diff options
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 10 | ||||
| -rw-r--r-- | bfd/elf64-ppc.c | 198 |
2 files changed, 85 insertions, 123 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 0d60842..23350fd 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,15 @@ 2003-06-17 Alan Modra <amodra@bigpond.net.au> + * elf64-ppc.c (struct ppc_link_hash_table): Remove top_index. Modify + input_list. + (ppc64_elf_link_hash_table_create): Init input_list here. + (ppc64_elf_setup_section_lists): Remove code setting up input lists + per output section. Set toc_off for abs and other standard sections. + (ppc64_elf_reinit_toc): Don't set elf_gp on input bfds lacking a toc. + (ppc64_elf_next_input_section): Adjust for single input section list. + Don't set toc_curr from input bfds that haven't set elf_gp. + (group_sections): Adjust for single input section list. + * elf64-ppc.c (ppc64_elf_relocate_section): Correct pcrel section zero. 2003-06-16 Alan Modra <amodra@bigpond.net.au> diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c index 0536ab0..371abb1 100644 --- a/bfd/elf64-ppc.c +++ b/bfd/elf64-ppc.c @@ -2773,9 +2773,8 @@ struct ppc_link_hash_table /* Temp used when calculating TOC pointers. */ bfd_vma toc_curr; - /* Assorted information used by ppc64_elf_size_stubs. */ - int top_index; - asection **input_list; + /* List of input code sections used by ppc64_elf_size_stubs. */ + asection *input_list; /* Short-cuts to get to dynamic linker sections. */ asection *sgot; @@ -3054,6 +3053,7 @@ ppc64_elf_link_hash_table_create (abfd) htab->no_multi_toc = 0; htab->multi_toc_needed = 0; htab->toc_curr = 0; + htab->input_list = NULL; htab->sgot = NULL; htab->srelgot = NULL; htab->splt = NULL; @@ -6500,9 +6500,8 @@ ppc64_elf_setup_section_lists (output_bfd, info) struct bfd_link_info *info; { bfd *input_bfd; - int top_id, top_index; + int top_id, id; asection *section; - asection **input_list, **list; bfd_size_type amt; struct ppc_link_hash_table *htab = ppc_hash_table (info); @@ -6510,7 +6509,7 @@ ppc64_elf_setup_section_lists (output_bfd, info) return 0; /* Find the top input section id. */ - for (input_bfd = info->input_bfds, top_id = 0; + for (input_bfd = info->input_bfds, top_id = 3; input_bfd != NULL; input_bfd = input_bfd->link_next) { @@ -6528,41 +6527,11 @@ ppc64_elf_setup_section_lists (output_bfd, info) if (htab->stub_group == NULL) return -1; - elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); - - /* We can't use output_bfd->section_count here to find the top output - section index as some sections may have been removed, and - _bfd_strip_section_from_output doesn't renumber the indices. */ - for (section = output_bfd->sections, top_index = 0; - section != NULL; - section = section->next) - { - if (top_index < section->index) - top_index = section->index; - } - - htab->top_index = top_index; - amt = sizeof (asection *) * (top_index + 1); - input_list = (asection **) bfd_malloc (amt); - htab->input_list = input_list; - if (input_list == NULL) - return -1; - - /* For sections we aren't interested in, mark their entries with a - value we can check later. */ - list = input_list + top_index; - do - *list = bfd_abs_section_ptr; - while (list-- != input_list); - - for (section = output_bfd->sections; - section != NULL; - section = section->next) - { - if ((section->flags & SEC_CODE) != 0) - input_list[section->index] = NULL; - } + /* Set toc_off for com, und, abs and ind sections. */ + for (id = 0; id < 3; id++) + htab->stub_group[id].toc_off = TOC_BASE_OFF; + elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); return 1; } @@ -6601,22 +6570,10 @@ ppc64_elf_reinit_toc (output_bfd, info) struct bfd_link_info *info; { struct ppc_link_hash_table *htab = ppc_hash_table (info); - bfd *ibfd; - bfd_vma curr; /* toc_curr tracks the TOC offset used for code sections below in ppc64_elf_next_input_section. Start off at 0x8000. */ - htab->toc_curr = curr = TOC_BASE_OFF; - - /* Set the TOC base in all input bfds. Some may not have a TOC - section and thus not be set in ppc64_elf_next_toc_section. */ - for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) - { - if (elf_gp (ibfd) == 0) - elf_gp (ibfd) = curr; - else - curr = elf_gp (ibfd); - } + htab->toc_curr = TOC_BASE_OFF; } /* The linker repeatedly calls this function for each input section, @@ -6631,25 +6588,22 @@ ppc64_elf_next_input_section (info, isec) { struct ppc_link_hash_table *htab = ppc_hash_table (info); - if (isec->output_section->index <= htab->top_index) + if ((isec->output_section->flags & SEC_CODE) != 0) { - asection **list = htab->input_list + isec->output_section->index; - if (*list != bfd_abs_section_ptr) - { - /* Steal the link_sec pointer for our list. */ + /* Steal the link_sec pointer for our list. */ #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) - /* This happens to make the list in reverse order, - which is what we want. */ - PREV_SEC (isec) = *list; - *list = isec; - } + /* This happens to make the list in reverse order, + which is what we want. */ + PREV_SEC (isec) = htab->input_list; + htab->input_list = isec; } /* If a code section has a function that uses the TOC then we need to use the right TOC (obviously). Also, make sure that .opd gets the correct TOC value. */ if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0) - htab->toc_curr = elf_gp (isec->owner); + if (elf_gp (isec->owner) != 0) + htab->toc_curr = elf_gp (isec->owner); /* Functions that don't use the TOC can belong in any TOC group. Use the last TOC base. This happens to make _init and _fini @@ -6670,75 +6624,73 @@ group_sections (htab, stub_group_size, stubs_always_before_branch) bfd_size_type stub_group_size; bfd_boolean stubs_always_before_branch; { - asection **list = htab->input_list + htab->top_index; - do + asection *tail = htab->input_list; + while (tail != NULL) { - asection *tail = *list; - if (tail == bfd_abs_section_ptr) - continue; - while (tail != NULL) + asection *curr; + asection *prev; + bfd_size_type total; + bfd_boolean big_sec; + bfd_vma curr_toc; + + curr = tail; + if (tail->_cooked_size) + total = tail->_cooked_size; + else + total = tail->_raw_size; + big_sec = total >= stub_group_size; + curr_toc = htab->stub_group[tail->id].toc_off; + + while ((prev = PREV_SEC (curr)) != NULL + && ((total += (curr->output_section->vma + + curr->output_offset + - prev->output_section->vma + - prev->output_offset)) + < stub_group_size) + && htab->stub_group[prev->id].toc_off == curr_toc) + curr = prev; + + /* OK, the size from the start of CURR to the end is less + than stub_group_size and thus can be handled by one stub + section. (or the tail section is itself larger than + stub_group_size, in which case we may be toast.) We + should really be keeping track of the total size of stubs + added here, as stubs contribute to the final output + section size. That's a little tricky, and this way will + only break if stubs added make the total size more than + 2^25, ie. for the default stub_group_size, if stubs total + more than 2097152 bytes, or nearly 75000 plt call stubs. */ + do { - asection *curr; - asection *prev; - bfd_size_type total; - bfd_boolean big_sec; - bfd_vma curr_toc; - - curr = tail; - if (tail->_cooked_size) - total = tail->_cooked_size; - else - total = tail->_raw_size; - big_sec = total >= stub_group_size; - curr_toc = htab->stub_group[tail->id].toc_off; - - while ((prev = PREV_SEC (curr)) != NULL - && ((total += curr->output_offset - prev->output_offset) + prev = PREV_SEC (tail); + /* Set up this stub group. */ + htab->stub_group[tail->id].link_sec = curr; + } + while (tail != curr && (tail = prev) != NULL); + + /* But wait, there's more! Input sections up to stub_group_size + bytes before the stub section can be handled by it too. + Don't do this if we have a really large section after the + stubs, as adding more stubs increases the chance that + branches may not reach into the stub section. */ + if (!stubs_always_before_branch && !big_sec) + { + total = 0; + while (prev != NULL + && ((total += (tail->output_section->vma + + tail->output_offset + - prev->output_section->vma + - prev->output_offset)) < stub_group_size) && htab->stub_group[prev->id].toc_off == curr_toc) - curr = prev; - - /* OK, the size from the start of CURR to the end is less - than stub_group_size and thus can be handled by one stub - section. (or the tail section is itself larger than - stub_group_size, in which case we may be toast.) We - should really be keeping track of the total size of stubs - added here, as stubs contribute to the final output - section size. That's a little tricky, and this way will - only break if stubs added make the total size more than - 2^25, ie. for the default stub_group_size, if stubs total - more than 2097152 bytes, or nearly 75000 plt call stubs. */ - do { + tail = prev; prev = PREV_SEC (tail); - /* Set up this stub group. */ htab->stub_group[tail->id].link_sec = curr; } - while (tail != curr && (tail = prev) != NULL); - - /* But wait, there's more! Input sections up to stub_group_size - bytes before the stub section can be handled by it too. - Don't do this if we have a really large section after the - stubs, as adding more stubs increases the chance that - branches may not reach into the stub section. */ - if (!stubs_always_before_branch && !big_sec) - { - total = 0; - while (prev != NULL - && ((total += tail->output_offset - prev->output_offset) - < stub_group_size) - && htab->stub_group[prev->id].toc_off == curr_toc) - { - tail = prev; - prev = PREV_SEC (tail); - htab->stub_group[tail->id].link_sec = curr; - } - } - tail = prev; } + tail = prev; } - while (list-- != htab->input_list); - free (htab->input_list); #undef PREV_SEC } |