robin.thoni/ipxe - git rthoni.com

Michael Brown 9e8c48deea [test] Check for correct -mrtd assumption on libgcc arithmetic functions As observed in commit 082cedb ("[build] Fix __libgcc attribute for recent gcc versions"), recent versions of gcc have changed the semantics of -mrtd as applied to the implicit arithmetic functions. It is possible for tests to succeed even if our assumptions about gcc's interpretation of -mrtd are incorrect. In particular, if gcc chooses to utilise a frame pointer in the calling function, then it can tolerate a temporarily incorrect stack pointer (since the stack pointer will shortly afterwards be restored from the frame pointer anyway). Add tests designed specifically to check that our implementations of the implicit arithmetic functions manipulate the stack pointer as expected by gcc. The effect of these tests can be observed by temporarily reverting commit 082cedb ("[build] Fix __libgcc attribute for recent gcc versions"): without this fix in place, the tests will fail on gcc 4.7 and later. Signed-off-by: Michael Brown <mcb30@ipxe.org>		10 gadus atpakaļ
contrib	[errdb] Strip platform error code for non-platform-generated errors	11 gadus atpakaļ
src	[test] Check for correct -mrtd assumption on libgcc arithmetic functions	10 gadus atpakaļ
COPYING	Initial revision	19 gadus atpakaļ
COPYRIGHTS	[build] Rename gPXE to iPXE	14 gadus atpakaļ
README	[doc] Re-add README file	14 gadus atpakaļ

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org