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58 lines
1.9 KiB
Diff
58 lines
1.9 KiB
Diff
From 8ec76b16f62d1bf386fb2c39af5f66c3afddc5cb Mon Sep 17 00:00:00 2001
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From: Max Filippov <jcmvbkbc@gmail.com>
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Date: Thu, 14 May 2015 05:22:55 +0300
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Subject: [PATCH] xtensa: fix localized symbol refcounting with --gc-sections
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elf_xtensa_gc_sweep_hook doesn't correctly unreference symbols that were
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made local, that results in link failure with the following message:
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BFD (GNU Binutils) 2.24 internal error, aborting at elf32-xtensa.c line
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3372 in elf_xtensa_finish_dynamic_sections
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elf_xtensa_gc_sweep_hook determines symbol reference type (PLT or GOT) by
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relocation type. Relocation types are not changed when symbol becomes
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local, but its PLT references are added to GOT references and
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plt.refcount is set to 0. Such symbol cannot be unreferences in the
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elf_xtensa_gc_sweep_hook and its extra references make calculated GOT
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relocations section size not match number of GOT relocations.
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Fix it by treating PLT reference as GOT reference when plt.refcount is
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not positive.
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2015-05-14 Max Filippov <jcmvbkbc@gmail.com>
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bfd/
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* elf32-xtensa.c (elf_xtensa_gc_sweep_hook): Treat PLT reference
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as GOT reference when plt.refcount is not positive.
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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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---
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Backported from: e6c9a083ec5ae7a45bd71682b26aae1939849388
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Changes to ChangeLog are dropped.
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bfd/elf32-xtensa.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
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index 53af1c6..2523670 100644
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--- a/bfd/elf32-xtensa.c
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+++ b/bfd/elf32-xtensa.c
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@@ -1360,10 +1360,14 @@ elf_xtensa_gc_sweep_hook (bfd *abfd,
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{
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if (is_plt)
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{
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+ /* If the symbol has been localized its plt.refcount got moved
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+ to got.refcount. Handle it as GOT. */
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if (h->plt.refcount > 0)
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h->plt.refcount--;
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+ else
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+ is_got = TRUE;
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}
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- else if (is_got)
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+ if (is_got)
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{
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if (h->got.refcount > 0)
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h->got.refcount--;
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--
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1.8.1.4
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