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-rw-r--r--core/vm/instructions.go356
1 files changed, 165 insertions, 191 deletions
diff --git a/core/vm/instructions.go b/core/vm/instructions.go
index 871c09e83..2839b7109 100644
--- a/core/vm/instructions.go
+++ b/core/vm/instructions.go
@@ -26,128 +26,39 @@ import (
"github.com/ethereum/go-ethereum/params"
)
-type programInstruction interface {
- // executes the program instruction and allows the instruction to modify the state of the program
- do(program *Program, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) ([]byte, error)
- // returns whether the program instruction halts the execution of the JIT
- halts() bool
- // Returns the current op code (debugging purposes)
- Op() OpCode
-}
-
-type instrFn func(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack)
-
-type instruction struct {
- op OpCode
- pc uint64
- fn instrFn
- data *big.Int
-
- gas *big.Int
- spop int
- spush int
-
- returns bool
-}
-
-func jump(mapping map[uint64]uint64, destinations map[uint64]struct{}, contract *Contract, to *big.Int) (uint64, error) {
- if !validDest(destinations, to) {
- nop := contract.GetOp(to.Uint64())
- return 0, fmt.Errorf("invalid jump destination (%v) %v", nop, to)
- }
-
- return mapping[to.Uint64()], nil
-}
-
-func (instr instruction) do(program *Program, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
- // calculate the new memory size and gas price for the current executing opcode
- newMemSize, cost, err := jitCalculateGasAndSize(env, contract, instr, memory, stack)
- if err != nil {
- return nil, err
- }
-
- // Use the calculated gas. When insufficient gas is present, use all gas and return an
- // Out Of Gas error
- if !contract.UseGas(cost) {
- return nil, OutOfGasError
- }
- // Resize the memory calculated previously
- memory.Resize(newMemSize.Uint64())
-
- // These opcodes return an argument and are therefor handled
- // differently from the rest of the opcodes
- switch instr.op {
- case JUMP:
- if pos, err := jump(program.mapping, program.destinations, contract, stack.pop()); err != nil {
- return nil, err
- } else {
- *pc = pos
- return nil, nil
- }
- case JUMPI:
- pos, cond := stack.pop(), stack.pop()
- if cond.Cmp(common.BigTrue) >= 0 {
- if pos, err := jump(program.mapping, program.destinations, contract, pos); err != nil {
- return nil, err
- } else {
- *pc = pos
- return nil, nil
- }
- }
- case RETURN:
- offset, size := stack.pop(), stack.pop()
- return memory.GetPtr(offset.Int64(), size.Int64()), nil
- default:
- if instr.fn == nil {
- return nil, fmt.Errorf("Invalid opcode 0x%x", instr.op)
- }
- instr.fn(instr, pc, env, contract, memory, stack)
- }
- *pc++
- return nil, nil
-}
-
-func (instr instruction) halts() bool {
- return instr.returns
-}
-
-func (instr instruction) Op() OpCode {
- return instr.op
-}
-
-func opStaticJump(instr instruction, pc *uint64, ret *big.Int, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
- ret.Set(instr.data)
-}
-
-func opAdd(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opAdd(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
stack.push(U256(x.Add(x, y)))
+ return nil, nil
}
-func opSub(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSub(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
stack.push(U256(x.Sub(x, y)))
+ return nil, nil
}
-func opMul(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opMul(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
stack.push(U256(x.Mul(x, y)))
+ return nil, nil
}
-func opDiv(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opDiv(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
if y.Cmp(common.Big0) != 0 {
stack.push(U256(x.Div(x, y)))
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opSdiv(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSdiv(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := S256(stack.pop()), S256(stack.pop())
if y.Cmp(common.Big0) == 0 {
stack.push(new(big.Int))
- return
+ return nil, nil
} else {
n := new(big.Int)
if new(big.Int).Mul(x, y).Cmp(common.Big0) < 0 {
@@ -161,18 +72,20 @@ func opSdiv(instr instruction, pc *uint64, env *Environment, contract *Contract,
stack.push(U256(res))
}
+ return nil, nil
}
-func opMod(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opMod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
if y.Cmp(common.Big0) == 0 {
stack.push(new(big.Int))
} else {
stack.push(U256(x.Mod(x, y)))
}
+ return nil, nil
}
-func opSmod(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSmod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := S256(stack.pop()), S256(stack.pop())
if y.Cmp(common.Big0) == 0 {
@@ -190,14 +103,16 @@ func opSmod(instr instruction, pc *uint64, env *Environment, contract *Contract,
stack.push(U256(res))
}
+ return nil, nil
}
-func opExp(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opExp(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
base, exponent := stack.pop(), stack.pop()
stack.push(math.Exp(base, exponent))
+ return nil, nil
}
-func opSignExtend(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSignExtend(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
back := stack.pop()
if back.Cmp(big.NewInt(31)) < 0 {
bit := uint(back.Uint64()*8 + 7)
@@ -212,80 +127,91 @@ func opSignExtend(instr instruction, pc *uint64, env *Environment, contract *Con
stack.push(U256(num))
}
+ return nil, nil
}
-func opNot(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opNot(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x := stack.pop()
stack.push(U256(x.Not(x)))
+ return nil, nil
}
-func opLt(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opLt(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
if x.Cmp(y) < 0 {
stack.push(big.NewInt(1))
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opGt(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opGt(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
if x.Cmp(y) > 0 {
stack.push(big.NewInt(1))
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opSlt(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSlt(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := S256(stack.pop()), S256(stack.pop())
if x.Cmp(S256(y)) < 0 {
stack.push(big.NewInt(1))
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opSgt(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSgt(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := S256(stack.pop()), S256(stack.pop())
if x.Cmp(y) > 0 {
stack.push(big.NewInt(1))
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opEq(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opEq(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
if x.Cmp(y) == 0 {
stack.push(big.NewInt(1))
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opIszero(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opIszero(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x := stack.pop()
if x.Cmp(common.Big0) > 0 {
stack.push(new(big.Int))
} else {
stack.push(big.NewInt(1))
}
+ return nil, nil
}
-func opAnd(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opAnd(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
stack.push(x.And(x, y))
+ return nil, nil
}
-func opOr(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opOr(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
stack.push(x.Or(x, y))
+ return nil, nil
}
-func opXor(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opXor(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
stack.push(x.Xor(x, y))
+ return nil, nil
}
-func opByte(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opByte(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
th, val := stack.pop(), stack.pop()
if th.Cmp(big.NewInt(32)) < 0 {
byte := big.NewInt(int64(common.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
@@ -293,8 +219,9 @@ func opByte(instr instruction, pc *uint64, env *Environment, contract *Contract,
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opAddmod(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opAddmod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y, z := stack.pop(), stack.pop(), stack.pop()
if z.Cmp(Zero) > 0 {
add := x.Add(x, y)
@@ -303,8 +230,9 @@ func opAddmod(instr instruction, pc *uint64, env *Environment, contract *Contrac
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opMulmod(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opMulmod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y, z := stack.pop(), stack.pop(), stack.pop()
if z.Cmp(Zero) > 0 {
mul := x.Mul(x, y)
@@ -313,67 +241,79 @@ func opMulmod(instr instruction, pc *uint64, env *Environment, contract *Contrac
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opSha3(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+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()))
stack.push(common.BytesToBig(hash))
+ return nil, nil
}
-func opAddress(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opAddress(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(common.Bytes2Big(contract.Address().Bytes()))
+ return nil, nil
}
-func opBalance(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opBalance(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
addr := common.BigToAddress(stack.pop())
balance := env.StateDB.GetBalance(addr)
stack.push(new(big.Int).Set(balance))
+ return nil, nil
}
-func opOrigin(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opOrigin(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(env.Origin.Big())
+ return nil, nil
}
-func opCaller(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCaller(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(contract.Caller().Big())
+ return nil, nil
}
-func opCallValue(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCallValue(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(new(big.Int).Set(contract.value))
+ return nil, nil
}
-func opCalldataLoad(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCalldataLoad(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(common.Bytes2Big(getData(contract.Input, stack.pop(), common.Big32)))
+ return nil, nil
}
-func opCalldataSize(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCalldataSize(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(big.NewInt(int64(len(contract.Input))))
+ return nil, nil
}
-func opCalldataCopy(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCalldataCopy(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var (
mOff = stack.pop()
cOff = stack.pop()
l = stack.pop()
)
memory.Set(mOff.Uint64(), l.Uint64(), getData(contract.Input, cOff, l))
+ return nil, nil
}
-func opExtCodeSize(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opExtCodeSize(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
addr := common.BigToAddress(stack.pop())
l := big.NewInt(int64(env.StateDB.GetCodeSize(addr)))
stack.push(l)
+ return nil, nil
}
-func opCodeSize(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCodeSize(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
l := big.NewInt(int64(len(contract.Code)))
stack.push(l)
+ return nil, nil
}
-func opCodeCopy(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCodeCopy(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var (
mOff = stack.pop()
cOff = stack.pop()
@@ -382,9 +322,10 @@ func opCodeCopy(instr instruction, pc *uint64, env *Environment, contract *Contr
codeCopy := getData(contract.Code, cOff, l)
memory.Set(mOff.Uint64(), l.Uint64(), codeCopy)
+ return nil, nil
}
-func opExtCodeCopy(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opExtCodeCopy(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var (
addr = common.BigToAddress(stack.pop())
mOff = stack.pop()
@@ -394,13 +335,15 @@ func opExtCodeCopy(instr instruction, pc *uint64, env *Environment, contract *Co
codeCopy := getData(env.StateDB.GetCode(addr), cOff, l)
memory.Set(mOff.Uint64(), l.Uint64(), codeCopy)
+ return nil, nil
}
-func opGasprice(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opGasprice(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(new(big.Int).Set(env.GasPrice))
+ return nil, nil
}
-func opBlockhash(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opBlockhash(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
num := stack.pop()
n := new(big.Int).Sub(env.BlockNumber, common.Big257)
@@ -409,106 +352,115 @@ func opBlockhash(instr instruction, pc *uint64, env *Environment, contract *Cont
} else {
stack.push(new(big.Int))
}
+ return nil, nil
}
-func opCoinbase(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCoinbase(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(env.Coinbase.Big())
+ return nil, nil
}
-func opTimestamp(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opTimestamp(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(U256(new(big.Int).Set(env.Time)))
+ return nil, nil
}
-func opNumber(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opNumber(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(U256(new(big.Int).Set(env.BlockNumber)))
+ return nil, nil
}
-func opDifficulty(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opDifficulty(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(U256(new(big.Int).Set(env.Difficulty)))
+ return nil, nil
}
-func opGasLimit(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opGasLimit(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(U256(new(big.Int).Set(env.GasLimit)))
+ return nil, nil
}
-func opPop(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opPop(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.pop()
+ return nil, nil
}
-func opPush(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
- stack.push(new(big.Int).Set(instr.data))
-}
-
-func opDup(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
- stack.dup(int(instr.data.Int64()))
-}
-
-func opSwap(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
- stack.swap(int(instr.data.Int64()))
-}
-
-func opLog(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
- n := int(instr.data.Int64())
- topics := make([]common.Hash, n)
- mStart, mSize := stack.pop(), stack.pop()
- for i := 0; i < n; i++ {
- topics[i] = common.BigToHash(stack.pop())
- }
-
- d := memory.Get(mStart.Int64(), mSize.Int64())
- log := NewLog(contract.Address(), topics, d, env.BlockNumber.Uint64())
- env.StateDB.AddLog(log)
-}
-
-func opMload(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opMload(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
offset := stack.pop()
val := common.BigD(memory.Get(offset.Int64(), 32))
stack.push(val)
+ return nil, nil
}
-func opMstore(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opMstore(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
// pop value of the stack
mStart, val := stack.pop(), stack.pop()
memory.Set(mStart.Uint64(), 32, common.BigToBytes(val, 256))
+ return nil, nil
}
-func opMstore8(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opMstore8(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
off, val := stack.pop().Int64(), stack.pop().Int64()
memory.store[off] = byte(val & 0xff)
+ return nil, nil
}
-func opSload(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSload(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
loc := common.BigToHash(stack.pop())
val := env.StateDB.GetState(contract.Address(), loc).Big()
stack.push(val)
+ return nil, nil
}
-func opSstore(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSstore(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
loc := common.BigToHash(stack.pop())
val := stack.pop()
env.StateDB.SetState(contract.Address(), loc, common.BigToHash(val))
+ return nil, nil
}
-func opJump(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opJump(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
+ pos := stack.pop()
+ if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) {
+ nop := contract.GetOp(pos.Uint64())
+ return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos)
+ }
+ *pc = pos.Uint64()
+ return nil, nil
}
-func opJumpi(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opJumpi(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
+ pos, cond := stack.pop(), stack.pop()
+ if cond.Cmp(common.BigTrue) >= 0 {
+ if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) {
+ nop := contract.GetOp(pos.Uint64())
+ return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos)
+ }
+ *pc = pos.Uint64()
+ } else {
+ *pc++
+ }
+ return nil, nil
}
-func opJumpdest(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opJumpdest(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
+ return nil, nil
}
-func opPc(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
- stack.push(new(big.Int).Set(instr.data))
+func opPc(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
+ stack.push(new(big.Int).SetUint64(*pc))
+ return nil, nil
}
-func opMsize(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opMsize(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(big.NewInt(int64(memory.Len())))
+ return nil, nil
}
-func opGas(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opGas(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(new(big.Int).Set(contract.Gas))
+ return nil, nil
}
-func opCreate(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCreate(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var (
value = stack.pop()
offset, size = stack.pop(), stack.pop()
@@ -526,16 +478,17 @@ func opCreate(instr instruction, pc *uint64, env *Environment, contract *Contrac
// homestead we must check for CodeStoreOutOfGasError (homestead only
// rule) and treat as an error, if the ruleset is frontier we must
// ignore this error and pretend the operation was successful.
- if env.ChainConfig().IsHomestead(env.BlockNumber) && suberr == CodeStoreOutOfGasError {
+ if env.ChainConfig().IsHomestead(env.BlockNumber) && suberr == ErrCodeStoreOutOfGas {
stack.push(new(big.Int))
- } else if suberr != nil && suberr != CodeStoreOutOfGasError {
+ } else if suberr != nil && suberr != ErrCodeStoreOutOfGas {
stack.push(new(big.Int))
} else {
stack.push(addr.Big())
}
+ return nil, nil
}
-func opCall(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCall(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
gas := stack.pop()
// pop gas and value of the stack.
addr, value := stack.pop(), stack.pop()
@@ -564,9 +517,10 @@ func opCall(instr instruction, pc *uint64, env *Environment, contract *Contract,
memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
}
+ return nil, nil
}
-func opCallCode(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opCallCode(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
gas := stack.pop()
// pop gas and value of the stack.
addr, value := stack.pop(), stack.pop()
@@ -595,9 +549,16 @@ func opCallCode(instr instruction, pc *uint64, env *Environment, contract *Contr
memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
}
+ return nil, nil
}
-func opDelegateCall(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opDelegateCall(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
+ // if not homestead return an error. DELEGATECALL is not supported
+ // during pre-homestead.
+ if !env.ChainConfig().IsHomestead(env.BlockNumber) {
+ return nil, fmt.Errorf("invalid opcode %x", DELEGATECALL)
+ }
+
gas, to, inOffset, inSize, outOffset, outSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
toAddr := common.BigToAddress(to)
@@ -609,25 +570,34 @@ func opDelegateCall(instr instruction, pc *uint64, env *Environment, contract *C
stack.push(big.NewInt(1))
memory.Set(outOffset.Uint64(), outSize.Uint64(), ret)
}
+ return nil, nil
}
-func opReturn(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opReturn(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
+ offset, size := stack.pop(), stack.pop()
+ ret := memory.GetPtr(offset.Int64(), size.Int64())
+
+ return ret, nil
}
-func opStop(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+
+func opStop(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
+ return nil, nil
}
-func opSuicide(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func opSuicide(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
balance := env.StateDB.GetBalance(contract.Address())
env.StateDB.AddBalance(common.BigToAddress(stack.pop()), balance)
env.StateDB.Suicide(contract.Address())
+
+ return nil, nil
}
// following functions are used by the instruction jump table
// make log instruction function
-func makeLog(size int) instrFn {
- return func(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func makeLog(size int) executionFunc {
+ return func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
topics := make([]common.Hash, size)
mStart, mSize := stack.pop(), stack.pop()
for i := 0; i < size; i++ {
@@ -637,30 +607,34 @@ func makeLog(size int) instrFn {
d := memory.Get(mStart.Int64(), mSize.Int64())
log := NewLog(contract.Address(), topics, d, env.BlockNumber.Uint64())
env.StateDB.AddLog(log)
+ return nil, nil
}
}
// make push instruction function
-func makePush(size uint64, bsize *big.Int) instrFn {
- return func(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func makePush(size uint64, bsize *big.Int) executionFunc {
+ return func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
byts := getData(contract.Code, new(big.Int).SetUint64(*pc+1), bsize)
stack.push(common.Bytes2Big(byts))
*pc += size
+ return nil, nil
}
}
// make push instruction function
-func makeDup(size int64) instrFn {
- return func(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+func makeDup(size int64) executionFunc {
+ return func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.dup(int(size))
+ return nil, nil
}
}
// make swap instruction function
-func makeSwap(size int64) instrFn {
+func makeSwap(size int64) executionFunc {
// switch n + 1 otherwise n would be swapped with n
size += 1
- return func(instr instruction, pc *uint64, env *Environment, contract *Contract, memory *Memory, stack *Stack) {
+ return func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.swap(int(size))
+ return nil, nil
}
}
generated by cgit (git 2.34.1) at 2024-11-12 19:31:48 +0800