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User-mode support for arm-vxworks

Nick Clifton nickc@redhat.com
Tue Mar 7 07:54:00 GMT 2006 
Hi Richard,

> 2006-03-03  Richard Sandiford  <richard@codesourcery.com>
> 	    Daniel Jacobowitz  <dan@codesourcery.com>
> 	    Zack Weinberg  <zack@codesourcery.com>
> 	    Nathan Sidwell  <nathan@codesourcery.com>
> 	    Paul Brook  <paul@codesourcery.com>
> 	    Ricardo Anguiano  <anguiano@codesourcery.com>
> 	    Phil Edwards  <phil@codesourcery.com>
> 
> bfd/
> 	* configure.in (bfd_elf32_bigarm_vec): Include elf-vxworks.lo.
> 	(bfd_elf32_bigarm_symbian_vec): Likewise.
> 	(bfd_elf32_bigarm_vxworks_vec): Likewise.
> 	(bfd_elf32_littlearm_vec): Likewise.
> 	(bfd_elf32_littlearm_symbian_vec): Likewise.
> 	(bfd_elf32_littlearm_vxworks_vec): Likewise.
> 	* configure: Regenerate.
> 	* elf32-arm.c: Include libiberty.h and elf-vxworks.h.
> 	(RELOC_SECTION, RELOC_SIZE, SWAP_RELOC_IN, SWAP_RELOC_OUT): New macros.
> 	(elf32_arm_vxworks_bed): Add forward declaration.
> 	(elf32_arm_howto_table_1): Fix the masks for R_ASM_ABS12.
> 	(elf32_arm_vxworks_exec_plt0_entry): New table.
> 	(elf32_arm_vxworks_exec_plt_entry): Likewise.
> 	(elf32_arm_vxworks_shared_plt_entry): Likewise.
> 	(elf32_arm_link_hash_table): Add vxworks_p and srelplt2 fields.
> 	(reloc_section_p): New function.
> 	(create_got_section): Use RELOC_SECTION.
> 	(elf32_arm_create_dynamic_sections): Likewise.  Call
> 	elf_vxworks_create_dynamic_sections for VxWorks targets.
> 	Choose between the two possible values of plt_header_size
> 	and plt_entry_size.
> 	(elf32_arm_link_hash_table_create): Initialize vxworks_p and srelplt2.
> 	(elf32_arm_abs12_reloc): New function.
> 	(elf32_arm_final_link_relocate): Call it.  Allow the creation of
> 	dynamic R_ARM_ABS12 relocs on VxWorks.  Use reloc_section_p,
> 	RELOC_SIZE, SWAP_RELOC_OUT and RELOC_SECTION.  Initialize the
> 	r_addend fields of relocs.  On rela targets, skip any code that
> 	adjusts in-place addends.  When using _bfd_link_final_relocate
> 	to perform a final relocation, pass rel->r_addend as the addend
> 	argument.
> 	(elf32_arm_merge_private_bfd_data): If one of the bfds is a VxWorks
> 	object, ignore flags that are not standard on VxWorks.
> 	(elf32_arm_check_relocs): Allow the creation of dynamic R_ARM_ABS12
> 	relocs on VxWorks.  Use reloc_section_p.
> 	(elf32_arm_adjust_dynamic_symbol): Use RELOC_SECTION and RELOC_SIZE.
> 	(allocate_dynrelocs): Use RELOC_SIZE.  Account for the size of
> 	.rela.plt.unloaded relocs on VxWorks targets.
> 	(elf32_arm_size_dynamic_sections): Use RELOC_SIZE.  Check for
> 	.rela.plt.unloaded as well as .rel(a).plt.  Add DT_RELA* tags
> 	instead of DT_REL* tags on RELA targets.
> 	(elf32_arm_finish_dynamic_symbol): Use RELOC_SECTION, RELOC_SIZE
> 	and SWAP_RELOC_OUT.  Initialize r_addend fields.  Handle VxWorks
> 	PLT entries.  Do not make _GLOBAL_OFFSET_TABLE_ absolute on VxWorks.
> 	(elf32_arm_finish_dynamic_sections): Use RELOC_SECTION, RELOC_SIZE
> 	and SWAP_RELOC_OUT.  Initialize r_addend fields.  Handle DT_RELASZ
> 	like DT_RELSZ.  Handle the VxWorks form of initial PLT entry.
> 	Correct the .rela.plt.unreloaded symbol indexes.
> 	(elf32_arm_output_symbol_hook): Call the VxWorks version of this
> 	hook on VxWorks targets.
> 	(elf32_arm_vxworks_link_hash_table_create): Set vxworks_p to true.
> 	Minor formatting tweak.
> 	(elf32_arm_vxworks_final_write_processing): New function.
> 	(elf_backend_add_symbol_hook): Override for VxWorks and reset
> 	for Symbian.
> 	(elf_backend_final_write_processing): Likewise.
> 	(elf_backend_emit_relocs): Likewise.
> 	(elf_backend_want_plt_sym): Likewise.
> 	(ELF_MAXPAGESIZE): Likewise.
> 	(elf_backend_may_use_rel_p): Minor formatting tweak.
> 	(elf_backend_may_use_rela_p): Likewise.
> 	(elf_backend_default_use_rela_p): Likewise.
> 	(elf_backend_rela_normal): Likewise.
> 	* Makefile.in (elf32-arm.lo): Depend on elf-vxworks.h.
> 
> gas/
> 	* config/tc-arm.c (md_apply_fix): Install a value of zero into a
> 	BFD_RELOC_ARM_OFFSET_IMM field if we're going to generate a RELA
> 	R_ARM_ABS12 reloc.
> 	(tc_gen_reloc): Keep the original fx_offset for RELA pc-relative
> 	relocs, but adjust by md_pcrel_from_section.  Create R_ARM_ABS12
> 	relocations for BFD_RELOC_ARM_OFFSET_IMM on RELA targets.
> 
> gas/testsuite/
> 	* gas/arm/abs12.s, gas/arm/abs12.d: New test.
> 	* gas/arm/pic.d: Skip for *-*-vxworks*...
> 	* gas/arm/pic_vxworks.d: ...use this version instead.
> 	* gas/arm/unwind_vxworks.d: Fix expected output.
> 
> ld/
> 	* emulparams/armelf_vxworks.sh: Include vxworks.sh.
> 	(MAXPAGESIZE): Define.
> 	* emulparams/vxworks.sh: Undefine.
> 	* Makefile.am (earmelf_vxworks.c): Depend on vxworks.sh and vxworks.em.
> 	* Makefile.in: Regenerate.
> 
> ld/testsuite/
> 	* ld-arm/vxworks1.dd, ld-arm/vxworks1.ld, ld-arm/vxworks1-lib.dd,
> 	* ld-arm/vxworks1-lib.nd, ld-arm/vxworks1-lib.rd,
> 	* ld-arm/vxworks1-lib.s, ld-arm/vxworks1.rd, ld-arm/vxworks1.s,
> 	* ld-arm/vxworks1-static.d, ld-arm/vxworks2.s, ld-arm/vxworks2.sd,
> 	* ld-arm/vxworks2-static.sd: New tests.
> 	* ld-arm/arm-elf.exp: Run them.

Approved - please apply.

Cheers
   Nick
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