My First C program

Open a file in text editor, Lets say hello.c is the C file.

vim hello.c

or

gedit hello.c 

Write a simple C program to print Hello world (Copy paste the below content in it and save the file.)

Compile

Before starting compilation, Please check if the shakti-tools are installed.

riscv64-unknown-elf-gcc hello.c -o hello.elf

On successful compilation, a executable binary named hello.elf will be generated.

Run

The executable is ready. Now execute the program using spike and pk. spike is the hardware simulator that simulates RISC-V. pk is the proxy kernel, which provides drivers to use the peripherals.

spike $(which pk) hello.elf

Output:

Hello World

Object dump for the compiled C Program

objdump displays the assembly code contained in an elf file.

riscv64-unknown-elf-objdump -d hello.elf &> hello.dump

Use vim or gedit to view the objdump file created i.e hello.dump

vim hello.dump

or

gedit hello.dump