From 71e4f3812982dba2efb471283d310224e8db363e Mon Sep 17 00:00:00 2001
From: "Kartik K. Agaram" <vc@akkartik.com>
Date: Wed, 3 Mar 2021 22:09:50 -0800
Subject: 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.
---
 linux/408float.mu | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 linux/408float.mu

(limited to 'linux/408float.mu')

diff --git a/linux/408float.mu b/linux/408float.mu
new file mode 100644
index 00000000..d1c04836
--- /dev/null
+++ b/linux/408float.mu
@@ -0,0 +1,23 @@
+# Some quick-n-dirty ways to create floats.
+
+fn fill-in-rational _out: (addr float), nr: int, dr: int {
+  var out/edi: (addr float) <- copy _out
+  var result/xmm0: float <- convert nr
+  var divisor/xmm1: float <- convert dr
+  result <- divide divisor
+  copy-to *out, result
+}
+
+fn fill-in-sqrt _out: (addr float), n: int {
+  var out/edi: (addr float) <- copy _out
+  var result/xmm0: float <- convert n
+  result <- square-root result
+  copy-to *out, result
+}
+
+fn rational nr: int, dr: int -> _/xmm0: float {
+  var result/xmm0: float <- convert nr
+  var divisor/xmm1: float <- convert dr
+  result <- divide divisor
+  return result
+}
-- 
cgit 1.4.1-2-gfad0