[Morello] Add Morello relocations for ADRP

[Morello] Add Morello relocations for ADRP

New relocations R_MORELLO_ADR_PREL_PG_HI20,
R_MORELLO_ADR_PREL_PG_HI20_NC and R_MORELLO_ADR_GOT_PAGE

bfd/ChangeLog:

2020-10-20  Siddhesh Poyarekar  <siddesh.poyarekar@arm.com>

	* reloc.c: Add MORELLO_ADR_HI20_PCREL,
	MORELLO_ADR_HI20_NC_PCREL and MORELLO_ADR_GOT_PAGE.
	* elfnn-aarch64.c (elfNN_aarch64_howto_table): Likewise.
	(aarch64_reloc_got_type): Add MORELLO_ADR_GOT_PAGE.
	(_bfd_aarch64_erratum_843419_branch_to_stub): Add C64 argument
	to _bfd_aarch64_reencode_adr_imm.
	(elfNN_aarch64_final_link_relocate,
	elfNN_aarch64_check_relocs): Add MORELLO_ADR_GOT_PAGE,
	MORELLO_ADR_HI20_PCREL and MORELLO_ADR_HI20_NC_PCREL.
	* elfxx-aarch64.c (_bfd_aarch64_reencode_adr_imm): Add C64
	argument.
	(_bfd_aarch64_elf_put_addend): Adjust callers.
	* elfxx-aarch64.h (_bfd_aarch64_reencode_adr_imm): Add C64
	argument.
	* libbfd.h (bfd_reloc_code_real_names): Add
	MORELLO_ADR_GOT_PAGE, MORELLO_ADR_HI20_PCREL and
	MORELLO_ADR_HI20_NC_PCREL.
	* bfd-in2.h: Regenerate.

gas/ChangeLog:

2020-10-20  Siddhesh Poyarekar  <siddesh.poyarekar@arm.com>

	* config/tc-aarch64.c (reloc_table_entry): Add c64_adrp_type
	field.
	(reloc_table): Adjust.
	(parse_adrp): Adjust users.
	(md_apply_fix): Add MORELLO_ADR_GOT_PAGE,
	MORELLO_ADR_HI20_PCREL and MORELLO_ADR_HI20_NC_PCREL.
	* testsuite/gas/aarch64/morello_insn-c64.d: Adjust test.

include/ChangeLog:

2020-10-20  Siddhesh Poyarekar  <siddesh.poyarekar@arm.com>

	* elf/aarch64.h: Add R_MORELLO_ADR_PREL_PG_HI20,
	R_MORELLO_ADR_PREL_PG_HI20_NC and R_MORELLO_ADR_GOT_PAGE.