crosstool-ng/patches/binutils/2.20/170-warn-textrel.patch
Yann E. MORIN" ac17b542fe config/binutils: add latest version 2.20
Also add patchset vampirised from Gentoo.
2009-10-27 20:06:46 +01:00

60 lines
2.2 KiB
Diff

textrels are bad for forcing copy-on-write (this affects everyone),
and for security/runtime code generation, this affects security ppl.
But in either case, it doesn't matter who needs textrels, it's
the very fact that they're needed at all.
2006-06-10 Ned Ludd <solar@gentoo.org>, Mike Frysinger <vapier@gentoo.org>
* bfd/elflink.c (bfd_elf_final_link): Check all objects for TEXTRELs.
* ld/ldmain.c (main): Change textrel warning default to true.
* ld/testsuite/lib/ld-lib.exp (default_ld_simple_link): Scrub TEXTREL
warnings from ld output.
--- bfd/elflink.c
+++ bfd/elflink.c
@@ -8652,14 +8652,12 @@
goto error_return;
/* Check for DT_TEXTREL (late, in case the backend removes it). */
- if (info->warn_shared_textrel && info->shared)
+ o = bfd_get_section_by_name (dynobj, ".dynamic");
+ if (info->warn_shared_textrel && o != NULL)
{
bfd_byte *dyncon, *dynconend;
/* Fix up .dynamic entries. */
- o = bfd_get_section_by_name (dynobj, ".dynamic");
- BFD_ASSERT (o != NULL);
-
dyncon = o->contents;
dynconend = o->contents + o->size;
for (; dyncon < dynconend; dyncon += bed->s->sizeof_dyn)
@@ -8702,7 +8702,7 @@ bfd_elf_final_link (bfd *abfd, struct bf
if (dyn.d_tag == DT_TEXTREL)
{
info->callbacks->einfo
- (_("%P: warning: creating a DT_TEXTREL in a shared object.\n"));
+ (_("%P: warning: creating a DT_TEXTREL in object.\n"));
break;
}
}
--- ld/ldmain.c
+++ ld/ldmain.c
@@ -282,2 +282,3 @@ main (int argc, char **argv)
link_info.spare_dynamic_tags = 5;
+ link_info.warn_shared_textrel = TRUE;
link_info.sharable_sections = FALSE;
--- ld/testsuite/lib/ld-lib.exp
+++ ld/testsuite/lib/ld-lib.exp
@@ -181,6 +181,10 @@ proc default_ld_simple_link { ld target
# symbol, since the default linker script might use ENTRY.
regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
+ # Gentoo tweak:
+ # We want to ignore TEXTREL warnings since we force enable them by default
+ regsub -all "^lt-ld-new: warning: creating a DT_TEXTREL in object\." $exec_output "\\1" exec_output
+
if [string match "" $exec_output] then {
return 1
} else {