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a5b4ee9451
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.
36 lines
862 B
ArmAsm
36 lines
862 B
ArmAsm
.text
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.p2align 4,,15
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.globl get_protected
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.type get_protected, @function
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get_protected:
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call __x86.get_pc_thunk.ax
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addl $_GLOBAL_OFFSET_TABLE_, %eax
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movl protected@GOTOFF(%eax), %eax
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ret
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.size get_protected, .-get_protected
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.p2align 4,,15
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.globl get_protected_p
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.type get_protected_p, @function
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get_protected_p:
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call __x86.get_pc_thunk.ax
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addl $_GLOBAL_OFFSET_TABLE_, %eax
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leal protected@GOTOFF(%eax), %eax
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ret
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.size get_protected_p, .-get_protected_p
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.protected protected
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.globl protected
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.data
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.align 4
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.type protected, @object
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.size protected, 4
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protected:
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.long 1
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.section .text.__x86.get_pc_thunk.ax,"axG",@progbits,__x86.get_pc_thunk.ax,comdat
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.globl __x86.get_pc_thunk.ax
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.hidden __x86.get_pc_thunk.ax
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.type __x86.get_pc_thunk.ax, @function
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__x86.get_pc_thunk.ax:
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movl (%esp), %eax
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ret
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.section .note.GNU-stack,"",@progbits
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