From ddf17d93acf92ef18b0134f19f22220362e06bad Mon Sep 17 00:00:00 2001 From: obscuren Date: Thu, 29 Jan 2015 14:46:59 +0100 Subject: Samples and disams cmd for evm code --- cmd/disasm/main.go | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 cmd/disasm/main.go (limited to 'cmd/disasm') diff --git a/cmd/disasm/main.go b/cmd/disasm/main.go new file mode 100644 index 000000000..c07246b00 --- /dev/null +++ b/cmd/disasm/main.go @@ -0,0 +1,34 @@ +package main + +import ( + "fmt" + "io/ioutil" + "os" + + "github.com/ethereum/go-ethereum/ethutil" + "github.com/ethereum/go-ethereum/vm" +) + +func main() { + code, err := ioutil.ReadAll(os.Stdin) + if err != nil { + fmt.Println(err) + os.Exit(1) + } + code = ethutil.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() + } +} -- cgit