[PATCH] Handle crazy mips 64 little endian case.

[Rafael Espíndola]

On 22 April 2013 09:28, Richard Sandiford <rsandifo at linux.vnet.ibm.com> wrote:
> Rafael Ávila de Espíndola <rafael.espindola at gmail.com> writes:
>> +    // Mip64 little endian has a "special" encoding of r_info. Instead of one
>> +    // 64 bit little endian number, it is a little ending 32 bit number followed
>> +    // by a 32 bit big endian number.
>
> A bit pedantic, sorry, but it's more accurate to say that, on both big
> and little endian n64, what generic ELF64 calls r_info is instead a
> 32-bit symbol index (r_sym) followed by 4 byte fields (r_ssym, r_type3,
> r_type2, r_type).  It's just that the code is choosing to represent all
> 5 fields as a single 64-bit integer.

Well, calling this a "mips endian" has the big advantaged that we can
patch it in exactly one place in the llvm codebase. If we were to
instead have the notion of "mips ELF" with other fields instead of
r_info, many more places would have to be updated.

> Richard
>

Cheers,
Rafael