> Hmm... This is very strange, because Dhrystone is exactly the > benchmark this was tested on. How did you determine that the SPE > functions are called?
I prefix the strcpy and strcmp functions with a "v" in dhry21a.c and dhry21b.c. Then I statically compile the c files with the freescale assembly source S files and not with the library libcfsl_e500.a. If I don't add the S files the ld fails else it succeeds. I retreive the symbols vstr... in the binary dhrystone with readelf. So I presume that it is the right code that is called. > I'm not sure why you aren't seeing a performance gain, but I assure > you that, if SPE instructions weren't working, Dhrystone would > crash. I confirm that if I try to run this binary without SPE in Linux kernel I get an exception. > The only other possibility I can think of is that the SPE > versions of the functions aren't being called. I don't understand what you say. Perhaps have you a pre-compiled dhrystone for Linux 2.6 I can try and compare on my board Thanks G?rard
