[OE-core] [PATCH] libunwind: backport aarch64_be support

[Ruslan Bilovol]

Backport 2 patches from v1.2-rc1 tag of libunwind git repo.
These patches add aarch64_be support to this package.

Signed-off-by: Ruslan Bilovol <rbilovol at cisco.com>
---
 ...roduce-build-support-for-aarch64_be-targe.patch | 33 +++++++++++++++++++++
 ...-wrong-big_endian-flag-in-aarch64_be-case.patch | 34 ++++++++++++++++++++++
 meta/recipes-support/libunwind/libunwind_1.1.bb    |  2 ++
 3 files changed, 69 insertions(+)
 create mode 100644 meta/recipes-support/libunwind/libunwind-1.1/0001-aarch64-introduce-build-support-for-aarch64_be-targe.patch
 create mode 100644 meta/recipes-support/libunwind/libunwind-1.1/0002-aarch64-fix-wrong-big_endian-flag-in-aarch64_be-case.patch

diff --git a/meta/recipes-support/libunwind/libunwind-1.1/0001-aarch64-introduce-build-support-for-aarch64_be-targe.patch b/meta/recipes-support/libunwind/libunwind-1.1/0001-aarch64-introduce-build-support-for-aarch64_be-targe.patch
new file mode 100644
index 0000000..b8afb90
--- /dev/null
+++ b/meta/recipes-support/libunwind/libunwind-1.1/0001-aarch64-introduce-build-support-for-aarch64_be-targe.patch
@@ -0,0 +1,33 @@
+From 743668f66916b6bb03c92b04be5216400951ace6 Mon Sep 17 00:00:00 2001
+From: Victor Kamensky <victor.kamensky at linaro.org>
+Date: Wed, 3 Dec 2014 17:35:43 -0800
+Subject: [PATCH 1/2] aarch64: introduce build support for aarch64_be target
+
+Upstream-Status: backport
+
+Introduce support for aarch64_be, aarch64 big endian, target.
+We would like to reuse all code that was done for aarch64
+(little endian) target. So we do similar thing that is done
+for ARM v7 (arm) target for any aarch64* arch we set it
+just to aarch64.
+
+Signed-off-by: Victor Kamensky <victor.kamensky at linaro.org>
+---
+ configure.ac | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/configure.ac b/configure.ac
+index 582e71f..c59f526 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -88,6 +88,7 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ 
+ AC_DEFUN([SET_ARCH],[
+     AS_CASE([$1],
++        [aarch64*],[$2=aarch64],
+         [arm*],[$2=arm],
+         [i?86],[$2=x86],
+         [hppa*],[$2=hppa],
+-- 
+1.9.1
+
diff --git a/meta/recipes-support/libunwind/libunwind-1.1/0002-aarch64-fix-wrong-big_endian-flag-in-aarch64_be-case.patch b/meta/recipes-support/libunwind/libunwind-1.1/0002-aarch64-fix-wrong-big_endian-flag-in-aarch64_be-case.patch
new file mode 100644
index 0000000..2ae4477
--- /dev/null
+++ b/meta/recipes-support/libunwind/libunwind-1.1/0002-aarch64-fix-wrong-big_endian-flag-in-aarch64_be-case.patch
@@ -0,0 +1,34 @@
+From 16e98c8cf37b006c3879ee57acc23c9af13c40d5 Mon Sep 17 00:00:00 2001
+From: Victor Kamensky <victor.kamensky at linaro.org>
+Date: Wed, 3 Dec 2014 17:35:44 -0800
+Subject: [PATCH 2/2] aarch64: fix wrong big_endian flag in aarch64_be case
+
+Upstream-Status: backport
+
+Set local_addr_space.big_endian flag according to current target
+endianness. Before it was set by memset to 0, which corresponds
+to little endian and it worked perfectly fine for aarch64.
+But it breaks aarch64_be because dwarf_readu16, dwarf_readu32,
+etc functions do not read values correctly since they operate
+with wrong idea about current target endianness.
+
+Signed-off-by: Victor Kamensky <victor.kamensky at linaro.org>
+---
+ src/aarch64/Ginit.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/aarch64/Ginit.c b/src/aarch64/Ginit.c
+index 0bc8997..b9181ef 100644
+--- a/src/aarch64/Ginit.c
++++ b/src/aarch64/Ginit.c
+@@ -181,6 +181,7 @@ aarch64_local_addr_space_init (void)
+   local_addr_space.acc.access_fpreg = access_fpreg;
+   local_addr_space.acc.resume = aarch64_local_resume;
+   local_addr_space.acc.get_proc_name = get_static_proc_name;
++  local_addr_space.big_endian = (__BYTE_ORDER == __BIG_ENDIAN);
+   unw_flush_cache (&local_addr_space, 0, 0);
+ }
+ 
+-- 
+1.9.1
+
diff --git a/meta/recipes-support/libunwind/libunwind_1.1.bb b/meta/recipes-support/libunwind/libunwind_1.1.bb
index aff8409..1e76c1a 100644
--- a/meta/recipes-support/libunwind/libunwind_1.1.bb
+++ b/meta/recipes-support/libunwind/libunwind_1.1.bb
@@ -8,6 +8,8 @@ SRC_URI = "${SAVANNAH_NONGNU_MIRROR}/${BPN}/${BPN}-${PV}.tar.gz \
            file://0001-Invalid-dwarf-opcodes-can-cause-references-beyond-th.patch \
            file://Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch \
            file://0001-backtrace-Use-only-with-glibc-and-uclibc.patch \
+           file://0001-aarch64-introduce-build-support-for-aarch64_be-targe.patch \
+           file://0002-aarch64-fix-wrong-big_endian-flag-in-aarch64_be-case.patch \
 "
 SRC_URI_append_libc-musl = "\
            file://0001-x86-Stub-out-x86_local_resume.patch \
-- 
1.9.1