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Re: [Qemu-devel] SPARC user mode multithread

From: Blue Swirl
Subject: Re: [Qemu-devel] SPARC user mode multithread
Date: Fri, 6 Nov 2009 20:31:23 +0200

On Thu, Nov 5, 2009 at 10:29 PM, David Munday <address@hidden> wrote:
> Hi,
> I found the Linux/Sparc clone operations in copy_thread() from process32.c 
> (attached)

Forgot to attach?

> I tried modifying cpu_clone_regs with the following code per the Sparc/linux 
> routines, but qemu still stalls on signal suspend.
> It seems like it should only need to set the stack pointer and the return 
> addresses for the child and parent processes, but it's clearly missing 
> something.
> Is there more to this fix than these two assignments?
> static inline void cpu_clone_regs(CPUState *PARENT_env, CPUState *child_env, 
> target_ulong newsp)
> {
>    if (newsp)
>    {
>     child_env->regwptr[14] = newsp; //changed to 14 per process32.c DM
>         //env->regwptr[22] = newsp;

But 14 would be l6, not i6.

>     printf("setting stack pointer\n");
>    }
>    child_env->regwptr[0] = 0;

This should be the pid.

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