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.

1 files changed, 0 insertions, 22 deletions

diff --git a/baremetal/shell/main.mu b/baremetal/shell/main.mu
deleted file mode 100644
index eb437b67..00000000
--- a/baremetal/shell/main.mu
+++ /dev/null
@@ -1,22 +0,0 @@
-# Experimental Mu shell
-# A Lisp with indent-sensitivity and infix, no macros. Commas are ignored.
-
-fn main {
-  var sandbox-storage: sandbox
-  var sandbox/esi: (addr sandbox) <- address sandbox-storage
-  initialize-sandbox sandbox
-  var width/eax: int <- copy 0
-  var height/ecx: int <- copy 0
-  width, height <- screen-size 0/screen
-  {
-    render-sandbox 0/screen, sandbox, 2/x, 2/y, width, height
-    {
-      var key/eax: byte <- read-key 0/keyboard
-      compare key, 0
-      loop-if-=
-      # no way to quit right now; just reboot
-      edit-sandbox sandbox, key
-    }
-    loop
-  }
-}