binutils-gdb/ld/testsuite/ld-x86-64/pr21997-1a.S

	.text
	.p2align 4,,15
	.globl	get_protected
	.type	get_protected, @function
get_protected:
	movl	protected(%rip), %eax
	ret
	.size	get_protected, .-get_protected
	.p2align 4,,15
	.globl	get_protected_p
	.type	get_protected_p, @function
get_protected_p:
	leaq	protected(%rip), %rax
	ret
	.size	get_protected_p, .-get_protected_p
	.protected	protected
	.globl	protected
	.data
	.align 4
	.type	protected, @object
	.size	protected, 4
protected:
	.long	1
	.section	.note.GNU-stack,"",@progbits
Disallow copy relocation against protected data symbol We shpouldn't generate copy relocation to resolve reference to protected data symbol defined in shared object with the NO_COPY_ON_PROTECTED property. This patch adds a bit to elf_obj_tdata as well as elf_i386_link_hash_entry and elf_x86_64_link_hash_entry to track the bfd with the NO_COPY_ON_PROTECTED property as well as protected symbol defined in shared object. extern_protected_data is set to FALSE if any input relocatable file contains the NO_COPY_ON_PROTECTED property. bfd/ PR ld/21997 * elf-bfd.h (elf_obj_tdata): Use ENUM_BITFIELD on object_id, dyn_lib_class and has_gnu_symbols. Change bad_symtab to bitfield. Add a has_no_copy_on_protected bitfield. (elf_has_no_copy_on_protected): New. * elf-properties.c (_bfd_elf_parse_gnu_properties): Set elf_has_no_copy_on_protected for GNU_PROPERTY_NO_COPY_ON_PROTECTED. (elf_merge_gnu_property_list): Likewise. (_bfd_elf_link_setup_gnu_properties): Set extern_protected_data to FALSE for elf_has_no_copy_on_protected. * elf32-i386.c (SYMBOL_NO_COPYRELOC): New. (elf_i386_link_hash_entry): Add def_protected. (elf_i386_adjust_dynamic_symbol): Also check SYMBOL_NO_COPYRELOC when checking info->nocopyreloc. (elf_i386_link_setup_gnu_properties): Don't set extern_protected_data here. (elf_i386_merge_symbol_attribute): New function. (elf_backend_merge_symbol_attribute): New. * elf64-x86-64.c (SYMBOL_NO_COPYRELOC): New. (elf_x86_64_link_hash_entry): Add def_protected. (elf_x86_64_need_pic): Report protected symbol for def_protected. (elf_x86_64_adjust_dynamic_symbol): Also check SYMBOL_NO_COPYRELOC when checking info->nocopyreloc. (elf_x86_64_relocate_section): Also check for R_X86_64_PC32 relocation run-time overflow and unresolvable R_X86_64_32S relocation against protected data symbol defined in shared object with GNU_PROPERTY_NO_COPY_ON_PROTECTED. (elf_x86_64_link_setup_gnu_properties): Don't set extern_protected_data here. (elf_x86_64_merge_symbol_attribute): New function. (elf_backend_merge_symbol_attribute): New. ld/ PR ld/21997 * testsuite/ld-i386/i386.exp: Run PR ld/21997 tests. * testsuite/ld-x86-64/x86-64.exp: Likewise. * testsuite/ld-i386/pr21997-1a.S: New file. * testsuite/ld-i386/pr21997-1b.c: Likewise. * testsuite/ld-i386/pr21997-1c.S: Likewise. * testsuite/ld-x86-64/pr21997-1a.S: Likewise. * testsuite/ld-x86-64/pr21997-1a.err: Likewise. * testsuite/ld-x86-64/pr21997-1b.c: Likewise. * testsuite/ld-x86-64/pr21997-1b.err: Likewise. * testsuite/ld-x86-64/pr21997-1c.c: Likewise. 2017-08-27 10:22:26 +08:00			`.text`
			`.p2align 4,,15`
			`.globl get_protected`
			`.type get_protected, @function`
			`get_protected:`
			`movl protected(%rip), %eax`
			`ret`
			`.size get_protected, .-get_protected`
			`.p2align 4,,15`
			`.globl get_protected_p`
			`.type get_protected_p, @function`
			`get_protected_p:`
			`leaq protected(%rip), %rax`
			`ret`
			`.size get_protected_p, .-get_protected_p`
			`.protected protected`
			`.globl protected`
			`.data`
			`.align 4`
			`.type protected, @object`
			`.size protected, 4`
			`protected:`
			`.long 1`
			`.section .note.GNU-stack,"",@progbits`