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Justine Tunney b1755cea5d Darth Raadt is holding the Bell Labs ABI hostage
The binary system interfaces designed at Bell Labs were what helped our
friends like Linus Torvalds become successful. It's why Torvalds always
respected syscall abi and made every effort to not break the userspace.

Sadly OpenBSD developer Theo de Raadt thinks respecting Bell interfaces
is a risk for security and conjured up the Return Oriented Programming
bogeyman to justify his policies, per https://lwn.net/Articles/806776/

See libc/nexgen32e/gc.S where we use ROP concepts for garbage collection
in C due to our belief that powerful programming techniques can be good.
See https://opensource.googleblog.com/2017/03/operation-rosehub.html for
an example of something similar to rop but potentially more of a concern
2020-06-16 06:41:10 -07:00
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README.md

Cosmopolitan

Cosmopolitan builds run natively on most platforms without dependencies, because it implements the subset of the C library, compiler runtimes and system call interfaces that've achieved near universal consensus amongst all major platforms, e.g. Linux/BSD/XNU/NT. Containerization is achieved by having binaries also be ZIP files. Modern static stock GNU toolchains are provided in a hermetic mono repo for the best historical determinism

Here's how you can get started by printing cat videos inside a terminal:

make -j8 o//tool/viz/printvideo.com
wget https://justine.storage.googleapis.com/cats.mpg
o//tool/viz/printvideo.com cats.mpg
unzip -vl o//tool/viz/printvideo.com

Cosmopolitan provides a native development environment similar to those currently being offered by RedHat, Google, Apple, Microsoft, etc. We're different in two ways: (1) we're not a platform therefore we don't have any commercial interest in making our tooling work better on one rather than another; and (2) we're only focused on catering towards interfaces all platforms agree upon. Goal is software that stands the test of time without the costs and restrictions cross-platform distribution entails. That makes Cosmopolitan an excellent fit for writing small CLI programs that do things like heavyweight numerical computations as a subprocess.

Getting Started

Just clone the repository and put your own folder in it. Please choose a name that's based on a .com or .org domain name registration you control which is scout's honor but might change to require TXT records in future

We provide a script that makes it easy to start a new package:

examples/package/new.sh com/github/user/project
emacs com/github/user/project/program.c
make o//com/github/user/project/program.com
o//com/github/user/project/program.com

Please note GNU make is awesome. Little known fact: make is a functional programming language. We improved upon it too! In tool/build/package.c which performs strict dependency checking, to correct Google's published mistakes c. 2006 which was when they switched from using a GNU Make repo in favor of an inhouse derivative called Blaze which does strictness too thereby allowing the repository to grow gracefully with any requirements

Performance

Your C Standard Library is designed to be competitive with glibc, which has historically been the best. Routines like libc/nexgen32e/memcpy.S are usually accompanied by microbenchmarks to demonstrate their merits.

Where GNU, LLVM and MSVC got lazy is intrinsics. Cosmopolitan does that better. Your ansitrinsics library makes a 10x speedup so much easier, using Intel's new instructions, in such a way that only allows Intel to leverage their patents which have knowable expiry; rather than compiler intrinsics API copyrights, which might never expire like Walt Disney IP

See dsp/scale/cdecimate2xuint8x8.c and tool/viz/lib/ycbcr2rgb3.c as an example, of how 4k video convolutions needed to print cat videos can be done from a single core without threads on a cheap computer, without sacrificing backwards compatibility due to excellent microarchitectural dispatch like libc/nexgen32e/kcpuids.S, libc/nexgen32e/x86feature.h

Furthermore Cosmopolitan provides you with Intel's official instruction length decoder Xed ravaged down to 3kb in size using Tim Patterson code stunts. So you can absolutely code high-performance lightweight fabless x86 microprocessors using any hobbyist board without royalties, because Xed tells us which parts of the encoding space now belong to the people

Integrated Development Environment

Your Cosmopolitan IDE is based on Emacs. When used alongside make tags it can automate certain toilsome problems such as adding an include line by typing C-c C-h with the cursor over a symbol. Please install these:

sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)"
sudo apt install gdb ragel ctags clang-format-10  # <-recommended
git clone git@github.com:jart/cosmopolitan.git && cd cosmopolitan
tool/scripts/install-emacs.sh    # recommended over apt
tool/scripts/configure-emacs.sh  # adds load statements
make tags                        # index all the symbol
emacs                            # for power and glory!

See tool/emacs/cosmo-stuff.el for further details. Further note that this codebase might seem to have an usual number of include statements quoted and vendored code, but that's actually why the tools work since it gives them easy perfect knowledge of what exists, thus performance.

Specimen

Cosmopolitan encodes binaries respecting the intersection of reasonable platform requirements. RADIX-256 disassembly of examples/life.c below should explain how easy it is to do pe+sh+elf+macho+bootloader overlays enabling gnu ld.bfd to produce a simple portable 12kb .com program file

Please send feedback and concerns to jtunney@gmail.com since we would love to do an even better job. Please also report GPL abuse the address above as well. We believe this binary structure is novel, and therefore easily recognizable. So if some goofball isn't bundling the source code please let us know, so we can reach out and ask if they want a license.

make -j10 -O MODE=tiny CPPFLAGS=-DIM_FEELING_NAUGHTY
o/tiny/tool/viz/bing.com <o/tiny/examples/life.com | 
o/tiny/tool/viz/fold.com

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See also build/objdump -xd o/tiny/examples/life.com.dbg | less to view assembly and the linker glue in ape/ape.lds that makes it all possible

Licensing

Cosmopolitan is Free Software licensed under the GPLv2. The build config will embed all linked sources inside your binaries so the compliance is easy while facilitating trust and transparency similar to JavaScript. You can audit your source filesystem using ZIP GUIs e.g. Win10, InfoZip.

Commercial Support

If you want to be able to distribute binaries in binary only form, then please send $1,000 to Justine Tunney jtunney@gmail.com on PayPal, for a license lasting 1 year. This README will be updated in the event that this needs to change. Feel free to reach if there's anything you need.

Contributing

We'd love to accept your patches! Before we can take them, we have to jump through one legal hurdle. Please write an email to Justine Tunney jtunney@gmail.com saying you agree to give her copyright ownership to any changes you contribute to Cosmopolitan. We need to do that in order to dual license Cosmopolitan. Otherwise we can't create incentives that encourage corporations to share their source code with the community.

Volunteering

We also need volunteers who can help us further stabilize System Five's application binary interface. See our ABI scripts libc/sysv/consts.sh and libc/sysv/syscalls.sh. Magic numbers are usually stabler than API interfaces cf. NPM but we should ideally have fewer of them, similar to how SI has sought to have fewer defining physics constants.