Hello Richard, Am 23.06.2013 um 22:21 schrieb Richard Sandiford <rdsandif...@googlemail.com>:
> "Jürgen Urban" <juergenur...@gmx.de> writes: >> >> In the native PS2SDK (i.e. no Linux) I detected that there are undefined >> references to `__fixtfsi', `__floatsitf', `__subtf3', `__multf3', >> __extenddftf2', `__lttf2' and `__gttf2'. These are the functions for >> handling "long double". >> There is a fix needed for this in libgcc. I attached 2 patches to this >> e-mail. There should be only one of the patches used to fix this. >> The first one fixes the problem for all mips systems. The second one >> fixes this only for r5900. I think it is a general problem. I assume the >> undefined references could appear on all mips64 systems which are not >> Linux. So the first patch should be applied. > > The second patch is right. Not all targets have 128-bit long doubles, > so t-tpbit is intentionally an opt-in rather than opt-out thing. > > E.g. mips*-sde-elf and mips*-mti-elf both use: > > #undef LONG_DOUBLE_TYPE_SIZE > #define LONG_DOUBLE_TYPE_SIZE 64 > > to get a form of n32 in which long doubles are the same as doubles. > > Do you want to stick with 128-bit long doubles for PS2, or would you > prefer to do what SDE does? I prefer shorter long doubles because of the performance impact. For 32 bit hard float we may need it. Can you change it or do I need to submit a patch? Best regards Jürgen
