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Chapter 38. TIC54X Dependent Features

[symbol] .usect "section_name", size, [,[blocking_flag] [,alignment_flag]]

Reserve space for variables in a named, uninitialized section (similar to .bss).

.usect

allows

definitions sections independent of .bss.

symbol

points to the first location reserved by this

allocation. The symbol may be used as a variable name.

size

is the allocated size in

words.

blocking_flag

indicates whether to block this section on a page boundary (128

words) (Section 38.2 Blocking).

alignment flag

indicates whether the section should be

longword aligned.

.var sym[,..., sym_n]

Define a subsym to be a local variable within a macro. See Section 38.10 Macros.

.version version

Set which processor to build instructions for.

541

542

543

545

545LP

546LP

548

549

Although these values are accepted, the op is ignored.

38.10. Macros

Macros do not require explicit dereferencing of arguments (i.e. \ARG).

During macro expansion, the macro parameters are converted to subsyms. If the number of arguments

passed the macro invocation exceeds the number of parameters defined, the last parameter is assigned

the string equivalent of all remaining arguments. If fewer arguments are given than parameters, the

missing parameters are assigned empty strings. To include a comma in an argument, you must enclose

the argument in quotes.

The following built in subsym functions allow examination of the string value of subsyms (or ordinary

strings). The arguments are strings unless otherwise indicated (subsyms passed as args will be replaced

by the strings they represent).

$symlen(

str

)

Returns the length of

str

.

$symcmp(

str1

,

str2

)

Returns 0 if

str1

==

str2

, non zero otherwise.

$firstch(

str

,

ch

)

Returns index of the first occurrence of character constant

ch

in

str

.