-
Notifications
You must be signed in to change notification settings - Fork 115
/
oph_sysops.nim
222 lines (186 loc) · 6.95 KB
/
oph_sysops.nim
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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
# Nimbus
# Copyright (c) 2021-2024 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# https://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# https://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except
# according to those terms.
## EVM Opcode Handlers: System Operations
## ======================================
##
{.push raises: [].}
import
stew/assign2,
../../evm_errors,
../../computation,
../../memory,
../../stack,
../../types,
../gas_costs,
../op_codes,
../utils/utils_numeric,
./oph_defs,
./oph_helpers,
eth/common,
stint
when not defined(evmc_enabled):
import
../../state,
../../../db/ledger
# ------------------------------------------------------------------------------
# Private
# ------------------------------------------------------------------------------
proc returnOp(k: var VmCtx): EvmResultVoid =
## 0xf3, Halt execution returning output data.
let (startPos, size) = ? k.cpt.stack.popInt(2)
let (pos, len) = (startPos.cleanMemRef, size.cleanMemRef)
? k.cpt.opcodeGastCost(Return,
k.cpt.gasCosts[Return].m_handler(k.cpt.memory.len, pos, len),
reason = "RETURN")
k.cpt.memory.extend(pos, len)
assign(k.cpt.output, k.cpt.memory.read(pos, len))
ok()
proc revertOp(k: var VmCtx): EvmResultVoid =
## 0xfd, Halt execution reverting state changes but returning data
## and remaining gas.
let (startPos, size) = ? k.cpt.stack.popInt(2)
let (pos, len) = (startPos.cleanMemRef, size.cleanMemRef)
? k.cpt.opcodeGastCost(Revert,
k.cpt.gasCosts[Revert].m_handler(k.cpt.memory.len, pos, len),
reason = "REVERT")
k.cpt.memory.extend(pos, len)
assign(k.cpt.output, k.cpt.memory.read(pos, len))
# setError(msg, false) will signal cheap revert
k.cpt.setError(EVMC_REVERT, "REVERT opcode executed", false)
ok()
proc invalidOp(k: var VmCtx): EvmResultVoid =
err(opErr(InvalidInstruction))
# -----------
proc selfDestructOp(k: var VmCtx): EvmResultVoid =
## 0xff, Halt execution and register account for later deletion.
let cpt = k.cpt
let beneficiary = ? cpt.stack.popAddress()
when defined(evmc_enabled):
block:
cpt.selfDestruct(beneficiary)
else:
block:
cpt.selfDestruct(beneficiary)
ok()
proc selfDestructEIP150Op(k: var VmCtx): EvmResultVoid =
## selfDestructEip150 (auto generated comment)
let cpt = k.cpt
let beneficiary = ? cpt.stack.popAddress()
block:
let gasParams = GasParams(
kind: SelfDestruct,
sd_condition: not cpt.accountExists(beneficiary))
let res = ? cpt.gasCosts[SelfDestruct].c_handler(0.u256, gasParams)
? cpt.opcodeGastCost(SelfDestruct,
res.gasCost, reason = "SELFDESTRUCT EIP150")
cpt.selfDestruct(beneficiary)
ok()
proc selfDestructEIP161Op(k: var VmCtx): EvmResultVoid =
## selfDestructEip161 (auto generated comment)
let cpt = k.cpt
? checkInStaticContext(cpt)
let beneficiary = ? cpt.stack.popAddress()
block:
let
isDead = not cpt.accountExists(beneficiary)
balance = cpt.getBalance(cpt.msg.contractAddress)
let gasParams = GasParams(
kind: SelfDestruct,
sd_condition: isDead and not balance.isZero)
let res = ? cpt.gasCosts[SelfDestruct].c_handler(0.u256, gasParams)
? cpt.opcodeGastCost(SelfDestruct,
res.gasCost, reason = "SELFDESTRUCT EIP161")
cpt.selfDestruct(beneficiary)
ok()
proc selfDestructEIP2929Op(k: var VmCtx): EvmResultVoid =
## selfDestructEIP2929 (auto generated comment)
let cpt = k.cpt
? checkInStaticContext(cpt)
let beneficiary = ? cpt.stack.popAddress()
block:
let
isDead = not cpt.accountExists(beneficiary)
balance = cpt.getBalance(cpt.msg.contractAddress)
let
gasParams = GasParams(
kind: SelfDestruct,
sd_condition: isDead and not balance.isZero)
res = ? cpt.gasCosts[SelfDestruct].c_handler(0.u256, gasParams)
var gasCost = res.gasCost
when evmc_enabled:
if cpt.host.accessAccount(beneficiary) == EVMC_ACCESS_COLD:
gasCost = gasCost + ColdAccountAccessCost
else:
cpt.vmState.mutateStateDB:
if not db.inAccessList(beneficiary):
db.accessList(beneficiary)
gasCost = gasCost + ColdAccountAccessCost
? cpt.opcodeGastCost(SelfDestruct,
gasCost, reason = "SELFDESTRUCT EIP2929")
cpt.selfDestruct(beneficiary)
ok()
# ------------------------------------------------------------------------------
# Public, op exec table entries
# ------------------------------------------------------------------------------
const
VmOpExecSysOp*: seq[VmOpExec] = @[
(opCode: Return, ## 0xf3, Halt execution returning output data.
forks: VmOpAllForks,
name: "returnOp",
info: "Halt execution returning output data",
exec: (prep: VmOpIgnore,
run: returnOp,
post: VmOpIgnore)),
(opCode: Revert, ## 0xfd, Halt and revert state changes
forks: VmOpByzantiumAndLater,
name: "revert",
info: "Halt execution reverting state changes but returning data " &
"and remaining gas",
exec: (prep: VmOpIgnore,
run: revertOp,
post: VmOpIgnore)),
(opCode: Invalid, ## 0xfe, invalid instruction.
forks: VmOpAllForks,
name: "invalidInstruction",
info: "Designated invalid instruction",
exec: (prep: VmOpIgnore,
run: invalidOp,
post: VmOpIgnore)),
(opCode: SelfDestruct, ## 0xff, Halt execution, prep for later deletion
forks: VmOpAllForks - VmOpTangerineAndLater,
name: "selfDestruct",
info: "Halt execution and register account for later deletion",
exec: (prep: VmOpIgnore,
run: selfDestructOp,
post: VmOpIgnore)),
(opCode: SelfDestruct, ## 0xff, EIP150: self destruct, Tangerine
forks: VmOpTangerineAndLater - VmOpSpuriousAndLater,
name: "selfDestructEIP150",
info: "EIP150: Halt execution and register account for later deletion",
exec: (prep: VmOpIgnore,
run: selfDestructEIP150Op,
post: VmOpIgnore)),
(opCode: SelfDestruct, ## 0xff, EIP161: self destruct, Spurious and later
forks: VmOpSpuriousAndLater - VmOpBerlinAndLater,
name: "selfDestructEIP161",
info: "EIP161: Halt execution and register account for later deletion",
exec: (prep: VmOpIgnore,
run: selfDestructEIP161Op,
post: VmOpIgnore)),
(opCode: SelfDestruct, ## 0xff, EIP2929: self destruct, Berlin and later
forks: VmOpBerlinAndLater,
name: "selfDestructEIP2929",
info: "EIP2929: Halt execution and register account for later deletion",
exec: (prep: VmOpIgnore,
run: selfDestructEIP2929Op,
post: VmOpIgnore))]
# ------------------------------------------------------------------------------
# End
# ------------------------------------------------------------------------------