File:  [gforth] / gforth / NEWS
Revision 1.24: download - view: text, annotated - select for diffs
Wed Sep 12 18:10:41 2007 UTC (14 years, 1 month ago) by anton
Branches: MAIN
CVS tags: HEAD
Updated NEWS.vmgen (incomplete?) and NEWS

    1: 
    2: 
    3: User-visible changes between 0.6.2 and 0.6.9 (up to 2007-09-12):
    4: 
    5: Installation:
    6:   support for DESTDIR, POST_INSTALL, INSTALL_SCRIPT
    7:   report performance and functionality problems at end of "make"  
    8: Bug fixes
    9:   Now works with address-space randomization.
   10:   The single-step debugger works again in some engines.
   11:   Many others.
   12: Ports:
   13:   AMD64, ARM, IA-64 (Itanium): better performance
   14:   PPC: disassembler and assembler (32-bit)
   15:   Gforth EC: R8C, Lego NXT (complete?)
   16: Invocation:
   17:   New flags --ignore-async-signals, --vm-commit (default overcommit)
   18: Forth 200x:
   19:   extension queries (produce true for all implemented extensions)
   20:   REQUIRED etc. (not new)
   21:   [DEFINED] and [UNDEFINED]
   22:   PARSE-NAME (new name)
   23:   deferred words (new: DEFER@ DEFER! ACTION-OF)
   24:   X:structures: +FIELD FIELD: FFIELD: CFIELD: etc.
   25:   X:ekeys: new: EKEY>FKEY K-SHIFT-MASK K-CTRL-MASK K-ALT-MASK
   26: Unicode support (incomplete, documentation probably not up-to-date):
   27:   added xchars words for dealing with variable-width multi-byte characters
   28:   provide 8bit (ISO Latin 1) and UTF-8 support for xchars
   29: Number prefixes:
   30:   0x is a hex prefix: 0xff and 0XfF now produces (decimal) 255
   31:   # is a decimal prefix: #10 now produces (decimal) 10
   32:   Signs after the number prefix are now accepted, e.g, #-50.
   33:   ' now only handles a single (x)char: 'ab is no longer accepted, 
   34:                                        'a' now produces (decimal) 97
   35: New words:
   36:   \C C-FUNCTION (C interface)
   37:   OUTFILE-EXECUTE INFILE-EXECUTE BASE-EXECUTE (limited change of global state)
   38:   16-bit and 32-bit memory acces: UW@ UL@ SW@ SL@ W! L! W@ L@ /W /L
   39:   NEXT-ARG SHIFT-ARGS (OS command-line argument processing)
   40:   NOTHROW (for backtrace control)
   41:   FTRUNC FMOD (undocumented)
   42:   SEE-CODE SEE-CODE-RANGE (show generated dynamic native code)
   43: Improvements/changes of existing words:
   44:   S\" now supports \l, \m, \z, and limits hex and octal character specs.
   45:   OPEN-FILE with W/O no longer creates or truncates files (compat file missing)
   46:   TRY...ENDTRY changed significantly, compatibility files available (see docs).
   47:   The disassembler (DISCODE) can now use gdb to disassemble code
   48:   Uninitialized defered words now give a warning when executed
   49:   Division is floored (disable with "configure --enable-force-cdiv")
   50:   Gforth (not gforth-fast) reports division by zero and overflow on division
   51:     on all platforms.
   52: Newly documented words:
   53:   S>NUMBER? S>UNUMBER?
   54:   EKEY keypress names: K-LEFT K-RIGHT K-UP K-DOWN K-HOME K-END K-PRIOR
   55:     K-NEXT K-INSERT K-DELETE K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12
   56:     S-K1 S-K2 S-K3 S-K4 S-K5 S-K6 S-K7 S-K8 S-K9 S-K10 S-K11 S-K12
   57:   CLEARSTACKS
   58:   FORM
   59: Environment variable GFORTHSYSTEMPREFIX (used by word SYSTEM and friends)
   60: C interface:
   61:   exported symbols now start with "gforth_" (for referencing them from C code)
   62:   support for use of libffi (supplied with gcc) (undocumented) and
   63:   a C-compiler-based approach (requires C compiler at run-time) (incomplete).
   64: Libraries:
   65:   depth-changes.fs: report stack depth changes during interpretation
   66:   ans-report.fs now reports CfV extensions
   67:   fsl-util.4th: FSL support files (undocumented)
   68:   regexp.fs for regular expressions (undocumented)
   69:   complex.fs for complex numbers (undocumented)
   70:   fft.fs for Fast Fourier Transform (undocumented)
   71:   wf.fs, a Wiki implementation (undocumented)
   72:   httpd.fs, a web server (undocumented)
   73:   status.fs, show interpreter status in separate xterm (undocumented)
   74:   profile.fs for profiling (undocumented, incomplete)
   75:   endtry-iferror.fs, recover-endtry.fs to ease the TRY change transition
   76:   test/tester.fs: Now works with FP numbers (undocumented)
   77:   test/ttester.fs: Version of tester.fs with improved interface (T{...}T).
   78:  compat library:
   79:   compat/execute-parsing.fs
   80: Speed improvements:
   81:   static stack caching (good speedup on PPC)
   82:   mixed-precision division is now faster
   83:   support for int128 types on AMD64
   84:   workarounds for gcc performance bugs (in particular, PR 15242)
   85:   branch target alignment (good speedup on Alpha).
   86: 
   87: 
   88: User-visible changes between 0.6.1 and 0.6.2:
   89: 
   90: Bug fixes (in particular, gforth-0.6.2 compiles with gcc-3.3)
   91: New words: LATEST, LATESTXT (LASTXT deprecated)
   92: Operating environment: Added optional support for a C interface built
   93:   on the ffcall libraries (more portable and powerful than the old
   94:   one, but still not documented).  To use it, the ffcall libraries
   95:   have to be installed before building Gforth (see INSTALL).
   96: Miscellaneous: Gforth-fast now uses static superinstructions (some
   97:   speedup on some platforms); generally this is transparent (apart
   98:   from the speedup), but there are lots of command-line options for
   99:   controlling the static superinstruction generation.
  100: 
  101: 
  102: User-visible changes between 0.6.0 and 0.6.1:
  103: 
  104: Bug fixes (installation on big-endian machines sometimes did not work)
  105: 
  106: 
  107: User-visible changes between 0.5.0 and 0.6.0:
  108: 
  109: Changes in behaviour:
  110: 
  111: S": interpreted use now ALLOCATEs the string (they live until BYE).
  112: Long word names (512MB on 32-bit systems) are now supported (change to
  113:   the header format).
  114: New threaded code execution method: primitive-centric (allows the
  115:   following), hybrid direct/indirect threaded (easier portability),
  116:   with dynamic superinstructions (typical speedup on Athlon: factor
  117:   2).  New engine gforth-itc for dealing with some potential
  118:   backwards-compatibility problems (see "Direct or Indirect Threaded?"
  119:   in the manual).
  120: 
  121: Operating environment:
  122: 
  123: Default dictionary size is now 4MB.
  124: Large file support on OSs that support them (i.e., files with more
  125:   than 2GB on 32-bit machines).
  126: Gforth can now deal well with broken pipes in most situations.
  127: vi tags files can be built with tags.fs (usage like etags.fs).
  128: gforth.el mostly rewritten.
  129: New image file format.
  130: 
  131: New words:
  132: 
  133: Keyboard input: EDIT-LINE K-PRIOR K-NEXT K-DELETE
  134: File input: SLURP-FILE SLURP-FID 
  135: Programming tools: ID. .ID WORDLIST-WORDS SIMPLE-SEE
  136: Conditional execution: [DEFINED] [UNDEFINED]
  137: Defining Words: CONST-DOES> ]]
  138: Input stream: PARSE-WORD EXECUTE-PARSING EXECUTE-PARSING-FILE
  139: String comparison: STR= STR< STRING-PREFIX?
  140: String literals: S\" .\" \"-PARSE
  141: Floating point output: F.RDP F>STR-RDP F>BUF-RDP
  142: 
  143: Miscellaneous:
  144: 
  145: Generalized prims2x.fs into Vmgen (see README.vmgen etc.); used the
  146:   new capabilities in prims (e.g., automatic handling of the return
  147:   stack and instruction stream).
  148: 
  149: 
  150: User-visible changes between 0.4.0 and 0.5.0:
  151: 
  152: Changes in behaviour:
  153: 
  154: There are now two engines: the fast engine (gforth-fast) is at least
  155:   as fast as gforth in earlier releases; the debugging engine (gforth)
  156:   supports precise backtracing for signals (e.g., illegal memory
  157:   access), but is slower by a factor of 1-2.
  158: Block files now start at block 0 by default (instead of block 1).  If
  159:   you have block files around, prepend 1024 bytes to convert them, or
  160:   do a "1 OFFSET !" to establish the old behaviour.
  161: Gforth now does not translate newlines to LFs on reading.  Instead,
  162:   READ-LINE now interprets LF, CR, and CRLF as newlines.  Newlines on
  163:   output are in the OSs favourite format.
  164: SEE now disassembles primitives (or hex-DUMPs the code if no
  165:   disassembler is available).
  166: >HEAD (aka >NAME) now returns 0 (instead of the nt of ???) on failure.
  167: Syntax of prim changed: stack effects are now surrounded by
  168:   parentheses, tabs are insignificant.
  169: 
  170: Operating environment:
  171: 
  172: Gforth now produces a backtrace when catching an exception.
  173: On platforms supporting the Unix 98 SA_SIGINFO semantics, you get more
  174:   precise error reports for SIGSEGV and SIGFPE (e.g., "stack
  175:   underflow" instead of "Invalid memory address").
  176: Gforth now produces exit code 1 if there is an error (i.e., an
  177:   uncaught THROW) in batch processing.
  178: You can use "gforthmi --application ..." to build an image that
  179:   processes the whole command-line when invoked directly (instead of
  180:   through gforth -i).
  181: 
  182: Ports:
  183: 
  184: AIX.
  185: 20% speedup on 604e under powerpc-unknown-linux-gnu,
  186: 19%-29% speedup on Celeron with gcc-2.95.
  187: 
  188: New words:
  189: 
  190: Missing ANS Forth words: EKEY EKEY? EKEY>CHAR
  191: Timing words: CPUTIME UTIME
  192: Vector arithmetic: V* FAXPY
  193: FP comparison: F~ABS F~REL
  194: Deferred words: <IS> [IS]
  195: Nested number output: <<# #>>
  196: Exception handling: TRY RECOVER ENDTRY
  197: Directory handling: OPEN-DIR READ-DIR CLOSE-DIR FILENAME-MATCH
  198: Other: ]L PUSH-ORDER
  199: 
  200: Miscellaneous:
  201: 
  202: Significant extensions to the manual (added an introduction, among
  203:   other things), many of them due to a new team member: Neal Crook.
  204: Added assemblers and disassemblers for 386, Alpha, MIPS (thanks to
  205:   contributions by Andrew McKewan, Bernd Thallner, and Christian
  206:   Pirker).  Contributions of assemblers and disassemblers for other
  207:   architectures are welcome.
  208: 
  209: 
  210: User-visible changes between 0.3.0 and 0.4.0:
  211: 
  212: Operating environment:
  213: 
  214: Path handling: "." at the start of the path represents the directory
  215:   the nearest enclosing file resides in (if there is none: the working
  216:   directory). "~+" indicates the working directory.  The default path
  217:   now has "." in front.
  218: gforth and gforthmi is now more GNU standards compliant (wrt
  219:   command-line options).
  220: New command-line-option: --die-on-signal
  221: Errors are now directed to stderr.
  222: Stdout is now unbuffered, if it is a tty.
  223: User input device redirection (for filters) is now possible.
  224: 
  225: Ports:
  226: 
  227: Now runs on IRIX (and other MIPS-based systems without linker-flag -d).
  228: Direct threading now works on PowerPC (20% speedup on 604e).
  229: Better support for m68k (thanks to Andreas Schwab and Jorge Acereda).
  230: It is possible to create executables that contain the image (for
  231:   non-OS systems).
  232: 
  233: Added a lot of embedded control (EC) stuff. Supported controllers and
  234: small CPUs are Siemens C16x, 8086, 6502, Mixed-Mode's FPGA MISC, Bernd Paysan's
  235: 4stack processor. Not finished: ShBoom alias PSC1000, H8, AVR.
  236: 
  237: New, changed, and removed words:
  238: 
  239: Renamed F0 to FP0 (avoids unexpected behaviour in hex), added aliases
  240:   SP0, RP0, LP0 (recommended for future use) for S0, R0, L0.
  241: Renamed PARSE-WORD into SWORD (PARSE-WORD is used with the meaning of
  242:   NAME in OpenBoot and dpans6 A.6.2.2008)
  243: Added FPICK (suggested by Julian Noble).
  244: Added EXCEPTION.
  245: S" gforth" ENVIRONMENT? now produces the version-string.
  246: Changed representation of types in struct package, and correspondingly
  247:   changed names.
  248: 
  249: Miscellaneous:
  250: 
  251: Plain text documentation is now available in doc/gforth.txt.
  252: Documentation improvements.
  253: Wordlist structure changed.
  254: Added mini-oof.
  255: Reorganized files: added directories and reorganized many files into
  256:   them; renamed files into 8.3 format to work with completely broken
  257:   systems (but there are again some files that won't work there).
  258: Bug fixes.
  259: Various changes without log information only known as mega-patches.
  260: Cross compiler now also supports compilation only for undefined or forward
  261: referenced words. Plugins to support some native code generation
  262: (for PSC1000).
  263: More files in the compat library.
  264: 
  265: 
  266: 
  267: User-visible changes between 0.2.1 and 0.3.0:
  268: 
  269: Stack overflow detection by memory protection on most systems
  270: 	(allocation with mmap).
  271: gforth.fi is now fully relocatable.
  272: fully relocatable images are now easier to create.
  273: added primitives K and UNDER+.
  274: Win32 support.
  275: Improved support for embedded controllers and other deprived environments.
  276: some bug fixes.
  277: added concept index; other documentation improvements.
  278: 
  279: 
  280: 
  281: User-visible changes between 0.2.0 and 0.2.1:
  282: 
  283: Bug fixes
  284: 
  285: 
  286: 
  287: User-visible changes between 0.1beta and 0.2.0:
  288: 
  289: Portability and Installation:
  290: 
  291: Support architectures with buggy long longs (alpha-dec-osf).
  292: Better support for DOS and other non-Unix systems.
  293: Size changes through the command line are passed to the image (and
  294: saved with savesystem); the preamble specifies an interpreter and is
  295: propagated by save-system.
  296: 
  297: Tools:
  298: 
  299: Improved etags support.
  300: more.fs allows output paging.
  301: Added compat/ directory containing ANS implementations of Gforth features.
  302: Added tiny multitasker (tasker.fs).
  303: Added two alternatives for object-oriented programming: oof.fs, objects.fs.
  304: Added ans-report.fs (reports which words are used from which wordset).
  305: 
  306: New words:
  307: 
  308: Changed POPEN and PCLOSE to OPEN-PIPE and CLOSE-PIPE.
  309: Added FORM, ROWS, and COLS.
  310: added primitives EMIT-FILE, STDOUT, STDERR.
  311: Added TABLEs (case-sensitive wordlists).
  312: added POSTPONE,.
  313: Added the ability to combine arbitrary interpretation and compilation
  314: semantics (INTERPRET/COMPILE:); state-smart words were generally
  315: rewritten to use that mechanism.
  316: 
  317: Changes to existing words:
  318: 
  319: EMIT and TYPE now work through file words (and are redirectable).
  320: HEADER now stores the compilation wordlist in the header and REVEAL
  321: reveals into that wordlist.
  322: changed behaviour of SYSTEM (no longer returns wretval, but puts it in
  323: $?)  added (SYSTEM) ( c_addr u -- wretval wior ).
  324: ' and ['] now give an error for compile-only words.
  325: 
  326: -----
  327: Copyright (C) 1995,1996,1997,1998,2000,2003,2006 Free Software Foundation, Inc.
  328: 
  329: This file is part of Gforth.
  330: 
  331: Gforth is free software; you can redistribute it and/or
  332: modify it under the terms of the GNU General Public License
  333: as published by the Free Software Foundation; either version 2
  334: of the License, or (at your option) any later version.
  335: 
  336: This program is distributed in the hope that it will be useful,
  337: but WITHOUT ANY WARRANTY; without even the implied warranty of
  338: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
  339: GNU General Public License for more details.
  340: 
  341: You should have received a copy of the GNU General Public License
  342: along with this program; if not, write to the Free Software
  343: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  344: 
  345: 
  346: % Local Variables:
  347: % fill-prefix: "  "

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