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Mavis

Mavis is a framework that allows decoding of the RISC-V ISA into custom instruction class types as well as custom extensions to those class types.

Run regression

Mavis is a header-only library. Regression needs to build a tester.

  • Build library, output will be libmavis.a
mkdir build
cd build
cmake ..
make -j8
  • Build the basic tester; output program is Mavis
cd build/test/basic
make -j8
  • Execute the basic tester and compare golden out
./Mavis > test.out
diff -s test.out golden.out
  • Build and test with a directed program; output program is mavis_decode. This program allows a user to test the validity of an opcode or a mnemonic. This program requires boost program options to be installed on the host machine.
cd build/test/directed
make
./mavis_decode --help
./mavis_decode -a rv32 -o 0x0001a283
./mavis_decode -a rv64 -o 0x0001b283
./mavis_decode -a rv32 -z -o 0x6008