Reference Guide

86 Chapter 4
Assembler Directives and Pseudo-Operations
.EXPORT Directive
MILLI_EXT Locates code for the entry point of an
external millicode routine.
PLABEL Locates a pointer to a procedure.
PRI_PROG Designates the primary program
entry point. The outer block of HP
Pascal/HP-UX and the main
program in HP FORTRAN 77/HP-UX
are type PRI_PROG.
In PA-RISC 2.0W (64-bit mode)
PRI_PROG symbols map to
STT_FUNC.
SEC_PROG Designates a secondary program
entry point.
In PA-RISC 2.0W (64-bit mode)
SEC_PROG symbols map to
STT_FUNC.
argument-
description Allows you to communicate to the linker the types of
registers used to receive floating point arguments and
return floating point return results. Similarly, this
information can be communicated in the .CALL
directive.
The linker requires this information, since the
Procedure Calling Convention described in the
documents under the topic PA-RISC Architecture at
http://www.software.hp.com/STK/ allows floating point
arguments and return values to reside in either
general registers or floating point registers, depending
on source language convention. At link time, the linker
ensures that both the caller and called procedure agree
on argument location. If not, the linker may insert code
to relocate the arguments (or return result) before
control is transferred to the called procedure or a
procedure return is completed.
The form of argument-description is described in See
“.CALL Directive” on page 63 in this chapter.