diff options
author | Kartik K. Agaram <vc@akkartik.com> | 2021-03-03 22:09:50 -0800 |
---|---|---|
committer | Kartik K. Agaram <vc@akkartik.com> | 2021-03-03 22:21:03 -0800 |
commit | 71e4f3812982dba2efb471283d310224e8db363e (patch) | |
tree | ea111a1acb8b8845dbda39c0e1b4bac1d198143b /406int32.mu | |
parent | c6b928be29ac8cdb4e4d6e1eaa20420ff03e5a4c (diff) | |
download | mu-71e4f3812982dba2efb471283d310224e8db363e.tar.gz |
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.
Diffstat (limited to '406int32.mu')
-rw-r--r-- | 406int32.mu | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/406int32.mu b/406int32.mu deleted file mode 100644 index d69fe8e2..00000000 --- a/406int32.mu +++ /dev/null @@ -1,39 +0,0 @@ -# Some slow but convenient helpers - -# slow, iterative shift-left instruction -# preconditions: _nr >= 0, _dr > 0 -fn repeated-shift-left nr: int, dr: int -> _/eax: int { - var result/eax: int <- copy nr - { - compare dr, 0 - break-if-<= - result <- shift-left 1 - decrement dr - loop - } - return result -} - -# slow, iterative shift-right instruction -# preconditions: _nr >= 0, _dr > 0 -fn repeated-shift-right nr: int, dr: int -> _/eax: int { - var result/eax: int <- copy nr - { - compare dr, 0 - break-if-<= - result <- shift-right 1 - decrement dr - loop - } - return result -} - -fn abs n: int -> _/eax: int { - var result/eax: int <- copy n - { - compare n, 0 - break-if->= - result <- negate - } - return result -} |