|
|
|
@ -14,7 +14,7 @@ |
|
|
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
|
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
|
|
// Provides support for dealing with EVM assembly instructions (e.g., disassembling them).
|
|
|
|
|
// Package asm provides support for dealing with EVM assembly instructions (e.g., disassembling them).
|
|
|
|
|
package asm |
|
|
|
|
|
|
|
|
|
import ( |
|
|
|
@ -34,14 +34,14 @@ type instructionIterator struct { |
|
|
|
|
started bool |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Create a new instruction iterator.
|
|
|
|
|
// NewInstructionIterator create a new instruction iterator.
|
|
|
|
|
func NewInstructionIterator(code []byte) *instructionIterator { |
|
|
|
|
it := new(instructionIterator) |
|
|
|
|
it.code = code |
|
|
|
|
return it |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Returns true if there is a next instruction and moves on.
|
|
|
|
|
// Next returns true if there is a next instruction and moves on.
|
|
|
|
|
func (it *instructionIterator) Next() bool { |
|
|
|
|
if it.error != nil || uint64(len(it.code)) <= it.pc { |
|
|
|
|
// We previously reached an error or the end.
|
|
|
|
@ -79,27 +79,27 @@ func (it *instructionIterator) Next() bool { |
|
|
|
|
return true |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Returns any error that may have been encountered.
|
|
|
|
|
// Error returns any error that may have been encountered.
|
|
|
|
|
func (it *instructionIterator) Error() error { |
|
|
|
|
return it.error |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Returns the PC of the current instruction.
|
|
|
|
|
// PC returns the PC of the current instruction.
|
|
|
|
|
func (it *instructionIterator) PC() uint64 { |
|
|
|
|
return it.pc |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Returns the opcode of the current instruction.
|
|
|
|
|
// Op returns the opcode of the current instruction.
|
|
|
|
|
func (it *instructionIterator) Op() vm.OpCode { |
|
|
|
|
return it.op |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Returns the argument of the current instruction.
|
|
|
|
|
// Arg returns the argument of the current instruction.
|
|
|
|
|
func (it *instructionIterator) Arg() []byte { |
|
|
|
|
return it.arg |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Pretty-print all disassembled EVM instructions to stdout.
|
|
|
|
|
// PrintDisassembled pretty-print all disassembled EVM instructions to stdout.
|
|
|
|
|
func PrintDisassembled(code string) error { |
|
|
|
|
script, err := hex.DecodeString(code) |
|
|
|
|
if err != nil { |
|
|
|
@ -117,7 +117,7 @@ func PrintDisassembled(code string) error { |
|
|
|
|
return it.Error() |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Return all disassembled EVM instructions in human-readable format.
|
|
|
|
|
// Disassemble returns all disassembled EVM instructions in human-readable format.
|
|
|
|
|
func Disassemble(script []byte) ([]string, error) { |
|
|
|
|
instrs := make([]string, 0) |
|
|
|
|
|
|
|
|
|