4debb2fbb7
xtensa-uclinux uses bFLT executable file format that cannot relocate fields representing offsets from data to code. C++ objects built as PIC use offsets to encode FDE structures. As a result C++ exception handling doesn't work correctly on xtensa-uclinux. Don't use PIC by default on xtensa-uclinux. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
42 lines
1.3 KiB
Diff
42 lines
1.3 KiB
Diff
From 960a2552f7b418134cdf7a31e96023a3811b98dd Mon Sep 17 00:00:00 2001
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From: Max Filippov <jcmvbkbc@gmail.com>
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Date: Sun, 4 Nov 2018 23:55:59 -0800
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Subject: [PATCH] gcc: xtensa: don't force PIC for uclinux target
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xtensa-uclinux uses bFLT executable file format that cannot relocate
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fields representing offsets from data to code. C++ objects built as PIC
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use offsets to encode FDE structures. As a result C++ exception handling
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doesn't work correctly on xtensa-uclinux. Don't use PIC by default on
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xtensa-uclinux.
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gcc/
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2018-11-05 Max Filippov <jcmvbkbc@gmail.com>
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* config/xtensa/uclinux.h (XTENSA_ALWAYS_PIC): Change to 0.
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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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---
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Backported from: r265823
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gcc/config/xtensa/uclinux.h | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/gcc/config/xtensa/uclinux.h b/gcc/config/xtensa/uclinux.h
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index ba26187c8f7a..c7743df9d97c 100644
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--- a/gcc/config/xtensa/uclinux.h
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+++ b/gcc/config/xtensa/uclinux.h
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@@ -59,8 +59,8 @@ along with GCC; see the file COPYING3. If not see
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#undef LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX "."
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-/* Always enable "-fpic" for Xtensa Linux. */
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-#define XTENSA_ALWAYS_PIC 1
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+/* Don't enable "-fpic" for Xtensa uclinux. */
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+#define XTENSA_ALWAYS_PIC 0
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#undef TARGET_LIBC_HAS_FUNCTION
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#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
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--
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2.11.0
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