Hello Vincent, * Vincent Stone <shihang7422...@gmail.com> [2016-02-29 10:36:29 +0800]: > Why does Genode disable this assembly code option? ( I can only find a > 1-sentence explaination on Genode release notes 12.08 > <http://genode.org/documentation/release-notes/12.08> > > Because libcrypto provides certain optimized assembler functions, which > > unfortunately are not expressed with position-independent code, we removed > > this assembler code and build libcrypto with -DOPENSSL_NO_ASM
Only specific assembler implementations for x86 were enabled when we did the initial libcrypto port. When the port was updated to a newer version the generated asm files did contain text relocations, which did not work when compiling with -fpic, IIRC. Since potential performance gains from using the asm implementation were not important I decided to remove the files and to use the generic C implementation instead. We never tested or used the asm implementations on other platforms, e.g. ARM. > I guess the loader of Genode can not handle load-time relocation for shared > library so all shared library must be position independent. Am I right? The dynamic loader does support load-time relocations for data but code relocations, e.g. function calls, are not supported [1]. [1] see repos/base/src/lib/ldso/spec/*/relocation.h Regards, Josef ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ genode-main mailing list genode-main@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main
