User`s manual

1-2 Suite56 DSP Tools User’s Manual Motorola
Compilers
1.1 Compilers
Motorola recommends purchase of the Tasking C compiler for the DSP56300 and
DSP56600 families of digital signal processors. Motorola markets the m568c C compiler
for the DSP56800 family. Alternatively, Motorola distributes enhanced versions of the
ANSI-compliant GNU C compiler. These compilers are specific to families of Motorola
devices; that is, the g563c is an optimizing C compiler for the DSP56300 family of
devices, and the g566c for the DSP56600 family. There is no GNU C Compiler for the
DSP56800 Family. From its website, Motorola distributes these enhanced, optimizing,
GNU C compilers along with device-specific utilities, such as preprocessors, to give you
greater control over the runtime environment. Each of those optimizing, family-specific
C compilers implements the C programming language according to ANSI X3.159-1989.
The Suite56 C preprocessor that Motorola distributes also conforms to an ANSI standard.
It facilitates inclusion of arbitrary text files, supports conditional compilation, allows
macro definition and expansion. In fact, as an independent program, the preprocessor may
be used as a general purpose macro preprocessor.
Figure 1-2. Compiling by Default or with the Option -c
By default, when you compile a C program with the Suite56 compiler, it silently calls the
assembler and then the linker to produce executable object code, as in Figure 1-2. If your
project can be contained in a straightforward C source file that does not require linking to
external libraries or other object files, then default compilation offers you a streamlined
path to project development. In contrast, if you choose the option
-c, then the compiler
silently calls only the assembler, to produce object files that must be explicitly linked.
simulator
linker
hardware debugger
compiler
default compilation
option -c