mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

	Commit message (Collapse)	Author	Age	Files	Lines
*	7842 - new directory organization	Kartik K. Agaram	2021-03-03	1	-0/+68
	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.

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 }