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[epsilon-devel] Mes 0.10 released

From: Jan Nieuwenhuizen
Subject: [epsilon-devel] Mes 0.10 released
Date: Sun, 10 Sep 2017 22:29:22 +0200

I am pleased to announce the release of Mes 0.10, representing 82
commits over 6 weeks.  Mescc now compiles a bootstrappable-modified
TinyCC into a mes-tcc that in turn can successfully compile a trivial
C program.

* About

    Mes[0] aims to create full source bootstrapping for GuixSD[1] as
    part of the bootstrappable builds[2] project.

    It currently consists of a mutual self-hosting [close to Guile-]
    Scheme interpreter prototype in C and a Nyacc-based C compiler in
    [Guile] Scheme.  This C prototype will be rewritten in stage0[3]
    M1 assembly (or possibly stage2 slow-LISP, or ...).

    The Scheme interpreter prototype (mes.c) has a Garbage Collector,
    a library of loadable Scheme modules-- notably Dominique Boucher's
    LALR[4], Pre-R6RS portable syntax-case[5] with R7RS ellipsis, Matt
    Wette's Nyacc[6], Guile's PEG[7] --and test suite just barely
    enough to support a simple REPL (repl.mes) and simple C-compiler

    The simple C compiler can compile a modified TinyCC[8] that is
    starting to work!  A gcc-compiled tcc is known[9] to compile GCC.

    Mes is inspired by The Maxwell Equations of Software: LISP-1.5[10]
    -- John McCarthy page 13, GNU Guix's source/binary packaging
    transparency and Jeremiah Orians's stage0 ~300 byte self-hosting
    hex assembler.

* Download

    git clone https://gitlab.com/janneke/mes

    wget https://gitlab.com/janneke/mes/repository/archive.tar.gz?ref=v0.10 -O 

Mes runs from the source tree and can also be built, packaged and
installed in Guix[SD] by the usual

    guix package -f guix.scm

* Changes in 0.10 since 0.9
 ** Core
 *** 2 new functions
 logand, lognot.
 ** Mescc
 *** Mes now includes M1 sources for full source bootstrapping up to tcc.
 *** Mescc now depends on Nyacc 0.81.0.
 *** Mescc now compiles a mes-tcc that compiles a trivial C to a running a.out.
 *** Mescc now supports several (as used by tinycc) struct by value assignments.
 *** Mescc now has _start in a separate crt1.c.
 *** Mescc now supports initializer arithmetic.
 *** Mescc now supports arrays of struct of arbitrary size.
 *** Mescc now supports pointer arithmetic.
 *** Mescc now defines __i386__, __linux__.
 *** Mescc now supports --*p, ++*p.
 *** Mescc now supports int foo[bar] = {baz,...}.
 *** Mescc now supports \x00 in strings in M1.
 *** Mescc now supports complex enum expressions.  Thanks, rain1!
 *** Mescc now supports short.
 *** Mescc now supports foo.bar = foo.baz = bla.
 *** Mescc now supports foo = bar < baz and comparison permutations.
 *** Mescc now supports (anonymous) structs in unions.
 *** Mescc now writes M1 strings if possible.
 **** 2 improved mlibc functions
 malloc, realloc.
 **** 13 new mlibc functions
 fclose, fgetc, fprintf, fwrite, memcpy, memmove, memset, snprintf, strcat,
 strchr, strrchr, strtoull, vnsprintf.
 **** 15 new tinycc-support tests
 76-pointer-arithmetic.c, 77-pointer-assign.c, 78-union-struct.c,
 79-int-array.c, 7a-struct-char-array.c, 7b-struct-int-array.c,
 7c-dynarray.c, 7d-cast-char.c, 7e-struct-array-access.c,
 7f-struct-pointer-arithmetic.c, 7g-struct-byte-word-field.c,
 7h-struct-assign.c, 7i-struct-struct.c, 7j-strtoull.c,
 ** Noteworthy bug fixes
 *** Mescc has many fixes for foo.bar[baz], foo[bar].baz with ./-> permutations.
 *** Many bugs and limitations in mescc have been fixed and removed.


[0] https://gitlab.com/janneke/mes
[1] https://www.gnu.org/software/guix
[2] http://bootstrappable.org
[3] https://github.com/oriansj/stage0
[4] https://github.com/schemeway/lalr-scm
[5] https://www.cs.indiana.edu/chezscheme/syntax-case/old-psyntax.html
[6] https://www.nongnu.org/nyacc/
[7] https://www.gnu.org/software/guile/docs/master/guile.html/PEG-Parsing.html
[8] https://gitlab.com/janneke/tinycc
[9] https://lists.gnu.org/archive/html/tinycc-devel/2017-05/msg00103.html

Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | AvatarĀ® http://AvatarAcademy.com

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