gcc: add patch to support musl on SuperH in gcc 5.x
Building a toolchain for SuperH/musl works, but the toolchain generate bogus binaries, because the path to the program interpreter is not known (and therefore is /dev/null). This commit backports a patch from gcc 6.x to make SuperH support with musl work properly. The patch is not needed in gcc >= 6.x because the musl support is upstream. The patch is not needed for gcc 4.9 because we had a different musl support patch that had support for all architectures in one patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> --- Changes since v2: - None Changes since v1: - New patch in the series
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package/gcc/5.4.0/912-sh-musl-support.patch
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package/gcc/5.4.0/912-sh-musl-support.patch
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From 6e9cad5fc3bdd0a1fa24ae172d4d4c1e3179a51c Mon Sep 17 00:00:00 2001
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From: nsz <nsz@138bc75d-0d04-0410-961f-82ee72b054a4>
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Date: Tue, 20 Oct 2015 18:13:15 +0000
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Subject: [PATCH] musl support for sh
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* config/sh/linux.h (MUSL_DYNAMIC_LINKER): Define.
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(MUSL_DYNAMIC_LINKER_E, MUSL_DYNAMIC_LINKER_FP): Define.
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git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229095 138bc75d-0d04-0410-961f-82ee72b054a4
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[Thomas: backport from gcc 6.x]
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Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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---
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gcc/config/sh/linux.h | 21 +++++++++++++++++++++
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1 file changed, 21 insertions(+)
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diff --git a/gcc/config/sh/linux.h b/gcc/config/sh/linux.h
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index 0f5d614..61cf777 100644
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--- a/gcc/config/sh/linux.h
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+++ b/gcc/config/sh/linux.h
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@@ -43,6 +43,27 @@ along with GCC; see the file COPYING3. If not see
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#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
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+#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
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+#define MUSL_DYNAMIC_LINKER_E "%{mb:eb}"
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+#else
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+#define MUSL_DYNAMIC_LINKER_E "%{!ml:eb}"
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+#endif
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+
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+#if TARGET_CPU_DEFAULT & (MASK_HARD_SH2A_DOUBLE | MASK_SH4)
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+/* "-nofpu" if any nofpu option is specified. */
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+#define MUSL_DYNAMIC_LINKER_FP \
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+ "%{m1|m2|m2a-nofpu|m3|m4-nofpu|m4-100-nofpu|m4-200-nofpu|m4-300-nofpu|" \
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+ "m4-340|m4-400|m4-500|m4al:-nofpu}"
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+#else
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+/* "-nofpu" if none of the hard fpu options are specified. */
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+#define MUSL_DYNAMIC_LINKER_FP "%{m2a|m4|m4-100|m4-200|m4-300|m4a:;:-nofpu}"
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+#endif
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+
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+#undef MUSL_DYNAMIC_LINKER
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+#define MUSL_DYNAMIC_LINKER \
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+ "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E MUSL_DYNAMIC_LINKER_FP \
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+ "%{mfdpic:-fdpic}.so.1"
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+
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#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
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#undef SUBTARGET_LINK_EMUL_SUFFIX
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--
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2.7.4
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