[PATCH] i386: Assembly Implementation cleanup

[H.J. Lu]

On Fri, Jul 3, 2015 at 8:41 AM, Adhemerval Zanella
<adhemerval.zanella@linaro.org> wrote:
> This patch removes i386 assembly implementation for epoll_wait, mmap,
> mmap64, semtimeop now that i386 have 6 argument syscall support from
> C code.
>
> The mmap implementation used is the wordsize-32 generic linux one.
>
> Tested in i386.
>
> ---
>
>         * sysdeps/unix/sysv/linux/i386/mmap.c: New file.
>         * sysdeps/unix/sysv/linux/i386/epoll_pwait.S: Remove file.
>         * sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
>         * sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
>         * sysdeps/unix/sysv/linux/i386/semtimedop.S: Likewise.
>

What is the motivation?  6 argument syscalls aren't really inlined.
They put arguments on stack and call __libc_do_syscall.  It is
slower than assembly code.

-- 
H.J.