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-rw-r--r--toolchain/binutils/patches/2.31.1/0010-xtensa-fix-relaxation-of-undefined-weak-references-i.patch48
-rw-r--r--toolchain/binutils/patches/2.31.1/0011-xtensa-move-dynamic-relocations-sections-consistency.patch90
2 files changed, 138 insertions, 0 deletions
diff --git a/toolchain/binutils/patches/2.31.1/0010-xtensa-fix-relaxation-of-undefined-weak-references-i.patch b/toolchain/binutils/patches/2.31.1/0010-xtensa-fix-relaxation-of-undefined-weak-references-i.patch
new file mode 100644
index 0000000..660d30c
--- /dev/null
+++ b/toolchain/binutils/patches/2.31.1/0010-xtensa-fix-relaxation-of-undefined-weak-references-i.patch
@@ -0,0 +1,48 @@
+From 5d3a462f05cba5b0c0c96de899b84fb84155c760 Mon Sep 17 00:00:00 2001
+From: Max Filippov <jcmvbkbc@gmail.com>
+Date: Sun, 22 Jul 2018 13:52:28 -0700
+Subject: [PATCH] xtensa: fix relaxation of undefined weak references in
+ shared objects
+
+The change c451bb34ae8b ("xtensa: don't emit dynamic relocation for weak
+undefined symbol") didn't properly handle shrinking of relocation
+sections due to coalescing of references to a dynamic undefined weak
+symbol in a shared object, which resulted in the following assertion
+failure in ld when linking uClibc-ng libthread_db for xtensa:
+
+ BFD (GNU Binutils) 2.31 internal error, aborting at elf32-xtensa.c:3269
+ in elf_xtensa_finish_dynamic_sections
+
+Shrink dynamic relocations section for dynamic undefined weak symbols
+when linking a shared object.
+
+bfd/
+2018-07-23 Max Filippov <jcmvbkbc@gmail.com>
+
+ * elf32-xtensa.c (shrink_dynamic_reloc_sections): Shrink dynamic
+ relocations section for dynamic undefined weak symbols when
+ linking a shared object.
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+Backported from: 5d3a462f05cba5b0c0c96de899b84fb84155c760
+---
+ bfd/elf32-xtensa.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
+index f7f569d0c086..a4b046e445f1 100644
+--- a/bfd/elf32-xtensa.c
++++ b/bfd/elf32-xtensa.c
+@@ -10022,7 +10022,8 @@ shrink_dynamic_reloc_sections (struct bfd_link_info *info,
+ if ((r_type == R_XTENSA_32 || r_type == R_XTENSA_PLT)
+ && (input_section->flags & SEC_ALLOC) != 0
+ && (dynamic_symbol || bfd_link_pic (info))
+- && (!h || h->root.type != bfd_link_hash_undefweak))
++ && (!h || h->root.type != bfd_link_hash_undefweak
++ || (dynamic_symbol && bfd_link_dll (info))))
+ {
+ asection *srel;
+ bfd_boolean is_plt = FALSE;
+--
+2.11.0
+
diff --git a/toolchain/binutils/patches/2.31.1/0011-xtensa-move-dynamic-relocations-sections-consistency.patch b/toolchain/binutils/patches/2.31.1/0011-xtensa-move-dynamic-relocations-sections-consistency.patch
new file mode 100644
index 0000000..2c12ce3
--- /dev/null
+++ b/toolchain/binutils/patches/2.31.1/0011-xtensa-move-dynamic-relocations-sections-consistency.patch
@@ -0,0 +1,90 @@
+From f82863d797e461b936dff2b659a3aa65088ee87e Mon Sep 17 00:00:00 2001
+From: Max Filippov <jcmvbkbc@gmail.com>
+Date: Sun, 22 Jul 2018 18:59:11 -0700
+Subject: [PATCH] xtensa: move dynamic relocations sections consistency
+ check
+
+The function elf_xtensa_finish_dynamic_sections checks that sizes of
+sections .rela.dyn and .rela.plt match number of corresponding relocation
+records, but the check is only done when .rela.plt is non-empty, so, e.g.
+it is never run for the static PIE.
+Rearrange the test so that .rela.dyn and .rela.plt are checked always.
+
+bfd/
+2018-07-23 Max Filippov <jcmvbkbc@gmail.com>
+
+ * elf32-xtensa.c (elf_xtensa_finish_dynamic_sections): Move
+ relocation sections consistency check to always check both
+ .rela.dyn and .rela.plt when they exist. Rearrange variable
+ definition and assignment places.
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+Backported from: f82863d797e461b936dff2b659a3aa65088ee87e
+---
+ bfd/elf32-xtensa.c | 22 +++++++++++-----------
+ 1 file changed, 11 insertions(+), 11 deletions(-)
+
+diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
+index a4b046e445f1..cf085b7b0751 100644
+--- a/bfd/elf32-xtensa.c
++++ b/bfd/elf32-xtensa.c
+@@ -3156,7 +3156,7 @@ elf_xtensa_finish_dynamic_sections (bfd *output_bfd,
+ {
+ struct elf_xtensa_link_hash_table *htab;
+ bfd *dynobj;
+- asection *sdyn, *srelplt, *sgot, *sxtlit, *sgotloc;
++ asection *sdyn, *srelplt, *srelgot, *sgot, *sxtlit, *sgotloc;
+ Elf32_External_Dyn *dyncon, *dynconend;
+ int num_xtlit_entries = 0;
+
+@@ -3186,15 +3186,15 @@ elf_xtensa_finish_dynamic_sections (bfd *output_bfd,
+ }
+
+ srelplt = htab->elf.srelplt;
++ srelgot = htab->elf.srelgot;
+ if (srelplt && srelplt->size != 0)
+ {
+- asection *sgotplt, *srelgot, *spltlittbl;
++ asection *sgotplt, *spltlittbl;
+ int chunk, plt_chunks, plt_entries;
+ Elf_Internal_Rela irela;
+ bfd_byte *loc;
+ unsigned rtld_reloc;
+
+- srelgot = htab->elf.srelgot;
+ spltlittbl = htab->spltlittbl;
+ BFD_ASSERT (srelgot != NULL && spltlittbl != NULL);
+
+@@ -3260,14 +3260,6 @@ elf_xtensa_finish_dynamic_sections (bfd *output_bfd,
+ spltlittbl->contents + (chunk * 8) + 4);
+ }
+
+- /* All the dynamic relocations have been emitted at this point.
+- Make sure the relocation sections are the correct size. */
+- if (srelgot->size != (sizeof (Elf32_External_Rela)
+- * srelgot->reloc_count)
+- || srelplt->size != (sizeof (Elf32_External_Rela)
+- * srelplt->reloc_count))
+- abort ();
+-
+ /* The .xt.lit.plt section has just been modified. This must
+ happen before the code below which combines adjacent literal
+ table entries, and the .xt.lit.plt contents have to be forced to
+@@ -3282,6 +3274,14 @@ elf_xtensa_finish_dynamic_sections (bfd *output_bfd,
+ spltlittbl->flags &= ~SEC_HAS_CONTENTS;
+ }
+
++ /* All the dynamic relocations have been emitted at this point.
++ Make sure the relocation sections are the correct size. */
++ if ((srelgot && srelgot->size != (sizeof (Elf32_External_Rela)
++ * srelgot->reloc_count))
++ || (srelplt && srelplt->size != (sizeof (Elf32_External_Rela)
++ * srelplt->reloc_count)))
++ abort ();
++
+ /* Combine adjacent literal table entries. */
+ BFD_ASSERT (! bfd_link_relocatable (info));
+ sxtlit = bfd_get_section_by_name (output_bfd, ".xt.lit");
+--
+2.11.0
+