ST20 STMICROELECTRONICS [STMicroelectronics], ST20 Datasheet
ST20
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ST20 Summary of contents
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... Analysis of block execution frequency. Analysis of processor idle time. Analysis of processor utilization. DESCRIPTION The ST20 ANSI C Toolset provides a complete high quality software development environment for the ST20 microcontroller and microprocessor. The compiler supports the full ANSI C language definition and includes both local and global optimizing features. ...
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... ST20 Toolset product components 6.1 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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... Introduction The ST20 ANSI C Toolset provides a complete high quality software development environment for the ST20 microprocessor. The compiler supports the full ANSI C language definition and includes both local and global optimizing features. The run-time library includes both standard C functions, supported by host target connections, and ST20 specific functions to facilitate real-time, multi-tasking and embedded control operations ...
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... Code building tools The ST20 ANSI C Toolset provides a complete C cross-development system for the ST20. It can be used to build single task and multi-tasking programs for the ST20. Programs developed with the toolset are both source and binary compatible across all host development machines. ...
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... ANSI conformance The ST20 ANSI C Toolset supports the full standard language as defined in X3.159-1989. The compiler passes all the tests in the validation suites from Plum Hall and Perennial. 2.2.3 Local optimized code generation The compiler implements a wide range of local code optimization techniques ...
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... The toolset has been designed to support the development of embedded applications. The features include the ability to place code and data at particular places in memory, being able to access the ST20 instruction set efficiently from C, and to reduce the C run-time overhead to suit the application. 2.3.1 Placing code and data At configuration level, a program consists of its code, stack, static and heap segments ...
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... ANSI good language for writing embedded applications, since it combines the constructs of a high level programming language with low level access to the hardware through assembler inserts. To make the access to some of the ST20 instructions even more effective, a number of special library functions have been defined which the optimizing compiler can render as in-line code. This removes the overhead of a library call, but it also gives the optimizer more information on what the program is doing ...
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... Library support is supplied for trap handlers and ST20450 interrupt handlers. This allows trap handlers and ST20450 interrupt handlers to be written in C which will use the on-chip trap handling and interrupt handling support. Interrupt handlers for other ST20 variants may be based on the provided libraries ...
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... The host debugger program is asynchronous and holds a copy of the last stopped state of each thread, so values may be inspected by the host while the user program is running on the ST20. Multiple debugging windows may be opened to view different parts of the program simultaneously. ...
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... ST20–SWC File Execution Events Simple Boot file app.btl /user/inquest/examples/app_c/app.cfs Continue Interrupt 1 ST20_4 (memory=1M, memstart = 0x80000140) Single connect Single.link[0] to host process (interface(input HostIn, output HostOut input FromHost; 10 output ToHost 11 12 connect Simple.HostIn to FromHost; 13 connect Simple.HostOut to ToHost use ” ...
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... Processor: Single Type: ST20 Figure 8 Displaying memory contents on X-Windows ChanOutInt(outfeed, 0); Memory: 2048k ST20–SWC ...
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... Figure 9 Interactive debugger architecture The interactive debugger consists of a host-based symbolic debugger and a target-resident debug- ging kernel that is configured into the application program on an ST20 processor. The interactive debugger provides the following features:– A break point facility that can be used on particular threads of execution. ...
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... The post-mortem debugger provides the following features:– A source and object browser to select a process, a thread and source code. Commands to print the values of variables and display memory. A simple interpreter to enable C aggregate types (i.e. structures and arrays displayed. Creation of dump files. Debugging from a dump file. ST20–SWC 13/21 ...
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... ST20–SWC 4 Execution analysis tools Three profiling tools are supplied for analyzing the behavior of application programs; the execution profiler, the utilization monitor, and the test coverage and block profiling tool. The monitoring data is stored in the target processor ’s memory, so the profiling tools have little execution overhead on the application ...
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... Figure 12 Example test coverage summary report The following is an example of the contents of a coverage file: |/* | * facs generate factorials | * | */ | |#include <stdio.h> |#include <stdlib.h> |#include <process.h> |#include <channel.h> |#include <misc.h> |#include ”comms.h” | |#define TRUE 1 |#define FALSE 7.680 11.520 15.360 19.200 ST20–SWC 23.040 26.880 30.720 34.560 15/21 ...
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... ST20–SWC | /* | | | | |int factorial(int > return ( n * factorial(n–1)); | else 22 | return (1 |int main Channel *in, *out; | int going = TRUE get_param(1); | out = get_param(2 while (going int n, tag tag = read_chan (in, &n); | switch (tag ###################### # Summary of results # ###################### Source file : facs.c Number of runs : 1 Processors : All > ...
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... Link Target irun gateway gateway ST20–SWC Target hardware Clients 17/21 ...
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... ST20–SWC 5.3 AServer features This type of architecture offers a number of advantages: 1 The AServer handles multiple services. A number of services may be available on one device, handled by a single gateway. For example, new services may be added without modifying a standard server. 2 The AServer handles multiple clients. Any process on any processor in the target hardware may open a connection to any service. ...
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... Operating requirements 6.4.1 Sun-4 Toolset The Sun-4 ST20 Toolset package will run on a Sun-4 SPARC-based workstation, server or compat- ible, running SunOS 4.1.3 or Solaris 2.4 or later. To support the graphical user interface, the environ- ment must include an X Window System server (X11R4 or later) such terminal or SPARCsta- tion running OpenWindows 3 ...
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... ST20–SWC 6.4.2 PC Toolset The PC ST20 Toolset will run on an IBM 386 PC or IBM 486 PC or compatible, running MS-DOS 5.0 or compatible. To support the graphical user interface, the environment must include Microsoft Windows 3.1. The PC Toolset is designed to operate in conjunction with any of the following hardware development systems or compatible hardware: a ST20 Evaluation Board using the PC parallel port ...
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... OSF/Motif is a trademark of the Open Software Foundation, Inc. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. X Window System is a trademark of MIT. Windows is a trademark of Microsoft Corporation. ST20–SWC 21/21 ...