115 lines
3.2 KiB
Nim
115 lines
3.2 KiB
Nim
# Nimbus
|
|
# Copyright (c) 2018-2024 Status Research & Development GmbH
|
|
# Licensed under either of
|
|
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
|
|
# http://www.apache.org/licenses/LICENSE-2.0)
|
|
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
|
|
# http://opensource.org/licenses/MIT)
|
|
# at your option. This file may not be copied, modified, or distributed except
|
|
# according to those terms.
|
|
|
|
## EVM Opcode Handlers: Logging Operations
|
|
## =======================================
|
|
##
|
|
|
|
{.push raises: [].}
|
|
|
|
import
|
|
stew/assign2,
|
|
../../../constants,
|
|
../../evm_errors,
|
|
../../computation,
|
|
../../memory,
|
|
../../stack,
|
|
../../types,
|
|
../gas_costs,
|
|
../op_codes,
|
|
./oph_defs,
|
|
./oph_gen_handlers,
|
|
./oph_helpers,
|
|
eth/common,
|
|
sequtils,
|
|
stint
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Private, names & settings
|
|
# ------------------------------------------------------------------------------
|
|
|
|
proc fnName(n: int): string {.compileTime.} =
|
|
"log" & $n & "Op"
|
|
|
|
proc opName(n: int): string {.compileTime.} =
|
|
"Log" & $n
|
|
|
|
proc fnInfo(n: int): string {.compileTime.} =
|
|
var blurb = case n
|
|
of 1: "topic"
|
|
else: "topics"
|
|
"Append log record with " & $n & " " & blurb
|
|
|
|
|
|
proc logImpl(c: Computation, opcode: Op, topicCount: static int): EvmResultVoid =
|
|
static: doAssert(topicCount in 0 .. 4)
|
|
? checkInStaticContext(c)
|
|
const stackSize = 2 + topicCount
|
|
? c.stack.lsCheck(stackSize)
|
|
let
|
|
memPos = c.stack.lsPeekMemRef(^1)
|
|
len = c.stack.lsPeekMemRef(^2)
|
|
|
|
if memPos < 0 or len < 0:
|
|
return err(opErr(OutOfBounds))
|
|
|
|
? c.opcodeGasCost(opcode,
|
|
c.gasCosts[opcode].m_handler(c.memory.len, memPos, len),
|
|
reason = "Memory expansion, Log topic and data gas cost")
|
|
c.memory.extend(memPos, len)
|
|
|
|
when evmc_enabled:
|
|
var topics: array[4, evmc_bytes32]
|
|
for i in 0 ..< topicCount:
|
|
topics[i].bytes = c.stack.lsPeekTopic(^(i+3))
|
|
|
|
c.host.emitLog(c.msg.contractAddress,
|
|
c.memory.read(memPos, len),
|
|
topics[0].addr, topicCount)
|
|
else:
|
|
var log: Log
|
|
log.topics = newSeqOfCap[Topic](topicCount)
|
|
for i in 0 ..< topicCount:
|
|
log.topics.add Bytes32 c.stack.lsPeekTopic(^(i+3))
|
|
|
|
assign(log.data, c.memory.read(memPos, len))
|
|
log.address = c.msg.contractAddress
|
|
c.addLogEntry(log)
|
|
|
|
c.stack.lsShrink(stackSize)
|
|
ok()
|
|
|
|
const
|
|
inxRange = toSeq(0 .. 4)
|
|
logOpArg = block:
|
|
var rc: array[inxRange.len + 1, Op]
|
|
for n in inxRange:
|
|
rc[n] = Op(Log0.int + n)
|
|
rc
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Private, op handlers implementation
|
|
# ------------------------------------------------------------------------------
|
|
|
|
proc wrapperFn(cpt: VmCpt; n: static int): EvmResultVoid =
|
|
cpt.logImpl(logOpArg[n], n)
|
|
|
|
genOphHandlers fnName, fnInfo, inxRange, wrapperFn
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# Public, op exec table entries
|
|
# ------------------------------------------------------------------------------
|
|
|
|
genOphList fnName, fnInfo, inxRange, "VmOpExecLog", opName
|
|
|
|
# ------------------------------------------------------------------------------
|
|
# End
|
|
# ------------------------------------------------------------------------------
|