introvirt::x86::Flags Class Reference

Handler for the x86 EFLAGS/RFLAGS register. More...

#include <Flags.hh>

Public Member Functions
bool	carry () const
	Get the CF (Carry flag) bit.
bool	parity () const
	Get the PF (Parity flag) bit.
bool	adjust () const
	Get the AF (Adjust flag) bit.
bool	zero () const
	Get the ZF (Zero flag) bit.
bool	sign () const
	Get the SF (Sign flag) bit.
bool	trap () const
	Get the TF (Trap flag) bit.
bool	interrupt () const
	Get the IF (interrupt flag) bit.
void	interrupt (bool val)
	Set the IF (interrupt flag) flag.
bool	direction () const
	Get the DF (Direction flag) bit.
bool	overflow () const
	Get the OF (Overflow flag) bit.
int8_t	iopl () const
	Get the IOPL (I/O privilege level) bits.
bool	nested_task () const
	Get the NT (Nested-task flag) bit.
bool	resume () const
	Get the RF (Resume flag) bit.
bool	virtual_8086 () const
	Get the VM (Virtual 8086 mode) bit.
bool	alignment_check () const
	Get the AC (Aligment-check) bit.
bool	virtual_interrupt () const
	Get the VIF (Virtual-interrupt flag) bit.
bool	virtual_interrupt_pending () const
	Get the VIP (Virtual-interrupt pending flag) bit.
bool	cpuid () const
	Get the ID (CPUID) bit.
uint64_t	value () const
	Get the raw flags value.
void	value (uint64_t value)
	Set the raw flags value.
	Flags ()
	Construct a new Flags instance (default)
	Flags (uint64_t flags)
	Construct a new Flags instances.
	Flags (uint64_t &flags, bool *modified)
	Construct a new Flags instances using a reference variable.
	Flags (const Flags &src)=delete
Flags &	operator= (const Flags &)=delete
Flags &	operator= (Flags &&) noexcept=default

Detailed Description

Handler for the x86 EFLAGS/RFLAGS register.

Constructor & Destructor Documentation

Flags() [1/4]

introvirt::x86::Flags::Flags ( )

explicit

Construct a new Flags instance (default)

Flags() [2/4]

introvirt::x86::Flags::Flags ( uint64_t  flags )

explicit

Construct a new Flags instances.

Parameters

flags

The value to initially set

Flags() [3/4]

introvirt::x86::Flags::Flags ( uint64_t &  flags, bool *  modified  )

explicit

Construct a new Flags instances using a reference variable.

This is primarily intended for backends to use to update a struct of registers.

Parameters

flags	A reference to the flags value to use/update
modified	A variable to set to true if any field is modified

Flags() [4/4]

introvirt::x86::Flags::Flags ( const Flags &  src )

delete

Member Function Documentation

adjust()

bool introvirt::x86::Flags::adjust

(

)

const

Get the AF (Adjust flag) bit.

Returns

true if the AF bit is set

false if the AF bit is not set

alignment_check()

bool introvirt::x86::Flags::alignment_check

(

)

const

Get the AC (Aligment-check) bit.

Returns

true if the AC bit is set

false if the AC bit is not set

carry()

bool introvirt::x86::Flags::carry

(

)

const

Get the CF (Carry flag) bit.

Returns

true if the CF bit is set

false if the CF bit is not set

cpuid()

bool introvirt::x86::Flags::cpuid

(

)

const

Get the ID (CPUID) bit.

Returns

true if the ID bit is set

false if the ID bit is not set

direction()

bool introvirt::x86::Flags::direction

(

)

const

Get the DF (Direction flag) bit.

Returns

true if the DF bit is set

false if the DF bit is not set

interrupt() [1/2]

bool introvirt::x86::Flags::interrupt

(

)

const

Get the IF (interrupt flag) bit.

Returns

true if the IF bit is set

false if the IF bit is not set

interrupt() [2/2]

void introvirt::x86::Flags::interrupt

(

bool

val

)

Set the IF (interrupt flag) flag.

Parameters

val	The value to the flag to

iopl()

int8_t introvirt::x86::Flags::iopl

(

)

const

Get the IOPL (I/O privilege level) bits.

Returns

The IOPL value

nested_task()

bool introvirt::x86::Flags::nested_task

(

)

const

Get the NT (Nested-task flag) bit.

Returns

true if the NT bit is set

false if the NT bit is not set

operator=() [1/2]

Flags & introvirt::x86::Flags::operator= ( const Flags &  )

delete

operator=() [2/2]

Flags & introvirt::x86::Flags::operator= ( Flags &&  )

defaultnoexcept

overflow()

bool introvirt::x86::Flags::overflow

(

)

const

Get the OF (Overflow flag) bit.

Returns

true if the OF bit is set

false if the OF bit is not set

parity()

bool introvirt::x86::Flags::parity

(

)

const

Get the PF (Parity flag) bit.

Returns

true if the PF bit is set

false if the PF bit is not set

resume()

bool introvirt::x86::Flags::resume

(

)

const

Get the RF (Resume flag) bit.

Returns

true if the RF bit is set

false if the RF bit is not set

sign()

bool introvirt::x86::Flags::sign

(

)

const

Get the SF (Sign flag) bit.

Returns

true if the SF bit is set

false if the SF bit is not set

trap()

bool introvirt::x86::Flags::trap

(

)

const

Get the TF (Trap flag) bit.

Returns

true if the TF bit is set

false if the TF bit is not set

value() [1/2]

uint64_t introvirt::x86::Flags::value

(

)

const

Get the raw flags value.

Returns

uint64_t The raw flags value

value() [2/2]

void introvirt::x86::Flags::value

(

uint64_t

value

)

Set the raw flags value.

Parameters

value

The value to set

virtual_8086()

bool introvirt::x86::Flags::virtual_8086

(

)

const

Get the VM (Virtual 8086 mode) bit.

Returns

true if the VM bit is set

false if the VM bit is not set

virtual_interrupt()

bool introvirt::x86::Flags::virtual_interrupt

(

)

const

Get the VIF (Virtual-interrupt flag) bit.

Returns

true if the VIF bit is set

false if the VIF bit is not set

virtual_interrupt_pending()

bool introvirt::x86::Flags::virtual_interrupt_pending

(

)

const

Get the VIP (Virtual-interrupt pending flag) bit.

Returns

true if the VIP bit is set

false if the VIP bit is not set

zero()

bool introvirt::x86::Flags::zero

(

)

const

Get the ZF (Zero flag) bit.

Returns

true if the ZF bit is set

false if the ZF bit is not set

---

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

• /home/runner/work/IntroVirt/IntroVirt/include/introvirt/core/arch/x86/Flags.hh