Re: [PATCH] LoongArch: Prepare static PIE support

[Lulu Cheng <chenglulu@loongson.cn>]

LGTM!

Thanks.

在 2022/9/13 下午11:32, Xi Ruoyao 写道:
> Static PIE allows us to extend the ASLR to cover static executables and
> it's not too difficult to support it.  On GCC side, we just pass a group
> of options to the linker, like other ports with static PIE support.
>
> The real implementation of static PIE (rcrt1.o) will be added into Glibc
> later.
>
> gcc/ChangeLog:
>
> 	* config/loongarch/gnu-user.h (GNU_USER_TARGET_LINK_SPEC): For
> 	-static-pie, pass -static -pie --no-dynamic-linker -z text to
> 	the linker, and do not pass --dynamic-linker.
> ---
>   gcc/config/loongarch/gnu-user.h | 6 ++++--
>   1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/gcc/config/loongarch/gnu-user.h b/gcc/config/loongarch/gnu-user.h
> index 664dc9206ad..c5b1afe530d 100644
> --- a/gcc/config/loongarch/gnu-user.h
> +++ b/gcc/config/loongarch/gnu-user.h
> @@ -40,8 +40,10 @@ along with GCC; see the file COPYING3.  If not see
>   #undef GNU_USER_TARGET_LINK_SPEC
>   #define GNU_USER_TARGET_LINK_SPEC \
>     "%{G*} %{shared} -m " GNU_USER_LINK_EMULATION \
> -  "%{!shared: %{static} %{!static: %{rdynamic:-export-dynamic} " \
> -  "-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}}"
> +  "%{!shared: %{static} " \
> +  "%{!static: %{!static-pie: %{rdynamic:-export-dynamic} " \
> +  "-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}} " \
> +  "%{static-pie: -static -pie --no-dynamic-linker -z text}}"
>   
>   
>   /* Similar to standard Linux, but adding -ffast-math support.  */