FT32B is a new FT32 family member. It has a code compression scheme, which requires...
authorJames Bowman <james.bowman@ftdichip.com>
Wed, 1 Nov 2017 15:33:24 +0000 (15:33 +0000)
committerNick Clifton <nickc@redhat.com>
Wed, 1 Nov 2017 15:33:24 +0000 (15:33 +0000)
commit81b42bcab16f4462eb4c91db2cf09cd76e17402e
treef46b9942608fd108bf16b1b10eea645c82e7142e
parenta67d66eb97e7613a38ffe6622d837303b3ecd31d
FT32B is a new FT32 family member. It has a code compression scheme, which requires the use of linker relaxations. The change is quite large, so submission is in several parts.

Part 2 adds a relaxation pass, which actually implements the code compression scheme.

bfd * archures.c: Add bfd_mach_ft32b.
* cpu-ft32.c: Add arch_info_struct.
* elf32-ft32.c: Add R_FT32_RELAX, SC0, SC1,
DIFF32. (ft32_elf_relocate_section): Add clauses
for R_FT32_SC0, SC1, DIFF32.  (ft32_reloc_shortable,
elf32_ft32_is_diff_reloc, elf32_ft32_adjust_diff_reloc_value,
elf32_ft32_adjust_reloc_if_spans_insn,
elf32_ft32_relax_delete_bytes, elf32_ft32_relax_is_branch_target,
ft32_elf_relax_section): New function.
* reloc.c: Add BFD_RELOC_FT32_RELAX, SC0, SC1, DIFF32.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.

gas * config/tc-ft32.c (md_assemble): add relaxation reloc
BFD_RELOC_FT32_RELAX.  (md_longopts): Add "norelax" and
"no-relax". (md_apply_fix): Add reloc BFD_RELOC_FT32_DIFF32.
(relaxable_section, ft32_validate_fix_sub, ft32_force_relocation,
ft32_allow_local_subtract): New function.
* config/tc-ft32.h: remove unused MD_PCREL_FROM_SECTION.
* testsuite/gas/ft32/insnsc.s: New test exercising all FT32B
shortcodes.

include * elf/ft32.h: Add R_FT32_RELAX, SC0, SC1, DIFF32.
32 files changed:
bfd/ChangeLog
bfd/archures.c
bfd/bfd-in2.h
bfd/cpu-ft32.c
bfd/elf32-ft32.c
bfd/libbfd.h
bfd/reloc.c
binutils/ChangeLog
binutils/readelf.c
gas/ChangeLog
gas/config/tc-ft32.c
gas/config/tc-ft32.h
gas/testsuite/gas/all/gas.exp
gas/testsuite/gas/elf/dwarf2-11.d
gas/testsuite/gas/elf/dwarf2-12.d
gas/testsuite/gas/elf/dwarf2-13.d
gas/testsuite/gas/elf/dwarf2-14.d
gas/testsuite/gas/elf/dwarf2-15.d
gas/testsuite/gas/elf/dwarf2-16.d
gas/testsuite/gas/elf/dwarf2-17.d
gas/testsuite/gas/elf/dwarf2-18.d
gas/testsuite/gas/elf/dwarf2-3.d
gas/testsuite/gas/elf/dwarf2-5.d
gas/testsuite/gas/elf/dwarf2-7.d
gas/testsuite/gas/ft32/ft32.exp
gas/testsuite/gas/ft32/insn.d
gas/testsuite/gas/ft32/insnsc.d [new file with mode: 0644]
gas/testsuite/gas/ft32/insnsc.s [new file with mode: 0644]
gas/testsuite/gas/lns/lns-big-delta.d
gas/testsuite/gas/lns/lns.exp
include/ChangeLog
include/elf/ft32.h