mirror of https://github.com/poanetwork/quorum.git
51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package chain
|
|
|
|
import (
|
|
"fmt"
|
|
"math/big"
|
|
|
|
"github.com/ethereum/go-ethereum/vm"
|
|
"github.com/ethgo.old/ethutil"
|
|
)
|
|
|
|
func Disassemble(script []byte) (asm []string) {
|
|
pc := new(big.Int)
|
|
for {
|
|
if pc.Cmp(big.NewInt(int64(len(script)))) >= 0 {
|
|
return
|
|
}
|
|
|
|
// Get the memory location of pc
|
|
val := script[pc.Int64()]
|
|
// Get the opcode (it must be an opcode!)
|
|
op := vm.OpCode(val)
|
|
|
|
asm = append(asm, fmt.Sprintf("%04v: %v", pc, op))
|
|
|
|
switch op {
|
|
case vm.PUSH1, vm.PUSH2, vm.PUSH3, vm.PUSH4, vm.PUSH5, vm.PUSH6, vm.PUSH7, vm.PUSH8,
|
|
vm.PUSH9, vm.PUSH10, vm.PUSH11, vm.PUSH12, vm.PUSH13, vm.PUSH14, vm.PUSH15,
|
|
vm.PUSH16, vm.PUSH17, vm.PUSH18, vm.PUSH19, vm.PUSH20, vm.PUSH21, vm.PUSH22,
|
|
vm.PUSH23, vm.PUSH24, vm.PUSH25, vm.PUSH26, vm.PUSH27, vm.PUSH28, vm.PUSH29,
|
|
vm.PUSH30, vm.PUSH31, vm.PUSH32:
|
|
pc.Add(pc, ethutil.Big1)
|
|
a := int64(op) - int64(vm.PUSH1) + 1
|
|
if int(pc.Int64()+a) > len(script) {
|
|
return
|
|
}
|
|
|
|
data := script[pc.Int64() : pc.Int64()+a]
|
|
if len(data) == 0 {
|
|
data = []byte{0}
|
|
}
|
|
asm = append(asm, fmt.Sprintf("%04v: 0x%x", pc, data))
|
|
|
|
pc.Add(pc, big.NewInt(a-1))
|
|
}
|
|
|
|
pc.Add(pc, ethutil.Big1)
|
|
}
|
|
|
|
return asm
|
|
}
|