Hello Richard, Am 25.06.2013 um 23:24 schrieb Richard Sandiford <rdsandif...@googlemail.com>:
> Jürgen Urban <juergenur...@gmx.de> writes: >> Am 23.06.2013 um 22:21 schrieb Richard Sandiford >> <rdsandif...@googlemail.com>: >>>> 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? > > OK, could you give this a go? I tested it and it is working as expected. Best regards Jürgen
