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PR ld/12928

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* elf64-alpha.c (elf64_alpha_relax_tls_get_addr): Recover the
        tlsgd insn before swapping adjacent insns.
This commit is contained in:
Richard Henderson 2011-06-24 17:38:17 +00:00
parent a60af0db88
commit 7dbf3b76a2
2 changed files with 13 additions and 7 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2011-06-24 Richard Henderson <rth@redhat.com>
PR ld/12928
* elf64-alpha.c (elf64_alpha_relax_tls_get_addr): Recover the
tlsgd insn before swapping adjacent insns.
2011-06-24 Tristan Gingold <gingold@adacore.com>
* vms-alpha.c (alpha_vms_slurp_relocs): Add a guard for relocs in the

14
bfd/elf64-alpha.c
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@ -3508,6 +3508,13 @@ elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval,
pos[3] = info->contents + gpdisp->r_offset;
pos[4] = pos[3] + gpdisp->r_addend;
/* Beware of the compiler hoisting part of the sequence out a loop
and adjusting the destination register for the TLSGD insn. If this
happens, there will be a move into $16 before the JSR insn, so only
transformations of the first insn pair should use this register. */
tlsgd_reg = bfd_get_32 (info->abfd, pos[0]);
tlsgd_reg = (tlsgd_reg >> 21) & 31;
/* Generally, the positions are not allowed to be out of order, lest the
modified insn sequence have different register lifetimes. We can make
an exception when pos 1 is adjacent to pos 0. */
@ -3575,13 +3582,6 @@ elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval,
use_gottprel = FALSE;
new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : STN_UNDEF;
/* Beware of the compiler hoisting part of the sequence out a loop
and adjusting the destination register for the TLSGD insn. If this
happens, there will be a move into $16 before the JSR insn, so only
transformations of the first insn pair should use this register. */
tlsgd_reg = bfd_get_32 (info->abfd, pos[0]);
tlsgd_reg = (tlsgd_reg >> 21) & 31;
switch (!dynamic && !info->link_info->shared)
{
case 1: