A base class for operations that access volatile memory. More...
#include <userop.hh>
Inheritance diagram for ghidra::VolatileOp:
Public Member Functions | |
| VolatileOp (Architecture *g, const string &nm, int4 ind) | |
| Constructor. | |
| virtual void | decode (Decoder &decoder) |
| Currently volatile ops only need their name. | |
 Public Member Functions inherited from ghidra::UserPcodeOp | |
| UserPcodeOp (Architecture *g, const string &nm, int4 ind) | |
| Construct from name and index. | |
| const string & | getName (void) const |
| Get the low-level name of the p-code op. | |
| int4 | getIndex (void) const |
| Get the constant id of the op. | |
| uint4 | getDisplay (void) const |
| Get display type (0=functional) | |
| virtual | ~UserPcodeOp (void) |
| Destructor. | |
| virtual string | getOperatorName (const PcodeOp *op) const |
| Get the symbol representing this operation in decompiled code. More... | |
| virtual int4 | extractAnnotationSize (const Varnode *vn, const PcodeOp *op) |
| Assign a size to an annotation input to this userop. More... | |
Static Protected Member Functions | |
| static string | appendSize (const string &base, int4 size) |
| Append a suffix to a string encoding a specific size. More... | |
Additional Inherited Members | |
| Public Types inherited from ghidra::UserPcodeOp | |
| enum | userop_flags { annotation_assignment = 1, no_operator = 2 } |
| Enumeration of different boolean properties that can be assigned to a CALLOTHER. More... | |
| Protected Attributes inherited from ghidra::UserPcodeOp | |
| string | name |
| Low-level name of p-code operator. | |
| int4 | useropindex |
| Index passed in the CALLOTHER op. | |
| Architecture * | glb |
| Architecture owning the user defined op. | |
| uint4 | flags |
| Boolean attributes of the CALLOTHER. | |
Detailed Description
A base class for operations that access volatile memory.
The decompiler models volatile memory by converting any direct read or write of the memory to a function that accesses the memory. This class and its derived classes model such functions. Within the p-code control-flow, dedicated user defined ops serve as a placeholder for the (possibly unknown) effects of modifying/accessing the memory and prevent accidental constant propagation.
Member Function Documentation
◆ appendSize()
|
staticprotected |
Append a suffix to a string encoding a specific size.
This allows a single user defined operator to have multiple symbol names based on the size of its operands in context.
- Parameters
-
base is the string to append the suffix to size is the size to encode expressed as the number of bytes
- Returns
- the appended string
The documentation for this class was generated from the following files:
- userop.hh
- userop.cc
