text: // Copyright 2016 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  package bpf
  
  import "fmt"
  
  // Assemble converts insts into raw instructions suitable for loading
  // into a BPF virtual machine.
  //
  // Currently, no optimization is attempted, the assembled program flow
  // is exactly as provided.
  func Assemble(insts []Instruction) ([]RawInstruction, error) {
  	ret := make([]RawInstruction, len(insts))
  	var err error
  	for i, inst := range insts {
  		ret[i], err = inst.Assemble()
  		if err != nil {
  			return nil, fmt.Errorf("assembling instruction %d: %s", i+1, err)
  		}
  	}
  	return ret, nil
  }
  
  // Disassemble attempts to parse raw back into
  // Instructions. Unrecognized RawInstructions are assumed to be an
  // extension not implemented by this package, and are passed through
  // unchanged to the output. The allDecoded value reports whether insts
  // contains no RawInstructions.
  func Disassemble(raw []RawInstruction) (insts []Instruction, allDecoded bool) {
  	insts = make([]Instruction, len(raw))
  	allDecoded = true
  	for i, r := range raw {
  		insts[i] = r.Disassemble()
  		if _, ok := insts[i].(RawInstruction); ok {
  			allDecoded = false
  		}
  	}
  	return insts, allDecoded
  }
  