On Tue, 2013-09-10 at 16:12 +0800, feng...@phytium.com.cn wrote: > +/* > + * Enter Exception. > + * This will save the processor state that is X0~X29/LR/SP/ELR/PSTATE > + * to the stack frame. > + */ > +#define EXCEPTION_ENTRY \
asm macros are nicer. > + sub sp, sp, S_FRAME_SIZE - S_LR ;\ > + push x28, x29 ;\ > + push x26, x27 ;\ > + push x24, x25 ;\ > + push x22, x23 ;\ > + push x20, x21 ;\ > + push x18, x19 ;\ > + push x16, x17 ;\ > + push x14, x15 ;\ > + push x12, x13 ;\ > + push x10, x11 ;\ > + push x8, x9 ;\ > + push x6, x7 ;\ > + push x4, x5 ;\ > + push x2, x3 ;\ > + push x0, x1 ;\ > + add x21, sp, S_FRAME_SIZE ;\ You just happened to pick x21 for this on your rewrite? > + ;\ > + /* Could be running at EL1 or EL2 */ ;\ > + mrs x0, CurrentEL ;\ > + cmp x0, 0x4 ;\ > + b.eq 1f ;\ > + cmp x0, 0x8 ;\ > + b.eq 2f ;\ > + b 3f ;\ > +1: mrs x22, elr_el1 ;\ > + mrs x23, spsr_el1 ;\ Likewise x22 and x23. Taking Linux code and altering details is not the same thing as writing from scratch and does not free the code from GPLv2-only or the need to attribute. Given how many times we've gone back and forth on this sort of thing, I'm rather nervous about the legal status of this patchset in general. What other copying is there that I haven't noticed? -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
