TAL Reference Manual

TAL Syntax Summary (Bracket-and-Brace Diagrams)

Appendix C—526371.001

C-32

'SG'-Equivalenced Structure Pointers

The 'SG'-equivalenced structure pointer declaration associates a structure pointer with

a location relative to the base address of the system global data area.

$AXADR Function

The $AXADR function returns an absolute extended address.

$BOUNDS Function

The $BOUNDS function checks the location of a parameter passed to a system

procedure to prevent a pointer that contains an incorrect address from overlaying the

stack (S) register with data.

$SWITCHES Function

The $SWITCHES function returns the current content of the switch register.

type { . } identifier = 'SG' [ " [ " index " ] " ]

{ .SG } [ { + } offset ]

{ .EXT} { - }

[ , { . } identifier = 'SG'

{ .SG }

{ .EXT}

[ " [ " index " ] " ] ] ... ;

[ { + } offset ]

{ - }

{ STRING } { . } identifier ( referral )

{ INT } { .SG }

{ .EXT }

= 'SG' [ " [ " index " ] " ]

[ { + } offset ]

{ - }

[ , { . } identifier ( referral )

{ .SG }

{ .EXT}

= 'SG' [ " [ " index " ] " ] ] ... ;

[ { + } offset ]

{ - }

$AXADR ( variable )

$BOUNDS ( param , count )