libunwind: Upgrade to 1.2rc1+

This helps in compiling with gcc6
drop patches backported to 1.1
remove musl conditional patches, they should work
on glibc too now

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

4 files changed, 242 insertions, 0 deletions

diff --git a/meta/recipes-support/libunwind/libunwind/0001-Fix-build-on-mips-musl.patch b/meta/recipes-support/libunwind/libunwind/0001-Fix-build-on-mips-musl.patch
new file mode 100644
index 0000000000..8bcc252bad
--- /dev/null
+++ b/meta/recipes-support/libunwind/libunwind/0001-Fix-build-on-mips-musl.patch
@@ -0,0 +1,81 @@
+From e623c7703945a5eb6c9a30586ec5e23b2f7396f6 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 23 Mar 2016 06:08:59 +0000
+Subject: [PATCH] Fix build on mips/musl
+
+Do not include endian.h on musl it includes
+further headers which can not be compiled in __ASSEMBLER__
+ mode
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Pending
+
+ src/coredump/_UCD_internal.h | 34 ++++++++++++++++++++++++++++++++++
+ src/mips/getcontext.S        |  3 +--
+ 2 files changed, 35 insertions(+), 2 deletions(-)
+
+Index: git/src/coredump/_UCD_internal.h
+===================================================================
+--- git.orig/src/coredump/_UCD_internal.h
++++ git/src/coredump/_UCD_internal.h
+@@ -44,6 +44,41 @@ WITH THE SOFTWARE OR THE USE OR OTHER DE
+ 
+ #include "libunwind_i.h"
+ 
++#ifndef __GLIBC__
++#include <sys/reg.h>
++
++#define EF_REG0			6
++#define EF_REG1			7
++#define EF_REG2			8
++#define EF_REG3			9
++#define EF_REG4			10
++#define EF_REG5			11
++#define EF_REG6			12
++#define EF_REG7			13
++#define EF_REG8			14
++#define EF_REG9			15
++#define EF_REG10		16
++#define EF_REG11		17
++#define EF_REG12		18
++#define EF_REG13		19
++#define EF_REG14		20
++#define EF_REG15		21
++#define EF_REG16		22
++#define EF_REG17		23
++#define EF_REG18		24
++#define EF_REG19		25
++#define EF_REG20		26
++#define EF_REG21		27
++#define EF_REG22		28
++#define EF_REG23		29
++#define EF_REG24		30
++#define EF_REG25		31
++#define EF_REG28		34
++#define EF_REG29		35
++#define EF_REG30		36
++#define EF_REG31		37
++#endif
++
+ 
+ #if SIZEOF_OFF_T == 4
+ typedef uint32_t uoff_t;
+Index: git/src/mips/getcontext.S
+===================================================================
+--- git.orig/src/mips/getcontext.S
++++ git/src/mips/getcontext.S
+@@ -24,12 +24,11 @@ OF CONTRACT, TORT OR OTHERWISE, ARISING
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+ 
+ #include "offsets.h"
+-#include <endian.h>
+ 
+ 	.text
+ 
+ #if _MIPS_SIM == _ABIO32
+-# if __BYTE_ORDER == __BIG_ENDIAN
++# if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+ #  define OFFSET 4
+ # else
+ #  define OFFSET 0
diff --git a/meta/recipes-support/libunwind/libunwind/0001-backtrace-Use-only-with-glibc-and-uclibc.patch b/meta/recipes-support/libunwind/libunwind/0001-backtrace-Use-only-with-glibc-and-uclibc.patch
new file mode 100644
index 0000000000..9aed419a12
--- /dev/null
+++ b/meta/recipes-support/libunwind/libunwind/0001-backtrace-Use-only-with-glibc-and-uclibc.patch
@@ -0,0 +1,45 @@
+From 04437142399662b576bd55a85485c6dcc14d0812 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 31 Dec 2015 06:44:07 +0000
+Subject: [PATCH] backtrace: Use only with glibc and uclibc
+
+backtrace API is glibc specific not linux specific
+so make it behave so.
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Pending
+
+ tests/test-coredump-unwind.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/tests/test-coredump-unwind.c b/tests/test-coredump-unwind.c
+index 5254708..8767b42 100644
+--- a/tests/test-coredump-unwind.c
++++ b/tests/test-coredump-unwind.c
+@@ -57,7 +57,9 @@
+ #include <grp.h>
+ 
+ /* For SIGSEGV handler code */
++#ifdef __GLIBC__
+ #include <execinfo.h>
++#endif
+ #include <sys/ucontext.h>
+ 
+ #include <libunwind-coredump.h>
+@@ -238,11 +240,11 @@ void handle_sigsegv(int sig, siginfo_t *info, void *ucontext)
+ 			ip);
+ 
+   {
++#ifdef __GLIBC__
+     /* glibc extension */
+     void *array[50];
+     int size;
+     size = backtrace(array, 50);
+-#ifdef __linux__
+     backtrace_symbols_fd(array, size, 2);
+ #endif
+   }
+-- 
+2.6.4
+
diff --git a/meta/recipes-support/libunwind/libunwind/0001-x86-Stub-out-x86_local_resume.patch b/meta/recipes-support/libunwind/libunwind/0001-x86-Stub-out-x86_local_resume.patch
new file mode 100644
index 0000000000..371013aaaa
--- /dev/null
+++ b/meta/recipes-support/libunwind/libunwind/0001-x86-Stub-out-x86_local_resume.patch
@@ -0,0 +1,54 @@
+From f5df01655a4b76d4fe415747de581d94ac593e6a Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 22 Mar 2016 16:19:29 +0000
+Subject: [PATCH] x86: Stub out x86_local_resume()
+
+its purpose seems
+to be unwinding across signal handler boundaries, which cannot happen
+in correct programs anyway. Replacing the whole function with
+something like *(volatile char *)0=0; (i.e. crash), gets a working
+libunwind
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Pending
+
+ src/x86/Gos-linux.c | 22 +---------------------
+ 1 file changed, 1 insertion(+), 21 deletions(-)
+
+diff --git a/src/x86/Gos-linux.c b/src/x86/Gos-linux.c
+index 31f83ba..3aaa34e 100644
+--- a/src/x86/Gos-linux.c
++++ b/src/x86/Gos-linux.c
+@@ -281,27 +281,7 @@ x86_r_uc_addr (ucontext_t *uc, int reg)
+ HIDDEN int
+ x86_local_resume (unw_addr_space_t as, unw_cursor_t *cursor, void *arg)
+ {
+-  struct cursor *c = (struct cursor *) cursor;
+-  ucontext_t *uc = c->uc;
+-
+-  /* Ensure c->pi is up-to-date.  On x86, it's relatively common to be
+-     missing DWARF unwind info.  We don't want to fail in that case,
+-     because the frame-chain still would let us do a backtrace at
+-     least.  */
+-  dwarf_make_proc_info (&c->dwarf);
+-
+-  if (unlikely (c->sigcontext_format != X86_SCF_NONE))
+-    {
+-      struct sigcontext *sc = (struct sigcontext *) c->sigcontext_addr;
+-
+-      Debug (8, "resuming at ip=%x via sigreturn(%p)\n", c->dwarf.ip, sc);
+-      sigreturn (sc);
+-    }
+-  else
+-    {
+-      Debug (8, "resuming at ip=%x via setcontext()\n", c->dwarf.ip);
+-      setcontext (uc);
+-    }
++  *(volatile char *)0=0;
+   return -UNW_EINVAL;
+ }
+ #endif
+-- 
+1.8.3.1
+
diff --git a/meta/recipes-support/libunwind/libunwind/Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch b/meta/recipes-support/libunwind/libunwind/Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch
new file mode 100644
index 0000000000..0dff2c86dc
--- /dev/null
+++ b/meta/recipes-support/libunwind/libunwind/Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch
@@ -0,0 +1,62 @@
+From 24484e80b3e329c9edee1995e102f8612eedb79c Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Date: Tue, 13 May 2014 23:32:27 +0200
+Subject: [PATCH] Add AO_REQUIRE_CAS to fix build on ARM < v6
+
+ARM earlier than ARMv6, such as ARMv4 and ARMv5 do not provide
+optimize atomic operations in libatomic_ops. Since libunwind is using
+such operations, it should define AO_REQUIRE_CAS before including
+<atomic_ops.h> so that libatomic_ops knows it should use emulated
+atomic operations instead (even though they are obviously a lot more
+expensive).
+
+Also, while real atomic operations are all inline functions and
+therefore linking against libatomic_ops was not required, the emulated
+atomic operations actually require linking against libatomic_ops, so
+the commented AC_CHECK_LIB test in acinclude.m4 is uncommented to make
+sure we link against libatomic_ops.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
+
+Upstream-Status: Pending
+Taken from:
+https://raw.githubusercontent.com/rdnetto/teapot-buildroot/master/package/libunwind/libunwind-02-Add-AO_REQUIRE_CAS-to-fix-build-on-ARM-v6.patch
+
+---
+ acinclude.m4          | 8 +-------
+ include/libunwind_i.h | 1 +
+ 2 files changed, 2 insertions(+), 7 deletions(-)
+
+diff --git a/acinclude.m4 b/acinclude.m4
+index 497f7c2..9c15af1 100644
+--- a/acinclude.m4
++++ b/acinclude.m4
+@@ -22,11 +22,5 @@ fi])
+ AC_DEFUN([CHECK_ATOMIC_OPS],
+ [dnl Check whether the system has the atomic_ops package installed.
+   AC_CHECK_HEADERS(atomic_ops.h)
+-#
+-# Don't link against libatomic_ops for now.  We don't want libunwind
+-# to depend on libatomic_ops.so.  Fortunately, none of the platforms
+-# we care about so far need libatomic_ops.a (everything is done via
+-# inline macros).
+-#
+-#  AC_CHECK_LIB(atomic_ops, main)
++  AC_CHECK_LIB(atomic_ops, main)
+ ])
+diff --git a/include/libunwind_i.h b/include/libunwind_i.h
+index 23f615e..deabdfd 100644
+--- a/include/libunwind_i.h
++++ b/include/libunwind_i.h
+@@ -95,6 +95,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+ 	(pthread_mutex_unlock != NULL ? pthread_mutex_unlock (l) : 0)
+ 
+ #ifdef HAVE_ATOMIC_OPS_H
++# define AO_REQUIRE_CAS
+ # include <atomic_ops.h>
+ static inline int
+ cmpxchg_ptr (void *addr, void *old, void *new)
+-- 
+1.9.2
+