syzkaller/prog/generation.go
2019-09-23 15:35:26 +02:00

28 lines
696 B
Go

// Copyright 2015 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package prog
import (
"math/rand"
)
// Generate generates a random program of length ~ncalls.
// calls is a set of allowed syscalls, if nil all syscalls are used.
func (target *Target) Generate(rs rand.Source, ncalls int, ct *ChoiceTable) *Prog {
p := &Prog{
Target: target,
}
r := newRand(target, rs)
s := newState(target, ct, nil)
for len(p.Calls) < ncalls {
calls := r.generateCall(s, p, len(p.Calls))
for _, c := range calls {
s.analyze(c)
p.Calls = append(p.Calls, c)
}
}
p.debugValidate()
return p
}