4c5f35b0e3
Add support for the [Zephyr Usermode](https://docs.zephyrproject.org/latest/kernel/usermode/index.html) to the Zephyr port. The following changes are applied: - Fix `signbit`, check if it is defined already and only implement it, if not - Introduce `sys_mutex` and `sys_sem` in favour of `k_mutex` and `k_sem`, when `CONFIG_USERMODE` is enabled - Remove the installation of the `_stdout_hook_iwasm()` when `CONFIG_USERMODE` is enabled, otherwise this causes MPU errors since the std hook is in the kernel space - Add a thread name for debugging
This folder contains the platform abstract layer for multiple platforms. To support a new platform, you can simply create a new folder here and implement all the APIs defined in include folder.
Refer to port_wamr.md for how to port WAMR to a target platform.