8ba491b6b4
* Improve the correctness of Eth's trace_block
- Improve encoding/decoding of parameters and return values:
- Encode "native" parameters and return values with Solidity ABI.
- Correctly decode parameters to "create" calls.
- Use the correct (ish) output for "create" calls.
- Handle all forms of "create".
- Make robust with respect to reverts:
- Use the actor ID/address from the trace instead of looking it up in
the state-tree (may not exist in the state-tree due to a revert).
- Gracefully handle failed actor/contract creation.
- Improve performance:
- We avoid looking anything up in the state-tree when translating the
trace, which should significantly improve performance.
- Improve code readability:
- Remove all "backtracking" logic.
- Use an "environment" struct to store temporary state instead of
attaching it to the trace.
- Fix random bugs:
- Fix an allocation bug in the "address" logic (need to set the
capacity before modifying the slice).
- Improved error checking/handling.
- Use correct types for `trace_block` action/results (create, call, etc.).
- And use the correct types for Result/Action structs instead of reusing the same "Call" action every time.
- Improve error messages.
83 lines
2.0 KiB
Go
83 lines
2.0 KiB
Go
package evm
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import (
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"github.com/ipfs/go-cid"
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"golang.org/x/xerrors"
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actorstypes "github.com/filecoin-project/go-state-types/actors"
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builtin12 "github.com/filecoin-project/go-state-types/builtin"
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"github.com/filecoin-project/go-state-types/cbor"
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"github.com/filecoin-project/go-state-types/exitcode"
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"github.com/filecoin-project/go-state-types/manifest"
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"github.com/filecoin-project/lotus/chain/actors"
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"github.com/filecoin-project/lotus/chain/actors/adt"
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"github.com/filecoin-project/lotus/chain/types"
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)
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var Methods = builtin12.MethodsEVM
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// See https://github.com/filecoin-project/builtin-actors/blob/6e781444cee5965278c46ef4ffe1fb1970f18d7d/actors/evm/src/lib.rs#L35-L42
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const (
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ErrReverted exitcode.ExitCode = iota + 33 // EVM exit codes start at 33
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ErrInvalidInstruction
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ErrUndefinedInstruction
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ErrStackUnderflow
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ErrStackOverflow
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ErrIllegalMemoryAccess
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ErrBadJumpdest
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ErrSelfdestructFailed
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)
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func Load(store adt.Store, act *types.Actor) (State, error) {
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if name, av, ok := actors.GetActorMetaByCode(act.Code); ok {
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if name != manifest.EvmKey {
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return nil, xerrors.Errorf("actor code is not evm: %s", name)
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}
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switch av {
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case actorstypes.Version10:
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return load10(store, act.Head)
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case actorstypes.Version11:
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return load11(store, act.Head)
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case actorstypes.Version12:
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return load12(store, act.Head)
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}
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}
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return nil, xerrors.Errorf("unknown actor code %s", act.Code)
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}
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func MakeState(store adt.Store, av actorstypes.Version, bytecode cid.Cid) (State, error) {
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switch av {
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case actorstypes.Version10:
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return make10(store, bytecode)
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case actorstypes.Version11:
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return make11(store, bytecode)
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case actorstypes.Version12:
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return make12(store, bytecode)
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default:
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return nil, xerrors.Errorf("evm actor only valid for actors v10 and above, got %d", av)
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}
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}
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type State interface {
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cbor.Marshaler
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Nonce() (uint64, error)
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IsAlive() (bool, error)
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GetState() interface{}
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GetBytecode() ([]byte, error)
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GetBytecodeCID() (cid.Cid, error)
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GetBytecodeHash() ([32]byte, error)
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}
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