Bronzebeard is a Python RV32i assembler building bare-metal bootable code for GD32V (Longan Nano and Wio Lite)
https://github.com/theandrew168/bronzebeard

Example of usage:
* A Mandebrot ensemble:
https://github.com/enthusi/mandelbrot_riscv_assembler
* Lz4 decoder
https://github.com/enthusi/lz4_rv32i_decode

Article describing settings everything for a DIY bare-metal booting with GNU Toolchain and OpenOCD
https://vivonomicon.com/2020/02/11/bare-metal-risc-v-development-with-the-gd32vf103cb/

I wrote an article about Linux syscall and RISC-V assembly:
https://popolon.org/gblog3/?p=1049

Hello World is an example of simple Hello World in RISC-V assembly on Linux.
the .bash_history contains a quick and dirty backup of some commands used on the Qemu VM to assemble/link it (and compile TIC80)

=== RISC-V Vector extension 0.7.1 ===
* build_binutils_rvv-0.7.1.sh
Fetch and compile binutils (including gnu as and ld) to assemble/link RISC-V Vextor extension v0.7.1 (RVV-0.1.7) as used on AllWnner D1

To compile your piece of assembly code (march is mandatory):
/opt/rvv-0.7.1/bin/as -march=rv64gcv -o HelloWorld.o HelloWorld.s
/opt/rvv-0.7.1/bin/ld -o HelloWorld HelloWorld.o