3: User-visible changes between 0.6.2 and 0.6.9 (up to 2006-05-07):
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.
13: AMD64, ARM, IA-64 (Itanium): better performance
14: PPC: disassembler and assembler (32-bit)
15: Gforth EC: R8C, Lego NXT (complete?)
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: Unicode support (incomplete):
25: added xchars words for dealing with variable-width multi-byte characters
26: provide 8bit (ISO Latin 1) and UTF-8 support for xchars
27: Number prefixes:
28: 0x is a hex prefix: 0xff and 0XfF now produces (decimal) 255
29: # is a decimal prefix: #10 now produces (decimal) 10
30: ' now only handles a single (x)char: 'ab is no longer accepted,
31: 'a' now produces (decimal) 97
32: New words:
33: \C C-FUNCTION (C interface)
34: OUTFILE-EXECUTE INFILE-EXECUTE BASE-EXECUTE (limited change of global state)
35: 16-bit and 32-bit memory acces: UW@ UL@ SW@ SL@ W! L! W@ L@ /W /L
36: NEXT-ARG SHIFT-ARGS (OS command-line argument processing)
37: NOTHROW (for backtrace control)
38: FTRUNC FMOD (undocumented)
39: Improvements/changes of existing words:
40: TRY...ENDTRY changed significantly, compatibility files available (see docs).
41: The disassembler (DISCODE) can now use gdb to disassemble code
42: Uninitialized defered words now give a warning when executed
43: Division is floored (disable with "configure --enable-force-cdiv")
44: Gforth (not gforth-fast) reports division by zero and overflow on division
45: on all platforms.
46: Newly documented words:
47: S>NUMBER? S>UNUMBER?
48: EKEY keypress names: K-LEFT K-RIGHT K-UP K-DOWN K-HOME K-END K-PRIOR
49: K-NEXT K-INSERT K-DELETE K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12
50: S-K1 S-K2 S-K3 S-K4 S-K5 S-K6 S-K7 S-K8 S-K9 S-K10 S-K11 S-K12
53: Environment variable GFORTHSYSTEMPREFIX (used by word SYSTEM and friends)
54: C interface:
55: exported symbols now start with "gforth_" (for referencing them from C code)
56: support for use of libffi (supplied with gcc) and
57: a C-compiler-based approach (requires C compiler at run-time) (incomplete).
59: depth-changes.fs: report stack depth changes during interpretation
60: ans-report.fs now reports CfV extensions
61: fsl-util.4th: FSL support files (undocumented)
62: regexp.fs for regular expressions (undocumented)
63: complex.fs for complex numbers (undocumented)
64: fft.fs for Fast Fourier Transform (undocumented)
65: wf.fs, a Wiki implementation (undocumented)
66: httpd.fs, a web server (undocumented)
67: status.fs, show interpreter status in separate xterm (undocumented)
68: profile.fs for profiling (undocumented, incomplete)
69: endtry-iferror.fs, recover-endtry.fs to ease the TRY change transition
70: compat library:
72: Speed improvements:
73: static stack caching (good speedup on PPC)
74: mixed-precision division is now faster
75: support for int128 types on AMD64
76: workarounds for gcc performance bugs (in particular, PR 15242)
79: User-visible changes between 0.6.1 and 0.6.2:
81: Bug fixes (in particular, gforth-0.6.2 compiles with gcc-3.3)
82: New words: LATEST, LATESTXT (LASTXT deprecated)
83: Operating environment: Added optional support for a C interface built
84: on the ffcall libraries (more portable and powerful than the old
85: one, but still not documented). To use it, the ffcall libraries
86: have to be installed before building Gforth (see INSTALL).
87: Miscellaneous: Gforth-fast now uses static superinstructions (some
88: speedup on some platforms); generally this is transparent (apart
89: from the speedup), but there are lots of command-line options for
90: controlling the static superinstruction generation.
93: User-visible changes between 0.6.0 and 0.6.1:
95: Bug fixes (installation on big-endian machines sometimes did not work)
98: User-visible changes between 0.5.0 and 0.6.0:
100: Changes in behaviour:
102: S": interpreted use now ALLOCATEs the string (they live until BYE).
103: Long word names (512MB on 32-bit systems) are now supported (change to
104: the header format).
105: New threaded code execution method: primitive-centric (allows the
106: following), hybrid direct/indirect threaded (easier portability),
107: with dynamic superinstructions (typical speedup on Athlon: factor
108: 2). New engine gforth-itc for dealing with some potential
109: backwards-compatibility problems (see "Direct or Indirect Threaded?"
110: in the manual).
112: Operating environment:
114: Default dictionary size is now 4MB.
115: Large file support on OSs that support them (i.e., files with more
116: than 2GB on 32-bit machines).
117: Gforth can now deal well with broken pipes in most situations.
118: vi tags files can be built with tags.fs (usage like etags.fs).
119: gforth.el mostly rewritten.
120: New image file format.
122: New words:
124: Keyboard input: EDIT-LINE K-PRIOR K-NEXT K-DELETE
125: File input: SLURP-FILE SLURP-FID
126: Programming tools: ID. .ID WORDLIST-WORDS SIMPLE-SEE
127: Conditional execution: [DEFINED] [UNDEFINED]
128: Defining Words: CONST-DOES> ]]
129: Input stream: PARSE-WORD EXECUTE-PARSING EXECUTE-PARSING-FILE
130: String comparison: STR= STR< STRING-PREFIX?
131: String literals: S\" .\" \"-PARSE
132: Floating point output: F.RDP F>STR-RDP F>BUF-RDP
136: Generalized prims2x.fs into Vmgen (see README.vmgen etc.); used the
137: new capabilities in prims (e.g., automatic handling of the return
138: stack and instruction stream).
141: User-visible changes between 0.4.0 and 0.5.0:
143: Changes in behaviour:
145: There are now two engines: the fast engine (gforth-fast) is at least
146: as fast as gforth in earlier releases; the debugging engine (gforth)
147: supports precise backtracing for signals (e.g., illegal memory
148: access), but is slower by a factor of 1-2.
149: Block files now start at block 0 by default (instead of block 1). If
150: you have block files around, prepend 1024 bytes to convert them, or
151: do a "1 OFFSET !" to establish the old behaviour.
152: Gforth now does not translate newlines to LFs on reading. Instead,
153: READ-LINE now interprets LF, CR, and CRLF as newlines. Newlines on
154: output are in the OSs favourite format.
155: SEE now disassembles primitives (or hex-DUMPs the code if no
156: disassembler is available).
157: >HEAD (aka >NAME) now returns 0 (instead of the nt of ???) on failure.
158: Syntax of prim changed: stack effects are now surrounded by
159: parentheses, tabs are insignificant.
161: Operating environment:
163: Gforth now produces a backtrace when catching an exception.
164: On platforms supporting the Unix 98 SA_SIGINFO semantics, you get more
165: precise error reports for SIGSEGV and SIGFPE (e.g., "stack
166: underflow" instead of "Invalid memory address").
167: Gforth now produces exit code 1 if there is an error (i.e., an
168: uncaught THROW) in batch processing.
169: You can use "gforthmi --application ..." to build an image that
170: processes the whole command-line when invoked directly (instead of
171: through gforth -i).
176: 20% speedup on 604e under powerpc-unknown-linux-gnu,
177: 19%-29% speedup on Celeron with gcc-2.95.
179: New words:
181: Missing ANS Forth words: EKEY EKEY? EKEY>CHAR
182: Timing words: CPUTIME UTIME
183: Vector arithmetic: V* FAXPY
184: FP comparison: F~ABS F~REL
185: Deferred words: <IS> [IS]
186: Nested number output: <<# #>>
187: Exception handling: TRY RECOVER ENDTRY
188: Directory handling: OPEN-DIR READ-DIR CLOSE-DIR FILENAME-MATCH
189: Other: ]L PUSH-ORDER
193: Significant extensions to the manual (added an introduction, among
194: other things), many of them due to a new team member: Neal Crook.
195: Added assemblers and disassemblers for 386, Alpha, MIPS (thanks to
196: contributions by Andrew McKewan, Bernd Thallner, and Christian
197: Pirker). Contributions of assemblers and disassemblers for other
198: architectures are welcome.
201: User-visible changes between 0.3.0 and 0.4.0:
203: Operating environment:
205: Path handling: "." at the start of the path represents the directory
206: the nearest enclosing file resides in (if there is none: the working
207: directory). "~+" indicates the working directory. The default path
208: now has "." in front.
209: gforth and gforthmi is now more GNU standards compliant (wrt
210: command-line options).
211: New command-line-option: --die-on-signal
212: Errors are now directed to stderr.
213: Stdout is now unbuffered, if it is a tty.
214: User input device redirection (for filters) is now possible.
218: Now runs on IRIX (and other MIPS-based systems without linker-flag -d).
219: Direct threading now works on PowerPC (20% speedup on 604e).
220: Better support for m68k (thanks to Andreas Schwab and Jorge Acereda).
221: It is possible to create executables that contain the image (for
222: non-OS systems).
224: Added a lot of embedded control (EC) stuff. Supported controllers and
225: small CPUs are Siemens C16x, 8086, 6502, Mixed-Mode's FPGA MISC, Bernd Paysan's
226: 4stack processor. Not finished: ShBoom alias PSC1000, H8, AVR.
228: New, changed, and removed words:
230: Renamed F0 to FP0 (avoids unexpected behaviour in hex), added aliases
231: SP0, RP0, LP0 (recommended for future use) for S0, R0, L0.
232: Renamed PARSE-WORD into SWORD (PARSE-WORD is used with the meaning of
233: NAME in OpenBoot and dpans6 A.6.2.2008)
234: Added FPICK (suggested by Julian Noble).
235: Added EXCEPTION.
236: S" gforth" ENVIRONMENT? now produces the version-string.
237: Changed representation of types in struct package, and correspondingly
238: changed names.
242: Plain text documentation is now available in doc/gforth.txt.
243: Documentation improvements.
244: Wordlist structure changed.
245: Added mini-oof.
246: Reorganized files: added directories and reorganized many files into
247: them; renamed files into 8.3 format to work with completely broken
248: systems (but there are again some files that won't work there).
249: Bug fixes.
250: Various changes without log information only known as mega-patches.
251: Cross compiler now also supports compilation only for undefined or forward
252: referenced words. Plugins to support some native code generation
253: (for PSC1000).
254: More files in the compat library.
258: User-visible changes between 0.2.1 and 0.3.0:
260: Stack overflow detection by memory protection on most systems
261: (allocation with mmap).
262: gforth.fi is now fully relocatable.
263: fully relocatable images are now easier to create.
264: added primitives K and UNDER+.
265: Win32 support.
266: Improved support for embedded controllers and other deprived environments.
267: some bug fixes.
268: added concept index; other documentation improvements.
272: User-visible changes between 0.2.0 and 0.2.1:
274: Bug fixes
278: User-visible changes between 0.1beta and 0.2.0:
280: Portability and Installation:
282: Support architectures with buggy long longs (alpha-dec-osf).
283: Better support for DOS and other non-Unix systems.
284: Size changes through the command line are passed to the image (and
285: saved with savesystem); the preamble specifies an interpreter and is
286: propagated by save-system.
290: Improved etags support.
291: more.fs allows output paging.
292: Added compat/ directory containing ANS implementations of Gforth features.
293: Added tiny multitasker (tasker.fs).
294: Added two alternatives for object-oriented programming: oof.fs, objects.fs.
295: Added ans-report.fs (reports which words are used from which wordset).
297: New words:
299: Changed POPEN and PCLOSE to OPEN-PIPE and CLOSE-PIPE.
300: Added FORM, ROWS, and COLS.
301: added primitives EMIT-FILE, STDOUT, STDERR.
302: Added TABLEs (case-sensitive wordlists).
303: added POSTPONE,.
304: Added the ability to combine arbitrary interpretation and compilation
305: semantics (INTERPRET/COMPILE:); state-smart words were generally
306: rewritten to use that mechanism.
308: Changes to existing words:
310: EMIT and TYPE now work through file words (and are redirectable).
311: HEADER now stores the compilation wordlist in the header and REVEAL
312: reveals into that wordlist.
313: changed behaviour of SYSTEM (no longer returns wretval, but puts it in
314: $?) added (SYSTEM) ( c_addr u -- wretval wior ).
315: ' and ['] now give an error for compile-only words.
318: Copyright (C) 1995,1996,1997,1998,2000,2003,2006 Free Software Foundation, Inc.
320: This file is part of Gforth.
322: Gforth is free software; you can redistribute it and/or
323: modify it under the terms of the GNU General Public License
324: as published by the Free Software Foundation; either version 2
325: of the License, or (at your option) any later version.
327: This program is distributed in the hope that it will be useful,
328: but WITHOUT ANY WARRANTY; without even the implied warranty of
329: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
330: GNU General Public License for more details.
332: You should have received a copy of the GNU General Public License
333: along with this program; if not, write to the Free Software
334: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
337: % Local Variables:
338: % fill-prefix: " "