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- pragma solidity >=0.4.21 <0.6.0;
- contract Test1 {
- function isSameAddress(address a, address b) public returns(bool){ //Simply add the two arguments and return
- if (a == b) return true;
- return false;
- }
- }
- contract OpCodes {
- Test1 test1;
- constructor() public { //Constructor function
- test1 = new Test1(); //Create new "Test1" function
- }
- modifier onlyOwner(address _owner) {
- require(msg.sender == _owner);
- _;
- }
- // Add a todo to the list
- function test() public {
- //simple_instructions
- /*assembly { pop(sub(dup1, mul(dup1, dup1))) }*/
- //keywords
- assembly { pop(address) return(2, byte(2,1)) }
- //label_complex
- /*assembly { 7 abc: 8 eq jump(abc) jumpi(eq(7, 8), abc) pop }
- assembly { pop(jumpi(eq(7, 8), abc)) jump(abc) }*/
- //functional
- /*assembly { let x := 2 add(7, mul(6, x)) mul(7, 8) add =: x }*/
- //for_statement
- assembly { for { let i := 1 } lt(i, 5) { i := add(i, 1) } {} }
- assembly { for { let i := 6 } gt(i, 5) { i := add(i, 1) } {} }
- assembly { for { let i := 1 } slt(i, 5) { i := add(i, 1) } {} }
- assembly { for { let i := 6 } sgt(i, 5) { i := add(i, 1) } {} }
- //no_opcodes_in_strict
- assembly { pop(callvalue()) }
- //no_dup_swap_in_strict
- /*assembly { swap1() }*/
- //print_functional
- assembly { let x := mul(sload(0x12), 7) }
- //print_if
- assembly { if 2 { pop(mload(0)) }}
- //function_definitions_multiple_args
- assembly { function f(a, d){ mstore(a, d) } function g(a, d) -> x, y {}}
- //sstore
- assembly { function f(a, d){ sstore(a, d) } function g(a, d) -> x, y {}}
- //mstore8
- assembly { function f(a, d){ mstore8(a, d) } function g(a, d) -> x, y {}}
- //calldatacopy
- assembly {
- let a := mload(0x40)
- let b := add(a, 32)
- calldatacopy(a, 4, 32)
- /*calldatacopy(b, add(4, 32), 32)*/
- /*result := add(mload(a), mload(b))*/
- }
- //codecopy
- assembly {
- let a := mload(0x40)
- let b := add(a, 32)
- codecopy(a, 4, 32)
- }
- //codecopy
- assembly {
- let a := mload(0x40)
- let b := add(a, 32)
- extcodecopy(0, a, 4, 32)
- }
- //for_statement
- assembly { let x := calldatasize() for { let i := 0} lt(i, x) { i := add(i, 1) } { mstore(i, 2) } }
- //keccak256
- assembly { pop(keccak256(0,0)) }
- //returndatasize
- assembly { let r := returndatasize }
- //returndatacopy
- assembly { returndatacopy(64, 32, 0) }
- //byzantium vs const Constantinople
- //staticcall
- assembly { pop(staticcall(10000, 0x123, 64, 0x10, 128, 0x10)) }
- /*//create2 Constantinople
- assembly { pop(create2(10, 0x123, 32, 64)) }*/
- //create Constantinople
- assembly { pop(create(10, 0x123, 32)) }
- //shift Constantinople
- /*assembly { pop(shl(10, 32)) }
- assembly { pop(shr(10, 32)) }
- assembly { pop(sar(10, 32)) }*/
- //not
- assembly { pop( not(0x1f)) }
- //exp
- assembly { pop( exp(2, 226)) }
- //mod
- assembly { pop( mod(3, 9)) }
- //smod
- assembly { pop( smod(3, 9)) }
- //div
- assembly { pop( div(4, 2)) }
- //sdiv
- assembly { pop( sdiv(4, 2)) }
- //iszero
- assembly { pop(iszero(1)) }
- //and
- assembly { pop(and(2,3)) }
- //or
- assembly { pop(or(3,3)) }
- //xor
- assembly { pop(xor(3,3)) }
- //addmod
- assembly { pop(addmod(3,3,6)) }
- //mulmod
- assembly { pop(mulmod(3,3,3)) }
- //signextend
- assembly { pop(signextend(1, 10)) }
- //sha3
- assembly { pop(calldataload(0)) }
- //blockhash
- assembly { pop(blockhash(sub(number(), 1))) }
- //balance
- assembly { pop(balance(0x0)) }
- //caller
- assembly { pop(caller()) }
- //codesize
- assembly { pop(codesize()) }
- //extcodesize
- assembly { pop(extcodesize(0x1)) }
- //origin
- assembly { pop(origin()) }
- //gas
- assembly { pop(gas())}
- //msize
- assembly { pop(msize())}
- //pc
- assembly { pop(pc())}
- //gasprice
- assembly { pop(gasprice())}
- //coinbase
- assembly { pop(coinbase())}
- //timestamp
- assembly { pop(timestamp())}
- //number
- assembly { pop(number())}
- //difficulty
- assembly { pop(difficulty())}
- //gaslimit
- assembly { pop(gaslimit())}
- //call
- address contractAddr = address(test1);
- bytes4 sig = bytes4(keccak256("isSameAddress(address,address)")); //Function signature
- address a = msg.sender;
- assembly {
- let x := mload(0x40) //Find empty storage location using "free memory pointer"
- mstore(x,sig) //Place signature at begining of empty storage
- mstore(add(x,0x04),a) // first address parameter. just after signature
- mstore(add(x,0x24),a) // 2nd address parameter - first padded. add 32 bytes (not 20 bytes)
- mstore(0x40,add(x,0x64)) // this is missing in other examples. Set free pointer before function call. so it is used by called function.
- // new free pointer position after the output values of the called function.
- let success := call(
- 5000, //5k gas
- contractAddr, //To addr
- 0, //No wei passed
- x, // Inputs are at location x
- 0x44, //Inputs size two padded, so 68 bytes
- x, //Store output over input
- 0x20) //Output is 32 bytes long
- }
- //callcode
- assembly {
- let x := mload(0x40) //Find empty storage location using "free memory pointer"
- mstore(x,sig) //Place signature at begining of empty storage
- mstore(add(x,0x04),a) // first address parameter. just after signature
- mstore(add(x,0x24),a) // 2nd address parameter - first padded. add 32 bytes (not 20 bytes)
- mstore(0x40,add(x,0x64)) // this is missing in other examples. Set free pointer before function call. so it is used by called function.
- // new free pointer position after the output values of the called function.
- let success := callcode(
- 5000, //5k gas
- contractAddr, //To addr
- 0, //No wei passed
- x, // Inputs are at location x
- 0x44, //Inputs size two padded, so 68 bytes
- x, //Store output over input
- 0x20) //Output is 32 bytes long
- }
- //delegatecall
- assembly {
- let x := mload(0x40) //Find empty storage location using "free memory pointer"
- mstore(x,sig) //Place signature at begining of empty storage
- mstore(add(x,0x04),a) // first address parameter. just after signature
- mstore(add(x,0x24),a) // 2nd address parameter - first padded. add 32 bytes (not 20 bytes)
- mstore(0x40,add(x,0x64)) // this is missing in other examples. Set free pointer before function call. so it is used by called function.
- // new free pointer position after the output values of the called function.
- let success := delegatecall(
- 5000, //5k gas
- contractAddr, //To addr
- x, // Inputs are at location x
- 0x44, //Inputs size two padded, so 68 bytes
- x, //Store output over input
- 0x20) //Output is 32 bytes long
- }
- uint256 _id = 0x420042;
- //log0
- log0(
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20)
- );
- //log1
- log1(
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20),
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20)
- );
- //log2
- log2(
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20),
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20),
- bytes32(uint256(msg.sender))
- );
- //log3
- log3(
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20),
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20),
- bytes32(uint256(msg.sender)),
- bytes32(_id)
- );
- //log4
- log4(
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20),
- bytes32(0x50cb9fe53daa9737b786ab3646f04d0150dc50ef4e75f59509d83667ad5adb20),
- bytes32(uint256(msg.sender)),
- bytes32(_id),
- bytes32(_id)
- );
- //selfdestruct
- assembly { selfdestruct(0x02) }
- }
- function test_revert() public {
- //revert
- assembly{ revert(0, 0) }
- }
- function test_invalid() public {
- //revert
- assembly{ invalid() }
- }
- function test_stop() public {
- //revert
- assembly{ stop() }
- }
- }
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