EccMulTest

EccMulTest.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract EccMulTest {
    
    struct Point {
        uint x;
        uint y;
    }

    event Log(uint x, uint y);

    constructor() {
        Point memory r = eccmul(Point(1, 2),0);
        emit Log(r.x,r.y);
    }

    function eccmul(Point memory p, uint s) public view returns (Point memory r){
        uint[3] memory input;
        input[0] = p.x;
        input[1] = p.y;
        input[2] = s;

        assembly {
            if iszero (staticcall(gas(), 0x07, input, 0x60, r, 0x40)) {
                revert (0,0)
            }
        }

        return r;
    }
}