Update of /cvsroot/pure-data/externals/pdp/scaf In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv6756/scaf
Added Files: COPYING Makefile Makefile.config Makefile.config.in README README.scaf TODO configure configure.ac Log Message: checking in pdp 0.12.4 from http://zwizwa.fartit.com/pd/pdp/pdp-0.12.4.tar.gz
--- NEW FILE: configure --- #! /bin/sh # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.59. # # Copyright (C) 2003 Free Software Foundation, Inc. # This configure script is free software; the Free Software Foundation # gives unlimited permission to copy, distribute and modify it. ## --------------------- ## ## M4sh Initialization. ## ## --------------------- ##
# Be Bourne compatible if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then emulate sh NULLCMD=: # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which # is contrary to our usage. Disable this feature. alias -g '${1+"$@"}'='"$@"' elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then [...4085 lines suppressed...] # config.status does its own redirection, appending to config.log. # Unfortunately, on DOS this fails, as config.log is still kept open # by configure, so config.status won't be able to write to it; its # output is simply discarded. So we exec the FD to /dev/null, # effectively closing config.log, so it can be properly (re)opened and # appended to by config.status. When coming back to configure, we # need to make the FD available again. if test "$no_create" != yes; then ac_cs_success=: ac_config_status_args= test "$silent" = yes && ac_config_status_args="$ac_config_status_args --quiet" exec 5>/dev/null $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false exec 5>>config.log # Use ||, not &&, to avoid exiting from the if with $? = 1, which # would make configure fail if this is the last instruction. $ac_cs_success || { (exit 1); exit 1; } fi
--- NEW FILE: Makefile --- include Makefile.config
all: pdp_scaf.pd_linux
pdp_scaf_all: make -C include make -C compiler make -C rules make -C pdp
clean: rm -f *~ rm -f pdp_scaf.pd_linux make -C include clean make -C compiler clean make -C rules clean make -C pdp clean
mrproper: clean rm -rf configure rm -rf config.status rm -rf config.log rm -rf autom4te.cache #this needs to stay in #rm -rf Makefile.config
pdp_scaf.pd_linux: pdp_scaf_all rm -f pdp_scaf.pd_linux gcc -export_dynamic -shared -o pdp_scaf.pd_linux pdp/*.o $(PDP_CA_LIBS)
install: all install -d $(prefix)/lib/scaf install -m 755 compiler/scafc $(prefix)/bin || echo failed install -m 755 compiler/scafc.pl $(prefix)/lib/scaf || echo failed install -m 644 compiler/kernel.scaf $(prefix)/lib/scaf || echo failed install -m 644 compiler/scafmacro.s $(prefix)/lib/scaf || echo failed install -m 644 compiler/optim.rules $(prefix)/lib/scaf || echo failed install -m 755 rules/carules.scafo $(prefix)/lib/scaf/default.scafo || echo failed #Check if pd is installed in $(prefix)/lib/pd. #If this fails the pdp_scaf lib and the docs won't be installed. test -d $(prefix)/lib/pd install -m 755 pdp_scaf.pd_linux $(prefix)/lib/pd/externs install -m 644 doc/*.pd $(prefix)/lib/pd/doc/5.reference
--- NEW FILE: README.scaf --- SCAF - simple cellular automaton forth
scaf is a virtual machine / forth environment for binary arithmic tailored to 2D 1 cell neighbourhood cellular automata.
scaf is a compiled language. programs run inside a "feeder" (sort of operating system if you want)
the feeder is responsable for loading/storing CA cells from/to memory. data in memory is organized as a scanline encoded toroidial bitplane (lsb = left). to simplify the feeder and the stack machine, the top left corner of the rectangular grid of pixels will shift down every processing step. this enables to keep a cell neighbourhood in a couple of registers.
the stack machine has the following architecture: CA stack: (%esi), TOS: %mm0 (32x2 cells. lsb = top left) CA horizon: (%edi) (64x4 cells. (%edi) = top row. lsb = left)
scratch register: %mm1, %mm2 bitmask register: %mm3 = 0xffffffffffffffff
4 bit counter: %mm4-%mm7
the stack size / organization is not known to the stack machine. it can be thought of as operating on a 3x3 cell neightbourhood. the only purpose of the forth program is to determine the CA local update rule.
the machine is supposed to be very minimal. no looping control. no adressing modes. no conditional code. so recursion is not allowed (no way to stop it) there are 9 words to load the cell neigbourhood on the stack. the rest is just logic and stack manips.
the counter can be used for counting neighbourhood cells, like in the game of life. the zero test and sign bit can be used for comparisons. there are kernel words for loading constants into the counter register, and for communication between stack and register.
the horizon is limited to 3x3, however it can be easily extended to 32x3. extending it further than that would require a redesign of the forth + feeder.
HOW TO CREATE NEW CA RULES
edit scaf/modules/carules.scaf or create your own source lib and add the name to the scaf/modules/Makefile. type make in scaf/modules to compile. if you get error messages from the assembler saying things like
Error: no such instruction: `xxx'
or Error: invalid character '_' in mnemonic
this means there are undefined words in your source file. since not all characters are allowed in an asm file, the offending characters are converted to _SOMETHINGELSE_
if you are stuck somewhere, just look at the output of scaf.pl on your .scaf file to determine where the problem is.
words that can be accessed from inside pdp_ca have to start with the prefix rule_ and have to leave a single item on the data stack (the return value) other rules can have all the stack effect you want, but for safety reasons they can't be accessed from within pdp_ca.
FORTH SYSTEM CODE the forth system is made up of the following files:
kernel.scaf: a collection of forth kernel words scafmacro.s: a set of asm macro definitions used in kernel.scaf optim.rules: some substitution rules to eliminate redundant stack manipulations
scaf.pl: the compiler
scaf.pl is run like this:
scaf.pl -Isystemdir source.scaf
if the -I switch is left out, the current directory is searched for the system files. the compiler produces an assembler source that includes scafmacro.s on standard output.
the code it produces is relatively fast. it only uses and/or/xor and shift mmx instructions. it's not optimal use of silicon but it's pretty fast given what's possible. the feeder routine could be improved though.
porting to another platform would require a rewrite of scafmacro.s the rest can be reused. if the target machine has 64 bit registers (or if you can emulate this one using more registers) porting is relatively easy. for larger registers a small change needs to be made to the feeder routine in pdp_ca.c
--- NEW FILE: Makefile.config --- # build flags
# define the include paths here if configure can't find them # PDP_CFLAGS=-I/somehere/pdp/include # PD_CFLAGS=-I/somewhere/pd/src
prefix=/usr/local PDP_CA_INCLUDE = -I/home/tom/pd/packet/include -I/home/tom/pd/packet/scaf/include PDP_CA_LIBS = -ldl -lm DEFAULT_RULES_LIB = /usr/local/lib/scaf/default.scafo PDP_CA_AFLAGS = #--gstabs PDP_CA_CFLAGS = -DPD -O2 -funroll-loops -fomit-frame-pointer -ffast-math \ -Wall -W -Wstrict-prototypes -Werror \ -Wno-unused -Wno-parentheses -Wno-switch -g $(PDP_CFLAGS) $(PD_CFLAGS) \ -DPDP_CA_RULES_LIB="$(DEFAULT_RULES_LIB)" # -Wshadow
# compiler and assembler #CC = gcc-3.2 #CC = gcc #AS = as
# build rules
.c.o: $(CC) $(PDP_CA_CFLAGS) $(PDP_CA_INCLUDE) $(PDP_CA_DEFS) -o $*.o -c $*.c .s.o: $(AS) -o $*.o $*.s $(PDP_CA_AFLAGS)
--- NEW FILE: configure.ac --- AC_INIT(pdp/pdp_ca_system.c) AC_PROG_CC AC_HEADER_STDC
dnl default install prefix is /usr/local if test $prefix == "NONE"; then prefix=/usr/local fi
AC_PATH_PROG(PDP_CONFIG,pdp-config,"no", $PATH)
AC_CHECK_LIB(m,sin) AC_CHECK_LIB(dl,dlopen,, echo libdl not found. sorry... || exit 1)
TOPSRC=`pwd` PARENT=`dirname $TOPSRC`
dnl if pdp-config is found use it to get the cflags if ! test $PDP_CONFIG == "no" then PDP_CPPFLAGS=`$PDP_CONFIG --cflags`
dnl if not, check in the parent dir (in case we are distributed with the pdp package) elif test -f $PARENT/include/pdp.h then PDP_CPPFLAGS="-I$PARENT/include" fi
CPPFLAGS="$CPPFLAGS $PDP_CPPFLAGS" AC_CHECK_HEADER(m_pd.h,,PD_OK=no) AC_CHECK_HEADER(pdp.h,,PDP_OK=no)
if test PD_OK == "no"; then echo "WARNING: m_pd.h not found. Is PD installed? echo "WARNING: You can ignore this warning if you have set the PD_CFLAGS manually in Makefile.config.in fi
if test PDP_OK == "no"; then echo "WARNING: pdp.h not found. Is PDP installed? echo "WARNING: You can ignore this warning if you have set the PDP_CFLAGS manually in Makefile.config.in fi
CPPFLAGS="$CPPFLAGS $PDFLAGS $PDPFLAGS -I$TOPSRC/include"
DEFAULT_RULES_LIB=$prefix/lib/scaf/default.scafo; AC_SUBST(DEFAULT_RULES_LIB)
AC_CONFIG_FILES(Makefile.config) AC_OUTPUT
--- NEW FILE: Makefile.config.in --- # build flags
# define the include paths here if configure can't find them # PDP_CFLAGS=-I/somehere/pdp/include # PD_CFLAGS=-I/somewhere/pd/src
prefix=@prefix@ PDP_CA_INCLUDE = @CPPFLAGS@ PDP_CA_LIBS = @LIBS@ DEFAULT_RULES_LIB = @DEFAULT_RULES_LIB@ PDP_CA_AFLAGS = #--gstabs PDP_CA_CFLAGS = -DPD -O2 -funroll-loops -fomit-frame-pointer -ffast-math \ -Wall -W -Wstrict-prototypes -Werror \ -Wno-unused -Wno-parentheses -Wno-switch -g $(PDP_CFLAGS) $(PD_CFLAGS) \ -DPDP_CA_RULES_LIB="$(DEFAULT_RULES_LIB)" # -Wshadow
# compiler and assembler #CC = gcc-3.2 #CC = gcc #AS = as
# build rules
.c.o: $(CC) $(PDP_CA_CFLAGS) $(PDP_CA_INCLUDE) $(PDP_CA_DEFS) -o $*.o -c $*.c .s.o: $(AS) -o $*.o $*.s $(PDP_CA_AFLAGS)
--- NEW FILE: COPYING ---
GNU GENERAL PUBLIC LICENSE Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc. 675 Mass Ave, Cambridge, MA 02139, USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
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END OF TERMS AND CONDITIONS Appendix: How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
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This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this when it starts in an interactive mode:
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The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989 Ty Coon, President of Vice
This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Library General Public License instead of this License.
--- NEW FILE: README --- PDP_SCAF for pdp v0.7 Cellular Automata modules for PDP
Copyright (c) by Tom Schouten pdp@zzz.kotnet.org
This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
The GNU Public Licence can be found in the file COPYING
------------------------------------------------------------------
This is a pdp extension lib that contains modules for cellular automata built on a (very) minimal forth-like virtual system (scaf - simple cellular automaton forth) to define update rules. a compiler is included to produce scafo object code that can be dynamically loaded into the pdp_ca module. so it is possible to add/change rules without restarting pd (note however you need to close all lib files before the dynamic loader reloads the lib). see scaf/README for details.
pdp_ca2image and pdp_image2ca are included for conversion between CA packets and image packets. (pdp_ca2image produces greyscale images)
Have a look at the patches in test/ for some crude docs. The file README.scaf contains some more info on the internals.
Requirements:
* pd * pdp * linux * perl for the forth compiler * an intel/amd processor that supports MMX
Building:
./configure make make install
If you don't have both libraries in the same dir and want to keep it that way, hardcode the paths in Makefile.config.in and run configure. You need to do "make install" to install the scaf compiler "scafc" and the default ruleset. This is to be able to load plain (text) rule files and have the default rules loaded when you create a pdp_ca object.
Using:
add "-lib <SCAF_DIR>/pdp_scaf" to the pd command line after the "-lib <PDP_DIR>/pdp" part.
launch pd with the options -lib $PDP_DIR/pdp -path $PDP_DIR/abstractions
Directory structure:
include/ header files pdp/ pdp external code compiler/ forth system code test/ some test patches (cryptic doc) rules/ ca rule libraries
Please let me know if you discover a bug or think something doesn't work right. Code, documentation or example patches are more than welcome of course.
Have Fun,
Tom
last modified: 2003/01/12
--- NEW FILE: TODO --- * add decimating to pdp_ca2image * clean up library * add translation option to pdp_ca (modify so horizontal shifts by 1 are possible)