Introduction: RISC-V, an open-source instruction set architecture, has gained popularity for its simplicity and flexibility. In this article, we will delve into RISC-V assembly on Windows using SharpRISCV, an assembler that allows the building of various executables. Additionally, we will explore simulation using a RISC-V virtual machine. programming SharpRISCV Assembler: SharpRISCV provides both an online interface and a desktop command-line tool for Windows. The online interface can be accessed at . https://rizwan3d.github.io/SharpRISCV/ The desktop tool can be used for various purposes: Console Output: SharpRISCV.exe -i file.s -o console Build Bin File: SharpRISCV.exe -i file.s -o out.o -p bin Build Windows EXE: SharpRISCV.exe -i file.s -o out.exe -p pe Build Linux ELF: SharpRISCV.exe -i file.s -o out.elf -p elf Build HEX: SharpRISCV.exe -i file.s -o out.hex -p hex RISC-V Virtual Machine and Simulation: The RISC-V Virtual Machine is an emulator implementing a 32-bit RISC-V processor model. While still in the early stages, it supports ELF64 and can be found at . https://github.com/rizwan3d/riscv64-vm/releases Example: Hello World in RISC-V Assembly: # Risc-V Assembler program to print "Hello World!" # to stdout. # a0-a2 - parameters to Linux function services # a7 - Linux function number # Setup the parameters to print hello world # and then call Linux to do it. .text _start: addi a0, x0, 1 # 1 = StdOut la a1, helloworld # load address of helloworld addi a2, x0, 13 # length of our string addi a7, x0, 64 # Linux write system call ecall # Call Linux to output the string # Setup the parameters to exit the program # and then call Linux to do it. addi a0, x0, 0 # Use 0 return code addi a7, x0, 93 # Service command code 93 terminates ecall # Call Linux to terminate the program .data helloworld: .string "Hello World!\n" To execute this code, open SharpRISCV online or use the desktop tool to build an ELF file. Pass the resulting output.elf to riscv64-vm.exe to observe the result. SharpRISCV.exe -i file.s -o out.elf -p elf riscv64-vm.exe out.elf Conclusion: RISC-V assembly programming on Windows using SharpRISCV provides a versatile and accessible environment. The integration of a RISC-V virtual machine for simulation enhances the learning experience. For those interested, the projects can be found on GitHub: and . Don't forget to start the repositories to show your support! SharpRISCV RISC-V Virtual Machine
