HP UX Developer Tools manual 68

Assembler Directives and Pseudo-Operations

.CALLINFO Directive

CALLER or	Indicates that this procedure calls other routines, so it
CALLS
	requires space in the stack for a frame marker and a
	fixed argument list. (When a program is assembled
	using the -foption, this becomes the default case.)
	The Assembler allocates stack space when it
	encounters an .ENTER pseudo-operation and
	deallocates this space when it encounters a .LEAVE
	pseudo-operation. The Assembler allocates 48 bytes for
	the PA-RISC 32-bit mode and 80 bytes for the PA-RISC
	64-bit (2.0W) mode.
	The frame marker and fixed argument list area occur
	at the top of the stack so you must take this space into
	account when locating local variables on the stack. You
	must allocate an area (using FRAME=) for a variable
	argument list when this area is needed.
	CALLER does not imply the existence of the parameter
	SAVE_RP.
	The CALLER and CALLS parameters are equivalent.
NO_CALLS	Indicates that the procedure does not call other
	procedures and, therefore, does not require a frame
	marker on the stack. This is the default case unless the
	program is assembled using the -foption.
CLEANUP	Indicates that this procedure requires cleanup during
	unwind.
ENTRY_FR=
register	Specifies the high end boundary of the Entry/Save
	floating-point register partition. The partition includes
	%fr12 through %fr15 for PA-RISC 1.0 and %fr12
	through %fr21 for PA-RISC 1.1. The Assembler
	automatically saves these registers when it encounters
	an .ENTER pseudo-operation and restores them when it
	encounters a .LEAVE pseudo-operation.
ENTRY_GR=
register	Specifies the high end boundary of the Entry/Save
	register partition. The partition may extend over
	registers %r3 through %r18. If you omit this
	parameter, no registers are saved.

68 Chapter 4