Re: [Qemu-ppc] pseudo-op for ".long"

[Brandon Williams]

Thanks for your reply.  Here is the command that I'm using:

sudo qemu-system-ppc -m 1024 -cpu G2leGP3 -bios ~/Bstrap.bin

So this is ppc softmmu.  The specific binary that I'm trying to run is a Flight Management System trainer that would normally run on this:
http://www.universalavionics.com/products/uns1fw.aspx

but I'm obviously trying to emulate it with Qemu.  I load a Bstrap.bin into 0xFFF00000 and the FMS.bin into 0x0100000.  It seems to get through the Bstrap fine but it crashes on that invalid opcode with .long instruction on the first line of the FMS.bin at 0x0100000.

I've opened the FMS.bin in IDA to look around.  It looks like the .long instruction appears in there, too.  Is it possible that IDA doesn't know how to translate that instruction as well?

On Fri, Jun 27, 2014 at 4:35 PM, Alexander Graf <address@hidden> wrote:

Hi Brandon,

On 27.06.14 21:11, Brandon Williams wrote:

Is there currently support for the psuedo-op ".long"? I'm trying to run a bin that attempts this op and Qemu crashes because of an invalid/unsupported opcode.

".long" in disassembly usually just denotes an instruction that couldn't be translated, so it gives you the raw opcode number.

What exactly are you trying to do? My first guess would be that you're trying to run a binary for a specific PPC platform, such as e500v2 with SPE support.

What platform would your binary run on usually? Which target are we talking about? Linux-user or softmmu (system emulation)?


Alex