102 lines
4.3 KiB
Plaintext
102 lines
4.3 KiB
Plaintext
Subject: Mes 0.14 released
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I am pleased to announce the release of Mes 0.14, representing 98
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commits over 4 weeks. Mes+MesCC now compiles a self-hosting TinyCC
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that has only been slightly patched.
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This means that we can now build a tcc that depends only on a 1MB
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ASCII M1 seed. GuixSD currently uses a ~250MB binary seed to build
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gcc.
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Next targets are: build gcc using this almost full-source bootstrapped
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tcc, and reduce the 1MB ASCII M1 seed to ~100KB of M2 source, which is
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a restricted subset of C.
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Packages are available from Guix's wip-bootstrap branch.
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* About
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Mes[0] aims to help create full source bootstrapping for GuixSD[1]
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as part of the bootstrappable builds[2] project.
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It currently consists of a mutual self-hosting Scheme interpreter
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prototype in C and a Nyacc-based C compiler in Scheme. This C
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prototype is being simplified to be transpiled by M2-Planet[3].
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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.
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Mes+MesCC can compile an only slightly patched TinyCC[8] that is
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self-hosting. A GNU 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[11] ~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/-/archive/v0.14/mes-0.14.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 0.14 since 0.13
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** Core
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*** Bootstrapped Mes+MesCC now compiles a tcc that is self-hosting and only slightly patched.
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*** The reader now supports binary numbers (previously: read as decimal).
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*** String port support has been moved to C.
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*** The build has been simplified, the Make-in-Scheme experiment has been removed.
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*** 2 new functions
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chmod, logxor.
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** Language
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*** Mes now supports define-immutable-record-type and single set-field from srfi-9 gnu.
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*** 12 new functions
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basename, chmod, const, delete-duplicates, logxor, string-contains,
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string-map, string-replace, string-trim, string-trim-both,
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string-trim-right, unfold.
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** MesCC
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*** MesCC now supports standalone usage of nestedly defined enums, structs and unions.
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*** MesCC now supports comparison of unsigned and promotion of signed/unsigned -> unsigned.
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*** MesCC now supports sign extension for char, short.
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*** MesCC now has stubbing for floats; compiling works, data is fu.
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*** MesCC now has full suport for switch case, e.g. with default as first clause.
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*** MesCC now supports destruction of casted expressions: ((struct foo*)p)->bar.
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*** MesCC now has full support for pre/post, e.g.: (foo--)->bar and permutations.
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*** MesCC now supports sizeof any expression or type.
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*** MesCC now supports initialization of anonymous unions.
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*** MesCC now supports bit fields.
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*** MesCC now supports valued functions in expressions: destruction and dereferencing.
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*** MesCC now supports function-static variables.
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*** MesCC now supports initializer lists in structs and unions.
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*** MesCC now has full support for heterogeneous variable declarations, e.g.: char p, *x = "foo", buf[3];
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**** 4 new functions
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__lshrdi3, __ashldi3, __ashrdi3, strncpy.
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**** 9 new mlibc stubs
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__fixdfdi, __fixsfdi, __fixunsxfdi, __fixxfdi, __floatundixf, ldexp,
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strtod, strtof, strtold.
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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/m2-planet
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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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[11] https://github.com/oriansj/stage0
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