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6 Commits

Author SHA1 Message Date
Andreas Krebbel 643f7afb0d S/390: z13 use GNU attribute to indicate vector ABI 
bfd/
	* elf-s390-common.c (elf_s390_merge_obj_attributes): New function.
	* elf32-s390.c (elf32_s390_merge_private_bfd_data): Call
	elf_s390_merge_obj_attributes.
	* elf64-s390.c (elf64_s390_merge_private_bfd_data): New function.

binutils/
	* readelf.c (display_s390_gnu_attribute): New function.
	(process_s390_specific): New function.
	(process_arch_specific): Call process_s390_specific.

gas/
	* doc/as.texinfo: Document Tag_GNU_S390_ABI_Vector.

include/elf/
	* s390.h: Define Tag_GNU_S390_ABI_Vector.
 2015-04-27 10:32:23 +02:00
Andreas Krebbel b9005ba76e S/390: Disable relocation sort against code sections. 
When downgrading from GD to IE model we rewrite the call to
__tls_get_offset to a 64 bit load instruction. This relies on the fact
that the additional relocation for the call target has already been
executed when doing the rewrite.

   f1018:       e3 20 d0 00 00 04       lg      %r2,0(%r13)
   f101e:       c0 e5 00 00 00 00       brasl   %r14,f101e <__res_init+0x1e>
                        f101e: R_390_TLS_GDCALL __libc_resp
                        f1020: R_390_PLT32DBL   __tls_get_offset+0x2

0000000f1020  39f6c00000014 R_390_PLT32DBL    0000000000000000 __tls_get_offset + 2
0000000f101e  3afb700000026 R_390_TLS_GDCALL  0000000000000008 __libc_resp + 0

Due to the reloc sorting the order changed an the PLT32DBL reloc is
executed after the rewrite and overwrites part of the load instruction
with garbage.

bfd/
2015-03-14  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* elf-s390-common.c (elf_s390_elf_sort_relocs_p): Don't sort
	relocs against code sections.
	* elf32-s390.c: Define elf_backend_sort_relocs_p.
	* elf64-s390.c: Likewise.
 2015-03-14 11:45:05 +01:00
Alan Modra b90efa5b79 ChangeLog rotatation and copyright year update 2015-01-02 00:53:45 +10:30
Alan Modra f1885d1e59 Fix 17492, ld segfault with --oformat=binary 
PR 17492
	* elf32-arm.c (elf32_arm_add_symbol_hook): Only set has_gnu_symbols
	on ELF output bfd.
	* elf32-i386.c (elf_i386_add_symbol_hook): Likewise.
	* elf32-m68k.c (elf_m68k_add_symbol_hook): Likewise.
	* elf32-ppc.c (ppc_elf_add_symbol_hook): Likewise.
	* elf32-sparc.c (elf32_sparc_add_symbol_hook): Likewise.
	* elf64-ppc.c (ppc64_elf_add_symbol_hook): Likewise.
	* elf64-sparc.c (elf64_sparc_add_symbol_hook): Likewise.
	* elf64-x86-64.c (elf_x86_64_add_symbol_hook): Likewise.
	* elfxx-aarch64.c (_bfd_aarch64_elf_add_symbol_hook): Likewise.
	* elf-s390-common.c (elf_s390_add_symbol_hook): Likewise.  Handle
	STB_GNU_UNIQUE too.
 2014-10-16 21:18:16 +10:30
Alan Modra 4b95cf5c0c Update copyright years 2014-03-05 22:16:15 +10:30
Andreas Krebbel 470b557aaf 2012-07-13 Andreas Krebbel <Andreas.Krebbel@de.ibm.com> 
* elf64-s390.c: Include elf-s390-common.c.
	(R_390_IRELATIVE): New reloc.
	(elf_s390_reloc_type_lookup): Support R_390_IRELATIVE.
	(RELA_ENTRY_SIZE): New macro.
	(elf_s390_link_hash_entry): New fields ifunc_resolver_address and
	*ifunc_resolver_section.
	(struct plt_entry): New struct.
	(struct elf_s390_obj_tdata): New field local_plt.
	(elf_s390_local_plt): New macro.
	(struct elf_s390_link_hash_table): New field irelifunc.
	(ELF64): New macro.
	(link_hash_newfunc): Initialize new fields.
	(elf_s390_check_relocs): Handle IFUNC symbols.
	(elf_s390_adjust_dynamic_symbol): Don't do anything for IFUNC
	symbols.
	(allocate_dynrelocs): Call s390_elf_allocate_ifunc_dyn_relocs for
	IFUNC symbols.
	(elf_s390_size_dynamic_sections): Handle IFUNC symbols.
	(elf_s390_relocate_section): Likewise.
	(elf_s390_finish_dynamic_symbol): Likewise.
	(elf_s390_finish_dynamic_sections): Handle local IFUNC symbols.
	(elf_s390_finish_ifunc_symbol): New function.
	(elf_s390_gc_sweep_hook): Handle local plt entries.
	(elf_backend_add_symbol_hook): Define.
	* elf32-s390.c: See elf64-s390.c changes.
	* elf-s390-common.c: New file.
	* bfd-in2.h (BFD_RELOC_390_IRELATIVE): New enum field.
	* libbfd.h (BFD_RELOC_390_IRELATIVE): New entry for
	BFD_RELOC_390_IRELATIVE.
	* reloc.c (BFD_RELOC_390_IRELATIVE): Document new relocation.

2012-07-13  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* elf/s390.h (START_RELOC_NUMBERS): Define R_390_IRELATIVE reloc.

2012-07-13  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* emulparams/elf_s390.sh (IREL_IN_PLT): Define.
	* emulparams/elf64_s390.sh (IREL_IN_PLT): Define.
 2012-07-13 15:47:27 +00:00