[Qemu-devel] [PATCH] Sparc64 user emulator support

[Qemu-devel] [PATCH] Sparc64 user emulator support

[Blue Swirl]

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I got a statically linked trivial program (hello, world) execute on a x86 
host. More complex programs expose bugs in the Sparc64 emulation, even the 
dynamic linker uses currently unimplemented VIS instructions.

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[Qemu-devel] Re: [PATCH] Sparc64 user emulator support

[Paul Brook]

On Tuesday 11 July 2006 20:46, Blue Swirl wrote:
> I got a statically linked trivial program (hello, world) execute on a x86
> host. More complex programs expose bugs in the Sparc64 emulation, even the
> dynamic linker uses currently unimplemented VIS instructions.

I'm fairly surprised user emulation works at all for 64-bit targets. I'm 
fairly sure that code isn't even remotely 64-bit safe.

Paul

[Qemu-devel] Re: [PATCH] Sparc64 user emulator support

[Blue Swirl]

>I'm fairly surprised user emulation works at all for 64-bit targets. I'm
>fairly sure that code isn't even remotely 64-bit safe.

On a 32-bit host, a write() from 64-bit program succeeds because the data 
happens to lie below 4G. I don't know if this can be guaranteed in every 
case, but then system calls like exit() don't need any pointers.

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