On Mon, Aug 22, 2011 at 10:42:39AM -0300, Christian Robottom Reis wrote:
On Sun, Aug 21, 2011 at 09:54:56PM -0400, Nicolas Pitre wrote:
AS arch/arm/boot/compressed/head.o arch/arm/boot/compressed/head.S: Assembler messages: arch/arm/boot/compressed/head.S:127: Error: selected processor does not support requested special purpose register -- `mrs r2,cpsr' arch/arm/boot/compressed/head.S:134: Error: selected processor does not support requested special purpose register -- `mrs r2,cpsr' arch/arm/boot/compressed/head.S:136: Error: selected processor does not support requested special purpose register -- `msr cpsr_c,r2' make[2]: *** [arch/arm/boot/compressed/head.o] Error 1 make[1]: *** [arch/arm/boot/compressed/vmlinux] Error 2 make: *** [uImage] Error 2
[...]
Looks to me like your assembler is broken, or gcc is not properly telling it about the actual architecture in use.
Right. And the original unwind-related missing symbols is a problem somewhere in configuration land?
We should turn on CONFIG_ARM_UNWIND in all the global configs if it's not already on.
Thumb-2 requires it in practice, but it does no harm for ARM either -- in principle it may reduce run-time stack usage in the kernel by a small amount (but don't quote me on that)
Cheers ---Dave