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, 55 deletions

diff --git a/312copy.subx b/312copy.subx
index 11bfbc3e..d2a6f661 100644
--- a/312copy.subx
+++ b/312copy.subx
@@ -11,58 +11,3 @@ $copy-array-object:end:
     89/<- %esp 5/r32/ebp
     5d/pop-to-ebp
     c3/return
-
-# create an independent copy of file src into dest
-# there's no way to do this without knowing the filename
-copy-file:  # src: (addr buffered-file), dest-ah: (addr handle buffered-file), filename: (addr array byte)
-    # . prologue
-    55/push-ebp
-    89/<- %ebp 4/r32/esp
-    # . save registers
-    50/push-eax
-    51/push-ecx
-    52/push-edx
-    53/push-ebx
-    56/push-esi
-    57/push-edi
-    # esi = src
-    8b/-> *(ebp+8) 6/r32/esi
-    # var n/ecx: int = src->buffer->size + 16
-    8b/-> *(esi+0xc) 0/r32/eax
-    05/add-to-eax 0x10/imm32  # buffered-file fields before buffer contents
-    89/<- %ecx 0/r32/eax
-    #
-    (allocate Heap %ecx *(ebp+0xc))
-    # var dest/edi: (addr buffered-file) = lookup(*dest-ah)
-    8b/-> *(ebp+0xc) 0/r32/eax
-    (lookup *eax *(eax+4))  # => eax
-    89/<- %edi 0/r32/eax
-    #
-    (copy-bytes %esi %edi %ecx)
-    # var offset/ecx: int = lseek(src->fd, 0, SEEK_CUR)
-    8b/-> *esi 3/r32/ebx
-    b9/copy-to-ecx 0/imm32/offset
-    ba/copy-to-edx 1/imm32/whence:SEEK_CUR
-    (syscall_lseek)
-    89/<- %ecx 0/r32/eax
-    # at this point dest is identical to src, including file descriptor. Now
-    # create an independent copy of the file descriptor
-    (open-fd *(ebp+0x10) 0)  # false => eax
-    89/<- *edi 0/r32/eax
-    # replicate offset in the new fd
-    89/<- %ebx 0/r32/eax  # fd
-    51/push-ecx  # offset
-    ba/copy-to-edx 0/imm32/whence:SEEK_SET
-    (syscall_lseek)
-$copy-file:end:
-    # . restore registers
-    5f/pop-to-edi
-    5e/pop-to-esi
-    5b/pop-to-ebx
-    5a/pop-to-edx
-    59/pop-to-ecx
-    58/pop-to-eax
-    # . epilogue
-    89/<- %esp 5/r32/ebp
-    5d/pop-to-ebp
-    c3/return