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67 lines
2.9 KiB
Diff
67 lines
2.9 KiB
Diff
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textrels are bad for forcing copy-on-write (this affects everyone),
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and for security/runtime code generation, this affects security ppl.
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But in either case, it doesn't matter who needs textrels, it's
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the very fact that they're needed at all.
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2006-06-10 Ned Ludd <solar@gentoo.org>, Mike Frysinger <vapier@gentoo.org>
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* bfd/elflink.c (bfd_elf_final_link): Check all objects for TEXTRELs.
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* ld/ldmain.c (main): Change textrel warning default to true.
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* ld/testsuite/lib/ld-lib.exp (default_ld_simple_link): Scrub TEXTREL
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warnings from ld output.
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diff -durN binutils-2.20.1.orig/bfd/elflink.c binutils-2.20.1/bfd/elflink.c
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--- binutils-2.20.1.orig/bfd/elflink.c 2010-08-17 19:32:11.000000000 +0200
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+++ binutils-2.20.1/bfd/elflink.c 2010-08-17 19:32:13.000000000 +0200
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@@ -10988,14 +10988,12 @@
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goto error_return;
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/* Check for DT_TEXTREL (late, in case the backend removes it). */
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- if (info->warn_shared_textrel && info->shared)
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+ o = bfd_get_section_by_name (dynobj, ".dynamic");
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+ if (info->warn_shared_textrel && o != NULL)
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{
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bfd_byte *dyncon, *dynconend;
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/* Fix up .dynamic entries. */
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- o = bfd_get_section_by_name (dynobj, ".dynamic");
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- BFD_ASSERT (o != NULL);
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-
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dyncon = o->contents;
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dynconend = o->contents + o->size;
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for (; dyncon < dynconend; dyncon += bed->s->sizeof_dyn)
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@@ -11007,7 +11005,7 @@
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if (dyn.d_tag == DT_TEXTREL)
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{
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info->callbacks->einfo
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- (_("%P: warning: creating a DT_TEXTREL in a shared object.\n"));
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+ (_("%P: warning: creating a DT_TEXTREL in object.\n"));
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break;
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}
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}
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diff -durN binutils-2.20.1.orig/ld/ldmain.c binutils-2.20.1/ld/ldmain.c
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--- binutils-2.20.1.orig/ld/ldmain.c 2009-09-14 13:43:29.000000000 +0200
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+++ binutils-2.20.1/ld/ldmain.c 2010-08-17 19:32:13.000000000 +0200
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@@ -280,6 +280,7 @@
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emulation = get_emulation (argc, argv);
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ldemul_choose_mode (emulation);
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default_target = ldemul_choose_target (argc, argv);
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+ link_info.warn_shared_textrel = TRUE;
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config.maxpagesize = bfd_emul_get_maxpagesize (default_target);
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config.commonpagesize = bfd_emul_get_commonpagesize (default_target);
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lang_init ();
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diff -durN binutils-2.20.1.orig/ld/testsuite/lib/ld-lib.exp binutils-2.20.1/ld/testsuite/lib/ld-lib.exp
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--- binutils-2.20.1.orig/ld/testsuite/lib/ld-lib.exp 2009-10-02 12:51:13.000000000 +0200
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+++ binutils-2.20.1/ld/testsuite/lib/ld-lib.exp 2010-08-17 19:32:13.000000000 +0200
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@@ -196,6 +196,10 @@
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# symbol, since the default linker script might use ENTRY.
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regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
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+ # Gentoo tweak:
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+ # We want to ignore TEXTREL warnings since we force enable them by default
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+ regsub -all "^lt-ld-new: warning: creating a DT_TEXTREL in object\." $exec_output "\\1" exec_output
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+
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if [string match "" $exec_output] then {
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return 1
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} else {
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