// LoadImage loads an e8 image into the machine.
func (m *Machine) LoadImage(r io.ReadSeeker) error {
secs, err := e8.Read(r)
if err != nil {
return err
}
return m.LoadSections(secs)
}
// DumpImage disassembles an image.
func DumpImage(r io.ReadSeeker, out io.Writer) error {
secs, err := e8.Read(r)
if err != nil {
return err
}
for _, sec := range secs {
switch sec.Type {
case e8.Code:
fmt.Fprintln(out, "[code section]")
lines := Dasm(sec.Bytes, sec.Addr)
for _, line := range lines {
fmt.Fprintln(out, line)
}
case e8.Data:
fmt.Fprintf(out, "[data of %d bytes at %08x]\n",
sec.Size, sec.Addr,
)
lines := Dasm(sec.Bytes, sec.Addr)
for _, line := range lines {
fmt.Fprintln(out, line)
}
case e8.Zeros:
fmt.Fprintf(out, "[zeros of %d bytes at %08x]\n",
sec.Size, sec.Addr,
)
case e8.Debug:
fmt.Fprintf(out, "[debug of %d bytes]\n", sec.Size)
}
}
return nil
}
func main() {
flag.Parse()
args := flag.Args()
if len(args) != 1 {
log.Fatal("need exactly one input file\n")
}
fname := args[0]
if *doDasm {
f, err := os.Open(fname)
defer f.Close()
err = dasm8.DumpImage(f, os.Stdout)
if err != nil {
log.Fatal(err)
}
} else if *printDebug {
f, err := os.Open(fname)
defer f.Close()
secs, err := e8.Read(f)
if err != nil {
log.Fatal(err)
}
for _, sec := range secs {
if sec.Type != e8.Debug {
continue
}
tab, err := debug8.UnmarshalTable(sec.Bytes)
if err != nil {
log.Fatal(err)
}
tab.PrintTo(os.Stdout)
}
} else {
bs, err := ioutil.ReadFile(fname)
if err != nil {
log.Fatal(err)
}
n, e := run(bs)
fmt.Printf("(%d cycles)\n", n)
if e != nil {
if !arch8.IsHalt(e) {
fmt.Println(e)
}
} else {
fmt.Println("(end of time)")
}
}
}
func run(bs []byte) (int, error) {
// create a single core machine
m := arch8.NewMachine(uint32(*memSize), 1)
secs, err := e8.Read(bytes.NewReader(bs))
if err != nil {
return 0, err
}
if err := m.LoadSections(secs); err != nil {
return 0, err
}
if *bootArg > math.MaxUint32 {
log.Fatalf("boot arg(%d) is too large", *bootArg)
}
if err := m.WriteWord(arch8.AddrBootArg, uint32(*bootArg)); err != nil {
return 0, err
}
if *romRoot != "" {
m.MountROM(*romRoot)
}
if *randSeed != 0 {
m.RandSeed(*randSeed)
}
ret, exp := m.Run(*ncycle)
if *printStatus {
m.PrintCoreStatus()
}
if !arch8.IsHalt(exp) {
fmt.Println(exp)
err := arch8.FprintStack(os.Stdout, m, exp)
if err != nil {
log.Fatal(err)
}
}
if exp == nil {
return ret, nil
}
return ret, exp
}
func run(bs []byte) (int, error) {
if *bootArg > math.MaxUint32 {
log.Fatalf("boot arg(%d) is too large", *bootArg)
}
// create a single core machine
m := arch8.NewMachine(&arch8.Config{
MemSize: uint32(*memSize),
ROM: *romRoot,
RandSeed: *randSeed,
BootArg: uint32(*bootArg),
})
secs, err := e8.Read(bytes.NewReader(bs))
if err != nil {
return 0, err
}
if err := m.LoadSections(secs); err != nil {
return 0, err
}
ret, exp := m.Run(*ncycle)
if *printStatus {
m.PrintCoreStatus()
}
if !arch8.IsHalt(exp) {
fmt.Println(exp)
err := arch8.FprintStack(os.Stdout, m, exp)
if err != nil {
log.Fatal(err)
}
}
if exp == nil {
return ret, nil
}
return ret, exp
}
