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, 82 deletions

diff --git a/baremetal/400.mu b/baremetal/400.mu
deleted file mode 100644
index 9d0c095f..00000000
--- a/baremetal/400.mu
+++ /dev/null
@@ -1,82 +0,0 @@
-# screen
-sig pixel-on-real-screen x: int, y: int, color: int
-sig draw-grapheme-on-real-screen g: grapheme, x: int, y: int, color: int, background-color: int
-sig cursor-position-on-real-screen -> _/eax: int, _/ecx: int
-sig set-cursor-position-on-real-screen x: int, y: int
-sig show-cursor-on-real-screen g: grapheme
-
-# keyboard
-sig read-key kbd: (addr keyboard) -> _/eax: byte
-
-# tests
-sig count-test-failure
-sig num-test-failures -> _/eax: int
-
-sig string-equal? s: (addr array byte), benchmark: (addr array byte) -> _/eax: boolean
-sig string-starts-with? s: (addr array byte), benchmark: (addr array byte) -> _/eax: boolean
-sig check-strings-equal s: (addr array byte), expected: (addr array byte), msg: (addr array byte)
-
-# streams
-sig clear-stream f: (addr stream _)
-sig rewind-stream f: (addr stream _)
-sig stream-data-equal? f: (addr stream byte), s: (addr array byte) -> _/eax: boolean
-sig check-stream-equal f: (addr stream byte), s: (addr array byte), msg: (addr array byte)
-sig next-stream-line-equal? f: (addr stream byte), s: (addr array byte) -> _/eax: boolean
-sig check-next-stream-line-equal f: (addr stream byte), s: (addr array byte), msg: (addr array byte)
-sig write f: (addr stream byte), s: (addr array byte)
-sig write-stream f: (addr stream byte), s: (addr stream byte)
-sig read-byte s: (addr stream byte) -> _/eax: byte
-sig append-byte f: (addr stream byte), n: int
-#sig to-hex-char in/eax: int -> out/eax: int
-sig append-byte-hex f: (addr stream byte), n: int
-sig write-int32-hex f: (addr stream byte), n: int
-sig write-int32-hex-bits f: (addr stream byte), n: int, bits: int
-sig is-hex-int? in: (addr slice) -> _/eax: boolean
-sig parse-hex-int in: (addr array byte) -> _/eax: int
-sig parse-hex-int-from-slice in: (addr slice) -> _/eax: int
-#sig parse-hex-int-helper start: (addr byte), end: (addr byte) -> _/eax: int
-sig is-hex-digit? c: byte -> _/eax: boolean
-#sig from-hex-char in/eax: byte -> out/eax: nibble
-sig parse-decimal-int in: (addr array byte) -> _/eax: int
-sig parse-decimal-int-from-slice in: (addr slice) -> _/eax: int
-sig parse-decimal-int-from-stream in: (addr stream byte) -> _/eax: int
-#sig parse-decimal-int-helper start: (addr byte), end: (addr byte) -> _/eax: int
-sig decimal-size n: int -> _/eax: int
-#sig allocate ad: (addr allocation-descriptor), n: int, out: (addr handle _)
-#sig allocate-raw ad: (addr allocation-descriptor), n: int, out: (addr handle _)
-sig lookup h: (handle _T) -> _/eax: (addr _T)
-sig handle-equal? a: (handle _T), b: (handle _T) -> _/eax: boolean
-sig copy-handle src: (handle _T), dest: (addr handle _T)
-#sig allocate-region ad: (addr allocation-descriptor), n: int, out: (addr handle allocation-descriptor)
-#sig allocate-array ad: (addr allocation-descriptor), n: int, out: (addr handle _)
-sig copy-array ad: (addr allocation-descriptor), src: (addr array _T), out: (addr handle array _T)
-#sig zero-out start: (addr byte), size: int
-sig slice-empty? s: (addr slice) -> _/eax: boolean
-sig slice-equal? s: (addr slice), p: (addr array byte) -> _/eax: boolean
-sig slice-starts-with? s: (addr slice), head: (addr array byte) -> _/eax: boolean
-sig write-slice out: (addr stream byte), s: (addr slice)
-# bad name alert
-sig slice-to-string ad: (addr allocation-descriptor), in: (addr slice), out: (addr handle array byte)
-sig write-int32-decimal out: (addr stream byte), n: int
-sig is-decimal-digit? c: grapheme -> _/eax: boolean
-sig to-decimal-digit in: grapheme -> _/eax: int
-# bad name alert
-# next-word really tokenizes
-# next-raw-word really reads whitespace-separated words
-sig next-word line: (addr stream byte), out: (addr slice)  # skips '#' comments
-sig next-raw-word line: (addr stream byte), out: (addr slice)  # does not skip '#' comments
-sig stream-empty? s: (addr stream _) -> _/eax: boolean
-sig stream-full? s: (addr stream _) -> _/eax: boolean
-sig stream-to-array in: (addr stream _), out: (addr handle array _)
-sig unquote-stream-to-array in: (addr stream _), out: (addr handle array _)
-sig stream-first s: (addr stream byte) -> _/eax: byte
-sig stream-final s: (addr stream byte) -> _/eax: byte
-
-#sig copy-bytes src: (addr byte), dest: (addr byte), n: int
-sig copy-array-object src: (addr array _), dest-ah: (addr handle array _)
-sig array-equal? a: (addr array int), b: (addr array int) -> _/eax: boolean
-sig parse-array-of-ints s: (addr array byte), out: (addr handle array int)
-sig parse-array-of-decimal-ints s: (addr array byte), out: (addr handle array int)
-sig check-array-equal a: (addr array int), expected: (addr string), msg: (addr string)
-
-sig integer-divide a: int, b: int -> _/eax: int, _/edx: int