Resolved: I accidentally compiled an executable that had a different memory map than the board's memory map.
Thanks though! On 27 June 2011 16:17, Stefan Hajnoczi <stefa...@gmail.com> wrote: > On Mon, Jun 27, 2011 at 8:37 AM, Philip Loh <philip....@aeste.net> 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! > > If you are able to post a link to a git repo that might help. Seeing > how you set up the board and added RAM would be important. > > Stefan > -- Philip Z Loh, Intern at Aeste Works (M), Candidate for Bachelor of Science in Engineering: Computing.
