97 lines
3.9 KiB
Plaintext
97 lines
3.9 KiB
Plaintext
Subject: Mes 0.10 released
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I am pleased to announce the release of Mes 0.10, representing 82
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commits over 6 weeks. Mescc now compiles a bootstrappable-modified
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TinyCC into a mes-tcc that in turn can successfully compile a trivial
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C program.
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* About
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Mes[0] aims to create full source bootstrapping for GuixSD[1] as
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part of the bootstrappable builds[2] project.
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It currently consists of a mutual self-hosting [close to Guile-]
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Scheme interpreter prototype in C and a Nyacc-based C compiler in
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[Guile] Scheme. This C prototype will be rewritten in stage0[3]
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M1 assembly (or possibly stage2 slow-LISP, or ...).
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The Scheme interpreter prototype (mes.c) has a Garbage Collector,
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a library of loadable Scheme modules-- notably Dominique Boucher's
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LALR[4], Pre-R6RS portable syntax-case[5] with R7RS ellipsis, Matt
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Wette's Nyacc[6], Guile's PEG[7] --and test suite just barely
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enough to support a simple REPL (repl.mes) and simple C-compiler
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(mescc.mes).
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The simple C compiler can compile a modified TinyCC[8] that is
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starting to work! A gcc-compiled tcc is known[9] to compile GCC.
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Mes is inspired by The Maxwell Equations of Software: LISP-1.5[10]
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-- John McCarthy page 13, GNU Guix's source/binary packaging
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transparency and Jeremiah Orians's stage0 ~300 byte self-hosting
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hex assembler.
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* Download
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git clone https://gitlab.com/janneke/mes
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wget https://gitlab.com/janneke/mes/repository/archive.tar.gz?ref=v0.10 -O mes-0.10.tar.gz
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Mes runs from the source tree and can also be built, packaged and
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installed in Guix[SD] by the usual
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guix package -f guix.scm
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* Changes in 0.10 since 0.9
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** Core
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*** 2 new functions
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logand, lognot.
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** Mescc
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*** Mes now includes M1 sources for full source bootstrapping up to tcc.
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*** Mescc now depends on Nyacc 0.81.0.
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*** Mescc now compiles a mes-tcc that compiles a trivial C to a running a.out.
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*** Mescc now supports several (as used my tinycc) struct by value assignments.
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*** Mescc now has _start in a separate crt1.c.
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*** Mescc now supports initializer arithmetic.
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*** Mescc now supports arrays of struct of arbitrary size.
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*** Mescc now supports pointer arithmetic.
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*** Mescc now defines __i386__, __linux__.
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*** Mescc now supports --*p, ++*p.
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*** Mescc now supports int foo[bar] = {baz,...}.
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*** Mescc now supports \x00 in strings in M1.
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*** Mescc now supports complex enum expressions. Thanks, rain1!
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*** Mescc now supports short.
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*** Mescc now supports foo.bar = foo.baz = bla.
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*** Mescc now supports foo = bar < baz and comparison permutations.
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*** Mescc now supports (anonymous) structs in unions.
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*** Mescc now writes M1 strings if possible.
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**** 2 improved mlibc functions
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malloc, realloc.
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**** 13 new mlibc functions
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fclose, fgetc, fprintf, fwrite, memcpy, memmove, memset, snprintf, strcat,
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strchr, strrchr, strtoull, vnsprintf.
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**** 15 new tinycc-support tests
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76-pointer-arithmetic.c, 77-pointer-assign.c, 78-union-struct.c,
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79-int-array.c, 7a-struct-char-array.c, 7b-struct-int-array.c,
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7c-dynarray.c, 7d-cast-char.c, 7e-struct-array-access.c,
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7f-struct-pointer-arithmetic.c, 7g-struct-byte-word-field.c,
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7h-struct-assign.c, 7i-struct-struct.c, 7j-strtoull.c,
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7k-for-each-elem.c.
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** Noteworthy bug fixes
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*** Mescc has many fixes for foo.bar[baz], foo[bar].baz with ./-> permutations.
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*** Many bugs and limitations in mescc have been fixed and removed.
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Greetings,
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janneke
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[0] https://gitlab.com/janneke/mes
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[1] https://www.gnu.org/software/guix
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[2] http://bootstrappable.org
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[3] https://github.com/oriansj/stage0
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[4] https://github.com/schemeway/lalr-scm
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[5] https://www.cs.indiana.edu/chezscheme/syntax-case/old-psyntax.html
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[6] https://www.nongnu.org/nyacc/
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[7] https://www.gnu.org/software/guile/docs/master/guile.html/PEG-Parsing.html
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[8] https://gitlab.com/janneke/tinycc
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[9] https://lists.gnu.org/archive/html/tinycc-devel/2017-05/msg00103.html
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[10] http://www.softwarepreservation.org/projects/LISP/book/LISP%201.5%20Programmers%20Manual.pdf
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