Official Go implementation of the Ethereum protocol
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go-ethereum/cmd/disasm/main.go

34 lines
925 B

package main
import (
"fmt"
"io/ioutil"
"os"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/vm"
)
func main() {
code, err := ioutil.ReadAll(os.Stdin)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
code = common.Hex2Bytes(string(code[:len(code)-1]))
fmt.Printf("%x\n", code)
for pc := uint64(0); pc < uint64(len(code)); pc++ {
op := vm.OpCode(code[pc])
fmt.Printf("%-5d %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:
a := uint64(op) - uint64(vm.PUSH1) + 1
fmt.Printf(" => %x", code[pc+1:pc+1+a])
pc += a
}
fmt.Println()
}
}