Green Hills, GHS, MULTI, 2000, C, C++, ADA, Ada95, Fortran, Compiler, Simulator, Debugger, RTOS, Velocity, Integrity, BDM, Target Probe, Event Analyzer, TimeMachine, Run Time Analysis, Embedded, Renesas, Hitachi, SH1, SH2, SH2A, SH2-DSP, SH3, SH3-DSP, SH4

Embedded Software Development Tools - SH Family

SH Development Tools

Green Hills Software provides a comprehensive set of development tools for SH-based applications:

Optimizing Compilers

C++

Embedded C++ (EC++)

Run-Time Libraries

MULTI® Integrated Development Environment
Source Level Debugger
Graphical Project Builder
Text Editor
Version Control System
Graphical Browser
Performance Profiler*
Run-Time Error Checking
RTOS EventAnalyzer
Remote Target Connection

Real-Time Operating System Support
Express Logic's ThreadX^® RTOS

Green Hills Probe Processors Supported
	SH1 SH2 SH2A SH2-DSP SH3 SH3-DSP SH4

SH Optimizing Compilers

The Green Hills Optimizing Compilers for SH all utilize a common code generator with architecture-specific optimizations. Each supported SH model has its own particular optimization and instruction set characteristics. In addition for the SH-2A architecture, Green Hills offers CodeFactor®, a link-time optimization that reduces overall program size by identifying and removing redundant segments of code from object files. In certified EEMBC benchmarks, CodeFactor reduced code size an additional 10%. These are accommodated in the code generator to produce code best suited for the target processor. The Green Hills SH Optimizing Compilers support the following SH-specific features:

	Processor - One option for each supported SH model. This setting determines the instructions permitted, as well as the pipeline optimization strategy used.
	Position Independent Code (PIC)- Allows executable files and data to be placed anywhere in memory and still run correctly.
	Little Endian - Causes programs to be compiled and assembled using a little-endian memory model (the default is big-endian).
	All Floating Point is single precision - This option will cause "double" to be interpreted as "float" so no 64-bit instructions will be required for floating point operations.
	Disable use of MACH, MACL, and GBR by compiler - Prevents the compiler from using the MACH, MACL, or GBR registers as general purpose, permanent registers.
	Large switch statements - Allows large switch statements by forcing the compiler to use a 32-bit offset, which works regardless of the destination label.
	Small Data Area - The SH processor requires a literal pool entry to compute an arbitrary 32-bit address. The Green Hills compilers enable the user to collect frequently accessed variables into a block of memory, accessible via offsets from the GBR register, instead of requiring a pool entry thereby saving code size and improving performance.

Source Level Support/Extensions for SH-DSP
C and C++ programmers can take advantage of the parallel memory access and fixed point instructions and registers provided by the SH-DSP by using the special DSP features supported by the Green Hills C/C++ compilers, including:

X and Y Parallel Memory Access

Zero Overhead Loops

Fixed Point Data Type Class Support in C++