On Fri, Apr 08, 2011 at 08:07:51AM +0200, ri...@happyleptic.org wrote: > -[ Fri, Apr 08, 2011 at 09:15:16AM +0800, zhangfx ]---- > > > ldc1 $f1, a > > > ldc1 $f2, b > > > madd.d $f0, $f1, $f2 > > > > > Could it be the problem of using odd number floatpoint registers for double? > > MIPS has two modes, normally we use 32bit registers mode, for double, we use > > a pair. e.g. > > lwc1 f0, xx1_low > > lwc1 f1, xx1_high > > lwc1 f2, xx2_low > > lwc1 f3, xx2_high > > fadd.d f4, f0, f2 > > Exactly! > Changing f1 by f4 clears the sigill.
Ralf on irc mentioned: < Ralf> O32 only allows for even-numbered double-precission registers. < Ralf> N32 and N64 allow for both. I checked the mips-n32-abi-handbook.pdf, and it says so. So... now what? -- You received this message because you are subscribed to the Google Groups "loongson-dev" group. To post to this group, send email to loongson-dev@googlegroups.com. To unsubscribe from this group, send email to loongson-dev+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/loongson-dev?hl=en.
