BasicBlockModel

java.lang.Object
- ghidra.program.model.block.SimpleBlockModel
- - ghidra.program.model.block.BasicBlockModel

All Implemented Interfaces:

CodeBlockModel
```
public class BasicBlockModel
extends SimpleBlockModel
```
This BlockModel implements the Basic block model. Each Codeblock is made up of contiguous instructions in address order. Blocks satisfy the following:
1. Any instruction with a label starts a block.
2. Each instruction that could cause program control flow to change local to the containing function (i.e., excludes calls) is the last instruction of a Codeblock.
3. All other instructions are "NOP" fallthroughs, meaning after execution the program counter will be at the instruction immediately following.
4. Any instruction that is unreachable and has no label is also considered the start of a block.
So a CodeBlock in this model consists of contiguous code that has zero or more fallthrough or call instructions followed by a single flow instruction. Each block may or may not have a label at the first instruction, but may not have a label at any other instruction contained in the block. This model handles delay slot instructions with the following assumptions:
1. The delay slot depth of the delayed instruction will always correspond to the number of delay slot instructions immediately following the instruction. The model may not behave properly if the disassembled code violates this assumption.
See Also:

CodeBlockModel

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String NAME
- Fields inherited from class ghidra.program.model.block.SimpleBlockModel
  emptyArray, followIndirectFlows, foundBlockMap, includeExternals, listing, program, referenceMgr
- Fields inherited from interface ghidra.program.model.block.CodeBlockModel
  emptyBlockArray

Constructor Summary

Constructors
Constructor Description

BasicBlockModel(Program program)

BasicBlockModel(Program program, boolean includeExternals)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected boolean`	`hasEndOfBlockFlow(Instruction instr)`	Examine an instruction for out-bound flows which qualify it as an end-of-block.

Methods inherited from class ghidra.program.model.block.SimpleBlockModel
allowsBlockOverlap, createSimpleDataBlock, externalsIncluded, getBasicBlockModel, getCodeBlockAt, getCodeBlocks, getCodeBlocksContaining, getCodeBlocksContaining, getDestinations, getFirstCodeBlockContaining, getFlowType, getListing, getName, getName, getNumDestinations, getNumSources, getProgram, getSources, isBlockStart, isBlockStart

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NAME
```
public static final java.lang.String NAME
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - BasicBlockModel
```
public BasicBlockModel(Program program)
```
  - BasicBlockModel
```
public BasicBlockModel(Program program,
                       boolean includeExternals)
```
- Method Detail
  - hasEndOfBlockFlow
```
protected boolean hasEndOfBlockFlow(Instruction instr)
```
    Description copied from class: SimpleBlockModel
    
    Examine an instruction for out-bound flows which qualify it as an end-of-block.
    
    Overrides:
    
    hasEndOfBlockFlow in class SimpleBlockModel
    
    Returns:
    
    true if end-of-block flow exists from specified instruction.