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| author | James Bowman <james.bowman@ftdichip.com> | 2017-11-01 15:33:24 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2017-11-01 15:33:24 +0000 |
| commit | 81b42bcab16f4462eb4c91db2cf09cd76e17402e (patch) | |
| tree | f46b9942608fd108bf16b1b10eea645c82e7142e /bfd/cpu-ft32.c | |
| parent | a67d66eb97e7613a38ffe6622d837303b3ecd31d (diff) | |
| download | gdb-81b42bcab16f4462eb4c91db2cf09cd76e17402e.zip gdb-81b42bcab16f4462eb4c91db2cf09cd76e17402e.tar.gz gdb-81b42bcab16f4462eb4c91db2cf09cd76e17402e.tar.bz2 | |
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.
Diffstat (limited to 'bfd/cpu-ft32.c')
| -rw-r--r-- | bfd/cpu-ft32.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/bfd/cpu-ft32.c b/bfd/cpu-ft32.c index b24b0fc..033720b 100644 --- a/bfd/cpu-ft32.c +++ b/bfd/cpu-ft32.c @@ -23,6 +23,40 @@ #include "libbfd.h" +static const bfd_arch_info_type arch_info_struct[] = + { + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_ft32, /* enum bfd_architecture arch. */ + bfd_mach_ft32, + "ft32", /* Arch name. */ + "ft32", /* Printable name. */ + 2, /* Unsigned int section alignment power. */ + FALSE, /* The one and only. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + &arch_info_struct[1], + }, + { + 32, /* 32 bits in a word. */ + 32, /* 32 bits in an address. */ + 8, /* 8 bits in a byte. */ + bfd_arch_ft32, /* enum bfd_architecture arch. */ + bfd_mach_ft32b, + "ft32b", /* Arch name. */ + "ft32b", /* Printable name. */ + 2, /* Unsigned int section alignment power. */ + FALSE, /* The one and only. */ + bfd_default_compatible, + bfd_default_scan, + bfd_arch_default_fill, + 0, + }, + }; + const bfd_arch_info_type bfd_ft32_arch = { 32, /* 32 bits in a word. */ @@ -37,5 +71,5 @@ const bfd_arch_info_type bfd_ft32_arch = bfd_default_compatible, bfd_default_scan, bfd_arch_default_fill, - 0, + arch_info_struct, }; |