FUJITSU Semiconductor - Manual (Page 66)

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8-bit Proprietary F 2 MC-8L Family
Support Tools
F 2
MC-8LF
amily
Support tools
5. Cooperation
In cooperation with S OFTUNE Workbench, the following S OFTUNE components help improve the quality of C-language
programming, which greatly increases reviewing and documentation efficiency.
1) S OFTUNE
V3 C Checker
Designed to meet the following requests from beginners through to advanced users:
• Eliminate all coding mistakes.
• Review programs quickly and efficiently.
• Enable even C-language beginners to create quality code.
• Maximize coding skills.
• Use software assets on Fujitsu CPUs.
The S OFTUNE C Checker checks code for maintainability, methods of expanding specifications and transportability;
indicates areas where quality and performance could be improved, and reports these results to the user. The user
can then review the C-language code.
(1) Outline
Recently software for embedded microcontrollers has been developed in the C language. However, it is difficult to
understand the message output from a compiler unless the language specifications are well known.
This development support tool checks C-source programs to display and print advice for better quality and
performance. It also has a facility for selecting necessary advice carefully.
(2) Features
• Outputs advised to be suitable for these objectives: Portability, coding errorperformance, porting to Fujitsu
CPU’s.
• Allows customization according to the programmers level.
• Works with C compilers (fcc911/fcc911s, cc907/fcc907s, fcc896s) for Fujitsu microcontrollers (FR family, F
2 MC-
16 family, and F 2 MC-8L family).
• Provides easy operation and simple display over a GUI.
(3) Advising Function
The following pieces of advice are given. “Reason of check”, “Example of program”, “Suggestion of correction”, and
“One-point advice” are displayed and explained for each check item.
• Portability
This tool makes a close check on the items “processing-definded operation” and “undefined operation” which can
be problems in portability within the ANSI standard.
It also gives an explanation of the operation of C compilers (Fcc911, Fcc907 and Fcc896) for Fujitsu microcon-
trollers.
For example, the tool gives the user proper advice on many problems (such as a data type acceptable to a
structure, code, and its arrangement) at the time of porting.
• Coding error
This tool indicates the items which are not wrong in the language specifications but may cause an error and the
items which are logically inconsistent.
For example, the equivalent expression " if ( a==0 )" in the if statement is likely to be typed as the assignment
expression " if ( a=0 )" by mistake. Most compilers cannot detect such an error.
• Performance
This tool indicates the items generally providing better performance and the items essential and effective for the
FR family, F
2 MC-16 family and F 2 MC-8L family.
Stress is especially, put on the detection of object size reduction which can be a problem in software for
embedded microcontrollers.
For example, if a function return value is structure of the double type, an area is reserved for the return value and
an object which is to be transferred to the area is output.
This tool advises the user to transfer the function return value by a pointer and largely reduce the object size.
• Porting to Fujitsu CPU
This tool advises the user what to consider in porting exsting software from other makers’ CPU to Fujitsu CPU in
the FR family, F
2 MC-16 family and F 2 MC-8L family.
For example, in porting software resources created for the F 2 MC-16 family to the FR family, this tool advises the
user to delete the expansion specifications ( _ _ far, _ _ near, and _ _ direct etc. ) inherent to the F 2 MC-
16 family.