diff options
| -rw-r--r-- | Makefile.config.in | 3 | ||||
| -rw-r--r-- | autoconf/configure.ac | 15 | ||||
| -rw-r--r-- | lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp | 708 |
3 files changed, 227 insertions, 499 deletions
diff --git a/Makefile.config.in b/Makefile.config.in index 90d1a13132..96dab45611 100644 --- a/Makefile.config.in +++ b/Makefile.config.in @@ -286,3 +286,6 @@ endif # Location of the plugin header file for gold. BINUTILS_INCDIR := @BINUTILS_INCDIR@ + +# Can we use libFFI for the interpreter? +HAVE_FFI := @HAVE_FFI@ diff --git a/autoconf/configure.ac b/autoconf/configure.ac index 680cc1ddd9..83d54681ac 100644 --- a/autoconf/configure.ac +++ b/autoconf/configure.ac @@ -735,6 +735,10 @@ AC_SEARCH_LIBS(dlopen,dl,AC_DEFINE([HAVE_DLOPEN],[1], [Define if dlopen() is available on this platform.]), AC_MSG_WARN([dlopen() not found - disabling plugin support])) +dnl libffi is optional; used to call external functions from the interpreter +AC_CHECK_LIB(ffi,ffi_call,[have_libffi=1], + AC_MSG_WARN([libffi not found - disabling external calls from interpreter])) + dnl mallinfo is optional; the code can compile (minus features) without it AC_SEARCH_LIBS(mallinfo,malloc,AC_DEFINE([HAVE_MALLINFO],[1], [Define if mallinfo() is available on this platform.])) @@ -791,12 +795,17 @@ AC_CHECK_HEADERS([sys/mman.h sys/param.h sys/resource.h sys/time.h]) AC_CHECK_HEADERS([sys/types.h malloc/malloc.h mach/mach.h]) if test "$ENABLE_THREADS" -eq 1 ; then AC_CHECK_HEADERS(pthread.h, - AC_SUBST(HAVE_PTHREAD, 1), - AC_SUBST(HAVE_PTHREAD, 0)) + AC_SUBST(HAVE_PTHREAD, 1), + AC_SUBST(HAVE_PTHREAD, 0)) else AC_SUBST(HAVE_PTHREAD, 0) fi +dnl Once we know we have libffi, try to find ffi.h. +if test -n "$have_libffi" ; then + AC_CHECK_HEADERS([ffi.h ffi/ffi.h], [AC_SUBST(HAVE_FFI, 1)]) +fi + dnl===-----------------------------------------------------------------------=== dnl=== dnl=== SECTION 7: Check for types and structures @@ -954,7 +963,7 @@ AC_DEFINE_UNQUOTED(LLVM_MANDIR, "$LLVM_MANDIR", AC_DEFINE_UNQUOTED(LLVM_CONFIGTIME, "$LLVM_CONFIGTIME", [Time at which LLVM was configured]) AC_DEFINE_UNQUOTED(LLVM_HOSTTRIPLE, "$host", - [Host triple we were built on]) + [Host triple we were built on]) # Determine which bindings to build. if test "$BINDINGS_TO_BUILD" = auto ; then diff --git a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp index 66a26cff3c..36de08358a 100644 --- a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp +++ b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp @@ -10,18 +10,19 @@ // This file contains both code to deal with invoking "external" functions, but // also contains code that implements "exported" external functions. // -// External functions in the interpreter are implemented by -// using the system's dynamic loader to look up the address of the function -// we want to invoke. If a function is found, then one of the -// many lle_* wrapper functions in this file will translate its arguments from -// GenericValues to the types the function is actually expecting, before the -// function is called. +// There are currently two mechanisms for handling external functions in the +// Interpreter. The first is to implement lle_* wrapper functions that are +// specific to well-known library functions which manually translate the +// arguments from GenericValues and make the call. If such a wrapper does +// not exist, and libffi is available, then the Interpreter will attempt to +// invoke the function using libffi, after finding its address. // //===----------------------------------------------------------------------===// #include "Interpreter.h" #include "llvm/DerivedTypes.h" #include "llvm/Module.h" +#include "llvm/Config/config.h" // Detect libffi #include "llvm/Support/Streams.h" #include "llvm/System/DynamicLibrary.h" #include "llvm/Target/TargetData.h" @@ -32,18 +33,28 @@ #include <cmath> #include <cstring> -#ifdef __linux__ -#include <cxxabi.h> +#ifdef HAVE_FFI +#ifdef HAVE_FFI_H +#include <ffi.h> +#elif HAVE_FFI_FFI_H +#include <ffi/ffi.h> +#else +#error "Not sure where configure found ffi.h!" +#endif #endif - -using std::vector; using namespace llvm; -typedef GenericValue (*ExFunc)(FunctionType *, const vector<GenericValue> &); -static ManagedStatic<std::map<const Function *, ExFunc> > Functions; +typedef GenericValue (*ExFunc)(const FunctionType *, + const std::vector<GenericValue> &); +static ManagedStatic<std::map<const Function *, ExFunc> > ExportedFunctions; static std::map<std::string, ExFunc> FuncNames; +#ifdef HAVE_FFI +typedef void (*RawFunc)(void); +static ManagedStatic<std::map<const Function *, RawFunc> > RawFunctions; +#endif + static Interpreter *TheInterpreter; static char getTypeID(const Type *Ty) { @@ -89,34 +100,181 @@ static ExFunc lookupFunction(const Function *F) { if (FnPtr == 0) // Try calling a generic function... if it exists... FnPtr = (ExFunc)(intptr_t)sys::DynamicLibrary::SearchForAddressOfSymbol( ("lle_X_"+F->getName()).c_str()); - if (FnPtr == 0) - FnPtr = (ExFunc)(intptr_t) - sys::DynamicLibrary::SearchForAddressOfSymbol(F->getName()); if (FnPtr != 0) - Functions->insert(std::make_pair(F, FnPtr)); // Cache for later + ExportedFunctions->insert(std::make_pair(F, FnPtr)); // Cache for later return FnPtr; } +#ifdef HAVE_FFI +static ffi_type *ffiTypeFor(const Type *Ty) { + switch (Ty->getTypeID()) { + case Type::VoidTyID: return &ffi_type_void; + case Type::IntegerTyID: + switch (cast<IntegerType>(Ty)->getBitWidth()) { + case 8: return &ffi_type_sint8; + case 16: return &ffi_type_sint16; + case 32: return &ffi_type_sint32; + case 64: return &ffi_type_sint64; + } + case Type::FloatTyID: return &ffi_type_float; + case Type::DoubleTyID: return &ffi_type_double; + case Type::PointerTyID: return &ffi_type_pointer; + default: break; + } + // TODO: Support other types such as StructTyID, ArrayTyID, OpaqueTyID, etc. + cerr << "Type could not be mapped for use with libffi.\n"; + abort(); + return NULL; +} + +static void *ffiValueFor(const Type *Ty, const GenericValue &AV, + void *ArgDataPtr) { + switch (Ty->getTypeID()) { + case Type::IntegerTyID: + switch (cast<IntegerType>(Ty)->getBitWidth()) { + case 8: { + int8_t *I8Ptr = (int8_t *) ArgDataPtr; + *I8Ptr = (int8_t) AV.IntVal.getZExtValue(); + return ArgDataPtr; + } + case 16: { + int16_t *I16Ptr = (int16_t *) ArgDataPtr; + *I16Ptr = (int16_t) AV.IntVal.getZExtValue(); + return ArgDataPtr; + } + case 32: { + int32_t *I32Ptr = (int32_t *) ArgDataPtr; + *I32Ptr = (int32_t) AV.IntVal.getZExtValue(); + return ArgDataPtr; + } + case 64: { + int64_t *I64Ptr = (int64_t *) ArgDataPtr; + *I64Ptr = (int64_t) AV.IntVal.getZExtValue(); + return ArgDataPtr; + } + } + case Type::FloatTyID: { + float *FloatPtr = (float *) ArgDataPtr; + *FloatPtr = AV.DoubleVal; + return ArgDataPtr; + } + case Type::DoubleTyID: { + double *DoublePtr = (double *) ArgDataPtr; + *DoublePtr = AV.DoubleVal; + return ArgDataPtr; + } + case Type::PointerTyID: { + void **PtrPtr = (void **) ArgDataPtr; + *PtrPtr = GVTOP(AV); + return ArgDataPtr; + } + default: break; + } + // TODO: Support other types such as StructTyID, ArrayTyID, OpaqueTyID, etc. + cerr << "Type value could not be mapped for use with libffi.\n"; + abort(); + return NULL; +} + +static bool ffiInvoke(RawFunc Fn, Function *F, + const std::vector<GenericValue> &ArgVals, + const TargetData *TD, GenericValue &Result) { + ffi_cif cif; + const FunctionType *FTy = F->getFunctionType(); + const unsigned NumArgs = F->arg_size(); + + // TODO: We don't have type information about the remaining arguments, because + // this information is never passed into ExecutionEngine::runFunction(). + if (ArgVals.size() > NumArgs && F->isVarArg()) { + cerr << "Calling external var arg function '" << F->getName() + << "' is not supported by the Interpreter.\n"; + abort(); + } + + unsigned ArgBytes = 0; + + std::vector<ffi_type*> args(NumArgs); + for (Function::const_arg_iterator A = F->arg_begin(), E = F->arg_end(); + A != E; ++A) { + const unsigned ArgNo = A->getArgNo(); + const Type *ArgTy = FTy->getParamType(ArgNo); + args[ArgNo] = ffiTypeFor(ArgTy); + ArgBytes += TD->getTypeStoreSize(ArgTy); + } + + uint8_t *ArgData = (uint8_t*) alloca(ArgBytes); + uint8_t *ArgDataPtr = ArgData; + std::vector<void*> values(NumArgs); + for (Function::const_arg_iterator A = F->arg_begin(), E = F->arg_end(); + A != E; ++A) { + const unsigned ArgNo = A->getArgNo(); + const Type *ArgTy = FTy->getParamType(ArgNo); + values[ArgNo] = ffiValueFor(ArgTy, ArgVals[ArgNo], ArgDataPtr); + ArgDataPtr += TD->getTypeStoreSize(ArgTy); + } + + const Type *RetTy = FTy->getReturnType(); + ffi_type *rtype = ffiTypeFor(RetTy); + + if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, NumArgs, rtype, &args[0]) == FFI_OK) { + void *ret = NULL; + if (RetTy->getTypeID() != Type::VoidTyID) + ret = alloca(TD->getTypeStoreSize(RetTy)); + ffi_call(&cif, Fn, ret, &values[0]); + switch (RetTy->getTypeID()) { + case Type::IntegerTyID: + switch (cast<IntegerType>(RetTy)->getBitWidth()) { + case 8: Result.IntVal = APInt(8 , *(int8_t *) ret); break; + case 16: Result.IntVal = APInt(16, *(int16_t*) ret); break; + case 32: Result.IntVal = APInt(32, *(int32_t*) ret); break; + case 64: Result.IntVal = APInt(64, *(int64_t*) ret); break; + } + break; + case Type::FloatTyID: Result.FloatVal = *(float *) ret; break; + case Type::DoubleTyID: Result.DoubleVal = *(double*) ret; break; + case Type::PointerTyID: Result.PointerVal = *(void **) ret; break; + default: break; + } + return true; + } + + return false; +} +#endif // HAVE_FFI + GenericValue Interpreter::callExternalFunction(Function *F, const std::vector<GenericValue> &ArgVals) { TheInterpreter = this; // Do a lookup to see if the function is in our cache... this should just be a // deferred annotation! - std::map<const Function *, ExFunc>::iterator FI = Functions->find(F); - ExFunc Fn = (FI == Functions->end()) ? lookupFunction(F) : FI->second; - if (Fn == 0) { - cerr << "Tried to execute an unknown external function: " - << F->getType()->getDescription() << " " << F->getName() << "\n"; - if (F->getName() == "__main") - return GenericValue(); - abort(); + std::map<const Function *, ExFunc>::iterator FI = ExportedFunctions->find(F); + if (ExFunc Fn = (FI == ExportedFunctions->end()) ? lookupFunction(F) + : FI->second) + return Fn(F->getFunctionType(), ArgVals); + +#ifdef HAVE_FFI + std::map<const Function *, RawFunc>::iterator RF = RawFunctions->find(F); + RawFunc RawFn; + if (RF == RawFunctions->end()) { + RawFn = (RawFunc)(intptr_t) + sys::DynamicLibrary::SearchForAddressOfSymbol(F->getName()); + if (RawFn != 0) + RawFunctions->insert(std::make_pair(F, RawFn)); // Cache for later + } else { + RawFn = RF->second; } - // TODO: FIXME when types are not const! - GenericValue Result = Fn(const_cast<FunctionType*>(F->getFunctionType()), - ArgVals); - return Result; + GenericValue Result; + if (RawFn != 0 && ffiInvoke(RawFn, F, ArgVals, getTargetData(), Result)) + return Result; +#endif // HAVE_FFI + + cerr << "Tried to execute an unknown external function: " + << F->getType()->getDescription() << " " << F->getName() << "\n"; + if (F->getName() != "__main") + abort(); + return GenericValue(); } @@ -125,24 +283,9 @@ GenericValue Interpreter::callExternalFunction(Function *F, // extern "C" { // Don't add C++ manglings to llvm mangling :) -// void putchar(ubyte) -GenericValue lle_X_putchar(FunctionType *FT, const vector<GenericValue> &Args){ - cout << ((char)Args[0].IntVal.getZExtValue()) << std::flush; - return Args[0]; -} - -// void _IO_putc(int c, FILE* fp) -GenericValue lle_X__IO_putc(FunctionType *FT, const vector<GenericValue> &Args){ -#ifdef __linux__ - _IO_putc((char)Args[0].IntVal.getZExtValue(), (FILE*) Args[1].PointerVal); -#else - assert(0 && "Can't call _IO_putc on this platform"); -#endif - return Args[0]; -} - // void atexit(Function*) -GenericValue lle_X_atexit(FunctionType *FT, const vector<GenericValue> &Args) { +GenericValue lle_X_atexit(const FunctionType *FT, + const std::vector<GenericValue> &Args) { assert(Args.size() == 1); TheInterpreter->addAtExitHandler((Function*)GVTOP(Args[0])); GenericValue GV; @@ -151,163 +294,23 @@ GenericValue lle_X_atexit(FunctionType *FT, const vector<GenericValue> &Args) { } // void exit(int) -GenericValue lle_X_exit(FunctionType *FT, const vector<GenericValue> &Args) { +GenericValue lle_X_exit(const FunctionType *FT, + const std::vector<GenericValue> &Args) { TheInterpreter->exitCalled(Args[0]); return GenericValue(); } // void abort(void) -GenericValue lle_X_abort(FunctionType *FT, const vector<GenericValue> &Args) { +GenericValue lle_X_abort(const FunctionType *FT, + const std::vector<GenericValue> &Args) { raise (SIGABRT); return GenericValue(); } -// void *malloc(uint) -GenericValue lle_X_malloc(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1 && "Malloc expects one argument!"); - assert(isa<PointerType>(FT->getReturnType()) && "malloc must return pointer"); - return PTOGV(malloc(Args[0].IntVal.getZExtValue())); -} - -// void *calloc(uint, uint) -GenericValue lle_X_calloc(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2 && "calloc expects two arguments!"); - assert(isa<PointerType>(FT->getReturnType()) && "calloc must return pointer"); - return PTOGV(calloc(Args[0].IntVal.getZExtValue(), - Args[1].IntVal.getZExtValue())); -} - -// void *calloc(uint, uint) -GenericValue lle_X_realloc(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2 && "calloc expects two arguments!"); - assert(isa<PointerType>(FT->getReturnType()) &&"realloc must return pointer"); - return PTOGV(realloc(GVTOP(Args[0]), Args[1].IntVal.getZExtValue())); -} - -// void free(void *) -GenericValue lle_X_free(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - free(GVTOP(Args[0])); - return GenericValue(); -} - -// int atoi(char *) -GenericValue lle_X_atoi(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.IntVal = APInt(32, atoi((char*)GVTOP(Args[0]))); - return GV; -} - -// double pow(double, double) -GenericValue lle_X_pow(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2); - GenericValue GV; - GV.DoubleVal = pow(Args[0].DoubleVal, Args[1].DoubleVal); - return GV; -} - -// double sin(double) -GenericValue lle_X_sin(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.DoubleVal = sin(Args[0].DoubleVal); - return GV; -} - -// double cos(double) -GenericValue lle_X_cos(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.DoubleVal = cos(Args[0].DoubleVal); - return GV; -} - -// double exp(double) -GenericValue lle_X_exp(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.DoubleVal = exp(Args[0].DoubleVal); - return GV; -} - -// double sqrt(double) -GenericValue lle_X_sqrt(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.DoubleVal = sqrt(Args[0].DoubleVal); - return GV; -} - -// double log(double) -GenericValue lle_X_log(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.DoubleVal = log(Args[0].DoubleVal); - return GV; -} - -// double floor(double) -GenericValue lle_X_floor(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.DoubleVal = floor(Args[0].DoubleVal); - return GV; -} - -#ifdef HAVE_RAND48 - -// double drand48() -GenericValue lle_X_drand48(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.empty()); - GenericValue GV; - GV.DoubleVal = drand48(); - return GV; -} - -// long lrand48() -GenericValue lle_X_lrand48(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.empty()); - GenericValue GV; - GV.IntVal = APInt(32, lrand48()); - return GV; -} - -// void srand48(long) -GenericValue lle_X_srand48(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - srand48(Args[0].IntVal.getZExtValue()); - return GenericValue(); -} - -#endif - -// int rand() -GenericValue lle_X_rand(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.empty()); - GenericValue GV; - GV.IntVal = APInt(32, rand()); - return GV; -} - -// void srand(uint) -GenericValue lle_X_srand(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - srand(Args[0].IntVal.getZExtValue()); - return GenericValue(); -} - -// int puts(const char*) -GenericValue lle_X_puts(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.IntVal = APInt(32, puts((char*)GVTOP(Args[0]))); - return GV; -} - -// int sprintf(sbyte *, sbyte *, ...) - a very rough implementation to make +// int sprintf(char *, const char *, ...) - a very rough implementation to make // output useful. -GenericValue lle_X_sprintf(FunctionType *FT, const vector<GenericValue> &Args) { +GenericValue lle_X_sprintf(const FunctionType *FT, + const std::vector<GenericValue> &Args) { char *OutputBuffer = (char *)GVTOP(Args[0]); const char *FmtStr = (const char *)GVTOP(Args[1]); unsigned ArgNo = 2; @@ -384,10 +387,12 @@ GenericValue lle_X_sprintf(FunctionType *FT, const vector<GenericValue> &Args) { return GV; } -// int printf(sbyte *, ...) - a very rough implementation to make output useful. -GenericValue lle_X_printf(FunctionType *FT, const vector<GenericValue> &Args) { +// int printf(const char *, ...) - a very rough implementation to make output +// useful. +GenericValue lle_X_printf(const FunctionType *FT, + const std::vector<GenericValue> &Args) { char Buffer[10000]; - vector<GenericValue> NewArgs; + std::vector<GenericValue> NewArgs; NewArgs.push_back(PTOGV((void*)&Buffer[0])); NewArgs.insert(NewArgs.end(), Args.begin(), Args.end()); GenericValue GV = lle_X_sprintf(FT, NewArgs); @@ -472,7 +477,8 @@ static void ByteswapSCANFResults(const char *Fmt, void *Arg0, void *Arg1, } // int sscanf(const char *format, ...); -GenericValue lle_X_sscanf(FunctionType *FT, const vector<GenericValue> &args) { +GenericValue lle_X_sscanf(const FunctionType *FT, + const std::vector<GenericValue> &args) { assert(args.size() < 10 && "Only handle up to 10 args to sscanf right now!"); char *Args[10]; @@ -488,7 +494,8 @@ GenericValue lle_X_sscanf(FunctionType *FT, const vector<GenericValue> &args) { } // int scanf(const char *format, ...); -GenericValue lle_X_scanf(FunctionType *FT, const vector<GenericValue> &args) { +GenericValue lle_X_scanf(const FunctionType *FT, + const std::vector<GenericValue> &args) { assert(args.size() < 10 && "Only handle up to 10 args to scanf right now!"); char *Args[10]; @@ -503,324 +510,33 @@ GenericValue lle_X_scanf(FunctionType *FT, const vector<GenericValue> &args) { return GV; } - -// int clock(void) - Profiling implementation -GenericValue lle_i_clock(FunctionType *FT, const vector<GenericValue> &Args) { - extern unsigned int clock(void); - GenericValue GV; - GV.IntVal = APInt(32, clock()); - return GV; -} - - -//===----------------------------------------------------------------------===// -// String Functions... -//===----------------------------------------------------------------------===// - -// int strcmp(const char *S1, const char *S2); -GenericValue lle_X_strcmp(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2); - GenericValue Ret; - Ret.IntVal = APInt(32, strcmp((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]))); - return Ret; -} - -// char *strcat(char *Dest, const char *src); -GenericValue lle_X_strcat(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2); - assert(isa<PointerType>(FT->getReturnType()) &&"strcat must return pointer"); - return PTOGV(strcat((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]))); -} - -// char *strcpy(char *Dest, const char *src); -GenericValue lle_X_strcpy(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2); - assert(isa<PointerType>(FT->getReturnType()) &&"strcpy must return pointer"); - return PTOGV(strcpy((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]))); -} - -static GenericValue size_t_to_GV (size_t n) { - GenericValue Ret; - if (sizeof (size_t) == sizeof (uint64_t)) { - Ret.IntVal = APInt(64, n); - } else { - assert (sizeof (size_t) == sizeof (unsigned int)); - Ret.IntVal = APInt(32, n); - } - return Ret; -} - -static size_t GV_to_size_t (GenericValue GV) { - size_t count; - if (sizeof (size_t) == sizeof (uint64_t)) { - count = (size_t)GV.IntVal.getZExtValue(); - } else { - assert (sizeof (size_t) == sizeof (unsigned int)); - count = (size_t)GV.IntVal.getZExtValue(); - } - return count; -} - -// size_t strlen(const char *src); -GenericValue lle_X_strlen(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - size_t strlenResult = strlen ((char *) GVTOP (Args[0])); - return size_t_to_GV (strlenResult); -} - -// char *strdup(const char *src); -GenericValue lle_X_strdup(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - assert(isa<PointerType>(FT->getReturnType()) && "strdup must return pointer"); - return PTOGV(strdup((char*)GVTOP(Args[0]))); -} - -// char *__strdup(const char *src); -GenericValue lle_X___strdup(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - assert(isa<PointerType>(FT->getReturnType()) &&"_strdup must return pointer"); - return PTOGV(strdup((char*)GVTOP(Args[0]))); -} - -// void *memset(void *S, int C, size_t N) -GenericValue lle_X_memset(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 3); - size_t count = GV_to_size_t (Args[2]); - assert(isa<PointerType>(FT->getReturnType()) && "memset must return pointer"); - return PTOGV(memset(GVTOP(Args[0]), uint32_t(Args[1].IntVal.getZExtValue()), - count)); -} - -// void *memcpy(void *Dest, void *src, size_t Size); -GenericValue lle_X_memcpy(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 3); - assert(isa<PointerType>(FT->getReturnType()) && "memcpy must return pointer"); - size_t count = GV_to_size_t (Args[2]); - return PTOGV(memcpy((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]), count)); -} - -// void *memcpy(void *Dest, void *src, size_t Size); -GenericValue lle_X_memmove(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 3); - assert(isa<PointerType>(FT->getReturnType()) && "memmove must return pointer"); - size_t count = GV_to_size_t (Args[2]); - return PTOGV(memmove((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]), count)); -} - -//===----------------------------------------------------------------------===// -// IO Functions... -//===----------------------------------------------------------------------===// - -// getFILE - Turn a pointer in the host address space into a legit pointer in -// the interpreter address space. This is an identity transformation. -#define getFILE(ptr) ((FILE*)ptr) - -// FILE *fopen(const char *filename, const char *mode); -GenericValue lle_X_fopen(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2); - assert(isa<PointerType>(FT->getReturnType()) && "fopen must return pointer"); - return PTOGV(fopen((const char *)GVTOP(Args[0]), - (const char *)GVTOP(Args[1]))); -} - -// int fclose(FILE *F); -GenericValue lle_X_fclose(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.IntVal = APInt(32, fclose(getFILE(GVTOP(Args[0])))); - return GV; -} - -// int feof(FILE *stream); -GenericValue lle_X_feof(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - - GV.IntVal = APInt(32, 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 *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 4); - size_t result; - - result = fread((void*)GVTOP(Args[0]), GV_to_size_t (Args[1]), - GV_to_size_t (Args[2]), getFILE(GVTOP(Args[3]))); - return size_t_to_GV (result); -} - -// size_t fwrite(const void *ptr, size_t size, size_t nitems, FILE *stream); -GenericValue lle_X_fwrite(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 4); - size_t result; - - result = fwrite((void*)GVTOP(Args[0]), GV_to_size_t (Args[1]), - GV_to_size_t (Args[2]), getFILE(GVTOP(Args[3]))); - return size_t_to_GV (result); -} - -// char *fgets(char *s, int n, FILE *stream); -GenericValue lle_X_fgets(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 3); - return PTOGV(fgets((char*)GVTOP(Args[0]), Args[1].IntVal.getZExtValue(), - getFILE(GVTOP(Args[2])))); -} - -// FILE *freopen(const char *path, const char *mode, FILE *stream); -GenericValue lle_X_freopen(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 3); - assert(isa<PointerType>(FT->getReturnType()) &&"freopen must return pointer"); - return PTOGV(freopen((char*)GVTOP(Args[0]), (char*)GVTOP(Args[1]), - getFILE(GVTOP(Args[2])))); -} - -// int fflush(FILE *stream); -GenericValue lle_X_fflush(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.IntVal = APInt(32, fflush(getFILE(GVTOP(Args[0])))); - return GV; -} - -// int getc(FILE *stream); -GenericValue lle_X_getc(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.IntVal = APInt(32, 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 *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2); - GenericValue GV; - GV.IntVal = APInt(32, fputc(Args[0].IntVal.getZExtValue(), - getFILE(GVTOP(Args[1])))); - return GV; -} - -// int ungetc(int C, FILE *stream); -GenericValue lle_X_ungetc(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 2); - GenericValue GV; - GV.IntVal = APInt(32, ungetc(Args[0].IntVal.getZExtValue(), - getFILE(GVTOP(Args[1])))); - return GV; -} - -// int ferror (FILE *stream); -GenericValue lle_X_ferror(FunctionType *FT, const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; - GV.IntVal = APInt(32, ferror (getFILE(GVTOP(Args[0])))); - return GV; -} - -// int fprintf(FILE *,sbyte *, ...) - a very rough implementation to make output -// useful. -GenericValue lle_X_fprintf(FunctionType *FT, const vector<GenericValue> &Args) { +// int fprintf(FILE *, const char *, ...) - a very rough implementation to make +// output useful. +GenericValue lle_X_fprintf(const FunctionType *FT, + const std::vector<GenericValue> &Args) { assert(Args.size() >= 2); char Buffer[10000]; - vector<GenericValue> NewArgs; + std::vector<GenericValue> NewArgs; NewArgs.push_back(PTOGV(Buffer)); NewArgs.insert(NewArgs.end(), Args.begin()+1, Args.end()); GenericValue GV = lle_X_sprintf(FT, NewArgs); - fputs(Buffer, getFILE(GVTOP(Args[0]))); + fputs(Buffer, (FILE *) GVTOP(Args[0])); return GV; } -// int __cxa_guard_acquire (__guard *g); -GenericValue lle_X___cxa_guard_acquire(FunctionType *FT, - const vector<GenericValue> &Args) { - assert(Args.size() == 1); - GenericValue GV; -#ifdef __linux__ - GV.IntVal = APInt(32, __cxxabiv1::__cxa_guard_acquire ( - (__cxxabiv1::__guard*)GVTOP(Args[0]))); -#else - assert(0 && "Can't call __cxa_guard_acquire on this platform"); -#endif - return GV; -} - -// void __cxa_guard_release (__guard *g); -GenericValue lle_X___cxa_guard_release(FunctionType *FT, - const vector<GenericValue> &Args) { - assert(Args.size() == 1); -#ifdef __linux__ - __cxxabiv1::__cxa_guard_release ((__cxxabiv1::__guard*)GVTOP(Args[0])); -#else - assert(0 && "Can't call __cxa_guard_release on this platform"); -#endif - return GenericValue(); -} - } // End extern "C" void Interpreter::initializeExternalFunctions() { - FuncNames["lle_X_putchar"] = lle_X_putchar; - FuncNames["lle_X__IO_putc"] = lle_X__IO_putc; + FuncNames["lle_X_atexit"] = lle_X_atexit; 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_realloc"] = lle_X_realloc; - FuncNames["lle_X_free"] = lle_X_free; - FuncNames["lle_X_atoi"] = lle_X_atoi; - FuncNames["lle_X_pow"] = lle_X_pow; - FuncNames["lle_X_sin"] = lle_X_sin; - FuncNames["lle_X_cos"] = lle_X_cos; - 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_rand"] = lle_X_rand; -#ifdef HAVE_RAND48 - FuncNames["lle_X_drand48"] = lle_X_drand48; - FuncNames["lle_X_srand48"] = lle_X_srand48; - FuncNames["lle_X_lrand48"] = lle_X_lrand48; -#endif - 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_memmove"] = lle_X_memmove; - - 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___cxa_guard_acquire"] = lle_X___cxa_guard_acquire; - FuncNames["lle_X____cxa_guard_release"] = lle_X___cxa_guard_release; } |