This is a RISC-V emulator for the RV32I architecture, based on TinyEMU and stripped down for RV32I only.
Requires libelf-dev:
$ sudo apt-get install libelf-dev
How to compile it:
$ gcc -O3 -Wall emu-rv32i.c -o emu-rv32i -lelf
Run RV32I compliance tests.
Assume emu-rv32i in $PATH environment variable.
$ git clone https://github.com/riscv/riscv-compliance
$ cd riscv-compliance
$ make RISCV_PREFIX=riscv-none-embed- RISCV_DEVICE=rv32i TARGET_SIM=emu-rv32i variantCompiling and running simple code:
$ riscv32-unknown-elf-gcc -O3 -nostdlib test1.c -o test1
or
$ riscv64-unknown-elf-gcc -march=rv32i -mabi=ilp32 -O3 -nostdlib test1.c -o test1
then
$ ./emu-rv32i test1
Hello RISC-V!RV32M and RV32A instructions may be enabled by commenting #define STRICT_RV32I.
https://github.com/riscv/riscv-gnu-toolchain
64-bit universal version (riscv64-unknown-elf-* that can build 32-bit code too):
$ ./configure --prefix=/opt/riscv $ make
32-bit version (riscv32-unknown-elf-*):
$ ./configure --prefix=/opt/riscv32 --with-arch=rv32i --with-abi=ilp32 $ make