On 06/10/2013 01:48 PM, Anton Blanchard wrote:
>
> PTRACE_GETREGS was added to the ppc kernel in 2.6.23. In order to
> provide backward compatibility for very old kernels, add a manual
> fallback.
> # elif defined(POWERPC)
> get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &ppc_regs);
> + if (get_regs_error)
> + get_regs_error = powerpc_getregs_old(pid);
Just to be sure that we only fall back if PTRACE_GETREGS op is unknown,
not in other cases (such as tracee killed under us) lets do this:
if (get_regs_error && errno == ????)
Which errno is generated in this case?
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