Ports

General Comments

The QP/C++ framework can be easily adapted to various operating systems, processor architectures, and compilers. Adapting the QP/C++ software is called porting, and the QP/C++ framework has been designed from the ground up to make porting easy.

The QP/C++ distribution contains many QP/C++ ports, which are organized into the three categories:

• PC-Lint-Plus (generic C compiler) QP/C++ "port" to the PC-Lint Plus static analysis tool (a "compiler")
• Native Ports adapt QP/C++ to run on bare-metal processors "natively", using one of the built-in kernels (QV, QK, or QXK)
• 3rd-Party RTOS Ports adapt QP/C++ to run on top of a 3rd-Party Real-Time Operating System (RTOS)
• General-Purpose OS Ports adapt QP/C++ to run on top of a General Purpose Operating System (GPOS), such as Linux or Windows.

Code Structure

All QP/C++ ports are located in sub-directories of the ports/ top-level directory, with the hierarchical organization outlined below:

qpc|qpcpp/               // QP/C or QP/C++ installation directory
+---ports/               // ports directory
|   |
|  [1a]-arm-cm/          // ports for ARM Cortex-M
|   |   +---qk/              // ports for preemptive QK kernel
|   |   |   +---armclang/    // port with ARM-Clang (Compiler Version 6) toolchain
|   |   |   +---gnu/         // port with GNU-ARM toolchain
|   |   |   +---iar/         // port with IAR toolchain
|   |   +---qv/      // ports for non-preemptive QV kernel
|   |   \---qxk/     // ports for dual-mode QXK kernel
|   |
|  [1b]-arm-cr/          // ports for ARM Cortex-R
|  . . .
|   |
|  [2a]-embos/           // ports for embOS (3rd-party RTOS)
|   |
|  [2b]-freertos/        // ports for FreeRTOS (3rd-party RTOS)
|  . . .
|   |
|  [3a]-posix/           // port to POSIX (multithreaded)
|   |
|  [3b]-posix-qv/        // port to POSIX (single-threaded)
|   |
|  [4a]-win32/           // port to Win32 (multithreaded)
|   |
|  [4b]-win32-qv/        // port to Win32 (single-threaded)

[1a-b] Native Ports are located in sub-directories named after the CPU architecture, such as arm-cm for ARM Cortex-M or arm-cr for ARM Cortex-R. Under that directory, the sub-directories qk and qv contain ports for the QK and QV kernels, respectively.

[2a-b] Ports for 3rd-party RTOS are located in sub-directories named after the RTOS, such as embos for embOS RTOS or freertos for FreeRTOS.

[3a-b] Ports for the POSIX OS Standard are located in sub-directories named posix for the POSIX API (multi-threaded variant) and posix-qv for the POSIX API (single-threaded) variant.

[4a-b] Ports for the Win32 API are are located in sub-directories named win32 for the Win32 API (multi-threaded variant) and win32-qv for the Win32 API (single-threaded) variant.

Note

Because the QP distribution contains all ports, the number of sub-directories and files in the ports folder may seem daunting. However, knowing the structure of the ports folder, you can simply delete the sub-directories that are not relevant to you.

PC-Lint-Plus