68K Embedded Software Solution
Green Hills Software provides a comprehensive solution for developing
- Quickly develop, thoroughly debug, completely test, and fully
optimize embedded and real-time applications
- Green Hills® optimizing compilers
Generate debuggable, highly optimized code for maximum speed
and minimum size from C, C++,
| 68K optimizing
The Green Hills
Optimizing Compiler for 68K uses a common code generator
with architecture-specific optimizations. Each supported processor
model has its own particular pipeline and instruction set characteristics.
These are accommodated in the code generator to produce code best suited
for the target processor. The following 68K specific features
- Use Built-in fp Functions—Uses built-in floating point
instructions rather than calling library functions such as fabs(),
sqrt(), and sin().
- Position Independent Code (PIC) and Data (PID)—Allows
code and data to be created which can be placed anywhere in memory
and still run correctly.
- Small Data Area (SDA)—The Green Hills Compilers can
collect frequently accessed variables into a block of up to 64KB of
memory. This enables efficient access to data within this block resulting
in improved code size.
- Optimizing Assembler—Assembler will optimize branch
and call instructions to use the smallest possible displacement reducing
A comprehensive suite of run-time libraries for C, C++, EC++ and Ada
95 are included in the corresponding compiler distributions for each
language. Several different versions of the libraries are provided to
accommodate different combinations of processor and memory models. The
combinations include hardware vs. software floating point, big endian
vs. little endian memory models and CPU specific versions. Full featured
start-up code and libraries include automatic copy of data from ROM to
RAM and system call emulation.
|The MULTI integrated development environment
MULTI provides a host-based
(Windows, Solaris, or Linux) graphical environment for 68K target
development. Host-target connectivity is provided through a variety of
means, depending on the target environment. MULTI supports many 68K
targets, including evaluation boards from Freescale Semiconductor. These
boards can be accessed with a variety of interfaces:
- Bare Board Access (No RTOS or ROM Monitor)—Combined
with the Macraigor Wiggler, MULTI provides a complete software package
that enables programmers to debug code without need for operating systems,
kernels, or even ROM monitors.
- Custom RTOS Support—MULTI can
be interfaced with a custom RTOS through integration of the Green Hills
INDRT API. INDRT provides all the debug information needed by MULTI,
and is easily integrated into user code.
- Instruction Set Simulator—The MULTI instruction set
simulator interpretively executes 68K programs on the host PC
or workstation without the need for target hardware by simulating the
execution of the target processor at the instruction level. The simulator
provides full debug features, including host I/O, command window, extended
profiling and hardware breakpoints.