//===-- ExternalFunctions.cpp - Implement External Functions --------------===//
-//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
-//
+//
// 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/SymbolTable.h"
+#include "llvm/Config/config.h" // Detect libffi
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/System/DynamicLibrary.h"
#include "llvm/Target/TargetData.h"
-#include "Support/DynamicLinker.h"
-#include "Config/dlfcn.h"
-#include "Config/link.h"
-#include <cmath>
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/System/Mutex.h"
#include <csignal>
+#include <cstdio>
#include <map>
-using std::vector;
+#include <cmath>
+#include <cstring>
+
+#ifdef HAVE_FFI_CALL
+#ifdef HAVE_FFI_H
+#include <ffi.h>
+#define USE_LIBFFI
+#elif HAVE_FFI_FFI_H
+#include <ffi/ffi.h>
+#define USE_LIBFFI
+#endif
+#endif
+
+using namespace llvm;
-namespace llvm {
+static ManagedStatic<sys::Mutex> FunctionsLock;
-typedef GenericValue (*ExFunc)(FunctionType *, const vector<GenericValue> &);
-static 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 USE_LIBFFI
+typedef void (*RawFunc)();
+static ManagedStatic<std::map<const Function *, RawFunc> > RawFunctions;
+#endif
+
static Interpreter *TheInterpreter;
static char getTypeID(const Type *Ty) {
- switch (Ty->getPrimitiveID()) {
+ switch (Ty->getTypeID()) {
case Type::VoidTyID: return 'V';
- case Type::BoolTyID: return 'o';
- case Type::UByteTyID: return 'B';
- case Type::SByteTyID: return 'b';
- case Type::UShortTyID: return 'S';
- case Type::ShortTyID: return 's';
- case Type::UIntTyID: return 'I';
- case Type::IntTyID: return 'i';
- case Type::ULongTyID: return 'L';
- case Type::LongTyID: return 'l';
+ case Type::IntegerTyID:
+ switch (cast<IntegerType>(Ty)->getBitWidth()) {
+ case 1: return 'o';
+ case 8: return 'B';
+ case 16: return 'S';
+ case 32: return 'I';
+ case 64: return 'L';
+ default: return 'N';
+ }
case Type::FloatTyID: return 'F';
case Type::DoubleTyID: return 'D';
case Type::PointerTyID: return 'P';
- case Type::FunctionTyID: return 'M';
+ case Type::FunctionTyID:return 'M';
case Type::StructTyID: return 'T';
case Type::ArrayTyID: return 'A';
case Type::OpaqueTyID: return 'O';
}
}
+// Try to find address of external function given a Function object.
+// Please note, that interpreter doesn't know how to assemble a
+// real call in general case (this is JIT job), that's why it assumes,
+// that all external functions has the same (and pretty "general") signature.
+// The typical example of such functions are "lle_X_" ones.
static ExFunc lookupFunction(const Function *F) {
// Function not found, look it up... start by figuring out what the
// composite function name should be.
const FunctionType *FT = F->getFunctionType();
for (unsigned i = 0, e = FT->getNumContainedTypes(); i != e; ++i)
ExtName += getTypeID(FT->getContainedType(i));
- ExtName += "_" + F->getName();
+ ExtName + "_" + F->getNameStr();
+ sys::ScopedLock Writer(*FunctionsLock);
ExFunc FnPtr = FuncNames[ExtName];
if (FnPtr == 0)
- FnPtr = (ExFunc)GetAddressOfSymbol(ExtName);
- if (FnPtr == 0)
- FnPtr = FuncNames["lle_X_"+F->getName()];
+ FnPtr = FuncNames["lle_X_" + F->getNameStr()];
if (FnPtr == 0) // Try calling a generic function... if it exists...
- FnPtr = (ExFunc)GetAddressOfSymbol(("lle_X_"+F->getName()).c_str());
+ FnPtr = (ExFunc)(intptr_t)
+ sys::DynamicLibrary::SearchForAddressOfSymbol("lle_X_"+F->getNameStr());
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;
}
-GenericValue Interpreter::callExternalFunction(Function *M,
+#ifdef USE_LIBFFI
+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.
+ llvm_report_error("Type could not be mapped for use with libffi.");
+ 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.FloatVal;
+ 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.
+ llvm_report_error("Type value could not be mapped for use with libffi.");
+ 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()) {
+ llvm_report_error("Calling external var arg function '" + F->getName()
+ + "' is not supported by the Interpreter.");
+ }
+
+ 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);
+ }
+
+ SmallVector<uint8_t, 128> ArgData;
+ ArgData.resize(ArgBytes);
+ uint8_t *ArgDataPtr = ArgData.data();
+ SmallVector<void*, 16> 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) {
+ SmallVector<uint8_t, 128> ret;
+ if (RetTy->getTypeID() != Type::VoidTyID)
+ ret.resize(TD->getTypeStoreSize(RetTy));
+ ffi_call(&cif, Fn, ret.data(), values.data());
+ switch (RetTy->getTypeID()) {
+ case Type::IntegerTyID:
+ switch (cast<IntegerType>(RetTy)->getBitWidth()) {
+ case 8: Result.IntVal = APInt(8 , *(int8_t *) ret.data()); break;
+ case 16: Result.IntVal = APInt(16, *(int16_t*) ret.data()); break;
+ case 32: Result.IntVal = APInt(32, *(int32_t*) ret.data()); break;
+ case 64: Result.IntVal = APInt(64, *(int64_t*) ret.data()); break;
+ }
+ break;
+ case Type::FloatTyID: Result.FloatVal = *(float *) ret.data(); break;
+ case Type::DoubleTyID: Result.DoubleVal = *(double*) ret.data(); break;
+ case Type::PointerTyID: Result.PointerVal = *(void **) ret.data(); break;
+ default: break;
+ }
+ return true;
+ }
+
+ return false;
+}
+#endif // USE_LIBFFI
+
+GenericValue Interpreter::callExternalFunction(Function *F,
const std::vector<GenericValue> &ArgVals) {
TheInterpreter = this;
+ FunctionsLock->acquire();
+
// 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(M);
- ExFunc Fn = (FI == Functions.end()) ? lookupFunction(M) : FI->second;
- if (Fn == 0) {
- std::cout << "Tried to execute an unknown external function: "
- << M->getType()->getDescription() << " " << M->getName() << "\n";
- return GenericValue();
+ std::map<const Function *, ExFunc>::iterator FI = ExportedFunctions->find(F);
+ if (ExFunc Fn = (FI == ExportedFunctions->end()) ? lookupFunction(F)
+ : FI->second) {
+ FunctionsLock->release();
+ return Fn(F->getFunctionType(), ArgVals);
}
- // TODO: FIXME when types are not const!
- GenericValue Result = Fn(const_cast<FunctionType*>(M->getFunctionType()),
- ArgVals);
- return Result;
+#ifdef USE_LIBFFI
+ 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 (!RawnFn)
+ RawFn = (RawFunc)(intptr_t)getPointerToGlobalIfAvailable(F);
+ if (RawFn != 0)
+ RawFunctions->insert(std::make_pair(F, RawFn)); // Cache for later
+ } else {
+ RawFn = RF->second;
+ }
+
+ FunctionsLock->release();
+
+ GenericValue Result;
+ if (RawFn != 0 && ffiInvoke(RawFn, F, ArgVals, getTargetData(), Result))
+ return Result;
+#endif // USE_LIBFFI
+
+ if (F->getName() == "__main")
+ errs() << "Tried to execute an unknown external function: "
+ << F->getType()->getDescription() << " __main\n";
+ else
+ llvm_report_error("Tried to execute an unknown external function: " +
+ F->getType()->getDescription() + " " +F->getName());
+#ifndef USE_LIBFFI
+ errs() << "Recompiling LLVM with --enable-libffi might help.\n";
+#endif
+ return GenericValue();
}
//===----------------------------------------------------------------------===//
// Functions "exported" to the running application...
//
-extern "C" { // Don't add C++ manglings to llvm mangling :)
-// void putchar(sbyte)
-GenericValue lle_Vb_putchar(FunctionType *M, const vector<GenericValue> &Args) {
- std::cout << Args[0].SByteVal;
- return GenericValue();
-}
-
-// int putchar(int)
-GenericValue lle_ii_putchar(FunctionType *M, const vector<GenericValue> &Args) {
- std::cout << ((char)Args[0].IntVal) << std::flush;
- return Args[0];
-}
+// Visual Studio warns about returning GenericValue in extern "C" linkage
+#ifdef _MSC_VER
+ #pragma warning(disable : 4190)
+#endif
-// void putchar(ubyte)
-GenericValue lle_VB_putchar(FunctionType *M, const vector<GenericValue> &Args) {
- std::cout << Args[0].SByteVal << std::flush;
- return Args[0];
-}
+extern "C" { // Don't add C++ manglings to llvm mangling :)
// void atexit(Function*)
-GenericValue lle_X_atexit(FunctionType *M, 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;
}
// void exit(int)
-GenericValue lle_X_exit(FunctionType *M, 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 *M, const vector<GenericValue> &Args) {
+GenericValue lle_X_abort(const FunctionType *FT,
+ const std::vector<GenericValue> &Args) {
+ //FIXME: should we report or raise here?
+ //llvm_report_error("Interpreted program raised SIGABRT");
raise (SIGABRT);
return GenericValue();
}
-// void *malloc(uint)
-GenericValue lle_X_malloc(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 1 && "Malloc expects one argument!");
- return PTOGV(malloc(Args[0].UIntVal));
-}
-
-// void *calloc(uint, uint)
-GenericValue lle_X_calloc(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 2 && "calloc expects two arguments!");
- return PTOGV(calloc(Args[0].UIntVal, Args[1].UIntVal));
-}
-
-// void free(void *)
-GenericValue lle_X_free(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 1);
- free(GVTOP(Args[0]));
- return GenericValue();
-}
-
-// int atoi(char *)
-GenericValue lle_X_atoi(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 1);
- GenericValue GV;
- GV.IntVal = atoi((char*)GVTOP(Args[0]));
- return GV;
-}
-
-// double pow(double, double)
-GenericValue lle_X_pow(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 2);
- GenericValue GV;
- GV.DoubleVal = pow(Args[0].DoubleVal, Args[1].DoubleVal);
- return GV;
-}
-
-// double exp(double)
-GenericValue lle_X_exp(FunctionType *M, 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 *M, 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 *M, 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 *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 1);
- GenericValue GV;
- GV.DoubleVal = floor(Args[0].DoubleVal);
- return GV;
-}
-
-// double drand48()
-GenericValue lle_X_drand48(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 0);
- GenericValue GV;
- GV.DoubleVal = drand48();
- return GV;
-}
-
-// long lrand48()
-GenericValue lle_X_lrand48(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 0);
- GenericValue GV;
- GV.IntVal = lrand48();
- return GV;
-}
-
-// void srand48(long)
-GenericValue lle_X_srand48(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 1);
- srand48(Args[0].IntVal);
- return GenericValue();
-}
-
-// void srand(uint)
-GenericValue lle_X_srand(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 1);
- srand(Args[0].UIntVal);
- return GenericValue();
-}
-
-// int puts(const char*)
-GenericValue lle_X_puts(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 1);
- GenericValue GV;
- GV.IntVal = 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 *M, 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;
// printf should return # chars printed. This is completely incorrect, but
// close enough for now.
- GenericValue GV; GV.IntVal = strlen(FmtStr);
+ GenericValue GV;
+ GV.IntVal = APInt(32, strlen(FmtStr));
while (1) {
switch (*FmtStr) {
case 0: return GV; // Null terminator...
Last = *FB++ = *FmtStr++;
}
*FB = 0;
-
+
switch (Last) {
case '%':
- sprintf(Buffer, FmtBuf); break;
+ memcpy(Buffer, "%", 2); break;
case 'c':
- sprintf(Buffer, FmtBuf, Args[ArgNo++].IntVal); break;
+ sprintf(Buffer, FmtBuf, uint32_t(Args[ArgNo++].IntVal.getZExtValue()));
+ break;
case 'd': case 'i':
case 'u': case 'o':
case 'x': case 'X':
if (HowLong >= 1) {
if (HowLong == 1 &&
- TheInterpreter->getModule().getPointerSize()==Module::Pointer64 &&
- sizeof(long) < sizeof(long long)) {
+ TheInterpreter->getTargetData()->getPointerSizeInBits() == 64 &&
+ sizeof(long) < sizeof(int64_t)) {
// Make sure we use %lld with a 64 bit argument because we might be
// compiling LLI on a 32 bit compiler.
unsigned Size = strlen(FmtBuf);
FmtBuf[Size+1] = 0;
FmtBuf[Size-1] = 'l';
}
- sprintf(Buffer, FmtBuf, Args[ArgNo++].ULongVal);
+ sprintf(Buffer, FmtBuf, Args[ArgNo++].IntVal.getZExtValue());
} else
- sprintf(Buffer, FmtBuf, Args[ArgNo++].IntVal); break;
+ sprintf(Buffer, FmtBuf,uint32_t(Args[ArgNo++].IntVal.getZExtValue()));
+ break;
case 'e': case 'E': case 'g': case 'G': case 'f':
sprintf(Buffer, FmtBuf, Args[ArgNo++].DoubleVal); break;
case 'p':
sprintf(Buffer, FmtBuf, (void*)GVTOP(Args[ArgNo++])); break;
- case 's':
+ case 's':
sprintf(Buffer, FmtBuf, (char*)GVTOP(Args[ArgNo++])); break;
- default: std::cout << "<unknown printf code '" << *FmtStr << "'!>";
+ default:
+ errs() << "<unknown printf code '" << *FmtStr << "'!>";
ArgNo++; break;
}
- strcpy(OutputBuffer, Buffer);
- OutputBuffer += strlen(Buffer);
+ size_t Len = strlen(Buffer);
+ memcpy(OutputBuffer, Buffer, Len + 1);
+ OutputBuffer += Len;
}
break;
}
}
+ return GV;
}
-// int printf(sbyte *, ...) - a very rough implementation to make output useful.
-GenericValue lle_X_printf(FunctionType *M, 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;
- NewArgs.push_back(PTOGV(Buffer));
+ std::vector<GenericValue> NewArgs;
+ NewArgs.push_back(PTOGV((void*)&Buffer[0]));
NewArgs.insert(NewArgs.end(), Args.begin(), Args.end());
- GenericValue GV = lle_X_sprintf(M, NewArgs);
- std::cout << Buffer;
+ GenericValue GV = lle_X_sprintf(FT, NewArgs);
+ outs() << Buffer;
return GV;
}
-static void ByteswapSCANFResults(const char *Fmt, void *Arg0, void *Arg1,
- void *Arg2, void *Arg3, void *Arg4, void *Arg5,
- void *Arg6, void *Arg7, void *Arg8) {
- void *Args[] = { Arg0, Arg1, Arg2, Arg3, Arg4, Arg5, Arg6, Arg7, Arg8, 0 };
-
- // Loop over the format string, munging read values as appropriate (performs
- // byteswaps as necessary).
- unsigned ArgNo = 0;
- while (*Fmt) {
- if (*Fmt++ == '%') {
- // Read any flag characters that may be present...
- bool Suppress = false;
- bool Half = false;
- bool Long = false;
- bool LongLong = false; // long long or long double
-
- while (1) {
- switch (*Fmt++) {
- case '*': Suppress = true; break;
- case 'a': /*Allocate = true;*/ break; // We don't need to track this
- case 'h': Half = true; break;
- case 'l': Long = true; break;
- case 'q':
- case 'L': LongLong = true; break;
- default:
- if (Fmt[-1] > '9' || Fmt[-1] < '0') // Ignore field width specs
- goto Out;
- }
- }
- Out:
-
- // Read the conversion character
- if (!Suppress && Fmt[-1] != '%') { // Nothing to do?
- unsigned Size = 0;
- const Type *Ty = 0;
-
- switch (Fmt[-1]) {
- case 'i': case 'o': case 'u': case 'x': case 'X': case 'n': case 'p':
- case 'd':
- if (Long || LongLong) {
- Size = 8; Ty = Type::ULongTy;
- } else if (Half) {
- Size = 4; Ty = Type::UShortTy;
- } else {
- Size = 4; Ty = Type::UIntTy;
- }
- break;
-
- case 'e': case 'g': case 'E':
- case 'f':
- if (Long || LongLong) {
- Size = 8; Ty = Type::DoubleTy;
- } else {
- Size = 4; Ty = Type::FloatTy;
- }
- break;
-
- case 's': case 'c': case '[': // No byteswap needed
- Size = 1;
- Ty = Type::SByteTy;
- break;
-
- default: break;
- }
-
- if (Size) {
- GenericValue GV;
- void *Arg = Args[ArgNo++];
- memcpy(&GV, Arg, Size);
- TheInterpreter->StoreValueToMemory(GV, (GenericValue*)Arg, Ty);
- }
- }
- }
- }
-}
-
// int sscanf(const char *format, ...);
-GenericValue lle_X_sscanf(FunctionType *M, 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];
Args[i] = (char*)GVTOP(args[i]);
GenericValue GV;
- GV.IntVal = sscanf(Args[0], Args[1], Args[2], Args[3], Args[4],
- Args[5], Args[6], Args[7], Args[8], Args[9]);
- ByteswapSCANFResults(Args[1], Args[2], Args[3], Args[4],
- Args[5], Args[6], Args[7], Args[8], Args[9], 0);
+ GV.IntVal = APInt(32, sscanf(Args[0], Args[1], Args[2], Args[3], Args[4],
+ Args[5], Args[6], Args[7], Args[8], Args[9]));
return GV;
}
// int scanf(const char *format, ...);
-GenericValue lle_X_scanf(FunctionType *M, 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];
Args[i] = (char*)GVTOP(args[i]);
GenericValue GV;
- GV.IntVal = scanf(Args[0], Args[1], Args[2], Args[3], Args[4],
- Args[5], Args[6], Args[7], Args[8], Args[9]);
- ByteswapSCANFResults(Args[0], Args[1], Args[2], Args[3], Args[4],
- Args[5], Args[6], Args[7], Args[8], Args[9]);
- return GV;
-}
-
-
-// int clock(void) - Profiling implementation
-GenericValue lle_i_clock(FunctionType *M, const vector<GenericValue> &Args) {
- extern int clock(void);
- GenericValue GV; GV.IntVal = clock();
- return GV;
-}
-
-
-//===----------------------------------------------------------------------===//
-// String Functions...
-//===----------------------------------------------------------------------===//
-
-// int strcmp(const char *S1, const char *S2);
-GenericValue lle_X_strcmp(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 2);
- GenericValue Ret;
- 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])));
-}
-
-// size_t strlen(const char *src);
-GenericValue lle_X_strlen(FunctionType *M, const vector<GenericValue> &Args) {
- assert(Args.size() == 1);
- size_t strlenResult = strlen ((char *) GVTOP (Args[0]));
- GenericValue Ret;
- if (sizeof (size_t) == sizeof (uint64_t)) {
- Ret.ULongVal = strlenResult;
- } else {
- assert (sizeof (size_t) == sizeof (unsigned int));
- Ret.UIntVal = strlenResult;
- }
- 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])));
-}
-
-// 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])));
+ GV.IntVal = APInt(32, scanf( Args[0], Args[1], Args[2], Args[3], Args[4],
+ Args[5], Args[6], Args[7], Args[8], Args[9]));
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) {
+// 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(M, NewArgs);
+ GenericValue GV = lle_X_sprintf(FT, NewArgs);
- fputs(Buffer, getFILE(GVTOP(Args[0])));
+ fputs(Buffer, (FILE *) GVTOP(Args[0]));
return GV;
}
-//===----------------------------------------------------------------------===//
-// LLVM Intrinsic Functions...
-//===----------------------------------------------------------------------===//
-
-// <va_list> llvm.va_start() - Implement the va_start operation...
-GenericValue llvm_va_start(FunctionType *F, const vector<GenericValue> &Args) {
- assert(Args.size() == 0);
- return TheInterpreter->getFirstVarArg();
-}
-
-// 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!
-}
-
-// <va_list> llvm.va_copy(<va_list>) - Implement the va_copy operation...
-GenericValue llvm_va_copy(FunctionType *F, const vector<GenericValue> &Args) {
- assert(Args.size() == 1);
- return Args[0];
-}
-
} // End extern "C"
+// Done with externals; turn the warning back on
+#ifdef _MSC_VER
+ #pragma warning(default: 4190)
+#endif
+
void Interpreter::initializeExternalFunctions() {
- FuncNames["lle_Vb_putchar"] = lle_Vb_putchar;
- FuncNames["lle_ii_putchar"] = lle_ii_putchar;
- FuncNames["lle_VB_putchar"] = lle_VB_putchar;
+ sys::ScopedLock Writer(*FunctionsLock);
+ 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_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;
}
-
-} // End llvm namespace
projects / oota-llvm.git / blobdiff