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eth/tracers: prestate lookup EIP7702 delegation account (#32080)
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Implement https://github.com/ethereum/go-ethereum/issues/32078 
Parse and lookup the delegation account if EIP7702 is enabled.

---------

Signed-off-by: jsvisa <delweng@gmail.com>
This commit is contained in:
Delweng 2025-06-24 13:52:18 +08:00 committed by GitHub
parent b62c0c67fa
commit 0b21c4a633
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GPG key ID: B5690EEEBB952194
3 changed files with 169 additions and 14 deletions
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135
eth/tracers/internal/tracetest/testdata/prestate_tracer/7702_delegate.json vendored Normal file
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File diff suppressed because one or more lines are too long

4
eth/tracers/internal/tracetest/testdata/prestate_tracer/setcode_tx.json vendored
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@ -81,6 +81,10 @@
"0x0000000000000000000000000000000000000000": { "0x0000000000000000000000000000000000000000": {
"balance": "0x272e0528" "balance": "0x272e0528"
}, },
"0x000000000000000000000000000000000000bbbb": {
"balance": "0x0",
"code": "0x6042604255"
},
"0x703c4b2bd70c169f5717101caee543299fc946c7": { "0x703c4b2bd70c169f5717101caee543299fc946c7": {
"balance": "0xde0b6b3a7640000", "balance": "0xde0b6b3a7640000",
"storage": { "storage": {

44
eth/tracers/native/prestate.go
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@ -61,15 +61,16 @@ type accountMarshaling struct {
} }
type prestateTracer struct { type prestateTracer struct {
env *tracing.VMContext env *tracing.VMContext
pre stateMap pre stateMap
post stateMap post stateMap
to common.Address to common.Address
config prestateTracerConfig config prestateTracerConfig
interrupt atomic.Bool // Atomic flag to signal execution interruption chainConfig *params.ChainConfig
reason error // Textual reason for the interruption interrupt atomic.Bool // Atomic flag to signal execution interruption
created map[common.Address]bool reason error // Textual reason for the interruption
deleted map[common.Address]bool created map[common.Address]bool
deleted map[common.Address]bool
} }
type prestateTracerConfig struct { type prestateTracerConfig struct {
@ -90,11 +91,12 @@ func newPrestateTracer(ctx *tracers.Context, cfg json.RawMessage, chainConfig *p
return nil, errors.New("cannot use diffMode with includeEmpty") return nil, errors.New("cannot use diffMode with includeEmpty")
} }
t := &prestateTracer{ t := &prestateTracer{
pre: stateMap{}, pre: stateMap{},
post: stateMap{}, post: stateMap{},
config: config, config: config,
created: make(map[common.Address]bool), chainConfig: chainConfig,
deleted: make(map[common.Address]bool), created: make(map[common.Address]bool),
deleted: make(map[common.Address]bool),
} }
return &tracers.Tracer{ return &tracers.Tracer{
Hooks: &tracing.Hooks{ Hooks: &tracing.Hooks{
@ -133,6 +135,13 @@ func (t *prestateTracer) OnOpcode(pc uint64, opcode byte, gas, cost uint64, scop
case stackLen >= 5 && (op == vm.DELEGATECALL || op == vm.CALL || op == vm.STATICCALL || op == vm.CALLCODE): case stackLen >= 5 && (op == vm.DELEGATECALL || op == vm.CALL || op == vm.STATICCALL || op == vm.CALLCODE):
addr := common.Address(stackData[stackLen-2].Bytes20()) addr := common.Address(stackData[stackLen-2].Bytes20())
t.lookupAccount(addr) t.lookupAccount(addr)
// Lookup the delegation target
if t.chainConfig.IsPrague(t.env.BlockNumber, t.env.Time) {
code := t.env.StateDB.GetCode(addr)
if target, ok := types.ParseDelegation(code); ok {
t.lookupAccount(target)
}
}
case op == vm.CREATE: case op == vm.CREATE:
nonce := t.env.StateDB.GetNonce(caller) nonce := t.env.StateDB.GetNonce(caller)
addr := crypto.CreateAddress(caller, nonce) addr := crypto.CreateAddress(caller, nonce)
@ -161,6 +170,13 @@ func (t *prestateTracer) OnTxStart(env *tracing.VMContext, tx *types.Transaction
t.created[t.to] = true t.created[t.to] = true
} else { } else {
t.to = *tx.To() t.to = *tx.To()
// Lookup the delegation target
if t.chainConfig.IsPrague(t.env.BlockNumber, t.env.Time) {
code := t.env.StateDB.GetCode(t.to)
if target, ok := types.ParseDelegation(code); ok {
t.lookupAccount(target)
}
}
} }
t.lookupAccount(from) t.lookupAccount(from)