[PATCH 0/6] Avoid PLT in i386 syscalls

[H.J. Lu]

On Thu, Oct 22, 2015 at 5:09 AM, Andreas Schwab <schwab@suse.de> wrote:
> "H.J. Lu" <hjl.tools@gmail.com> writes:
>
>> On Wed, Oct 21, 2015 at 9:00 AM, Andreas Schwab <schwab@suse.de> wrote:
>>> One of these patches probably broke powerpc.
>>>
>>
>> Which one?
>
> 4/6.  You must use INTERNAL_SYSCALL_ERRNO to extract the errno
> value from an INTERNAL_SYSCALL.
>

There are

H.J. Lu (6):
  Add INLINE_SYSCALL_ERROR_RETURN
  Use INLINE_SYSCALL_ERROR_RETURN
  Avoid reading errno in syscall implementations
  Use INTERNAL_SYSCALL and INLINE_SYSCALL_ERROR_RETURN
  Optimize i386 syscall inlining
  i386: Remove syscall assembly codes with 6 arguments

   Use INTERNAL_SYSCALL and INLINE_SYSCALL_ERROR_RETURN_VALUE

    This patch uses INTERNAL_SYSCALL and INLINE_SYSCALL_ERROR_RETURN_VALUE
    to avoid reading and writing errno directly so that we don't need to
    call __x86.get_pc_thunk.reg to load PC into reg in case there is an
    error.

      * sysdeps/unix/sysv/linux/i386/brk.c (__brk): Use
      INLINE_SYSCALL_ERROR_RETURN_VALUE.
      * sysdeps/unix/sysv/linux/i386/fxstatat.c (__fxstatat):
      Likewise.
      * sysdeps/unix/sysv/linux/i386/setegid.c (setegid): Likewise.
      * sysdeps/unix/sysv/linux/i386/seteuid.c (seteuid): Likewise.
      * sysdeps/unix/sysv/linux/i386/fxstat.c (__fxstat): Use
      INTERNAL_SYSCALLINTERNAL_SYSCALL and
      INLINE_SYSCALL_ERROR_RETURN_VALUE.
      * sysdeps/unix/sysv/linux/i386/lockf64.c (lockf64): Likewise.
      * sysdeps/unix/sysv/linux/i386/lxstat.c (__lxstat): Likewise.
      * sysdeps/unix/sysv/linux/i386/sigaction.c (__libc_sigaction):
      Likewise.
      * sysdeps/unix/sysv/linux/i386/xstat.c (__xstat): Likewise.

How does it impact powerpc?  Do you have a commit number?


-- 
H.J.