Accumulated simple_random improvements #9
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Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This means we get code for driving the 16550-style UART that microwatt now has. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This adds the vector and VSX instructions currently implemented by Microwatt into the mix. The 128 doublewords of FP/VR/VSRs are added to the gprs array. Memory size is expanded to 1024 bytes. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
With this, to get the old non-interactive mode, you need to put "-o" as the first parameter, like this: ./simple_random -o file $seed $nr_insns (actually anything starting with "-" will work as the first parameter). You can do a single test with ./simple_random $seed $nr_insns or multiple tests like this: ./simple_random $seed $nr_insns $nr_tests Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
FPSCR and VSCR now participate in the final checksum, and are printed if registers=1. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This speeds up test_many output by flushing stdout in getchar_unbuffered() rather than putchar_unbuffered(). Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This avoids getting the prompt at the start of non-interactive output. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Also make all tests on argc/argv depend on __STDC_HOSTED__. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Also enable a few instructions that were disabled before: extswsli[.], cmprb, cmpeqb, setb, bpermd; and add mcrxrx and addpcis. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
sr_bisect is an expect script that connects to two Microwatt instances that are running simple_random and compares their outputs for a range of seed values. When a difference is found, it then uses a bisection search on the number of instructions to find the first instruction where the results differ. It then prints the registers from both instances and the last (up to) 10 instructions generated. The instances can be invoked by running a command (for instance, "ssh arty ./simple_random") or connecting to a serial port. There are options to set the starting seed, the number of seed values to test, and the maximum number of instructions (these default to 0, 1000 and 8000 respectively). If the simple_random instances print FP/VEC/VSX register contents, then give the '-v' flag to sr_bisect so it knows to expect them. An example invocation is: $ sr_bisect 'ssh arty ./simple_random' /dev/ttyUSB0 -s 1234 Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
By including -DVECTOR_INSNS=true on the gcc command line (or not), we can have vector/VSX instructions generated and vector/VSX registers initialized, recorded and printed (or not). Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Presumably to get more parallelism. Changes from July 2022. Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
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The main thing here is optional inclusion of vector/VSX instructions and registers.
Other useful things here include: