On Thu, Jan 30, 2014 at 01:12:47PM +0000, Leif Lindholm wrote: > Oh, that's neat - thanks! > > Well, given that, I can think of two less horrible options: > 1) > .macro update_sctlr, tmp:req, set=, clear= > mrc p15, 0, \tmp, c1, c0, 0 > .ifnc \set, > orr \tmp, \set > .endif > .ifnc \clear, > mvn \clear, \clear > and \tmp, \tmp, \clear
Can't you use bic here? > .endif > mcr p15, 0, \tmp, c1, c0, 0 > .endm > > With the two call sites in uefi_phys.S as: > > ldr r5, =(CR_M) > update_sctlr r12, , r5 > and > ldr r4, =(CR_I | CR_C | CR_M) > update_sctlr r12, r4 These ldr= could be movs, right? If so, I definitely prefer this to putting an ldr = into the macro itself (option 2). Cheers, Will -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
