add gnu stack markings to assembler

[sfabbro]

Following our Gentoo documentation on:

http://www.gentoo.org/proj/en/hardened/gnu-stack.xml

I propose adding the following GNU stack markings. This is necessary to pass our QA tests.

[xianyi]

Hi @sfabbro ,

I have added GNU stack markings. Could you test develop branch?

Thank you

Xianyi

[puranoid]

Compatibility issues of GNU stack markings with PathScale EKOPath(tm) Compiler Suite: Version 4.0.12.1 (GNU gcc compatible version 4.2.1), machine Linux 3.2.0-53-generic Ubuntu SMP Thu Aug 22 21:01:03 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux.

EPILOGUE definition in common files should be changed FROM

#define EPILOGUE
.size REALNAME, .-REALNAME;
.section .note.GNU-stack,"",%progbits
#endif

TO

#define EPILOGUE
.size REALNAME, .-REALNAME;
.section .note.GNU-stack,"",@progbits
#endif

Thanks,

PR.

[xianyi]

Hi PR,

Thank you for the patch. I fixed this issue on develop branch.

Xianyi