On Mon, Jun 27, 2011 at 8:37 AM, Philip Loh <
address@hidden> wrote:
> I'm new to QEMU development and am attempting to write code for a new board
> and system. I modeled the code after the code in the target-microblaze
> folder, but removed the dependency on the petalogix board and instead made
> it require the code from my board. At this point, it can boot and execute a
> binary file with no issues until it attempts to do a save word / load word.
> The dump for the binary is as follows:
> 0: 20200040 addi r1, r0, 64
> 4: 20400030 addi r2, r0, 48
> 8: 20600020 addi r3, r0, 32
> c: d8411000 sw r2, r1, r2
> 10: d8611800 sw r3, r1, r3
> 14: c8811000 lw r4, r1, r2
> 18: c8a11000 lw r5, r1, r3
>
> One would expect the sw and lw components (highlighted in yellow) to save r2
> to *(r1+r2) and then load it back to r4, and save r3 to *(r1+r3) and then
> load it back to r5. However, r4 and r5 are both 0 at the end. I don't know
> how to verify what is at *(r1+r2) or *(r1+r3) because when I attempt to "x
> address" in a remote desktop viewer, all I see are zeroes beyond x 18. Would
> anyone know what went wrong? Much thanks!