On Fri, Aug 07, 2009 at 11:36:56AM +0200, Alain Knaff wrote : > On 08/07/09 11:24, Albin Tonnerre wrote: > > On Thu, Aug 06, 2009 at 11:40:55PM +0100, Russell King - ARM Linux wrote : > >> On Mon, Aug 03, 2009 at 04:58:19PM +0200, Albin Tonnerre wrote: > >>> This is the second part of patch. This part includes: > >>> - changes to ach/arch/boot/Makefile to make it easier to add new > >>> compression types > >>> - new piggy.lzo.S necessary for lzo compression > >>> - changes in arch/arm/boot/compressed/misc.c to allow the use of lzo or > >>> gzip, depending on the config > >>> - Kconfig support > >> FYI, with these patches applied and selecting GZIP method, I get > >> linker errors. I've been unable to track down what's going on, but > >> it appears to be a libgcc issue. > >> In spite of the decompressor being built as an EABI object, gcc seems > >> to be issuing calls to __umodsi3, which isn't in the EABI libgcc > >> (they're called something different - don't ask.) > > I also happen to have issues related to the linker not finding __aeabi_uidivmod, > > but only when compiling with CONFIG_CC_OPTIMIZE_FOR_SIZE. Is it similar for you, > > or does it also fail when compiling with -O2 ? > >> So I think these patches need further testing and evaluation on ARM > >> before they can be merged. Moreover, I'd like to see some comparisons > >> between the _current_ gzip method, the new gzip method and the lzo > >> method on ARM. > > I don't have my ARM platforms at hand, but I'll so these comparisons in a couple > > days when I access to them again. > > Regards, > Could it be that the patches that remove division (zutil.h and inflate.c) > have somehow not been applied? Indeed, they've not been applied. However, I'd rather try to understand why exactly this is an issue when compiling with -Os and not -O2 instead of working around it by removing the divisions. Regards, -- Albin Tonnerre, Free Electrons Kernel, drivers and embedded Linux development, consulting, training and support. http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
