From 4135c73ba23d0cffa1970681780664624ba98026 Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Fri, 10 Jul 2009 12:29:40 +0000 Subject: [PATCH] * emultempl/ppc32elf.em (ppc_before_allocation): Turn on linker relaxation if it might be necessary. --- ld/ChangeLog | 5 +++++ ld/emultempl/ppc32elf.em | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) diff --git a/ld/ChangeLog b/ld/ChangeLog index 5836c861076..8ffee592315 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,8 @@ +2009-07-10 Alan Modra + + * emultempl/ppc32elf.em (ppc_before_allocation): Turn on + linker relaxation if it might be necessary. + 2009-07-10 Alan Modra * emulparams/elf32ppc.sh (GOTPLT, PLT): Handle .iplt. diff --git a/ld/emultempl/ppc32elf.em b/ld/emultempl/ppc32elf.em index 1a93ed44927..b801df8697f 100644 --- a/ld/emultempl/ppc32elf.em +++ b/ld/emultempl/ppc32elf.em @@ -112,7 +112,40 @@ ppc_before_allocation (void) } } } + gld${EMULATION_NAME}_before_allocation (); + + /* Turn on relaxation if executable sections have addresses that + might make branches overflow. */ + if (!command_line.relax) + { + bfd_vma low = (bfd_vma) -1; + bfd_vma high = 0; + asection *o; + + /* Run lang_size_sections (if not already done). */ + if (expld.phase != lang_mark_phase_enum) + { + expld.phase = lang_mark_phase_enum; + expld.dataseg.phase = exp_dataseg_none; + one_lang_size_sections_pass (NULL, FALSE); + lang_reset_memory_regions (); + } + + for (o = link_info.output_bfd->sections; o != NULL; o = o->next) + { + if ((o->flags & (SEC_ALLOC | SEC_CODE)) != (SEC_ALLOC | SEC_CODE)) + continue; + if (o->size == 0) + continue; + if (low > o->vma) + low = o->vma; + if (high < o->vma + o->size - 1) + high = o->vma + o->size - 1; + } + if (high > low && high - low > (1 << 25) - 1) + command_line.relax = TRUE; + } } EOF -- 2.30.2