commit d99255362ca1ede7e30c14ea657082caa60de09c
author Jerome Forissier <jerome.forissier@linaro.org> Tue Aug 23 12:31:46 2022 +0000
committer Jérôme Forissier <jerome@forissier.org> Mon Aug 29 09:49:33 2022 +0200
tree 566094213b18bebd6f2446b61a9589858e4e8807
parent 2f4d97e7664270c92f4fd9d35fcddcfa4fd5f667

arm32: libutils, libutee, ta: add .note.GNU-stack section to .S files

When building for arm32 with GNU binutils 2.39, the linker outputs
warnings when linking Trusted Applications:

 arm-unknown-linux-uclibcgnueabihf-ld.bfd: warning: utee_syscalls_a32.o: missing .note.GNU-stack section implies executable stack
 arm-unknown-linux-uclibcgnueabihf-ld.bfd: NOTE: This behaviour is deprecated and will be removed in a future version of the linker

We could silence the warning by adding the '--no-warn-execstack' option
to the TA link flags, like we did in the parent commit for the TEE core
and ldelf. Indeed, ldelf always allocates a non-executable piece of
memory for the TA to use as a stack.

However it seems preferable to comply with the common ELF practices in
this case. A better fix is therefore to add the missing .note.GNU-stack
sections in the assembler files.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>