zephyr

Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.

bluetooth bluetooth-le embedded embedded-c iot mcu microcontroller real-time rtos zephyr zephyr-rtos zephyros

History

Keith Packard 0b90fd5adf samples, tests, boards: Switch main return type from void to int As both C and C++ standards require applications running under an OS to return 'int', adapt that for Zephyr to align with those standard. This also eliminates errors when building with clang when not using -ffreestanding, and reduces the need for compiler flags to silence warnings for both clang and gcc. Most of these changes were automated using coccinelle with the following script: @@ @@ - void + int main(...) { ... - return; + return 0; ... } Approximately 40 files had to be edited by hand as coccinelle was unable to fix them. Signed-off-by: Keith Packard <keithp@keithp.com>		2 years ago
..
src	samples, tests, boards: Switch main return type from void to int	2 years ago
CMakeLists.txt	…
README.rst	samples/boards/intel_adsp: Make sample work with twister	3 years ago
app.overlay	…
linker_xtensa_intel_adsp_cavs.ld	…
prj.conf	…
sample.yaml	tests: remove intel adsp cavs platforms from filters	2 years ago

README.rst

.. _intel_adsp_code_relocation:

Intel ADSP CAVS Code relocation
###############################

Overview
********

A simple sample that shows code relocation working for Intel ADSP CAVS
boards (v18 and v25). The interesting bit is the custom linker file.
As rimage (the tool used to sign the image) mandates that elf files
sections TEXT, DATA and BSS be contiguous, some work is done in the
linker script to ensure that.


Building and Running
********************

This application can be built and executed as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/hello_world
   :board: intel_adsp_cavs25
   :goals: build
   :compact:


Sample Output
=============

.. code-block:: console

    main location: 0xbe0105e4
    Calling relocated code
    Relocated code! reloc location 0xbe008010
    maybe_bss location: 0x9e004218 maybe_bss value: 0