EVM.lua

This project aims to implement a fully compliant EVM in Lua scripting language. It provides scripts to bind it to a Redis database, enabling it to run EVM functions at scale.

Installation

1. Install Lua, the scripting language. brew install lua on Mac.
2. Install luarocks, a package manager for Lua: brew install luarocks
3. Install Redis and run redis-server to start the db.
4. Run ./load.sh to load evm.lua script into Redis, with some test data.

To-dos:

• Create and deploy Lua functions that interprets EVM bytecode
• Feed account storage based on initial list and block number
• Implement basic benchmark scripts
• Nested call context
• Gas metering

Opcodes implemented: 57/152

00✅	01✅	02✅	03✅	04✅	05✅	06	07	08	09	0A	0B
10✅	11✅	12✅	13✅	14✅	15✅	16	17	18	19	1A	1B	1C	1D
20
30	31	32	33	34	35	36	37	38	39	3A	3B	3C	3D	3E	3F
40	41	42	43	44	45	46	47	48	49	4A
50✅	51	52	53	54✅	55	56✅	57✅	58	59	5A	5B✅	5C	5D	5E	5F✅
60✅	61✅	62✅	63✅	64✅	65✅	66✅	67	68	69	6A	6B	6C	6D	6E	6F
70	71	72	73	74	75	76	77	78	79	7A	7B	7C	7D	7E	7F
80✅	81✅	82✅	83✅	84✅	85✅	86✅	87✅	88✅	89✅	8A✅	8B✅	8C✅	8D✅	8E✅	8F✅
90✅	91✅	92✅	93✅	94✅	95✅	96✅	97✅	98✅	99✅	9A✅	9B✅	9C✅	9D✅	9E✅	9F✅
A0	A1	A2	A3	A4
B0	B1	B2
F0	F1	F2	F3	F4	F5					FA			FD		FF

Install redis-cli on amazon linux 2

sudo yum install wget -y
sudo yum install tcl -y
sudo yum install gcc -y
sudo yum install centos-release-scl -y
sudo yum install devtoolset-9-gcc devtooset-g-gcc-c++ devtoolset-9-binutils -y
sudo yum install openssl-devel* -y

Reference links

• Lua programming guide
• EVM reference
• Official EVM state tests
• Testing local functions

Use Redis triggers to do garbage collection: https://redis.io/docs/interact/programmability/triggers-and-functions/examples/

EVM.init should support:

• new attributes: calldata and depth, starting at 0/1 for each new CALL opcode-type, instantiate a new EVM.init, passing arguments.
• RETURN should return data from memory, kill the execution context branch. decrement depth. If depth == top depth, return function to external