diff options
Diffstat (limited to 'cmd/disasm/main.go')
| -rw-r--r-- | cmd/disasm/main.go | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/cmd/disasm/main.go b/cmd/disasm/main.go index d792e8ee5..e6a9a6676 100644 --- a/cmd/disasm/main.go +++ b/cmd/disasm/main.go @@ -18,10 +18,10 @@ package main import ( + "encoding/hex" "fmt" "io/ioutil" "os" - "encoding/hex" "strings" "github.com/ethereum/go-ethereum/core/vm" @@ -42,15 +42,19 @@ func main() { 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]) - + u := pc + 1 + a + if uint64(len(code)) <= pc || uint64(len(code)) < u { + fmt.Printf("Error: incomplete push instruction at %v\n", pc) + return + } + fmt.Printf("%-5d %v => %x\n", pc, op, code[pc+1:u]) pc += a + default: + fmt.Printf("%-5d %v\n", pc, op) } - fmt.Println() } } |