explanations, uniform layout

This commit is contained in:
PoroCYon 2019-04-26 01:57:10 +02:00
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commit 0d05d32b1d
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* [International Shipping by Suricrasia Online
](https://bitbucket.org/blackle_mori/international-shipping)
* [Ninjadev dabbles in intros](https://github.com/aleksanb/fourkay)

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## The C runtime
Even though C is a relatively low-level language, some assembly code is needed
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For exiting the program when not using `__libc_start_main`, you can just use a
bare syscall, or `int3`.

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## Process creation
Main source: "How programs get run", on lwn
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second lwn article for details.
* For dynamic linking-related stuff on program entry, see [this
page](/explain/rtld)

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## Dynamic linking
Dynamic linking is the process of loading code and data from shared libraries.
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read the hashtables.
Smol uses these two tricks to achieve an even smaller binary size.

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## Syscalls
Main source: "Anatomy of a System Call", on lwn
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Syscalls are invoked using the `swi #0` instruction. The syscall number is
placed in `r7`, arguments are placed in `r0` through `r6`. The return value is
placed in the `r0` register.

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## vondehi
Vondehi is an in-memory unpacker for data compressed with `gzip` or `xz` (or
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3. Run `execveat` on the memfd.
Of course, the code itself is hand-optimized x86 assembly, and is very crazy.

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### Talk with us
Join `#lsc` on IRCnet!

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### Las explains the state of SDL at Revision
## Las explains the state of SDL at Revision
(Context: he is the organizer of the intro compos. [This entry](https://demozoo.org/productions/202460/) uses SDL even though it wasn't allowed in the rules.)
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```
(edited irrelevant stuff out. -pcy)

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## unlord (LCA 2019)
## Talks
### unlord (LCA 2019)
[pdf](https://people.xiph.org/~unlord/LCA2019.pdf); [video](https://www.youtube.com/watch?v=J5WX-wN_RKY)
## Shiz & PoroCYon (Revision 2019)
### Shiz & PoroCYon (Revision 2019)
[pdf](https://pcy.ulyssis.be/pres/Lin.pdf); [video](https://www.youtube.com/watch?v=a03HXo8a_Io)

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## Some notes about the target platform
We'll mostly target the Revision compo rules, as it's the biggest party, and

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* [Oidos](https://www.pouet.net/prod.php?which=69524), [untested Linux port
](https://gitlab.com/PoroCYon/oidos)
* [Axiom](https://github.com/monadgroup/axiom/) is "supposed" to work