Re: [PATCH] x86-64 singlestep through sigreturn system call

[Andi Kleen]

On Mon, 12 Jul 2004 17:22:30 -0700
Roland McGrath <roland@xxxxxxxxxx> wrote:


> This patch fixes the problem by forcing a fake single-step trap at the end
> of rt_sigreturn when PTRACE_SINGLESTEP was used to enter the system call.

I don't like this very much, see previous mail.

If you really wanted to do it:

Wouldn't it be simpler to just copy the TF bit from the previous Eflags? 
This special case looks quite ugly.

-Andi
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