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H.J. Lu 2df3368d85 Properly handle dynamic reloc against normal symbol

We shouldn't issue an error for read-only segment with dynamic IFUNC
relocations when dynamic relocations are against normal symbols.

bfd/

	PR ld/19939
	* elf-bfd.h (_bfd_elf_allocate_ifunc_dyn_relocs): Add a pointer
	to bfd_boolean.
	* elf-ifunc.c (_bfd_elf_allocate_ifunc_dyn_relocs): Updated.
	Set *readonly_dynrelocs_against_ifunc_p to TRUE if dynamic reloc
	applies to read-only section.
	* elf32-i386.c (elf_i386_link_hash_table): Add
	readonly_dynrelocs_against_ifunc.
	(elf_i386_allocate_dynrelocs): Updated.
	(elf_i386_size_dynamic_sections): Issue an error for read-only
	segment with dynamic IFUNC relocations only if
	readonly_dynrelocs_against_ifunc is TRUE.
	* elf64-x86-64.c (elf_x86_64_link_hash_table): Add
	readonly_dynrelocs_against_ifunc.
	(elf_x86_64_allocate_dynrelocs): Updated.
	(elf_x86_64_size_dynamic_sections): Issue an error for read-only
	segment with dynamic IFUNC relocations only if
	readonly_dynrelocs_against_ifunc is TRUE.
	* elfnn-aarch64.c (elfNN_aarch64_allocate_ifunc_dynrelocs):
	Updated.

ld/

	PR ld/19939
	* testsuite/ld-i386/i386.exp: Run PR ld/19939 tests.
	* testsuite/ld-x86-64/x86-64.exp: Likewise.
	* testsuite/ld-i386/pr19939.s: New file.
	* testsuite/ld-i386/pr19939a.d: Likewise.
	* testsuite/ld-i386/pr19939b.d: Likewise.
	* testsuite/ld-x86-64/pr19939.s: Likewise.
	* testsuite/ld-x86-64/pr19939a.d: Likewise.
	* testsuite/ld-x86-64/pr19939b.d: Likewise.

2016-04-11 19:41:52 -07:00

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 #source: pr19939.s
 #as: --64
 #ld: -melf_x86_64 -shared -z defs
 #error: undefined reference to `foo'