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1992-02-15
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3KB
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142 lines
"======================================================================
|
| Memory definitions
|
======================================================================"
"======================================================================
|
| Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc.
| Written by Steve Byrne.
|
| This file is part of GNU Smalltalk.
|
| GNU Smalltalk 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 1, or (at your option) any later version.
|
| GNU Smalltalk 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
| GNU Smalltalk; see the file COPYING. If not, write to the Free Software
| Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
======================================================================"
"
| Change Log
| ============================================================================
| Author Date Change
| sbb 16 Mar 91 Class creation now separate statement.
|
| sbyrne 29 May 89 created.
|
"
Object variableWordSubclass: #Memory
instanceVariableNames: ''
classVariableNames: ''
poolDictionaries: ''
category: nil
!
Memory comment:
'I provide access to actual machine addresses of OOPS and objects. I
have no instances; you send messages to my class to map between an object
and the address of its OOP or object.' !
!Memory class methodsFor: 'accessing'!
"Note that the types could be given symbolic names and installed in a
class variable, or could be methods that return the proper values (such as
the priorities for processes)."
charAt: anAddress
^self type: 0 at: anAddress
!
unsignedCharAt: anAddress
^self type: 1 at: anAddress
!
shortAt: anAddress
^self type: 2 at: anAddress
!
unsignedShortAt: anAddress
^self type: 3 at: anAddress
!
intAt: anAddress
^self type: 4 at: anAddress
!
unsignedIntAt: anAddress
^self type: 5 at: anAddress
!
floatAt: anAddress
^self type: 6 at: anAddress
!
doubleAt: anAddress
^self type: 7 at: anAddress
!
stringAt: anAddress
^self type: 8 at: anAddress
!
deref: anAddress
^self intAt: anAddress
!
"Storing methods"
charAt: anAddress put: aValue
^self type: 0 at: anAddress put: aValue
!
unsignedCharAt: anAddress put: aValue
^self type: 1 at: anAddress put: aValue
!
shortAt: anAddress put: aValue
^self type: 2 at: anAddress put: aValue
!
unsignedShortAt: anAddress put: aValue
^self type: 3 at: anAddress put: aValue
!
intAt: anAddress put: aValue
^self type: 4 at: anAddress put: aValue
!
unsignedIntAt: anAddress put: aValue
^self type: 5 at: anAddress put: aValue
!
floatAt: anAddress put: aValue
^self type: 6 at: anAddress put: aValue
!
doubleAt: anAddress put: aValue
^self type: 7 at: anAddress put: aValue
!
stringAt: anAddress put: aValue
^self type: 8 at: anAddress put: aValue
!!
!Memory methodsFor: 'basic'!
!