func NewUnicorn(arch *models.Arch, os *models.OS, order binary.ByteOrder) (*Unicorn, error) {
Uc, err := uc.NewUnicorn(arch.UC_ARCH, arch.UC_MODE)
if err != nil {
return nil, err
}
return &Unicorn{
Unicorn: Uc,
arch: arch,
OS: os,
bits: arch.Bits,
Bsz: arch.Bits / 8,
order: order,
memio: memio.NewMemIO(
// ReadAt() callback
func(p []byte, addr uint64) (int, error) {
if err := Uc.MemReadInto(p, addr); err != nil {
return 0, err
}
return len(p), nil
},
// WriteAt() callback
func(p []byte, addr uint64) (int, error) {
if err := Uc.MemWrite(addr, p); err != nil {
return 0, err
}
return len(p), nil
},
),
}, nil
}
func NewUsercornRaw(l models.Loader, config *models.Config) (*Usercorn, error) {
config = config.Init()
a, OS, err := arch.GetArch(l.Arch(), l.OS())
if err != nil {
return nil, err
}
unicorn, err := NewUnicorn(a, OS, l.ByteOrder())
if err != nil {
return nil, err
}
u := &Usercorn{
Unicorn: unicorn,
traceMatching: true,
config: config,
loader: l,
exit: 0xffffffffffffffff,
}
if config.Output == os.Stderr && readline.IsTerminal(int(os.Stderr.Fd())) {
config.Color = true
}
u.memio = memio.NewMemIO(
// ReadAt() callback
func(p []byte, addr uint64) (int, error) {
if err := u.MemReadInto(p, addr); err != nil {
return 0, err
}
if u.config.TraceMemBatch {
u.memlog.UpdateBytes(addr, p, false)
}
return len(p), nil
},
// WriteAt() callback
func(p []byte, addr uint64) (int, error) {
if err := u.MemWrite(addr, p); err != nil {
return 0, err
}
if u.config.TraceMemBatch {
u.memlog.UpdateBytes(addr, p, true)
}
return len(p), nil
},
)
// load kernels
// the array cast is a trick to work around circular imports
if OS.Kernels != nil {
kernelI := OS.Kernels(u)
kernels := make([]co.Kernel, len(kernelI))
for i, k := range kernelI {
kernels[i] = k.(co.Kernel)
}
u.kernels = kernels
}
u.status = models.StatusDiff{U: u}
if u.config.LoopCollapse > 0 {
u.blockloop = models.NewLoopDetect(u.config.LoopCollapse)
}
// TODO: if we error, should close Usercorn/Unicorn instance?
// GC might take its time
if err := u.mapStack(); err != nil {
return nil, err
}
if err := u.addHooks(); err != nil {
return nil, err
}
return u, nil
}