diff options
| -rw-r--r-- | bfd/ChangeLog | 13 | ||||
| -rw-r--r-- | bfd/elfxx-ia64.c | 102 |
2 files changed, 104 insertions, 11 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 6166526..113ddf8 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,16 @@ +2009-11-17 H.J. Lu <hongjiu.lu@intel.com> + + PR ld/10955 + * elfxx-ia64.c (elfNN_ia64_link_hash_table): Add max_short_sec, + max_short_offset, min_short_sec and min_short_offset. + (elfNN_ia64_update_short_info): New. + (elfNN_ia64_relax_section): Update max_short_sec, + max_short_offset, min_short_sec and min_short_offset. + (elfNN_ia64_choose_gp): Use min_short_sec/max_short_sec if + they are set. + 2009-11-17 Paul Brook <paul@codesourcery.com> - Daniel Jacobowitz <dan@codesourcery.com> + Daniel Jacobowitz <dan@codesourcery.com> * elf32-arm.c (using_thumb_only, arch_has_arm_nop, arch_has_thumb2_nop): Handle TAG_CPU_ARCH_V7E_M. diff --git a/bfd/elfxx-ia64.c b/bfd/elfxx-ia64.c index 932886b..5bf4d9e 100644 --- a/bfd/elfxx-ia64.c +++ b/bfd/elfxx-ia64.c @@ -172,6 +172,14 @@ struct elfNN_ia64_link_hash_table unsigned reltext : 1; /* are there relocs against readonly sections? */ unsigned self_dtpmod_done : 1;/* has self DTPMOD entry been finished? */ bfd_vma self_dtpmod_offset; /* .got offset to self DTPMOD entry */ + /* There are maybe R_IA64_GPREL22 relocations, including those + optimized from R_IA64_LTOFF22X, against non-SHF_IA_64_SHORT + sections. We need to record those sections so that we can choose + a proper GP to cover all R_IA64_GPREL22 relocations. */ + asection *max_short_sec; /* maximum short section */ + bfd_vma max_short_offset; /* maximum short offset */ + asection *min_short_sec; /* minimum short section */ + bfd_vma min_short_offset; /* minimum short offset */ htab_t loc_hash_table; void *loc_hash_memory; @@ -752,6 +760,41 @@ elfNN_ia64_relax_brl (bfd_byte *contents, bfd_vma off) /* These functions do relaxation for IA-64 ELF. */ +static void +elfNN_ia64_update_short_info (asection *sec, bfd_vma offset, + struct elfNN_ia64_link_hash_table *ia64_info) +{ + /* Skip SHF_IA_64_SHORT sections. */ + if (sec->flags & SEC_SMALL_DATA) + return; + + if (!ia64_info->min_short_sec) + { + ia64_info->max_short_sec = sec; + ia64_info->max_short_offset = offset; + ia64_info->min_short_sec = sec; + ia64_info->min_short_offset = offset; + } + else if (sec == ia64_info->max_short_sec + && offset > ia64_info->max_short_offset) + ia64_info->max_short_offset = offset; + else if (sec == ia64_info->min_short_sec + && offset < ia64_info->min_short_offset) + ia64_info->min_short_offset = offset; + else if (sec->output_section->vma + > ia64_info->max_short_sec->output_section->vma) + { + ia64_info->max_short_sec = sec; + ia64_info->max_short_offset = offset; + } + else if (sec->output_section->vma + < ia64_info->min_short_sec->output_section->vma) + { + ia64_info->min_short_sec = sec; + ia64_info->min_short_offset = offset; + } +} + static bfd_boolean elfNN_ia64_relax_section (bfd *abfd, asection *sec, struct bfd_link_info *link_info, @@ -855,6 +898,9 @@ elfNN_ia64_relax_section (bfd *abfd, asection *sec, is_branch = TRUE; break; + case R_IA64_GPREL22: + /* Update max_short_sec/min_short_sec. */ + case R_IA64_LTOFF22X: case R_IA64_LDXMOV: /* We can't relax ldx/mov in pass 0 since br relaxations will @@ -1171,7 +1217,11 @@ elfNN_ia64_relax_section (bfd *abfd, asection *sec, ||(bfd_signed_vma) (symaddr - gp) < -0x200000) continue; - if (r_type == R_IA64_LTOFF22X) + if (r_type == R_IA64_GPREL22) + elfNN_ia64_update_short_info (tsec, + tsec->output_offset + toff, + ia64_info); + else if (r_type == R_IA64_LTOFF22X) { irel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (irel->r_info), R_IA64_GPREL22); @@ -1181,6 +1231,10 @@ elfNN_ia64_relax_section (bfd *abfd, asection *sec, dyn_i->want_gotx = 0; changed_got |= !dyn_i->want_got; } + + elfNN_ia64_update_short_info (tsec, + tsec->output_offset + toff, + ia64_info); } else { @@ -4256,6 +4310,20 @@ elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info) } } + if (ia64_info->min_short_sec) + { + if (min_short_vma + > (ia64_info->min_short_sec->output_section->vma + + ia64_info->min_short_offset)) + min_short_vma = (ia64_info->min_short_sec->output_section->vma + + ia64_info->min_short_offset); + if (max_short_vma + < (ia64_info->max_short_sec->output_section->vma + + ia64_info->max_short_offset)) + max_short_vma = (ia64_info->max_short_sec->output_section->vma + + ia64_info->max_short_offset); + } + /* See if the user wants to force a value. */ gp = elf_link_hash_lookup (elf_hash_table (info), "__gp", FALSE, FALSE, FALSE); @@ -4273,17 +4341,30 @@ elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info) { /* Pick a sensible value. */ - asection *got_sec = ia64_info->root.sgot; + if (ia64_info->min_short_sec) + { + bfd_vma short_range = max_short_vma - min_short_vma; - /* Start with just the address of the .got. */ - if (got_sec) - gp_val = got_sec->output_section->vma; - else if (max_short_vma != 0) - gp_val = min_short_vma; - else if (max_vma - min_vma < 0x200000) - gp_val = min_vma; + /* If min_short_sec is set, pick one in the middle bewteen + min_short_vma and max_short_vma. */ + if (short_range >= 0x400000) + goto overflow; + gp_val = min_short_vma + short_range / 2; + } else - gp_val = max_vma - 0x200000 + 8; + { + asection *got_sec = ia64_info->root.sgot; + + /* Start with just the address of the .got. */ + if (got_sec) + gp_val = got_sec->output_section->vma; + else if (max_short_vma != 0) + gp_val = min_short_vma; + else if (max_vma - min_vma < 0x200000) + gp_val = min_vma; + else + gp_val = max_vma - 0x200000 + 8; + } /* If it is possible to address the entire image, but we don't with the choice above, adjust. */ @@ -4310,6 +4391,7 @@ elfNN_ia64_choose_gp (bfd *abfd, struct bfd_link_info *info) { if (max_short_vma - min_short_vma >= 0x400000) { +overflow: (*_bfd_error_handler) (_("%s: short data segment overflowed (0x%lx >= 0x400000)"), bfd_get_filename (abfd), |