NCS QEMU Testing not exiting

Question

I would like to automate some unit tests with NCS. I tried running the native_posix qemu builds, however, this does not support the mac m1 architecture (maybe Linux only?). 
 qemu_x86 works, but it sits in an infinite loop. I want to automate the tests to stop the production build on test errors. 
 1. Perhaps there is an exit command I can add for the the qemu_x86? I see the posix_exit(ret); for the native_posix builds 
 2. Bablesim looks really interesting, but I think that is Linux only. 
 3. Perhaps I should be looking elsewhere for unit testing rather than qemu with NCS? Any suggestions? 
 My other thought is to run these in a docker container, but I would rather not need to do this. 
 Thanks!

LukeC · Accepted Answer

Here is the way to exit Qemu with a debug exit instruction 
 Run qemu with 
 
 -device isa-debug-exit,iobase=0xf4,iosize=0x04 
 
 qemu-system-x86_64 -nographic -serial mon:stdio -kernel build_qemu/zephyr/zephyr.elf -device isa-debug-exit,iobase=0xf4,iosize=0x04 
 Use this function to write to the exit iobase: 
 
 void dbg_io_write_8(uint16_t port, uint8_t val)
{
	__asm__ volatile("outb %0, %1" :: "a" (val), "Nd" (port));
}

dbg_io_write_8(0xF4, 0x4);

NCS QEMU Testing not exiting

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