Reference Guide

Chapter 4 91
Assembler Directives and Pseudo-Operations
.IMPORT Directive
TSPECIFIC The TSPECIFIC keyword indicates that this is a thread
local storage symbol.
Discussion
The .IMPORT directive uses a series of keywords to define a symbol to
the linker. These keywords declare the symbol's type. Because the
.IMPORT directive specifies that another object module contains this
symbol's formal definition, the Assembler does not associate an imported
symbol with any particular subspace. When an .IMPORT directive lacks
a type parameter, the Assembler assigns the type of the current subspace
(either $CODE$ or $DATA$) to the symbol.
Example
The .IMPORT directive lets the Assembler access symname as a
recognized symbol, even though it is actually defined elsewhere. The
linker resolves the difference.
.IMPORT symname,CODE ;import symname as a CODE symbol.
.CODE ;begin CODE subspace
LDIL L’symname,%r1
BLE,n R’symname(%sr4,%r1) ;call the procedure symname in %sr4
space.
NOP
.END