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Re: [PATCH 6/6] i386: Remove syscall assembly codes with 6 arguments
- From: Andreas Schwab <schwab at suse dot de>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: GNU C Library <libc-alpha at sourceware dot org>
- Date: Mon, 14 Sep 2015 16:30:50 +0200
- Subject: Re: [PATCH 6/6] i386: Remove syscall assembly codes with 6 arguments
- Authentication-results: sourceware.org; auth=none
- References: <20150914142005 dot GF26042 at gmail dot com>
"H.J. Lu" <hjl.tools@gmail.com> writes:
> ifeq ($(subdir),misc)
> sysdep_routines += ioperm iopl vm86
> +# %ebp may be used to pass the 6th argument to syscall.
> +CFLAGS-epoll_pwait.c += -fomit-frame-pointer
> +CFLAGS-mmap.c += -fomit-frame-pointer
> +CFLAGS-mmap64.c += -fomit-frame-pointer
What happens if the compiler didn't succeed in eliminating the frame
pointer?
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
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