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1 //===-- ExternalFunctions.cpp - Implement External Functions --------------===//
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2 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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3 // The LLVM Compiler Infrastructure
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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4 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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8 //===----------------------------------------------------------------------===//
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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9 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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10 // This file contains both code to deal with invoking "external" functions, but
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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11 // also contains code that implements "exported" external functions.
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12 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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13 // There are currently two mechanisms for handling external functions in the
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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14 // Interpreter. The first is to implement lle_* wrapper functions that are
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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15 // specific to well-known library functions which manually translate the
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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16 // arguments from GenericValues and make the call. If such a wrapper does
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17 // not exist, and libffi is available, then the Interpreter will attempt to
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18 // invoke the function using libffi, after finding its address.
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19 //
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 //===----------------------------------------------------------------------===//
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21
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22 #include "Interpreter.h"
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120
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23 #include "llvm/ADT/APInt.h"
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24 #include "llvm/ADT/ArrayRef.h"
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121
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25 #include "llvm/Config/config.h" // Detect libffi
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120
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26 #include "llvm/ExecutionEngine/GenericValue.h"
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27 #include "llvm/IR/DataLayout.h"
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28 #include "llvm/IR/DerivedTypes.h"
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120
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29 #include "llvm/IR/Function.h"
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30 #include "llvm/IR/Type.h"
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31 #include "llvm/Support/Casting.h"
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32 #include "llvm/Support/DynamicLibrary.h"
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33 #include "llvm/Support/ErrorHandling.h"
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34 #include "llvm/Support/ManagedStatic.h"
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35 #include "llvm/Support/Mutex.h"
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121
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36 #include "llvm/Support/UniqueLock.h"
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120
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37 #include "llvm/Support/raw_ostream.h"
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38 #include <cassert>
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39 #include <cmath>
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40 #include <csignal>
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120
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41 #include <cstdint>
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42 #include <cstdio>
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43 #include <cstring>
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44 #include <map>
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120
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45 #include <string>
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46 #include <utility>
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47 #include <vector>
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48
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49 #ifdef HAVE_FFI_CALL
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50 #ifdef HAVE_FFI_H
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51 #include <ffi.h>
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52 #define USE_LIBFFI
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53 #elif HAVE_FFI_FFI_H
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54 #include <ffi/ffi.h>
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55 #define USE_LIBFFI
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56 #endif
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57 #endif
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58
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59 using namespace llvm;
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60
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61 static ManagedStatic<sys::Mutex> FunctionsLock;
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62
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95
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63 typedef GenericValue (*ExFunc)(FunctionType *, ArrayRef<GenericValue>);
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64 static ManagedStatic<std::map<const Function *, ExFunc> > ExportedFunctions;
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83
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65 static ManagedStatic<std::map<std::string, ExFunc> > FuncNames;
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66
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67 #ifdef USE_LIBFFI
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68 typedef void (*RawFunc)();
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69 static ManagedStatic<std::map<const Function *, RawFunc> > RawFunctions;
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70 #endif
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71
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72 static Interpreter *TheInterpreter;
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73
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74 static char getTypeID(Type *Ty) {
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75 switch (Ty->getTypeID()) {
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76 case Type::VoidTyID: return 'V';
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35
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77 #ifndef noCbC
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78 case Type::__CodeTyID: return 'V';
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79 #endif
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80 case Type::IntegerTyID:
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81 switch (cast<IntegerType>(Ty)->getBitWidth()) {
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82 case 1: return 'o';
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83 case 8: return 'B';
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84 case 16: return 'S';
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85 case 32: return 'I';
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86 case 64: return 'L';
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87 default: return 'N';
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88 }
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89 case Type::FloatTyID: return 'F';
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90 case Type::DoubleTyID: return 'D';
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91 case Type::PointerTyID: return 'P';
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92 case Type::FunctionTyID:return 'M';
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93 case Type::StructTyID: return 'T';
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94 case Type::ArrayTyID: return 'A';
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95 default: return 'U';
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96 }
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97 }
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98
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99 // Try to find address of external function given a Function object.
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100 // Please note, that interpreter doesn't know how to assemble a
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101 // real call in general case (this is JIT job), that's why it assumes,
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102 // that all external functions has the same (and pretty "general") signature.
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103 // The typical example of such functions are "lle_X_" ones.
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104 static ExFunc lookupFunction(const Function *F) {
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105 // Function not found, look it up... start by figuring out what the
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106 // composite function name should be.
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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107 std::string ExtName = "lle_";
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108 FunctionType *FT = F->getFunctionType();
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109 for (unsigned i = 0, e = FT->getNumContainedTypes(); i != e; ++i)
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110 ExtName += getTypeID(FT->getContainedType(i));
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95
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111 ExtName += ("_" + F->getName()).str();
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112
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113 sys::ScopedLock Writer(*FunctionsLock);
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83
|
114 ExFunc FnPtr = (*FuncNames)[ExtName];
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77
|
115 if (!FnPtr)
|
95
|
116 FnPtr = (*FuncNames)[("lle_X_" + F->getName()).str()];
|
77
|
117 if (!FnPtr) // Try calling a generic function... if it exists...
|
95
|
118 FnPtr = (ExFunc)(intptr_t)sys::DynamicLibrary::SearchForAddressOfSymbol(
|
|
119 ("lle_X_" + F->getName()).str());
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77
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120 if (FnPtr)
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121 ExportedFunctions->insert(std::make_pair(F, FnPtr)); // Cache for later
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122 return FnPtr;
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123 }
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124
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125 #ifdef USE_LIBFFI
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126 static ffi_type *ffiTypeFor(Type *Ty) {
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127 switch (Ty->getTypeID()) {
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128 case Type::VoidTyID: return &ffi_type_void;
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35
|
129 #ifndef noCbC
|
|
130 case Type::__CodeTyID: return &ffi_type_void;
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|
131 #endif
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132 case Type::IntegerTyID:
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133 switch (cast<IntegerType>(Ty)->getBitWidth()) {
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134 case 8: return &ffi_type_sint8;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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135 case 16: return &ffi_type_sint16;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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136 case 32: return &ffi_type_sint32;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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137 case 64: return &ffi_type_sint64;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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138 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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139 case Type::FloatTyID: return &ffi_type_float;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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140 case Type::DoubleTyID: return &ffi_type_double;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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141 case Type::PointerTyID: return &ffi_type_pointer;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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142 default: break;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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143 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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144 // TODO: Support other types such as StructTyID, ArrayTyID, OpaqueTyID, etc.
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145 report_fatal_error("Type could not be mapped for use with libffi.");
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146 return NULL;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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147 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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148
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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149 static void *ffiValueFor(Type *Ty, const GenericValue &AV,
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150 void *ArgDataPtr) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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151 switch (Ty->getTypeID()) {
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152 case Type::IntegerTyID:
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153 switch (cast<IntegerType>(Ty)->getBitWidth()) {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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154 case 8: {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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155 int8_t *I8Ptr = (int8_t *) ArgDataPtr;
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156 *I8Ptr = (int8_t) AV.IntVal.getZExtValue();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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157 return ArgDataPtr;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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158 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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159 case 16: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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160 int16_t *I16Ptr = (int16_t *) ArgDataPtr;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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161 *I16Ptr = (int16_t) AV.IntVal.getZExtValue();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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162 return ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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163 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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164 case 32: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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165 int32_t *I32Ptr = (int32_t *) ArgDataPtr;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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changeset
|
166 *I32Ptr = (int32_t) AV.IntVal.getZExtValue();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
167 return ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
168 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
169 case 64: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
170 int64_t *I64Ptr = (int64_t *) ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
171 *I64Ptr = (int64_t) AV.IntVal.getZExtValue();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
172 return ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
173 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
174 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
175 case Type::FloatTyID: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
176 float *FloatPtr = (float *) ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
177 *FloatPtr = AV.FloatVal;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
178 return ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
179 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
180 case Type::DoubleTyID: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
181 double *DoublePtr = (double *) ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
182 *DoublePtr = AV.DoubleVal;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
183 return ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
184 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
185 case Type::PointerTyID: {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
186 void **PtrPtr = (void **) ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
187 *PtrPtr = GVTOP(AV);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
188 return ArgDataPtr;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
189 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
190 default: break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
191 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
192 // TODO: Support other types such as StructTyID, ArrayTyID, OpaqueTyID, etc.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
193 report_fatal_error("Type value could not be mapped for use with libffi.");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
194 return NULL;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
195 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
196
|
95
|
197 static bool ffiInvoke(RawFunc Fn, Function *F, ArrayRef<GenericValue> ArgVals,
|
|
198 const DataLayout &TD, GenericValue &Result) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
199 ffi_cif cif;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
200 FunctionType *FTy = F->getFunctionType();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
201 const unsigned NumArgs = F->arg_size();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
202
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
203 // TODO: We don't have type information about the remaining arguments, because
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
204 // this information is never passed into ExecutionEngine::runFunction().
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
205 if (ArgVals.size() > NumArgs && F->isVarArg()) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
206 report_fatal_error("Calling external var arg function '" + F->getName()
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
207 + "' is not supported by the Interpreter.");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
208 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
209
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
210 unsigned ArgBytes = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
211
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
212 std::vector<ffi_type*> args(NumArgs);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
213 for (Function::const_arg_iterator A = F->arg_begin(), E = F->arg_end();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
214 A != E; ++A) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
215 const unsigned ArgNo = A->getArgNo();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
216 Type *ArgTy = FTy->getParamType(ArgNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
217 args[ArgNo] = ffiTypeFor(ArgTy);
|
95
|
218 ArgBytes += TD.getTypeStoreSize(ArgTy);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
219 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
220
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
221 SmallVector<uint8_t, 128> ArgData;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
222 ArgData.resize(ArgBytes);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
223 uint8_t *ArgDataPtr = ArgData.data();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
224 SmallVector<void*, 16> values(NumArgs);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
225 for (Function::const_arg_iterator A = F->arg_begin(), E = F->arg_end();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
226 A != E; ++A) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
227 const unsigned ArgNo = A->getArgNo();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
228 Type *ArgTy = FTy->getParamType(ArgNo);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
229 values[ArgNo] = ffiValueFor(ArgTy, ArgVals[ArgNo], ArgDataPtr);
|
95
|
230 ArgDataPtr += TD.getTypeStoreSize(ArgTy);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
231 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
232
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
233 Type *RetTy = FTy->getReturnType();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
234 ffi_type *rtype = ffiTypeFor(RetTy);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
235
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
236 if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, NumArgs, rtype, &args[0]) == FFI_OK) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
237 SmallVector<uint8_t, 128> ret;
|
35
|
238 #ifndef noCbC
|
|
239 if (RetTy->getTypeID() != Type::VoidTyID && RetTy->getTypeID() != Type::__CodeTyID)
|
|
240 #else
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
241 if (RetTy->getTypeID() != Type::VoidTyID)
|
35
|
242 #endif
|
95
|
243 ret.resize(TD.getTypeStoreSize(RetTy));
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
244 ffi_call(&cif, Fn, ret.data(), values.data());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
245 switch (RetTy->getTypeID()) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
246 case Type::IntegerTyID:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
247 switch (cast<IntegerType>(RetTy)->getBitWidth()) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
248 case 8: Result.IntVal = APInt(8 , *(int8_t *) ret.data()); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
249 case 16: Result.IntVal = APInt(16, *(int16_t*) ret.data()); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
250 case 32: Result.IntVal = APInt(32, *(int32_t*) ret.data()); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
251 case 64: Result.IntVal = APInt(64, *(int64_t*) ret.data()); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
252 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
253 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
254 case Type::FloatTyID: Result.FloatVal = *(float *) ret.data(); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
255 case Type::DoubleTyID: Result.DoubleVal = *(double*) ret.data(); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
256 case Type::PointerTyID: Result.PointerVal = *(void **) ret.data(); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
257 default: break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
258 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
259 return true;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
260 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
261
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
262 return false;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
263 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
264 #endif // USE_LIBFFI
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
265
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
266 GenericValue Interpreter::callExternalFunction(Function *F,
|
95
|
267 ArrayRef<GenericValue> ArgVals) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
268 TheInterpreter = this;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
269
|
77
|
270 unique_lock<sys::Mutex> Guard(*FunctionsLock);
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
271
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
272 // Do a lookup to see if the function is in our cache... this should just be a
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
273 // deferred annotation!
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
274 std::map<const Function *, ExFunc>::iterator FI = ExportedFunctions->find(F);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
275 if (ExFunc Fn = (FI == ExportedFunctions->end()) ? lookupFunction(F)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
276 : FI->second) {
|
77
|
277 Guard.unlock();
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
278 return Fn(F->getFunctionType(), ArgVals);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
279 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
280
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
281 #ifdef USE_LIBFFI
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
282 std::map<const Function *, RawFunc>::iterator RF = RawFunctions->find(F);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
283 RawFunc RawFn;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
284 if (RF == RawFunctions->end()) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
285 RawFn = (RawFunc)(intptr_t)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
286 sys::DynamicLibrary::SearchForAddressOfSymbol(F->getName());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
287 if (!RawFn)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
288 RawFn = (RawFunc)(intptr_t)getPointerToGlobalIfAvailable(F);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
289 if (RawFn != 0)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
290 RawFunctions->insert(std::make_pair(F, RawFn)); // Cache for later
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
291 } else {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
292 RawFn = RF->second;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
293 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
294
|
77
|
295 Guard.unlock();
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
296
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
297 GenericValue Result;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
298 if (RawFn != 0 && ffiInvoke(RawFn, F, ArgVals, getDataLayout(), Result))
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
299 return Result;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
300 #endif // USE_LIBFFI
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
301
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
302 if (F->getName() == "__main")
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
303 errs() << "Tried to execute an unknown external function: "
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
304 << *F->getType() << " __main\n";
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
305 else
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
306 report_fatal_error("Tried to execute an unknown external function: " +
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
307 F->getName());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
308 #ifndef USE_LIBFFI
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
309 errs() << "Recompiling LLVM with --enable-libffi might help.\n";
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
310 #endif
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
311 return GenericValue();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
312 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
313
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
314 //===----------------------------------------------------------------------===//
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
315 // Functions "exported" to the running application...
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
316 //
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
317
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
318 // void atexit(Function*)
|
95
|
319 static GenericValue lle_X_atexit(FunctionType *FT,
|
|
320 ArrayRef<GenericValue> Args) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
321 assert(Args.size() == 1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
322 TheInterpreter->addAtExitHandler((Function*)GVTOP(Args[0]));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
323 GenericValue GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
324 GV.IntVal = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
325 return GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
326 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
327
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
328 // void exit(int)
|
95
|
329 static GenericValue lle_X_exit(FunctionType *FT, ArrayRef<GenericValue> Args) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
330 TheInterpreter->exitCalled(Args[0]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
331 return GenericValue();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
332 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
333
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
334 // void abort(void)
|
95
|
335 static GenericValue lle_X_abort(FunctionType *FT, ArrayRef<GenericValue> Args) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
336 //FIXME: should we report or raise here?
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
337 //report_fatal_error("Interpreted program raised SIGABRT");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
338 raise (SIGABRT);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
339 return GenericValue();
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
340 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
341
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
342 // int sprintf(char *, const char *, ...) - a very rough implementation to make
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
343 // output useful.
|
95
|
344 static GenericValue lle_X_sprintf(FunctionType *FT,
|
|
345 ArrayRef<GenericValue> Args) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
346 char *OutputBuffer = (char *)GVTOP(Args[0]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
347 const char *FmtStr = (const char *)GVTOP(Args[1]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
348 unsigned ArgNo = 2;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
349
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
350 // printf should return # chars printed. This is completely incorrect, but
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
351 // close enough for now.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
352 GenericValue GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
353 GV.IntVal = APInt(32, strlen(FmtStr));
|
120
|
354 while (true) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
355 switch (*FmtStr) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
356 case 0: return GV; // Null terminator...
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
357 default: // Normal nonspecial character
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
358 sprintf(OutputBuffer++, "%c", *FmtStr++);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
359 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
360 case '\\': { // Handle escape codes
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
361 sprintf(OutputBuffer, "%c%c", *FmtStr, *(FmtStr+1));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
362 FmtStr += 2; OutputBuffer += 2;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
363 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
364 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
365 case '%': { // Handle format specifiers
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
366 char FmtBuf[100] = "", Buffer[1000] = "";
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
367 char *FB = FmtBuf;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
368 *FB++ = *FmtStr++;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
369 char Last = *FB++ = *FmtStr++;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
370 unsigned HowLong = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
371 while (Last != 'c' && Last != 'd' && Last != 'i' && Last != 'u' &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
372 Last != 'o' && Last != 'x' && Last != 'X' && Last != 'e' &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
373 Last != 'E' && Last != 'g' && Last != 'G' && Last != 'f' &&
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
374 Last != 'p' && Last != 's' && Last != '%') {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
375 if (Last == 'l' || Last == 'L') HowLong++; // Keep track of l's
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
376 Last = *FB++ = *FmtStr++;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
377 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
378 *FB = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
379
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
380 switch (Last) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
381 case '%':
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
382 memcpy(Buffer, "%", 2); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
383 case 'c':
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
384 sprintf(Buffer, FmtBuf, uint32_t(Args[ArgNo++].IntVal.getZExtValue()));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
385 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
386 case 'd': case 'i':
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
387 case 'u': case 'o':
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
388 case 'x': case 'X':
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
389 if (HowLong >= 1) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
390 if (HowLong == 1 &&
|
95
|
391 TheInterpreter->getDataLayout().getPointerSizeInBits() == 64 &&
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
392 sizeof(long) < sizeof(int64_t)) {
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
393 // Make sure we use %lld with a 64 bit argument because we might be
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
394 // compiling LLI on a 32 bit compiler.
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
395 unsigned Size = strlen(FmtBuf);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
396 FmtBuf[Size] = FmtBuf[Size-1];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
397 FmtBuf[Size+1] = 0;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
398 FmtBuf[Size-1] = 'l';
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
399 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
400 sprintf(Buffer, FmtBuf, Args[ArgNo++].IntVal.getZExtValue());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
401 } else
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
402 sprintf(Buffer, FmtBuf,uint32_t(Args[ArgNo++].IntVal.getZExtValue()));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
403 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
404 case 'e': case 'E': case 'g': case 'G': case 'f':
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
405 sprintf(Buffer, FmtBuf, Args[ArgNo++].DoubleVal); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
406 case 'p':
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
407 sprintf(Buffer, FmtBuf, (void*)GVTOP(Args[ArgNo++])); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
408 case 's':
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
409 sprintf(Buffer, FmtBuf, (char*)GVTOP(Args[ArgNo++])); break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
410 default:
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
411 errs() << "<unknown printf code '" << *FmtStr << "'!>";
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
412 ArgNo++; break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
413 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
414 size_t Len = strlen(Buffer);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
415 memcpy(OutputBuffer, Buffer, Len + 1);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
416 OutputBuffer += Len;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
417 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
418 break;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
419 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
420 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
421 return GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
422 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
423
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
424 // int printf(const char *, ...) - a very rough implementation to make output
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
425 // useful.
|
95
|
426 static GenericValue lle_X_printf(FunctionType *FT,
|
|
427 ArrayRef<GenericValue> Args) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
428 char Buffer[10000];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
429 std::vector<GenericValue> NewArgs;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
430 NewArgs.push_back(PTOGV((void*)&Buffer[0]));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
431 NewArgs.insert(NewArgs.end(), Args.begin(), Args.end());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
432 GenericValue GV = lle_X_sprintf(FT, NewArgs);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
433 outs() << Buffer;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
434 return GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
435 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
436
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
437 // int sscanf(const char *format, ...);
|
95
|
438 static GenericValue lle_X_sscanf(FunctionType *FT,
|
|
439 ArrayRef<GenericValue> args) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
440 assert(args.size() < 10 && "Only handle up to 10 args to sscanf right now!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
441
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
442 char *Args[10];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
443 for (unsigned i = 0; i < args.size(); ++i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
444 Args[i] = (char*)GVTOP(args[i]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
445
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
446 GenericValue GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
447 GV.IntVal = APInt(32, sscanf(Args[0], Args[1], Args[2], Args[3], Args[4],
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
448 Args[5], Args[6], Args[7], Args[8], Args[9]));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
449 return GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
450 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
451
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
452 // int scanf(const char *format, ...);
|
95
|
453 static GenericValue lle_X_scanf(FunctionType *FT, ArrayRef<GenericValue> args) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
454 assert(args.size() < 10 && "Only handle up to 10 args to scanf right now!");
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
455
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
456 char *Args[10];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
457 for (unsigned i = 0; i < args.size(); ++i)
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
458 Args[i] = (char*)GVTOP(args[i]);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
459
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
460 GenericValue GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
461 GV.IntVal = APInt(32, scanf( Args[0], Args[1], Args[2], Args[3], Args[4],
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
462 Args[5], Args[6], Args[7], Args[8], Args[9]));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
463 return GV;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
464 }
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
465
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
466 // int fprintf(FILE *, const char *, ...) - a very rough implementation to make
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
467 // output useful.
|
95
|
468 static GenericValue lle_X_fprintf(FunctionType *FT,
|
|
469 ArrayRef<GenericValue> Args) {
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
470 assert(Args.size() >= 2);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
471 char Buffer[10000];
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
472 std::vector<GenericValue> NewArgs;
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
473 NewArgs.push_back(PTOGV(Buffer));
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
474 NewArgs.insert(NewArgs.end(), Args.begin()+1, Args.end());
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
475 GenericValue GV = lle_X_sprintf(FT, NewArgs);
|
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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476
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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477 fputs(Buffer, (FILE *) GVTOP(Args[0]));
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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478 return GV;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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479 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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480
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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481 static GenericValue lle_X_memset(FunctionType *FT,
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95
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482 ArrayRef<GenericValue> Args) {
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0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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483 int val = (int)Args[1].IntVal.getSExtValue();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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484 size_t len = (size_t)Args[2].IntVal.getZExtValue();
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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485 memset((void *)GVTOP(Args[0]), val, len);
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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486 // llvm.memset.* returns void, lle_X_* returns GenericValue,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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487 // so here we return GenericValue with IntVal set to zero
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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488 GenericValue GV;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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489 GV.IntVal = 0;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
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490 return GV;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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491 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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492
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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493 static GenericValue lle_X_memcpy(FunctionType *FT,
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95
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494 ArrayRef<GenericValue> Args) {
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0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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495 memcpy(GVTOP(Args[0]), GVTOP(Args[1]),
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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496 (size_t)(Args[2].IntVal.getLimitedValue()));
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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497
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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498 // llvm.memcpy* returns void, lle_X_* returns GenericValue,
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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499 // so here we return GenericValue with IntVal set to zero
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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500 GenericValue GV;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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501 GV.IntVal = 0;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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502 return GV;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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503 }
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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504
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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505 void Interpreter::initializeExternalFunctions() {
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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506 sys::ScopedLock Writer(*FunctionsLock);
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83
|
507 (*FuncNames)["lle_X_atexit"] = lle_X_atexit;
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508 (*FuncNames)["lle_X_exit"] = lle_X_exit;
|
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509 (*FuncNames)["lle_X_abort"] = lle_X_abort;
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0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
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510
|
83
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511 (*FuncNames)["lle_X_printf"] = lle_X_printf;
|
|
512 (*FuncNames)["lle_X_sprintf"] = lle_X_sprintf;
|
|
513 (*FuncNames)["lle_X_sscanf"] = lle_X_sscanf;
|
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514 (*FuncNames)["lle_X_scanf"] = lle_X_scanf;
|
|
515 (*FuncNames)["lle_X_fprintf"] = lle_X_fprintf;
|
|
516 (*FuncNames)["lle_X_memset"] = lle_X_memset;
|
|
517 (*FuncNames)["lle_X_memcpy"] = lle_X_memcpy;
|
0
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
518 }
|