Renesas Emulator System M3T-MR100 User Manual

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Contents

Requirements for MR100 Use ......................................................................................................................................i

Document List...............................................................................................................................................................i

Right of Software Use...................................................................................................................................................i

Contents............................................................................................................................................................. iii

List of Figures ................................................................................................................................................. viii

List of Tables ..................................................................................................................................................... xi

User’s Manual Organization................................................................................................................... - 1 -

General Information ............................................................................................................................... - 3 -

2.1

Objective of MR100 Development...................................................................................................... - 3 -

2.2

Relationship between TRON Specification and MR100................................................................... - 5 -

2.3

MR100 Features ................................................................................................................................. - 6 -

Introduction to Kernel ............................................................................................................................ - 7 -

3.1

Concept of Real-time OS .................................................................................................................... - 7 -

3.1.1

Why Real-time OS is Necessary ................................................................................................. - 7 -

3.1.2

Operating Principles of Kernel................................................................................................. - 10 -

3.2

Service Call ....................................................................................................................................... - 14 -

3.2.1

Service Call Processing ............................................................................................................. - 15 -

3.2.2

Processing Procedures for Service Calls from Handlers......................................................... - 16 -

Service Calls from a Handler That Caused an Interrupt during Task Execution............................................. - 17 -

Service Calls from a Handler That Caused an Interrupt during Service Call Processing................................ - 18 -

Service Calls from a Handler That Caused an Interrupt during Handler Execution ....................................... - 19 -

3.3

Object................................................................................................................................................. - 20 -

3.3.1

The specification method of the object in a service call .......................................................... - 20 -

3.4

Task ................................................................................................................................................... - 21 -

3.4.1

Task Status ................................................................................................................................ - 21 -

3.4.2

Task Priority and Ready Queue ............................................................................................... - 25 -

3.4.3

Task Priority and Waiting Queue............................................................................................. - 26 -

3.4.4

Task Control Block(TCB) .......................................................................................................... - 27 -

3.5

System States.................................................................................................................................... - 28 -

3.5.1

Task Context and Non-task Context ........................................................................................ - 28 -

3.5.2

Dispatch Enabled/Disabled States ........................................................................................... - 30 -

3.5.3

CPU Locked/Unlocked States ................................................................................................... - 30 -

3.5.4

Dispatch Disabled and CPU Locked States............................................................................. - 30 -

3.6

Regarding Interrupts........................................................................................................................ - 31 -

3.6.1

Types of Interrupt Handlers ..................................................................................................... - 31 -

3.6.2

The Use of Non-maskable Interrupt ........................................................................................ - 31 -

3.6.3

Controlling Interrupts............................................................................................................... - 32 -

3.7

Stacks ................................................................................................................................................ - 34 -

3.7.1

System Stack and User Stack................................................................................................... - 34 -

Kernel .................................................................................................................................................... - 35 -

4.1.1

Module Structure....................................................................................................................... - 35 -

4.1.2

Module Overview....................................................................................................................... - 36 -

4.1.3

Task Management Function ..................................................................................................... - 37 -

4.1.4

Synchronization functions attached to task ............................................................................ - 39 -

4.1.5

Synchronization and Communication Function (Semaphore)................................................ - 43 -

4.1.6

Synchronization and Communication Function (Eventflag) .................................................. - 45 -

4.1.7

Synchronization and Communication Function (Data Queue) .............................................. - 47 -