435c0d9fc8
This PR switches the Nomad repository from using govendor to Go modules for managing dependencies. Aspects of the Nomad workflow remain pretty much the same. The usual Makefile targets should continue to work as they always did. The API submodule simply defers to the parent Nomad version on the repository, keeping the semantics of API versioning that currently exists.
42 lines
1.2 KiB
Go
42 lines
1.2 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package bpf
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import "fmt"
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// Assemble converts insts into raw instructions suitable for loading
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// into a BPF virtual machine.
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//
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// Currently, no optimization is attempted, the assembled program flow
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// is exactly as provided.
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func Assemble(insts []Instruction) ([]RawInstruction, error) {
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ret := make([]RawInstruction, len(insts))
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var err error
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for i, inst := range insts {
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ret[i], err = inst.Assemble()
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if err != nil {
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return nil, fmt.Errorf("assembling instruction %d: %s", i+1, err)
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}
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}
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return ret, nil
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}
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// Disassemble attempts to parse raw back into
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// Instructions. Unrecognized RawInstructions are assumed to be an
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// extension not implemented by this package, and are passed through
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// unchanged to the output. The allDecoded value reports whether insts
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// contains no RawInstructions.
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func Disassemble(raw []RawInstruction) (insts []Instruction, allDecoded bool) {
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insts = make([]Instruction, len(raw))
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allDecoded = true
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for i, r := range raw {
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insts[i] = r.Disassemble()
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if _, ok := insts[i].(RawInstruction); ok {
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allDecoded = false
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}
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}
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return insts, allDecoded
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}
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