mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-20 11:29:24 +00:00
2fbfdcffd3
class. The Method class is obsolete (renamed) and all references to it are being converted over to Function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2144 91177308-0d34-0410-b5e6-96231b3b80d8
507 lines
17 KiB
C++
507 lines
17 KiB
C++
//===-- ExternalFunctions.cpp - Implement External Functions --------------===//
|
|
//
|
|
// This file contains both code to deal with invoking "external" functions, but
|
|
// also contains code that implements "exported" external functions.
|
|
//
|
|
// External functions in LLI are implemented by dlopen'ing the lli executable
|
|
// and using dlsym to look op the functions that we want to invoke. If a
|
|
// function is found, then the arguments are mangled and passed in to the
|
|
// function call.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Interpreter.h"
|
|
#include "llvm/DerivedTypes.h"
|
|
#include <map>
|
|
#include <dlfcn.h>
|
|
#include <iostream>
|
|
#include <link.h>
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
using std::vector;
|
|
using std::cout;
|
|
|
|
typedef GenericValue (*ExFunc)(FunctionType *, const vector<GenericValue> &);
|
|
static std::map<const Function *, ExFunc> Functions;
|
|
static std::map<std::string, ExFunc> FuncNames;
|
|
|
|
static Interpreter *TheInterpreter;
|
|
|
|
// getCurrentExecutablePath() - Return the directory that the lli executable
|
|
// lives in.
|
|
//
|
|
std::string Interpreter::getCurrentExecutablePath() const {
|
|
Dl_info Info;
|
|
if (dladdr(&TheInterpreter, &Info) == 0) return "";
|
|
|
|
std::string LinkAddr(Info.dli_fname);
|
|
unsigned SlashPos = LinkAddr.rfind('/');
|
|
if (SlashPos != std::string::npos)
|
|
LinkAddr.resize(SlashPos); // Trim the executable name off...
|
|
|
|
return LinkAddr;
|
|
}
|
|
|
|
|
|
static char getTypeID(const Type *Ty) {
|
|
switch (Ty->getPrimitiveID()) {
|
|
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::FloatTyID: return 'F';
|
|
case Type::DoubleTyID: return 'D';
|
|
case Type::PointerTyID: return 'P';
|
|
case Type::FunctionTyID: return 'M';
|
|
case Type::StructTyID: return 'T';
|
|
case Type::ArrayTyID: return 'A';
|
|
case Type::OpaqueTyID: return 'O';
|
|
default: return 'U';
|
|
}
|
|
}
|
|
|
|
static ExFunc lookupFunction(const Function *M) {
|
|
// Function not found, look it up... start by figuring out what the
|
|
// composite function name should be.
|
|
std::string ExtName = "lle_";
|
|
const FunctionType *MT = M->getFunctionType();
|
|
for (unsigned i = 0; const Type *Ty = MT->getContainedType(i); ++i)
|
|
ExtName += getTypeID(Ty);
|
|
ExtName += "_" + M->getName();
|
|
|
|
//cout << "Tried: '" << ExtName << "'\n";
|
|
ExFunc FnPtr = FuncNames[ExtName];
|
|
if (FnPtr == 0)
|
|
FnPtr = (ExFunc)dlsym(RTLD_DEFAULT, ExtName.c_str());
|
|
if (FnPtr == 0)
|
|
FnPtr = FuncNames["lle_X_"+M->getName()];
|
|
if (FnPtr == 0) // Try calling a generic function... if it exists...
|
|
FnPtr = (ExFunc)dlsym(RTLD_DEFAULT, ("lle_X_"+M->getName()).c_str());
|
|
if (FnPtr != 0)
|
|
Functions.insert(std::make_pair(M, FnPtr)); // Cache for later
|
|
return FnPtr;
|
|
}
|
|
|
|
GenericValue Interpreter::callExternalMethod(Function *M,
|
|
const vector<GenericValue> &ArgVals) {
|
|
TheInterpreter = this;
|
|
|
|
// Do a lookup to see if the function is in our cache... this should just be a
|
|
// defered annotation!
|
|
std::map<const Function *, ExFunc>::iterator FI = Functions.find(M);
|
|
ExFunc Fn = (FI == Functions.end()) ? lookupFunction(M) : FI->second;
|
|
if (Fn == 0) {
|
|
cout << "Tried to execute an unknown external function: "
|
|
<< M->getType()->getDescription() << " " << M->getName() << "\n";
|
|
return GenericValue();
|
|
}
|
|
|
|
// TODO: FIXME when types are not const!
|
|
GenericValue Result = Fn(const_cast<FunctionType*>(M->getFunctionType()),
|
|
ArgVals);
|
|
return Result;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Functions "exported" to the running application...
|
|
//
|
|
extern "C" { // Don't add C++ manglings to llvm mangling :)
|
|
|
|
// Implement void printstr([ubyte {x N}] *)
|
|
GenericValue lle_VP_printstr(FunctionType *M, const vector<GenericValue> &ArgVal){
|
|
assert(ArgVal.size() == 1 && "printstr only takes one argument!");
|
|
cout << (char*)ArgVal[0].PointerVal;
|
|
return GenericValue();
|
|
}
|
|
|
|
// Implement 'void print(X)' for every type...
|
|
GenericValue lle_X_print(FunctionType *M, const vector<GenericValue> &ArgVals) {
|
|
assert(ArgVals.size() == 1 && "generic print only takes one argument!");
|
|
|
|
Interpreter::print(M->getParamTypes()[0], ArgVals[0]);
|
|
return GenericValue();
|
|
}
|
|
|
|
// Implement 'void printVal(X)' for every type...
|
|
GenericValue lle_X_printVal(FunctionType *M, const vector<GenericValue> &ArgVal) {
|
|
assert(ArgVal.size() == 1 && "generic print only takes one argument!");
|
|
|
|
// Specialize print([ubyte {x N} ] *) and print(sbyte *)
|
|
if (PointerType *PTy = dyn_cast<PointerType>(M->getParamTypes()[0].get()))
|
|
if (PTy->getElementType() == Type::SByteTy ||
|
|
isa<ArrayType>(PTy->getElementType())) {
|
|
return lle_VP_printstr(M, ArgVal);
|
|
}
|
|
|
|
Interpreter::printValue(M->getParamTypes()[0], ArgVal[0]);
|
|
return GenericValue();
|
|
}
|
|
|
|
// Implement 'void printString(X)'
|
|
// Argument must be [ubyte {x N} ] * or sbyte *
|
|
GenericValue lle_X_printString(FunctionType *M, const vector<GenericValue> &ArgVal) {
|
|
assert(ArgVal.size() == 1 && "generic print only takes one argument!");
|
|
return lle_VP_printstr(M, ArgVal);
|
|
}
|
|
|
|
// Implement 'void print<TYPE>(X)' for each primitive type or pointer type
|
|
#define PRINT_TYPE_FUNC(TYPENAME,TYPEID) \
|
|
GenericValue lle_X_print##TYPENAME(FunctionType *M,\
|
|
const vector<GenericValue> &ArgVal) {\
|
|
assert(ArgVal.size() == 1 && "generic print only takes one argument!");\
|
|
assert(M->getParamTypes()[0].get()->getPrimitiveID() == Type::TYPEID);\
|
|
Interpreter::printValue(M->getParamTypes()[0], ArgVal[0]);\
|
|
return GenericValue();\
|
|
}
|
|
|
|
PRINT_TYPE_FUNC(SByte, SByteTyID)
|
|
PRINT_TYPE_FUNC(UByte, UByteTyID)
|
|
PRINT_TYPE_FUNC(Short, ShortTyID)
|
|
PRINT_TYPE_FUNC(UShort, UShortTyID)
|
|
PRINT_TYPE_FUNC(Int, IntTyID)
|
|
PRINT_TYPE_FUNC(UInt, UIntTyID)
|
|
PRINT_TYPE_FUNC(Long, LongTyID)
|
|
PRINT_TYPE_FUNC(ULong, ULongTyID)
|
|
PRINT_TYPE_FUNC(Float, FloatTyID)
|
|
PRINT_TYPE_FUNC(Double, DoubleTyID)
|
|
PRINT_TYPE_FUNC(Pointer, PointerTyID)
|
|
|
|
|
|
// void "putchar"(sbyte)
|
|
GenericValue lle_Vb_putchar(FunctionType *M, const vector<GenericValue> &Args) {
|
|
cout << Args[0].SByteVal;
|
|
return GenericValue();
|
|
}
|
|
|
|
// int "putchar"(int)
|
|
GenericValue lle_ii_putchar(FunctionType *M, const vector<GenericValue> &Args) {
|
|
cout << ((char)Args[0].IntVal) << std::flush;
|
|
return Args[0];
|
|
}
|
|
|
|
// void "putchar"(ubyte)
|
|
GenericValue lle_VB_putchar(FunctionType *M, const vector<GenericValue> &Args) {
|
|
cout << Args[0].SByteVal << std::flush;
|
|
return Args[0];
|
|
}
|
|
|
|
// void "__main"()
|
|
GenericValue lle_V___main(FunctionType *M, const vector<GenericValue> &Args) {
|
|
return GenericValue();
|
|
}
|
|
|
|
// void "exit"(int)
|
|
GenericValue lle_X_exit(FunctionType *M, const vector<GenericValue> &Args) {
|
|
TheInterpreter->exitCalled(Args[0]);
|
|
return GenericValue();
|
|
}
|
|
|
|
// void *malloc(uint)
|
|
GenericValue lle_X_malloc(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1 && "Malloc expects one argument!");
|
|
GenericValue GV;
|
|
GV.PointerVal = (PointerTy)malloc(Args[0].UIntVal);
|
|
return GV;
|
|
}
|
|
|
|
// void free(void *)
|
|
GenericValue lle_X_free(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
free((void*)Args[0].PointerVal);
|
|
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*)Args[0].PointerVal);
|
|
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 sprintf(sbyte *, sbyte *, ...) - a very rough implementation to make
|
|
// output useful.
|
|
GenericValue lle_X_sprintf(FunctionType *M, const vector<GenericValue> &Args) {
|
|
char *OutputBuffer = (char *)Args[0].PointerVal;
|
|
const char *FmtStr = (const char *)Args[1].PointerVal;
|
|
unsigned ArgNo = 2;
|
|
|
|
// printf should return # chars printed. This is completely incorrect, but
|
|
// close enough for now.
|
|
GenericValue GV; GV.IntVal = strlen(FmtStr);
|
|
while (1) {
|
|
switch (*FmtStr) {
|
|
case 0: return GV; // Null terminator...
|
|
default: // Normal nonspecial character
|
|
sprintf(OutputBuffer++, "%c", *FmtStr++);
|
|
break;
|
|
case '\\': { // Handle escape codes
|
|
sprintf(OutputBuffer, "%c%c", *FmtStr, *(FmtStr+1));
|
|
FmtStr += 2; OutputBuffer += 2;
|
|
break;
|
|
}
|
|
case '%': { // Handle format specifiers
|
|
char FmtBuf[100] = "", Buffer[1000] = "";
|
|
char *FB = FmtBuf;
|
|
*FB++ = *FmtStr++;
|
|
char Last = *FB++ = *FmtStr++;
|
|
unsigned HowLong = 0;
|
|
while (Last != 'c' && Last != 'd' && Last != 'i' && Last != 'u' &&
|
|
Last != 'o' && Last != 'x' && Last != 'X' && Last != 'e' &&
|
|
Last != 'E' && Last != 'g' && Last != 'G' && Last != 'f' &&
|
|
Last != 'p' && Last != 's' && Last != '%') {
|
|
if (Last == 'l' || Last == 'L') HowLong++; // Keep track of l's
|
|
Last = *FB++ = *FmtStr++;
|
|
}
|
|
*FB = 0;
|
|
|
|
switch (Last) {
|
|
case '%':
|
|
sprintf(Buffer, FmtBuf); break;
|
|
case 'c':
|
|
sprintf(Buffer, FmtBuf, Args[ArgNo++].SByteVal); break;
|
|
case 'd': case 'i':
|
|
case 'u': case 'o':
|
|
case 'x': case 'X':
|
|
if (HowLong == 2)
|
|
sprintf(Buffer, FmtBuf, Args[ArgNo++].ULongVal);
|
|
else
|
|
sprintf(Buffer, FmtBuf, Args[ArgNo++].IntVal); break;
|
|
case 'e': case 'E': case 'g': case 'G': case 'f':
|
|
sprintf(Buffer, FmtBuf, Args[ArgNo++].DoubleVal); break;
|
|
case 'p':
|
|
sprintf(Buffer, FmtBuf, (void*)Args[ArgNo++].PointerVal); break;
|
|
case 's':
|
|
sprintf(Buffer, FmtBuf, (char*)Args[ArgNo++].PointerVal); break;
|
|
default: cout << "<unknown printf code '" << *FmtStr << "'!>";
|
|
ArgNo++; break;
|
|
}
|
|
strcpy(OutputBuffer, Buffer);
|
|
OutputBuffer += strlen(Buffer);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// int printf(sbyte *, ...) - a very rough implementation to make output useful.
|
|
GenericValue lle_X_printf(FunctionType *M, const vector<GenericValue> &Args) {
|
|
char Buffer[10000];
|
|
vector<GenericValue> NewArgs;
|
|
GenericValue GV; GV.PointerVal = (PointerTy)Buffer;
|
|
NewArgs.push_back(GV);
|
|
NewArgs.insert(NewArgs.end(), Args.begin(), Args.end());
|
|
GV = lle_X_sprintf(M, NewArgs);
|
|
cout << Buffer;
|
|
return GV;
|
|
}
|
|
|
|
// int sscanf(const char *format, ...);
|
|
GenericValue lle_X_sscanf(FunctionType *M, const vector<GenericValue> &args) {
|
|
assert(args.size() < 10 && "Only handle up to 10 args to sscanf right now!");
|
|
|
|
const char *Args[10];
|
|
for (unsigned i = 0; i < args.size(); ++i)
|
|
Args[i] = (const char*)args[i].PointerVal;
|
|
|
|
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]);
|
|
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;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// IO Functions...
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// FILE *fopen(const char *filename, const char *mode);
|
|
GenericValue lle_X_fopen(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 2);
|
|
GenericValue GV;
|
|
|
|
GV.PointerVal = (PointerTy)fopen((const char *)Args[0].PointerVal,
|
|
(const char *)Args[1].PointerVal);
|
|
return GV;
|
|
}
|
|
|
|
// int fclose(FILE *F);
|
|
GenericValue lle_X_fclose(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
GenericValue GV;
|
|
|
|
GV.IntVal = fclose((FILE *)Args[0].PointerVal);
|
|
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*)Args[0].PointerVal, Args[1].UIntVal,
|
|
Args[2].UIntVal, (FILE*)Args[3].PointerVal);
|
|
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*)Args[0].PointerVal, Args[1].UIntVal,
|
|
Args[2].UIntVal, (FILE*)Args[3].PointerVal);
|
|
return GV;
|
|
}
|
|
|
|
// char *fgets(char *s, int n, FILE *stream);
|
|
GenericValue lle_X_fgets(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 3);
|
|
GenericValue GV;
|
|
|
|
GV.PointerVal = (PointerTy)fgets((char*)Args[0].PointerVal, Args[1].IntVal,
|
|
(FILE*)Args[2].PointerVal);
|
|
return GV;
|
|
}
|
|
|
|
// int fflush(FILE *stream);
|
|
GenericValue lle_X_fflush(FunctionType *M, const vector<GenericValue> &Args) {
|
|
assert(Args.size() == 1);
|
|
GenericValue GV;
|
|
|
|
GV.IntVal = fflush((FILE*)Args[0].PointerVal);
|
|
return GV;
|
|
}
|
|
|
|
} // End extern "C"
|
|
|
|
|
|
void Interpreter::initializeExternalMethods() {
|
|
FuncNames["lle_VP_printstr"] = lle_VP_printstr;
|
|
FuncNames["lle_X_print"] = lle_X_print;
|
|
FuncNames["lle_X_printVal"] = lle_X_printVal;
|
|
FuncNames["lle_X_printString"] = lle_X_printString;
|
|
FuncNames["lle_X_printUByte"] = lle_X_printUByte;
|
|
FuncNames["lle_X_printSByte"] = lle_X_printSByte;
|
|
FuncNames["lle_X_printUShort"] = lle_X_printUShort;
|
|
FuncNames["lle_X_printShort"] = lle_X_printShort;
|
|
FuncNames["lle_X_printInt"] = lle_X_printInt;
|
|
FuncNames["lle_X_printUInt"] = lle_X_printUInt;
|
|
FuncNames["lle_X_printLong"] = lle_X_printLong;
|
|
FuncNames["lle_X_printULong"] = lle_X_printULong;
|
|
FuncNames["lle_X_printFloat"] = lle_X_printFloat;
|
|
FuncNames["lle_X_printDouble"] = lle_X_printDouble;
|
|
FuncNames["lle_X_printPointer"] = lle_X_printPointer;
|
|
FuncNames["lle_Vb_putchar"] = lle_Vb_putchar;
|
|
FuncNames["lle_ii_putchar"] = lle_ii_putchar;
|
|
FuncNames["lle_VB_putchar"] = lle_VB_putchar;
|
|
FuncNames["lle_V___main"] = lle_V___main;
|
|
FuncNames["lle_X_exit"] = lle_X_exit;
|
|
FuncNames["lle_X_malloc"] = lle_X_malloc;
|
|
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_printf"] = lle_X_printf;
|
|
FuncNames["lle_X_sprintf"] = lle_X_sprintf;
|
|
FuncNames["lle_X_sscanf"] = lle_X_sscanf;
|
|
FuncNames["lle_i_clock"] = lle_i_clock;
|
|
FuncNames["lle_X_fopen"] = lle_X_fopen;
|
|
FuncNames["lle_X_fclose"] = lle_X_fclose;
|
|
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;
|
|
}
|