[gforth] / gforth / cache1.vmg  

gforth: gforth/cache1.vmg


1 : anton 1.1 \ stack cache setup
2 :    
3 :     \ Copyright (C) 2003 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 2
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, write to the Free Software
19 :     \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20 :    
21 :     \E register IPTOS Cell
22 : anton 1.2 \E register spTOS Cell
23 :     \ \E register spb Cell
24 :     \ \E register spc Cell
25 :     \ \E register spd Cell
26 : anton 1.1
27 :     \E create IPregs IPTOS ,
28 : anton 1.2 \ \E create regs spc , spb , spTOS ,
29 :     \E create regs spTOS ,
30 : anton 1.1
31 :     \E IPregs 1 0 stack-state IPss1
32 : anton 1.2 \ \E regs 3 cells + 0 -1 stack-state ss0
33 :     \ \E regs 2 cells + 1 0 stack-state ss1
34 :     \ \E regs 1 cells + 2 1 stack-state ss2
35 :     \ \E regs 0 cells + 3 2 stack-state ss3
36 :     \E regs 1 0 stack-state ss1
37 : anton 1.1
38 : anton 1.2 \ the first of these is the default state (for now)
39 :     \ \E state S0
40 : anton 1.1 \E state S1
41 : anton 1.2 \ \E state S2
42 :     \ \E state S3
43 : anton 1.1
44 : anton 1.2 \ \E ss0 data-stack S0 set-ss
45 : anton 1.1 \E ss1 data-stack S1 set-ss
46 : anton 1.2 \ \E ss2 data-stack S2 set-ss
47 :     \ \E ss3 data-stack S3 set-ss
48 : anton 1.1
49 : anton 1.2 \ \E IPss1 inst-stream S0 set-ss
50 : anton 1.1 \E IPss1 inst-stream S1 set-ss
51 : anton 1.2 \ \E IPss1 inst-stream S2 set-ss
52 :     \ \E IPss1 inst-stream S3 set-ss
53 : anton 1.1
54 :     \E data-stack to cache-stack
55 : anton 1.2 \ \E here 4 cache-states 2! s0 , s1 , s2 , s3 ,
56 :     \E here 1 cache-states 2! s1 ,
57 : anton 1.1
58 :     \ !! the following should be automatic
59 : anton 1.2 \E S1 to state-default
60 : anton 1.1 \E state-default to state-in
61 :     \E state-default to state-out

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