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// 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 main
import (
"bytes"
"sort"
"text/template"
. "github.com/google/syzkaller/sysparser"
)
type Arch struct {
Name string
CARCH []string
}
var archs = []*Arch{
{"amd64", []string{"__x86_64__"}},
{"arm64", []string{"__aarch64__"}},
{"ppc64le", []string{"__ppc64__", "__PPC64__", "__powerpc64__"}},
}
var syzkalls = map[string]uint64{
"syz_test": 1000001,
"syz_open_dev": 1000002,
"syz_open_pts": 1000003,
"syz_fuse_mount": 1000004,
"syz_fuseblk_mount": 1000005,
"syz_emit_ethernet": 1000006,
"syz_kvm_setup_cpu": 1000007,
}
func generateExecutorSyscalls(syscalls []Syscall, consts map[string]map[string]uint64) {
var data SyscallsData
for _, arch := range archs {
var calls []SyscallData
for _, c := range syscalls {
syscallNR := -1
if nr, ok := consts[arch.Name]["__NR_"+c.CallName]; ok {
syscallNR = int(nr)
}
calls = append(calls, SyscallData{c.Name, syscallNR})
}
data.Archs = append(data.Archs, ArchData{arch.CARCH, calls})
}
for name, nr := range syzkalls {
data.FakeCalls = append(data.FakeCalls, SyscallData{name, int(nr)})
}
sort.Sort(SyscallArray(data.FakeCalls))
hdrcode := "executor/syscalls.h"
logf(1, "Generate header with syscall numbers in %v", hdrcode)
buf := new(bytes.Buffer)
if err := syscallsTempl.Execute(buf, data); err != nil {
failf("failed to execute syscalls template: %v", err)
}
writeFile(hdrcode, buf.Bytes())
}
type SyscallsData struct {
Archs []ArchData
FakeCalls []SyscallData
}
type ArchData struct {
CARCH []string
Calls []SyscallData
}
type SyscallData struct {
Name string
NR int
}
type SyscallArray []SyscallData
func (a SyscallArray) Len() int { return len(a) }
func (a SyscallArray) Less(i, j int) bool { return a[i].Name < a[j].Name }
func (a SyscallArray) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
var syscallsTempl = template.Must(template.New("").Parse(
`// AUTOGENERATED FILE
{{range $c := $.FakeCalls}}#define __NR_{{$c.Name}} {{$c.NR}}
{{end}}
struct call_t {
const char* name;
int sys_nr;
};
{{range $arch := $.Archs}}
#if {{range $cdef := $arch.CARCH}}defined({{$cdef}}) || {{end}}0
call_t syscalls[] = {
{{range $c := $arch.Calls}} {"{{$c.Name}}", {{$c.NR}}},
{{end}}
};
#endif
{{end}}
`))
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