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[AArch64] Cortex-A53 erratum 835769 linker workaround

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2014-10-22  Tejas Belagod  <tejas.belagod@arm.com>

bfd/
	* bfd-in.h (bfd_elf64_aarch64_set_options): Add a parameter.
	* bfd-in2.h (bfd_elf64_aarch64_set_options): Likewise.
	* elfnn-aarch64.c (aarch64_erratum_835769_stub): New.
	(elf_aarch64_stub_type): Add new type
	aarch64_stub_erratum_835769_veneer.
	(elf_aarch64_stub_hash_entry): New fields for erratum 835769.
	(aarch64_erratum_835769_fix): New data struct to record erratum
	835769.
	(elf_aarch64_link_hash_table: Global flags for 835769.
	(aarch64_build_one_stub): Add case for 835769.
	(aarch64_size_one_stub): Likewise.
	(aarch64_mem_op_p, aarch64_mlxl_p,
	aarch64_erratum_sequence,erratum_835769_scan):
	New. Decode and scan functions for erratum 835769.
	(elf_aarch64_create_or_find_stub_sec): New.
	(elfNN_aarch64_size_stubs): Look for erratum 835769 and record
	them.
	(bfd_elfNN_aarch64_set_options: Set global flag for 835769.
	(erratum_835769_branch_to_stub_data,
	make_branch_to_erratum_835769_stub):New. Connect up all the
	erratum stubs to occurances by branches.
	(elfNN_aarch64_write_section): New hook.
	(aarch64_map_one_stub): Output erratum stub symbol.
	(elfNN_aarch64_size_dynamic_sections): Init mapping symbol
	information for erratum 835769.
	(elf_backend_write_section): Define.

ld/
	* emultempl/aarch64elf.em: Add command-line option for erratum
	835769.

ld/testsuite/

	* ld-aarch64/aarch64-elf.exp (aarch64elftests): Drive erratum
	835769 tests.
	* ld-aarch64/erratum835769.d: New.
	* ld-aarch64/erratum835769.s: New.
This commit is contained in:
Jiong Wang
2014-10-24 11:39:35 +01:00
parent 79ccd89e58
commit 68fcca92b7
11 changed files with 829 additions and 8 deletions
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4
bfd/bfd-in.h
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@@ -937,10 +937,10 @@ extern void bfd_elf32_aarch64_init_maps
(bfd *);
extern void bfd_elf64_aarch64_set_options
(bfd *, struct bfd_link_info *, int, int, int);
(bfd *, struct bfd_link_info *, int, int, int, int);
extern void bfd_elf32_aarch64_set_options
(bfd *, struct bfd_link_info *, int, int, int);
(bfd *, struct bfd_link_info *, int, int, int, int);
/* ELF AArch64 mapping symbol support. */
#define BFD_AARCH64_SPECIAL_SYM_TYPE_MAP (1 << 0)