prologic @twtxt.net
 (13h ago)

(#kaiqxgq) The compiler technique Iā€™m using here is to not ā€œemitā€ most of the runtime if itā€™s actually never used in your program, and also dropping dead code in the SSA pass.

#px7vvka
prologic @twtxt.net
 (17h ago)

Hmmm I need to figure out a way to reduce the no. of lines of code / complexity of the ARM64 native code emitter for mu (Āµ). Itā€™s insane really, itā€™s a whopping ~6k SLOC, the next biggest source file is the compiler at only ~800 SLOC šŸ¤”

#kaiqxgq
movq @www.uninformativ.de
 (19h ago)

(#gslvc3q) @prologic@twtxt.net That might be a challenge, at least in 16-bit Real Mode: The OS follows the model of COM files on DOS, i.e. the size of the binary cannot exceed 64 KiB and heap+stack of the running program will have to fit into that same 64 KiB. šŸ˜… (The memory layout is very rigid, each process gets such a 64 KiB slice.)

And in 64-bit Long Mode, there is no ā€œkernelā€ yet. The thing in the video is literally just a small bare-metal program.

But some day, maybe. šŸ˜ƒ

#q6pehia
movq @www.uninformativ.de
 (1d ago)

My little toy operating system from last year runs in 16-bit Real Mode (like DOS). Since Iā€™ve recently figured out how to switch to 64-bit Long Mode right after BIOS boot, I now have a little program that performs this switch on my toy OS. It will load and run any x86-64 program, assuming itā€™s freestanding, a flat binary, and small enough (< 128 KiB code, only uses the first 2 MiB of memory).

Here Iā€™m running a little C program (compiled using normal GCC, no Watcom trickery):

https://movq.de/v/b27ced6dcb/los86%2D64.mp4

https://movq.de/v/b27ced6dcb/c.png

Next steps could include:

  • Use Rust instead of C for that 64-bit program?
  • Provide interrupt service routines. (At the moment, it just keeps interrupts disabled.)
#gslvc3q
lyse @lyse.isobeef.org
 (4d ago)

(#o3hv4aq) @zvava@twtxt.net I might misunderstand what you wrote, but only hashing the message once and storing the hash together with the message in the database seems a way better approch to me. Itā€™s fixed and doesnā€™t change, so thereā€™s no need to recompute it during runtime over and over and over again. You just have it. And can easily look up other messages by hash.

#pmmlyta
lyse @lyse.isobeef.org
 (5d ago)

Oh great, I received an e-mail that my SMTP credentials have been exposed. Once again, just another shitty scanner that generates garbage reports from tests it doesnā€™t understand. Thank you for nothing!

conf := &Config{
    SMTPHost: "smtp.example.com",
    SMTPPort: 587,
    SMTPUser: "user",
    SMTPPass: "hunter2",
    SMTPFrom: "from@example.com",
}
#eljhddq
lyse @lyse.isobeef.org
 (5d ago)

(#c6rrdzq) @prologic@twtxt.net @movq@www.uninformativ.de A crocodile had bitten the big submarine internet cable that connects Australia to Europe. The investigations revealed that some construction work last week accidentally tore up the protective layer around it. That went unnoticed, unfortunately, so marine life had an easy job today. For just 40 minutes, they were quite fast in repairing the damage if you ask me! These communication cables are fricking large.

Just kidding, I completely made that up. :-D I didnā€™t notice any outage either. But I didnā€™t try to connect to Down Under at the time span in question.

#hsmdvqq