AN QP and ARM7/9 - Quantum Leaps

Table of Contents
1 Introduction........................................................................................................................................1
1.1 About QP..........................................................................................................................................2
1.2 About the ARM Port.............................................................................................................................2
1.3 Licensing QP .......................................................................................................................................3
2 Directories and Files .........................................................................................................................4
2.1 Building the QP Libraries.....................................................................................................................5
2.2 Building the Examples .........................................................................................................................6
3 The Vanilla Port..................................................................................................................................7
3.1 Compiler Options Used........................................................................................................................7
3.2 The QF Port Header File .....................................................................................................................7
3.2.1 The QF Critical Section................................................................................................................7
3.2.2 Discussion of the QF Critical Section ........................................................................................10
3.3 Handling Interrupts ............................................................................................................................11
3.3.1 The IRQ “Wrapper” Function in Assembly.................................................................................12
3.3.2 The FIQ “Wrapper” Function in Assembly .................................................................................15
3.3.3 Other ARM Exception “Wrapper” Functions in Assembly .........................................................17
3.3.4 Defining The BSP_irq() C-level IRQ Handler ............................................................................19
3.3.5 The C-level ISRs........................................................................................................................20
3.3.6 Defining The BSP_fiq() C-level IRQ Handler.............................................................................20
3.3.7 Initializing the Vector Table and the Vectored Interrupt Controller............................................21
3.4 Idle Loop Customization in the “Vanilla” Port ....................................................................................22
4 The QK Port......................................................................................................................................23
4.1 Compiler and Linker Options Used....................................................................................................23
4.2 The QK Port Header File ...................................................................................................................23
4.2.1 The QK Critical Section .............................................................................................................23
4.3 Handling Interrupts ............................................................................................................................23
4.3.1 The IRQ “Wrapper” Function for QK..........................................................................................24
4.3.2 The FIQ “Wrapper” Function for QK ..........................................................................................26
4.4 Idle Loop Customization in the QK Port ............................................................................................28
5 Controlling Placement of the Code in Memory and ARM/THUMB Compilation........................29
6 References .......................................................................................................................................30
7 Contact Information.........................................................................................................................31
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