mirror of
https://github.com/ethereum/solidity
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Introduce VM version ('hard fork') column for assembly opcodes
This commit is contained in:
Alex Beregszaszi
parent
e424bd1007
commit
8cebfb168b
@ -153,6 +153,8 @@ If an opcode takes arguments (always from the top of the stack), they are given
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Note that the order of arguments can be seen to be reversed in non-functional style (explained below).
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Opcodes marked with ``-`` do not push an item onto the stack, those marked with ``*`` are
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special and all others push exactly one item onto the stack.
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Opcodes marked with ``F``, ``H``, ``B`` or ``C`` are present since Frontier, Homestead, Byzantium or Constantinople, respectively.
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Constantinople is still in planning and all instructions marked as such will result in an invalid instruction exception.
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In the following, ``mem[a...b)`` signifies the bytes of memory starting at position ``a`` up to
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(excluding) position ``b`` and ``storage[p]`` signifies the storage contents at position ``p``.
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@ -161,167 +163,167 @@ The opcodes ``pushi`` and ``jumpdest`` cannot be used directly.
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In the grammar, opcodes are represented as pre-defined identifiers.
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+-------------------------+------+-----------------------------------------------------------------+
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| Instruction | | Explanation |
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+=========================+======+=================================================================+
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| stop + `-` | stop execution, identical to return(0,0) |
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+-------------------------+------+-----------------------------------------------------------------+
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| add(x, y) | | x + y |
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+-------------------------+------+-----------------------------------------------------------------+
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| sub(x, y) | | x - y |
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+-------------------------+------+-----------------------------------------------------------------+
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| mul(x, y) | | x * y |
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+-------------------------+------+-----------------------------------------------------------------+
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| div(x, y) | | x / y |
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+-------------------------+------+-----------------------------------------------------------------+
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| sdiv(x, y) | | x / y, for signed numbers in two's complement |
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+-------------------------+------+-----------------------------------------------------------------+
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| mod(x, y) | | x % y |
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+-------------------------+------+-----------------------------------------------------------------+
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| smod(x, y) | | x % y, for signed numbers in two's complement |
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+-------------------------+------+-----------------------------------------------------------------+
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| exp(x, y) | | x to the power of y |
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+-------------------------+------+-----------------------------------------------------------------+
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| not(x) | | ~x, every bit of x is negated |
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+-------------------------+------+-----------------------------------------------------------------+
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| lt(x, y) | | 1 if x < y, 0 otherwise |
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+-------------------------+------+-----------------------------------------------------------------+
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| gt(x, y) | | 1 if x > y, 0 otherwise |
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+-------------------------+------+-----------------------------------------------------------------+
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| slt(x, y) | | 1 if x < y, 0 otherwise, for signed numbers in two's complement |
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+-------------------------+------+-----------------------------------------------------------------+
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| sgt(x, y) | | 1 if x > y, 0 otherwise, for signed numbers in two's complement |
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+-------------------------+------+-----------------------------------------------------------------+
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| eq(x, y) | | 1 if x == y, 0 otherwise |
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+-------------------------+------+-----------------------------------------------------------------+
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| iszero(x) | | 1 if x == 0, 0 otherwise |
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+-------------------------+------+-----------------------------------------------------------------+
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| and(x, y) | | bitwise and of x and y |
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+-------------------------+------+-----------------------------------------------------------------+
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| or(x, y) | | bitwise or of x and y |
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+-------------------------+------+-----------------------------------------------------------------+
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| xor(x, y) | | bitwise xor of x and y |
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+-------------------------+------+-----------------------------------------------------------------+
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| byte(n, x) | | nth byte of x, where the most significant byte is the 0th byte |
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+-------------------------+------+-----------------------------------------------------------------+
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| addmod(x, y, m) | | (x + y) % m with arbitrary precision arithmetics |
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+-------------------------+------+-----------------------------------------------------------------+
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| mulmod(x, y, m) | | (x * y) % m with arbitrary precision arithmetics |
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+-------------------------+------+-----------------------------------------------------------------+
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| signextend(i, x) | | sign extend from (i*8+7)th bit counting from least significant |
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+-------------------------+------+-----------------------------------------------------------------+
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| keccak256(p, n) | | keccak(mem[p...(p+n))) |
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+-------------------------+------+-----------------------------------------------------------------+
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| sha3(p, n) | | keccak(mem[p...(p+n))) |
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+-------------------------+------+-----------------------------------------------------------------+
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| jump(label) | `-` | jump to label / code position |
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+-------------------------+------+-----------------------------------------------------------------+
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| jumpi(label, cond) | `-` | jump to label if cond is nonzero |
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+-------------------------+------+-----------------------------------------------------------------+
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| pc | | current position in code |
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+-------------------------+------+-----------------------------------------------------------------+
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| pop(x) | `-` | remove the element pushed by x |
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+-------------------------+------+-----------------------------------------------------------------+
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| dup1 ... dup16 | | copy ith stack slot to the top (counting from top) |
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+-------------------------+------+-----------------------------------------------------------------+
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| swap1 ... swap16 | `*` | swap topmost and ith stack slot below it |
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+-------------------------+------+-----------------------------------------------------------------+
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| mload(p) | | mem[p..(p+32)) |
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+-------------------------+------+-----------------------------------------------------------------+
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| mstore(p, v) | `-` | mem[p..(p+32)) := v |
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+-------------------------+------+-----------------------------------------------------------------+
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| mstore8(p, v) | `-` | mem[p] := v & 0xff (only modifies a single byte) |
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+-------------------------+------+-----------------------------------------------------------------+
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| sload(p) | | storage[p] |
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+-------------------------+------+-----------------------------------------------------------------+
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| sstore(p, v) | `-` | storage[p] := v |
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+-------------------------+------+-----------------------------------------------------------------+
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| msize | | size of memory, i.e. largest accessed memory index |
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+-------------------------+------+-----------------------------------------------------------------+
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| gas | | gas still available to execution |
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+-------------------------+------+-----------------------------------------------------------------+
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| address | | address of the current contract / execution context |
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+-------------------------+------+-----------------------------------------------------------------+
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| balance(a) | | wei balance at address a |
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+-------------------------+------+-----------------------------------------------------------------+
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| caller | | call sender (excluding ``delegatecall``) |
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+-------------------------+------+-----------------------------------------------------------------+
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| callvalue | | wei sent together with the current call |
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+-------------------------+------+-----------------------------------------------------------------+
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| calldataload(p) | | call data starting from position p (32 bytes) |
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+-------------------------+------+-----------------------------------------------------------------+
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| calldatasize | | size of call data in bytes |
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+-------------------------+------+-----------------------------------------------------------------+
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| calldatacopy(t, f, s) | `-` | copy s bytes from calldata at position f to mem at position t |
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+-------------------------+------+-----------------------------------------------------------------+
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| codesize | | size of the code of the current contract / execution context |
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+-------------------------+------+-----------------------------------------------------------------+
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| codecopy(t, f, s) | `-` | copy s bytes from code at position f to mem at position t |
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+-------------------------+------+-----------------------------------------------------------------+
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| extcodesize(a) | | size of the code at address a |
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+-------------------------+------+-----------------------------------------------------------------+
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| extcodecopy(a, t, f, s) | `-` | like codecopy(t, f, s) but take code at address a |
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+-------------------------+------+-----------------------------------------------------------------+
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| returndatasize | | size of the last returndata |
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+-------------------------+------+-----------------------------------------------------------------+
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| returndatacopy(t, f, s) | `-` | copy s bytes from returndata at position f to mem at position t |
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+-------------------------+------+-----------------------------------------------------------------+
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| create(v, p, s) | | create new contract with code mem[p..(p+s)) and send v wei |
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| | | and return the new address |
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+-------------------------+------+-----------------------------------------------------------------+
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| create2(v, n, p, s) | | create new contract with code mem[p..(p+s)) at address |
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| | | keccak256(<address> . n . keccak256(mem[p..(p+s))) and send v |
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| | | wei and return the new address |
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+-------------------------+------+-----------------------------------------------------------------+
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| call(g, a, v, in, | | call contract at address a with input mem[in..(in+insize)) |
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| insize, out, outsize) | | providing g gas and v wei and output area |
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| | | mem[out..(out+outsize)) returning 0 on error (eg. out of gas) |
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| | | and 1 on success |
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+-------------------------+------+-----------------------------------------------------------------+
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| callcode(g, a, v, in, | | identical to ``call`` but only use the code from a and stay |
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| insize, out, outsize) | | in the context of the current contract otherwise |
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+-------------------------+------+-----------------------------------------------------------------+
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| delegatecall(g, a, in, | | identical to ``callcode`` but also keep ``caller`` |
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| insize, out, outsize) | | and ``callvalue`` |
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+-------------------------+------+-----------------------------------------------------------------+
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| staticcall(g, a, in, | | identical to ``call(g, a, 0, in, insize, out, outsize)`` but do |
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| insize, out, outsize) | | not allow state modifications |
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+-------------------------+------+-----------------------------------------------------------------+
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| return(p, s) | `-` | end execution, return data mem[p..(p+s)) |
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+-------------------------+------+-----------------------------------------------------------------+
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| revert(p, s) | `-` | end execution, revert state changes, return data mem[p..(p+s)) |
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+-------------------------+------+-----------------------------------------------------------------+
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| selfdestruct(a) | `-` | end execution, destroy current contract and send funds to a |
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+-------------------------+------+-----------------------------------------------------------------+
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| invalid | `-` | end execution with invalid instruction |
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+-------------------------+------+-----------------------------------------------------------------+
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| log0(p, s) | `-` | log without topics and data mem[p..(p+s)) |
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+-------------------------+------+-----------------------------------------------------------------+
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| log1(p, s, t1) | `-` | log with topic t1 and data mem[p..(p+s)) |
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+-------------------------+------+-----------------------------------------------------------------+
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| log2(p, s, t1, t2) | `-` | log with topics t1, t2 and data mem[p..(p+s)) |
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+-------------------------+------+-----------------------------------------------------------------+
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| log3(p, s, t1, t2, t3) | `-` | log with topics t1, t2, t3 and data mem[p..(p+s)) |
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+-------------------------+------+-----------------------------------------------------------------+
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| log4(p, s, t1, t2, t3, | `-` | log with topics t1, t2, t3, t4 and data mem[p..(p+s)) |
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| t4) | | |
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+-------------------------+------+-----------------------------------------------------------------+
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| origin | | transaction sender |
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+-------------------------+------+-----------------------------------------------------------------+
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| gasprice | | gas price of the transaction |
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+-------------------------+------+-----------------------------------------------------------------+
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| blockhash(b) | | hash of block nr b - only for last 256 blocks excluding current |
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+-------------------------+------+-----------------------------------------------------------------+
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| coinbase | | current mining beneficiary |
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+-------------------------+------+-----------------------------------------------------------------+
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| timestamp | | timestamp of the current block in seconds since the epoch |
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+-------------------------+------+-----------------------------------------------------------------+
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| number | | current block number |
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+-------------------------+------+-----------------------------------------------------------------+
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| difficulty | | difficulty of the current block |
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+-------------------------+------+-----------------------------------------------------------------+
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| gaslimit | | block gas limit of the current block |
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+-------------------------+------+-----------------------------------------------------------------+
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| Instruction | | | Explanation |
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+=========================+=====+===+=================================================================+
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| stop + `-` | F | stop execution, identical to return(0,0) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| add(x, y) | | F | x + y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| sub(x, y) | | F | x - y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| mul(x, y) | | F | x * y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| div(x, y) | | F | x / y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| sdiv(x, y) | | F | x / y, for signed numbers in two's complement |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| mod(x, y) | | F | x % y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| smod(x, y) | | F | x % y, for signed numbers in two's complement |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| exp(x, y) | | F | x to the power of y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| not(x) | | F | ~x, every bit of x is negated |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| lt(x, y) | | F | 1 if x < y, 0 otherwise |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| gt(x, y) | | F | 1 if x > y, 0 otherwise |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| slt(x, y) | | F | 1 if x < y, 0 otherwise, for signed numbers in two's complement |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| sgt(x, y) | | F | 1 if x > y, 0 otherwise, for signed numbers in two's complement |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| eq(x, y) | | F | 1 if x == y, 0 otherwise |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| iszero(x) | | F | 1 if x == 0, 0 otherwise |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| and(x, y) | | F | bitwise and of x and y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| or(x, y) | | F | bitwise or of x and y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| xor(x, y) | | F | bitwise xor of x and y |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| byte(n, x) | | F | nth byte of x, where the most significant byte is the 0th byte |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| addmod(x, y, m) | | F | (x + y) % m with arbitrary precision arithmetics |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| mulmod(x, y, m) | | F | (x * y) % m with arbitrary precision arithmetics |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| signextend(i, x) | | F | sign extend from (i*8+7)th bit counting from least significant |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| keccak256(p, n) | | F | keccak(mem[p...(p+n))) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| sha3(p, n) | | F | keccak(mem[p...(p+n))) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| jump(label) | `-` | F | jump to label / code position |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| jumpi(label, cond) | `-` | F | jump to label if cond is nonzero |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| pc | | F | current position in code |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| pop(x) | `-` | F | remove the element pushed by x |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| dup1 ... dup16 | | F | copy ith stack slot to the top (counting from top) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| swap1 ... swap16 | `*` | F | swap topmost and ith stack slot below it |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| mload(p) | | F | mem[p..(p+32)) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| mstore(p, v) | `-` | F | mem[p..(p+32)) := v |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| mstore8(p, v) | `-` | F | mem[p] := v & 0xff (only modifies a single byte) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| sload(p) | | F | storage[p] |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| sstore(p, v) | `-` | F | storage[p] := v |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| msize | | F | size of memory, i.e. largest accessed memory index |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| gas | | F | gas still available to execution |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| address | | F | address of the current contract / execution context |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| balance(a) | | F | wei balance at address a |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| caller | | F | call sender (excluding ``delegatecall``) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| callvalue | | F | wei sent together with the current call |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| calldataload(p) | | F | call data starting from position p (32 bytes) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| calldatasize | | F | size of call data in bytes |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| calldatacopy(t, f, s) | `-` | F | copy s bytes from calldata at position f to mem at position t |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| codesize | | F | size of the code of the current contract / execution context |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| codecopy(t, f, s) | `-` | F | copy s bytes from code at position f to mem at position t |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| extcodesize(a) | | F | size of the code at address a |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| extcodecopy(a, t, f, s) | `-` | F | like codecopy(t, f, s) but take code at address a |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| returndatasize | | B | size of the last returndata |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| returndatacopy(t, f, s) | `-` | B | copy s bytes from returndata at position f to mem at position t |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| create(v, p, s) | | F | create new contract with code mem[p..(p+s)) and send v wei |
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| | | | and return the new address |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| create2(v, n, p, s) | | C | create new contract with code mem[p..(p+s)) at address |
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| | | | keccak256(<address> . n . keccak256(mem[p..(p+s))) and send v |
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| | | | wei and return the new address |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| call(g, a, v, in, | | F | call contract at address a with input mem[in..(in+insize)) |
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| insize, out, outsize) | | | providing g gas and v wei and output area |
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| | | | mem[out..(out+outsize)) returning 0 on error (eg. out of gas) |
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| | | | and 1 on success |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| callcode(g, a, v, in, | | F | identical to ``call`` but only use the code from a and stay |
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| insize, out, outsize) | | | in the context of the current contract otherwise |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| delegatecall(g, a, in, | | H | identical to ``callcode`` but also keep ``caller`` |
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| insize, out, outsize) | | | and ``callvalue`` |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| staticcall(g, a, in, | | B | identical to ``call(g, a, 0, in, insize, out, outsize)`` but do |
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| insize, out, outsize) | | | not allow state modifications |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| return(p, s) | `-` | F | end execution, return data mem[p..(p+s)) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| revert(p, s) | `-` | B | end execution, revert state changes, return data mem[p..(p+s)) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| selfdestruct(a) | `-` | F | end execution, destroy current contract and send funds to a |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| invalid | `-` | F | end execution with invalid instruction |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| log0(p, s) | `-` | F | log without topics and data mem[p..(p+s)) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| log1(p, s, t1) | `-` | F | log with topic t1 and data mem[p..(p+s)) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| log2(p, s, t1, t2) | `-` | F | log with topics t1, t2 and data mem[p..(p+s)) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| log3(p, s, t1, t2, t3) | `-` | F | log with topics t1, t2, t3 and data mem[p..(p+s)) |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| log4(p, s, t1, t2, t3, | `-` | F | log with topics t1, t2, t3, t4 and data mem[p..(p+s)) |
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| t4) | | | |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| origin | | F | transaction sender |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| gasprice | | F | gas price of the transaction |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| blockhash(b) | | F | hash of block nr b - only for last 256 blocks excluding current |
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+-------------------------+-----+---+-----------------------------------------------------------------+
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| coinbase | | F | current mining beneficiary |
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||||
+-------------------------+-----+---+-----------------------------------------------------------------+
|
||||
| timestamp | | F | timestamp of the current block in seconds since the epoch |
|
||||
+-------------------------+-----+---+-----------------------------------------------------------------+
|
||||
| number | | F | current block number |
|
||||
+-------------------------+-----+---+-----------------------------------------------------------------+
|
||||
| difficulty | | F | difficulty of the current block |
|
||||
+-------------------------+-----+---+-----------------------------------------------------------------+
|
||||
| gaslimit | | F | block gas limit of the current block |
|
||||
+-------------------------+-----+---+-----------------------------------------------------------------+
|
||||
|
||||
Literals
|
||||
--------
|
||||
|
||||
Loading…
Reference in New Issue
Block a user