From 80d873266deca488bd8059e32780e8ce3ef6191d Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 31 Aug 2012 04:26:17 +0000 Subject: Convert mov to lea for loading local function address bfd/ * elf32-i386.c (elf_i386_relocate_section): Convert "mov foo@GOT(%reg), %reg" to "lea foo@GOTOFF(%reg), %reg" for local symbols. * elf64-x86-64.c (elf_x86_64_relocate_section): Convert "mov foo@GOTPCREL(%rip), %reg" to "lea foo(%rip), %reg" for local symbols. ld/testsuite/ * ld-i386/i386.exp: Run lea1a, lea1b, lea1c. * ld-x86-64/x86-64.exp: Run lea1a, lea1b, lea1c, lea1d, lea1e, lea1f. * ld-i386/lea1.s: New file. * ld-i386/lea1a.d: Likewise. * ld-i386/lea1b.d: Likewise. * ld-i386/lea1c.d: Likewise. * ld-x86-64/lea1.s: Likewise. * ld-x86-64/lea1a.d: Likewise. * ld-x86-64/lea1b.d: Likewise. * ld-x86-64/lea1c.d: Likewise. * ld-x86-64/lea1d.d: Likewise. * ld-x86-64/lea1e.d: Likewise. * ld-x86-64/lea1f.d: Likewise. --- bfd/ChangeLog | 10 ++++++++++ bfd/elf32-i386.c | 18 ++++++++++++++++++ bfd/elf64-x86-64.c | 16 ++++++++++++++++ 3 files changed, 44 insertions(+) (limited to 'bfd') diff --git a/bfd/ChangeLog b/bfd/ChangeLog index a26977d..c6f424a 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,13 @@ +2012-08-30 H.J. Lu + + * elf32-i386.c (elf_i386_relocate_section): Convert + "mov foo@GOT(%reg), %reg" to "lea foo@GOTOFF(%reg), %reg" + for local symbols. + + * elf64-x86-64.c (elf_x86_64_relocate_section): Convert + "mov foo@GOTPCREL(%rip), %reg" to "lea foo(%rip), %reg" + for local symbols. + 2012-08-31 Alan Modra PR ld/14464 diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index 7d3652d..e67879f 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -3470,6 +3470,24 @@ elf_i386_relocate_section (bfd *output_bfd, if (off >= (bfd_vma) -2) abort (); + if (h != NULL + && h->def_regular + && SYMBOL_REFERENCES_LOCAL (info, h) + && bfd_get_8 (input_bfd, + contents + rel->r_offset - 2) == 0x8b) + { + /* Convert + mov foo@GOT(%reg), %reg + to + lea foo@GOTOFF(%reg), %reg + */ + bfd_put_8 (output_bfd, 0x8d, + contents + rel->r_offset - 2); + relocation -= (htab->elf.sgotplt->output_section->vma + + htab->elf.sgotplt->output_offset); + break; + } + relocation = htab->elf.sgot->output_section->vma + htab->elf.sgot->output_offset + off - htab->elf.sgotplt->output_section->vma diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c index a29ba8a..cc40404 100644 --- a/bfd/elf64-x86-64.c +++ b/bfd/elf64-x86-64.c @@ -3460,6 +3460,22 @@ elf_x86_64_relocate_section (bfd *output_bfd, if (off >= (bfd_vma) -2) abort (); + if (r_type == R_X86_64_GOTPCREL + && h->def_regular + && SYMBOL_REFERENCES_LOCAL (info, h) + && bfd_get_8 (input_bfd, + contents + rel->r_offset - 2) == 0x8b) + { + /* Convert + mov foo@GOTPCREL(%rip), %reg + to + lea foo(%rip), %reg + */ + bfd_put_8 (output_bfd, 0x8d, + contents + rel->r_offset - 2); + break; + } + relocation = base_got->output_section->vma + base_got->output_offset + off; if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64) -- cgit v1.1