This patch removes the define_constants from avr.md:
SREG_ADDR, SP_ADDR, RAMPZ_ADDR.
The constants were not used in md directly and didn't take care of
afr_offset between RAM and I/O address.
The replacement is a new structure avr_addr that holds RAM addresses
of respective SFRs and takes into account avr_current_arch->sfr_offset.
sfr_offset is the same for all architectures, but that may change in
the future.
Tested without regression.
Ok for trunk?
In the struct avr_addr_t is there any reason why you didn't want to have
the low and high bytes of the stack pointer in a union with the full
stack pointer?
What would be the purpose of such a union?
Removing the .sp = .sp_l sugar? If so, then removing one of them
altogether is the clearest approach, imo.
Johann
