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authorIgor Zamyatin <igor.zamyatin@intel.com>2014-11-18 10:52:36 +0300
committerH.J. Lu <hjl.tools@gmail.com>2014-11-18 05:40:17 -0800
commitd258b828287a863376af60a1ef7ceafbccc83d93 (patch)
treeac8f8a3251ce8afda52a8a190099042fc4b8baca /include
parent470e2f4e300e5f84b1c35070df43d69b501e0b91 (diff)
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Add -z bndplt to generate BND prefix in PLT entries
This patch adds "-z bndplt" option Linux/x86-64 linker to generate BND prefix in PLT entries. It also updated Linux/x86-64 assembler not to generate R_X86_64_PLT32_BND nor R_X86_64_PC32_BND relocations. bfd/ 2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com> * elf64-x86-64.c (elf_x86_64_check_relocs): Enable MPX PLT only for -z bndplt. gas/ 2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com> * config/tc-i386-intel.c (i386_operator): Remove last argument from lex_got call. * config/tc-i386.c (reloc): Remove bnd_prefix from parameters' list. Return always BFD_RELOC_32_PCREL. * (output_branch): Remove condition for BFD_RELOC_X86_64_PC32_BND. * (output_jump): Update call to reloc accordingly. * (output_interseg_jump): Likewise. * (output_disp): Likewise. * (output_imm): Likewise. * (x86_cons_fix_new): Likewise. * (lex_got): Remove bnd_prefix from parameters' list in macro and declarations. Don't use BFD_RELOC_X86_64_PLT32_BND. * (x86_cons): Update call to lex_got accordingly. * (i386_immediate): Likewise. * (i386_displacement): Likewise. * (md_apply_fix): Don't use BFD_RELOC_X86_64_PLT32_BND nor BFD_RELOC_X86_64_PC32_BND. * (tc_gen_reloc): Likewise. include/ 2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com> * bfdlink.h (struct bfd_link_info): Add bndplt. ld/ 2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com> * emulparams/elf_x86_64.sh (BNDPLT): Set to yes for x86_64. * emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Handle "-z bndplt" if BNDPLT is yes. (gld${EMULATION_NAME}_list_options): Add "-z bndplt" entry. * ld.texinfo: Add description for bndplt. ld/testsuite/ 2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com> * testsuite/ld-x86-64/bnd-ifunc-1.d: Add bndplt option. * testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise. * testsuite/ld-x86-64/bnd-plt-1.d: Likewise. Update dissassembly sections. * testsuite/ld-x86-64/mpx.exp: Handle mpx3 and mpx4 tests. * testsuite/ld-x86-64/mpx1a.rd: Remove _BND from relocation name. * testsuite/ld-x86-64/mpx1c.rd: Likewise. * testsuite/ld-x86-64/mpx2a.rd: Likewise. * testsuite/ld-x86-64/mpx2c.rd: Likewise. * testsuite/ld-x86-64/mpx3.dd: New file. * testsuite/ld-x86-64/mpx3a.s: Likewise. * testsuite/ld-x86-64/mpx3b.s: Likewise. * testsuite/ld-x86-64/mpx4.dd: Likewise. * testsuite/ld-x86-64/mpx4a.s: Likewise. * testsuite/ld-x86-64/mpx4b.s: Likewise.
Diffstat (limited to 'include')
-rw-r--r--include/ChangeLog4
-rw-r--r--include/bfdlink.h3
2 files changed, 7 insertions, 0 deletions
diff --git a/include/ChangeLog b/include/ChangeLog
index 0204432..bcd9b28 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2014-11-18 Igor Zamyatin <igor.zamyatin@intel.com>
+
+ * bfdlink.h (struct bfd_link_info): Add bndplt.
+
2014-10-30 Andrew Pinski <apinski@cavium.com>
* elf/mips.h (AFL_EXT_OCTEON3): Define.
diff --git a/include/bfdlink.h b/include/bfdlink.h
index 125683d..f3181ba 100644
--- a/include/bfdlink.h
+++ b/include/bfdlink.h
@@ -417,6 +417,9 @@ struct bfd_link_info
/* TRUE if the linker script contained an explicit PHDRS command. */
unsigned int user_phdrs: 1;
+ /* TRUE if BND prefix in PLT entries is always generated. */
+ unsigned int bndplt: 1;
+
/* Char that may appear as the first char of a symbol, but should be
skipped (like symbol_leading_char) when looking up symbols in
wrap_hash. Used by PowerPC Linux for 'dot' symbols. */