[PATCH] Add support for Altera's Nios-II softcore architecture

Mike Frysinger vapier at gentoo.org
Tue Jan 28 00:42:48 UTC 2014

On Monday, January 27, 2014 20:58:11 Ezequiel García wrote:
> On 27 January 2014 17:54, Mike Frysinger wrote:
> > On Sunday, January 26, 2014 21:59:07 Ezequiel Garcia wrote:
> >> --- a/system.c
> >> +++ b/system.c
> >> 
> >> +int sys_getpagesize(struct tcb *tcp)
> >> +{
> >> +     return 0;
> >> +}
> > 
> > that can't possibly be correct ?
> Hm... why? The syscall receives no args and returns the page size through
> the get_error() path which retrieves the syscall result.

doesn't declaring it using printargs in the syscall list work ?

> After talking to Arnd Bergmann, we might rework the whole syscall thing
> for this arch to implement the generic syscall ABI.
> Therefore, I'm not really sure what to do with this patch, as it works
> fine with current nios2 available kernel and toolchain.

i'd be fine with merging it since it works as-is, but i'm not an strace 
maintainer, so i don't get to say :)

> Is it possible to take this and then change the implementation once
> the generic syscall ABI is implemented?

i would think that the existing ptrace ABI would remain unchanged, just the 
syscall #'s would get rewritten (as well as some get added/removed).  so most 
of your patch would still work ... just update the syscall list file.
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