Home | History | Annotate | Download | only in Target 
      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/PassManager.h"
     22 #include "llvm/Target/TargetLibraryInfo.h"
     23 #include <cstring>
     24 
     25 using namespace llvm;
     26 
     27 inline TargetLibraryInfo *unwrap(LLVMTargetLibraryInfoRef P) {
     28   return reinterpret_cast<TargetLibraryInfo*>(P);
     29 }
     30 
     31 inline LLVMTargetLibraryInfoRef wrap(const TargetLibraryInfo *P) {
     32   TargetLibraryInfo *X = const_cast<TargetLibraryInfo*>(P);
     33   return reinterpret_cast<LLVMTargetLibraryInfoRef>(X);
     34 }
     35 
     36 void llvm::initializeTarget(PassRegistry &Registry) {
     37   initializeDataLayoutPassPass(Registry);
     38   initializeTargetLibraryInfoPass(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   // The DataLayoutPass must now be in sync with the module. Unfortunatelly we
     51   // cannot enforce that from the C api.
     52   unwrap(PM)->add(new DataLayoutPass(*unwrap(TD)));
     53 }
     54 
     55 void LLVMAddTargetLibraryInfo(LLVMTargetLibraryInfoRef TLI,
     56                               LLVMPassManagerRef PM) {
     57   unwrap(PM)->add(new TargetLibraryInfo(*unwrap(TLI)));
     58 }
     59 
     60 char *LLVMCopyStringRepOfTargetData(LLVMTargetDataRef TD) {
     61   std::string StringRep = unwrap(TD)->getStringRepresentation();
     62   return strdup(StringRep.c_str());
     63 }
     64 
     65 LLVMByteOrdering LLVMByteOrder(LLVMTargetDataRef TD) {
     66   return unwrap(TD)->isLittleEndian() ? LLVMLittleEndian : LLVMBigEndian;
     67 }
     68 
     69 unsigned LLVMPointerSize(LLVMTargetDataRef TD) {
     70   return unwrap(TD)->getPointerSize(0);
     71 }
     72 
     73 unsigned LLVMPointerSizeForAS(LLVMTargetDataRef TD, unsigned AS) {
     74   return unwrap(TD)->getPointerSize(AS);
     75 }
     76 
     77 LLVMTypeRef LLVMIntPtrType(LLVMTargetDataRef TD) {
     78   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext()));
     79 }
     80 
     81 LLVMTypeRef LLVMIntPtrTypeForAS(LLVMTargetDataRef TD, unsigned AS) {
     82   return wrap(unwrap(TD)->getIntPtrType(getGlobalContext(), AS));
     83 }
     84 
     85 LLVMTypeRef LLVMIntPtrTypeInContext(LLVMContextRef C, LLVMTargetDataRef TD) {
     86   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C)));
     87 }
     88 
     89 LLVMTypeRef LLVMIntPtrTypeForASInContext(LLVMContextRef C, LLVMTargetDataRef TD, unsigned AS) {
     90   return wrap(unwrap(TD)->getIntPtrType(*unwrap(C), AS));
     91 }
     92 
     93 unsigned long long LLVMSizeOfTypeInBits(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
     94   return unwrap(TD)->getTypeSizeInBits(unwrap(Ty));
     95 }
     96 
     97 unsigned long long LLVMStoreSizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
     98   return unwrap(TD)->getTypeStoreSize(unwrap(Ty));
     99 }
    100 
    101 unsigned long long LLVMABISizeOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
    102   return unwrap(TD)->getTypeAllocSize(unwrap(Ty));
    103 }
    104 
    105 unsigned LLVMABIAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
    106   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
    107 }
    108 
    109 unsigned LLVMCallFrameAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
    110   return unwrap(TD)->getABITypeAlignment(unwrap(Ty));
    111 }
    112 
    113 unsigned LLVMPreferredAlignmentOfType(LLVMTargetDataRef TD, LLVMTypeRef Ty) {
    114   return unwrap(TD)->getPrefTypeAlignment(unwrap(Ty));
    115 }
    116 
    117 unsigned LLVMPreferredAlignmentOfGlobal(LLVMTargetDataRef TD,
    118                                         LLVMValueRef GlobalVar) {
    119   return unwrap(TD)->getPreferredAlignment(unwrap<GlobalVariable>(GlobalVar));
    120 }
    121 
    122 unsigned LLVMElementAtOffset(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
    123                              unsigned long long Offset) {
    124   StructType *STy = unwrap<StructType>(StructTy);
    125   return unwrap(TD)->getStructLayout(STy)->getElementContainingOffset(Offset);
    126 }
    127 
    128 unsigned long long LLVMOffsetOfElement(LLVMTargetDataRef TD, LLVMTypeRef StructTy,
    129                                        unsigned Element) {
    130   StructType *STy = unwrap<StructType>(StructTy);
    131   return unwrap(TD)->getStructLayout(STy)->getElementOffset(Element);
    132 }
    133 
    134 void LLVMDisposeTargetData(LLVMTargetDataRef TD) {
    135   delete unwrap(TD);
    136 }
    137