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- /*
- Little Smalltalk, version 2
- Written by Tim Budd, Oregon State University, July 1987
- */
- /*
- symbolic definitions for the bytecodes
- */
-
- # define Extended 0
- # define PushInstance 1
- # define PushArgument 2
- # define PushTemporary 3
- # define PushLiteral 4
- # define PushConstant 5
- # define AssignInstance 6
- # define AssignTemporary 7
- # define MarkArguments 8
- # define SendMessage 9
- # define SendUnary 10
- # define SendBinary 11
- # define DoPrimitive 13
- # define DoSpecial 15
-
- /* a few constants that can be pushed by PushConstant */
- # define minusOne 3 /* the value -1 */
- # define contextConst 4 /* the current context */
- # define nilConst 5 /* the constant nil */
- # define trueConst 6 /* the constant true */
- # define falseConst 7 /* the constant false */
-
- /* types of special instructions (opcode 15) */
-
- # define SelfReturn 1
- # define StackReturn 2
- # define Duplicate 4
- # define PopTop 5
- # define Branch 6
- # define BranchIfTrue 7
- # define BranchIfFalse 8
- # define AndBranch 9
- # define OrBranch 10
- # define SendToSuper 11
-