Description
The set of all registers and their values.
RegisterState objects are allocated on the heap and reference counted. The BaseSemantics::RegisterState is an abstract class that defines the interface. See the Rose::BinaryAnalysis::InstructionSemantics2 namespace for an overview of how the parts fit together.
Definition at line 26 of file BaseSemanticsRegisterState.h.
#include <BaseSemanticsRegisterState.h>
Classes | |
| class | WithFormatter |
| RegisterState with formatter. More... | |
Public Types | |
| typedef RegisterStatePtr | Ptr |
| Shared-ownership pointer for a RegisterState object. More... | |
Public Member Functions | |
| virtual RegisterStatePtr | create (const SValuePtr &protoval, const RegisterDictionary *regdict) const =0 |
| Virtual constructor. More... | |
| virtual RegisterStatePtr | clone () const =0 |
| Make a copy of this register state. More... | |
| SValuePtr | protoval () const |
| Return the protoval. More... | |
| virtual void | clear ()=0 |
| Removes stored values from the register state. More... | |
| virtual void | zero ()=0 |
| Set all registers to the zero. More... | |
| virtual bool | merge (const RegisterStatePtr &other, RiscOperators *ops)=0 |
| Merge register states for data flow analysis. More... | |
| virtual SValuePtr | readRegister (RegisterDescriptor reg, const SValuePtr &dflt, RiscOperators *ops)=0 |
| Read a value from a register. More... | |
| virtual SValuePtr | peekRegister (RegisterDescriptor reg, const SValuePtr &dflt, RiscOperators *ops)=0 |
| Read a register without side effects. More... | |
| virtual void | writeRegister (RegisterDescriptor reg, const SValuePtr &value, RiscOperators *ops)=0 |
| Write a value to a register. More... | |
| MergerPtr | merger () const |
| Property: Merger. More... | |
| void | merger (const MergerPtr &m) |
| Property: Merger. More... | |
| const RegisterDictionary * | get_register_dictionary () const |
| The register dictionary should be compatible with the register dictionary used for other parts of binary analysis. More... | |
| void | set_register_dictionary (const RegisterDictionary *rd) |
| The register dictionary should be compatible with the register dictionary used for other parts of binary analysis. More... | |
| void | print (std::ostream &stream, const std::string prefix="") const |
| Print the register contents. More... | |
| virtual void | print (std::ostream &, Formatter &) const =0 |
| Print the register contents. More... | |
| WithFormatter | with_format (Formatter &fmt) |
| Used for printing register states with formatting. More... | |
| WithFormatter | operator+ (Formatter &fmt) |
| Used for printing register states with formatting. More... | |
Static Public Member Functions | |
| static RegisterStatePtr | promote (const RegisterStatePtr &x) |
Protected Member Functions | |
| RegisterState (const SValuePtr &protoval, const RegisterDictionary *regdict) | |
Protected Attributes | |
| const RegisterDictionary * | regdict |
| Registers that are able to be stored by this state. More... | |
Member Typedef Documentation
| typedef RegisterStatePtr Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterState::Ptr |
Shared-ownership pointer for a RegisterState object.
See Shared ownership.
Definition at line 62 of file BaseSemanticsRegisterState.h.
Member Function Documentation
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pure virtual |
Virtual constructor.
The protoval argument must be a non-null pointer to a semantic value which will be used only to create additional instances of the value via its virtual constructors. The prototypical value is normally of the same type for all parts of a semantic analysis. The register state must be compatible with the rest of the binary analysis objects in use.
Implemented in Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric, Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState, and Rose::BinaryAnalysis::InstructionSemantics2::NativeSemantics::RegisterState.
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pure virtual |
Make a copy of this register state.
Implemented in Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric, Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState, and Rose::BinaryAnalysis::InstructionSemantics2::NativeSemantics::RegisterState.
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inline |
Property: Merger.
This property is optional details about how to merge two states. It is passed down to the register and memory state merge operation and to the semantic value merge operation. Users can subclass this to hold whatever information is necessary for merging. Unless the user overrides merge functions to do something else, all merging will use the same merger object – the one set for this property.
Definition at line 103 of file BaseSemanticsRegisterState.h.
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inline |
Property: Merger.
This property is optional details about how to merge two states. It is passed down to the register and memory state merge operation and to the semantic value merge operation. Users can subclass this to hold whatever information is necessary for merging. Unless the user overrides merge functions to do something else, all merging will use the same merger object – the one set for this property.
Definition at line 104 of file BaseSemanticsRegisterState.h.
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inline |
Return the protoval.
The protoval is used to construct other values via its virtual constructors.
Definition at line 108 of file BaseSemanticsRegisterState.h.
Referenced by Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric::create(), Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState::peekRegister(), and Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState::readRegister().
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inline |
The register dictionary should be compatible with the register dictionary used for other parts of binary analysis.
At this time (May 2013) the dictionary is only used when printing.
Definition at line 113 of file BaseSemanticsRegisterState.h.
References regdict.
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inline |
The register dictionary should be compatible with the register dictionary used for other parts of binary analysis.
At this time (May 2013) the dictionary is only used when printing.
Definition at line 114 of file BaseSemanticsRegisterState.h.
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pure virtual |
Removes stored values from the register state.
Depending on the register state implementation, this could either store new, distinct undefined values in each register, or it could simply erase all information about stored values leaving the register state truly empty. For instance RegisterStateGeneric, which uses variable length arrays to store information about a dynamically changing set of registers, clears its arrays to zero length.
Register states can also be initialized by clearing them or by explicitly writing new values into each desired register (or both). See RegisterStateGeneric::initialize_nonoverlapping for one way to initialize that register state.
Implemented in Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric, Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState, and Rose::BinaryAnalysis::InstructionSemantics2::NativeSemantics::RegisterState.
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pure virtual |
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pure virtual |
Merge register states for data flow analysis.
Merges the other state into this state, returning true if this state changed.
Implemented in Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric, Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState, and Rose::BinaryAnalysis::InstructionSemantics2::NativeSemantics::RegisterState.
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pure virtual |
Read a value from a register.
The register descriptor, reg, not only describes which register, but also which bits of that register (e.g., "al", "ah", "ax", "eax", and "rax" are all the same hardware register on an amd64, but refer to different parts of that register). The RISC operations are provided so that they can be used to extract the correct bits from a wider hardware register if necessary.
The dflt value is written into the register state if the register was not defined in the state. By doing this, a subsequent read of the same register will return the same value. Some register states cannot distinguish between a register that was never accessed and a register that was only read, in which case dflt is not used since all registers are already initialized.
See RiscOperators::readRegister for more details.
Implemented in Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric, Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState, and Rose::BinaryAnalysis::InstructionSemantics2::NativeSemantics::RegisterState.
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pure virtual |
Read a register without side effects.
This is similar to readRegister except it doesn't modify the register state in any way.
Implemented in Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric, Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState, and Rose::BinaryAnalysis::InstructionSemantics2::NativeSemantics::RegisterState.
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pure virtual |
Write a value to a register.
The register descriptor, reg, not only describes which register, but also which bits of that register (e.g., "al", "ah", "ax", "eax", and "rax" are all the same hardware register on an amd64, but refer to different parts of that register). The RISC operations are provided so that they can be used to insert the value bits into a wider the hardware register if necessary. See RiscOperators::readRegister for more details.
Implemented in Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric, Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState, and Rose::BinaryAnalysis::InstructionSemantics2::NativeSemantics::RegisterState.
| void Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterState::print | ( | std::ostream & | stream, |
| const std::string | prefix = "" |
||
| ) | const |
Print the register contents.
This emits one line per register and contains the register name and its value.
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pure virtual |
Print the register contents.
This emits one line per register and contains the register name and its value.
Implemented in Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric, Rose::BinaryAnalysis::InstructionSemantics2::NullSemantics::RegisterState, and Rose::BinaryAnalysis::InstructionSemantics2::NativeSemantics::RegisterState.
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inline |
Used for printing register states with formatting.
The usual way to use this is:
Definition at line 187 of file BaseSemanticsRegisterState.h.
Referenced by operator+().
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inline |
Used for printing register states with formatting.
The usual way to use this is:
Definition at line 188 of file BaseSemanticsRegisterState.h.
References with_format().
Member Data Documentation
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protected |
Registers that are able to be stored by this state.
Definition at line 31 of file BaseSemanticsRegisterState.h.
Referenced by Rose::BinaryAnalysis::InstructionSemantics2::BaseSemantics::RegisterStateGeneric::create(), and get_register_dictionary().
The documentation for this class was generated from the following file:
