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7 The SASM Assembler

SX-Key/Blitz Development System Manual 2.0

• Parallax, Inc. • Page 63

7.4.2

The ENDM Directive

The ENDM directive takes the form:

ENDM

It simply marks the end of the macro declaration.

7.4.3

The EXITM Directive

The EXITM directive takes the form

EXITM

If assembled, it causes an invocation to stop interpolating lines of the macro body at this point. This is

sometimes useful when building complex macros. In most cases, the EXITM directive should be placed

within an IF, IFDEF, or IFNDEF structure.

7.4.4

The LOCAL Directive

The syntax for the LOCAL directive is

LOCAL

<label>[, <label>]…

It declares the labels named after the directive as private symbols. Private symbols are available only

inside a macro body. These symbols are private to each invocation of the particular macro and cannot

be referenced outside of the macro body.

The private symbol is used within a macro body just like any other label. Each time the macro is

invoked, SASM will assign each private symbol a unique name of the form ??0001, ??0002, ??0003, and

so forth. The unique name will appear in the listing file in place of all uses of the text of the private

symbol.

All LOCAL directives must appear immediately after the MACRO directive and before the first actual

line of the macro body.

7.4.5

The EXPAND and NOEXPAND Directives

The EXPAND and NOEXPAND directives specify how to handle macro calls for the purposes of list

generation. If a list file is needed that has no macro mnemonics expanded, simply place the noexpand

directive above the first macro call. The expand and noexpand directives can be used as often as desired

and will only affect the code below them. For example, if source code referenced two macros, M1 and

M2, and a list file was needed with only the M1 macro expanded, the expand/noexpand directives

might be used as follows:

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