SaM Program

(CORE/PROGRAM.JAVA,

CORE/SAMPROGRAM.JAVA)

A SaM Program is an enclosing container for Instructions, a ReferenceTable, and a SymbolTable. The assembler generates a Program object, and resolves any references using the constructed symbol table. The processor loads the program, and executes each instruction of the program object, using the PC register as a numeric index.

The SaM program provides the following methods:

• void addInst (Instruction ins) - append an instruction object to the program
• void addInst (Instruction[] ins) - append an array of instruction objects to the program
• Instruction getInst(int pos) - return the instruction at the specified index
• List<Instruction> getInstList() - return all instructions of this program as a list
• int getLength() - return the number of instructions
• SymbolTable getSymbolTable() - return the symbol table for this program
• ReferenceTable getReferenceTable() - return the reference table for this program
• void setSymbolTable(SymbolTable table) - set the symbol table for this program
• void setReferenceTable(ReferenceTable table) - set the reference table for this program
• boolean isExecutable() - return if the program is executable (all references are resolved)
• void resolveReferences() - resolve the program's references from its symbol table
• void resolveReferencesFrom(Program prog) - resolve another program's references