${EMULATION_NAME}_handle_option (int optc)
497{
498 switch (optc)
499 {
500 case OPTION_CODE_REGION:
501 if (strcmp (optarg, "upper") == 0)
502 code_region = REGION_UPPER;
503 else if (strcmp (optarg, "lower") == 0)
504 code_region = REGION_LOWER;
505 else if (strcmp (optarg, "either") == 0)
506 code_region = REGION_EITHER;
507 else if (strcmp (optarg, "none") == 0)
508 code_region = REGION_NONE;
509 else if (strlen (optarg) == 0)
510 {
df5f2391
AM
511 einfo (_("%P: --code-region requires an argument: "
512 "{upper,lower,either,none}\n"));
7ef3addb
JL
513 return FALSE;
514 }
837a17b3 515 else
7ef3addb 516 {
df5f2391
AM
517 einfo (_("%P: error: unrecognized argument to --code-region= option: "
518 "\"%s\"\n"), optarg);
7ef3addb
JL
519 return FALSE;
520 }
521 break;
522
523 case OPTION_DATA_REGION:
524 if (strcmp (optarg, "upper") == 0)
525 data_region = REGION_UPPER;
526 else if (strcmp (optarg, "lower") == 0)
527 data_region = REGION_LOWER;
528 else if (strcmp (optarg, "either") == 0)
529 data_region = REGION_EITHER;
530 else if (strcmp (optarg, "none") == 0)
531 data_region = REGION_NONE;
532 else if (strlen (optarg) == 0)
533 {
df5f2391
AM
534 einfo (_("%P: --data-region requires an argument: "
535 "{upper,lower,either,none}\n"));
7ef3addb
JL
536 return FALSE;
537 }
538 else
539 {
df5f2391
AM
540 einfo (_("%P: error: unrecognized argument to --data-region= option: "
541 "\"%s\"\n"), optarg);
7ef3addb
JL
542 return FALSE;
543 }
544 break;
545
546 case OPTION_DISABLE_TRANS:
547 disable_sec_transformation = TRUE;
548 break;
549
550 default:
551 return FALSE;
552 }
553 return TRUE;
554}
555
556static void
557eval_upper_either_sections (bfd *abfd, asection *s, void *data)
558{
96d01d93 559 const char * base_sec_name;
7ef3addb
JL
560 const char * curr_name;
561 char * either_name;
562 int curr_region;
563
564 lang_output_section_statement_type * lower;
565 lang_output_section_statement_type * upper;
566 static bfd_size_type *lower_size = 0;
567 static bfd_size_type *upper_size = 0;
568 static bfd_size_type lower_size_rom = 0;
569 static bfd_size_type lower_size_ram = 0;
570 static bfd_size_type upper_size_rom = 0;
571 static bfd_size_type upper_size_ram = 0;
572
573 if ((s->flags & SEC_ALLOC) == 0)
574 return;
575 if (bfd_link_relocatable (&link_info))
576 return;
577
96d01d93 578 base_sec_name = (const char *) data;
7ef3addb
JL
579 curr_name = bfd_get_section_name (abfd, s);
580
581 /* Only concerned with .either input sections in the upper output section. */
582 either_name = concat (".either", base_sec_name, NULL);
583 if (strncmp (curr_name, either_name, strlen (either_name)) != 0
584 || strncmp (s->output_section->name, ".upper", 6) != 0)
585 goto end;
586
587 lower = lang_output_section_find (concat (".lower", base_sec_name, NULL));
588 upper = lang_output_section_find (concat (".upper", base_sec_name, NULL));
589
590 if (upper == NULL || upper->region == NULL)
591 goto end;
592 else if (lower == NULL)
593 lower = lang_output_section_find (base_sec_name);
594 if (lower == NULL || lower->region == NULL)
595 goto end;
596
597 if (strcmp (base_sec_name, ".text") == 0
598 || strcmp (base_sec_name, ".rodata") == 0)
599 curr_region = ROM;
600 else
601 curr_region = RAM;
602
603 if (curr_region == ROM)
604 {
605 if (lower_size_rom == 0)
606 {
607 lower_size_rom = lower->region->current - lower->region->origin;
608 upper_size_rom = upper->region->current - upper->region->origin;
609 }
610 lower_size = &lower_size_rom;
611 upper_size = &upper_size_rom;
612 }
613 else if (curr_region == RAM)
614 {
615 if (lower_size_ram == 0)
616 {
617 lower_size_ram = lower->region->current - lower->region->origin;
618 upper_size_ram = upper->region->current - upper->region->origin;
619 }
620 lower_size = &lower_size_ram;
621 upper_size = &upper_size_ram;
837a17b3
NC
622 }
623
7ef3addb
JL
624 /* Move sections in the upper region that would fit in the lower
625 region to the lower region. */
626 if (*lower_size + s->size < lower->region->length)
627 {
628 if (change_output_section (&(upper->children.head), s, lower))
629 {
630 *upper_size -= s->size;
631 *lower_size += s->size;
632 }
633 }
e1fa0163 634 end:
7ef3addb 635 free (either_name);
837a17b3 636}
837a17b3 637
7ef3addb
JL
638static void
639eval_lower_either_sections (bfd *abfd, asection *s, void *data)
640{
96d01d93 641 const char * base_sec_name;
7ef3addb
JL
642 const char * curr_name;
643 char * either_name;
644 int curr_region;
645 lang_output_section_statement_type * output_sec;
646 lang_output_section_statement_type * lower;
647 lang_output_section_statement_type * upper;
648
649 static bfd_size_type *lower_size = 0;
650 static bfd_size_type lower_size_rom = 0;
651 static bfd_size_type lower_size_ram = 0;
652
653 if ((s->flags & SEC_ALLOC) == 0)
654 return;
655 if (bfd_link_relocatable (&link_info))
656 return;
657
96d01d93 658 base_sec_name = (const char *) data;
7ef3addb
JL
659 curr_name = bfd_get_section_name (abfd, s);
660
661 /* Only concerned with .either input sections in the lower or "default"
662 output section i.e. not in the upper output section. */
663 either_name = concat (".either", base_sec_name, NULL);
664 if (strncmp (curr_name, either_name, strlen (either_name)) != 0
665 || strncmp (s->output_section->name, ".upper", 6) == 0)
666 return;
667
668 if (strcmp (base_sec_name, ".text") == 0
669 || strcmp (base_sec_name, ".rodata") == 0)
670 curr_region = ROM;
671 else
672 curr_region = RAM;
673
674 output_sec = lang_output_section_find (s->output_section->name);
675
676 /* If the output_section doesn't exist, this has already been reported in
677 place_orphan, so don't need to warn again. */
678 if (output_sec == NULL || output_sec->region == NULL)
679 goto end;
680
681 /* lower and output_sec might be the same, but in some cases an .either
682 section can end up in base_sec_name if it hasn't been placed by
683 place_orphan. */
684 lower = lang_output_section_find (concat (".lower", base_sec_name, NULL));
685 upper = lang_output_section_find (concat (".upper", base_sec_name, NULL));
686 if (upper == NULL)
687 goto end;
688
689 if (curr_region == ROM)
690 {
691 if (lower_size_rom == 0)
692 {
693 /* Get the size of other items in the lower region that aren't the
694 sections to be moved around. */
695 lower_size_rom
696 = (output_sec->region->current - output_sec->region->origin)
697 - scan_children (output_sec->children.head);
698 if (output_sec != lower && lower != NULL)
699 lower_size_rom -= scan_children (lower->children.head);
700 }
701 lower_size = &lower_size_rom;
702 }
703 else if (curr_region == RAM)
704 {
705 if (lower_size_ram == 0)
706 {
707 lower_size_ram
708 = (output_sec->region->current - output_sec->region->origin)
709 - scan_children (output_sec->children.head);
710 if (output_sec != lower && lower != NULL)
711 lower_size_ram -= scan_children (lower->children.head);
712 }
713 lower_size = &lower_size_ram;
714 }
715 /* Move sections that cause the lower region to overflow to the upper region. */
716 if (*lower_size + s->size > output_sec->region->length)
717 change_output_section (&(output_sec->children.head), s, upper);
718 else
719 *lower_size += s->size;
720 end:
721 free (either_name);
722}
723
724/* This function is similar to lang_relax_sections, but without the size
725 evaluation code that is always executed after relaxation. */
726static void
727intermediate_relax_sections (void)
728{
729 int i = link_info.relax_pass;
730
731 /* The backend can use it to determine the current pass. */
732 link_info.relax_pass = 0;
733
734 while (i--)
735 {
736 bfd_boolean relax_again;
737
738 link_info.relax_trip = -1;
739 do
740 {
741 link_info.relax_trip++;
742
743 lang_do_assignments (lang_assigning_phase_enum);
744
745 lang_reset_memory_regions ();
746
747 relax_again = FALSE;
748 lang_size_sections (&relax_again, FALSE);
749 }
750 while (relax_again);
751
752 link_info.relax_pass++;
753 }
754}
755
756static void
757msp430_elf_after_allocation (void)
758{
759 int relax_count = 0;
96d01d93 760 unsigned int i;
7ef3addb
JL
761 /* Go over each section twice, once to place either sections that don't fit
762 in lower into upper, and then again to move any sections in upper that
763 fit in lower into lower. */
764 for (i = 0; i < 8; i++)
765 {
766 int placement_stage = (i < 4) ? LOWER_TO_UPPER : UPPER_TO_LOWER;
96d01d93 767 const char * base_sec_name;
7ef3addb
JL
768 lang_output_section_statement_type * upper;
769
770 switch (i % 4)
771 {
96d01d93 772 default:
7ef3addb 773 case 0:
96d01d93 774 base_sec_name = ".text";
7ef3addb
JL
775 break;
776 case 1:
96d01d93 777 base_sec_name = ".data";
7ef3addb
JL
778 break;
779 case 2:
96d01d93 780 base_sec_name = ".bss";
7ef3addb
JL
781 break;
782 case 3:
96d01d93 783 base_sec_name = ".rodata";
7ef3addb
JL
784 break;
785 }
786 upper = lang_output_section_find (concat (".upper", base_sec_name, NULL));
787 if (upper != NULL)
788 {
789 /* Can't just use one iteration over the all the sections to make
790 both lower->upper and upper->lower transformations because the
791 iterator encounters upper sections before all lower sections have
792 been examined. */
793 bfd *abfd;
794
795 if (placement_stage == LOWER_TO_UPPER)
796 {
797 /* Perform relaxation and get the final size of sections
798 before trying to fit .either sections in the correct
799 ouput sections. */
800 if (relax_count == 0)
801 {
802 intermediate_relax_sections ();
803 relax_count++;
804 }
805 for (abfd = link_info.input_bfds; abfd != NULL;
806 abfd = abfd->link.next)
807 {
808 bfd_map_over_sections (abfd, eval_lower_either_sections,
96d01d93 809 (void *) base_sec_name);
7ef3addb
JL
810 }
811 }
812 else if (placement_stage == UPPER_TO_LOWER)
813 {
814 /* Relax again before moving upper->lower. */
815 if (relax_count == 1)
816 {
817 intermediate_relax_sections ();
818 relax_count++;
819 }
820 for (abfd = link_info.input_bfds; abfd != NULL;
821 abfd = abfd->link.next)
822 {
823 bfd_map_over_sections (abfd, eval_upper_either_sections,
96d01d93 824 (void *) base_sec_name);
7ef3addb
JL
825 }
826 }
827
828 }
7ef3addb
JL
829 }
830 gld${EMULATION_NAME}_after_allocation ();
831}
837a17b3
NC
832
833struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
834{
835 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
836 ${LDEMUL_SYSLIB-syslib_default},
837 ${LDEMUL_HLL-hll_default},
838 ${LDEMUL_AFTER_PARSE-after_parse_default},
7ef3addb 839 msp430_elf_after_open,
5c3261b0 840 after_check_relocs_default,
7ef3addb 841 msp430_elf_after_allocation,
837a17b3
NC
842 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
843 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
844 ${LDEMUL_BEFORE_ALLOCATION-before_allocation_default},
845 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
846 "${EMULATION_NAME}",
847 "${OUTPUT_FORMAT}",
848 ${LDEMUL_FINISH-finish_default},
849 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
850 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-NULL},
851 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
852 ${LDEMUL_SET_SYMBOLS-NULL},
853 ${LDEMUL_PARSE_ARGS-NULL},
7ef3addb
JL
854 gld${EMULATION_NAME}_add_options,
855 gld${EMULATION_NAME}_handle_option,
837a17b3 856 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
7ef3addb 857 gld${EMULATION_NAME}_list_options,
837a17b3
NC
858 ${LDEMUL_RECOGNIZED_FILE-NULL},
859 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
860 ${LDEMUL_NEW_VERS_PATTERN-NULL},
861 ${LDEMUL_EXTRA_MAP_FILE_TEXT-NULL}
862};
863EOF
864# \f
865# Local Variables:
866# mode: c
867# End:
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