(This patch isn’t going upstream, since I expect QEMU is still working on Power9 compliance and would probably make their own proper solution) What I learned With the patch, the kernel debugger works fine. I created a kludge to allow QEMU to ignore the extra third argument.
Snes emulator mac 10.7.2 manual#
Yeah, I don’t know what that means either: you can read “4.10.7.2 SLB Management Instructions” in the POWER9 User’s Manual for a better explanation. POWER9 processors added an extra argument to slbmfev and slbmfee to allow these Segment Lookaside Buffer instructions to operate in the presence of a Radix page table (similar to an x86 page table) instead of the traditional PowerPC-styled page table.
This GNU binutils patch showed me what happened. Could this be an instruction set extension? Secondly, AIX’s own disassembler considers these instructions valid.
kdb_state_save_sslb_vsx_tm+000130 slbmfee r18,r16,1įirst of all, this shows that both slbmfev and slbmfee are affected by the Invalid Bits error.
Snes emulator mac 10.7.2 how to#
From these, I found out how to add a blank node from the Open Firmware bootloader. I searched “set property Open Firmware” on the Internet, and found some tutorials, like this one, this one, and this one. The diagnostic CD checks for 101 or 103, so to return 103, all we need is to add the ibm,aix-diagnostics node to QEMU’s device tree. if the root node has the ibm,aix-diagnostics node, return 103.if the root node has the ibm,aix-diagnostics node, return 101.If the ibm,model-class property on the root node is “C5”, “D5”, or “E5”.The is_eserver method can return 4 values, depending on the device tree’s root node: The program checks for options with getopt, and handles -M using a method named is_eserver. Thankfully, the CD includes a copy of bootinfo_chrp in usr/lib/boot/bin, and it included symbols thus, it was simple to reverse engineer the logic. So bootinfo_chrp -M must return 101 or 103. # Check to see if the system has diagnostics support In fact, AIX even detects if it’s being run in QEMU: Importantly for me, QEMU 3.0.0 can emulate AIX without any modifications or workarounds, allowing me to try an Enterprise operating system without access to expensive hardware. IBM’s AIX is one of the few still being updated today. In the 1990s, every workstation or server manufacturer had their own version of Unix. IBM AIX is a proprietary Unix variant developed by IBM for their Power Systems line of POWER9 servers. That’s cool! I didn’t know there’s a production deployment of AIX on QEMU.
Snes emulator mac 10.7.2 install#
Since writing this article, I’ve also found Liang Guo’s tutorial on setting up AIX, so if you have an AIX setup disc instead of the Live CD, you can install a proper AIX virtual machine.Īlso, Nutanix’s AIX VMs are hosted with QEMU. Step 8: once you’re done, close the QEMU window.Īlternatively, press Ctrl-A, then C to drop into the QEMU monitor, then type q to quit. (If you’re using the Diagnostics tool, you’ll be stuck on the step where it asks you to choose a terminal. The Diagnostics CD doesn’t have many tools, but you can try uname -a, mount, or lscfg. Exec(/usr/lpp/diagnostics/bin/Dctrl,/usr/lpp/diagnostics/bin/Dctrl)Īt this point, you can try some Unix commands.
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