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, 64 deletions

diff --git a/apps/tile/float-stack.mu b/apps/tile/float-stack.mu
deleted file mode 100644
index 146995e7..00000000
--- a/apps/tile/float-stack.mu
+++ /dev/null
@@ -1,64 +0,0 @@
-type float-stack {
-  data: (handle array float)
-  top: int
-}
-
-fn initialize-float-stack _self: (addr float-stack), n: int {
-  var self/esi: (addr float-stack) <- copy _self
-  var d/edi: (addr handle array float) <- get self, data
-  populate d, n
-  var top/eax: (addr int) <- get self, top
-  copy-to *top, 0
-}
-
-fn clear-float-stack _self: (addr float-stack) {
-  var self/esi: (addr float-stack) <- copy _self
-  var top/eax: (addr int) <- get self, top
-  copy-to *top, 0
-}
-
-fn push-float-stack _self: (addr float-stack), _val: float {
-  var self/esi: (addr float-stack) <- copy _self
-  var top-addr/ecx: (addr int) <- get self, top
-  var data-ah/edx: (addr handle array float) <- get self, data
-  var data/eax: (addr array float) <- lookup *data-ah
-  var top/edx: int <- copy *top-addr
-  var dest-addr/edx: (addr float) <- index data, top
-  var val/xmm0: float <- copy _val
-  copy-to *dest-addr, val
-  add-to *top-addr, 1
-}
-
-fn pop-float-stack _self: (addr float-stack) -> _/xmm0: float {
-  var self/esi: (addr float-stack) <- copy _self
-  var top-addr/ecx: (addr int) <- get self, top
-  {
-    compare *top-addr, 0
-    break-if->
-    var zero: float
-    return zero
-  }
-  subtract-from *top-addr, 1
-  var data-ah/edx: (addr handle array float) <- get self, data
-  var data/eax: (addr array float) <- lookup *data-ah
-  var top/edx: int <- copy *top-addr
-  var result-addr/eax: (addr float) <- index data, top
-  return *result-addr
-}
-
-fn float-stack-empty? _self: (addr float-stack) -> _/eax: boolean {
-  var self/esi: (addr float-stack) <- copy _self
-  var top-addr/eax: (addr int) <- get self, top
-  compare *top-addr, 0
-  {
-    break-if-!=
-    return 1/true
-  }
-  return 0/false
-}
-
-fn float-stack-length _self: (addr float-stack) -> _/eax: int {
-  var self/esi: (addr float-stack) <- copy _self
-  var top-addr/eax: (addr int) <- get self, top
-  return *top-addr
-}