Hi, I test the PPC fpu with machar test (http://orion.math.iastate.edu/burkardt/c_src/machar/machar.html). I get an error with qemu-cvs : invalid bits: 00000042 for opcode: 13 - 01 - 01 (4fdef042) 00037e60
ASM code : 00037e54 <__isnan>: 37e54: fc 00 04 8e mffs f0 37e58: ff 00 00 8c mtfsb0 4*cr6+lt 37e5c: ff 81 08 00 fcmpu cr7,f1,f1 37e60: 4f de f0 42 crnot 4*cr7+eq,4*cr7+eq <=====================faillure here, crnot bx,by equivalent to crnor bx,by,by 37e64: 7c 60 00 26 mfcr r3 37e68: 54 63 ff fe rlwinm r3,r3,31,31,31 37e6c: fd fe 05 8e mtfsf 255,f0 37e70: 4e 80 00 20 b I don't understand why the decoding of this instruction fails. Those seems to be the same error that I reported 1 month ago about crnand and a seg fault. If someone has a clue... Thanks, Claude
