Texas Instruments TMS320C54x, User Manual

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Glossary
E-7 Glossary
ROM width: The width (in bits) of each output file, or, more specifically, the
width of a single data value in the file. The ROM width determines how
the utility partitions the data into output files. After the target words are
mapped to memory words, the memory words are broken into one or
more output files. The number of output files is determined by the ROM
width.
run address: The address where a section runs.
S
section: A relocatable block of code or data that will ultimately occupy con-
tiguous space in the TMS320C54x memory map.
section header: A portion of a COFF object file that contains information
about a section in the file. Each section has its own header; the header
points to the section’s starting address, contains the section’s size, etc.
section program counter: See
SPC.
sign extend: To fill the unused MSBs of a value with the value’s sign bit.
simulator: A software development system that simulates TMS320C54x
operation.
source file: A file that contains C code or assembly language code that will
be compiled or assembled to form an object file.
SPC (Section Program counter): An element of the assembler that keeps
track of the current location within a section; each section has its own
SPC.
static: A kind of variable whose scope is confined to a function or a program.
The values of static variables are not discarded when the function or pro-
gram is exited; their previous value is resumed when the function or pro-
gram is re-entered.
storage class: Any entry in the symbol table that indicates how to access
a symbol.
string table: A table that stores symbol names that are longer than 8 charac-
ters (symbol names of 8 characters or longer cannot be stored in the
symbol table; instead, they are stored in the string table). The name por-
tion of the symbol’s entry points to the location of the string in the string
table.
structure: A collection of one or more variables grouped together under a
single name.