File:  [gforth] / gforth / cache1.vmg
Revision 1.8: download - view: text, annotated - select for diffs
Mon Dec 31 17:34:58 2007 UTC (15 years, 11 months ago) by anton
Branches: MAIN
CVS tags: HEAD
updated copyright years

\ stack cache setup

\ Copyright (C) 2003,2004,2007 Free Software Foundation, Inc.

\ This file is part of Gforth.

\ Gforth 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
\ 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.

\E register IPTOS Cell
\E register spTOS Cell
\E register spb Cell
\E register spc Cell
\  \E register spd Cell

\E create IPregs IPTOS ,
\E create regs spc , spb , spTOS ,
\ \E create regs spTOS ,

\E IPregs 1 0 stack-state IPss1
\E regs 3 th 0  -1 stack-state ss0
\E regs 2 th 1  0 stack-state ss1
\E regs 1 th 2  1 stack-state ss2
\ \E regs 0 th 3  2 stack-state ss3
\ \E regs 1 th 0 -1 stack-state ss0
\ \E regs           1  0 stack-state ss1

\ the first of these is the default state (for now)
\E state S1
\E state S0
\E state S2
\ \E state S3

\E ss0 data-stack S0 set-ss
\E ss1 data-stack S1 set-ss
\E ss2 data-stack S2 set-ss
\  \E ss3 data-stack S3 set-ss

\E IPss1 inst-stream S0 set-ss
\E IPss1 inst-stream S1 set-ss
\E IPss1 inst-stream S2 set-ss
\  \E IPss1 inst-stream S3 set-ss

\E data-stack to cache-stack
\E here 3 cache-states 2! s0 , s1 , s2 ,
\ \E here 2 cache-states 2! s0 , s1 ,

\ !! the following should be automatic
\E S1 to state-default
\E state-default to state-in
\E state-default to state-out

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