Linux powerpc new system call instruction and ABI

Joakim Tjernlund Joakim.Tjernlund at
Wed May 19 17:33:43 AEST 2021

On Wed, 2021-05-19 at 02:13 +0300, Dmitry V. Levin wrote:
> Hi,
> On Thu, Jun 11, 2020 at 06:12:01PM +1000, Nicholas Piggin wrote:
> [...]
> > - Error handling: The consensus among kernel, glibc, and musl is to move to
> >   using negative return values in r3 rather than CR0[SO]=1 to indicate error,
> >   which matches most other architectures, and is closer to a function call.

What about syscalls like times(2) which can return -1 without it being an error?


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