Hello all,
I'm looking for a way to run multiple binaries (or multiple runs of the same
binary) back to back in the same simulation session in syscall emulation mode
on a single CPU / no SMT.
I had good success doing this in full system emulation - it's easy to write a
custom script containing the desired binaries sandwiched between m5
resetstats/dumpstats and m5 exit, for example:
```
#!/bin/bash
cd /some/path/
m5 resetstats
./binary args_1
./binary args_2
m5 dumpstats
m5 exit
```
However, looking at "examples/se.py" help and source, I see no obvious way of
doing anything similar. I see that "-cmd" and "-options" parameters are split
along ";", but any additional workloads after the first one seem to only be
used in when multithreading is enabled or ncpus>1.
Here's a specific example on how I checked whether the above situation is
supported:
test.c:
```
#include <stdio.h>
#include <stdlib.h>
int main( int argc, char *argv[] ){
printf("Hello from SE! ");
if (argc > 1){
printf("DETECTED ARGUMENTS:\n");
for(int idx = 1; idx < argc; idx++)
printf("%d %s\n", idx, argv[idx]);
}
return 0;
}
```
Building:
aarch64-linux-gnu-gcc -o test_aarch64 test.c -static
Simulating:
../gem5/build/ARM/gem5.opt ../gem5/configs/example/se.py
--cmd="test_aarch64;test_aarch64" --options="args_1;args_2"
Actual output:
**** REAL SIMULATION ****
<...>
Hello from SE! DETECTED ARGUMENTS:
1 args_1
Exiting @ tick 4545000 because exiting with last active thread context
Expected output:
**** REAL SIMULATION ****
<...>
Hello from SE! DETECTED ARGUMENTS:
1 args_1
Hello from SE! DETECTED ARGUMENTS:
1 args_2
Exiting @ tick 4545000 because exiting with last active thread context
Is there any other config script that does support such multiple binary
simulation on a single CPU w/o multithreading? Have I missed some existing
resources that already do this? Can someone confirm if this is at all possible
in syscall emulation?
Thanks!
Norbert K.
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