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| author | Nick Johnson <arachnid@notdot.net> | 2017-01-17 19:19:50 +0800 |
|---|---|---|
| committer | Felix Lange <fjl@users.noreply.github.com> | 2017-01-17 19:19:50 +0800 |
| commit | 17d92233d9e64b642fed9a992556f7ff7d6fda18 (patch) | |
| tree | e655a85d9d31c3377aef21b441c8b2c44df0aeff /core/vm | |
| parent | 26d385c18b5eb003d9a69ff618c78acbe594db44 (diff) | |
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cmd/geth, core: add support for recording SHA3 preimages (#3543)
Diffstat (limited to 'core/vm')
| -rw-r--r-- | core/vm/instructions.go | 7 | ||||
| -rw-r--r-- | core/vm/interface.go | 1 | ||||
| -rw-r--r-- | core/vm/noop.go | 1 | ||||
| -rw-r--r-- | core/vm/vm.go | 2 |
4 files changed, 10 insertions, 1 deletions
diff --git a/core/vm/instructions.go b/core/vm/instructions.go index 5bfa73a30..3b1b06cca 100644 --- a/core/vm/instructions.go +++ b/core/vm/instructions.go @@ -247,7 +247,12 @@ func opMulmod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *S func opSha3(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) { offset, size := stack.pop(), stack.pop() - hash := crypto.Keccak256(memory.Get(offset.Int64(), size.Int64())) + data := memory.Get(offset.Int64(), size.Int64()) + hash := crypto.Keccak256(data) + + if env.vmConfig.EnablePreimageRecording { + env.StateDB.AddPreimage(common.BytesToHash(hash), data) + } stack.push(common.BytesToBig(hash)) return nil, nil diff --git a/core/vm/interface.go b/core/vm/interface.go index 8617b2d0f..6f15112ee 100644 --- a/core/vm/interface.go +++ b/core/vm/interface.go @@ -60,6 +60,7 @@ type StateDB interface { Snapshot() int AddLog(*types.Log) + AddPreimage(common.Hash, []byte) } // Account represents a contract or basic ethereum account. diff --git a/core/vm/noop.go b/core/vm/noop.go index ef6837273..7835eeaf3 100644 --- a/core/vm/noop.go +++ b/core/vm/noop.go @@ -67,3 +67,4 @@ func (NoopStateDB) Empty(common.Address) bool { return f func (NoopStateDB) RevertToSnapshot(int) {} func (NoopStateDB) Snapshot() int { return 0 } func (NoopStateDB) AddLog(*types.Log) {} +func (NoopStateDB) AddPreimage(common.Hash, []byte) {} diff --git a/core/vm/vm.go b/core/vm/vm.go index 56081f12c..a5f48750d 100644 --- a/core/vm/vm.go +++ b/core/vm/vm.go @@ -44,6 +44,8 @@ type Config struct { NoRecursion bool // Disable gas metering DisableGasMetering bool + // Enable recording of SHA3/keccak preimages + EnablePreimageRecording bool // JumpTable contains the EVM instruction table. This // may me left uninitialised and will be set the default // table. |