File ppc-ensure-undef-dynamic-weak-undefined.patch of Package binutils

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File ppc-ensure-undef-dynamic-weak-undefined.patch of Package binutils (Revision eb7edf51e15b3fb85b7c3b8375003a0c)

Currently displaying revision eb7edf51e15b3fb85b7c3b8375003a0c , Show latest

From b293661219c36e72acb80502a86b51160bb88cfd Mon Sep 17 00:00:00 2001
From: Alan Modra <amodra@gmail.com>
Date: Mon, 3 May 2021 10:03:06 +0930
Subject: [PATCH] PPC: ensure_undef_dynamic on weak undef only in plt

It's slightly weird to have a call to a weak function not protected by
a test of that function being non-NULL, but the non-NULL test might be
covered by a test of another function.  For example:
  if (func1)
    {
      func1 ();
      func2 ();
    }
where func2 is known to exist if func1 exists.

* elf32-ppc.c (allocate_dynrelocs): Call ensure_undef_dynamic for
	weak undefined symols that only appear on PLT relocs.
	* elf64-ppc.c (allocate_dynrelocs): Likewise.
---
 bfd/ChangeLog   | 6 ++++++
 bfd/elf32-ppc.c | 9 +++++++--
 bfd/elf64-ppc.c | 3 +++
 3 files changed, 16 insertions(+), 2 deletions(-)

Index: binutils-2.36/bfd/elf32-ppc.c
===================================================================
--- binutils-2.36.orig/bfd/elf32-ppc.c
+++ binutils-2.36/bfd/elf32-ppc.c
@@ -5289,8 +5289,12 @@ allocate_dynrelocs (struct elf_link_hash
       for (ent = h->plt.plist; ent != NULL; ent = ent->next)
 	if (ent->plt.refcount > 0)
 	  {
-	    asection *s = htab->elf.splt;
+	    asection *s;
 
+	    if (!ensure_undef_dynamic (info, h))
+	      return FALSE;
+
+	    s = htab->elf.splt;
 	    if (!dyn)
 	      {
 		if (h->type == STT_GNU_IFUNC)
Index: binutils-2.36/bfd/elf64-ppc.c
===================================================================
--- binutils-2.36.orig/bfd/elf64-ppc.c
+++ binutils-2.36/bfd/elf64-ppc.c
@@ -9824,6 +9824,9 @@ allocate_dynrelocs (struct elf_link_hash
       for (pent = h->plt.plist; pent != NULL; pent = pent->next)
 	if (pent->plt.refcount > 0)
 	  {
+	    if (!ensure_undef_dynamic (info, h))
+	      return FALSE;
+
 	    if (!htab->elf.dynamic_sections_created
 		|| h->dynindx == -1)
 	      {

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File ppc-ensure-undef-dynamic-weak-undefined.patch of Package binutils (Revision eb7edf51e15b3fb85b7c3b8375003a0c)

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