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      1 /*
      2  * Copyright 2011, The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef STUB_LAYOUT_H
     18 #define STUB_LAYOUT_H
     19 
     20 #include <map>
     21 #include <stdlib.h>
     22 
     23 class StubLayout {
     24 private:
     25   unsigned char *table;
     26   size_t count;
     27 
     28   std::map<void *, void *> stub_index;
     29 
     30 public:
     31   StubLayout();
     32   virtual ~StubLayout() { }
     33 
     34   void initStubTable(unsigned char *table, size_t count);
     35   void *allocateStub(void *addr = 0);
     36 
     37   size_t calcStubTableSize(size_t count) const;
     38   virtual size_t getUnitStubSize() const = 0;
     39 
     40 private:
     41   virtual void setStubAddress(void *stub, void *addr) = 0;
     42 
     43 };
     44 
     45 class StubLayoutARM : public StubLayout {
     46 public:
     47   StubLayoutARM() { }
     48   size_t getUnitStubSize() const;
     49 
     50 private:
     51   virtual void setStubAddress(void *stub, void *addr);
     52 };
     53 
     54 class StubLayoutAARCH64 : public StubLayout {
     55 public:
     56   StubLayoutAARCH64() { }
     57   size_t getUnitStubSize() const;
     58 
     59 private:
     60   virtual void setStubAddress(void *stub, void *addr);
     61 };
     62 
     63 class StubLayoutMIPS : public StubLayout {
     64 public:
     65   StubLayoutMIPS() { }
     66   size_t getUnitStubSize() const;
     67 
     68 private:
     69   virtual void setStubAddress(void *stub, void *addr);
     70 };
     71 
     72 class StubLayoutX86 : public StubLayout {
     73 public:
     74   StubLayoutX86() { }
     75   size_t getUnitStubSize() const;
     76 
     77 private:
     78   virtual void setStubAddress(void *stub, void *addr);
     79 };
     80 
     81 class StubLayoutX86_64 : public StubLayout {
     82 public:
     83   StubLayoutX86_64() { }
     84   size_t getUnitStubSize() const;
     85 
     86 private:
     87   virtual void setStubAddress(void *stub, void *addr);
     88 };
     89 
     90 #endif // STUB_LAYOUT_H
     91