5 #include "types-arch.h"
6 #include "std_macros.h"
10 template< typename a, typename b > inline
11 a nonull_static_cast( b p )
13 Address d = reinterpret_cast<Address>
14 (static_cast<a>(reinterpret_cast<b>(10))) - 10;
15 return reinterpret_cast<a>( reinterpret_cast<Address>(p) + d);
18 template< typename T >
24 Address i = (Address)_i;
25 return reinterpret_cast<T*>(i);
32 { new ((void*)_i) T; }
36 { new ((void*)_i) T(a1); }
38 template<typename A1, typename A2>
39 void init(A1 a1, A2 a2)
40 { new ((void*)_i) T(a1, a2); }
42 template<typename A1, typename A2, typename A3>
43 void init(A1 a1, A2 a2, A3 a3)
44 { new ((void*)_i) T(a1, a2, a3); }
46 template<typename A1, typename A2, typename A3, typename A4>
47 void init(A1 a1, A2 a2, A3 a3, A4 a4)
48 { new ((void*)_i) T(a1, a2, a3, a4); }
50 template<typename A1, typename A2, typename A3, typename A4, typename A5>
51 void init(A1 a1, A2 a2, A3 a3, A4 a4, A5 a5)
52 { new ((void*)_i) T(a1, a2, a3, a4, a5); }
55 char __attribute__((aligned(sizeof(Mword)))) _i[sizeof(T)];
59 template< typename VALUE, typename TARGET >
64 typedef TARGET Target;
65 struct Type_conversion_error;
69 explicit Number(Value v) : _v(v) {}
73 static Target create(Value v)
76 Target operator = (Target o)
77 { _v = o._v; return *static_cast<Target*>(this); }
79 Value value() const { return _v; }
80 void set_value(Value v) { _v = v; }
82 bool operator < (Target const &o) const { return _v < o._v; }
83 bool operator > (Target const &o) const { return _v > o._v; }
84 bool operator <= (Target const &o) const { return _v <= o._v; }
85 bool operator >= (Target const &o) const { return _v >= o._v; }
86 bool operator == (Target const &o) const { return _v == o._v; }
87 bool operator != (Target const &o) const { return _v != o._v; }
89 operator Type_conversion_error const * () const
90 { return (Type_conversion_error const *)_v; }
92 Target operator | (Target const &o) const
93 { return Target(_v | o._v); }
95 Target operator & (Target const &o) const
96 { return Target(_v & o._v); }
98 Target operator + (Target const &o) const
99 { return Target(_v + o._v); }
101 Target operator - (Target const &o) const
102 { return Target(_v - o._v); }
104 Target operator << (unsigned long s) const
105 { return Target(_v << s); }
107 Target operator >> (unsigned long s) const
108 { return Target(_v >> s); }
110 void operator += (Target const &o) { _v += o._v; }
111 void operator -= (Target const &o) { _v -= o._v; }
112 void operator <<= (unsigned long s) { _v <<= s; }
113 void operator >>= (unsigned long s) { _v >>= s; }
115 Target operator ++ () { return Target(++_v); }
116 Target operator ++ (int) { return Target(_v++); }
118 Target operator -- () { return Target(--_v); }
119 Target operator -- (int) { return Target(_v--); }
121 Target trunc(Target const &size) const
122 { return Target(_v & ~(size._v - 1)); }
124 Target offset(Target const &size) const
125 { return Target(_v & (size._v - 1)); }
127 static Target from_shift(unsigned char shift)
129 if (shift >= (int)sizeof(Value) * 8)
130 return Target(Value(1) << Value((sizeof(Value) * 8 - 1)));
131 return Target(Value(1) << Value(shift));
138 template< int SHIFT >
139 class Page_addr : public Number<Address, Page_addr<SHIFT> >
142 typedef Number<Address, Page_addr<SHIFT> > B;
149 Address __shift(Address x, Itt<true>) { return x << SH; }
152 Address __shift(Address x, Itt<false>) { return x >> (-SH); }
155 enum { Shift = SHIFT };
157 template< int OSHIFT >
158 Page_addr(Page_addr<OSHIFT> o)
159 : B(__shift<Shift-OSHIFT>(o.value(), Itt<(OSHIFT < Shift)>()))
162 explicit Page_addr(Address a) : B(a) {}
169 class Virt_addr : public Page_addr<ARCH_PAGE_SHIFT>
172 template< int OSHIFT >
173 Virt_addr(Page_addr<OSHIFT> o) : Page_addr<ARCH_PAGE_SHIFT>(o) {}
175 explicit Virt_addr(unsigned int a) : Page_addr<ARCH_PAGE_SHIFT>(a) {}
176 explicit Virt_addr(int a) : Page_addr<ARCH_PAGE_SHIFT>(a) {}
177 explicit Virt_addr(long int a) : Page_addr<ARCH_PAGE_SHIFT>(a) {}
178 explicit Virt_addr(unsigned long a) : Page_addr<ARCH_PAGE_SHIFT>(a) {}
179 explicit Virt_addr(void *a) : Page_addr<ARCH_PAGE_SHIFT>(Address(a)) {}
184 typedef Page_addr<ARCH_PAGE_SHIFT> Virt_size;
186 typedef Page_addr<0> Page_number;
187 typedef Page_number Page_count;
190 struct Simple_ptr_policy
192 typedef T &Deref_type;
194 typedef T *Member_type;
195 typedef T *Storage_type;
197 static void init(Storage_type const &) {}
198 static void init(Storage_type &d, Storage_type const &s) { d = s; }
199 static void copy(Storage_type &d, Storage_type const &s) { d = s; }
200 static void destroy(Storage_type const &) {}
201 static Deref_type deref(Storage_type p) { return *p; }
202 static Member_type member(Storage_type p) { return p; }
203 static Ptr_type ptr(Storage_type p) { return p; }
207 struct Simple_ptr_policy<void>
209 typedef void Deref_type;
210 typedef void *Ptr_type;
211 typedef void Member_type;
212 typedef void *Storage_type;
214 static void init(Storage_type const &) {}
215 static void init(Storage_type &d, Storage_type const &s) { d = s; }
216 static void copy(Storage_type &d, Storage_type const &s) { d = s; }
217 static void destroy(Storage_type const &) {}
218 static Deref_type deref(Storage_type p);
219 static Member_type member(Storage_type p);
220 static Ptr_type ptr(Storage_type p) { return p; }
224 template<typename T, template<typename P> class Policy = Simple_ptr_policy,
225 typename Discriminator = int>
229 struct Null_check_type;
231 typedef typename Policy<T>::Deref_type Deref_type;
232 typedef typename Policy<T>::Ptr_type Ptr_type;
233 typedef typename Policy<T>::Member_type Member_type;
234 typedef typename Policy<T>::Storage_type Storage_type;
236 template<typename A, template<typename X> class B, typename C>
237 friend class Smart_ptr;
244 { Policy<T>::init(_p); }
246 explicit Smart_ptr(T *p)
247 { Policy<T>::init(_p, p); }
249 Smart_ptr(Smart_ptr const &o)
250 { Policy<T>::copy(_p, o._p); }
252 template< typename RHT >
253 Smart_ptr(Smart_ptr<RHT, Policy, Discriminator> const &o)
254 { Policy<T>::copy(_p, o._p); }
257 { Policy<T>::destroy(_p); }
259 Smart_ptr operator = (Smart_ptr const &o)
264 Policy<T>::destroy(_p);
265 Policy<T>::copy(_p, o._p);
269 Deref_type operator * () const
270 { return Policy<T>::deref(_p); }
272 Member_type operator -> () const
273 { return Policy<T>::member(_p); }
276 { return Policy<T>::ptr(_p); }
278 operator Null_check_type const * () const
279 { return reinterpret_cast<Null_check_type const *>(Policy<T>::ptr(_p)); }
282 enum User_ptr_discr {};
287 typedef Smart_ptr<T, Simple_ptr_policy, User_ptr_discr> Ptr;
291 /// standard size type
292 ///typedef mword_t size_t;
293 ///typedef signed int ssize_t;
295 /// momentary only used in UX since there the kernel has a different
296 /// address space than user mode applications
297 enum Address_type { ADDR_KERNEL = 0, ADDR_USER = 1, ADDR_UNKNOWN = 2 };