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PowerISA::BranchRegCond Class Reference

Base class for conditional, register-based branches. More...

#include <branch.hh>

Inheritance diagram for PowerISA::BranchRegCond:
PowerISA::BranchCond PowerISA::PCDependentDisassembly PowerISA::PowerStaticInst StaticInst RefCounted

Protected Member Functions

 BranchRegCond (const char *mnem, MachInst _machInst, OpClass __opClass)
 Constructor. More...
 
PowerISA::PCState branchTarget (ThreadContext *tc) const
 Return the target address for an indirect branch (jump). More...
 
std::string generateDisassembly (Addr pc, const SymbolTable *symtab) const
 Internal function to generate disassembly string. More...
 
- Protected Member Functions inherited from PowerISA::BranchCond
 BranchCond (const char *mnem, MachInst _machInst, OpClass __opClass)
 Constructor. More...
 
bool ctrOk (uint32_t &ctr) const
 
bool condOk (uint32_t cr) const
 
- Protected Member Functions inherited from PowerISA::PCDependentDisassembly
 PCDependentDisassembly (const char *mnem, ExtMachInst _machInst, OpClass __opClass)
 Constructor. More...
 
const std::string & disassemble (Addr pc, const SymbolTable *symtab) const
 Return string representation of disassembled instruction. More...
 
- Protected Member Functions inherited from PowerISA::PowerStaticInst
 PowerStaticInst (const char *mnem, MachInst _machInst, OpClass __opClass)
 
uint32_t insertCRField (uint32_t cr, uint32_t bf, uint32_t value) const
 
void printReg (std::ostream &os, int reg) const
 Print a register name for disassembly given the unique dependence tag number (FP or int). More...
 
std::string generateDisassembly (Addr pc, const SymbolTable *symtab) const
 Internal function to generate disassembly string. More...
 
void advancePC (PowerISA::PCState &pcState) const
 
- Protected Member Functions inherited from StaticInst
 StaticInst (const char *_mnemonic, ExtMachInst _machInst, OpClass __opClass)
 Constructor. More...
 

Additional Inherited Members

- Public Types inherited from StaticInst
enum  { MaxInstSrcRegs = TheISA::MaxInstSrcRegs, MaxInstDestRegs = TheISA::MaxInstDestRegs }
 
typedef TheISA::ExtMachInst ExtMachInst
 Binary extended machine instruction type. More...
 
typedef TheISA::RegIndex RegIndex
 Logical register index type. More...
 
- Public Member Functions inherited from StaticInst
int8_t numCCDestRegs () const
 Number of coprocesor destination regs. More...
 
void setFirstMicroop ()
 
void setLastMicroop ()
 
void setDelayedCommit ()
 
void setFlag (Flags f)
 
OpClass opClass () const
 Operation class. Used to select appropriate function unit in issue. More...
 
RegIndex destRegIdx (int i) const
 Return logical index (architectural reg num) of i'th destination reg. More...
 
RegIndex srcRegIdx (int i) const
 Return logical index (architectural reg num) of i'th source reg. More...
 
virtual const StaticInstPtreaCompInst () const
 Memory references only: returns "fake" instruction representing the effective address part of the memory operation. More...
 
virtual const StaticInstPtrmemAccInst () const
 Memory references only: returns "fake" instruction representing the memory access part of the memory operation. More...
 
virtual ~StaticInst ()
 
virtual Fault execute (ExecContext *xc, Trace::InstRecord *traceData) const =0
 
virtual Fault eaComp (ExecContext *xc, Trace::InstRecord *traceData) const
 
virtual Fault initiateAcc (ExecContext *xc, Trace::InstRecord *traceData) const
 
virtual Fault completeAcc (Packet *pkt, ExecContext *xc, Trace::InstRecord *traceData) const
 
virtual void advancePC (TheISA::PCState &pcState) const =0
 
virtual StaticInstPtr fetchMicroop (MicroPC upc) const
 Return the microop that goes with a particular micropc. More...
 
virtual TheISA::PCState branchTarget (const TheISA::PCState &pc) const
 Return the target address for a PC-relative branch. More...
 
bool hasBranchTarget (const TheISA::PCState &pc, ThreadContext *tc, TheISA::PCState &tgt) const
 Return true if the instruction is a control transfer, and if so, return the target address as well. More...
 
void printFlags (std::ostream &outs, const std::string &separator) const
 Print a separator separated list of this instruction's set flag names on the given stream. More...
 
std::string getName ()
 Return name of machine instruction. More...
 
int8_t numSrcRegs () const
 Number of source registers. More...
 
int8_t numDestRegs () const
 Number of destination registers. More...
 
int8_t numFPDestRegs () const
 Number of floating-point destination regs. More...
 
int8_t numIntDestRegs () const
 Number of integer destination regs. More...
 
bool isNop () const
 
bool isMemRef () const
 
bool isLoad () const
 
bool isStore () const
 
bool isStoreConditional () const
 
bool isInstPrefetch () const
 
bool isDataPrefetch () const
 
bool isPrefetch () const
 
bool isInteger () const
 
bool isFloating () const
 
bool isCC () const
 
bool isControl () const
 
bool isCall () const
 
bool isReturn () const
 
bool isDirectCtrl () const
 
bool isIndirectCtrl () const
 
bool isCondCtrl () const
 
bool isUncondCtrl () const
 
bool isCondDelaySlot () const
 
bool isThreadSync () const
 
bool isSerializing () const
 
bool isSerializeBefore () const
 
bool isSerializeAfter () const
 
bool isSquashAfter () const
 
bool isMemBarrier () const
 
bool isWriteBarrier () const
 
bool isNonSpeculative () const
 
bool isQuiesce () const
 
bool isIprAccess () const
 
bool isUnverifiable () const
 
bool isSyscall () const
 
bool isMacroop () const
 
bool isMicroop () const
 
bool isDelayedCommit () const
 
bool isLastMicroop () const
 
bool isFirstMicroop () const
 
bool isMicroBranch () const
 
- Public Member Functions inherited from RefCounted
 RefCounted ()
 We initialize the reference count to zero and the first object to take ownership of it must increment it to one. More...
 
virtual ~RefCounted ()
 We make the destructor virtual because we're likely to have virtual functions on reference counted objects. More...
 
void incref ()
 Increment the reference count. More...
 
void decref ()
 Decrement the reference count and destroy the object if all references are gone. More...
 
- Public Attributes inherited from StaticInst
const ExtMachInst machInst
 The binary machine instruction. More...
 
- Static Public Attributes inherited from StaticInst
static StaticInstPtr nullStaticInstPtr
 Pointer to a statically allocated "null" instruction object. More...
 
- Protected Attributes inherited from PowerISA::BranchCond
uint32_t bo
 Fields needed for conditions. More...
 
uint32_t bi
 
- Protected Attributes inherited from PowerISA::PCDependentDisassembly
Addr cachedPC
 Cached program counter from last disassembly. More...
 
const SymbolTablecachedSymtab
 Cached symbol table pointer from last disassembly. More...
 
- Protected Attributes inherited from StaticInst
std::bitset< Num_Flags > flags
 Flag values for this instruction. More...
 
OpClass _opClass
 See opClass(). More...
 
int8_t _numSrcRegs
 See numSrcRegs(). More...
 
int8_t _numDestRegs
 See numDestRegs(). More...
 
RegIndex _destRegIdx [MaxInstDestRegs]
 See destRegIdx(). More...
 
RegIndex _srcRegIdx [MaxInstSrcRegs]
 See srcRegIdx(). More...
 
const char * mnemonic
 Base mnemonic (e.g., "add"). More...
 
std::string * cachedDisassembly
 String representation of disassembly (lazily evaluated via disassemble()). More...
 
int8_t _numFPDestRegs
 The following are used to track physical register usage for machines with separate int & FP reg files. More...
 
int8_t _numIntDestRegs
 
int8_t _numCCDestRegs
 

Detailed Description

Base class for conditional, register-based branches.

Definition at line 236 of file branch.hh.

Constructor & Destructor Documentation

PowerISA::BranchRegCond::BranchRegCond ( const char *  mnem,
MachInst  _machInst,
OpClass  __opClass 
)
inlineprotected

Constructor.

Definition at line 241 of file branch.hh.

Member Function Documentation

PowerISA::PCState BranchRegCond::branchTarget ( ThreadContext tc) const
protectedvirtual

Return the target address for an indirect branch (jump).

The register value is read from the supplied thread context, so the result is valid only if the thread context is about to execute the branch in question. Invalid if not an indirect branch (i.e. isIndirectCtrl() should be true).

Reimplemented from StaticInst.

Definition at line 154 of file branch.cc.

References StaticInst::_numSrcRegs, StaticInst::_srcRegIdx, and ThreadContext::readIntReg().

std::string BranchRegCond::generateDisassembly ( Addr  pc,
const SymbolTable symtab 
) const
protectedvirtual

Internal function to generate disassembly string.

Implements StaticInst.

Definition at line 161 of file branch.cc.

References PowerISA::BranchCond::bi, PowerISA::BranchCond::bo, ccprintf(), StaticInst::mnemonic, and ArmISA::ss.


The documentation for this class was generated from the following files:

Generated on Fri Jun 9 2017 13:04:34 for gem5 by doxygen 1.8.6