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Re: [Qemu-devel] qemu regression 0.7.2 -> 0.8.0 (ARM user emulation)


From: Paul Brook
Subject: Re: [Qemu-devel] qemu regression 0.7.2 -> 0.8.0 (ARM user emulation)
Date: Sat, 11 Mar 2006 21:02:58 +0000
User-agent: KMail/1.9.1

On Monday 06 March 2006 14:03, Ulrich Hecht wrote:
> Hi!
>
> On Wednesday 01 March 2006 23:18, Anderson Lizardo wrote:
> > I was having some issues with the latest qemu (ARM user emulation),
> > which I tracked down to the following reduced test case:
> >
> > #include <stdio.h>
> > int main(void)
> > {
> >         float a, b;
> >         a = 0.1f;
> >         b = 0.8f;
> >         printf("a < b: %d\n", (a < b));
> >         return 0;
> > }
>
> This fails because of a bug in the glue code between NWFPE and QEMU. (It
> relies on a specific layout of the CPUARMState structure.)
>...
> +        cpsr_write(user_registers,x,~CPSR_M);

This should be CPSR_NZCV. Applied with that change.

Paul





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