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Re: [PATCH] Enable use of ARMv5t BLX for Thumb-mode calls via PLT


Hi Julian,

bfd:
  * bfd-in.h (bfd_elf32_arm_set_target_relocs): Update prototype.
  * bfd-in2.h: Regenerate.
  * elf32-arm.c (elf32_arm_link_hash_table): New field, 'use_blx'.
  (elf32_arm_link_hash_table_create): Initialise fix_v4bx, use_blx.
  (bfd_elf32_arm_set_target_relocs): Handle use_blx.
  (elf32_arm_final_link_relocate): Use Thumb BLX for R_ARM_THM_PC22
  relocations if requested to.
  (allocate_dynrelocs): Don't count size of omitted Thumb stubs based on
  use_blx rather than symbian_p.
  (elf32_arm_finish_dynamic_symbol): Don't output Thumb PLT stubs if
  use_blx is in effect.
  (elf32_arm_symbian_link_hash_table_create): Enable use_blx by default
  for SymbianOS.

ld:
  * ld.texinfo: Document --use-blx.
  * emultempl/armelf.em (use_blx): New variable.
  (arm_elf_create_output_section_statements): Communicate value of
  use_blx to bfd.
  (PARSE_AND_LIST_PROLOGUE): Add OPTION_USE_BLX.
  (PARSE_AND_LIST_OPTIONS): Add --use-blx option.
  (PARSE_AND_LIST_ARGS_CASES): Add OPTION_USE_BLX case.

Approved - please apply.


Cheers
  Nick


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