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[binutils-gdb] Add support for stable secure gateway veneers addresses


*** TEST RESULTS FOR COMMIT 0955507f6e7144c9c5e420bbcf617593b13de38b ***

Author: Thomas Preud'homme <thomas.preudhomme@arm.com>
Branch: master
Commit: 0955507f6e7144c9c5e420bbcf617593b13de38b

Add support for stable secure gateway veneers addresses

2016-08-26  Thomas Preud'homme  <thomas.preudhomme@arm.com>

bfd/
	* bfd-in.h (bfd_elf32_arm_set_target_relocs): Add a new parameter for
	the input import library bfd.
	* bfd-in2.h: Regenerate.
	* elf32-arm.c (struct elf32_arm_link_hash_table): New in_implib_bfd
	and new_cmse_stub_offset fields.
	(stub_hash_newfunc): Initialize stub_offset and stub_template_size to
	-1.
	(elf32_arm_add_stub): Likewise for stub_offset.
	(arm_new_stubs_start_offset_ptr): New function.
	(arm_build_one_stub): Only allocate a stub_offset if it is -1.  Allow
	empty SG veneers to have zero relocations.
	(arm_size_one_stub): Only initialize stub size and template
	information for non empty veneers.  Do not update veneer section size
	if veneer already has an offset.
	(elf32_arm_create_stub): Return the stub entry pointer or NULL instead
	of a boolean indicating success or failure.
	(cmse_scan): Change stub_changed parameter into an integer pointer
	parameter cmse_stub_created to count the number of stub created and
	adapt to change of return value in elf32_arm_create_stub.
	(cmse_entry_fct_p): New function.
	(arm_list_new_cmse_stub): Likewise.
	(set_cmse_veneer_addr_from_implib): Likewise.
	(elf32_arm_size_stubs): Define cmse_stub_created, pass its address to
	cmse_scan instead of that of cmse_stub_changed to compute the number
	of stub created and use it to initialize stub_changed.  Call
	set_cmse_veneer_addr_from_implib after all cmse_scan.  Adapt to change
	of return value in elf32_arm_create_stub.  Use
	arm_stub_section_start_offset () if not NULL to initialize size of
	secure gateway veneers section.  Initialize stub_offset of Cortex-A8
	erratum fix to -1.  Use ret to hold return value.
	(elf32_arm_build_stubs): Use arm_stub_section_start_offset () if not
	NULL to initialize size of secure gateway veneers section.  Adapt
	comment to stress the importance of zeroing veneer section content.
	(bfd_elf32_arm_set_target_relocs): Add new in_implib_bfd parameter to
	initialize eponymous field in struct elf32_arm_link_hash_table.

ld/
	* emultempl/armelf.em (in_implib_filename): Declare and initialize new
	variable.
	(arm_elf_create_output_section_statements): Open import input library
	file for writing and pass resulting in_implib_bfd to
	bfd_elf32_arm_set_target_relocs.
	(PARSE_AND_LIST_PROLOGUE): Define OPTION_IN_IMPLIB option.
	(PARSE_AND_LIST_LONGOPTS): Define --in-implib option.
	(PARSE_AND_LIST_OPTIONS): Add help message for --in-implib option.
	(PARSE_AND_LIST_ARGS_CASES): Handle new OPTION_IN_IMPLIB case.
	* ld.texinfo (--cmse-implib): Update to mention --in-implib.
	(--in-implib): Document new option.
	* NEWS: Likewise.
	* testsuite/ld-arm/arm-elf.exp
	(Secure gateway import library generation): add --defsym VER=1 to gas
	CLI.
	(Secure gateway import library generation: errors): Likewise.
	(Input secure gateway import library): New test.
	(Input secure gateway import library: no output import library):
	Likewise.
	(Input secure gateway import library: not an SG input import library):
	Likewise.
	(Input secure gateway import library: earlier stub section base):
	Likewise.
	(Input secure gateway import library: later stub section base):
	Likewise.
	(Input secure gateway import library: veneer comeback): Likewise.
	(Input secure gateway import library: entry function change):
	Likewise.
	* testsuite/ld-arm/cmse-implib.s: Add input import library testing.
	* testsuite/ld-arm/cmse-implib.rd: Update accordingly.
	* testsuite/ld-arm/cmse-new-implib.out: New file.
	* testsuite/ld-arm/cmse-new-implib.rd: Likewise.
	* testsuite/ld-arm/cmse-new-implib-no-output.out: Likewise.
	* testsuite/ld-arm/cmse-new-implib-not-sg-in-implib.out: Likewise.
	* testsuite/ld-arm/cmse-new-earlier-later-implib.out: Likewise.
	* testsuite/ld-arm/cmse-new-comeback-implib.rd: Likewise.
	* testsuite/ld-arm/cmse-new-wrong-implib.out: Likewise.


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