+2010-05-25 Daniel Jacobowitz <dan@codesourcery.com>
+ Joseph Myers <joseph@codesourcery.com>
+ Andrew Stubbs <ams@codesourcery.com>
+
+ * config.bfd (sh-*-uclinux* | sh[12]-*-uclinux*): Add
+ bfd_elf32_shl_vec, and FDPIC vectors to targ_selvecs.
+ * configure.in: Handle FDPIC vectors.
+ * elf32-sh-relocs.h: Add FDPIC and movi20 relocations.
+ * elf32-sh.c (DEFAULT_STACK_SIZE): Define.
+ (SYMBOL_FUNCDESC_LOCAL): Define. Use it instead of
+ SYMBOL_REFERENCES_LOCAL for function descriptors.
+ (fdpic_object_p): New.
+ (sh_reloc_map): Add FDPIC and movi20 relocations.
+ (sh_elf_info_to_howto, sh_elf_relocate_section): Handle new invalid
+ range.
+ (struct elf_sh_plt_info): Add got20 and short_plt. Update all
+ definitions.
+ (FDPIC_PLT_ENTRY_SIZE, FDPIC_PLT_LAZY_OFFSET): Define.
+ (fdpic_sh_plt_entry_be, fdpic_sh_plt_entry_le, fdpic_sh_plts): New.
+ (FDPIC_SH2A_PLT_ENTRY_SIZE, FDPIC_SH2A_PLT_LAZY_OFFSET): Define.
+ (fdpic_sh2a_plt_entry_be, fdpic_sh2a_plt_entry_le)
+ (fdpic_sh2a_short_plt_be, fdpic_sh2a_short_plt_le, fdpic_sh2a_plts):
+ New.
+ (get_plt_info): Handle FDPIC.
+ (MAX_SHORT_PLT): Define.
+ (get_plt_index, get_plt_offset): Handle short_plt.
+ (union gotref): New.
+ (struct elf_sh_link_hash_entry): Add funcdesc, rename tls_type to
+ got_type and adjust all uses. Add GOT_FUNCDESC.
+ (struct sh_elf_obj_tdata): Add local_funcdesc. Rename
+ local_got_tls_type to local_got_type.
+ (sh_elf_local_got_type): Renamed from sh_elf_local_got_tls_type. All
+ users changed.
+ (sh_elf_local_funcdesc): Define.
+ (struct elf_sh_link_hash_table): Add sfuncdesc, srelfuncdesc, fdpic_p,
+ and srofixup.
+ (sh_elf_link_hash_newfunc): Initialize new fields.
+ (sh_elf_link_hash_table_create): Set fdpic_p.
+ (sh_elf_omit_section_dynsym): New.
+ (create_got_section): Create .got.funcdesc, .rela.got.funcdesc
+ and .rofixup.
+ (allocate_dynrelocs): Allocate local function descriptors and space
+ for R_SH_FUNCDESC-related relocations, and for rofixups.
+ Handle GOT_FUNCDESC. Create fixups. Handle GOT entries which
+ require function descriptors.
+ (sh_elf_always_size_sections): Handle PT_GNU_STACK and __stacksize.
+ (sh_elf_modify_program_headers): New.
+ (sh_elf_size_dynamic_sections): Allocate function descriptors for
+ local symbols. Allocate .got.funcdesc contents. Allocate rofixups.
+ Handle local GOT entries of type GOT_FUNCDESC. Create fixups for
+ local GOT entries. Ensure that FDPIC libraries always have a PLTGOT
+ entry in the .dynamic section.
+ (sh_elf_add_dyn_reloc, sh_elf_got_offset, sh_elf_initialize_funcdesc)
+ (sh_elf_add_rofixup, sh_elf_osec_to_segment)
+ (sh_elf_osec_readonly_p, install_movi20_field): New functions.
+ (sh_elf_relocate_section): Handle new relocations, R_SH_FUNCDESC,
+ R_SH_GOTFUNCDESC and R_SH_GOTOFFFUNCDESC. Use sh_elf_got_offset
+ and .got.plt throughout to find _GLOBAL_OFFSET_TABLE_. Add rofixup
+ read-only section warnings. Handle undefined weak symbols. Generate
+ fixups for R_SH_DIR32 and GOT entries. Check for cross-segment
+ relocations and clear EF_SH_PIC. Handle 20-bit relocations.
+ Always generate R_SH_DIR32 for FDPIC instead of R_SH_RELATIVE.
+ (sh_elf_gc_sweep_hook): Handle R_SH_FUNCDESC, R_SH_GOTOFF20,
+ R_SH_GOTFUNCDESC, R_SH_GOTFUNCDESC20, and R_SH_GOTOFFFUNCDESC.
+ Handle 20-bit relocations.
+ (sh_elf_copy_indirect_symbol): Copy function descriptor reference
+ counts.
+ (sh_elf_check_relocs): Handle new relocations. Make symbols
+ dynamic for FDPIC relocs. Account for rofixups. Error for FDPIC
+ symbol mismatches. Allocate a GOT for R_SH_DIR32. Allocate fixups
+ for R_SH_DIR32.
+ (sh_elf_copy_private_data): Copy PT_GNU_STACK size.
+ (sh_elf_merge_private_data): Copy initial flags. Do not clobber
+ non-mach flags. Set EF_SH_PIC for FDPIC. Reject FDPIC mismatches.
+ (sh_elf_finish_dynamic_symbol): Do not handle got_funcdesc entries
+ here. Rename sgot to sgotplt and srel to srelplt. Handle short_plt,
+ FDPIC descriptors, and got20. Create R_SH_FUNCDESC_VALUE for FDPIC.
+ Use install_movi20_field. Rename srel to srelgot. Always generate
+ R_SH_DIR32 for FDPIC instead of R_SH_RELATIVE.
+ (sh_elf_finish_dynamic_sections): Fill in the GOT pointer in rofixup.
+ Do not fill in reserved GOT entries for FDPIC. Correct DT_PLTGOT.
+ Rename sgot to sgotplt. Assert that the right number of rofixups
+ and dynamic relocations were allocated.
+ (sh_elf_use_relative_eh_frame, sh_elf_encode_eh_address): New.
+ (elf_backend_omit_section_dynsym): Use sh_elf_omit_section_dynsym.
+ (elf_backend_can_make_relative_eh_frame)
+ (elf_backend_can_make_lsda_relative_eh_frame)
+ (elf_backend_encode_eh_address): Define.
+ (TARGET_BIG_SYM, TARGET_BIG_NAME, TARGET_LITTLE_SYM)
+ (TARGET_LITTLE_NAME, elf_backend_modify_program_headers, elf32_bed):
+ Redefine for FDPIC vector.
+ * reloc.c: Add SH FDPIC and movi20 relocations.
+ * targets.c (_bfd_target_vector): Add FDPIC vectors.
+ * configure, bfd-in2.h, libbfd.h: Regenerated.
+
2010-05-25 Jay Krell <jay.krell@cornell.edu>
PR ld/11624
projects / deliverable / binutils-gdb.git / blobdiff