From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Thu, 22 Dec 2011 16:55:38 +0100 Subject: [U-Boot] [PATCH] PPC: fix "Warning: FOO uses hard float, BAR uses soft float". In-Reply-To: <1324564181-8949-1-git-send-email-wd@denx.de> References: <20111209231244.770901925DE0@gemini.denx.de> <1324564181-8949-1-git-send-email-wd@denx.de> Message-ID: <201112221655.39187.sr@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Wolfgang, On Thursday 22 December 2011 15:29:41 Wolfgang Denk wrote: > It appears that with recent versions of GCC the explicit > "-mhard-float" command line option takes precedence over the > ``asm(".gnu_attribute 4, 2");'' in the source file, so this no longer > helps to avoid the warnings we get when linking code that uses FP > instructions with other code that was built using soft-float. > > We can remove the ".gnu_attribute" (which appears to carry no other > information, at least so far) from the object files, but we also have > to make sure we don't pull in the __gcc_qsub() and __gcc_qmul() > functions from the standard libgcc, as these would again "infect" our > linking. We copy this code from: > gcc-4.2.2/gcc/config/rs6000/darwin-ldouble.c > This old version was chosen because it was still available under a > compatible license (GCC v2+). The file was stripped down to the > needed parts, and reformatted so it passes checkpatch with only one > warning (do not add new typedefs). > > Signed-off-by: Wolfgang Denk > Cc: Kumar Gala > Cc: Stefan Roese > Cc: Andy Fleming > Cc: Kim Phillips Tested successfully on sequoia, so: Tested-by: Stefan Roese Best regards, Stefan -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de