x86 Bare Metal Examples • Hacker News Board

Re: x86 Bare Metal Examples

#51

Post by dvt » Tue, Mar 19, 2019, 7:30 PM UTC

oldsklgdfth wrote: post #34

Looking at the skills section on his webpage: http://www.cirosantilli.com/skills/ This seems like the most honest self-assessment I have seen of one's skills.

I literally wrote a book on Meteor.js and still have to check the manual for stuff all the time. The fact that engineering interviews are essentially roast sessions / pop quizzes is insane.

I interviewed with Snapchat a few years ago and was asked to write a Sudoku solver. Some context: I had never played Sudoku in my life, lol. I came up with a naive (unoptimized, unrefined) solution and didn't get past their third round.

Re: x86 Bare Metal Examples

#52

Post by dang » Tue, Mar 19, 2019, 7:31 PM UTC

swayvil wrote: post #38

emourkai wrote: post #4

I'm kind of curious who's behind this Ciro Santili guy. He(?) seems to be doing a ton of interesting github repos, a great deal of informative stackoverflow answers and who knows what else. Also, some anti-CCP stuff in the profile?

I hear he's passionate.

Could you please stop posting unsubstantive comments to Hacker News?

Re: x86 Bare Metal Examples

#53

Post by throwaway2380 » Tue, Mar 19, 2019, 9:26 PM UTC

oldsklgdfth wrote: post #34

Looking at the skills section on his webpage: http://www.cirosantilli.com/skills/ This seems like the most honest self-assessment I have seen of one's skills.

> When I tell to managers that I’m good at documenting, they always say: great, we need better documentation! But then, one of the following may happen:

I relate so much it hurts. The industry at large seems unable to see the lost opportunity of significant investment in technical documentation.

Re: x86 Bare Metal Examples

#54

Post by thisacctforreal » Wed, Mar 20, 2019, 5:59 AM UTC

emourkai wrote: post #4

I'm kind of curious who's behind this Ciro Santili guy. He(?) seems to be doing a ton of interesting github repos, a great deal of informative stackoverflow answers and who knows what else. Also, some anti-CCP stuff in the profile?

Ah, this guy! I found him through his stack overflow maybe a year ago, definitely cool.

Re: x86 Bare Metal Examples

#55

Post by swayvil » Wed, Mar 20, 2019, 2:36 PM UTC

dang wrote: post #52

swayvil wrote: post #38

Earlier quoted context omitted.

I hear he's passionate.

Could you please stop posting unsubstantive comments to Hacker News?

I prefer "subtle".

Re: x86 Bare Metal Examples

#56

Post by tracker1 » Wed, Mar 20, 2019, 10:18 PM UTC

zymhan wrote: post #41

oldsklgdfth wrote: post #34

Looking at the skills section on his webpage: http://www.cirosantilli.com/skills/ This seems like the most honest self-assessment I have seen of one's skills.

Wow, that is how I've wanted to answer the "on a scale of 1-10, how would you rate your XYZ skills". I really wish more people had some benchmark for the numbers they throw out there.

Similarly, if I see more than one or two 9-10 on self-assessed skills, I feel that's an invitation to "sock it to me" on knowledge questions when interviewing someone. When people are 4-6 I'm a lot more reasonable.

Re: x86 Bare Metal Examples

#57

Post by mammalutte » Thu, Mar 21, 2019, 5:03 AM UTC

Do you have any hello-world examples of how to load a 64bit ELF kernel with a GRUB2 bootloader? I don't mean Linux kernel, I literally mean a simple program that only prints "hello world". Something like this [1] but in long mode.

[1] https://wiki.osdev.org/Bare_Bones

Re: x86 Bare Metal Examples

#58

Post by karmakaze » Thu, Mar 21, 2019, 8:48 AM UTC

cirosantilli wrote: post #45

oldsklgdfth wrote: post #34

Looking at the skills section on his webpage: http://www.cirosantilli.com/skills/ This seems like the most honest self-assessment I have seen of one's skills.

That was copied from failed Google interview BTW :-) To me the main problem is that I'm always afraid to put a 5, who can not check manuals? ;-) I'm also more and more of the opinion that (impact of projects) is more important than (current skills).

> I'm always afraid to put a 5

I realized one day why I behave in ways like this. It's from working in a clear-cut environment that I treat normal communication literally. Someone once commented that I 'never lie' which I understood was much more true than false but ultimately still false.

Re: x86 Bare Metal Examples

#59

Post by rramadass » Sat, Mar 23, 2019, 5:23 AM UTC

_chiliconcarne wrote: post #40

I'll drop a question since I see Ciro Santilli is around. I want to start learning low level programming. Yet, I feel awfully overwhelmed every single time I try. Any recommendations you might have?

Start with the book "Computer Systems: A Programmer's perspective by Bryant and O'Hallaron". Become fluent in C and its toolchains and you will be able to program everything (learn assembly only as needed).