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| author | Alan Modra <amodra@gmail.com> | 2014-02-12 16:44:36 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2014-02-12 22:10:09 +1030 |
| commit | 795bc6b3eac9e3f80279df69c05d70fc44eaaa4c (patch) | |
| tree | 05936288596641f8b197892fe10826ead1935987 /bfd | |
| parent | b407645f7ef086a9a527c8f62499b4255868e748 (diff) | |
| download | gdb-795bc6b3eac9e3f80279df69c05d70fc44eaaa4c.zip gdb-795bc6b3eac9e3f80279df69c05d70fc44eaaa4c.tar.gz gdb-795bc6b3eac9e3f80279df69c05d70fc44eaaa4c.tar.bz2 | |
Enable ppc476 workaround for ld -r.
The Linux kernel builds modules using ld -r. These might need the
ppc476 workaround, so enable it for ld -r if sections have sufficient
alignment to tell location within a page.
bfd/
* elf32-ppc.c (ppc_elf_relax_section): Enable ppc476 workaround
for ld -r, when code sections are sufficiently aligned.
* elf32-ppc.h (struct ppc_elf_params): Delete pagesize. Add
pagesize_p2.
ld/
* emultempl/ppc32elf.em (pagesize): New static var.
(ppc_after_open_output): Set params.pagesize_p2 from pagesize.
(PARSE_AND_LIST_ARGS_CASES): Adjust to use pagesize.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 7 | ||||
| -rw-r--r-- | bfd/elf32-ppc.c | 17 | ||||
| -rw-r--r-- | bfd/elf32-ppc.h | 2 |
3 files changed, 19 insertions, 7 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 391099a..120a2f5 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,12 @@ 2014-02-12 Alan Modra <amodra@gmail.com> + * elf32-ppc.c (ppc_elf_relax_section): Enable ppc476 workaround + for ld -r, when code sections are sufficiently aligned. + * elf32-ppc.h (struct ppc_elf_params): Delete pagesize. Add + pagesize_p2. + +2014-02-12 Alan Modra <amodra@gmail.com> + PR gold/15530 * elf64-ppc.c (ppc64_elf_gc_mark_dynamic_ref): Support --export-dynamic and --dynamic-list marking of symbols. diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c index 0b43b9b..f7c0366 100644 --- a/bfd/elf32-ppc.c +++ b/bfd/elf32-ppc.c @@ -6690,7 +6690,7 @@ ppc_elf_relax_section (bfd *abfd, do anything. The linker doesn't support mixing -shared and -r anyway. */ if (link_info->relocatable && link_info->shared) - return TRUE; + return TRUE; htab = ppc_elf_hash_table (link_info); if (htab == NULL) @@ -7060,16 +7060,18 @@ ppc_elf_relax_section (bfd *abfd, workaround_change = FALSE; newsize = trampoff; - if (htab->params->ppc476_workaround) + if (htab->params->ppc476_workaround + && (!link_info->relocatable + || isec->output_section->alignment_power >= htab->params->pagesize_p2)) { bfd_vma addr, end_addr; unsigned int crossings; - unsigned int pagesize = htab->params->pagesize; + bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; addr = isec->output_section->vma + isec->output_offset; end_addr = addr + trampoff - 1; addr &= -pagesize; - crossings = ((end_addr & -pagesize) - addr) / pagesize; + crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2; if (crossings != 0) { /* Keep space aligned, to ensure the patch code itself does @@ -9134,11 +9136,14 @@ ppc_elf_relocate_section (bfd *output_bfd, } if (htab->params->ppc476_workaround - && input_section->sec_info_type == SEC_INFO_TYPE_TARGET) + && input_section->sec_info_type == SEC_INFO_TYPE_TARGET + && (!info->relocatable + || (input_section->output_section->alignment_power + >= htab->params->pagesize_p2))) { struct ppc_elf_relax_info *relax_info; bfd_vma start_addr, end_addr, addr; - unsigned int pagesize = htab->params->pagesize; + bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2; relax_info = elf_section_data (input_section)->sec_info; if (relax_info->workaround_size != 0) diff --git a/bfd/elf32-ppc.h b/bfd/elf32-ppc.h index 0909245..fef177a 100644 --- a/bfd/elf32-ppc.h +++ b/bfd/elf32-ppc.h @@ -43,7 +43,7 @@ struct ppc_elf_params /* Avoid execution falling into new page. */ int ppc476_workaround; - int pagesize; + unsigned int pagesize_p2; }; void ppc_elf_link_params (struct bfd_link_info *, struct ppc_elf_params *); |