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      1 /*
      2  * Copyright 2013, 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 ABCC_ABCC_H
     18 #define ABCC_ABCC_H
     19 
     20 #include <list>
     21 #include <map>
     22 #include <string>
     23 #include <vector>
     24 
     25 namespace abcc {
     26 
     27 enum ReturnCode {
     28   RET_OK,
     29   RET_FAIL_RUN_CMD,
     30   RET_FAIL_UNSUPPORT_ABI,
     31   RET_FAIL_PREPARE_BITCODE,
     32   RET_FAIL_PREPARE_TOOL,
     33   RET_FAIL_CLEANUP,
     34   RET_FAIL_TRANSLATE,
     35   RET_FAIL_COMPILE,
     36   RET_FAIL_LINK
     37 };
     38 
     39 enum Command {
     40   CMD_TRANSLATE = 0,
     41   CMD_COMPILE,
     42   CMD_LINK,
     43   CMD_LINK_RUNTIME
     44 };
     45 
     46 class TargetAbi {
     47 public:
     48   enum Abi {
     49     ARMEABI = 0,
     50     ARMEABI_V7A,
     51     X86,
     52     MIPS,
     53     ARM64_V8A,
     54     X86_64,
     55     MIPS64
     56   };
     57 
     58 private:
     59   Abi mAbi;
     60 
     61 public:
     62   TargetAbi(const std::string &abi);
     63   operator int() const { return (int)mAbi; }
     64   operator const char*() const {
     65     if (mAbi == ARMEABI)  return "armeabi";
     66     if (mAbi == ARMEABI_V7A)  return "armeabi-v7a";
     67     if (mAbi == X86)  return "x86";
     68     if (mAbi == MIPS)  return "mips";
     69     if (mAbi == ARM64_V8A)  return "arm64-v8a";
     70     if (mAbi == X86_64)  return "x86_64";
     71     if (mAbi == MIPS64)  return "mips64";
     72     return 0;
     73   }
     74   const char* getArch() const {
     75     if (mAbi == ARMEABI || mAbi == ARMEABI_V7A)  return "arm";
     76     if (mAbi == X86)  return "x86";
     77     if (mAbi == MIPS) return "mips";
     78     if (mAbi == ARM64_V8A)  return "arm64";
     79     if (mAbi == X86_64)  return "x86_64";
     80     if (mAbi == MIPS64)  return "mips64";
     81     return 0;
     82   }
     83 };
     84 
     85 struct TargetAttributes {
     86   const char *mArch;
     87   const char *mTriple;
     88   const char *mLinkEmulation;
     89   const char *mBaseCFlags;
     90   const char *mBaseLDFlags;
     91 };
     92 
     93 const TargetAttributes kGlobalTargetAttrs[] = {
     94   {"arm", "armv5te-linux-androideabi", "armelf_linux_eabi", "-arm-enable-ehabi -arm-enable-ehabi-descriptors -float-abi=soft", "-dynamic-linker /system/bin/linker"},
     95 #ifdef FORCE_ARM
     96   {"arm", "armv7-linux-androideabi", "armelf_linux_eabi", "-arm-enable-ehabi -arm-enable-ehabi-descriptors -float-abi=soft", "-dynamic-linker /system/bin/linker"},
     97 #else
     98   {"arm", "thumbv7-linux-androideabi", "armelf_linux_eabi", "-arm-enable-ehabi -arm-enable-ehabi-descriptors -float-abi=soft", "-dynamic-linker /system/bin/linker"},
     99 #endif
    100   {"x86", "i686-linux-android", "elf_i386", "-disable-fp-elim -force-align-stack -mattr=-ssse3,-sse41,-sse42,-sse4a,-popcnt -x86-force-gv-stack-cookie", "-dynamic-linker /system/bin/linker"},
    101   {"mips", "mipsel-linux-android", "elf32ltsmip", "-float-abi=hard", "-dynamic-linker /system/bin/linker"},
    102   {"arm64", "aarch64-linux-android", "aarch64linux", "", "-dynamic-linker /system/bin/linker64"},
    103   {"x86_64", "x86_64-linux-android", "elf_x86_64", "-disable-fp-elim -force-align-stack -mattr=+sse3 -x86-force-gv-stack-cookie", "-dynamic-linker /system/bin/linker64"},
    104   {"mips64", "mips64el-linux-android", "elf64ltsmip", "", "-dynamic-linker /system/bin/linker64"},
    105 };
    106 
    107 // Used when computing mutual dependency
    108 class BitcodeCompiler;
    109 class BitcodeInfo;
    110 typedef std::map<std::string/*soname*/, BitcodeInfo> SONameMap;
    111 
    112 class BitcodeInfo {
    113 public:
    114   BitcodeInfo() {}  // Only for stl use
    115   BitcodeInfo(const std::string &bc);
    116   int readWrapper(BitcodeCompiler &);
    117   static void dropExternalLDLibs(SONameMap &map);
    118 
    119   bool mShared;
    120   int mOptimizationLevel;
    121   std::string mBCPath;
    122   std::string mTargetBCPath;
    123   std::string mObjPath;
    124   std::string mOutPath;
    125   std::string mSOName;
    126   std::string mLDFlags; // --no-undefined, ...
    127   std::string mLDLocalLibsStr;  // i.e.: ./obj/local/.../libxxx.a
    128   std::list<std::string> mLDLibs;  // -lxxx, will be removed one-by-one until empty
    129   std::string mLDLibsStr; // Immutable once read in
    130 
    131 public:
    132   static int transferBytesToNumLe(const unsigned char *buffer, size_t n);
    133 };
    134 
    135 
    136 class BitcodeCompiler {
    137 protected:
    138   TargetAbi mAbi;
    139   std::string mSysroot;
    140   std::string mWorkingDir;
    141 
    142   // Target-independent, but global
    143   std::string mGlobalCFlags;
    144   std::string mGlobalLDFlags;
    145   std::string mGlobalLDLibs;
    146 
    147   ReturnCode mRet;
    148   std::vector<BitcodeInfo> mBitcodeFiles;
    149   SONameMap mSonameMap;
    150   std::string mExecutableToolsPath[(unsigned)CMD_LINK_RUNTIME+1];
    151 
    152 public:
    153   BitcodeCompiler(const std::string &abi, const std::string &sysroot, const std::string &working_dir, const bool savetemps);
    154   virtual ~BitcodeCompiler();
    155   const ReturnCode returnCode() const { return mRet; }
    156   virtual void cleanupPre() {}
    157   virtual void cleanupPost() {}
    158   void prepare() {
    159     prepareBitcodes();
    160     if (returnCode() != RET_OK)
    161       return;
    162 
    163     prepareToolchain();
    164     if (returnCode() != RET_OK)
    165       return;
    166   }
    167   void execute() {
    168     translate();
    169     if (returnCode() != RET_OK)
    170       return;
    171 
    172     compile();
    173     if (returnCode() != RET_OK)
    174       return;
    175 
    176     link();
    177     if (returnCode() != RET_OK)
    178       return;
    179   }
    180 
    181 private:
    182   bool mSaveTemps;
    183 
    184   void prepareBitcodes();
    185   void createSONameMapping();
    186   virtual void getBitcodeFiles() = 0;
    187   virtual void prepareToolchain() = 0;
    188   virtual void copyRuntime(const BitcodeInfo &info) = 0;
    189   virtual void removeIntermediateFile(const std::string &path) = 0;
    190   void translate();
    191   void compile();
    192   void link();
    193 
    194 public:
    195   virtual int parseLDFlags(BitcodeInfo &info, const std::string &str) = 0;
    196 
    197 protected:
    198   void runCmd(std::string cmd, bool dump = false);
    199 };
    200 
    201 } // namespace abcc
    202 
    203 // FIXME: We use LOGV, LOGE in Abcc.cpp, how to prevent this anti dependency?
    204 #if ON_DEVICE
    205 #include "Abcc_device.h"
    206 #else
    207 #include "Abcc_host.h"
    208 #endif
    209 
    210 #endif
    211