What does the actual assert say? I'm wildly guessing a load crossed a
cache line boundary, but it's hard to say from the backtrace. That
addlv instruction might actually be executed. You could try
implementing a pseudo instruction which is much less likely to be used
accidentally.
Gabe
Quoting Pritha Ghoshal <[email protected]>:
Hi,
We have been getting an abort while running M5 in full system mode. We have
modified one instruction (addlv) to execute a different function, because
that instruction is never used in the kernel part of the code. The debugger
backtrace output is given below. Could anyone help us by suggesting
possible reasons for this abort?
Thanks
Pritha
#0 0x0000003423c30265 in raise () from /lib64/libc.so.6
#1 0x0000003423c31d10 in abort () from /lib64/libc.so.6
#2 0x0000003423c296e6 in __assert_fail () from /lib64/libc.so.6
#3 0x0000000000435a3e in read<uint64_t> (this=0x14e4950,
addr=1099510579592, da...@0x7fffffffd0e8, flags=512) at
build/ALPHA_FS/cpu/simple/atomic.cc:518
#4 0x0000000000456465 in AlphaISAInst::Hw_ldQ::execute (this=0x2051e70,
xc=0x14e4950, traceData=0x0) at build/ALPHA_FS/base/flags.hh:45
#5 0x0000000000425be6 in AtomicSimpleCPU::tick (this=0x14e4950) at
build/ALPHA_FS/base/refcnt.hh:83
#6 0x00000000006703d5 in EventQueue::serviceOne (this=<value optimized
out>) at build/ALPHA_FS/sim/eventq.cc:202
#7 0x00000000009f2f12 in simulate (num_cycles=9223372036854775807) at
build/ALPHA_FS/sim/simulate.cc:73
#8 0x0000000000a62fd7 in _wrap_simulate (self=<value optimized out>,
args=<value optimized out>) at build/ALPHA_FS/python/swig/event_wrap.cc:4079
#9 0x000000343b2360f0 in PyObject_Call () from
/usr/lib64/libpython2.4.so.1.0
#10 0x000000343b29352c in PyEval_EvalFrame () from
/usr/lib64/libpython2.4.so.1.0
#11 0x000000343b295fe5 in PyEval_EvalCodeEx () from
/usr/lib64/libpython2.4.so.1.0
#12 0x000000343b29473f in PyEval_EvalFrame () from
/usr/lib64/libpython2.4.so.1.0
#13 0x000000343b294b66 in PyEval_EvalFrame () from
/usr/lib64/libpython2.4.so.1.0
#14 0x000000343b295fe5 in PyEval_EvalCodeEx () from
/usr/lib64/libpython2.4.so.1.0
#15 0x000000343b296032 in PyEval_EvalCode () from
/usr/lib64/libpython2.4.so.1.0
#16 0x000000343b295237 in PyEval_EvalFrame () from
/usr/lib64/libpython2.4.so.1.0
#17 0x000000343b295fe5 in PyEval_EvalCodeEx () from
/usr/lib64/libpython2.4.so.1.0
#18 0x000000343b29473f in PyEval_EvalFrame () from
/usr/lib64/libpython2.4.so.1.0
#19 0x000000343b295fe5 in PyEval_EvalCodeEx () from
/usr/lib64/libpython2.4.so.1.0
#20 0x000000343b296032 in PyEval_EvalCode () from
/usr/lib64/libpython2.4.so.1.0
#21 0x000000343b2b2729 in ?? () from /usr/lib64/libpython2.4.so.1.0
#22 0x0000000000791365 in m5Main (argc=<value optimized out>, argv=<value
optimized out>) at build/ALPHA_FS/sim/init.cc:194
#23 0x000000000040854c in main (argc=7, argv=0x7fffffffe848) at
build/ALPHA_FS/sim/main.cc:57
--
Pritha Ghoshal
Texas A&M University
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