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      1 //===-- Target.cpp --------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // This file implements the common infrastructure (including C bindings) for
     11 // libLLVMTarget.a, which implements target information.
     12 //
     13 //===----------------------------------------------------------------------===//
     14 
     15 #include "llvm-c/Target.h"
     16 #include "llvm-c/Initialization.h"
     17 #include "llvm/IR/DataLayout.h"
     18 #include "llvm/IR/LLVMContext.h"
     19 #include "llvm/IR/Value.h"
     20 #include "llvm/InitializePasses.h"
     21 #include "llvm/IR/LegacyPassManager.h"
     22 #include "llvm/Analysis/TargetLibraryInfo.h"
     23 #include <cstring>
     24 
     25 using namespace llvm;
     26 
     27 inline TargetLibraryInfoImpl *unwrap(LLVMTargetLibraryInfoRef P) {
     28   return reinterpret_cast<TargetLibraryInfoImpl*>(P);
     29 }
     30 
     31 inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfoImpl *P) {
     32   TargetLibraryInfoImpl *X = const_cast<TargetLibraryInfoImpl*>(P);
     33   return reinterpret_cast<LLVMTargetLibraryInfoRef>(X);
     34 }
     35 
     36 void llvm::initializeTarget(PassRegistry &Registry) {
     37   initializeTargetLibraryInfoWrapperPassPass(Registry);
     38   initializeTargetTransformInfoWrapperPassPass(Registry);
     39 }
     40 
     41 void LLVMInitializeTarget(LLVMPassRegistryRef R) {
     42   initializeTarget(*unwrap(R));
     43 }
     44 
     45 LLVMTargetDataRef LLVMCreateTargetData(const char *StringRep) {
     46   return wrap(new DataLayout(StringRep));
     47 }
     48 
     49 void LLVMAddTargetData(LLVMTargetDataRef TD, LLVMPassManagerRef PM) {
     50 }
     51 
     52 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
     53                               LLVMPassManagerRef PM) {
     54   unwrap(PM)->add(new TargetLibraryInfoWrapperPass(*unwrap(TLI)));
     55 }
     56 
     57 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
     58   std::string StringRep = unwrap(TD)->getStringRepresentation();
     59   return strdup(StringRep.c_str());
     60 }
     61 
     62 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
     63   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
     64 }
     65 
     66 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
     67   return unwrap(TD)->getPointerSize(0);
     68 }
     69 
     70 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
     71   return unwrap(TD)->getPointerSize(AS);
     72 }
     73 
     74 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
     75   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext()));
     76 }
     77 
     78 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
     79   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext(), AS));
     80 }
     81 
     82 LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD) {
     83   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C)));
     84 }
     85 
     86 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD, unsigned AS) {
     87   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C), AS));
     88 }
     89 
     90 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
     91   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
     92 }
     93 
     94 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
     95   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
     96 }
     97 
     98 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
     99   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
    100 }
    101 
    102 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
    103   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
    104 }
    105 
    106 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
    107   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
    108 }
    109 
    110 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
    111   return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
    112 }
    113 
    114 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
    115                                         LLVMValueRef GlobalVar) {
    116   return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
    117 }
    118 
    119 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
    120                              unsigned long long Offset) {
    121   StructType *STy = unwrap<StructType>(StructTy);
    122   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
    123 }
    124 
    125 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
    126                                        unsigned Element) {
    127   StructType *STy = unwrap<StructType>(StructTy);
    128   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
    129 }
    130 
    131 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
    132   delete unwrap(TD);
    133 }
    134