Chapter 38. TIC54X Dependent Features

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.sslist

.ssnolist

Controls the inclusion of subsym replacement in the listing output. Ignored.

.string "string" [,...,"string_n"]

.pstring "string" [,...,"string_n"]

Place 8 bit characters from

string

into the current section.

.string

zero fills the upper 8 bits

of each word, while

.pstring

puts two characters into each word, filling the most significant

bits first. Unused space is zero filled. If a label is used, it points to the first word initialized.

[stag] .struct [offset]

[name_1] element [count_1]

[name_2] element [count_2]

[tname] .tag stagx [tcount]

...

[name_n] element [count_n]

[ssize] .endstruct

label .tag [stag]

Assign symbolic offsets to the elements of a structure.

stag

defines a symbol to use to reference

the structure.

offset

indicates a starting value to use for the first element encountered; otherwise

it defaults to zero. Each element can have a named offset,

name

, which is a symbol assigned the

value of the element's offset into the structure. If

stag

is missing, these become global symbols.

count

adjusts the offset that many times, as if

element

were an array.

element

may be one of

.byte

,

.word

,

.long

,

.float

, or any equivalent of those, and the structure offset is adjusted

accordingly.

.field

and

.string

are also allowed; the size of

.field

is one bit, and

.string

is considered to be one word in size. Only element descriptors, structure/union tags,

.align

and conditional assembly directives are allowed within

.struct

/

.endstruct

.

.align

aligns

member offsets to word boundaries only.

ssize

, if provided, will always be assigned the size of

the structure.

The

.tag

directive, in addition to being used to define a structure/union element within a struc 

ture, may be used to apply a structure to a symbol. Once applied to

label

, the individual struc 

ture elements may be applied to

label

to produce the desired offsets using

label

as the structure

base.

.tab

Set the tab size in the output listing. Ignored.

[utag] .union

[name_1] element [count_1]

[name_2] element [count_2]

[tname] .tag utagx[,tcount]

...

[name_n] element [count_n]

[usize] .endstruct

label .tag [utag]

Similar to

.struct

, but the offset after each element is reset to zero, and the

usize

is set to the

maximum of all defined elements. Starting offset for the union is always zero.