mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-14 11:32:34 +00:00
7a73b80b90
system. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7014 91177308-0d34-0410-b5e6-96231b3b80d8
779 lines
26 KiB
C++
779 lines
26 KiB
C++
//===-- ExternalFunctions.cpp - Implement External Functions --------------===//
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//
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// This file contains both code to deal with invoking "external" functions, but
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// also contains code that implements "exported" external functions.
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//
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// External functions in LLI are implemented by dlopen'ing the lli executable
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// and using dlsym to look op the functions that we want to invoke. If a
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// function is found, then the arguments are mangled and passed in to the
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// function call.
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//
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//===----------------------------------------------------------------------===//
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#include "Interpreter.h"
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#include "ExecutionAnnotations.h"
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#include "llvm/Module.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/SymbolTable.h"
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#include "llvm/Target/TargetData.h"
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#include <map>
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#include "Config/dlfcn.h"
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#include "Config/link.h"
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#include <cmath>
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#include "Config/stdio.h"
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using std::vector;
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typedef GenericValue (*ExFunc)(FunctionType *, const vector<GenericValue> &);
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static std::map<const Function *, ExFunc> Functions;
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static std::map<std::string, ExFunc> FuncNames;
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static Interpreter *TheInterpreter;
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// getCurrentExecutablePath() - Return the directory that the lli executable
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// lives in.
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//
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std::string Interpreter::getCurrentExecutablePath() const {
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Dl_info Info;
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if (dladdr(&TheInterpreter, &Info) == 0) return "";
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std::string LinkAddr(Info.dli_fname);
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unsigned SlashPos = LinkAddr.rfind('/');
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if (SlashPos != std::string::npos)
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LinkAddr.resize(SlashPos); // Trim the executable name off...
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return LinkAddr;
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}
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static char getTypeID(const Type *Ty) {
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switch (Ty->getPrimitiveID()) {
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case Type::VoidTyID: return 'V';
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case Type::BoolTyID: return 'o';
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case Type::UByteTyID: return 'B';
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case Type::SByteTyID: return 'b';
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case Type::UShortTyID: return 'S';
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case Type::ShortTyID: return 's';
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case Type::UIntTyID: return 'I';
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case Type::IntTyID: return 'i';
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case Type::ULongTyID: return 'L';
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case Type::LongTyID: return 'l';
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case Type::FloatTyID: return 'F';
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case Type::DoubleTyID: return 'D';
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case Type::PointerTyID: return 'P';
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case Type::FunctionTyID: return 'M';
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case Type::StructTyID: return 'T';
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case Type::ArrayTyID: return 'A';
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case Type::OpaqueTyID: return 'O';
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default: return 'U';
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}
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}
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static ExFunc lookupFunction(const Function *M) {
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// Function not found, look it up... start by figuring out what the
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// composite function name should be.
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std::string ExtName = "lle_";
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const FunctionType *MT = M->getFunctionType();
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for (unsigned i = 0; const Type *Ty = MT->getContainedType(i); ++i)
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ExtName += getTypeID(Ty);
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ExtName += "_" + M->getName();
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//std::cout << "Tried: '" << ExtName << "'\n";
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ExFunc FnPtr = FuncNames[ExtName];
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if (FnPtr == 0)
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FnPtr = (ExFunc)dlsym(RTLD_DEFAULT, ExtName.c_str());
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if (FnPtr == 0)
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FnPtr = FuncNames["lle_X_"+M->getName()];
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if (FnPtr == 0) // Try calling a generic function... if it exists...
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FnPtr = (ExFunc)dlsym(RTLD_DEFAULT, ("lle_X_"+M->getName()).c_str());
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if (FnPtr != 0)
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Functions.insert(std::make_pair(M, FnPtr)); // Cache for later
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return FnPtr;
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}
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GenericValue Interpreter::callExternalFunction(Function *M,
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const std::vector<GenericValue> &ArgVals) {
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TheInterpreter = this;
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// Do a lookup to see if the function is in our cache... this should just be a
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// defered annotation!
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std::map<const Function *, ExFunc>::iterator FI = Functions.find(M);
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ExFunc Fn = (FI == Functions.end()) ? lookupFunction(M) : FI->second;
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if (Fn == 0) {
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std::cout << "Tried to execute an unknown external function: "
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<< M->getType()->getDescription() << " " << M->getName() << "\n";
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return GenericValue();
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}
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// TODO: FIXME when types are not const!
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GenericValue Result = Fn(const_cast<FunctionType*>(M->getFunctionType()),
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ArgVals);
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return Result;
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}
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//===----------------------------------------------------------------------===//
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// Functions "exported" to the running application...
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//
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extern "C" { // Don't add C++ manglings to llvm mangling :)
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// void putchar(sbyte)
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GenericValue lle_Vb_putchar(FunctionType *M, const vector<GenericValue> &Args) {
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std::cout << Args[0].SByteVal;
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return GenericValue();
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}
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// int putchar(int)
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GenericValue lle_ii_putchar(FunctionType *M, const vector<GenericValue> &Args) {
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std::cout << ((char)Args[0].IntVal) << std::flush;
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return Args[0];
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}
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// void putchar(ubyte)
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GenericValue lle_VB_putchar(FunctionType *M, const vector<GenericValue> &Args) {
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std::cout << Args[0].SByteVal << std::flush;
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return Args[0];
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}
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// void atexit(Function*)
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GenericValue lle_X_atexit(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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TheInterpreter->addAtExitHandler((Function*)GVTOP(Args[0]));
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GenericValue GV;
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GV.IntVal = 0;
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return GV;
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}
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// void exit(int)
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GenericValue lle_X_exit(FunctionType *M, const vector<GenericValue> &Args) {
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TheInterpreter->exitCalled(Args[0]);
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return GenericValue();
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}
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// void abort(void)
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GenericValue lle_X_abort(FunctionType *M, const vector<GenericValue> &Args) {
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std::cerr << "***PROGRAM ABORTED***!\n";
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GenericValue GV;
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GV.IntVal = 1;
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TheInterpreter->exitCalled(GV);
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return GenericValue();
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}
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// void *malloc(uint)
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GenericValue lle_X_malloc(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1 && "Malloc expects one argument!");
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return PTOGV(malloc(Args[0].UIntVal));
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}
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// void *calloc(uint, uint)
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GenericValue lle_X_calloc(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 2 && "calloc expects two arguments!");
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return PTOGV(calloc(Args[0].UIntVal, Args[1].UIntVal));
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}
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// void free(void *)
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GenericValue lle_X_free(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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free(GVTOP(Args[0]));
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return GenericValue();
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}
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// int atoi(char *)
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GenericValue lle_X_atoi(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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GenericValue GV;
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GV.IntVal = atoi((char*)GVTOP(Args[0]));
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return GV;
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}
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// double pow(double, double)
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GenericValue lle_X_pow(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 2);
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GenericValue GV;
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GV.DoubleVal = pow(Args[0].DoubleVal, Args[1].DoubleVal);
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return GV;
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}
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// double exp(double)
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GenericValue lle_X_exp(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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GenericValue GV;
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GV.DoubleVal = exp(Args[0].DoubleVal);
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return GV;
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}
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// double sqrt(double)
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GenericValue lle_X_sqrt(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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GenericValue GV;
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GV.DoubleVal = sqrt(Args[0].DoubleVal);
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return GV;
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}
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// double log(double)
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GenericValue lle_X_log(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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GenericValue GV;
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GV.DoubleVal = log(Args[0].DoubleVal);
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return GV;
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}
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// double floor(double)
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GenericValue lle_X_floor(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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GenericValue GV;
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GV.DoubleVal = floor(Args[0].DoubleVal);
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return GV;
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}
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// double drand48()
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GenericValue lle_X_drand48(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 0);
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GenericValue GV;
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GV.DoubleVal = drand48();
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return GV;
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}
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// long lrand48()
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GenericValue lle_X_lrand48(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 0);
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GenericValue GV;
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GV.IntVal = lrand48();
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return GV;
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}
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// void srand48(long)
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GenericValue lle_X_srand48(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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srand48(Args[0].IntVal);
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return GenericValue();
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}
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// void srand(uint)
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GenericValue lle_X_srand(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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srand(Args[0].UIntVal);
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return GenericValue();
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}
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// int puts(const char*)
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GenericValue lle_X_puts(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 1);
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GenericValue GV;
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GV.IntVal = puts((char*)GVTOP(Args[0]));
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return GV;
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}
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// int sprintf(sbyte *, sbyte *, ...) - a very rough implementation to make
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// output useful.
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GenericValue lle_X_sprintf(FunctionType *M, const vector<GenericValue> &Args) {
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char *OutputBuffer = (char *)GVTOP(Args[0]);
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const char *FmtStr = (const char *)GVTOP(Args[1]);
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unsigned ArgNo = 2;
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// printf should return # chars printed. This is completely incorrect, but
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// close enough for now.
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GenericValue GV; GV.IntVal = strlen(FmtStr);
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while (1) {
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switch (*FmtStr) {
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case 0: return GV; // Null terminator...
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default: // Normal nonspecial character
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sprintf(OutputBuffer++, "%c", *FmtStr++);
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break;
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case '\\': { // Handle escape codes
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sprintf(OutputBuffer, "%c%c", *FmtStr, *(FmtStr+1));
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FmtStr += 2; OutputBuffer += 2;
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break;
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}
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case '%': { // Handle format specifiers
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char FmtBuf[100] = "", Buffer[1000] = "";
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char *FB = FmtBuf;
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*FB++ = *FmtStr++;
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char Last = *FB++ = *FmtStr++;
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unsigned HowLong = 0;
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while (Last != 'c' && Last != 'd' && Last != 'i' && Last != 'u' &&
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Last != 'o' && Last != 'x' && Last != 'X' && Last != 'e' &&
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Last != 'E' && Last != 'g' && Last != 'G' && Last != 'f' &&
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Last != 'p' && Last != 's' && Last != '%') {
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if (Last == 'l' || Last == 'L') HowLong++; // Keep track of l's
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Last = *FB++ = *FmtStr++;
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}
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*FB = 0;
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switch (Last) {
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case '%':
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sprintf(Buffer, FmtBuf); break;
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case 'c':
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sprintf(Buffer, FmtBuf, Args[ArgNo++].IntVal); break;
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case 'd': case 'i':
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case 'u': case 'o':
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case 'x': case 'X':
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if (HowLong >= 1) {
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if (HowLong == 1 && TheInterpreter->getModule().has64BitPointers() &&
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sizeof(long) < sizeof(long long)) {
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// Make sure we use %lld with a 64 bit argument because we might be
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// compiling LLI on a 32 bit compiler.
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unsigned Size = strlen(FmtBuf);
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FmtBuf[Size] = FmtBuf[Size-1];
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FmtBuf[Size+1] = 0;
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FmtBuf[Size-1] = 'l';
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}
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sprintf(Buffer, FmtBuf, Args[ArgNo++].ULongVal);
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} else
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sprintf(Buffer, FmtBuf, Args[ArgNo++].IntVal); break;
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case 'e': case 'E': case 'g': case 'G': case 'f':
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sprintf(Buffer, FmtBuf, Args[ArgNo++].DoubleVal); break;
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case 'p':
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sprintf(Buffer, FmtBuf, (void*)GVTOP(Args[ArgNo++])); break;
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case 's':
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sprintf(Buffer, FmtBuf, (char*)GVTOP(Args[ArgNo++])); break;
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default: std::cout << "<unknown printf code '" << *FmtStr << "'!>";
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ArgNo++; break;
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}
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strcpy(OutputBuffer, Buffer);
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OutputBuffer += strlen(Buffer);
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}
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break;
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}
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}
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}
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// int printf(sbyte *, ...) - a very rough implementation to make output useful.
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GenericValue lle_X_printf(FunctionType *M, const vector<GenericValue> &Args) {
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char Buffer[10000];
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vector<GenericValue> NewArgs;
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NewArgs.push_back(PTOGV(Buffer));
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NewArgs.insert(NewArgs.end(), Args.begin(), Args.end());
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GenericValue GV = lle_X_sprintf(M, NewArgs);
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std::cout << Buffer;
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return GV;
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}
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static void ByteswapSCANFResults(const char *Fmt, void *Arg0, void *Arg1,
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void *Arg2, void *Arg3, void *Arg4, void *Arg5,
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void *Arg6, void *Arg7, void *Arg8) {
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void *Args[] = { Arg0, Arg1, Arg2, Arg3, Arg4, Arg5, Arg6, Arg7, Arg8, 0 };
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// Loop over the format string, munging read values as appropriate (performs
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// byteswaps as neccesary).
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unsigned ArgNo = 0;
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while (*Fmt) {
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if (*Fmt++ == '%') {
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// Read any flag characters that may be present...
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bool Suppress = false;
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bool Half = false;
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bool Long = false;
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bool LongLong = false; // long long or long double
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while (1) {
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switch (*Fmt++) {
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case '*': Suppress = true; break;
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case 'a': /*Allocate = true;*/ break; // We don't need to track this
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case 'h': Half = true; break;
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case 'l': Long = true; break;
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case 'q':
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case 'L': LongLong = true; break;
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default:
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if (Fmt[-1] > '9' || Fmt[-1] < '0') // Ignore field width specs
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goto Out;
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}
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}
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Out:
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// Read the conversion character
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if (!Suppress && Fmt[-1] != '%') { // Nothing to do?
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unsigned Size = 0;
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const Type *Ty = 0;
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switch (Fmt[-1]) {
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case 'i': case 'o': case 'u': case 'x': case 'X': case 'n': case 'p':
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case 'd':
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if (Long || LongLong) {
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Size = 8; Ty = Type::ULongTy;
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} else if (Half) {
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Size = 4; Ty = Type::UShortTy;
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} else {
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Size = 4; Ty = Type::UIntTy;
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}
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break;
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case 'e': case 'g': case 'E':
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case 'f':
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if (Long || LongLong) {
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Size = 8; Ty = Type::DoubleTy;
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} else {
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Size = 4; Ty = Type::FloatTy;
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}
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break;
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case 's': case 'c': case '[': // No byteswap needed
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Size = 1;
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Ty = Type::SByteTy;
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break;
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default: break;
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}
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if (Size) {
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GenericValue GV;
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void *Arg = Args[ArgNo++];
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memcpy(&GV, Arg, Size);
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TheInterpreter->StoreValueToMemory(GV, (GenericValue*)Arg, Ty);
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}
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}
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}
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}
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}
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// int sscanf(const char *format, ...);
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GenericValue lle_X_sscanf(FunctionType *M, const vector<GenericValue> &args) {
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assert(args.size() < 10 && "Only handle up to 10 args to sscanf right now!");
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char *Args[10];
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for (unsigned i = 0; i < args.size(); ++i)
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Args[i] = (char*)GVTOP(args[i]);
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GenericValue GV;
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GV.IntVal = sscanf(Args[0], Args[1], Args[2], Args[3], Args[4],
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Args[5], Args[6], Args[7], Args[8], Args[9]);
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ByteswapSCANFResults(Args[1], Args[2], Args[3], Args[4],
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Args[5], Args[6], Args[7], Args[8], Args[9], 0);
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return GV;
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}
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// int scanf(const char *format, ...);
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GenericValue lle_X_scanf(FunctionType *M, const vector<GenericValue> &args) {
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assert(args.size() < 10 && "Only handle up to 10 args to scanf right now!");
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char *Args[10];
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for (unsigned i = 0; i < args.size(); ++i)
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Args[i] = (char*)GVTOP(args[i]);
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GenericValue GV;
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GV.IntVal = scanf(Args[0], Args[1], Args[2], Args[3], Args[4],
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Args[5], Args[6], Args[7], Args[8], Args[9]);
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ByteswapSCANFResults(Args[0], Args[1], Args[2], Args[3], Args[4],
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Args[5], Args[6], Args[7], Args[8], Args[9]);
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return GV;
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}
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// int clock(void) - Profiling implementation
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GenericValue lle_i_clock(FunctionType *M, const vector<GenericValue> &Args) {
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extern int clock(void);
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GenericValue GV; GV.IntVal = clock();
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return GV;
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}
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//===----------------------------------------------------------------------===//
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// String Functions...
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//===----------------------------------------------------------------------===//
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// int strcmp(const char *S1, const char *S2);
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GenericValue lle_X_strcmp(FunctionType *M, const vector<GenericValue> &Args) {
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assert(Args.size() == 2);
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GenericValue Ret;
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Ret.IntVal = strcmp((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]));
|
|
return Ret;
|
|
}
|
|
|
|
// char *strcat(char *Dest, const char *src);
|
|
GenericValue lle_X_strcat(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 2);
|
|
return PTOGV(strcat((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1])));
|
|
}
|
|
|
|
// char *strcpy(char *Dest, const char *src);
|
|
GenericValue lle_X_strcpy(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 2);
|
|
return PTOGV(strcpy((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1])));
|
|
}
|
|
|
|
// long strlen(const char *src);
|
|
GenericValue lle_X_strlen(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
GenericValue Ret;
|
|
Ret.LongVal = strlen((char*)GVTOP(Args[0]));
|
|
return Ret;
|
|
}
|
|
|
|
// char *__strdup(const char *src);
|
|
GenericValue lle_X___strdup(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
return PTOGV(strdup((char*)GVTOP(Args[0])));
|
|
}
|
|
|
|
// void *memset(void *S, int C, size_t N)
|
|
GenericValue lle_X_memset(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 3);
|
|
return PTOGV(memset(GVTOP(Args[0]), Args[1].IntVal, Args[2].UIntVal));
|
|
}
|
|
|
|
// void *memcpy(void *Dest, void *src, size_t Size);
|
|
GenericValue lle_X_memcpy(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 3);
|
|
return PTOGV(memcpy((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]),
|
|
Args[2].UIntVal));
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// IO Functions...
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// getFILE - Turn a pointer in the host address space into a legit pointer in
|
|
// the interpreter address space. For the most part, this is an identity
|
|
// transformation, but if the program refers to stdio, stderr, stdin then they
|
|
// have pointers that are relative to the __iob array. If this is the case,
|
|
// change the FILE into the REAL stdio stream.
|
|
//
|
|
static FILE *getFILE(void *Ptr) {
|
|
static Module *LastMod = 0;
|
|
static PointerTy IOBBase = 0;
|
|
static unsigned FILESize;
|
|
|
|
if (LastMod != &TheInterpreter->getModule()) { // Module change or initialize?
|
|
Module *M = LastMod = &TheInterpreter->getModule();
|
|
|
|
// Check to see if the currently loaded module contains an __iob symbol...
|
|
GlobalVariable *IOB = 0;
|
|
SymbolTable &ST = M->getSymbolTable();
|
|
for (SymbolTable::iterator I = ST.begin(), E = ST.end(); I != E; ++I) {
|
|
SymbolTable::VarMap &M = I->second;
|
|
for (SymbolTable::VarMap::iterator J = M.begin(), E = M.end();
|
|
J != E; ++J)
|
|
if (J->first == "__iob")
|
|
if ((IOB = dyn_cast<GlobalVariable>(J->second)))
|
|
break;
|
|
if (IOB) break;
|
|
}
|
|
|
|
#if 0 /// FIXME! __iob support for LLI
|
|
// If we found an __iob symbol now, find out what the actual address it's
|
|
// held in is...
|
|
if (IOB) {
|
|
// Get the address the array lives in...
|
|
GlobalAddress *Address =
|
|
(GlobalAddress*)IOB->getOrCreateAnnotation(GlobalAddressAID);
|
|
IOBBase = (PointerTy)(GenericValue*)Address->Ptr;
|
|
|
|
// Figure out how big each element of the array is...
|
|
const ArrayType *AT =
|
|
dyn_cast<ArrayType>(IOB->getType()->getElementType());
|
|
if (AT)
|
|
FILESize = TD.getTypeSize(AT->getElementType());
|
|
else
|
|
FILESize = 16*8; // Default size
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// Check to see if this is a reference to __iob...
|
|
if (IOBBase) {
|
|
unsigned FDNum = ((unsigned long)Ptr-IOBBase)/FILESize;
|
|
if (FDNum == 0)
|
|
return stdin;
|
|
else if (FDNum == 1)
|
|
return stdout;
|
|
else if (FDNum == 2)
|
|
return stderr;
|
|
}
|
|
|
|
return (FILE*)Ptr;
|
|
}
|
|
|
|
|
|
// FILE *fopen(const char *filename, const char *mode);
|
|
GenericValue lle_X_fopen(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 2);
|
|
return PTOGV(fopen((const char *)GVTOP(Args[0]),
|
|
(const char *)GVTOP(Args[1])));
|
|
}
|
|
|
|
// int fclose(FILE *F);
|
|
GenericValue lle_X_fclose(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
GenericValue GV;
|
|
GV.IntVal = fclose(getFILE(GVTOP(Args[0])));
|
|
return GV;
|
|
}
|
|
|
|
// int feof(FILE *stream);
|
|
GenericValue lle_X_feof(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
GenericValue GV;
|
|
|
|
GV.IntVal = feof(getFILE(GVTOP(Args[0])));
|
|
return GV;
|
|
}
|
|
|
|
// size_t fread(void *ptr, size_t size, size_t nitems, FILE *stream);
|
|
GenericValue lle_X_fread(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 4);
|
|
GenericValue GV;
|
|
|
|
GV.UIntVal = fread((void*)GVTOP(Args[0]), Args[1].UIntVal,
|
|
Args[2].UIntVal, getFILE(GVTOP(Args[3])));
|
|
return GV;
|
|
}
|
|
|
|
// size_t fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream);
|
|
GenericValue lle_X_fwrite(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 4);
|
|
GenericValue GV;
|
|
|
|
GV.UIntVal = fwrite((void*)GVTOP(Args[0]), Args[1].UIntVal,
|
|
Args[2].UIntVal, getFILE(GVTOP(Args[3])));
|
|
return GV;
|
|
}
|
|
|
|
// char *fgets(char *s, int n, FILE *stream);
|
|
GenericValue lle_X_fgets(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 3);
|
|
return GVTOP(fgets((char*)GVTOP(Args[0]), Args[1].IntVal,
|
|
getFILE(GVTOP(Args[2]))));
|
|
}
|
|
|
|
// FILE *freopen(const char *path, const char *mode, FILE *stream);
|
|
GenericValue lle_X_freopen(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 3);
|
|
return PTOGV(freopen((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]),
|
|
getFILE(GVTOP(Args[2]))));
|
|
}
|
|
|
|
// int fflush(FILE *stream);
|
|
GenericValue lle_X_fflush(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
GenericValue GV;
|
|
GV.IntVal = fflush(getFILE(GVTOP(Args[0])));
|
|
return GV;
|
|
}
|
|
|
|
// int getc(FILE *stream);
|
|
GenericValue lle_X_getc(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
GenericValue GV;
|
|
GV.IntVal = getc(getFILE(GVTOP(Args[0])));
|
|
return GV;
|
|
}
|
|
|
|
// int _IO_getc(FILE *stream);
|
|
GenericValue lle_X__IO_getc(FunctionType *F, const vector<GenericValue> &Args) {
|
|
return lle_X_getc(F, Args);
|
|
}
|
|
|
|
// int fputc(int C, FILE *stream);
|
|
GenericValue lle_X_fputc(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 2);
|
|
GenericValue GV;
|
|
GV.IntVal = fputc(Args[0].IntVal, getFILE(GVTOP(Args[1])));
|
|
return GV;
|
|
}
|
|
|
|
// int ungetc(int C, FILE *stream);
|
|
GenericValue lle_X_ungetc(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 2);
|
|
GenericValue GV;
|
|
GV.IntVal = ungetc(Args[0].IntVal, getFILE(GVTOP(Args[1])));
|
|
return GV;
|
|
}
|
|
|
|
// int fprintf(FILE *,sbyte *, ...) - a very rough implementation to make output
|
|
// useful.
|
|
GenericValue lle_X_fprintf(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() >= 2);
|
|
char Buffer[10000];
|
|
vector<GenericValue> NewArgs;
|
|
NewArgs.push_back(PTOGV(Buffer));
|
|
NewArgs.insert(NewArgs.end(), Args.begin()+1, Args.end());
|
|
GenericValue GV = lle_X_sprintf(M, NewArgs);
|
|
|
|
fputs(Buffer, getFILE(GVTOP(Args[0])));
|
|
return GV;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// LLVM Intrinsic Functions...
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// void llvm.va_start(<va_list> *) - Implement the va_start operation...
|
|
GenericValue llvm_va_start(FunctionType *F, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
GenericValue *VAListP = (GenericValue *)GVTOP(Args[0]);
|
|
GenericValue Val;
|
|
Val.UIntVal = 0; // Start at the first '...' argument...
|
|
TheInterpreter->StoreValueToMemory(Val, VAListP, Type::UIntTy);
|
|
return GenericValue();
|
|
}
|
|
|
|
// void llvm.va_end(<va_list> *) - Implement the va_end operation...
|
|
GenericValue llvm_va_end(FunctionType *F, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
return GenericValue(); // Noop!
|
|
}
|
|
|
|
// void llvm.va_copy(<va_list> *, <va_list>) - Implement the va_copy
|
|
// operation...
|
|
GenericValue llvm_va_copy(FunctionType *F, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 2);
|
|
GenericValue *DestVAList = (GenericValue*)GVTOP(Args[0]);
|
|
TheInterpreter->StoreValueToMemory(Args[1], DestVAList, Type::UIntTy);
|
|
return GenericValue();
|
|
}
|
|
|
|
} // End extern "C"
|
|
|
|
|
|
void Interpreter::initializeExternalFunctions() {
|
|
FuncNames["lle_Vb_putchar"] = lle_Vb_putchar;
|
|
FuncNames["lle_ii_putchar"] = lle_ii_putchar;
|
|
FuncNames["lle_VB_putchar"] = lle_VB_putchar;
|
|
FuncNames["lle_X_exit"] = lle_X_exit;
|
|
FuncNames["lle_X_abort"] = lle_X_abort;
|
|
FuncNames["lle_X_malloc"] = lle_X_malloc;
|
|
FuncNames["lle_X_calloc"] = lle_X_calloc;
|
|
FuncNames["lle_X_free"] = lle_X_free;
|
|
FuncNames["lle_X_atoi"] = lle_X_atoi;
|
|
FuncNames["lle_X_pow"] = lle_X_pow;
|
|
FuncNames["lle_X_exp"] = lle_X_exp;
|
|
FuncNames["lle_X_log"] = lle_X_log;
|
|
FuncNames["lle_X_floor"] = lle_X_floor;
|
|
FuncNames["lle_X_srand"] = lle_X_srand;
|
|
FuncNames["lle_X_drand48"] = lle_X_drand48;
|
|
FuncNames["lle_X_srand48"] = lle_X_srand48;
|
|
FuncNames["lle_X_lrand48"] = lle_X_lrand48;
|
|
FuncNames["lle_X_sqrt"] = lle_X_sqrt;
|
|
FuncNames["lle_X_puts"] = lle_X_puts;
|
|
FuncNames["lle_X_printf"] = lle_X_printf;
|
|
FuncNames["lle_X_sprintf"] = lle_X_sprintf;
|
|
FuncNames["lle_X_sscanf"] = lle_X_sscanf;
|
|
FuncNames["lle_X_scanf"] = lle_X_scanf;
|
|
FuncNames["lle_i_clock"] = lle_i_clock;
|
|
|
|
FuncNames["lle_X_strcmp"] = lle_X_strcmp;
|
|
FuncNames["lle_X_strcat"] = lle_X_strcat;
|
|
FuncNames["lle_X_strcpy"] = lle_X_strcpy;
|
|
FuncNames["lle_X_strlen"] = lle_X_strlen;
|
|
FuncNames["lle_X___strdup"] = lle_X___strdup;
|
|
FuncNames["lle_X_memset"] = lle_X_memset;
|
|
FuncNames["lle_X_memcpy"] = lle_X_memcpy;
|
|
|
|
FuncNames["lle_X_fopen"] = lle_X_fopen;
|
|
FuncNames["lle_X_fclose"] = lle_X_fclose;
|
|
FuncNames["lle_X_feof"] = lle_X_feof;
|
|
FuncNames["lle_X_fread"] = lle_X_fread;
|
|
FuncNames["lle_X_fwrite"] = lle_X_fwrite;
|
|
FuncNames["lle_X_fgets"] = lle_X_fgets;
|
|
FuncNames["lle_X_fflush"] = lle_X_fflush;
|
|
FuncNames["lle_X_fgetc"] = lle_X_getc;
|
|
FuncNames["lle_X_getc"] = lle_X_getc;
|
|
FuncNames["lle_X__IO_getc"] = lle_X__IO_getc;
|
|
FuncNames["lle_X_fputc"] = lle_X_fputc;
|
|
FuncNames["lle_X_ungetc"] = lle_X_ungetc;
|
|
FuncNames["lle_X_fprintf"] = lle_X_fprintf;
|
|
FuncNames["lle_X_freopen"] = lle_X_freopen;
|
|
|
|
FuncNames["lle_X_llvm.va_start"]= llvm_va_start;
|
|
FuncNames["lle_X_llvm.va_end"] = llvm_va_end;
|
|
FuncNames["lle_X_llvm.va_copy"] = llvm_va_copy;
|
|
}
|