-msym32 changes DWARF's address_size from 64 bits to 32 bits. This means that while symbols are 64-bit (due to ELF64), target addresses in the debug info are 32-bit.
There is support for this in DWARF of course in fact you can specify different address_size for each compilation unit which nicely maps with -msym32 being link-compatible with regular N64 objects. However, this asymmetry exposed several bugs in binutils. Also, as I just discovered today, dwarfdump (libdwarf) has no support for changing the address_size between compilation units and in fact derives address_size from the ELF class (ELF64/ELF32). (Obviously, that's a bug in libdwarf.) So my question is whether the saving in the size of the debug info with -msym32 is really worth the trouble here or should we just start generating 64-bit addresses with -msym32? Adam
