On Sat, Jul 22, 2023 at 8:36 PM Kito Cheng via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> OK for trunk, thanks:)
I have now backported it to 13 branch.
Thanks,
Andrew
>
> Andrew Pinski via Gcc-patches <gcc-patches@gcc.gnu.org> 於 2023年7月23日 週日
> 09:07 寫道：
>
> > The problem -fasynchronous-unwind-tables is on by default for riscv linux
> > We need turn it off for crt*.o because it would make __EH_FRAME_BEGIN__
> > point
> > to .eh_frame data from crtbeginT.o instead of the user-defined object
> > during static linking.
> >
> > This turns it off.
> >
> > OK?
> >
> > libgcc/ChangeLog:
> >
> > * config.host (riscv*-*-linux*): Add t-crtstuff to tmake_file.
> > (riscv*-*-freebsd*): Likewise.
> > * config/riscv/t-crtstuff: New file.
> > ---
> > libgcc/config.host | 4 ++--
> > libgcc/config/riscv/t-crtstuff | 5 +++++
> > 2 files changed, 7 insertions(+), 2 deletions(-)
> > create mode 100644 libgcc/config/riscv/t-crtstuff
> >
> > diff --git a/libgcc/config.host b/libgcc/config.host
> > index 9d7212028d0..c94d69d84b7 100644
> > --- a/libgcc/config.host
> > +++ b/libgcc/config.host
> > @@ -1304,12 +1304,12 @@ pru-*-*)
> > tm_file="$tm_file pru/pru-abi.h"
> > ;;
> > riscv*-*-linux*)
> > - tmake_file="${tmake_file} riscv/t-softfp${host_address} t-softfp
> > riscv/t-elf riscv/t-elf${host_address} t-slibgcc-libgcc"
> > + tmake_file="${tmake_file} riscv/t-crtstuff
> > riscv/t-softfp${host_address} t-softfp riscv/t-elf
> > riscv/t-elf${host_address} t-slibgcc-libgcc"
> > extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o
> > crtendS.o crtbeginT.o"
> > md_unwind_header=riscv/linux-unwind.h
> > ;;
> > riscv*-*-freebsd*)
> > - tmake_file="${tmake_file} riscv/t-softfp${host_address} t-softfp
> > riscv/t-elf riscv/t-elf${host_address} t-slibgcc-libgcc"
> > + tmake_file="${tmake_file} riscv/t-crtstuff
> > riscv/t-softfp${host_address} t-softfp riscv/t-elf
> > riscv/t-elf${host_address} t-slibgcc-libgcc"
> > extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o
> > crtendS.o crtbeginT.o"
> > ;;
> > riscv*-*-*)
> > diff --git a/libgcc/config/riscv/t-crtstuff
> > b/libgcc/config/riscv/t-crtstuff
> > new file mode 100644
> > index 00000000000..685d11b3e66
> > --- /dev/null
> > +++ b/libgcc/config/riscv/t-crtstuff
> > @@ -0,0 +1,5 @@
> > +# -fasynchronous-unwind-tables -funwind-tables is on by default for riscv
> > linux
> > +# We turn it off for crt*.o because it would make __EH_FRAME_BEGIN__ point
> > +# to .eh_frame data from crtbeginT.o instead of the user-defined object
> > +# during static linking.
> > +CRTSTUFF_T_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables
> > --
> > 2.39.1
> >
> >
