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, LSI, ZSP, ZSP400, ZSP500, ZSP600, LSI402Zx, LSI403LP

Embedded Software Development Tools
for LSI ZSP™ Family

ZSP Development Tools

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

Optimizing C Compiler
ANSI C
K&R C
Over 100 Advanced Optimizations
Inline Assembly
ELF/DWARF Output

MULTI® Integrated Development Environment
Source Level Debugger
Graphical Project Builder
Text Editor
Version Control System
Performance Profiler
Run-Time Error Checking
Code Coverage
DSP Data Visualization

Processors Supported

ZSP400 Core
ZSP500 Core
ZSP600 Core
LSI402ZX
LSI403LP

ZSP Optimizing C Compiler

The Optimizing C Compiler for ZSP utilizes Green Hills' global target independent optimizer along with architecture specific optimizations. Each supported ZSP model has its own particular instruction set characteristics.

Processor Options - One option for each supported ZSP model. This setting determines the instructions permitted.

Constant Data Section - Places all string literals, constants, and initialized variables declared const in C in a distinct section.

Far Calls to Function - Loads address of a function into a register and branches through it. This handles code that exceeds the limits of the ZSP call instruction.

Link Register Support - The ZSP link registers are used as addresses, reducing the latency between loads and uses.

Software Pipelining - The ZSP Compiler supports software pipelining optimization on loops with both constant and variable bounds. The Compiler detects when software pipelining will decrease the per-iteration cycle count, and performs the optimization. The Software Pipelining optimizations work along with the ZSP Instruction Scheduler, which is aware of all ZSP grouping rules.

LSI Intrinsic Functions - The ZSP Compiler supports a large number of intrinsic functions to allow the user finer control over fractional arithmetic. The intrinsic functions are recognized by the Compiler, and ZSP code, often a single instruction, is inlined. The resulting instructions can be fully optimized by the compiler.