|
|
What is SDCC?
SDCC is a retargettable, optimizing ANSI - C compiler that
targets the Intel 8051, Maxim 80DS390, Zilog Z80
and the Motorola 68HC08 based MCUs.
Work is in progress on supporting the Microchip
PIC16 and PIC18 series. SDCC is Free Open Source Software, distributed under GNU General Public License (GPL).
Some of the features include:
- SDCC ASXXXX and ASLINK, a retargettable assembler and linker, is Free Open Source Software,
distributed under GNU General Public License (GPL).
- extensive MCU specific language extensions,
allowing effective use of the underlying hardware.
- a host of standard optimizations such as global
sub expression
elimination, loop optimizations (loop invariant, strength reduction of
induction
variables and loop reversing ), constant folding and
propagation,
copy propagation, dead code elimination and jump tables for 'switch'
statements.
- MCU specific optimizations, including a global
register allocator.
- adaptable MCU specific backend that should be well
suited for other 8
bit MCUs
- independent rule based peep hole optimizer.
- a full range of data types:
char (8 bits, 1 byte), short (16
bits, 2
bytes), int (16 bits, 2 bytes), long
(32 bit, 4
bytes)
and
float (4 byte IEEE).
- the ability to add inline assembler code anywhere in
a function.
- the ability to report on the complexity of a function
to help decide what
should be re-written in assembler.
- a good selection of automated regression tests.
SDCC
also comes with the source level debugger
SDCDB, using the current version of Daniel's s51 simulator.
SDCC was written by Sandeep Dutta
and released under a GPL
license. Since its
initial release there have been numerous bug fixes and improvements. As
of
December 1999, the code was moved to SourceForge where all the "users
turned
developers" can access the same source tree. SDCC is constantly being
updated
with all the users' and developers' input.
AVR
and gbz80
targets are no longer maintained.
News
March 22th, 2009: Small Device C Compiler 2.9.0 released.
A new release of SDCC, the portable optimizing compiler for 8051, DS390, Z80,
HC08, and PIC microprocessors is now available (http://sdcc.sourceforge.net).
Sources, documentation and binaries compiled for x86 Linux, x86 MS Windows and
universal Mac OS X are available.
SDCC 2.9.0 Feature List:
- sdcpp synchronized with GNU cpp 4.3.3
- Integer constants written in binary (prefix 0b or 0B, followed by a sequence
of 0 and 1digits) are now supported as a SDCC extension.
- pic16 *printf() library functions return int
- disabled support of undocumented and not standard compliant 'b' binary
format specifier ("%b", "%hb" and "%lb") in pic16 *printf() and printf_tiny()
library functions
- fixed initialization of unnamed bitfields members of objects of structure and
union type
- many optimizations to reduce code size and increase speed in the Z80 backend
- added support for ar format libraries to adcc asxxxx
- libraries, included in sdcc packages, are in ar format
- sdcc asxxxx license changed to GPLv3
- added support for many PIC16 devices
Numerous feature requests and bug fixes are included as well.
You can download the release from:
http://sourceforge.net/project/showfiles.php?group_id=599
What Platforms are Supported?
Linux - x86, Microsoft Windows - x86 and Mac OS X
are the primary, so called "officially supported" platforms.
SDCC compiles natively on Linux and Mac OS X
using gcc. Windows release and snapshot builds are made by cross compiling to mingw32 on a Linux host.
Windows 9x/NT/2000/XP users are
recommended to use Cygwin (http://sources.redhat.com/cygwin/)
or may try the unsupported Microsoft Visual C++ build scripts.
Downloading SDCC
See the Sourceforge
download page for the last released version including source
and binary packages for Linux - x86,
Microsoft Windows - x86 and Mac OS X.
SDCC is known to compile from the source code also on Linux - x86_64,
Linux - Alpha,
Linux - IBM Power5,
and SUN Solaris - Sparc.
SDCC is always under active development. Please consider
downloading one of the snapshot builds
if you have
run across a bug, or if the above release is more than two months old.
Debian packages (many thanks to Aurelien Jarno <aurel32.AT.debian.org>):
RPM packages (thanks to Mandrake, Conectiva and PLD
Linux
distributions):
The latest development source code can be accessed using
Subversion. The following will fetch the latest sources:
svn co https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc sdcc
... will create the sdcc directory in your current directory and place all
downloaded code there. You can browse the Subversion repository
here.
SourceForge has further documentation on accessing the Subversion repository
here.
Before reporting a bug, please check your SDCC version
and build
date using the -v option, and be sure to include the full version
string in
your bug report. For example:
sdcc/bin > sdcc -v
SDCC : mcs51/gbz80/z80/avr/ds390/pic14/TININative/xa51 2.3.8 (Feb 10
2004) (UNIX)
Support for SDCC
SDCC and the included support
packages come with fair amounts of documentation
and examples. When they aren't enough, you can find help in the
places listed below. Here is a short check list of tips to greatly
improve your
chances of obtaining a helpful response.
- Attach the code you are compiling with SDCC. It
should compile "out of the box". Snippets must compile and must include
any required header files, etc.
Incomplete information will hamper your chance of a timely response.
- Specify the exact command you use to run SDCC, or
attach your Makefile.
- Specify the SDCC version (type "sdcc -v"), your
platform and operating system.
- Provide an exact copy of any error message or
incorrect output.
Please attempt to include these 4 important
parts,
as applicable, in all requests
for support or when reporting any problems or bugs with SDCC. Though
this will make your
message lengthy, it will greatly improve your chance that SDCC users
and developers will
be able to help you. Some SDCC developers are frustrated by bug reports
without code
provided that they can use to reproduce and ultimately fix the problem,
so please be
sure to provide sample code if you are reporting a bug!
- Web
Page - you are (X) here.
- Mailing list: [use "BUG REPORTING" below if you
believe you have found a
bug.]
- Send to the developer list
<sdcc-devel.AT.lists.sourceforge.net>
- for development work on SDCC
- Send to the user list
<sdcc-user.AT.lists.sourceforge.net>
- [preferred] all developers and all users.
- Subscribe
to the user list
- Bug
Reporting - if you have a problem using SDCC, we need to
hear about it. Please attach code to reproduce the problem,
and be sure to provide your email address so a developer can contact
you if they need more information to investigate and fix the bug.
- Website/Documentation
Issues - Please report erroneous,
missing or outdated information
- SDCC
Message Forum - an account on Sourceforge is needed if you're
going to post and reply. Short
easy online fill-in the blanks.
- Open
Knowledge Web Site - Run by Thorsten Godau <thorsten.godau.AT.gmx.de>
Who is SDCC?
- Sandeep Dutta
<sandeep.AT.users.sourceforge.net>
- original author (SDCC's version of Torvalds)
- Jean Loius-VERN
<jlvern.AT.writeme.com>
- substantial improvement in the back-end code generation.
- Daniel Drotos
<drdani.AT.mazsola.iit.uni-miskolc.hu>
- Freeware simulator for 8051.
- Kevin Vigor
<kevin.AT.vigor.nu>
- numerous enhancements and bug fixes to the Dallas ds390 tree.
- Johan Knol
<johan.knol.AT.users.sourceforge.net>
- testing and patching ds390 tree, bug stompper extrodanaire
- Scott Dattalo
<scott.AT.dattalo.com>
- sdcc for Microchip PIC controller target
- Karl Bongers
<karl.AT.turbobit.com>
- mcs51 support, winbin builds, and an occasional bug.
- Bernhard Held
<bernhard.AT.bernhardheld.de>
- snpshot builds and general housekeeping
- Frieder Ferlemann
<Frieder.Ferlemann.AT.web.de>
- contributions to the documentation and last stages of code generation
- Jesus Calvino-Fraga
<jesusc.AT.ece.ubc.ca>
- math functions, AOMF51, linker improvements
- Borut Ražem
<borut.razem.AT.siol.net>
- WIN32 MSC, cygwin and mingw ports, NSIS installer, preprocessor and front end
improvements, bug fixing, snapshot builds on Distibuted Compile Farm, ...
- Vangelis Rokas
<vrokas.AT.otenet.gr>
- PIC16 taget development for Microchip PIC18F microcontrollers
- Erik Petrich
<epetrich.AT.users.sourceforge.net>
- Bug fixes and improvements for the front end, 8051, z80 and hc08
- Dave Helton
<dave.AT.kd0yu.com>
- website design
- Paul Stoffregen
<paul.AT.pjrc.com>
- mcs51 optimizations and website maintenance.
- Michael Hope
<michaelh.AT.juju.net.nz>
- initial Z80 target, additional coding and bug fixes.
- Maarten Brock
<sourceforge.brock.AT.dse.nl>
- several bug fixes and improvements, esp. for mcs51 target
- Raphael Neider
<RNeider.AT.web.de>
- bug fixes and optimizations for PIC16, completion of the PIC14 target
- Philipp Klaus
Krause <pkk AT spth.de>
- z80 and gbz80 bug fixes and optimizations
SDCC has had help from a number of external sources, including:
- Alan Baldwin
<baldwin.AT.shop-pdp.kent.edu>
- Initial version of ASXXXX and ASLINK.
- John Hartman
<noice.AT.noicedebugger.com>
- Porting ASXXXX and ASLINK for 8051.
- Jans J Boehm
<boehm.AT.sgi.com> and Alan J Demers - Conservative garbage collector for C & C++.
- Dmitry S. Obukhov
<dso.AT.usa.net>
- malloc and serial I/O routines.
- The GCC development team - for the GNU C preprocessor
- Malini Dutta
<malini.AT.mediaone.net>
- Sandeep's wife, for her patience and support.
Past news
March 15th, 2009: SDCC 2.9.0 RC2 released.
SDCC 2.9.0 Release Candidate 2 source, doc and binary packages for x86 Linux,
32 bit Windows and universal Mac OS X are available at:
http://sdcc.sourceforge.net/snap.php.
March 1st, 2009: SDCC 2.9.0 RC1 released.
SDCC 2.9.0 Release Candidate 1 source, doc and binary packages for x86 Linux,
32 bit Windows and universal Mac OS X are available at:
http://sdcc.sourceforge.net/snap.php.
Previous News
This site is hosted by  |
 |
Webmaster |
Last updated:
May 10, 2009 08:42:00. |
|