[gnome-continuous-yocto/gnomeostree-3.28-rocko: 3700/8267] glibc: Enable backtrace from abort on ARM

[Emmanuele Bassi <ebassi src gnome org>]

commit f4607a1d6b78e5a6781651021dc5899029b46267
Author: Yuanjie Huang <yuanjie huang windriver com>
Date:   Fri Dec 9 11:49:34 2016 -0600

    glibc: Enable backtrace from abort on ARM
    
    ARM stack frames for abort and raise were limited to the the actual
    abort and raise call, such as:
    
    Obtained 4 stack frames.
    ./test-app(print_trace+0x1c) [0x10a08]
    ./test-app() [0x10b3c]
    /lib/libc.so.6(__default_sa_restorer+0) [0x4adae1e0]
    /lib/libc.so.6(gsignal+0xa0) [0x4adacf74]
    
    This is not terribly useful when trying to figure out what function
    may have called called the abort, especially when using pthreads.
    
    After the change the trace would now look like:
    
    Obtained 8 stack frames.
    ./test-app(print_trace+0x1c) [0x10a08]
    ./test-app() [0x10b3c]
    /lib/libc.so.6(__default_sa_restorer+0) [0x4befe1e0]
    /lib/libc.so.6(gsignal+0xa0) [0x4befcf74]
    /lib/libc.so.6(abort+0x134) [0x4befe358]
    ./test-app(dummy_function+0x50) [0x10adc]
    ./test-app(main+0xd4) [0x10c24]
    /lib/libc.so.6(__libc_start_main+0x114) [0x4bee7a58]
    
    (From OE-Core rev: 93bf8713d8e13c278543baea94fb8dad0cb80e49)
    
    Signed-off-by: Yuanjie Huang <yuanjie huang windriver com>
    Signed-off-by: Mark Hatle <mark hatle windriver com>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/recipes-core/glibc/glibc.inc |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/meta/recipes-core/glibc/glibc.inc b/meta/recipes-core/glibc/glibc.inc
index e85c704..7bae0e9 100644
--- a/meta/recipes-core/glibc/glibc.inc
+++ b/meta/recipes-core/glibc/glibc.inc
@@ -78,3 +78,9 @@ do_configure_prepend() {
 }
 
 GLIBC_ADDONS ?= "nptl,libidn"
+
+# Enable backtrace from abort()
+do_configure_append_arm () {
+       echo "CFLAGS-abort.c = -fasynchronous-unwind-tables" >> ${B}/configparms
+       echo "CFLAGS-raise.c = -fasynchronous-unwind-tables" >> ${B}/configparms
+}