When a writable input section (i.e. data) refers to a symbol defined in an ET_DYN object, BFD ld for ARM targets generates a COPY dynamic reloc. For other targets like x86, this situation generates a plain data dynamic reloc. Gold for ARM also generates the plain data dynamic reloc. https://bugzilla.suse.com/show_bug.cgi?id=1200962 https://sourceware.org/bugzilla/show_bug.cgi?id=16177 --- bfd/elf32-arm.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) Index: binutils-2.39/bfd/elf32-arm.c =================================================================== --- binutils-2.39.orig/bfd/elf32-arm.c +++ binutils-2.39/bfd/elf32-arm.c @@ -16196,6 +16196,21 @@ elf32_arm_adjust_dynamic_symbol (struct if (bfd_link_pic (info) || globals->root.is_relocatable_executable) return true; + /* If -z nocopyreloc was given, we won't generate them either. */ + if (info->nocopyreloc) + { + h->non_got_ref = 0; + return true; + } + + /* If we don't find any dynamic relocs in read-only sections, then + we'll be keeping the dynamic relocs and avoiding the copy reloc. */ + if (!_bfd_elf_readonly_dynrelocs (h)) + { + h->non_got_ref = 0; + return true; + } + /* We must allocate the symbol in our .dynbss section, which will become part of the .bss section of the executable. There will be an entry for this symbol in the .dynsym section. The dynamic @@ -16205,9 +16220,9 @@ elf32_arm_adjust_dynamic_symbol (struct determine the address it must put in the global offset table, so both the dynamic object and the regular object will refer to the same memory location for the variable. */ - /* If allowed, we must generate a R_ARM_COPY reloc to tell the dynamic - linker to copy the initial value out of the dynamic object and into - the runtime process image. We need to remember the offset into the + /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to + copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the .rel(a).bss section we are going to use. */ if ((h->root.u.def.section->flags & SEC_READONLY) != 0) { @@ -16219,9 +16234,7 @@ elf32_arm_adjust_dynamic_symbol (struct s = globals->root.sdynbss; srel = globals->root.srelbss; } - if (info->nocopyreloc == 0 - && (h->root.u.def.section->flags & SEC_ALLOC) != 0 - && h->size != 0) + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) { elf32_arm_allocate_dynrelocs (info, srel, 1); h->needs_copy = 1;