Commit Graph

9 Commits

Author SHA1 Message Date
Kartik K. Agaram e72e5ad297 . 2021-08-10 05:52:48 -07:00
Kartik K. Agaram c95648c960 reading from streams
The Mu shell has no string literals, only streams. No random access,
only sequential access. But I've been playing fast and loose with its
read pointer until now. Hopefully things are cleaned up now.
2021-07-03 18:27:01 -07:00
Kartik K. Agaram 0e9503d739 print call stack on all low-level errors 2021-05-15 00:15:24 -07:00
Kartik K. Agaram 71e4f38129 7842 - new directory organization
Baremetal is now the default build target and therefore has its sources
at the top-level. Baremetal programs build using the phase-2 Mu toolchain
that requires a Linux kernel. This phase-2 codebase which used to be at
the top-level is now under the linux/ directory. Finally, the phase-2 toolchain,
while self-hosting, has a way to bootstrap from a C implementation, which
is now stored in linux/bootstrap. The bootstrap C implementation uses some
literate programming tools that are now in linux/bootstrap/tools.

So the whole thing has gotten inverted. Each directory should build one
artifact and include the main sources (along with standard library). Tools
used for building it are relegated to sub-directories, even though those
tools are often useful in their own right, and have had lots of interesting
programs written using them.

A couple of things have gotten dropped in this process:
  - I had old ways to run on just a Linux kernel, or with a Soso kernel.
    No more.
  - I had some old tooling for running a single test at the cursor. I haven't
    used that lately. Maybe I'll bring it back one day.

The reorg isn't done yet. Still to do:
  - redo documentation everywhere. All the README files, all other markdown,
    particularly vocabulary.md.
  - clean up how-to-run comments at the start of programs everywhere
  - rethink what to do with the html/ directory. Do we even want to keep
    supporting it?

In spite of these shortcomings, all the scripts at the top-level, linux/
and linux/bootstrap are working. The names of the scripts also feel reasonable.
This is a good milestone to take stock at.
2021-03-03 22:21:03 -08:00
Kartik Agaram 72c42f90cf 6908 - compiling all floating-point operations
We don't yet support emulating these instructions in `bootstrap`. But generated
binaries containing them run natively just fine.
2020-09-30 21:17:37 -07:00
Kartik Agaram fc42975cf4 6751
More copypasta. I'd be able to remove this duplication if we had first-class
functions, but they involve an accessibility cost.
2020-09-07 22:14:54 -07:00
Kartik Agaram cd94852dbc 6733 - read utf-8 'grapheme' from byte stream
No support for combining characters. Graphemes are currently just utf-8
encodings of a single Unicode code-point. No support for code-points that
require more than 32 bits in utf-8.
2020-08-28 23:24:04 -07:00
Kartik Agaram efe641a030 6632 2020-07-11 00:11:39 -07:00
Kartik Agaram c09c91e185 6612 - reorganize layers 2020-07-05 12:13:28 -07:00