Hi, Ruoyao, On Thu, Sep 30, 2021 at 11:43 PM Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> wrote: > > On Mon, 2021-09-27 at 14:42 +0800, Huacai Chen wrote: > > diff --git a/arch/loongarch/vdso/gen_vdso_offsets.sh > > b/arch/loongarch/vdso/gen_vdso_offsets.sh > > new file mode 100755 > > index 000000000000..7da255fea213 > > --- /dev/null > > +++ b/arch/loongarch/vdso/gen_vdso_offsets.sh > > @@ -0,0 +1,14 @@ > > +#!/bin/sh > > +# SPDX-License-Identifier: GPL-2.0 > > + > > +# > > +# Derived from RISC-V and ARM64: > > +# Author: Will Deacon <will.deacon@xxxxxxx> > > +# > > +# Match symbols in the DSO that look like VDSO_*; produce a header > > file > > +# of constant offsets into the shared object. > > +# > > + > > +LC_ALL=C > > I'm wondering whether this line is really useful... There is no "export" > here so the variable won't be passed to the environment of the sed > command below. Have you encountered some problems with this? It just works for me, and both ARM64 and RISCV are the same. Huacai > > > +sed -n -e 's/^00*/0/' -e \ > > +'s/^\([0-9a-fA-F]*\) . VDSO_\([a-zA-Z0-9_]*\)$/\#define > > vdso_offset_\2\t0x\1/p'
