SVM_SAVE

java.lang.Object

svm.instruction.SVM_Instruction

svm.instruction.SVM_SAVE

public class SVM_SAVE extends SVM_Instruction

SVM-INSTRUCTION: SAVE

Runtime Stack
	value1, value2, ... , value'size, oaddr →
	- empty

The oaddr of a save-object is popped off the Runtime stack. Then the complete Runtime stack is saved within the save-object.

See: SVM_PUSHLEN and SVM_RERSTORE See also S-Port - Definition of S-code - sect. 7. INTERMEDIATE RESULTS.

Link to GitHub: Source File.

Author:: S-Port: Definition of S-code, Øystein Myhre Andersen

Field Summary

Fields

Modifier and Type

Field

Description

static final int

saveEntityHead

The head size of the SAVENT instance

static final int

sizeOffset

The offset of the 'lng' attribute in the SAVENT instance

Fields inherited from class SVM_Instruction
iADD, iADDREG, iAND, iASSIGN, iCALL, iCALLSYS, iCOMPARE, iCONVERT, iDECO, iDIST, iDIV, iDUP, iENTER, iEQV, iGETO, iGOTO, iIMP, iINCO, iINITO, iJUMP, iJUMPIF, iLINE, iLOAD, iLOADA, iMax, iMULT, iNEG, iNOOP, iNOT, iOR, iPOPK, iPRECALL, iPUSHC, iPUSHLEN, iPUSHR, iREM, iRESTORE, iRETURN, iSAVE, iSETO, iSHIFT, iSTORE, iSUB, iSWITCH, iXOR, opcode
Constructor Summary

Constructors

Constructor

Description

SVM_SAVE()

Construct a new SVM_RETURN instruction
Method Summary

Modifier and Type

Method

Description

void

execute()

Execute this SVM instruction

static SVM_Instruction

read(AttributeInputStream inpt)

Reads an SVM_SAVE instruction from the given input.

private static void

saveStack()

Save the Runtime stack in the SAVENT instance

String

toString()

void

write(AttributeOutputStream oupt)

Write this SVM instruction to the given output.

Methods inherited from class SVM_Instruction
edOpcode, readObject

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details
- saveEntityHead
  public static final int saveEntityHead
  
  The head size of the SAVENT instance
  
  See Also:
  
  Constant Field Values
- sizeOffset
  public static final int sizeOffset
  
  The offset of the 'lng' attribute in the SAVENT instance
  
  See Also:
  
  Constant Field Values
Constructor Details
- SVM_SAVE
  
  public SVM_SAVE()
  
  Construct a new SVM_RETURN instruction
Method Details
- execute
  
  public void execute()
  
  Description copied from class: SVM_Instruction
  
  Execute this SVM instruction
  
  Overrides:
  
  execute in class SVM_Instruction
- saveStack
  
  private static void saveStack()
  
  Save the Runtime stack in the SAVENT instance
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object
- write
  
  public void write(AttributeOutputStream oupt) throws IOException
  
  Description copied from class: SVM_Instruction
  
  Write this SVM instruction to the given output.
  
  Overrides:
  
  write in class SVM_Instruction
  
  Parameters:
  
  oupt - the output stream
  
  Throws:
  
  IOException - if IOException occur
- read
  
  public static SVM_Instruction read(AttributeInputStream inpt) throws IOException
  
  Reads an SVM_SAVE instruction from the given input.
  
  Parameters:
  
  inpt - the input stream
  
  Returns:
  
  the SVM_SAVE instruction read
  
  Throws:
  
  IOException - if IOException occur