On 18.08.23 06:07, Huang, Kai wrote:
Could we use "used" attribute? https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html used This attribute, attached to a variable with static storage, means that the variable must be emitted even if it appears that the variable is not referenced. When applied to a static data member of a C++ class template, the attribute also means that the member is instantiated if the class itself is instantiated.
Thank you for pointing this out! I was not aware of this attribute, but it is indeed exactly what we need in this case and works as expected.
2. adding _attribute__((section(".data.encl_buffer"))) ensures that we can control the expected location at the start of the .data section. I think this is optional, as encl_buf always seems to be placed at the start of .data in all my tests. But afaik this is not guaranteed as per the C standard and such constraints on exact placement should better be explicitly controlled in the linker script(?)This looks sane.
Thanks, applying this in a separate commit as discussed. Best, Jo
