Re: CVS commit: src/common/lib/libc/arch/arm/string
On Jan 15, 2013, at 12:10 AM, David Laight wrote: On Tue, Jan 15, 2013 at 02:03:31AM +, Matt Thomas wrote: Module Name: src Committed By:matt Date:Tue Jan 15 02:03:31 UTC 2013 Added Files: src/common/lib/libc/arch/arm/string: strchr_naive.S strrchr_naive.S Log Message: Add simple/small versions of strchr/strrchr for ARM. If you use 'preindex with writeback' you can remove an instruction from the loop (in strchr at least). I pretty much already do that. I'm also intrigued that these are the very simple/small versions whereas the memcpy() (I think) was one that did all the alignment and double-word copies! As I said in its commit, the stupid version was very very slow.
Re: CVS commit: src/common/lib/libc/arch/arm/string
On Tue, Jan 15, 2013 at 02:03:31AM +, Matt Thomas wrote: Module Name: src Committed By: matt Date: Tue Jan 15 02:03:31 UTC 2013 Added Files: src/common/lib/libc/arch/arm/string: strchr_naive.S strrchr_naive.S Log Message: Add simple/small versions of strchr/strrchr for ARM. If you use 'preindex with writeback' you can remove an instruction from the loop (in strchr at least). I'm also intrigued that these are the very simple/small versions whereas the memcpy() (I think) was one that did all the alignment and double-word copies! David -- David Laight: da...@l8s.co.uk
