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-rw-r--r--core/vm/vm.go60
1 files changed, 33 insertions, 27 deletions
diff --git a/core/vm/vm.go b/core/vm/vm.go
index 56aca6912..3521839df 100644
--- a/core/vm/vm.go
+++ b/core/vm/vm.go
@@ -30,10 +30,17 @@ import (
// Config are the configuration options for the EVM
type Config struct {
- Debug bool
+ // Debug enabled debugging EVM options
+ Debug bool
+ // EnableJit enabled the JIT VM
EnableJit bool
- ForceJit bool
- Tracer Tracer
+ // ForceJit forces the JIT VM
+ ForceJit bool
+ // Tracer is the op code logger
+ Tracer Tracer
+ // NoRecursion disabled EVM call, callcode,
+ // delegate call and create.
+ NoRecursion bool
}
// EVM is used to run Ethereum based contracts and will utilise the
@@ -41,26 +48,26 @@ type Config struct {
// The EVM will run the byte code VM or JIT VM based on the passed
// configuration.
type EVM struct {
- env Environment
+ env *Environment
jumpTable vmJumpTable
cfg Config
gasTable params.GasTable
}
// New returns a new instance of the EVM.
-func New(env Environment, cfg Config) *EVM {
+func New(env *Environment, cfg Config) *EVM {
return &EVM{
env: env,
- jumpTable: newJumpTable(env.ChainConfig(), env.BlockNumber()),
+ jumpTable: newJumpTable(env.ChainConfig(), env.BlockNumber),
cfg: cfg,
- gasTable: env.ChainConfig().GasTable(env.BlockNumber()),
+ gasTable: env.ChainConfig().GasTable(env.BlockNumber),
}
}
// Run loops and evaluates the contract's code with the given input data
func (evm *EVM) Run(contract *Contract, input []byte) (ret []byte, err error) {
- evm.env.SetDepth(evm.env.Depth() + 1)
- defer evm.env.SetDepth(evm.env.Depth() - 1)
+ evm.env.Depth++
+ defer func() { evm.env.Depth-- }()
if contract.CodeAddr != nil {
if p := Precompiled[contract.CodeAddr.Str()]; p != nil {
@@ -117,10 +124,9 @@ func (evm *EVM) Run(contract *Contract, input []byte) (ret []byte, err error) {
code = contract.Code
instrCount = 0
- op OpCode // current opcode
- mem = NewMemory() // bound memory
- stack = newstack() // local stack
- statedb = evm.env.Db() // current state
+ op OpCode // current opcode
+ mem = NewMemory() // bound memory
+ stack = newstack() // local stack
// For optimisation reason we're using uint64 as the program counter.
// It's theoretically possible to go above 2^64. The YP defines the PC to be uint256. Practically much less so feasible.
pc = uint64(0) // program counter
@@ -146,7 +152,7 @@ func (evm *EVM) Run(contract *Contract, input []byte) (ret []byte, err error) {
// User defer pattern to check for an error and, based on the error being nil or not, use all gas and return.
defer func() {
if err != nil && evm.cfg.Debug {
- evm.cfg.Tracer.CaptureState(evm.env, pc, op, contract.Gas, cost, mem, stack, contract, evm.env.Depth(), err)
+ evm.cfg.Tracer.CaptureState(evm.env, pc, op, contract.Gas, cost, mem, stack, contract, evm.env.Depth, err)
}
}()
@@ -174,7 +180,7 @@ func (evm *EVM) Run(contract *Contract, input []byte) (ret []byte, err error) {
op = contract.GetOp(pc)
//fmt.Printf("OP %d %v\n", op, op)
// calculate the new memory size and gas price for the current executing opcode
- newMemSize, cost, err = calculateGasAndSize(evm.gasTable, evm.env, contract, caller, op, statedb, mem, stack)
+ newMemSize, cost, err = calculateGasAndSize(evm.gasTable, evm.env, contract, caller, op, mem, stack)
if err != nil {
return nil, err
}
@@ -189,7 +195,7 @@ func (evm *EVM) Run(contract *Contract, input []byte) (ret []byte, err error) {
mem.Resize(newMemSize.Uint64())
// Add a log message
if evm.cfg.Debug {
- err = evm.cfg.Tracer.CaptureState(evm.env, pc, op, contract.Gas, cost, mem, stack, contract, evm.env.Depth(), nil)
+ err = evm.cfg.Tracer.CaptureState(evm.env, pc, op, contract.Gas, cost, mem, stack, contract, evm.env.Depth, nil)
if err != nil {
return nil, err
}
@@ -242,7 +248,7 @@ func (evm *EVM) Run(contract *Contract, input []byte) (ret []byte, err error) {
// calculateGasAndSize calculates the required given the opcode and stack items calculates the new memorysize for
// the operation. This does not reduce gas or resizes the memory.
-func calculateGasAndSize(gasTable params.GasTable, env Environment, contract *Contract, caller ContractRef, op OpCode, statedb Database, mem *Memory, stack *Stack) (*big.Int, *big.Int, error) {
+func calculateGasAndSize(gasTable params.GasTable, env *Environment, contract *Contract, caller ContractRef, op OpCode, mem *Memory, stack *Stack) (*big.Int, *big.Int, error) {
var (
gas = new(big.Int)
newMemSize *big.Int = new(big.Int)
@@ -260,21 +266,21 @@ func calculateGasAndSize(gasTable params.GasTable, env Environment, contract *Co
gas.Set(gasTable.Suicide)
var (
address = common.BigToAddress(stack.data[len(stack.data)-1])
- eip158 = env.ChainConfig().IsEIP158(env.BlockNumber())
+ eip158 = env.ChainConfig().IsEIP158(env.BlockNumber)
)
if eip158 {
// if empty and transfers value
- if env.Db().Empty(address) && statedb.GetBalance(contract.Address()).BitLen() > 0 {
+ if env.StateDB.Empty(address) && env.StateDB.GetBalance(contract.Address()).BitLen() > 0 {
gas.Add(gas, gasTable.CreateBySuicide)
}
- } else if !env.Db().Exist(address) {
+ } else if !env.StateDB.Exist(address) {
gas.Add(gas, gasTable.CreateBySuicide)
}
}
- if !statedb.HasSuicided(contract.Address()) {
- statedb.AddRefund(params.SuicideRefundGas)
+ if !env.StateDB.HasSuicided(contract.Address()) {
+ env.StateDB.AddRefund(params.SuicideRefundGas)
}
case EXTCODESIZE:
gas.Set(gasTable.ExtcodeSize)
@@ -323,7 +329,7 @@ func calculateGasAndSize(gasTable params.GasTable, env Environment, contract *Co
var g *big.Int
y, x := stack.data[stack.len()-2], stack.data[stack.len()-1]
- val := statedb.GetState(contract.Address(), common.BigToHash(x))
+ val := env.StateDB.GetState(contract.Address(), common.BigToHash(x))
// This checks for 3 scenario's and calculates gas accordingly
// 1. From a zero-value address to a non-zero value (NEW VALUE)
@@ -333,7 +339,7 @@ func calculateGasAndSize(gasTable params.GasTable, env Environment, contract *Co
// 0 => non 0
g = params.SstoreSetGas
} else if !common.EmptyHash(val) && common.EmptyHash(common.BigToHash(y)) {
- statedb.AddRefund(params.SstoreRefundGas)
+ env.StateDB.AddRefund(params.SstoreRefundGas)
g = params.SstoreClearGas
} else {
@@ -394,13 +400,13 @@ func calculateGasAndSize(gasTable params.GasTable, env Environment, contract *Co
if op == CALL {
var (
address = common.BigToAddress(stack.data[len(stack.data)-2])
- eip158 = env.ChainConfig().IsEIP158(env.BlockNumber())
+ eip158 = env.ChainConfig().IsEIP158(env.BlockNumber)
)
if eip158 {
- if env.Db().Empty(address) && transfersValue {
+ if env.StateDB.Empty(address) && transfersValue {
gas.Add(gas, params.CallNewAccountGas)
}
- } else if !env.Db().Exist(address) {
+ } else if !env.StateDB.Exist(address) {
gas.Add(gas, params.CallNewAccountGas)
}
}
generated by cgit (git 2.34.1) at 2024-11-15 08:20:30 +0800