openethereum/rust-evmjit/src/lib.rs
2015-12-10 14:59:46 +01:00

74 lines
1.5 KiB
Rust

//! Bare rust wrapper around evmjit
//!
//! Requires latest version of Ethereum EVM JIT. https://github.com/debris/evmjit
extern crate libc;
use std::ptr;
#[repr(C)]
pub struct JitI256 {
pub words: [u64; 4]
}
#[repr(C)]
pub struct JitRuntimeData {
pub gas: i64,
pub gas_price: i64,
pub call_data: *const libc::c_char,
pub call_data_size: u64,
pub address: JitI256,
pub caller: JitI256,
pub origin: JitI256,
pub call_value: JitI256,
pub coinbase: JitI256,
pub difficulty: JitI256,
pub gas_limit: JitI256,
pub number: u64,
pub timestamp: i64,
pub code: *const libc::c_char,
pub code_size: u64,
pub code_hash: JitI256
}
#[repr(C)]
#[derive(Debug, Eq, PartialEq)]
pub enum JitReturnCode {
Stop = 0,
Return = 1,
Suicide = 2,
OutOfGas = -1,
LLVMError = -101,
UnexpectedError = -111
}
pub enum JitContext {}
#[link(name="evmjit")]
extern "C" {
pub fn evmjit_create_runtime_data() -> *mut JitRuntimeData;
pub fn evmjit_destroy_runtime_data(data: *mut JitRuntimeData);
pub fn evmjit_create_context(data: *mut JitRuntimeData, env: u8) -> *mut JitContext;
pub fn evmjit_destroy_context(context: *mut JitContext);
pub fn evmjit_exec(context: *mut JitContext) -> JitReturnCode;
}
#[test]
fn it_works() {
unsafe {
let data = evmjit_create_runtime_data();
let context = evmjit_create_context(data, 0);
let code = evmjit_exec(context);
assert_eq!(code, JitReturnCode::Stop);
evmjit_destroy_runtime_data(data);
evmjit_destroy_context(context);
}
}