On Wed, Apr 29, 2020 at 02:06:42PM +0000, Michal Meloun wrote:
> Author: mmel
> Date: Wed Apr 29 14:06:42 2020
> New Revision: 360463
> URL: https://svnweb.freebsd.org/changeset/base/360463
>
> Log:
> Don't allow to use FPU inside of rtld library.
> Clang10 may use FPU instructions for optimizing operations with
> memory blocks. But we don't want to do lengthy save/restore of all
> FPU registers across each rtld_start() call.
>
> MFC after: 3 week
>
> Modified:
> head/libexec/rtld-elf/Makefile
>
> Modified: head/libexec/rtld-elf/Makefile
> ==============================================================================
> --- head/libexec/rtld-elf/Makefile Wed Apr 29 13:45:21 2020
> (r360462)
> +++ head/libexec/rtld-elf/Makefile Wed Apr 29 14:06:42 2020
> (r360463)
> @@ -48,6 +48,9 @@ MLINKS?= rtld.1 ld-elf.so.1.1 \
> rtld.1 ld.so.1
>
> CFLAGS+= -fpic -DPIC $(DEBUG)
> +CFLAGS.armv6+= -mfpu=none
> +CFLAGS.armv7+= -mfpu=none
I cleaned rtld-elf/Makefile of all MD bits, please move this to
arm/Makefile.inc.
> +
> LDFLAGS+= -shared -Wl,-Bsymbolic -Wl,-z,defs -nostdlib -e ${RTLD_ENTRY}
> # Pull in the dependencies that we use from libc
> .include "rtld-libc/Makefile.inc"
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