condcodes.hh File Reference

#include "base/bitfield.hh"
#include "base/trace.hh"

Go to the source code of this file.

Functions
bool	findCarry (int width, uint64_t dest, uint64_t src1, uint64_t src2)
	Calculate the carry flag from an addition. More...
bool	findOverflow (int width, uint64_t dest, uint64_t src1, uint64_t src2)
	Calculate the overflow flag from an addition. More...
bool	findParity (int width, uint64_t dest)
	Calculate the parity of a value. More...
bool	findNegative (int width, uint64_t dest)
	Calculate the negative flag. More...
bool	findZero (int width, uint64_t dest)
	Calculate the zero flag. More...

Function Documentation

bool findCarry ( int  width, uint64_t  dest, uint64_t  src1, uint64_t  src2  )

inline

Calculate the carry flag from an addition.

This should work even when a carry value is also added in.

Definition at line 43 of file condcodes.hh.

References ArmISA::shift.

Referenced by X86ISA::RegOpBase::genFlags().

bool findNegative ( int  width, uint64_t  dest  )

inline

Calculate the negative flag.

Definition at line 81 of file condcodes.hh.

References bits().

Referenced by X86ISA::RegOpBase::genFlags().

bool findOverflow ( int  width, uint64_t  dest, uint64_t  src1, uint64_t  src2  )

inline

Calculate the overflow flag from an addition.

Definition at line 55 of file condcodes.hh.

References ArmISA::shift, and ULL.

Referenced by X86ISA::RegOpBase::genFlags().

bool findParity ( int  width, uint64_t  dest  )

inline

Calculate the parity of a value.

1 is for odd parity and 0 is for even.

Definition at line 65 of file condcodes.hh.

References ArmISA::mask.

Referenced by X86ISA::RegOpBase::genFlags().

bool findZero ( int  width, uint64_t  dest  )

inline

Calculate the zero flag.

Definition at line 90 of file condcodes.hh.

References ArmISA::mask.

Referenced by X86ISA::RegOpBase::genFlags().