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Added configure variable STACK_CACHE_REGS and set useful defaults
  currently supported: 0-4 regs, default reg 0-4.

    1: \ stack cache setup: default state S1
    2: 
    3: \ Copyright (C) 2003,2004,2005,2006,2007 Free Software Foundation, Inc.
    4: 
    5: \ This file is part of Gforth.
    6: 
    7: \ Gforth is free software; you can redistribute it and/or
    8: \ modify it under the terms of the GNU General Public License
    9: \ as published by the Free Software Foundation, either version 3
   10: \ of the License, or (at your option) any later version.
   11: 
   12: \ This program is distributed in the hope that it will be useful,
   13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
   14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   15: \ GNU General Public License for more details.
   16: 
   17: \ You should have received a copy of the GNU General Public License
   18: \ along with this program. If not, see http://www.gnu.org/licenses/.
   19: 
   20: \E register IPTOS Cell
   21: \E register spTOS Cell
   22: \E register spb Cell
   23: \E register spc Cell
   24: \E register spd Cell
   25: \E register spe Cell
   26: \E register spf Cell
   27: \E register spg Cell
   28: \E register sph Cell
   29: 
   30: \E register fpTOS Float
   31: 
   32: \E create IPregs IPTOS ,
   33: \E create regs sph , spg , spf , spe , spd , spc , spb , spTOS ,
   34: \ \E create regs spTOS ,
   35: \E create fpregs fpTOS ,
   36: 
   37: \E IPregs 1 0 stack-state IPss1
   38: \E regs 8 th 0  -1 stack-state ss0
   39: \E regs 7 th 1  0 stack-state ss1
   40: \E regs 6 th 2  1 stack-state ss2
   41: \E regs 5 th 3  2 stack-state ss3
   42: \E regs 4 th 4  3 stack-state ss4
   43: \E regs 3 th 5  4 stack-state ss5
   44: \E regs 2 th 6  5 stack-state ss6
   45: \E regs 1 th 7  6 stack-state ss7
   46: \E regs 0 th 8  7 stack-state ss8
   47: \ \E regs 1 th 0 -1 stack-state ss0
   48: \ \E regs           1  0 stack-state ss1
   49: \E fpregs 0 th 1 0 stack-state fpss1
   50: 
   51: \ the first of these is the default state (for now)
   52: \E state S1
   53: \E state S0
   54: \E state S2
   55: \E state S3
   56: \E state S4
   57: \E state S5
   58: \E state S6
   59: \E state S7
   60: \E state S8
   61: 
   62: include(STACK_CACHE_REGS)
   63: 
   64: \E ss0 data-stack S0 set-ss
   65: \E ss1 data-stack S1 set-ss
   66: \E ss2 data-stack S2 set-ss
   67: \E ss3 data-stack S3 set-ss
   68: \E ss4 data-stack S4 set-ss
   69: \E ss5 data-stack S5 set-ss
   70: \E ss6 data-stack S6 set-ss
   71: \E ss7 data-stack S7 set-ss
   72: \E ss8 data-stack S8 set-ss
   73: 
   74: \E IPss1 inst-stream S0 set-ss
   75: \E IPss1 inst-stream S1 set-ss
   76: \E IPss1 inst-stream S2 set-ss
   77: \E IPss1 inst-stream S3 set-ss
   78: \E IPss1 inst-stream S4 set-ss
   79: \E IPss1 inst-stream S5 set-ss
   80: \E IPss1 inst-stream S6 set-ss
   81: \E IPss1 inst-stream S7 set-ss
   82: \E IPss1 inst-stream S8 set-ss
   83: 
   84: \E fpss1 fp-stack S0 set-ss
   85: \E fpss1 fp-stack S1 set-ss
   86: \E fpss1 fp-stack S2 set-ss
   87: \E fpss1 fp-stack S3 set-ss
   88: \E fpss1 fp-stack S4 set-ss
   89: \E fpss1 fp-stack S5 set-ss
   90: \E fpss1 fp-stack S6 set-ss
   91: \E fpss1 fp-stack S7 set-ss
   92: \E fpss1 fp-stack S8 set-ss
   93: 
   94: \E data-stack to cache-stack
   95: \E here 9 cache-states 2! s0 , s1 , s2 , s3 , s4 , s5 , s6 , s7 , s8 ,
   96: \ \E here 2 cache-states 2! s0 , s1 ,
   97: 
   98: \ !! the following should be automatic
   99: \E S1 to state-default
  100: \E state-default to state-in
  101: \E state-default to state-out