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| author |   Michael Eager <eager@eagercon.com> | 2018-04-17 14:47:13 -0700 |
|---|---|---|
| committer | Michael Eager <eager@eagercon.com> | 2018-04-17 14:47:13 -0700 |
| commit | 3f0a5f17d7fe1f3d0911ad67a5993be59983fb00 (patch) | |
| tree | 76261ae8c3c1153a62dc11d955eb7502ef6c8483 /bfd/ChangeLog | |
| parent | Conditionally drop the discriminant field in quirk_rust_enum (diff) | |
| download | binutils-gdb-3f0a5f17d7fe1f3d0911ad67a5993be59983fb00.tar.gz binutils-gdb-3f0a5f17d7fe1f3d0911ad67a5993be59983fb00.tar.bz2 binutils-gdb-3f0a5f17d7fe1f3d0911ad67a5993be59983fb00.zip | |
[MicroBlaze] PIC data text relative
Andrew Sadek <andrew.sadek.se@gmail.com>
A new implemented feature in GCC Microblaze that allows Position
Independent Code to run using Data Text Relative addressing instead
of using Global Offset Table.
Its aim was to make 'PIC' more efficient and flexible as elf size
excess performance overhead were noticed when using GOT due to the
indirect addressing.
include/ChangeLog:
* bfdlink.h (Add flag): Add new flag @ 'bfd_link_info' struct.
* elf/microblaze.h (Add 3 new relocations):
R_MICROBLAZE_TEXTPCREL_64, R_MICROBLAZE_TEXTREL_64
and R_MICROBLAZE_TEXTREL_32_LO for relax function.
bfd/ChangeLog:
* bfd/reloc.c (2 new BFD relocations):
BFD_RELOC_MICROBLAZE_64_TEXTPCREL &
BFD_RELOC_MICROBLAZE_64_TEXTPCREL
* bfd/bfd-in2.h: Regenerate
* bfd/libbfd.h: Regenerate
* bfd/elf32-microblaze.c (Handle new relocs): define 'HOWTO' of 3
new relocs and handle them in both relocate and relax functions.
(microblaze_elf_reloc_type_lookup): add mapping between for new
bfd relocs.
(microblaze_elf_relocate_section): Handle new relocs in case of
elf relocation.
(microblaze_elf_relax_section): Handle new relocs for elf relaxation.
gas/ChangeLog:
* gas/config/tc-microblaze.c (Handle new relocs directives in
assembler): Handle new relocs from compiler output.
(imm_types): add new imm types for data text relative addressing
TEXT_OFFSET, TEXT_PC_OFFSET
(md_convert_frag): conversion for BFD_RELOC_MICROBLAZE_64_TEXTPCREL,
BFD_RELOC_MICROBLAZE_64_TEXTPCREL
(md_apply_fix): apply fix for BFD_RELOC_MICROBLAZE_64_TEXTPCREL,
BFD_RELOC_MICROBLAZE_64_TEXTPCREL
(md_estimate_size_before_relax): estimate size for
BFD_RELOC_MICROBLAZE_64_TEXTPCREL,
BFD_RELOC_MICROBLAZE_64_TEXTPCREL
(tc_gen_reloc): generate relocations for
BFD_RELOC_MICROBLAZE_64_TEXTPCREL,
BFD_RELOC_MICROBLAZE_64_TEXTPCREL
ld/ChangeLog:
* ld/lexsup.c (Add 2 ld options):
(ld_options): add disable-multiple-abs-defs @ 'ld_options' array
(parse_args): parse new option and pass flag to 'link_info' struct.
* ld/ldlex.h (Add enum): add new enum @ 'option_values' enum.
* ld/ld.texinfo (Add new option): Add description for
'disable-multiple-abs-defs'
* ld/main.c: Initialize flags with false @ 'main'. Handle
disable-multiple-abs-defs @ 'mutiple_definition'.
Diffstat (limited to 'bfd/ChangeLog')
| -rw-r--r-- | bfd/ChangeLog | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 88365d0aa57..6e76defc84a 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,20 @@ +2018-04-09 Andrew Sadek <andrew.sadek.se@gmail.com> + + Microblaze Target: PIC data text relative + + * bfd/reloc.c (2 new BFD relocations): + BFD_RELOC_MICROBLAZE_64_TEXTPCREL & + BFD_RELOC_MICROBLAZE_64_TEXTPCREL + * bfd/bfd-in2.h: Regenerate + * bfd/libbfd.h: Regenerate + * bfd/elf32-microblaze.c (Handle new relocs): define 'HOWTO' of 3 + new relocs and handle them in both relocate and relax functions. + (microblaze_elf_reloc_type_lookup): add mapping between for new + bfd relocs. + (microblaze_elf_relocate_section): Handle new relocs in case of + elf relocation. + (microblaze_elf_relax_section): Handle new relocs for elf relaxation. + 2018-04-17 Nick Clifton <nickc@redhat.com> PR 23055 |