270
Section 3: Assembler
TI
-
89 / TI
-
92 Plus Sierra C Assembler Reference Manual
Not for Distribution
Beta Version February 2, 2001
XREF — Declare External a Referenced Symbol
Syntax
XREF[.S] [
section
:]
symbol
[, [
section
:]
symbol
] . . .
Description
section
Specifies the number of the section in which the symbol is
defined. It is an absolute expression that cannot contain any
forward, external, or undefined references.
symbol
Specifies a symbol that is referenced (but not defined) in the
current file. Section names and floating-point symbols are not
allowed.
The
XREF
directive declares the scope of the symbol
symbol
to be external. This
is necessary when a locally referenced symbol is defined in another source file.
Failure to declare such a symbol to have external scope results in an error (see
also
-E
flag).
The
.S
qualifier is used to indicate that the symbol(s) can be referenced with the
absolute short addressing mode. The optional section number is ignored; it is
recognized only for Motorola compatibility.
Examples
XREF base,init,input
XREF.S proc1
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