/tmp/ccTlcyeD.s:242: Error: Unrecognized Symbol type " "

[saad-abdullah62]

Hi, I am trying to add support for zedboard and zynq7000 SOC. While compiling sample/hello_world for Cortex A processors using ARM Embedded GNU i get assembler message Error:Unrecognized Symbol type " " . I tried to used aarch64 toolchain in zephyr sdk and it works for cortex-a53 and cortex-a72. But since i need to use cortex-a9 which is not included for -mtune option in aarch64 so i am using ARM Embedded GNU to built application.

To Reproduce
Steps to reproduce the behavior:

1. Add ARM EMBEDDED toolchain as cross-compiler
2. cd sample/hello_world, mkdir build; cd build
3. cmake -DBOARD=qemu_cortex_a53
4. make
5. See error

Environment (please complete the following information):

• OS: ( Linux(Ubuntu 18.04))
• Toolchain (ARM Embedded)

[carlescufi]

This might be a crlf issue. What is your core.autocrlf in .gitconfig?

[saad-abdullah62]

I used git config --global core.autocrlf to set core.autrocrlf to input. But still getting same error

[saad-abdullah62]

Another thing it builds application for Cortex M processors correctly.

[carlescufi]

Try setting it to auto:

git config --global core.autocrlf true

and then run west init and west update` from scratch.

[saad-abdullah62]

I tried above solution but there is no effect. I am getting same results as before.

[galak]

As you are looking to support a 32-bit Cortex-A core you need to configure the compiler correctly for this. @carlocaione or @npitre can probably comment on what needs to be done.

This is not a bug as we don't support any current 32-bit Cortex-A core or SoC and thus it would be new functionality.

[npitre]

The Cortex-A9 is much more similar to a Cortex-M than Cortex-A53 or any
Aarch64 variations. Adjustments to the aarch32 code would also be needed
as this is currently unsupported.

The compiler to use from the Zephyr SDK would be arm-zephyr-eabi with
appropriate flags. The aarch64-zephyr-elf version won't work.

[saad-abdullah62]

The error was because i kept my ARM v7 A configuration options in aarch 64 inside core. I added them to Kconfig file given for Cortex R processors and i was able to compile. But now i have other errors.
I have to add support for Cortex A9 but i don't have much knowledge about zephyr. I went through documentation and understood board and SOC porting guides. But i can't find any guide to port zephyr on new CPU core. I see many assembly and header files for every core e.g. for Cortex M, for Cortex R and for ARM 64 but don't know where they come from or which one should i add fro Cortex A9. So Any Suggestions or hints about where to start will be appreciated.