Chapter 19. HPPA Dependent Features

119

.export name [ ,typ ] [ ,param=r ]

Make a procedure

name

available to callers.

typ

, if present, must be one of

absolute

,

code

(ELF only, not SOM),

data

,

entry

,

data

,

entry

,

millicode

,

plabel

,

pri_prog

, or

sec_prog

.

param

, if present, provides either relocation information for the procedure arguments and result,

or a privilege level.

param

may be

argwn

(where

n

ranges from

0

to

3

, and indicates one of

four one word arguments);

rtnval

(the procedure's result); or

priv_lev

(privilege level). For

arguments or the result,

r

specifies how to relocate, and must be one of

no

(not relocatable),

gr

(argument is in general register),

fr

(in floating point register), or

fu

(upper half of float register).

For

priv_lev

,

r

is an integer.

.half n

Define a two byte integer constant

n

; synonym for the portable

as

directive

.short

.

.import name [ ,typ ]

Converse of

.export

; make a procedure available to call. The arguments use the same conven 

tions as the first two arguments for

.export

.

.label name

Define

name

as a label for the current assembly location.

.leave

Not yet supported; the assembler rejects programs containing this directive.

.origin lc

Advance location counter to

lc

. Synonym for the

as

portable directive

.org

.

.param name [ ,typ ] [ ,param=r ]

Similar to

.export

, but used for static procedures.

.proc

Use preceding the first statement of a procedure.

.procend

Use following the last statement of a procedure.

label .reg expr

Synonym for

.equ

; define

label

with the absolute expression

expr

as its value.

.space secname [ ,params ]

Switch to section

secname

, creating a new section by that name if necessary. You may only

use

params

when creating a new section, not when switching to an existing one.

secname

may

identify a section by number rather than by name.

If specified, the list

params

declares attributes of the section, identified by keywords. The key 

words recognized are

spnum=exp

(identify this section by the number

exp

, an absolute expres 

sion),

sort=exp

(order sections according to this sort key when linking;

exp

is an absolute ex 

pression),

unloadable

(section contains no loadable data),

notdefined

(this section defined

elsewhere), and

private

(data in this section not available to other programs).