On Tue, Jul 05, 2016 at 02:00:35AM +0000, co...@sdf.org wrote: > After failing to fix enough broken things with the interrupt code by > reading it, I wanted to try adding some code to let me know when the > interrupt level was changed. > > I've attempted to add a couple of PRINTFs from <machine/asm.h>, but it > mostly fails to boot with the addition of this code.
Where have you put it? (Early in kernel startup, for example, there are many things you can't do yet.) > gxemul gives these warnings: > [ warning: LOW reference: vaddr=0x00000000, exception TLBL, pc=0x00000000 > <(no symbol)> ] > [ warning: LOW reference: vaddr=0x00000000, 000000 <(no symbol)> ] > [ warning: LOW reference: vaddr=0x00000000, exception TLBL, pc=0x00000000 > <(no symbol)> ] > [ warning: LOW reference: vaddr=0x00000000, exception TLBL, pc=0x00000000 > <(no symbol)> ] > > I'm guessing it jumped somewhere it shouldn't have. Yeah, jumped to null. I suspect if you patch gxemul to also print the value of $ra (register 31) it will be somewhat more enlightening. -- David A. Holland dholl...@netbsd.org
