1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
package vm
import (
"fmt"
"math/big"
)
var (
GasQuickStep = big.NewInt(2)
GasFastestStep = big.NewInt(3)
GasFastStep = big.NewInt(5)
GasMidStep = big.NewInt(8)
GasSlowStep = big.NewInt(10)
GasExtStep = big.NewInt(20)
GasStorageGet = big.NewInt(50)
GasStorageAdd = big.NewInt(20000)
GasStorageMod = big.NewInt(5000)
GasLogBase = big.NewInt(375)
GasLogTopic = big.NewInt(375)
GasLogByte = big.NewInt(8)
GasCreate = big.NewInt(32000)
GasCreateByte = big.NewInt(200)
GasCall = big.NewInt(40)
GasCallValueTransfer = big.NewInt(9000)
GasStipend = big.NewInt(2300)
GasCallNewAccount = big.NewInt(25000)
GasReturn = big.NewInt(0)
GasStop = big.NewInt(0)
GasJumpDest = big.NewInt(1)
RefundStorage = big.NewInt(15000)
RefundSuicide = big.NewInt(24000)
GasMemWord = big.NewInt(3)
GasQuadCoeffDenom = big.NewInt(512)
GasContractByte = big.NewInt(200)
GasTransaction = big.NewInt(21000)
GasTxDataNonzeroByte = big.NewInt(68)
GasTxDataZeroByte = big.NewInt(4)
GasTx = big.NewInt(21000)
GasExp = big.NewInt(10)
GasExpByte = big.NewInt(10)
GasSha3Base = big.NewInt(30)
GasSha3Word = big.NewInt(6)
GasSha256Base = big.NewInt(60)
GasSha256Word = big.NewInt(12)
GasRipemdBase = big.NewInt(600)
GasRipemdWord = big.NewInt(12)
GasEcrecover = big.NewInt(3000)
GasIdentityBase = big.NewInt(15)
GasIdentityWord = big.NewInt(3)
GasCopyWord = big.NewInt(3)
)
func baseCheck(op OpCode, stack *stack, gas *big.Int) error {
// PUSH and DUP are a bit special. They all cost the same but we do want to have checking on stack push limit
// PUSH is also allowed to calculate the same price for all PUSHes
// DUP requirements are handled elsewhere (except for the stack limit check)
if op >= PUSH1 && op <= PUSH32 {
op = PUSH1
}
if op >= SWAP1 && op <= SWAP16 {
op = SWAP1
}
if r, ok := _baseCheck[op]; ok {
err := stack.require(r.stackPop)
if err != nil {
return err
}
if r.stackPush && len(stack.data)-r.stackPop == 1024 {
return fmt.Errorf("stack limit reached (%d)", maxStack)
}
gas.Add(gas, r.gas)
}
return nil
}
func toWordSize(size *big.Int) *big.Int {
tmp := new(big.Int)
tmp.Add(size, u256(31))
tmp.Div(tmp, u256(32))
return tmp
}
type req struct {
stackPop int
gas *big.Int
stackPush bool
}
var _baseCheck = map[OpCode]req{
// opcode | stack pop | gas price | stack push
ADD: {2, GasFastestStep, true},
LT: {2, GasFastestStep, true},
GT: {2, GasFastestStep, true},
SLT: {2, GasFastestStep, true},
SGT: {2, GasFastestStep, true},
EQ: {2, GasFastestStep, true},
ISZERO: {1, GasFastestStep, true},
SUB: {2, GasFastestStep, true},
AND: {2, GasFastestStep, true},
OR: {2, GasFastestStep, true},
XOR: {2, GasFastestStep, true},
NOT: {1, GasFastestStep, true},
BYTE: {2, GasFastestStep, true},
CALLDATALOAD: {1, GasFastestStep, true},
CALLDATACOPY: {3, GasFastestStep, true},
MLOAD: {1, GasFastestStep, true},
MSTORE: {2, GasFastestStep, false},
MSTORE8: {2, GasFastestStep, false},
CODECOPY: {3, GasFastestStep, false},
MUL: {2, GasFastStep, true},
DIV: {2, GasFastStep, true},
SDIV: {2, GasFastStep, true},
MOD: {2, GasFastStep, true},
SMOD: {2, GasFastStep, true},
SIGNEXTEND: {2, GasFastStep, true},
ADDMOD: {3, GasMidStep, true},
MULMOD: {3, GasMidStep, true},
JUMP: {1, GasMidStep, false},
JUMPI: {2, GasSlowStep, false},
EXP: {2, GasSlowStep, true},
ADDRESS: {0, GasQuickStep, true},
ORIGIN: {0, GasQuickStep, true},
CALLER: {0, GasQuickStep, true},
CALLVALUE: {0, GasQuickStep, true},
CODESIZE: {0, GasQuickStep, true},
GASPRICE: {0, GasQuickStep, true},
COINBASE: {0, GasQuickStep, true},
TIMESTAMP: {0, GasQuickStep, true},
NUMBER: {0, GasQuickStep, true},
CALLDATASIZE: {0, GasQuickStep, true},
DIFFICULTY: {0, GasQuickStep, true},
GASLIMIT: {0, GasQuickStep, true},
POP: {1, GasQuickStep, false},
PC: {0, GasQuickStep, true},
MSIZE: {0, GasQuickStep, true},
GAS: {0, GasQuickStep, true},
BLOCKHASH: {1, GasExtStep, true},
BALANCE: {0, GasExtStep, true},
EXTCODESIZE: {1, GasExtStep, true},
EXTCODECOPY: {4, GasExtStep, false},
SLOAD: {1, GasStorageGet, true},
SSTORE: {2, Zero, false},
SHA3: {1, GasSha3Base, true},
CREATE: {3, GasCreate, true},
CALL: {7, GasCall, true},
CALLCODE: {7, GasCall, true},
JUMPDEST: {0, GasJumpDest, false},
SUICIDE: {1, Zero, false},
RETURN: {2, Zero, false},
PUSH1: {0, GasFastStep, true},
DUP1: {0, Zero, true},
}
|
