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nimbus-eth1/nimbus/vm2/interpreter_dispatch.nim

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provide identical copy of vm folder => vm2, activated by make flag ENABLE_VM2=1 why: vm2 enabled by ENABLE_VM2=1 behaves as vm without ENABLE_EVMC=1 until it doesn't in some future fatch set. this leaves some wiggle room to work on a vm copy without degrading the original implementation. details: + additional make flag ENABLE_VM2=1 (or ENABLE_VM2=0 to explicitely disable) + when both flags ENABLE_EVMC=1 and ENABLE_VM2=1 are present, the former flag ENABLE_EVMC=1 takes precedence, this is implemented at the NIM compiler level for -d:evmc_enabled and -d:vm2_enabled
2021-04-08 14:52:10 +00:00
# Nimbus
# Copyright (c) 2018 Status Research & Development GmbH
# Licensed under either of
re-arrange functions from v2computation.nim and interpreter_dispatch.nim why: step towards breaking circular dependency details: some functions from v2computation.nim have been extracted into compu_helper.nim which does not explicitly back-import v2computation.nim. all non recursive op handlers now import this source file rather than v2computation.nim. recursive call/create op handler still need to import v2computation.nim. the executeOpcodes() function from interpreter_dispatch.nim has been moved to v2computation.nim which allows for <import> rather than <include> the interpreter_dispatch.nim source.
2021-04-20 15:39:32 +00:00
# * 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.
provide identical copy of vm folder => vm2, activated by make flag ENABLE_VM2=1 why: vm2 enabled by ENABLE_VM2=1 behaves as vm without ENABLE_EVMC=1 until it doesn't in some future fatch set. this leaves some wiggle room to work on a vm copy without degrading the original implementation. details: + additional make flag ENABLE_VM2=1 (or ENABLE_VM2=0 to explicitely disable) + when both flags ENABLE_EVMC=1 and ENABLE_VM2=1 are present, the former flag ENABLE_EVMC=1 takes precedence, this is implemented at the NIM compiler level for -d:evmc_enabled and -d:vm2_enabled
2021-04-08 14:52:10 +00:00
import
re-arrange functions from v2computation.nim and interpreter_dispatch.nim why: step towards breaking circular dependency details: some functions from v2computation.nim have been extracted into compu_helper.nim which does not explicitly back-import v2computation.nim. all non recursive op handlers now import this source file rather than v2computation.nim. recursive call/create op handler still need to import v2computation.nim. the executeOpcodes() function from interpreter_dispatch.nim has been moved to v2computation.nim which allows for <import> rather than <include> the interpreter_dispatch.nim source.
2021-04-20 15:39:32 +00:00
./compu_helper,
re-named v2gas_costs.nim to its original name v2gas_costs.nim why: the v2 prefix of the file name was used as a visual aid when comparing vm2 against vm sources
2021-04-21 08:06:46 +00:00
./interpreter/[gas_meter, op_handlers, op_handlers/oph_defs, gas_costs],
re-arrange functions from v2computation.nim and interpreter_dispatch.nim why: step towards breaking circular dependency details: some functions from v2computation.nim have been extracted into compu_helper.nim which does not explicitly back-import v2computation.nim. all non recursive op handlers now import this source file rather than v2computation.nim. recursive call/create op handler still need to import v2computation.nim. the executeOpcodes() function from interpreter_dispatch.nim has been moved to v2computation.nim which allows for <import> rather than <include> the interpreter_dispatch.nim source.
2021-04-20 15:39:32 +00:00
./code_stream,
./v2types,
chronicles
provide identical copy of vm folder => vm2, activated by make flag ENABLE_VM2=1 why: vm2 enabled by ENABLE_VM2=1 behaves as vm without ENABLE_EVMC=1 until it doesn't in some future fatch set. this leaves some wiggle room to work on a vm copy without degrading the original implementation. details: + additional make flag ENABLE_VM2=1 (or ENABLE_VM2=0 to explicitely disable) + when both flags ENABLE_EVMC=1 and ENABLE_VM2=1 are present, the former flag ENABLE_EVMC=1 takes precedence, this is implemented at the NIM compiler level for -d:evmc_enabled and -d:vm2_enabled
2021-04-08 14:52:10 +00:00
logScope:
topics = "vm opcode"
re-arrange functions from v2computation.nim and interpreter_dispatch.nim why: step towards breaking circular dependency details: some functions from v2computation.nim have been extracted into compu_helper.nim which does not explicitly back-import v2computation.nim. all non recursive op handlers now import this source file rather than v2computation.nim. recursive call/create op handler still need to import v2computation.nim. the executeOpcodes() function from interpreter_dispatch.nim has been moved to v2computation.nim which allows for <import> rather than <include> the interpreter_dispatch.nim source.
2021-04-20 15:39:32 +00:00
proc selectVM*(c: Computation, fork: Fork) {.gcsafe.} =
update handler prototype using call-by-reference argument why: this allows for passing back information which can eventually be used for reducing use of exceptions caveat: call/create currently needs to un-capture the call-by-reference (wrapper) argument using the Computation reference inside
2021-04-20 12:07:01 +00:00
var desc: Vm2Ctx
simplify interpreter_dispatch.nim code details: replace generated macro loop/switch by explicit call using the fork/op handler matrix (encapsulated via opHandlersRun() function)
2021-04-20 11:14:43 +00:00
if c.tracingEnabled:
c.prepareTracer()
while true:
c.instr = c.code.next()
update handler prototype using call-by-reference argument why: this allows for passing back information which can eventually be used for reducing use of exceptions caveat: call/create currently needs to un-capture the call-by-reference (wrapper) argument using the Computation reference inside
2021-04-20 12:07:01 +00:00
var op = c.instr
simplify interpreter_dispatch.nim code details: replace generated macro loop/switch by explicit call using the fork/op handler matrix (encapsulated via opHandlersRun() function)
2021-04-20 11:14:43 +00:00
if op == Stop:
trace "op: Stop"
if not c.code.atEnd() and c.tracingEnabled:
c.opIndex = c.traceOpCodeStarted(Stop)
c.traceOpCodeEnded(Stop, c.opIndex)
break
if c.tracingEnabled:
c.opIndex = c.traceOpCodeStarted(op)
if BaseGasCosts[op].kind == GckFixed:
c.gasMeter.consumeGas(c.gasCosts[op].cost, reason = $op)
update handler prototype using call-by-reference argument why: this allows for passing back information which can eventually be used for reducing use of exceptions caveat: call/create currently needs to un-capture the call-by-reference (wrapper) argument using the Computation reference inside
2021-04-20 12:07:01 +00:00
desc.cpt = c
simplify interpreter_dispatch.nim code details: replace generated macro loop/switch by explicit call using the fork/op handler matrix (encapsulated via opHandlersRun() function)
2021-04-20 11:14:43 +00:00
opHandlersRun(fork, op, desc)
if c.tracingEnabled:
c.traceOpCodeEnded(op, c.opIndex)
case op
of Create, Create2, Call, CallCode, DelegateCall, StaticCall:
if not c.continuation.isNil:
update handler prototype using call-by-reference argument why: this allows for passing back information which can eventually be used for reducing use of exceptions caveat: call/create currently needs to un-capture the call-by-reference (wrapper) argument using the Computation reference inside
2021-04-20 12:07:01 +00:00
break
simplify interpreter_dispatch.nim code details: replace generated macro loop/switch by explicit call using the fork/op handler matrix (encapsulated via opHandlersRun() function)
2021-04-20 11:14:43 +00:00
of Return, Revert, SelfDestruct:
break
else:
discard