A simple arm emulator
The easiest way to build it is with Nix.
If you don't have Nix installed, you can install it using the following:
$ sh <(curl -L https://nixos.org/nix/install) --no-daemon
See here for more details about the installation.
Once you have Nix installed you should be able to run this:
$ nix-shell
This will drop you into a shell which has all the build dependencies.
Now you can build the project using the following command:
$ dune build
You will find the executable program at _build/default/bin/main.exe
If you're an OCaml user, you can install dependencies with opam.
You can install dependencies using the following:
$ opam install . --deps-only --with-doc --with-test
And build the project with this:
$ opam exec -- dune build
You will find the executable program at _build/default/bin/main.exe
This is a very simple arm32 emulator. Right now it only supports the following instructions:
add |
add.f32 |
sub |
sub.f32 |
mul |
mul.f32 |
div |
div.f32 |
ldr |
vldr |
str |
vstr |
mov |
vmov |
bx |
Given how simple it is, miniarm
expects your program to be just a sequence of instructions which ends with bx lr
$ miniarm --help
miniarm -f [FILE]
-f Specify the file to execute
-help Display this list of options
--help Display this list of options
Say we have the following in a file called example.arm
:
mov r1, #12
mov r2, #13
mov r3, #14
mov r4, #15
bx lr
You can copy _build/default/bin/main.exe
into your working directory and rename it as miniarm
(or just use it directly like: _build/default/bin/main.exe
--help)
And we run this:
$ miniarm -f example.arm
We'd get this as output:
Ast.R6 = 0
Ast.R2 = 13
Ast.R14 = 0
Ast.R8 = 0
Ast.R7 = 0
Ast.R3 = 14
Ast.R13 = 0
Ast.R12 = 0
Ast.R5 = 0
Ast.R4 = 15
Ast.R9 = 0
Ast.R11 = 0
Ast.R0 = 0
Ast.R10 = 0
Ast.R1 = 12
Ast.R15 = 5
This is still a WIP, so please if you catch a bug open an issue.