User-visible changes between 0.5.0 and 0.6.0:
Changes in behaviour:
S": interpreted use now ALLOCATEs the string (they live until BYE).
Long word names (512MB on 32-bit systems) are now supported (change to
the header format).
New threaded code execution method: primitive-centric (allows the
following), hybrid direct/indirect threaded (easier portability),
with dynamic superinstructions (typical speedup on Athlon: factor
2). New engine gforth-itc for dealing with some potential
backwards-compatibility problems (see "Invoking Gforth" in the
Default dictionary size is now 4MB.
Large file support on OSs that support them (i.e., files with more
than 2GB on 32-bit machines).
Gforth can now deal with well with broken pipes in most situations.
vi tags files can be built with tags.fs (usage like etags.fs).
gforth.el mostly rewritten.
New image file format.
Keyboard input: EDIT-LINE K-PRIOR K-NEXT K-DELETE
File input: SLURP-FILE SLURP-FID
Programming tools: ID. .ID WORDLIST-WORDS SIMPLE-SEE
Conditional execution: [DEFINED] [UNDEFINED]
Defining Words: CONST-DOES>
Input stream: PARSE-WORD EXECUTE-PARSING EXECUTE-PARSING-FILE
String comparison: STR= STR< STRING-PREFIX?
String literals: S\" .\" \"-PARSE
Floating point output: F.RDP F>STR-RDP F>BUF-RDP
Generalized prims2x.fs into Vmgen (see README.vmgen etc.); used the
new capabilities in prims (e.g., automatic handling of the return
stack and instruction stream).
User-visible changes between 0.4.0 and 0.5.0:
Changes in behaviour:
There are now two engines: the fast engine (gforth-fast) is at least
as fast as gforth in earlier releases; the debugging engine (gforth)
supports precise backtracing for signals (e.g., illegal memory
access), but is slower by a factor of 1-2.
Block files now start at block 0 by default (instead of block 1). If
you have block files around, prepend 1024 bytes to convert them, or
do a "1 OFFSET !" to establish the old behaviour.
Gforth now does not translate newlines to LFs on reading. Instead,
READ-LINE now interprets LF, CR, and CRLF as newlines. Newlines on
output are in the OSs favourite format.
SEE now disassembles primitives (or hex-DUMPs the code if no
disassembler is available).
>HEAD (aka >NAME) now returns 0 (instead of the nt of ???) on failure.
Syntax of prim changed: stack effects are now surrounded by
parentheses, tabs are insignificant.
Gforth now produces a backtrace when catching an exception.
On platforms supporting the Unix 98 SA_SIGINFO semantics, you get more
precise error reports for SIGSEGV and SIGFPE (e.g., "stack
underflow" instead of "Invalid memory address").
Gforth now produces exit code 1 if there is an error (i.e., an
uncaught THROW) in batch processing.
You can use "gforthmi --application ..." to build an image that
processes the whole command-line when invoked directly (instead of
through gforth -i).
20% speedup on 604e under powerpc-unknown-linux-gnu,
19%-29% speedup on Celeron with gcc-2.95.
Missing ANS Forth words: EKEY EKEY? EKEY>CHAR
Timing words: CPUTIME UTIME
Vector arithmetic: V* FAXPY
FP comparison: F~ABS F~REL
Deferred words: <IS> [IS]
Nested number output: <<# #>>
Exception handling: TRY RECOVER ENDTRY
Directory handling: OPEN-DIR READ-DIR CLOSE-DIR FILENAME-MATCH
Other: ]L PUSH-ORDER
Significant extensions to the manual (added an introduction, among
other things), many of them due to a new team member: Neal Crook.
Added assemblers and disassemblers for 386, Alpha, MIPS (thanks to
contributions by Andrew McKewan, Bernd Thallner, and Christian
Pirker). Contributions of assemblers and disassemblers for other
architectures are welcome.
User-visible changes between 0.3.0 and 0.4.0:
Path handling: "." at the start of the path represents the directory
the nearest enclosing file resides in (if there is none: the working
directory). "~+" indicates the working directory. The default path
now has "." in front.
gforth and gforthmi is now more GNU standards compliant (wrt
New command-line-option: --die-on-signal
Errors are now directed to stderr.
Stdout is now unbuffered, if it is a tty.
User input device redirection (for filters) is now possible.
Now runs on IRIX (and other MIPS-based systems without linker-flag -d).
Direct threading now works on PowerPC (20% speedup on 604e).
Better support for m68k (thanks to Andreas Schwab and Jorge Acereda).
It is possible to create executables that contain the image (for
Added a lot of embedded control (EC) stuff. Supported controllers and
small CPUs are Siemens C16x, 8086, 6502, Mixed-Mode's FPGA MISC, Bernd Paysan's
4stack processor. Not finished: ShBoom alias PSC1000, H8, AVR.
New, changed, and removed words:
Renamed F0 to FP0 (avoids unexpected behaviour in hex), added aliases
SP0, RP0, LP0 (recommended for future use) for S0, R0, L0.
Renamed PARSE-WORD into SWORD (PARSE-WORD is used with the meaning of
NAME in OpenBoot and dpans6 A.6.2.2008)
Added FPICK (suggested by Julian Noble).
S" gforth" ENVIRONMENT? now produces the version-string.
Changed representation of types in struct package, and correspondingly
Plain text documentation is now available in doc/gforth.txt.
Wordlist structure changed.
Reorganized files: added directories and reorganized many files into
them; renamed files into 8.3 format to work with completely broken
systems (but there are again some files that won't work there).
Various changes without log information only known as mega-patches.
Cross compiler now also supports compilation only for undefined or forward
referenced words. Plugins to support some native code generation
More files in the compat library.
User-visible changes between 0.2.1 and 0.3.0:
Stack overflow detection by memory protection on most systems
(allocation with mmap).
gforth.fi is now fully relocatable.
fully relocatable images are now easier to create.
added primitives K and UNDER+.
Improved support for embedded controllers and other deprived environments.
some bug fixes.
added concept index; other documentation improvements.
User-visible changes between 0.2.0 and 0.2.1:
User-visible changes between 0.1beta and 0.2.0:
Portability and Installation:
Support architectures with buggy long longs (alpha-dec-osf).
Better support for DOS and other non-Unix systems.
Size changes through the command line are passed to the image (and
saved with savesystem); the preamble specifies an interpreter and is
propagated by save-system.
Improved etags support.
more.fs allows output paging.
Added compat/ directory containing ANS implementations of Gforth features.
Added tiny multitasker (tasker.fs).
Added two alternatives for object-oriented programming: oof.fs, objects.fs.
Added ans-report.fs (reports which words are used from which wordset).
Changed POPEN and PCLOSE to OPEN-PIPE and CLOSE-PIPE.
Added FORM, ROWS, and COLS.
added primitives EMIT-FILE, STDOUT, STDERR.
Added TABLEs (case-sensitive wordlists).
Added the ability to combine arbitrary interpretation and compilation
semantics (INTERPRET/COMPILE:); state-smart words were generally
rewritten to use that mechanism.
Changes to existing words:
EMIT and TYPE now work through file words (and are redirectable).
HEADER now stores the compilation wordlist in the header and REVEAL
reveals into that wordlist.
changed behaviour of SYSTEM (no longer returns wretval, but puts it in
$?) added (SYSTEM) ( c_addr u -- wretval wior ).
' and ['] now give an error for compile-only words.
Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc.
This file is part of Gforth.
Gforth is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
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