Reserve length bytes in the bss section for a local symbol,
aligned to the power of two specified by align. length and
align must be positive absolute expressions. This directive
differs from `.lcomm' only in that it permits you to specify
an alignment. See section .lcomm.
.extended flonums
.extended expects zero or more flonums, separated by commas; for
each flonum, `.extended' emits an IEEE extended-format (80-bit)
floating-point number.
.leafproc call-lab, bal-lab
You can use the `.leafproc' directive in conjunction with the
optimized callj instruction to enable faster calls of leaf
procedures. If a procedure is known to call no other procedures, you
may define an entry point that skips procedure prolog code (and that does
not depend on system-supplied saved context), and declare it as the
bal-lab using `.leafproc'. If the procedure also has an
entry point that goes through the normal prolog, you can specify that
entry point as call-lab.
A `.leafproc' declaration is meant for use in conjunction with the
optimized call instruction `callj'; the directive records the data
needed later to choose between converting the `callj' into a
bal or a call.
call-lab is optional; if only one argument is present, or if the
two arguments are identical, the single argument is assumed to be the
bal entry point.
.sysproc name, index
The `.sysproc' directive defines a name for a system procedure.
After you define it using `.sysproc', you can use name to
refer to the system procedure identified by index when calling
procedures with the optimized call instruction `callj'.
Both arguments are required; index must be between 0 and 31
(inclusive).