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.
