1 /* BFD back-end for MIPS Extended-Coff files.
2 Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
3 Original version by Per Bothner.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 #include "coff/internal.h"
28 #include "coff/symconst.h"
29 #include "coff/ecoff.h"
30 #include "coff/mips.h"
34 /* Prototypes for static functions. */
36 static boolean mips_ecoff_bad_format_hook PARAMS ((bfd *abfd, PTR filehdr));
37 static void mips_ecoff_swap_reloc_in PARAMS ((bfd *, PTR,
38 struct internal_reloc *));
39 static void mips_ecoff_swap_reloc_out PARAMS ((bfd *,
40 const struct internal_reloc *,
42 static void mips_adjust_reloc_in PARAMS ((bfd *,
43 const struct internal_reloc *,
45 static void mips_adjust_reloc_out PARAMS ((bfd *, const arelent *,
46 struct internal_reloc *));
47 static bfd_reloc_status_type mips_generic_reloc PARAMS ((bfd *abfd,
54 static bfd_reloc_status_type mips_refhi_reloc PARAMS ((bfd *abfd,
61 static bfd_reloc_status_type mips_reflo_reloc PARAMS ((bfd *abfd,
68 static bfd_reloc_status_type mips_gprel_reloc PARAMS ((bfd *abfd,
75 static bfd_reloc_status_type mips_relhi_reloc PARAMS ((bfd *abfd,
82 static bfd_reloc_status_type mips_rello_reloc PARAMS ((bfd *abfd,
89 static bfd_reloc_status_type mips_switch_reloc PARAMS ((bfd *abfd,
96 static void mips_relocate_hi PARAMS ((struct internal_reloc *refhi,
97 struct internal_reloc *reflo,
99 asection *input_section,
104 static boolean mips_relocate_section PARAMS ((bfd *, struct bfd_link_info *,
107 static boolean mips_read_relocs PARAMS ((bfd *, asection *));
108 static boolean mips_relax_section PARAMS ((bfd *, asection *,
109 struct bfd_link_info *,
111 static boolean mips_relax_pcrel16 PARAMS ((struct bfd_link_info *, bfd *,
113 struct ecoff_link_hash_entry *,
114 bfd_byte *, bfd_vma));
116 /* ECOFF has COFF sections, but the debugging information is stored in
117 a completely different format. ECOFF targets use some of the
118 swapping routines from coffswap.h, and some of the generic COFF
119 routines in coffgen.c, but, unlike the real COFF targets, do not
120 use coffcode.h itself.
122 Get the generic COFF swapping routines, except for the reloc,
123 symbol, and lineno ones. Give them ECOFF names. */
125 #define NO_COFF_RELOCS
126 #define NO_COFF_SYMBOLS
127 #define NO_COFF_LINENOS
128 #define coff_swap_filehdr_in mips_ecoff_swap_filehdr_in
129 #define coff_swap_filehdr_out mips_ecoff_swap_filehdr_out
130 #define coff_swap_aouthdr_in mips_ecoff_swap_aouthdr_in
131 #define coff_swap_aouthdr_out mips_ecoff_swap_aouthdr_out
132 #define coff_swap_scnhdr_in mips_ecoff_swap_scnhdr_in
133 #define coff_swap_scnhdr_out mips_ecoff_swap_scnhdr_out
134 #include "coffswap.h"
136 /* Get the ECOFF swapping routines. */
138 #include "ecoffswap.h"
140 /* How to process the various relocs types. */
142 static reloc_howto_type mips_howto_table[] =
144 /* Reloc type 0 is ignored. The reloc reading code ensures that
145 this is a reference to the .abs section, which will cause
146 bfd_perform_relocation to do nothing. */
147 HOWTO (MIPS_R_IGNORE, /* type */
149 0, /* size (0 = byte, 1 = short, 2 = long) */
151 false, /* pc_relative */
153 complain_overflow_dont, /* complain_on_overflow */
154 0, /* special_function */
156 false, /* partial_inplace */
159 false), /* pcrel_offset */
161 /* A 16 bit reference to a symbol, normally from a data section. */
162 HOWTO (MIPS_R_REFHALF, /* type */
164 1, /* size (0 = byte, 1 = short, 2 = long) */
166 false, /* pc_relative */
168 complain_overflow_bitfield, /* complain_on_overflow */
169 mips_generic_reloc, /* special_function */
170 "REFHALF", /* name */
171 true, /* partial_inplace */
172 0xffff, /* src_mask */
173 0xffff, /* dst_mask */
174 false), /* pcrel_offset */
176 /* A 32 bit reference to a symbol, normally from a data section. */
177 HOWTO (MIPS_R_REFWORD, /* type */
179 2, /* size (0 = byte, 1 = short, 2 = long) */
181 false, /* pc_relative */
183 complain_overflow_bitfield, /* complain_on_overflow */
184 mips_generic_reloc, /* special_function */
185 "REFWORD", /* name */
186 true, /* partial_inplace */
187 0xffffffff, /* src_mask */
188 0xffffffff, /* dst_mask */
189 false), /* pcrel_offset */
191 /* A 26 bit absolute jump address. */
192 HOWTO (MIPS_R_JMPADDR, /* type */
194 2, /* size (0 = byte, 1 = short, 2 = long) */
196 false, /* pc_relative */
198 complain_overflow_dont, /* complain_on_overflow */
199 /* This needs complex overflow
200 detection, because the upper four
201 bits must match the PC. */
202 mips_generic_reloc, /* special_function */
203 "JMPADDR", /* name */
204 true, /* partial_inplace */
205 0x3ffffff, /* src_mask */
206 0x3ffffff, /* dst_mask */
207 false), /* pcrel_offset */
209 /* The high 16 bits of a symbol value. Handled by the function
211 HOWTO (MIPS_R_REFHI, /* type */
213 2, /* size (0 = byte, 1 = short, 2 = long) */
215 false, /* pc_relative */
217 complain_overflow_bitfield, /* complain_on_overflow */
218 mips_refhi_reloc, /* special_function */
220 true, /* partial_inplace */
221 0xffff, /* src_mask */
222 0xffff, /* dst_mask */
223 false), /* pcrel_offset */
225 /* The low 16 bits of a symbol value. */
226 HOWTO (MIPS_R_REFLO, /* type */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
230 false, /* pc_relative */
232 complain_overflow_dont, /* complain_on_overflow */
233 mips_reflo_reloc, /* special_function */
235 true, /* partial_inplace */
236 0xffff, /* src_mask */
237 0xffff, /* dst_mask */
238 false), /* pcrel_offset */
240 /* A reference to an offset from the gp register. Handled by the
241 function mips_gprel_reloc. */
242 HOWTO (MIPS_R_GPREL, /* type */
244 2, /* size (0 = byte, 1 = short, 2 = long) */
246 false, /* pc_relative */
248 complain_overflow_signed, /* complain_on_overflow */
249 mips_gprel_reloc, /* special_function */
251 true, /* partial_inplace */
252 0xffff, /* src_mask */
253 0xffff, /* dst_mask */
254 false), /* pcrel_offset */
256 /* A reference to a literal using an offset from the gp register.
257 Handled by the function mips_gprel_reloc. */
258 HOWTO (MIPS_R_LITERAL, /* type */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
262 false, /* pc_relative */
264 complain_overflow_signed, /* complain_on_overflow */
265 mips_gprel_reloc, /* special_function */
266 "LITERAL", /* name */
267 true, /* partial_inplace */
268 0xffff, /* src_mask */
269 0xffff, /* dst_mask */
270 false), /* pcrel_offset */
277 /* This reloc is a Cygnus extension used when generating position
278 independent code for embedded systems. It represents a 16 bit PC
279 relative reloc rightshifted twice as used in the MIPS branch
281 HOWTO (MIPS_R_PCREL16, /* type */
283 2, /* size (0 = byte, 1 = short, 2 = long) */
285 true, /* pc_relative */
287 complain_overflow_signed, /* complain_on_overflow */
288 mips_generic_reloc, /* special_function */
289 "PCREL16", /* name */
290 true, /* partial_inplace */
291 0xffff, /* src_mask */
292 0xffff, /* dst_mask */
293 true), /* pcrel_offset */
295 /* This reloc is a Cygnus extension used when generating position
296 independent code for embedded systems. It represents the high 16
297 bits of a PC relative reloc. The next reloc must be
298 MIPS_R_RELLO, and the addend is formed from the addends of the
299 two instructions, just as in MIPS_R_REFHI and MIPS_R_REFLO. The
300 final value is actually PC relative to the location of the
301 MIPS_R_RELLO reloc, not the MIPS_R_RELHI reloc. */
302 HOWTO (MIPS_R_RELHI, /* type */
304 2, /* size (0 = byte, 1 = short, 2 = long) */
306 true, /* pc_relative */
308 complain_overflow_bitfield, /* complain_on_overflow */
309 mips_relhi_reloc, /* special_function */
311 true, /* partial_inplace */
312 0xffff, /* src_mask */
313 0xffff, /* dst_mask */
314 true), /* pcrel_offset */
316 /* This reloc is a Cygnus extension used when generating position
317 independent code for embedded systems. It represents the low 16
318 bits of a PC relative reloc. */
319 HOWTO (MIPS_R_RELLO, /* type */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
323 true, /* pc_relative */
325 complain_overflow_dont, /* complain_on_overflow */
326 mips_rello_reloc, /* special_function */
328 true, /* partial_inplace */
329 0xffff, /* src_mask */
330 0xffff, /* dst_mask */
331 true), /* pcrel_offset */
341 /* This reloc is a Cygnus extension used when generating position
342 independent code for embedded systems. It represents an entry in
343 a switch table, which is the difference between two symbols in
344 the .text section. The symndx is actually the offset from the
345 reloc address to the subtrahend. See include/coff/mips.h for
347 HOWTO (MIPS_R_SWITCH, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 true, /* pc_relative */
353 complain_overflow_dont, /* complain_on_overflow */
354 mips_switch_reloc, /* special_function */
356 true, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 true) /* pcrel_offset */
362 #define MIPS_HOWTO_COUNT \
363 (sizeof mips_howto_table / sizeof mips_howto_table[0])
365 /* When the linker is doing relaxing, it may change a external PCREL16
366 reloc. This typically represents an instruction like
371 lui $at,%hi(foo - $L1)
373 addiu $at,%lo(foo - $L1)
376 PCREL16_EXPANSION_ADJUSTMENT is the number of bytes this changes the
379 #define PCREL16_EXPANSION_ADJUSTMENT (4 * 4)
381 /* See whether the magic number matches. */
384 mips_ecoff_bad_format_hook (abfd, filehdr)
388 struct internal_filehdr *internal_f = (struct internal_filehdr *) filehdr;
390 switch (internal_f->f_magic)
393 /* I don't know what endianness this implies. */
397 case MIPS_MAGIC_BIG2:
398 case MIPS_MAGIC_BIG3:
399 return abfd->xvec->byteorder_big_p;
401 case MIPS_MAGIC_LITTLE:
402 case MIPS_MAGIC_LITTLE2:
403 case MIPS_MAGIC_LITTLE3:
404 return abfd->xvec->byteorder_big_p == false;
411 /* Reloc handling. MIPS ECOFF relocs are packed into 8 bytes in
412 external form. They use a bit which indicates whether the symbol
415 /* Swap a reloc in. */
418 mips_ecoff_swap_reloc_in (abfd, ext_ptr, intern)
421 struct internal_reloc *intern;
423 const RELOC *ext = (RELOC *) ext_ptr;
425 intern->r_vaddr = bfd_h_get_32 (abfd, (bfd_byte *) ext->r_vaddr);
426 if (abfd->xvec->header_byteorder_big_p != false)
428 intern->r_symndx = (((int) ext->r_bits[0]
429 << RELOC_BITS0_SYMNDX_SH_LEFT_BIG)
430 | ((int) ext->r_bits[1]
431 << RELOC_BITS1_SYMNDX_SH_LEFT_BIG)
432 | ((int) ext->r_bits[2]
433 << RELOC_BITS2_SYMNDX_SH_LEFT_BIG));
434 intern->r_type = ((ext->r_bits[3] & RELOC_BITS3_TYPE_BIG)
435 >> RELOC_BITS3_TYPE_SH_BIG);
436 intern->r_extern = (ext->r_bits[3] & RELOC_BITS3_EXTERN_BIG) != 0;
440 intern->r_symndx = (((int) ext->r_bits[0]
441 << RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE)
442 | ((int) ext->r_bits[1]
443 << RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE)
444 | ((int) ext->r_bits[2]
445 << RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE));
446 intern->r_type = (((ext->r_bits[3] & RELOC_BITS3_TYPE_LITTLE)
447 >> RELOC_BITS3_TYPE_SH_LITTLE)
448 | ((ext->r_bits[3] & RELOC_BITS3_TYPEHI_LITTLE)
449 << RELOC_BITS3_TYPEHI_SH_LITTLE));
450 intern->r_extern = (ext->r_bits[3] & RELOC_BITS3_EXTERN_LITTLE) != 0;
453 /* If this is a MIPS_R_SWITCH reloc, or an internal MIPS_R_RELHI or
454 MIPS_R_RELLO reloc, r_symndx is actually the offset from the
455 reloc address to the base of the difference (see
456 include/coff/mips.h for more details). We copy symndx into the
457 r_offset field so as not to confuse ecoff_slurp_reloc_table in
458 ecoff.c. In adjust_reloc_in we then copy r_offset into the reloc
460 if (intern->r_type == MIPS_R_SWITCH
461 || (! intern->r_extern
462 && (intern->r_type == MIPS_R_RELLO
463 || intern->r_type == MIPS_R_RELHI)))
465 BFD_ASSERT (! intern->r_extern);
466 intern->r_offset = intern->r_symndx;
467 if (intern->r_offset & 0x800000)
468 intern->r_offset -= 0x1000000;
469 intern->r_symndx = RELOC_SECTION_TEXT;
473 /* Swap a reloc out. */
476 mips_ecoff_swap_reloc_out (abfd, intern, dst)
478 const struct internal_reloc *intern;
481 RELOC *ext = (RELOC *) dst;
484 BFD_ASSERT (intern->r_extern
485 || (intern->r_symndx >= 0 && intern->r_symndx <= 12));
487 /* If this is a MIPS_R_SWITCH reloc, or an internal MIPS_R_RELLO or
488 MIPS_R_RELHI reloc, we actually want to write the contents of
489 r_offset out as the symbol index. This undoes the change made by
490 mips_ecoff_swap_reloc_in. */
491 if (intern->r_type != MIPS_R_SWITCH
493 || (intern->r_type != MIPS_R_RELHI
494 && intern->r_type != MIPS_R_RELLO)))
495 r_symndx = intern->r_symndx;
498 BFD_ASSERT (intern->r_symndx == RELOC_SECTION_TEXT);
499 r_symndx = intern->r_offset & 0xffffff;
502 bfd_h_put_32 (abfd, intern->r_vaddr, (bfd_byte *) ext->r_vaddr);
503 if (abfd->xvec->header_byteorder_big_p != false)
505 ext->r_bits[0] = r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_BIG;
506 ext->r_bits[1] = r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_BIG;
507 ext->r_bits[2] = r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_BIG;
508 ext->r_bits[3] = (((intern->r_type << RELOC_BITS3_TYPE_SH_BIG)
509 & RELOC_BITS3_TYPE_BIG)
510 | (intern->r_extern ? RELOC_BITS3_EXTERN_BIG : 0));
514 ext->r_bits[0] = r_symndx >> RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE;
515 ext->r_bits[1] = r_symndx >> RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE;
516 ext->r_bits[2] = r_symndx >> RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE;
517 ext->r_bits[3] = (((intern->r_type << RELOC_BITS3_TYPE_SH_LITTLE)
518 & RELOC_BITS3_TYPE_LITTLE)
519 | ((intern->r_type >> RELOC_BITS3_TYPEHI_SH_LITTLE
520 & RELOC_BITS3_TYPEHI_LITTLE))
521 | (intern->r_extern ? RELOC_BITS3_EXTERN_LITTLE : 0));
525 /* Finish canonicalizing a reloc. Part of this is generic to all
526 ECOFF targets, and that part is in ecoff.c. The rest is done in
527 this backend routine. It must fill in the howto field. */
530 mips_adjust_reloc_in (abfd, intern, rptr)
532 const struct internal_reloc *intern;
535 if (intern->r_type > MIPS_R_SWITCH)
538 if (! intern->r_extern
539 && (intern->r_type == MIPS_R_GPREL
540 || intern->r_type == MIPS_R_LITERAL))
541 rptr->addend += ecoff_data (abfd)->gp;
543 /* If the type is MIPS_R_IGNORE, make sure this is a reference to
544 the absolute section so that the reloc is ignored. */
545 if (intern->r_type == MIPS_R_IGNORE)
546 rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
548 /* If this is a MIPS_R_SWITCH reloc, or an internal MIPS_R_RELHI or
549 MIPS_R_RELLO reloc, we want the addend field of the BFD relocto
550 hold the value which was originally in the symndx field of the
551 internal MIPS ECOFF reloc. This value was copied into
552 intern->r_offset by mips_swap_reloc_in, and here we copy it into
554 if (intern->r_type == MIPS_R_SWITCH
555 || (! intern->r_extern
556 && (intern->r_type == MIPS_R_RELHI
557 || intern->r_type == MIPS_R_RELLO)))
558 rptr->addend = intern->r_offset;
560 rptr->howto = &mips_howto_table[intern->r_type];
563 /* Make any adjustments needed to a reloc before writing it out. None
564 are needed for MIPS. */
567 mips_adjust_reloc_out (abfd, rel, intern)
570 struct internal_reloc *intern;
572 /* For a MIPS_R_SWITCH reloc, or an internal MIPS_R_RELHI or
573 MIPS_R_RELLO reloc, we must copy rel->addend into
574 intern->r_offset. This will then be written out as the symbol
575 index by mips_ecoff_swap_reloc_out. This operation parallels the
576 action of mips_adjust_reloc_in. */
577 if (intern->r_type == MIPS_R_SWITCH
578 || (! intern->r_extern
579 && (intern->r_type == MIPS_R_RELHI
580 || intern->r_type == MIPS_R_RELLO)))
581 intern->r_offset = rel->addend;
584 /* ECOFF relocs are either against external symbols, or against
585 sections. If we are producing relocateable output, and the reloc
586 is against an external symbol, and nothing has given us any
587 additional addend, the resulting reloc will also be against the
588 same symbol. In such a case, we don't want to change anything
589 about the way the reloc is handled, since it will all be done at
590 final link time. Rather than put special case code into
591 bfd_perform_relocation, all the reloc types use this howto
592 function. It just short circuits the reloc if producing
593 relocateable output against an external symbol. */
595 static bfd_reloc_status_type
596 mips_generic_reloc (abfd,
604 arelent *reloc_entry;
607 asection *input_section;
609 char **error_message;
611 if (output_bfd != (bfd *) NULL
612 && (symbol->flags & BSF_SECTION_SYM) == 0
613 && reloc_entry->addend == 0)
615 reloc_entry->address += input_section->output_offset;
619 return bfd_reloc_continue;
622 /* Do a REFHI relocation. This has to be done in combination with a
623 REFLO reloc, because there is a carry from the REFLO to the REFHI.
624 Here we just save the information we need; we do the actual
625 relocation when we see the REFLO. MIPS ECOFF requires that the
626 REFLO immediately follow the REFHI, so this ought to work. */
628 static bfd_byte *mips_refhi_addr;
629 static bfd_vma mips_refhi_addend;
631 static bfd_reloc_status_type
632 mips_refhi_reloc (abfd,
640 arelent *reloc_entry;
643 asection *input_section;
645 char **error_message;
647 bfd_reloc_status_type ret;
650 /* If we're relocating, and this an external symbol, we don't want
651 to change anything. */
652 if (output_bfd != (bfd *) NULL
653 && (symbol->flags & BSF_SECTION_SYM) == 0
654 && reloc_entry->addend == 0)
656 reloc_entry->address += input_section->output_offset;
661 if (bfd_is_und_section (symbol->section)
662 && output_bfd == (bfd *) NULL)
663 ret = bfd_reloc_undefined;
665 if (bfd_is_com_section (symbol->section))
668 relocation = symbol->value;
670 relocation += symbol->section->output_section->vma;
671 relocation += symbol->section->output_offset;
672 relocation += reloc_entry->addend;
674 if (reloc_entry->address > input_section->_cooked_size)
675 return bfd_reloc_outofrange;
677 /* Save the information, and let REFLO do the actual relocation. */
678 mips_refhi_addr = (bfd_byte *) data + reloc_entry->address;
679 mips_refhi_addend = relocation;
681 if (output_bfd != (bfd *) NULL)
682 reloc_entry->address += input_section->output_offset;
687 /* Do a REFLO relocation. This is a straightforward 16 bit inplace
688 relocation; this function exists in order to do the REFHI
689 relocation described above. */
691 static bfd_reloc_status_type
692 mips_reflo_reloc (abfd,
700 arelent *reloc_entry;
703 asection *input_section;
705 char **error_message;
707 if (mips_refhi_addr != (bfd_byte *) NULL)
713 /* Do the REFHI relocation. Note that we actually don't need to
714 know anything about the REFLO itself, except where to find
715 the low 16 bits of the addend needed by the REFHI. */
716 insn = bfd_get_32 (abfd, mips_refhi_addr);
717 vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
719 val = ((insn & 0xffff) << 16) + vallo;
720 val += mips_refhi_addend;
722 /* The low order 16 bits are always treated as a signed value.
723 Therefore, a negative value in the low order bits requires an
724 adjustment in the high order bits. We need to make this
725 adjustment in two ways: once for the bits we took from the
726 data, and once for the bits we are putting back in to the
728 if ((vallo & 0x8000) != 0)
730 if ((val & 0x8000) != 0)
733 insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
734 bfd_put_32 (abfd, insn, mips_refhi_addr);
736 mips_refhi_addr = (bfd_byte *) NULL;
739 /* Now do the REFLO reloc in the usual way. */
740 return mips_generic_reloc (abfd, reloc_entry, symbol, data,
741 input_section, output_bfd, error_message);
744 /* Do a GPREL relocation. This is a 16 bit value which must become
745 the offset from the gp register. */
747 static bfd_reloc_status_type
748 mips_gprel_reloc (abfd,
756 arelent *reloc_entry;
759 asection *input_section;
761 char **error_message;
763 boolean relocateable;
768 /* If we're relocating, and this is an external symbol with no
769 addend, we don't want to change anything. We will only have an
770 addend if this is a newly created reloc, not read from an ECOFF
772 if (output_bfd != (bfd *) NULL
773 && (symbol->flags & BSF_SECTION_SYM) == 0
774 && reloc_entry->addend == 0)
776 reloc_entry->address += input_section->output_offset;
780 if (output_bfd != (bfd *) NULL)
784 relocateable = false;
785 output_bfd = symbol->section->output_section->owner;
788 if (bfd_is_und_section (symbol->section)
789 && relocateable == false)
790 return bfd_reloc_undefined;
792 /* We have to figure out the gp value, so that we can adjust the
793 symbol value correctly. We look up the symbol _gp in the output
794 BFD. If we can't find it, we're stuck. We cache it in the ECOFF
795 target data. We don't need to adjust the symbol value for an
796 external symbol if we are producing relocateable output. */
797 if (ecoff_data (output_bfd)->gp == 0
798 && (relocateable == false
799 || (symbol->flags & BSF_SECTION_SYM) != 0))
801 if (relocateable != false)
803 /* Make up a value. */
804 ecoff_data (output_bfd)->gp =
805 symbol->section->output_section->vma + 0x4000;
813 count = bfd_get_symcount (output_bfd);
814 sym = bfd_get_outsymbols (output_bfd);
816 if (sym == (asymbol **) NULL)
820 for (i = 0; i < count; i++, sym++)
822 register CONST char *name;
824 name = bfd_asymbol_name (*sym);
825 if (*name == '_' && strcmp (name, "_gp") == 0)
827 ecoff_data (output_bfd)->gp = bfd_asymbol_value (*sym);
835 /* Only get the error once. */
836 ecoff_data (output_bfd)->gp = 4;
838 (char *) "GP relative relocation when _gp not defined";
839 return bfd_reloc_dangerous;
844 if (bfd_is_com_section (symbol->section))
847 relocation = symbol->value;
849 relocation += symbol->section->output_section->vma;
850 relocation += symbol->section->output_offset;
852 if (reloc_entry->address > input_section->_cooked_size)
853 return bfd_reloc_outofrange;
855 insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
857 /* Set val to the offset into the section or symbol. */
858 val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
862 /* Adjust val for the final section location and GP value. If we
863 are producing relocateable output, we don't want to do this for
864 an external symbol. */
865 if (relocateable == false
866 || (symbol->flags & BSF_SECTION_SYM) != 0)
867 val += relocation - ecoff_data (output_bfd)->gp;
869 insn = (insn &~ 0xffff) | (val & 0xffff);
870 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
872 if (relocateable != false)
873 reloc_entry->address += input_section->output_offset;
875 /* Make sure it fit in 16 bits. */
876 if (val >= 0x8000 && val < 0xffff8000)
877 return bfd_reloc_overflow;
882 /* Do a RELHI relocation. We do this in conjunction with a RELLO
883 reloc, just as REFHI and REFLO are done together. RELHI and RELLO
884 are Cygnus extensions used when generating position independent
885 code for embedded systems. */
887 static bfd_byte *mips_relhi_addr;
888 static bfd_vma mips_relhi_addend;
890 static bfd_reloc_status_type
891 mips_relhi_reloc (abfd,
899 arelent *reloc_entry;
902 asection *input_section;
904 char **error_message;
906 bfd_reloc_status_type ret;
909 /* If this is a reloc against a section symbol, then it is correct
910 in the object file. The only time we want to change this case is
911 when we are relaxing, and that is handled entirely by
912 mips_relocate_section and never calls this function. */
913 if ((symbol->flags & BSF_SECTION_SYM) != 0)
915 if (output_bfd != (bfd *) NULL)
916 reloc_entry->address += input_section->output_offset;
920 /* This is an external symbol. If we're relocating, we don't want
921 to change anything. */
922 if (output_bfd != (bfd *) NULL)
924 reloc_entry->address += input_section->output_offset;
929 if (bfd_is_und_section (symbol->section)
930 && output_bfd == (bfd *) NULL)
931 ret = bfd_reloc_undefined;
933 if (bfd_is_com_section (symbol->section))
936 relocation = symbol->value;
938 relocation += symbol->section->output_section->vma;
939 relocation += symbol->section->output_offset;
940 relocation += reloc_entry->addend;
942 if (reloc_entry->address > input_section->_cooked_size)
943 return bfd_reloc_outofrange;
945 /* Save the information, and let RELLO do the actual relocation. */
946 mips_relhi_addr = (bfd_byte *) data + reloc_entry->address;
947 mips_relhi_addend = relocation;
949 if (output_bfd != (bfd *) NULL)
950 reloc_entry->address += input_section->output_offset;
955 /* Do a RELLO relocation. This is a straightforward 16 bit PC
956 relative relocation; this function exists in order to do the RELHI
957 relocation described above. */
959 static bfd_reloc_status_type
960 mips_rello_reloc (abfd,
968 arelent *reloc_entry;
971 asection *input_section;
973 char **error_message;
975 if (mips_relhi_addr != (bfd_byte *) NULL)
981 /* Do the RELHI relocation. Note that we actually don't need to
982 know anything about the RELLO itself, except where to find
983 the low 16 bits of the addend needed by the RELHI. */
984 insn = bfd_get_32 (abfd, mips_relhi_addr);
985 vallo = (bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address)
987 val = ((insn & 0xffff) << 16) + vallo;
988 val += mips_relhi_addend;
990 /* If the symbol is defined, make val PC relative. If the
991 symbol is not defined we don't want to do this, because we
992 don't want the value in the object file to incorporate the
993 address of the reloc. */
994 if (! bfd_is_und_section (bfd_get_section (symbol))
995 && ! bfd_is_com_section (bfd_get_section (symbol)))
996 val -= (input_section->output_section->vma
997 + input_section->output_offset
998 + reloc_entry->address);
1000 /* The low order 16 bits are always treated as a signed value.
1001 Therefore, a negative value in the low order bits requires an
1002 adjustment in the high order bits. We need to make this
1003 adjustment in two ways: once for the bits we took from the
1004 data, and once for the bits we are putting back in to the
1006 if ((vallo & 0x8000) != 0)
1008 if ((val & 0x8000) != 0)
1011 insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
1012 bfd_put_32 (abfd, insn, mips_relhi_addr);
1014 mips_relhi_addr = (bfd_byte *) NULL;
1017 /* If this is a reloc against a section symbol, then it is correct
1018 in the object file. The only time we want to change this case is
1019 when we are relaxing, and that is handled entirely by
1020 mips_relocate_section and never calls this function. */
1021 if ((symbol->flags & BSF_SECTION_SYM) != 0)
1023 if (output_bfd != (bfd *) NULL)
1024 reloc_entry->address += input_section->output_offset;
1025 return bfd_reloc_ok;
1028 /* bfd_perform_relocation does not handle pcrel_offset relocations
1029 correctly when generating a relocateable file, so handle them
1031 if (output_bfd != (bfd *) NULL)
1033 reloc_entry->address += input_section->output_offset;
1034 return bfd_reloc_ok;
1037 /* Now do the RELLO reloc in the usual way. */
1038 return mips_generic_reloc (abfd, reloc_entry, symbol, data,
1039 input_section, output_bfd, error_message);
1042 /* This is the special function for the MIPS_R_SWITCH reloc. This
1043 special reloc is normally correct in the object file, and only
1044 requires special handling when relaxing. We don't want
1045 bfd_perform_relocation to tamper with it at all. */
1048 static bfd_reloc_status_type
1049 mips_switch_reloc (abfd,
1057 arelent *reloc_entry;
1060 asection *input_section;
1062 char **error_message;
1064 return bfd_reloc_ok;
1067 /* Get the howto structure for a generic reloc type. */
1069 static reloc_howto_type *
1070 mips_bfd_reloc_type_lookup (abfd, code)
1072 bfd_reloc_code_real_type code;
1079 mips_type = MIPS_R_REFHALF;
1082 case BFD_RELOC_CTOR:
1083 mips_type = MIPS_R_REFWORD;
1085 case BFD_RELOC_MIPS_JMP:
1086 mips_type = MIPS_R_JMPADDR;
1088 case BFD_RELOC_HI16_S:
1089 mips_type = MIPS_R_REFHI;
1091 case BFD_RELOC_LO16:
1092 mips_type = MIPS_R_REFLO;
1094 case BFD_RELOC_MIPS_GPREL:
1095 mips_type = MIPS_R_GPREL;
1097 case BFD_RELOC_MIPS_LITERAL:
1098 mips_type = MIPS_R_LITERAL;
1100 case BFD_RELOC_16_PCREL_S2:
1101 mips_type = MIPS_R_PCREL16;
1103 case BFD_RELOC_PCREL_HI16_S:
1104 mips_type = MIPS_R_RELHI;
1106 case BFD_RELOC_PCREL_LO16:
1107 mips_type = MIPS_R_RELLO;
1109 case BFD_RELOC_GPREL32:
1110 mips_type = MIPS_R_SWITCH;
1113 return (reloc_howto_type *) NULL;
1116 return &mips_howto_table[mips_type];
1119 /* A helper routine for mips_relocate_section which handles the REFHI
1120 and RELHI relocations. The REFHI relocation must be followed by a
1121 REFLO relocation (and RELHI by a RELLO), and the addend used is
1122 formed from the addends of both instructions. */
1125 mips_relocate_hi (refhi, reflo, input_bfd, input_section, contents, adjust,
1127 struct internal_reloc *refhi;
1128 struct internal_reloc *reflo;
1130 asection *input_section;
1138 unsigned long vallo;
1140 insn = bfd_get_32 (input_bfd,
1141 contents + adjust + refhi->r_vaddr - input_section->vma);
1142 vallo = (bfd_get_32 (input_bfd,
1143 contents + adjust + reflo->r_vaddr - input_section->vma)
1145 val = ((insn & 0xffff) << 16) + vallo;
1148 /* The low order 16 bits are always treated as a signed value.
1149 Therefore, a negative value in the low order bits requires an
1150 adjustment in the high order bits. We need to make this
1151 adjustment in two ways: once for the bits we took from the data,
1152 and once for the bits we are putting back in to the data. */
1153 if ((vallo & 0x8000) != 0)
1157 val -= (input_section->output_section->vma
1158 + input_section->output_offset
1159 + (reflo->r_vaddr - input_section->vma + adjust));
1161 if ((val & 0x8000) != 0)
1164 insn = (insn &~ 0xffff) | ((val >> 16) & 0xffff);
1165 bfd_put_32 (input_bfd, (bfd_vma) insn,
1166 contents + adjust + refhi->r_vaddr - input_section->vma);
1169 /* Relocate a section while linking a MIPS ECOFF file. */
1172 mips_relocate_section (output_bfd, info, input_bfd, input_section,
1173 contents, external_relocs)
1175 struct bfd_link_info *info;
1177 asection *input_section;
1179 PTR external_relocs;
1181 asection **symndx_to_section;
1182 struct ecoff_link_hash_entry **sym_hashes;
1184 boolean gp_undefined;
1187 struct external_reloc *ext_rel;
1188 struct external_reloc *ext_rel_end;
1191 struct internal_reloc lo_int_rel;
1193 BFD_ASSERT (input_bfd->xvec->header_byteorder_big_p
1194 == output_bfd->xvec->header_byteorder_big_p);
1196 /* We keep a table mapping the symndx found in an internal reloc to
1197 the appropriate section. This is faster than looking up the
1198 section by name each time. */
1199 symndx_to_section = ecoff_data (input_bfd)->symndx_to_section;
1200 if (symndx_to_section == (asection **) NULL)
1202 symndx_to_section = ((asection **)
1203 bfd_alloc (input_bfd,
1205 * sizeof (asection *))));
1206 if (!symndx_to_section)
1208 bfd_set_error (bfd_error_no_memory);
1212 symndx_to_section[RELOC_SECTION_NONE] = NULL;
1213 symndx_to_section[RELOC_SECTION_TEXT] =
1214 bfd_get_section_by_name (input_bfd, ".text");
1215 symndx_to_section[RELOC_SECTION_RDATA] =
1216 bfd_get_section_by_name (input_bfd, ".rdata");
1217 symndx_to_section[RELOC_SECTION_DATA] =
1218 bfd_get_section_by_name (input_bfd, ".data");
1219 symndx_to_section[RELOC_SECTION_SDATA] =
1220 bfd_get_section_by_name (input_bfd, ".sdata");
1221 symndx_to_section[RELOC_SECTION_SBSS] =
1222 bfd_get_section_by_name (input_bfd, ".sbss");
1223 symndx_to_section[RELOC_SECTION_BSS] =
1224 bfd_get_section_by_name (input_bfd, ".bss");
1225 symndx_to_section[RELOC_SECTION_INIT] =
1226 bfd_get_section_by_name (input_bfd, ".init");
1227 symndx_to_section[RELOC_SECTION_LIT8] =
1228 bfd_get_section_by_name (input_bfd, ".lit8");
1229 symndx_to_section[RELOC_SECTION_LIT4] =
1230 bfd_get_section_by_name (input_bfd, ".lit4");
1231 symndx_to_section[RELOC_SECTION_XDATA] = NULL;
1232 symndx_to_section[RELOC_SECTION_PDATA] = NULL;
1233 symndx_to_section[RELOC_SECTION_FINI] =
1234 bfd_get_section_by_name (input_bfd, ".fini");
1235 symndx_to_section[RELOC_SECTION_LITA] = NULL;
1236 symndx_to_section[RELOC_SECTION_ABS] = NULL;
1238 ecoff_data (input_bfd)->symndx_to_section = symndx_to_section;
1241 sym_hashes = ecoff_data (input_bfd)->sym_hashes;
1243 gp = ecoff_data (output_bfd)->gp;
1245 gp_undefined = true;
1247 gp_undefined = false;
1253 if (ecoff_section_data (input_bfd, input_section) == NULL)
1256 offsets = ecoff_section_data (input_bfd, input_section)->offsets;
1258 ext_rel = (struct external_reloc *) external_relocs;
1259 ext_rel_end = ext_rel + input_section->reloc_count;
1260 for (i = 0; ext_rel < ext_rel_end; ext_rel++, i++)
1262 struct internal_reloc int_rel;
1264 reloc_howto_type *howto;
1265 struct ecoff_link_hash_entry *h = NULL;
1268 bfd_reloc_status_type r;
1271 mips_ecoff_swap_reloc_in (input_bfd, (PTR) ext_rel, &int_rel);
1274 int_rel = lo_int_rel;
1278 BFD_ASSERT (int_rel.r_type
1279 < sizeof mips_howto_table / sizeof mips_howto_table[0]);
1281 /* The REFHI and RELHI relocs requires special handling. they
1282 must be followed by a REFLO or RELLO reloc, respectively, and
1283 the addend is formed from both relocs. */
1284 if (int_rel.r_type == MIPS_R_REFHI
1285 || int_rel.r_type == MIPS_R_RELHI)
1287 BFD_ASSERT ((ext_rel + 1) < ext_rel_end);
1288 mips_ecoff_swap_reloc_in (input_bfd, (PTR) (ext_rel + 1),
1290 BFD_ASSERT ((lo_int_rel.r_type
1291 == (int_rel.r_type == MIPS_R_REFHI
1294 && int_rel.r_extern == lo_int_rel.r_extern
1295 && int_rel.r_symndx == lo_int_rel.r_symndx);
1299 howto = &mips_howto_table[int_rel.r_type];
1301 /* The SWITCH reloc must be handled specially. This reloc is
1302 marks the location of a difference between two portions of an
1303 object file. The symbol index does not reference a symbol,
1304 but is actually the offset from the reloc to the subtrahend
1305 of the difference. This reloc is correct in the object file,
1306 and needs no further adjustment, unless we are relaxing. If
1307 we are relaxing, we may have to add in an offset. Since no
1308 symbols are involved in this reloc, we handle it completely
1310 if (int_rel.r_type == MIPS_R_SWITCH)
1315 r = _bfd_relocate_contents (howto, input_bfd,
1316 (bfd_vma) offsets[i],
1320 - input_section->vma));
1321 BFD_ASSERT (r == bfd_reloc_ok);
1327 if (int_rel.r_extern)
1329 h = sym_hashes[int_rel.r_symndx];
1330 /* If h is NULL, that means that there is a reloc against an
1331 external symbol which we thought was just a debugging
1332 symbol. This should not happen. */
1333 if (h == (struct ecoff_link_hash_entry *) NULL)
1338 if (int_rel.r_symndx < 0 || int_rel.r_symndx >= NUM_RELOC_SECTIONS)
1341 s = symndx_to_section[int_rel.r_symndx];
1343 if (s == (asection *) NULL)
1347 /* The GPREL reloc uses an addend: the difference in the GP
1349 if (int_rel.r_type != MIPS_R_GPREL
1350 && int_rel.r_type != MIPS_R_LITERAL)
1356 if (! ((*info->callbacks->reloc_dangerous)
1357 (info, "GP relative relocation when GP not defined",
1358 input_bfd, input_section,
1359 int_rel.r_vaddr - input_section->vma)))
1361 /* Only give the error once per link. */
1362 ecoff_data (output_bfd)->gp = gp = 4;
1363 gp_undefined = false;
1365 if (! int_rel.r_extern)
1367 /* This is a relocation against a section. The current
1368 addend in the instruction is the difference between
1369 INPUT_SECTION->vma and the GP value of INPUT_BFD. We
1370 must change this to be the difference between the
1371 final definition (which will end up in RELOCATION)
1372 and the GP value of OUTPUT_BFD (which is in GP). */
1373 addend = ecoff_data (input_bfd)->gp - gp;
1375 else if (! info->relocateable
1376 || h->root.type == bfd_link_hash_defined
1377 || h->root.type == bfd_link_hash_defweak)
1379 /* This is a relocation against a defined symbol. The
1380 current addend in the instruction is simply the
1381 desired offset into the symbol (normally zero). We
1382 are going to change this into a relocation against a
1383 defined symbol, so we want the instruction to hold
1384 the difference between the final definition of the
1385 symbol (which will end up in RELOCATION) and the GP
1386 value of OUTPUT_BFD (which is in GP). */
1391 /* This is a relocation against an undefined or common
1392 symbol. The current addend in the instruction is
1393 simply the desired offset into the symbol (normally
1394 zero). We are generating relocateable output, and we
1395 aren't going to define this symbol, so we just leave
1396 the instruction alone. */
1401 /* If we are relaxing, mips_relax_section may have set
1402 offsets[i] to some value. A value of 1 means we must expand
1403 a PC relative branch into a multi-instruction of sequence,
1404 and any other value is an addend. */
1408 BFD_ASSERT (! info->relocateable);
1409 BFD_ASSERT (int_rel.r_type == MIPS_R_PCREL16
1410 || int_rel.r_type == MIPS_R_RELHI
1411 || int_rel.r_type == MIPS_R_RELLO);
1412 if (offsets[i] != 1)
1413 addend += offsets[i];
1418 BFD_ASSERT (int_rel.r_extern
1419 && int_rel.r_type == MIPS_R_PCREL16);
1421 /* Move the rest of the instructions up. */
1425 - input_section->vma);
1426 memmove (here + PCREL16_EXPANSION_ADJUSTMENT, here,
1427 (size_t) (input_section->_raw_size
1428 - (int_rel.r_vaddr - input_section->vma)));
1430 /* Generate the new instructions. */
1431 if (! mips_relax_pcrel16 (info, input_bfd, input_section,
1433 (input_section->output_section->vma
1434 + input_section->output_offset
1436 - input_section->vma)
1440 /* We must adjust everything else up a notch. */
1441 adjust += PCREL16_EXPANSION_ADJUSTMENT;
1443 /* mips_relax_pcrel16 handles all the details of this
1449 /* If we are relaxing, and this is a reloc against the .text
1450 segment, we may need to adjust it if some branches have been
1451 expanded. The reloc types which are likely to occur in the
1452 .text section are handled efficiently by mips_relax_section,
1453 and thus do not need to be handled here. */
1454 if (ecoff_data (input_bfd)->debug_info.adjust != NULL
1455 && ! int_rel.r_extern
1456 && int_rel.r_symndx == RELOC_SECTION_TEXT
1457 && (strcmp (bfd_get_section_name (input_bfd, input_section),
1459 || (int_rel.r_type != MIPS_R_PCREL16
1460 && int_rel.r_type != MIPS_R_SWITCH
1461 && int_rel.r_type != MIPS_R_RELHI
1462 && int_rel.r_type != MIPS_R_RELLO)))
1465 struct ecoff_value_adjust *a;
1467 /* We need to get the addend so that we know whether we need
1468 to adjust the address. */
1469 BFD_ASSERT (int_rel.r_type == MIPS_R_REFWORD);
1471 adr = bfd_get_32 (input_bfd,
1475 - input_section->vma));
1477 for (a = ecoff_data (input_bfd)->debug_info.adjust;
1478 a != (struct ecoff_value_adjust *) NULL;
1481 if (adr >= a->start && adr < a->end)
1482 addend += a->adjust;
1486 if (info->relocateable)
1488 /* We are generating relocateable output, and must convert
1489 the existing reloc. */
1490 if (int_rel.r_extern)
1492 if ((h->root.type == bfd_link_hash_defined
1493 || h->root.type == bfd_link_hash_defweak)
1494 && ! bfd_is_abs_section (h->root.u.def.section))
1498 /* This symbol is defined in the output. Convert
1499 the reloc from being against the symbol to being
1500 against the section. */
1502 /* Clear the r_extern bit. */
1503 int_rel.r_extern = 0;
1505 /* Compute a new r_symndx value. */
1506 s = h->root.u.def.section;
1507 name = bfd_get_section_name (output_bfd,
1510 int_rel.r_symndx = -1;
1514 if (strcmp (name, ".bss") == 0)
1515 int_rel.r_symndx = RELOC_SECTION_BSS;
1518 if (strcmp (name, ".data") == 0)
1519 int_rel.r_symndx = RELOC_SECTION_DATA;
1522 if (strcmp (name, ".fini") == 0)
1523 int_rel.r_symndx = RELOC_SECTION_FINI;
1526 if (strcmp (name, ".init") == 0)
1527 int_rel.r_symndx = RELOC_SECTION_INIT;
1530 if (strcmp (name, ".lit8") == 0)
1531 int_rel.r_symndx = RELOC_SECTION_LIT8;
1532 else if (strcmp (name, ".lit4") == 0)
1533 int_rel.r_symndx = RELOC_SECTION_LIT4;
1536 if (strcmp (name, ".rdata") == 0)
1537 int_rel.r_symndx = RELOC_SECTION_RDATA;
1540 if (strcmp (name, ".sdata") == 0)
1541 int_rel.r_symndx = RELOC_SECTION_SDATA;
1542 else if (strcmp (name, ".sbss") == 0)
1543 int_rel.r_symndx = RELOC_SECTION_SBSS;
1546 if (strcmp (name, ".text") == 0)
1547 int_rel.r_symndx = RELOC_SECTION_TEXT;
1551 if (int_rel.r_symndx == -1)
1554 /* Add the section VMA and the symbol value. */
1555 relocation = (h->root.u.def.value
1556 + s->output_section->vma
1557 + s->output_offset);
1559 /* For a PC relative relocation, the object file
1560 currently holds just the addend. We must adjust
1561 by the address to get the right value. */
1562 if (howto->pc_relative)
1564 relocation -= int_rel.r_vaddr - input_section->vma;
1566 /* If we are converting a RELHI or RELLO reloc
1567 from being against an external symbol to
1568 being against a section, we must put a
1569 special value into the r_offset field. This
1570 value is the old addend. The r_offset for
1571 both the RELOHI and RELLO relocs are the
1572 same, and we set both when we see RELHI. */
1573 if (int_rel.r_type == MIPS_R_RELHI)
1577 addhi = bfd_get_32 (input_bfd,
1581 - input_section->vma));
1587 addlo = bfd_get_32 (input_bfd,
1590 + lo_int_rel.r_vaddr
1591 - input_section->vma));
1596 int_rel.r_offset = addhi + addlo;
1597 lo_int_rel.r_offset = int_rel.r_offset;
1605 /* Change the symndx value to the right one for the
1607 int_rel.r_symndx = h->indx;
1608 if (int_rel.r_symndx == -1)
1610 /* This symbol is not being written out. */
1611 if (! ((*info->callbacks->unattached_reloc)
1612 (info, h->root.root.string, input_bfd,
1614 int_rel.r_vaddr - input_section->vma)))
1616 int_rel.r_symndx = 0;
1623 /* This is a relocation against a section. Adjust the
1624 value by the amount the section moved. */
1625 relocation = (s->output_section->vma
1630 relocation += addend;
1633 /* Adjust a PC relative relocation by removing the reference
1634 to the original address in the section and including the
1635 reference to the new address. However, external RELHI
1636 and RELLO relocs are PC relative, but don't include any
1637 reference to the address. The addend is merely an
1639 if (howto->pc_relative
1640 && (! int_rel.r_extern
1641 || (int_rel.r_type != MIPS_R_RELHI
1642 && int_rel.r_type != MIPS_R_RELLO)))
1643 relocation -= (input_section->output_section->vma
1644 + input_section->output_offset
1645 - input_section->vma);
1647 /* Adjust the contents. */
1648 if (relocation == 0)
1652 if (int_rel.r_type != MIPS_R_REFHI
1653 && int_rel.r_type != MIPS_R_RELHI)
1654 r = _bfd_relocate_contents (howto, input_bfd, relocation,
1658 - input_section->vma));
1661 mips_relocate_hi (&int_rel, &lo_int_rel,
1662 input_bfd, input_section, contents,
1664 int_rel.r_type == MIPS_R_RELHI);
1669 /* Adjust the reloc address. */
1670 int_rel.r_vaddr += (input_section->output_section->vma
1671 + input_section->output_offset
1672 - input_section->vma);
1674 /* Save the changed reloc information. */
1675 mips_ecoff_swap_reloc_out (input_bfd, &int_rel, (PTR) ext_rel);
1679 /* We are producing a final executable. */
1680 if (int_rel.r_extern)
1682 /* This is a reloc against a symbol. */
1683 if (h->root.type == bfd_link_hash_defined
1684 || h->root.type == bfd_link_hash_defweak)
1688 hsec = h->root.u.def.section;
1689 relocation = (h->root.u.def.value
1690 + hsec->output_section->vma
1691 + hsec->output_offset);
1695 if (! ((*info->callbacks->undefined_symbol)
1696 (info, h->root.root.string, input_bfd,
1698 int_rel.r_vaddr - input_section->vma)))
1705 /* This is a reloc against a section. */
1706 relocation = (s->output_section->vma
1710 /* A PC relative reloc is already correct in the object
1711 file. Make it look like a pcrel_offset relocation by
1712 adding in the start address. */
1713 if (howto->pc_relative)
1715 if (int_rel.r_type != MIPS_R_RELHI)
1716 relocation += int_rel.r_vaddr + adjust;
1718 relocation += lo_int_rel.r_vaddr + adjust;
1722 if (int_rel.r_type != MIPS_R_REFHI
1723 && int_rel.r_type != MIPS_R_RELHI)
1724 r = _bfd_final_link_relocate (howto,
1729 - input_section->vma
1735 mips_relocate_hi (&int_rel, &lo_int_rel, input_bfd,
1736 input_section, contents, adjust,
1738 int_rel.r_type == MIPS_R_RELHI);
1743 /* MIPS_R_JMPADDR requires peculiar overflow detection. The
1744 instruction provides a 28 bit address (the two lower bits are
1745 implicit zeroes) which is combined with the upper four bits
1746 of the instruction address. */
1747 if (r == bfd_reloc_ok
1748 && int_rel.r_type == MIPS_R_JMPADDR
1751 + (int_rel.r_extern ? 0 : s->vma))
1753 != ((input_section->output_section->vma
1754 + input_section->output_offset
1755 + (int_rel.r_vaddr - input_section->vma)
1758 r = bfd_reloc_overflow;
1760 if (r != bfd_reloc_ok)
1765 case bfd_reloc_outofrange:
1767 case bfd_reloc_overflow:
1771 if (int_rel.r_extern)
1772 name = h->root.root.string;
1774 name = bfd_section_name (input_bfd, s);
1775 if (! ((*info->callbacks->reloc_overflow)
1776 (info, name, howto->name, (bfd_vma) 0,
1777 input_bfd, input_section,
1778 int_rel.r_vaddr - input_section->vma)))
1789 /* Read in the relocs for a section. */
1792 mips_read_relocs (abfd, sec)
1796 struct ecoff_section_tdata *section_tdata;
1798 section_tdata = ecoff_section_data (abfd, sec);
1799 if (section_tdata == (struct ecoff_section_tdata *) NULL)
1802 (PTR) bfd_alloc_by_size_t (abfd, sizeof (struct ecoff_section_tdata));
1803 if (sec->used_by_bfd == NULL)
1805 bfd_set_error (bfd_error_no_memory);
1809 section_tdata = ecoff_section_data (abfd, sec);
1810 section_tdata->external_relocs = NULL;
1811 section_tdata->contents = NULL;
1812 section_tdata->offsets = NULL;
1815 if (section_tdata->external_relocs == NULL)
1817 bfd_size_type external_relocs_size;
1819 external_relocs_size = (ecoff_backend (abfd)->external_reloc_size
1820 * sec->reloc_count);
1822 section_tdata->external_relocs =
1823 (PTR) bfd_alloc (abfd, external_relocs_size);
1824 if (section_tdata->external_relocs == NULL && external_relocs_size != 0)
1826 bfd_set_error (bfd_error_no_memory);
1830 if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
1831 || (bfd_read (section_tdata->external_relocs, 1,
1832 external_relocs_size, abfd)
1833 != external_relocs_size))
1840 /* Relax a section when linking a MIPS ECOFF file. This is used for
1841 embedded PIC code, which always uses PC relative branches which
1842 only have an 18 bit range on MIPS. If a branch is not in range, we
1843 generate a long instruction sequence to compensate. Each time we
1844 find a branch to expand, we have to check all the others again to
1845 make sure they are still in range. This is slow, but it only has
1846 to be done when -relax is passed to the linker.
1848 This routine figures out which branches need to expand; the actual
1849 expansion is done in mips_relocate_section when the section
1850 contents are relocated. The information is stored in the offsets
1851 field of the ecoff_section_tdata structure. An offset of 1 means
1852 that the branch must be expanded into a multi-instruction PC
1853 relative branch (such an offset will only occur for a PC relative
1854 branch to an external symbol). Any other offset must be a multiple
1855 of four, and is the amount to change the branch by (such an offset
1856 will only occur for a PC relative branch within the same section).
1858 We do not modify the section relocs or contents themselves so that
1859 if memory usage becomes an issue we can discard them and read them
1860 again. The only information we must save in memory between this
1861 routine and the mips_relocate_section routine is the table of
1865 mips_relax_section (abfd, sec, info, again)
1868 struct bfd_link_info *info;
1871 struct ecoff_section_tdata *section_tdata;
1872 bfd_byte *contents = NULL;
1874 struct external_reloc *ext_rel;
1875 struct external_reloc *ext_rel_end;
1878 /* Assume we are not going to need another pass. */
1881 /* If we are not generating an ECOFF file, this is much too
1882 confusing to deal with. */
1883 if (info->hash->creator->flavour != bfd_get_flavour (abfd))
1886 /* If there are no relocs, there is nothing to do. */
1887 if (sec->reloc_count == 0)
1890 /* We are only interested in PC relative relocs, and why would there
1891 ever be one from anything but the .text section? */
1892 if (strcmp (bfd_get_section_name (abfd, sec), ".text") != 0)
1895 /* Read in the relocs, if we haven't already got them. */
1896 section_tdata = ecoff_section_data (abfd, sec);
1897 if (section_tdata == (struct ecoff_section_tdata *) NULL
1898 || section_tdata->external_relocs == NULL)
1900 if (! mips_read_relocs (abfd, sec))
1902 section_tdata = ecoff_section_data (abfd, sec);
1905 if (sec->_cooked_size == 0)
1907 /* We must initialize _cooked_size only the first time we are
1909 sec->_cooked_size = sec->_raw_size;
1912 contents = section_tdata->contents;
1913 offsets = section_tdata->offsets;
1915 /* Look for any external PC relative relocs. Internal PC relative
1916 relocs are already correct in the object file, so they certainly
1917 can not overflow. */
1918 ext_rel = (struct external_reloc *) section_tdata->external_relocs;
1919 ext_rel_end = ext_rel + sec->reloc_count;
1920 for (i = 0; ext_rel < ext_rel_end; ext_rel++, i++)
1922 struct internal_reloc int_rel;
1923 struct ecoff_link_hash_entry *h;
1925 bfd_signed_vma relocation;
1926 struct external_reloc *adj_ext_rel;
1928 unsigned long ext_count;
1929 struct ecoff_link_hash_entry **adj_h_ptr;
1930 struct ecoff_link_hash_entry **adj_h_ptr_end;
1931 struct ecoff_value_adjust *adjust;
1933 /* If we have already expanded this reloc, we certainly don't
1934 need to do it again. */
1935 if (offsets != (long *) NULL && offsets[i] == 1)
1938 /* Quickly check that this reloc is external PCREL16. */
1939 if (abfd->xvec->header_byteorder_big_p)
1941 if ((ext_rel->r_bits[3] & RELOC_BITS3_EXTERN_BIG) == 0
1942 || (((ext_rel->r_bits[3] & RELOC_BITS3_TYPE_BIG)
1943 >> RELOC_BITS3_TYPE_SH_BIG)
1949 if ((ext_rel->r_bits[3] & RELOC_BITS3_EXTERN_LITTLE) == 0
1950 || (((ext_rel->r_bits[3] & RELOC_BITS3_TYPE_LITTLE)
1951 >> RELOC_BITS3_TYPE_SH_LITTLE)
1956 mips_ecoff_swap_reloc_in (abfd, (PTR) ext_rel, &int_rel);
1958 h = ecoff_data (abfd)->sym_hashes[int_rel.r_symndx];
1959 if (h == (struct ecoff_link_hash_entry *) NULL)
1962 if (h->root.type != bfd_link_hash_defined
1963 && h->root.type != bfd_link_hash_defweak)
1965 /* Just ignore undefined symbols. These will presumably
1966 generate an error later in the link. */
1970 /* Get the value of the symbol. */
1971 hsec = h->root.u.def.section;
1972 relocation = (h->root.u.def.value
1973 + hsec->output_section->vma
1974 + hsec->output_offset);
1976 /* Subtract out the current address. */
1977 relocation -= (sec->output_section->vma
1978 + sec->output_offset
1979 + (int_rel.r_vaddr - sec->vma));
1981 /* The addend is stored in the object file. In the normal case
1982 of ``bal symbol'', the addend will be -4. It will only be
1983 different in the case of ``bal symbol+constant''. To avoid
1984 always reading in the section contents, we don't check the
1985 addend in the object file (we could easily check the contents
1986 if we happen to have already read them in, but I fear that
1987 this could be confusing). This means we will screw up if
1988 there is a branch to a symbol that is in range, but added to
1989 a constant which puts it out of range; in such a case the
1990 link will fail with a reloc overflow error. Since the
1991 compiler will never generate such code, it should be easy
1992 enough to work around it by changing the assembly code in the
1996 /* Now RELOCATION is the number we want to put in the object
1997 file. See whether it fits. */
1998 if (relocation >= -0x20000 && relocation < 0x20000)
2001 /* Now that we know this reloc needs work, which will rarely
2002 happen, go ahead and grab the section contents. */
2003 if (contents == (bfd_byte *) NULL)
2005 if (info->keep_memory)
2006 contents = (bfd_byte *) bfd_alloc (abfd, sec->_raw_size);
2008 contents = (bfd_byte *) malloc ((size_t) sec->_raw_size);
2009 if (contents == (bfd_byte *) NULL)
2011 bfd_set_error (bfd_error_no_memory);
2014 if (! bfd_get_section_contents (abfd, sec, (PTR) contents,
2015 (file_ptr) 0, sec->_raw_size))
2017 if (info->keep_memory)
2018 section_tdata->contents = contents;
2021 /* We only support changing the bal instruction. It would be
2022 possible to handle other PC relative branches, but some of
2023 them (the conditional branches) would require a different
2024 length instruction sequence which would complicate both this
2025 routine and mips_relax_pcrel16. It could be written if
2026 somebody felt it were important. Ignoring this reloc will
2027 presumably cause a reloc overflow error later on. */
2028 if (bfd_get_32 (abfd, contents + int_rel.r_vaddr - sec->vma)
2029 != 0x0411ffff) /* bgezal $0,. == bal . */
2032 /* Bother. We need to expand this reloc, and we will need to
2033 make another relaxation pass since this change may put other
2034 relocs out of range. We need to examine the local branches
2035 and we need to allocate memory to hold the offsets we must
2036 add to them. We also need to adjust the values of all
2037 symbols in the object file following this location. */
2039 sec->_cooked_size += PCREL16_EXPANSION_ADJUSTMENT;
2042 if (offsets == (long *) NULL)
2046 size = sec->reloc_count * sizeof (long);
2047 offsets = (long *) bfd_alloc_by_size_t (abfd, size);
2048 if (offsets == (long *) NULL)
2050 bfd_set_error (bfd_error_no_memory);
2053 memset (offsets, 0, size);
2054 section_tdata->offsets = offsets;
2059 /* Now look for all PC relative references that cross this reloc
2060 and adjust their offsets. */
2061 adj_ext_rel = (struct external_reloc *) section_tdata->external_relocs;
2062 for (adj_i = 0; adj_ext_rel < ext_rel_end; adj_ext_rel++, adj_i++)
2064 struct internal_reloc adj_int_rel;
2065 bfd_vma start, stop;
2068 mips_ecoff_swap_reloc_in (abfd, (PTR) adj_ext_rel, &adj_int_rel);
2070 if (adj_int_rel.r_type == MIPS_R_PCREL16)
2074 /* We only care about local references. External ones
2075 will be relocated correctly anyhow. */
2076 if (adj_int_rel.r_extern)
2079 /* We are only interested in a PC relative reloc within
2080 this section. FIXME: Cross section PC relative
2081 relocs may not be handled correctly; does anybody
2083 if (adj_int_rel.r_symndx != RELOC_SECTION_TEXT)
2086 start = adj_int_rel.r_vaddr;
2088 insn = bfd_get_32 (abfd,
2089 contents + adj_int_rel.r_vaddr - sec->vma);
2091 stop = (insn & 0xffff) << 2;
2092 if ((stop & 0x20000) != 0)
2094 stop += adj_int_rel.r_vaddr + 4;
2096 else if (adj_int_rel.r_type == MIPS_R_RELHI)
2098 struct internal_reloc rello;
2101 /* The next reloc must be MIPS_R_RELLO, and we handle
2103 BFD_ASSERT (adj_ext_rel + 1 < ext_rel_end);
2105 mips_ecoff_swap_reloc_in (abfd, (PTR) (adj_ext_rel + 1), &rello);
2107 BFD_ASSERT (rello.r_type == MIPS_R_RELLO);
2109 addhi = bfd_get_32 (abfd,
2110 contents + adj_int_rel.r_vaddr - sec->vma);
2116 addlo = bfd_get_32 (abfd, contents + rello.r_vaddr - sec->vma);
2121 if (adj_int_rel.r_extern)
2123 /* The value we want here is
2124 sym - RELLOaddr + addend
2125 which we can express as
2126 sym - (RELLOaddr - addend)
2127 Therefore if we are expanding the area between
2128 RELLOaddr and RELLOaddr - addend we must adjust
2129 the addend. This is admittedly ambiguous, since
2130 we might mean (sym + addend) - RELLOaddr, but in
2131 practice we don't, and there is no way to handle
2132 that case correctly since at this point we have
2133 no idea whether any reloc is being expanded
2134 between sym and sym + addend. */
2135 start = rello.r_vaddr - (addhi + addlo);
2136 stop = rello.r_vaddr;
2140 /* An internal RELHI/RELLO pair represents the
2141 difference between two addresses, $LC0 - foo.
2142 The symndx value is actually the difference
2143 between the reloc address and $LC0. This lets us
2144 compute $LC0, and, by considering the addend,
2145 foo. If the reloc we are expanding falls between
2146 those two relocs, we must adjust the addend. At
2147 this point, the symndx value is actually in the
2148 r_offset field, where it was put by
2149 mips_ecoff_swap_reloc_in. */
2150 start = rello.r_vaddr - adj_int_rel.r_offset;
2151 stop = start + addhi + addlo;
2154 else if (adj_int_rel.r_type == MIPS_R_SWITCH)
2156 /* A MIPS_R_SWITCH reloc represents a word of the form
2158 The value in the object file is correct, assuming the
2159 original value of $L3. The symndx value is actually
2160 the difference between the reloc address and $LS12.
2161 This lets us compute the original value of $LS12 as
2163 and the original value of $L3 as
2164 vaddr - symndx + addend
2165 where addend is the value from the object file. At
2166 this point, the symndx value is actually found in the
2167 r_offset field, since it was moved by
2168 mips_ecoff_swap_reloc_in. */
2169 start = adj_int_rel.r_vaddr - adj_int_rel.r_offset;
2170 stop = start + bfd_get_32 (abfd,
2172 + adj_int_rel.r_vaddr
2178 /* If the range expressed by this reloc, which is the
2179 distance between START and STOP crosses the reloc we are
2180 expanding, we must adjust the offset. The sign of the
2181 adjustment depends upon the direction in which the range
2182 crosses the reloc being expanded. */
2183 if (start <= int_rel.r_vaddr && stop > int_rel.r_vaddr)
2184 change = PCREL16_EXPANSION_ADJUSTMENT;
2185 else if (start > int_rel.r_vaddr && stop <= int_rel.r_vaddr)
2186 change = - PCREL16_EXPANSION_ADJUSTMENT;
2190 offsets[adj_i] += change;
2192 if (adj_int_rel.r_type == MIPS_R_RELHI)
2196 offsets[adj_i] += change;
2200 /* Find all symbols in this section defined by this object file
2201 and adjust their values. Note that we decide whether to
2202 adjust the value based on the value stored in the ECOFF EXTR
2203 structure, because the value stored in the hash table may
2204 have been changed by an earlier expanded reloc and thus may
2205 no longer correctly indicate whether the symbol is before or
2206 after the expanded reloc. */
2207 ext_count = ecoff_data (abfd)->debug_info.symbolic_header.iextMax;
2208 adj_h_ptr = ecoff_data (abfd)->sym_hashes;
2209 adj_h_ptr_end = adj_h_ptr + ext_count;
2210 for (; adj_h_ptr < adj_h_ptr_end; adj_h_ptr++)
2212 struct ecoff_link_hash_entry *adj_h;
2215 if (adj_h != (struct ecoff_link_hash_entry *) NULL
2216 && (adj_h->root.type == bfd_link_hash_defined
2217 || adj_h->root.type == bfd_link_hash_defweak)
2218 && adj_h->root.u.def.section == sec
2219 && adj_h->esym.asym.value > int_rel.r_vaddr)
2220 adj_h->root.u.def.value += PCREL16_EXPANSION_ADJUSTMENT;
2223 /* Add an entry to the symbol value adjust list. This is used
2224 by bfd_ecoff_debug_accumulate to adjust the values of
2225 internal symbols and FDR's. */
2226 adjust = ((struct ecoff_value_adjust *)
2227 bfd_alloc (abfd, sizeof (struct ecoff_value_adjust)));
2228 if (adjust == (struct ecoff_value_adjust *) NULL)
2230 bfd_set_error (bfd_error_no_memory);
2234 adjust->start = int_rel.r_vaddr;
2235 adjust->end = sec->vma + sec->_raw_size;
2236 adjust->adjust = PCREL16_EXPANSION_ADJUSTMENT;
2238 adjust->next = ecoff_data (abfd)->debug_info.adjust;
2239 ecoff_data (abfd)->debug_info.adjust = adjust;
2242 if (contents != (bfd_byte *) NULL && ! info->keep_memory)
2248 if (contents != (bfd_byte *) NULL && ! info->keep_memory)
2253 /* This routine is called from mips_relocate_section when a PC
2254 relative reloc must be expanded into the five instruction sequence.
2255 It handles all the details of the expansion, including resolving
2259 mips_relax_pcrel16 (info, input_bfd, input_section, h, location, address)
2260 struct bfd_link_info *info;
2262 asection *input_section;
2263 struct ecoff_link_hash_entry *h;
2269 /* 0x0411ffff is bgezal $0,. == bal . */
2270 BFD_ASSERT (bfd_get_32 (input_bfd, location) == 0x0411ffff);
2272 /* We need to compute the distance between the symbol and the
2273 current address plus eight. */
2274 relocation = (h->root.u.def.value
2275 + h->root.u.def.section->output_section->vma
2276 + h->root.u.def.section->output_offset);
2277 relocation -= address + 8;
2279 /* If the lower half is negative, increment the upper 16 half. */
2280 if ((relocation & 0x8000) != 0)
2281 relocation += 0x10000;
2283 bfd_put_32 (input_bfd, 0x04110001, location); /* bal .+8 */
2284 bfd_put_32 (input_bfd,
2285 0x3c010000 | ((relocation >> 16) & 0xffff), /* lui $at,XX */
2287 bfd_put_32 (input_bfd,
2288 0x24210000 | (relocation & 0xffff), /* addiu $at,$at,XX */
2290 bfd_put_32 (input_bfd, 0x003f0821, location + 12); /* addu $at,$at,$ra */
2291 bfd_put_32 (input_bfd, 0x0020f809, location + 16); /* jalr $at */
2296 /* Given a .sdata section and a .rel.sdata in-memory section, store
2297 relocation information into the .rel.sdata section which can be
2298 used at runtime to relocate the section. This is called by the
2299 linker when the --embedded-relocs switch is used. This is called
2300 after the add_symbols entry point has been called for all the
2301 objects, and before the final_link entry point is called. This
2302 function presumes that the object was compiled using
2306 bfd_mips_ecoff_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
2308 struct bfd_link_info *info;
2313 struct ecoff_link_hash_entry **sym_hashes;
2314 struct ecoff_section_tdata *section_tdata;
2315 struct external_reloc *ext_rel;
2316 struct external_reloc *ext_rel_end;
2319 BFD_ASSERT (! info->relocateable);
2323 if (datasec->reloc_count == 0)
2326 sym_hashes = ecoff_data (abfd)->sym_hashes;
2328 if (! mips_read_relocs (abfd, datasec))
2331 relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 4);
2332 if (relsec->contents == NULL)
2334 bfd_set_error (bfd_error_no_memory);
2338 p = relsec->contents;
2340 section_tdata = ecoff_section_data (abfd, datasec);
2341 ext_rel = (struct external_reloc *) section_tdata->external_relocs;
2342 ext_rel_end = ext_rel + datasec->reloc_count;
2343 for (; ext_rel < ext_rel_end; ext_rel++, p += 4)
2345 struct internal_reloc int_rel;
2346 boolean text_relative;
2348 mips_ecoff_swap_reloc_in (abfd, (PTR) ext_rel, &int_rel);
2350 /* We are going to write a four byte word into the runtime reloc
2351 section. The word will be the address in the data section
2352 which must be relocated. This must be on a word boundary,
2353 which means the lower two bits must be zero. We use the
2354 least significant bit to indicate how the value in the data
2355 section must be relocated. A 0 means that the value is
2356 relative to the text section, while a 1 indicates that the
2357 value is relative to the data section. Given that we are
2358 assuming the code was compiled using -membedded-pic, there
2359 should not be any other possibilities. */
2361 /* We can only relocate REFWORD relocs at run time. */
2362 if (int_rel.r_type != MIPS_R_REFWORD)
2364 *errmsg = "unsupported reloc type";
2365 bfd_set_error (bfd_error_bad_value);
2369 if (int_rel.r_extern)
2371 struct ecoff_link_hash_entry *h;
2373 h = sym_hashes[int_rel.r_symndx];
2374 /* If h is NULL, that means that there is a reloc against an
2375 external symbol which we thought was just a debugging
2376 symbol. This should not happen. */
2377 if (h == (struct ecoff_link_hash_entry *) NULL)
2379 if ((h->root.type == bfd_link_hash_defined
2380 || h->root.type == bfd_link_hash_defweak)
2381 && (h->root.u.def.section->flags & SEC_CODE) != 0)
2382 text_relative = true;
2384 text_relative = false;
2388 switch (int_rel.r_symndx)
2390 case RELOC_SECTION_TEXT:
2391 text_relative = true;
2393 case RELOC_SECTION_SDATA:
2394 case RELOC_SECTION_SBSS:
2395 case RELOC_SECTION_LIT8:
2396 text_relative = false;
2399 /* No other sections should appear in -membedded-pic
2401 *errmsg = "reloc against unsupported section";
2402 bfd_set_error (bfd_error_bad_value);
2407 if ((int_rel.r_offset & 3) != 0)
2409 *errmsg = "reloc not properly aligned";
2410 bfd_set_error (bfd_error_bad_value);
2415 (int_rel.r_vaddr - datasec->vma + datasec->output_offset
2416 + (text_relative ? 0 : 1)),
2423 /* This is the ECOFF backend structure. The backend field of the
2424 target vector points to this. */
2426 static const struct ecoff_backend_data mips_ecoff_backend_data =
2428 /* COFF backend structure. */
2430 (void (*) PARAMS ((bfd *,PTR,int,int,int,int,PTR))) bfd_void, /* aux_in */
2431 (void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_in */
2432 (void (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_in */
2433 (unsigned (*) PARAMS ((bfd *,PTR,int,int,int,int,PTR)))bfd_void,/*aux_out*/
2434 (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* sym_out */
2435 (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* lineno_out */
2436 (unsigned (*) PARAMS ((bfd *,PTR,PTR))) bfd_void, /* reloc_out */
2437 mips_ecoff_swap_filehdr_out, mips_ecoff_swap_aouthdr_out,
2438 mips_ecoff_swap_scnhdr_out,
2439 FILHSZ, AOUTSZ, SCNHSZ, 0, 0, 0, 0, true,
2440 mips_ecoff_swap_filehdr_in, mips_ecoff_swap_aouthdr_in,
2441 mips_ecoff_swap_scnhdr_in, NULL,
2442 mips_ecoff_bad_format_hook, _bfd_ecoff_set_arch_mach_hook,
2443 _bfd_ecoff_mkobject_hook, _bfd_ecoff_styp_to_sec_flags,
2444 _bfd_ecoff_make_section_hook, _bfd_ecoff_set_alignment_hook,
2445 _bfd_ecoff_slurp_symbol_table,
2446 NULL, NULL, NULL, NULL, NULL, NULL, NULL
2448 /* Supported architecture. */
2450 /* Initial portion of armap string. */
2452 /* The page boundary used to align sections in a demand-paged
2453 executable file. E.g., 0x1000. */
2455 /* True if the .rdata section is part of the text segment, as on the
2456 Alpha. False if .rdata is part of the data segment, as on the
2459 /* Bitsize of constructor entries. */
2461 /* Reloc to use for constructor entries. */
2462 &mips_howto_table[MIPS_R_REFWORD],
2464 /* Symbol table magic number. */
2466 /* Alignment of debugging information. E.g., 4. */
2468 /* Sizes of external symbolic information. */
2469 sizeof (struct hdr_ext),
2470 sizeof (struct dnr_ext),
2471 sizeof (struct pdr_ext),
2472 sizeof (struct sym_ext),
2473 sizeof (struct opt_ext),
2474 sizeof (struct fdr_ext),
2475 sizeof (struct rfd_ext),
2476 sizeof (struct ext_ext),
2477 /* Functions to swap in external symbolic data. */
2486 _bfd_ecoff_swap_tir_in,
2487 _bfd_ecoff_swap_rndx_in,
2488 /* Functions to swap out external symbolic data. */
2497 _bfd_ecoff_swap_tir_out,
2498 _bfd_ecoff_swap_rndx_out,
2499 /* Function to read in symbolic data. */
2500 _bfd_ecoff_slurp_symbolic_info
2502 /* External reloc size. */
2504 /* Reloc swapping functions. */
2505 mips_ecoff_swap_reloc_in,
2506 mips_ecoff_swap_reloc_out,
2507 /* Backend reloc tweaking. */
2508 mips_adjust_reloc_in,
2509 mips_adjust_reloc_out,
2510 /* Relocate section contents while linking. */
2511 mips_relocate_section
2514 /* Looking up a reloc type is MIPS specific. */
2515 #define _bfd_ecoff_bfd_reloc_type_lookup mips_bfd_reloc_type_lookup
2517 /* Getting relocated section contents is generic. */
2518 #define _bfd_ecoff_bfd_get_relocated_section_contents \
2519 bfd_generic_get_relocated_section_contents
2521 /* Relaxing sections is MIPS specific. */
2522 #define _bfd_ecoff_bfd_relax_section mips_relax_section
2524 const bfd_target ecoff_little_vec =
2526 "ecoff-littlemips", /* name */
2527 bfd_target_ecoff_flavour,
2528 false, /* data byte order is little */
2529 false, /* header byte order is little */
2531 (HAS_RELOC | EXEC_P | /* object flags */
2532 HAS_LINENO | HAS_DEBUG |
2533 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
2535 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
2536 0, /* leading underscore */
2537 ' ', /* ar_pad_char */
2538 15, /* ar_max_namelen */
2539 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
2540 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
2541 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
2542 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
2543 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
2544 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
2546 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
2547 _bfd_ecoff_archive_p, _bfd_dummy_target},
2548 {bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */
2549 _bfd_generic_mkarchive, bfd_false},
2550 {bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */
2551 _bfd_write_archive_contents, bfd_false},
2553 BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
2554 BFD_JUMP_TABLE_COPY (_bfd_ecoff),
2555 BFD_JUMP_TABLE_CORE (_bfd_nocore),
2556 BFD_JUMP_TABLE_ARCHIVE (_bfd_ecoff),
2557 BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
2558 BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
2559 BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
2560 BFD_JUMP_TABLE_LINK (_bfd_ecoff),
2561 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
2563 (PTR) &mips_ecoff_backend_data
2566 const bfd_target ecoff_big_vec =
2568 "ecoff-bigmips", /* name */
2569 bfd_target_ecoff_flavour,
2570 true, /* data byte order is big */
2571 true, /* header byte order is big */
2573 (HAS_RELOC | EXEC_P | /* object flags */
2574 HAS_LINENO | HAS_DEBUG |
2575 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
2577 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_CODE | SEC_DATA),
2578 0, /* leading underscore */
2579 ' ', /* ar_pad_char */
2580 15, /* ar_max_namelen */
2581 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
2582 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
2583 bfd_getb16, bfd_getb_signed_16, bfd_putb16,
2584 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
2585 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
2586 bfd_getb16, bfd_getb_signed_16, bfd_putb16,
2587 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
2588 _bfd_ecoff_archive_p, _bfd_dummy_target},
2589 {bfd_false, _bfd_ecoff_mkobject, /* bfd_set_format */
2590 _bfd_generic_mkarchive, bfd_false},
2591 {bfd_false, _bfd_ecoff_write_object_contents, /* bfd_write_contents */
2592 _bfd_write_archive_contents, bfd_false},
2594 BFD_JUMP_TABLE_GENERIC (_bfd_ecoff),
2595 BFD_JUMP_TABLE_COPY (_bfd_ecoff),
2596 BFD_JUMP_TABLE_CORE (_bfd_nocore),
2597 BFD_JUMP_TABLE_ARCHIVE (_bfd_ecoff),
2598 BFD_JUMP_TABLE_SYMBOLS (_bfd_ecoff),
2599 BFD_JUMP_TABLE_RELOCS (_bfd_ecoff),
2600 BFD_JUMP_TABLE_WRITE (_bfd_ecoff),
2601 BFD_JUMP_TABLE_LINK (_bfd_ecoff),
2602 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
2604 (PTR) &mips_ecoff_backend_data