You Can Learn RISC-V Assembly in 10 Minutes | Getting Started RISC-V Assembly on Linux Tutorial

SQUAD! Welcome back! In this video, we talk about the RISC-V processor architecture. RISC-V was created as an open source processor architecture to get away from the models that Intel and ARM had been using in charging royalties for their process architectures. We talk about how to write a simple "Hello World" for this architecture, as well as how to emulate a RISC-V process on a non-RISC-V system.

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[gljames]

I did some mips at school. Assembly was fun to mess around and get close to the architecture, but I definitely enjoy the benefits of modern languages like return types.

[donghyunshin]

Just subscribed yesterday after finding your other video while searching for a riscv video. And today you upload a riscv one. What a coincidence 😂. I'm really appreciating your video btw.

[Nightwulf]

Nicely done and explained. Only thing I personally would change is, that I would use -ld and not -gcc to just make clearer, what is happening. What you actually call is the linker, not the C-Compiler.

[Gigaamped]

lmao this was so fast but it saved me from 2 weeks of not figuring out how to progress in my CPE assignment so thank you a million for the help. My prof assumes we know everything

[michalkupczyk]

The length of the ascii string is 12 IMHO. (was 13 with comma). It is accessing (and printing) one more character, potentially beyond process' address space, I am guessing ELF executable is padded to 512 byte blocks or something. Methinks you could get an exception from kernel if your 13th byte is outside process space.

[kkenzuro]

how did you run a risc-v compiled executable on your host machine directly like "./hello" without passing it to qemu-riscv64? Is there some trick that your Linux host is using that I'm not aware of?

[xcde]

I would love more videos on RISC-V. Cheers

[aakashhemadri]

Looking forward to more videos on RISCV! Can you make a getting started video, with resources for the interested to explore on their own? Also any cheap hardware to run risc programs directly?

[lis]

my last contact with assembler was in early 2000s, hobbysticaly playing around 6502 connected to rest of c64 peripherials.
Clearing screen was much more fun when one could write zeroes directly in the memory. Yeah, there was a kernal, but who would care ;p.
Now it's 2022 and i am trying wrap my head around concept of writing in asm but using operating system's API to do heavy lifting.
And riscv, fully open source ISA, future is now old man ;p
Thanks for great video, was bit too short, but definetely conveyed concept :)

[kevinescobedo]

Great video! I had a question maybe you could answer. Wouldn't the li instruction be better than using addi when one of the operands is 0? Like, instead of "addi a7, zero, 64", you could just do "li a7, 64".

[BenjaminEggerstedt]

Cool stuff! Looking forward to the next videos!

[JonRowlison]

Can you drop in what the compiled opcode bytes look like? Curious to see how the compiler outputs the memory address and the opcode bytes... I've done a lot of development in HLL but assembly only on 65C816-class CPUs.

[hstrinzel]

TOTALLY AWESOME! The coding in RISC V looks quite neat. Could you write THE SAME thing for an ARM 64, like it would compile on a Raspberry Pi4 on Linux? That way it would make it super-easy to learn the differences of the basic assembly infrastructure between those processors. Do the ARM64 people also have a convention with 8 function parameters to start with, or it comes on the stack? Also, you MAY have done this already, and in that case, could you point me to that Hello World ARM Assembly video? I'm such a newbie... THANK YOU SO MUCH. I really like your low-level-learning series, it always comes in small chunks that one can really understand...

[AlessioSangalli]

Hello, as usual nice video. Just a small question, is -static really required when linking these examples?

[KangJangkrik]

This typical person who loves retro music like "Astrophysics" channel, which is my taste too :)

[OriginalJetForMe]

I wish you showed how to set up and invoke QEMU, and where to get images.

[parsishashank]

Looking forward for more tutorials on RISCV .
It would be helpful if you can reduce your pace a bit.(I felt it was a bit fast)(just a friendly suggestion)

[sudlow]

The miscounting of string length here highlights the general issue of having to count the string length manually, which is already difficult to get right at 12 bytes. Are there any tools in the compiler or IDE set-up to automate this counting for longer texts etc. ?

[funkyboy]

make more of RISC-V, i wnat ot learn it.

[AlessioSangalli]

Also - I see you used section 3 of the manual for exit(). I haven't really done much Linux syscall programming but shouldn't we check section 2 in this particular case?