QEMU4V

At the beginning of trace part, that is related to test program, an unexpected hexadecimal value appears (here is is surrounded by '*' symbols for better readability):

38 clk 0 IT (38) ffffffffbfc0fffc nop
*0xffffffffbfc10008*39 clk 0 IT (39) ffffffffbfc10000 j 
40 clk 0 IT (40) ffffffffbfc10004 nop
41 clk 0 IT (41) ffffffffbfc10008 mfc0 t8,$16
42 clk R $t9 ffffffffffff0000
42 clk 0 IT (42) ffffffffbfc1000c lui t9,0xffff

This value should be excluded from MIPS trace.
To reproduce the bug, run run_test.sh script from q4v.tracing branch of MicroTESK for MIPS64 project.