[meta-xilinx] [PATCH] gcc-source_5.3: Fix MicroBlaze musl libc support

[Nathan Rossi]

Backport the patch from GCC to handle musl libc for MicroBlaze, this
patch sets up the correct path for ld.

Signed-off-by: Nathan Rossi <nathan at nathanrossi.com>
---
 .../gcc/files/microblaze-musl-support.patch        | 44 ++++++++++++++++++++++
 recipes-microblaze/gcc/gcc-source_5.3.bbappend     |  1 +
 2 files changed, 45 insertions(+)
 create mode 100644 recipes-microblaze/gcc/files/microblaze-musl-support.patch

diff --git a/recipes-microblaze/gcc/files/microblaze-musl-support.patch b/recipes-microblaze/gcc/files/microblaze-musl-support.patch
new file mode 100644
index 0000000..08370c1
--- /dev/null
+++ b/recipes-microblaze/gcc/files/microblaze-musl-support.patch
@@ -0,0 +1,44 @@
+From: nsz <nsz at 138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Thu, 15 Oct 2015 19:12:15 +0000
+Subject: [PATCH] microblaze musl support
+
+	* config/microblaze/linux.h (MUSL_DYNAMIC_LINKER): Define.
+	(DYNAMIC_LINKER): Renamed to ...
+	(GLIBC_DYNAMIC_LINKER): This.
+	(SUBTARGET_EXTRA_SPECS): Use GNU_USER_DYNAMIC_LINKER.
+
+Upstream-Status: Backport
+---
+ gcc/config/microblaze/linux.h | 14 ++++++++++++--
+ 1 file changed, 12 insertions(+), 2 deletions(-)
+
+diff --git a/gcc/config/microblaze/linux.h b/gcc/config/microblaze/linux.h
+index 655a70f..a8a3f3e 100644
+--- a/gcc/config/microblaze/linux.h
++++ b/gcc/config/microblaze/linux.h
+@@ -28,10 +28,20 @@
+ #undef TLS_NEEDS_GOT
+ #define TLS_NEEDS_GOT 1
+ 
+-#define DYNAMIC_LINKER "/lib/ld.so.1"
++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:el}"
++#endif
++
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
++
+ #undef  SUBTARGET_EXTRA_SPECS
+ #define SUBTARGET_EXTRA_SPECS \
+-  { "dynamic_linker", DYNAMIC_LINKER }
++  { "dynamic_linker", GNU_USER_DYNAMIC_LINKER }
+ 
+ #undef LINK_SPEC
+ #define LINK_SPEC "%{shared:-shared} \
+-- 
+2.6.4
+
diff --git a/recipes-microblaze/gcc/gcc-source_5.3.bbappend b/recipes-microblaze/gcc/gcc-source_5.3.bbappend
index 50075f0..63681d1 100644
--- a/recipes-microblaze/gcc/gcc-source_5.3.bbappend
+++ b/recipes-microblaze/gcc/gcc-source_5.3.bbappend
@@ -3,5 +3,6 @@
 FILESEXTRAPATHS_append := "${THISDIR}/files:"
 SRC_URI_append = " \
 		file://microblaze.md-Improve-adddi3-and-subdi3-insn-definit.patch \
+		file://microblaze-musl-support.patch \
 		"
 
-- 
2.6.4