Boris Boesler writes: > Ok, so what have I to do to write a back-end where all addresses are > given in bits? Memory is addressed in bits, not bytes. So I set: > > #define BITS_PER_UNIT 1 > #define UNITS_PER_WORD 32
I don't know if it's useful to define the size of a byte to be less than 8-bits, even if that more accurately reflects the hardware. Standard C requires that the char type both be at least 8 bits (UCHAR_MAX >= 256) and the same size as a byte (sizeof(char) == 1). You can't define any types that are smaller than a char and have sizeof work correctly. >So, what can I do to get this running for my architecture? If you think there's still some benefit from having GCC use a 1-bit byte, you'll probably have to fix a number of assumptions made in the code. Things like that the size of a byte is at least 8 bits and is the same in frontend and backend. Ross Ridge