2011/1/27 Thorsten Mühlfelder <thenk...@gmx.de>: > Hi, > > I did not really understand what's the difference between -mfloat-abi=soft > and -mfloat-abi=softfp? Does "soft" always use software floating point > and "softfp" could use hardware floating point if a correct -mfpu is given?
Exactly. - soft: only software emulation - softfp + mfpu=xxx: enables the compiler to use FP instructions/registers inside functions, but not as function parameters. This way, code remains compatible with 'soft' libraries - hard: it's a different ABI, where parameters can be passed in FP registers, avoiding expensive moves between core and FP registers. But such code is not compatible with 'soft' libraries. Christophe _______________________________________________ ARMedslack mailing list ARMedslack@lists.armedslack.org http://lists.armedslack.org/mailman/listinfo/armedslack
