This is the terminal emulator you see in action when you use jslm32. It was written by Fabrice Bellard, who also started the QEMU project (referenced below).
The test files I'm using are a port of QEMU's lm32 test files, source from QEMU's tests/tcg/lm32 directory. See the third-party/qemu-tcg-lm32-tests directory in your jslm32 for information on how to build your own test files.
My fork of QEMU is on GitHub
See GitHub link above for detailed licensing information.
The QEMU distribution includes both the QEMU emulator and various firmware files. These are separate programs that are distributed together for our users' convenience, and they have separate licenses. The following points clarify the license of the QEMU emulator: 1) The QEMU emulator as a whole is released under the GNU General Public License, version 2. 2) Parts of the QEMU emulator have specific licenses which are compatible with the GNU General Public License, version 2. Hence each source file contains its own licensing information. Source files with no licensing information are released under the GNU General Public License, version 2 or (at your option) any later version. As of July 2013, contributions under version 2 of the GNU General Public License (and no later version) are only accepted for the following files or directories: bsd-user/, linux-user/, hw/vfio/, hw/xen/xen_pt*. 3) The Tiny Code Generator (TCG) is mostly under the BSD or MIT licenses; but some parts may be GPLv2 or other licenses. Again, see the specific licensing information in each source file. 4) QEMU is a trademark of Fabrice Bellard. Fabrice Bellard and the QEMU team