Hi TigerLiu@viatech.com.cn,
On Fri, 5 Jul 2013 18:31:50 +0800, TigerLiu@viatech.com.cn wrote:
Hi, experts:
Would any expert fix this question?
It seems related MOVW instruction's usuage when turning off gcc optimazition.
If i just turned on "-O1" or "-O2", still failed to compile uboot code.
I have seen the issue arise, and looked it up with the help of Jeroen Hofstee (Cc:). It is somehow related to the fact that on ARM, U-Boot (especially the DM) relies on ARM ELF relocation records all being of the R_ARM_RELATIVE type, while for -O{0,1,2} the compiler generates (some) MOVW-related relocation record types.
I have local branches related to this. I need to go through them and will post them but not for 2013.07 as these are not fixes, and there is no bug per se since U-Boot is supposed to build with -Os, not -O{0,1,2}.
Best wishes,
Amicalement,