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gcc: add patch to support musl on SuperH in gcc 5.x

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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
This commit is contained in:
Thomas Petazzoni 2017-06-09 09:49:30 +02:00
parent 1bad517846
commit 152661cde0
1 changed files with 50 additions and 0 deletions
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50
package/gcc/5.4.0/912-sh-musl-support.patch Normal file
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@ -0,0 +1,50 @@
From 6e9cad5fc3bdd0a1fa24ae172d4d4c1e3179a51c Mon Sep 17 00:00:00 2001
From: nsz <nsz@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 20 Oct 2015 18:13:15 +0000
Subject: [PATCH] musl support for sh
* config/sh/linux.h (MUSL_DYNAMIC_LINKER): Define.
(MUSL_DYNAMIC_LINKER_E, MUSL_DYNAMIC_LINKER_FP): Define.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229095 138bc75d-0d04-0410-961f-82ee72b054a4
[Thomas: backport from gcc 6.x]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
gcc/config/sh/linux.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/gcc/config/sh/linux.h b/gcc/config/sh/linux.h
index 0f5d614..61cf777 100644
--- a/gcc/config/sh/linux.h
+++ b/gcc/config/sh/linux.h
@@ -43,6 +43,27 @@ along with GCC; see the file COPYING3. If not see
#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+#if TARGET_ENDIAN_DEFAULT == MASK_LITTLE_ENDIAN
+#define MUSL_DYNAMIC_LINKER_E "%{mb:eb}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{!ml:eb}"
+#endif
+
+#if TARGET_CPU_DEFAULT & (MASK_HARD_SH2A_DOUBLE | MASK_SH4)
+/* "-nofpu" if any nofpu option is specified. */
+#define MUSL_DYNAMIC_LINKER_FP \
+ "%{m1|m2|m2a-nofpu|m3|m4-nofpu|m4-100-nofpu|m4-200-nofpu|m4-300-nofpu|" \
+ "m4-340|m4-400|m4-500|m4al:-nofpu}"
+#else
+/* "-nofpu" if none of the hard fpu options are specified. */
+#define MUSL_DYNAMIC_LINKER_FP "%{m2a|m4|m4-100|m4-200|m4-300|m4a:;:-nofpu}"
+#endif
+
+#undef MUSL_DYNAMIC_LINKER
+#define MUSL_DYNAMIC_LINKER \
+ "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E MUSL_DYNAMIC_LINKER_FP \
+ "%{mfdpic:-fdpic}.so.1"
+
#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
#undef SUBTARGET_LINK_EMUL_SUFFIX
--
2.7.4