DWARF2 debug info (line information only, at this point).
* as.h: Update comment about supported debug formats.
* dwarf2dbg.c, dwarf2dbg.h: New files.
* Makefile.am (GAS_CFILES, HFILES, GENERIC_OBJS): Add them.
(op_encoding): Switch [ into O_index, if desired.
(op_rank): Renumber with O_index on bottom.
(expr): If O_index, match closing bracket.
* expr.h (O_index): New.
* dwarf2.c (struct line_info): Add member END_SEQUENCE to keep
track of end_sequence markers.
(add_line_info): Add END_SEQUENCE arg.
(decode_line_info): Don't try to infer lo_pc and hi_pc from the
debug-line info---it doesn't work right if a compilation unit
consists of multiple discontiguous code-sequences. It would be
worthwhile to optimize for the common case where a compilation
unit results in a contiguous set of code sequences, but this is
quite tricky to get right for arbitrary DWARF2 files.
(lookup_address_in_line_info_table): Don't use the last line entry
for a compilation unit for anything with an address higher than
this line entry. Also, check for end_sequence markers to
correctly handle discontinuities.
(_bfd_dwarf2_find_nearest_line): When checking previously loaded
compilation units, check all compilation units with each->high==0
just like when reading compilation units.
* dwarf2.c (decode_line_info): Initialize table->files and
table->last_line to NULL to avoid segfaults due to random
values in these members.
(concat_filename): Check for out-of-range file number before
indexing filename table. Segfaults suck.
* dwarf2.c (decode_line_info): Don't truncate address to least
significant 32 bits (breaks 64 bit targets).
(lookup_address_in_function_table): Ditto.
(comp_unit_contains_address): Ditto.
(app_push): Save saved_input in allocated buffer.
(app_pop): Restored saved_input.
(do_scrub_chars): Change get parameter to take char * and int as
arguments. Change GET macro to pass input_buffer to get
function. Don't save input into allocated buffer.
* as.h (do_scrub_chars): Update declaration.
* input-file.c (input_file_get): Change to take char * and int.
Read data into passed in buffer. Remove static buffer.
* read.c (scrub_from_string): Change to take char * and int. Copy
data into passed in buffer.
* macro.c (macro_expand_body): Call hash_jam with NULL rather than
hash_delete
.CVS: ----------------------------------------------------------------------
* elf64-mips.c (mips_elf64_howto_table_rel): Likewise.
(mips_elf64_howto_table_rela): Likewise.
* elfcode.h (elf_slurp_reloc_table_from_section): New function,
split out from ...
(elf_slurp_reloc_table): Here. Use it to handle the case where a
single section has two associated relocation sections.
may_use_rel_p, may_use_rela_p, default_use_rela_p.
(bfd_elf_section_data): Add use_rela_p.
* elf.c (bfd_section_from_shdr): Set use_rela_p appropriately.
(_bfd_elf_new_section_hook): Likewise.
(elf_fake_sections): Use may_use_rela_p, etc., instead of
use_rela_p.
(_bfd_elf_copy_private_section_data): Copy use_rela_p.
* elfcode.h (write_relocs): Determine whether or not use rela
relocs based on the relocation section header.
* elflink.c (_bfd_elf_create_dynamic_sections): Use default_use_rela_p
instead of use_rela_p.
* elfxx-target.h (elf_backend_may_use_relp): New macro.
(elf_backend_may_use_rela_p): Likewise.
(elf_backend_default_use_rela_p): Likewise.
(elfNN_bed): Use them.
(BFD_RELOC_MIPS_GOT_PAGE): Likewise.
(BFD_RELOC_MIPS_GOT_OFST): Likewise.
(BFD_RELOC_MIPS_GOT_DISP): Likewise.
* bfd-in2.h: Regenerated.
* libbfd.h: Likewise.
* elf32-mips.c (mips_info_to_howto_rela): New function.
(USE_REL): Adjust for new conventions.
(MINUS_ONE): New macro.
(elf_mips_howto_table): Add R_MIPS_SUB.
(mips_r): Add entries for MIPS_SUB, MIPS_GOT_PAGE, MIPS_GOT_OFST,
and MIPS_GOT_DISP.
(mips_elf_final_write_processing): Set sh_link, not sh_info, for a
.MIPS.content section.
(_bfd_mips_elf_fake_sections): Treat all sections that begin
with .MIPS.content as .MIPS.content sections. Set
SHF_MNIPS_NOSTRIP for such section.
(elf_info_to_howto): Define to mips_info_to_howto_rela.
* elf64-mips.c (mips_r): Add entries for MIPS_SUB, MIPS_GOT_PAGE,
MIPS_GOT_OFST, and MIPS_GOT_DISP.
* elf32-arm.h (elf32_arm_relocate_section): Reinstate change of
1993-03-25 (!!). Take into account the bitmasks for the reloc so
the addend does not overflow into the rest of the word
