Hello,
I am currently working on defining records to describe memory-mapped registers on the Raspberry Pi's arm/aarch64 processor. It is painful and brittle to do this in Pascal. Recent versions of Ada/GNAT allow one to define both field location and byte-order in a record representation clause. Has there been any discussion of extending fpc to allow this? Has a syntax been discussed? I looked on the future list and did not see anything related.
Thanks,
Dave

I am currently working on defining records to describe memory-mapped registers on the Raspberry Pi's arm/aarch64 processor. It is painful and brittle to do this in Pascal. Recent versions of Ada/GNAT allow one to define both field location and byte-order in a record representation clause.

Some short code examples that show what you are trying to do would be helpful.

ARM is little endian, does that differ from the byte-order of some registers?

Some relevant discussions:
https://forum.lazarus.freepascal.org/index.php/topic,46017.0.html https://forum.lazarus.freepascal.org/index.php?topic=49492.0 https://forum.lazarus.freepascal.org/index.php/topic,19107.msg113485.html#msg113485