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abc_codesynt.cpp
4994 lines (4683 loc) · 169 KB
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abc_codesynt.cpp
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/**************************************************************************
Lightspark, a free flash player implementation
Copyright (C) 2009,2010 Alessandro Pignotti (a.pignotti@sssup.it)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
**************************************************************************/
#include "abc.h"
#include <llvm/Module.h>
#include <llvm/DerivedTypes.h>
#include <llvm/ExecutionEngine/ExecutionEngine.h>
#include <llvm/Constants.h>
#include <llvm/Support/IRBuilder.h>
#include <llvm/Target/TargetData.h>
#include <sstream>
#include "swftypes.h"
#include "compat.h"
#include "exceptions.h"
using namespace std;
using namespace lightspark;
void debug_d(number_t f)
{
LOG(LOG_CALLS, _("debug_d ")<< f);
}
void debug_i(intptr_t i)
{
LOG(LOG_CALLS, _("debug_i ")<< i);
}
opcode_handler ABCVm::opcode_table_args_pointer_2int[]={
{"getMultiname_i",(void*)&ABCContext::s_getMultiname_i}
};
opcode_handler ABCVm::opcode_table_args_pointer_number_int[]={
{"getMultiname_d",(void*)&ABCContext::s_getMultiname_d}
};
opcode_handler ABCVm::opcode_table_args3_pointers[]={
{"setProperty",(void*)&ABCVm::setProperty},
};
typed_opcode_handler ABCVm::opcode_table_uintptr_t[]={
{"bitAnd_oo",(void*)&ABCVm::bitAnd,ARGS_OBJ_OBJ},
{"bitAnd_oi",(void*)&ABCVm::bitAnd_oi,ARGS_OBJ_INT},
{"pushByte",(void*)&ABCVm::pushByte,ARGS_INT},
{"pushShort",(void*)&ABCVm::pushShort,ARGS_INT},
{"decrement_i",(void*)&ABCVm::decrement_i,ARGS_OBJ},
{"increment_i",(void*)&ABCVm::increment_i,ARGS_OBJ},
{"bitNot",(void*)&ABCVm::bitNot,ARGS_OBJ},
{"bitXor",(void*)&ABCVm::bitXor,ARGS_OBJ_OBJ},
{"bitOr",(void*)&ABCVm::bitOr,ARGS_OBJ_OBJ},
{"bitOr_oi",(void*)&ABCVm::bitOr_oi,ARGS_OBJ_INT},
{"lShift",(void*)&ABCVm::lShift,ARGS_OBJ_OBJ},
{"lShift_io",(void*)&ABCVm::lShift_io,ARGS_INT_OBJ},
{"modulo",(void*)&ABCVm::modulo,ARGS_OBJ_OBJ},
{"urShift",(void*)&ABCVm::urShift,ARGS_OBJ_OBJ},
{"rShift",(void*)&ABCVm::rShift,ARGS_OBJ_OBJ},
{"urShift_io",(void*)&ABCVm::urShift_io,ARGS_INT_OBJ},
{"getProperty_i",(void*)&ABCVm::getProperty_i,ARGS_OBJ_OBJ},
{"convert_i",(void*)&ABCVm::convert_i,ARGS_OBJ},
{"convert_u",(void*)&ABCVm::convert_u,ARGS_OBJ},
};
typed_opcode_handler ABCVm::opcode_table_number_t[]={
{"increment",(void*)&ABCVm::increment,ARGS_OBJ},
{"decrement",(void*)&ABCVm::decrement,ARGS_OBJ},
{"multiply",(void*)&ABCVm::multiply,ARGS_OBJ_OBJ},
{"multiply_oi",(void*)&ABCVm::multiply_oi,ARGS_OBJ_INT},
{"divide",(void*)&ABCVm::divide,ARGS_OBJ_OBJ},
{"subtract",(void*)&ABCVm::subtract,ARGS_OBJ_OBJ},
{"subtract_oi",(void*)&ABCVm::subtract_oi,ARGS_OBJ_INT},
{"subtract_io",(void*)&ABCVm::subtract_io,ARGS_INT_OBJ},
{"subtract_do",(void*)&ABCVm::subtract_do,ARGS_NUMBER_OBJ},
{"convert_d",(void*)&ABCVm::convert_d,ARGS_OBJ},
{"negate",(void*)&ABCVm::negate,ARGS_OBJ},
};
typed_opcode_handler ABCVm::opcode_table_void[]={
{"setSlot",(void*)&ABCVm::setSlot,ARGS_OBJ_OBJ_INT},
{"debug_d",(void*)&debug_d,ARGS_NUMBER},
{"debug_i",(void*)&debug_i,ARGS_INT},
{"label",(void*)&ABCVm::label,ARGS_NONE},
{"pop",(void*)&ABCVm::pop,ARGS_NONE},
{"dup",(void*)&ABCVm::dup,ARGS_NONE},
{"swap",(void*)&ABCVm::swap,ARGS_NONE},
{"coerce_a",(void*)&ABCVm::coerce_a,ARGS_NONE},
{"lookupswitch",(void*)&ABCVm::lookupswitch,ARGS_NONE},
{"getLocal",(void*)&ABCVm::getLocal,ARGS_OBJ_INT},
{"getLocal_short",(void*)&ABCVm::getLocal_short,ARGS_INT},
{"getLocal_int",(void*)&ABCVm::getLocal_int,ARGS_INT_INT},
{"setLocal",(void*)&ABCVm::setLocal,ARGS_INT},
{"setLocal_int",(void*)&ABCVm::setLocal_int,ARGS_INT_INT},
{"setLocal_obj",(void*)&ABCVm::setLocal_obj,ARGS_INT_OBJ},
{"pushScope",(void*)&ABCVm::pushScope,ARGS_CONTEXT},
{"pushWith",(void*)&ABCVm::pushWith,ARGS_CONTEXT},
{"throw",(void*)&ABCVm::_throw,ARGS_CONTEXT},
{"popScope",(void*)&ABCVm::popScope,ARGS_CONTEXT},
{"pushDouble",(void*)&ABCVm::pushDouble,ARGS_CONTEXT_INT},
{"pushInt",(void*)&ABCVm::pushInt,ARGS_CONTEXT_INT},
{"pushUInt",(void*)&ABCVm::pushUInt,ARGS_CONTEXT_INT},
{"getSuper",(void*)&ABCVm::getSuper,ARGS_CONTEXT_INT},
{"setSuper",(void*)&ABCVm::setSuper,ARGS_CONTEXT_INT},
{"newObject",(void*)&ABCVm::newObject,ARGS_CONTEXT_INT},
{"getDescendants",(void*)&ABCVm::getDescendants,ARGS_CONTEXT_INT},
{"deleteProperty",(void*)&ABCVm::deleteProperty,ARGS_CONTEXT_INT},
{"call",(void*)&ABCVm::call,ARGS_CONTEXT_INT},
{"coerce",(void*)&ABCVm::coerce,ARGS_CONTEXT_INT},
{"getLex",(void*)&ABCVm::getLex,ARGS_CONTEXT_INT},
{"incLocal_i",(void*)&ABCVm::incLocal_i,ARGS_CONTEXT_INT},
{"construct",(void*)&ABCVm::construct,ARGS_CONTEXT_INT},
{"constructGenericType",(void*)&ABCVm::constructGenericType,ARGS_CONTEXT_INT},
{"constructSuper",(void*)&ABCVm::constructSuper,ARGS_CONTEXT_INT},
{"newArray",(void*)&ABCVm::newArray,ARGS_CONTEXT_INT},
{"newClass",(void*)&ABCVm::newClass,ARGS_CONTEXT_INT},
{"initProperty",(void*)&ABCVm::initProperty,ARGS_CONTEXT_INT},
{"kill",(void*)&ABCVm::kill,ARGS_INT},
{"jump",(void*)&ABCVm::jump,ARGS_INT},
{"callProperty",(void*)&ABCVm::callProperty,ARGS_CONTEXT_INT_INT},
{"callPropVoid",(void*)&ABCVm::callPropVoid,ARGS_CONTEXT_INT_INT},
{"constructProp",(void*)&ABCVm::constructProp,ARGS_CONTEXT_INT_INT},
{"callSuper",(void*)&ABCVm::callSuper,ARGS_CONTEXT_INT_INT},
{"callSuperVoid",(void*)&ABCVm::callSuperVoid,ARGS_CONTEXT_INT_INT},
{"not_impl",(void*)&ABCVm::not_impl,ARGS_INT},
{"incRef",(void*)&ASObject::s_incRef,ARGS_OBJ},
{"decRef",(void*)&ASObject::s_decRef,ARGS_OBJ},
{"decRef_safe",(void*)&ASObject::s_decRef_safe,ARGS_OBJ_OBJ}
};
typed_opcode_handler ABCVm::opcode_table_voidptr[]={
{"add",(void*)&ABCVm::add,ARGS_OBJ_OBJ},
{"add_oi",(void*)&ABCVm::add_oi,ARGS_OBJ_INT},
{"add_od",(void*)&ABCVm::add_od,ARGS_OBJ_NUMBER},
{"nextName",(void*)&ABCVm::nextName,ARGS_OBJ_OBJ},
{"nextValue",(void*)&ABCVm::nextValue,ARGS_OBJ_OBJ},
{"abstract_d",(void*)&abstract_d,ARGS_NUMBER},
{"abstract_i",(void*)&abstract_i,ARGS_INT},
{"abstract_b",(void*)&abstract_b,ARGS_BOOL},
{"pushNaN",(void*)&ABCVm::pushNaN,ARGS_NONE},
{"pushNull",(void*)&ABCVm::pushNull,ARGS_NONE},
{"pushUndefined",(void*)&ABCVm::pushUndefined,ARGS_NONE},
{"getProperty",(void*)&ABCVm::getProperty,ARGS_OBJ_OBJ},
{"asTypelate",(void*)&ABCVm::asTypelate,ARGS_OBJ_OBJ},
{"getGlobalScope",(void*)&ABCVm::getGlobalScope,ARGS_CONTEXT},
{"findPropStrict",(void*)&ABCVm::findPropStrict,ARGS_CONTEXT_INT},
{"findProperty",(void*)&ABCVm::findProperty,ARGS_CONTEXT_INT},
{"getMultiname",(void*)&ABCContext::s_getMultiname,ARGS_OBJ_OBJ_INT},
{"typeOf",(void*)ABCVm::typeOf,ARGS_OBJ},
{"coerce_s",(void*)&ABCVm::coerce_s,ARGS_OBJ},
{"checkfilter",(void*)&ABCVm::checkfilter,ARGS_OBJ},
{"pushString",(void*)&ABCVm::pushString,ARGS_CONTEXT_INT},
{"newFunction",(void*)&ABCVm::newFunction,ARGS_CONTEXT_INT},
{"newCatch",(void*)&ABCVm::newCatch,ARGS_CONTEXT_INT},
{"getScopeObject",(void*)&ABCVm::getScopeObject,ARGS_CONTEXT_INT},
{"getSlot",(void*)&ABCVm::getSlot,ARGS_OBJ_INT}
};
typed_opcode_handler ABCVm::opcode_table_bool_t[]={
{"not",(void*)&ABCVm::_not,ARGS_OBJ},
{"equals",(void*)&ABCVm::equals,ARGS_OBJ_OBJ},
{"strictEquals",(void*)&ABCVm::strictEquals,ARGS_OBJ_OBJ},
{"greaterThan",(void*)&ABCVm::greaterThan,ARGS_OBJ_OBJ},
{"greaterEquals",(void*)&ABCVm::greaterEquals,ARGS_OBJ_OBJ},
{"lessThan",(void*)&ABCVm::lessThan,ARGS_OBJ_OBJ},
{"lessEquals",(void*)&ABCVm::lessEquals,ARGS_OBJ_OBJ},
{"ifEq",(void*)&ABCVm::ifEq,ARGS_OBJ_OBJ},
{"ifNE",(void*)&ABCVm::ifNE,ARGS_OBJ_OBJ},
{"ifNE_oi",(void*)&ABCVm::ifNE_oi,ARGS_OBJ_INT},
{"ifLT",(void*)&ABCVm::ifLT,ARGS_OBJ_OBJ},
{"ifNLT",(void*)&ABCVm::ifNLT,ARGS_OBJ_OBJ},
{"ifLT_io",(void*)&ABCVm::ifLT_io,ARGS_INT_OBJ},
{"ifLT_oi",(void*)&ABCVm::ifLT_oi,ARGS_OBJ_INT},
{"ifGT",(void*)&ABCVm::ifGT,ARGS_OBJ_OBJ},
{"ifNGT",(void*)&ABCVm::ifNGT,ARGS_OBJ_OBJ},
{"ifGE",(void*)&ABCVm::ifGE,ARGS_OBJ_OBJ},
{"ifNGE",(void*)&ABCVm::ifNGE,ARGS_OBJ_OBJ},
{"ifLE",(void*)&ABCVm::ifLE,ARGS_OBJ_OBJ},
{"ifNLE",(void*)&ABCVm::ifNLE,ARGS_OBJ_OBJ},
{"in",(void*)&ABCVm::in,ARGS_OBJ_OBJ},
{"ifStrictNE",(void*)&ABCVm::ifStrictNE,ARGS_OBJ_OBJ},
{"ifStrictEq",(void*)&ABCVm::ifStrictEq,ARGS_OBJ_OBJ},
{"pushTrue",(void*)&ABCVm::pushTrue,ARGS_NONE},
{"pushFalse",(void*)&ABCVm::pushFalse,ARGS_NONE},
{"isTypelate",(void*)&ABCVm::isTypelate,ARGS_OBJ_OBJ},
{"ifTrue",(void*)&ABCVm::ifTrue,ARGS_OBJ},
{"ifFalse",(void*)&ABCVm::ifFalse,ARGS_OBJ},
{"convert_b",(void*)&ABCVm::convert_b,ARGS_OBJ},
{"hasNext2",(void*)ABCVm::hasNext2,ARGS_CONTEXT_INT_INT}
};
void ABCVm::registerFunctions()
{
vector<const llvm::Type*> sig;
llvm::FunctionType* FT=NULL;
const llvm::Type* ptr_type=ex->getTargetData()->getIntPtrType(llvm_context);
const llvm::Type* int_type=ptr_type;
const llvm::Type* voidptr_type=llvm::PointerType::getUnqual(ptr_type);
const llvm::Type* number_type=llvm::Type::getDoubleTy(llvm_context);
const llvm::Type* bool_type=llvm::IntegerType::get(llvm_context,1);
const llvm::Type* void_type=llvm::Type::getVoidTy(llvm_context);
//All the opcodes needs a pointer to the context
std::vector<const llvm::Type*> struct_elems;
struct_elems.push_back(llvm::PointerType::getUnqual(llvm::PointerType::getUnqual(ptr_type)));
struct_elems.push_back(llvm::PointerType::getUnqual(llvm::PointerType::getUnqual(ptr_type)));
struct_elems.push_back(llvm::IntegerType::get(llvm_context,32));
llvm::Type* context_type=llvm::PointerType::getUnqual(llvm::StructType::get(llvm_context,struct_elems,true));
//newActivation needs both method_info and the context
sig.push_back(context_type);
sig.push_back(llvm::PointerType::getUnqual(ptr_type));
FT=llvm::FunctionType::get(llvm::PointerType::getUnqual(ptr_type), sig, false);
llvm::Function* F=llvm::Function::Create(FT,llvm::Function::ExternalLinkage,"newActivation",module);
ex->addGlobalMapping(F,(void*)&ABCVm::newActivation);
//Lazy pushing, no context, (ASObject*, uintptr_t, int)
sig.clear();
sig.push_back(llvm::PointerType::getUnqual(ptr_type));
sig.push_back(int_type);
sig.push_back(int_type);
FT=llvm::FunctionType::get(llvm::PointerType::getUnqual(ptr_type), sig, false);
int elems=sizeof(opcode_table_args_pointer_2int)/sizeof(opcode_handler);
for(int i=0;i<elems;i++)
{
F=llvm::Function::Create(FT,llvm::Function::ExternalLinkage,opcode_table_args_pointer_2int[i].name,module);
ex->addGlobalMapping(F,opcode_table_args_pointer_2int[i].addr);
}
sig.clear();
sig.push_back(llvm::PointerType::getUnqual(ptr_type));
sig.push_back(number_type);
sig.push_back(int_type);
FT=llvm::FunctionType::get(llvm::PointerType::getUnqual(ptr_type), sig, false);
elems=sizeof(opcode_table_args_pointer_number_int)/sizeof(opcode_handler);
for(int i=0;i<elems;i++)
{
F=llvm::Function::Create(FT,llvm::Function::ExternalLinkage,opcode_table_args_pointer_number_int[i].name,module);
ex->addGlobalMapping(F,opcode_table_args_pointer_number_int[i].addr);
}
//End of lazy pushing
//Lazy pushing, no context, (ASObject*, ASObject*, void*)
sig.clear();
sig.push_back(llvm::PointerType::getUnqual(ptr_type));
sig.push_back(llvm::PointerType::getUnqual(ptr_type));
sig.push_back(llvm::PointerType::getUnqual(ptr_type));
FT=llvm::FunctionType::get(void_type, sig, false);
elems=sizeof(opcode_table_args3_pointers)/sizeof(opcode_handler);
for(int i=0;i<elems;i++)
{
F=llvm::Function::Create(FT,llvm::Function::ExternalLinkage,opcode_table_args3_pointers[i].name,module);
ex->addGlobalMapping(F,opcode_table_args3_pointers[i].addr);
}
//Build the concrete interface
sig[0]=int_type;
FT=llvm::FunctionType::get(void_type, sig, false);
F=llvm::Function::Create(FT,llvm::Function::ExternalLinkage,"setProperty_i",module);
ex->addGlobalMapping(F,(void*)&ABCVm::setProperty_i);
register_table(int_type,opcode_table_uintptr_t,sizeof(opcode_table_uintptr_t)/sizeof(typed_opcode_handler));
register_table(number_type,opcode_table_number_t,sizeof(opcode_table_number_t)/sizeof(typed_opcode_handler));
register_table(void_type,opcode_table_void,sizeof(opcode_table_void)/sizeof(typed_opcode_handler));
register_table(voidptr_type,opcode_table_voidptr,sizeof(opcode_table_voidptr)/sizeof(typed_opcode_handler));
register_table(bool_type,opcode_table_bool_t,sizeof(opcode_table_bool_t)/sizeof(typed_opcode_handler));
}
void ABCVm::register_table(const llvm::Type* ret_type,typed_opcode_handler* table, int table_len)
{
const llvm::Type* int_type=ex->getTargetData()->getIntPtrType(llvm_context);
const llvm::Type* voidptr_type=llvm::PointerType::getUnqual(int_type);
const llvm::Type* number_type=llvm::Type::getDoubleTy(llvm_context);
const llvm::Type* bool_type=llvm::IntegerType::get(llvm_context,1);
vector<const llvm::Type*> sig_obj_obj;
sig_obj_obj.push_back(voidptr_type);
sig_obj_obj.push_back(voidptr_type);
vector<const llvm::Type*> sig_obj_int;
sig_obj_int.push_back(voidptr_type);
sig_obj_int.push_back(int_type);
vector<const llvm::Type*> sig_int_obj;
sig_int_obj.push_back(int_type);
sig_int_obj.push_back(voidptr_type);
vector<const llvm::Type*> sig_obj_number;
sig_obj_number.push_back(voidptr_type);
sig_obj_number.push_back(number_type);
vector<const llvm::Type*> sig_bool;
sig_bool.push_back(bool_type);
vector<const llvm::Type*> sig_int;
sig_int.push_back(int_type);
vector<const llvm::Type*> sig_number;
sig_number.push_back(number_type);
vector<const llvm::Type*> sig_obj;
sig_obj.push_back(voidptr_type);
vector<const llvm::Type*> sig_none;
vector<const llvm::Type*> sig_obj_obj_int;
sig_obj_obj_int.push_back(voidptr_type);
sig_obj_obj_int.push_back(voidptr_type);
sig_obj_obj_int.push_back(int_type);
vector<const llvm::Type*> sig_number_obj;
sig_number_obj.push_back(number_type);
sig_number_obj.push_back(voidptr_type);
vector<const llvm::Type*> sig_int_int;
sig_int_int.push_back(int_type);
sig_int_int.push_back(int_type);
std::vector<const llvm::Type*> struct_elems;
struct_elems.push_back(llvm::PointerType::getUnqual(llvm::PointerType::getUnqual(int_type)));
struct_elems.push_back(llvm::PointerType::getUnqual(llvm::PointerType::getUnqual(int_type)));
struct_elems.push_back(llvm::IntegerType::get(llvm_context,32));
llvm::Type* context_type=llvm::PointerType::getUnqual(llvm::StructType::get(llvm_context,struct_elems,true));
vector<const llvm::Type*> sig_context;
sig_context.push_back(context_type);
vector<const llvm::Type*> sig_context_int;
sig_context_int.push_back(context_type);
sig_context_int.push_back(int_type);
vector<const llvm::Type*> sig_context_int_int;
sig_context_int_int.push_back(context_type);
sig_context_int_int.push_back(int_type);
sig_context_int_int.push_back(int_type);
llvm::FunctionType* FT=NULL;
for(int i=0;i<table_len;i++)
{
switch(table[i].type)
{
case ARGS_OBJ_OBJ:
FT=llvm::FunctionType::get(ret_type, sig_obj_obj, false);
break;
case ARGS_NONE:
FT=llvm::FunctionType::get(ret_type, sig_none, false);
break;
case ARGS_INT_OBJ:
FT=llvm::FunctionType::get(ret_type, sig_int_obj, false);
break;
case ARGS_OBJ_INT:
FT=llvm::FunctionType::get(ret_type, sig_obj_int, false);
break;
case ARGS_OBJ_NUMBER:
FT=llvm::FunctionType::get(ret_type, sig_obj_number, false);
break;
case ARGS_INT:
FT=llvm::FunctionType::get(ret_type, sig_int, false);
break;
case ARGS_NUMBER:
FT=llvm::FunctionType::get(ret_type, sig_number, false);
break;
case ARGS_BOOL:
FT=llvm::FunctionType::get(ret_type, sig_bool, false);
break;
case ARGS_OBJ:
FT=llvm::FunctionType::get(ret_type, sig_obj, false);
break;
case ARGS_OBJ_OBJ_INT:
FT=llvm::FunctionType::get(ret_type, sig_obj_obj_int, false);
break;
case ARGS_NUMBER_OBJ:
FT=llvm::FunctionType::get(ret_type, sig_number_obj, false);
break;
case ARGS_INT_INT:
FT=llvm::FunctionType::get(ret_type, sig_int_int, false);
break;
case ARGS_CONTEXT:
FT=llvm::FunctionType::get(ret_type, sig_context, false);
break;
case ARGS_CONTEXT_INT:
FT=llvm::FunctionType::get(ret_type, sig_context_int, false);
break;
case ARGS_CONTEXT_INT_INT:
FT=llvm::FunctionType::get(ret_type, sig_context_int_int, false);
break;
}
llvm::Function* F=llvm::Function::Create(FT,llvm::Function::ExternalLinkage,table[i].name,module);
ex->addGlobalMapping(F,table[i].addr);
}
}
llvm::Value* method_info::llvm_stack_pop(llvm::IRBuilder<>& builder,llvm::Value* dynamic_stack,llvm::Value* dynamic_stack_index)
{
//decrement stack index
llvm::Value* index=builder.CreateLoad(dynamic_stack_index);
llvm::Constant* constant = llvm::ConstantInt::get(llvm::IntegerType::get(sys->currentVm->llvm_context,32), 1);
llvm::Value* index2=builder.CreateSub(index,constant);
builder.CreateStore(index2,dynamic_stack_index);
llvm::Value* dest=builder.CreateGEP(dynamic_stack,index2);
return builder.CreateLoad(dest);
}
llvm::Value* method_info::llvm_stack_peek(llvm::IRBuilder<>& builder,llvm::Value* dynamic_stack,llvm::Value* dynamic_stack_index)
{
llvm::Value* index=builder.CreateLoad(dynamic_stack_index);
llvm::Constant* constant = llvm::ConstantInt::get(llvm::IntegerType::get(getVm()->llvm_context,32), 1);
llvm::Value* index2=builder.CreateSub(index,constant);
llvm::Value* dest=builder.CreateGEP(dynamic_stack,index2);
return builder.CreateLoad(dest);
}
void method_info::llvm_stack_push(llvm::ExecutionEngine* ex, llvm::IRBuilder<>& builder, llvm::Value* val,
llvm::Value* dynamic_stack,llvm::Value* dynamic_stack_index)
{
llvm::Value* index=builder.CreateLoad(dynamic_stack_index);
llvm::Value* dest=builder.CreateGEP(dynamic_stack,index);
builder.CreateStore(val,dest);
//increment stack index
llvm::Constant* constant = llvm::ConstantInt::get(llvm::IntegerType::get(getVm()->llvm_context,32), 1);
llvm::Value* index2=builder.CreateAdd(index,constant);
builder.CreateStore(index2,dynamic_stack_index);
}
inline stack_entry method_info::static_stack_pop(llvm::IRBuilder<>& builder, vector<stack_entry>& static_stack,
llvm::Value* dynamic_stack, llvm::Value* dynamic_stack_index)
{
//try to get the tail value from the static stack
if(!static_stack.empty())
{
stack_entry ret=static_stack.back();
static_stack.pop_back();
return ret;
}
//try to pop the tail value of the dynamic stack
return stack_entry(llvm_stack_pop(builder,dynamic_stack,dynamic_stack_index),STACK_OBJECT);
}
inline stack_entry method_info::static_stack_peek(llvm::IRBuilder<>& builder, vector<stack_entry>& static_stack,
llvm::Value* dynamic_stack, llvm::Value* dynamic_stack_index)
{
//try to get the tail value from the static stack
if(!static_stack.empty())
return static_stack.back();
//try to load the tail value of the dynamic stack
return stack_entry(llvm_stack_peek(builder,dynamic_stack,dynamic_stack_index),STACK_OBJECT);
}
inline void method_info::static_stack_push(vector<stack_entry>& static_stack, const stack_entry& e)
{
static_stack.push_back(e);
}
void method_info::abstract_value(llvm::ExecutionEngine* ex, llvm::IRBuilder<>& builder, stack_entry& e)
{
switch(e.second)
{
case STACK_OBJECT:
break;
case STACK_INT:
e.first=builder.CreateCall(ex->FindFunctionNamed("abstract_i"),e.first);
break;
case STACK_NUMBER:
e.first=builder.CreateCall(ex->FindFunctionNamed("abstract_d"),e.first);
break;
case STACK_BOOLEAN:
e.first=builder.CreateCall(ex->FindFunctionNamed("abstract_b"),e.first);
break;
default:
throw RunTimeException("Unexpected object type to abstract");
}
}
inline void method_info::syncStacks(llvm::ExecutionEngine* ex,llvm::IRBuilder<>& builder,
vector<stack_entry>& static_stack,llvm::Value* dynamic_stack, llvm::Value* dynamic_stack_index)
{
for(unsigned int i=0;i<static_stack.size();i++)
{
if(static_stack[i].second==STACK_OBJECT);
else if(static_stack[i].second==STACK_INT)
static_stack[i].first=builder.CreateCall(ex->FindFunctionNamed("abstract_i"),static_stack[i].first);
else if(static_stack[i].second==STACK_NUMBER)
static_stack[i].first=builder.CreateCall(ex->FindFunctionNamed("abstract_d"),static_stack[i].first);
else if(static_stack[i].second==STACK_BOOLEAN)
static_stack[i].first=builder.CreateCall(ex->FindFunctionNamed("abstract_b"),static_stack[i].first);
llvm_stack_push(ex,builder,static_stack[i].first,dynamic_stack,dynamic_stack_index);
}
static_stack.clear();
}
inline void method_info::syncLocals(llvm::ExecutionEngine* ex,llvm::IRBuilder<>& builder,
const vector<stack_entry>& static_locals,llvm::Value* locals,const vector<STACK_TYPE>& expected,
const block_info& dest_block)
{
for(unsigned int i=0;i<static_locals.size();i++)
{
if(static_locals[i].second==STACK_NONE)
continue;
//Let's sync with the expected values...
if(static_locals[i].second!=expected[i])
throw RunTimeException("Locals are not as expected");
if(dest_block.locals_reset[i])
{
if(static_locals[i].second==STACK_OBJECT)
builder.CreateCall(ex->FindFunctionNamed("decRef"), static_locals[i].first);
continue;
}
if(static_locals[i].second==dest_block.locals_start[i])
builder.CreateStore(static_locals[i].first,dest_block.locals_start_obj[i]);
else
{
llvm::Value* constant = llvm::ConstantInt::get(llvm::IntegerType::get(getVm()->llvm_context,32), i);
llvm::Value* t=builder.CreateGEP(locals,constant);
llvm::Value* old=builder.CreateLoad(t);
if(static_locals[i].second==STACK_OBJECT)
{
builder.CreateCall(ex->FindFunctionNamed("decRef"), old);
builder.CreateStore(static_locals[i].first,t);
}
else if(static_locals[i].second==STACK_INT)
{
//decRef the previous contents
builder.CreateCall(ex->FindFunctionNamed("decRef"), old);
llvm::Value* v=builder.CreateCall(ex->FindFunctionNamed("abstract_i"),static_locals[i].first);
builder.CreateStore(v,t);
}
else if(static_locals[i].second==STACK_NUMBER)
{
//decRef the previous contents
builder.CreateCall(ex->FindFunctionNamed("decRef"), old);
llvm::Value* v=builder.CreateCall(ex->FindFunctionNamed("abstract_d"),static_locals[i].first);
builder.CreateStore(v,t);
}
else if(static_locals[i].second==STACK_BOOLEAN)
{
//decRef the previous contents
builder.CreateCall(ex->FindFunctionNamed("decRef"), old);
llvm::Value* v=builder.CreateCall(ex->FindFunctionNamed("abstract_b"),static_locals[i].first);
builder.CreateStore(v,t);
}
else
throw RunTimeException("Unexpected object type");
}
}
}
STACK_TYPE block_info::checkProactiveCasting(int local_ip,STACK_TYPE type)
{
pair< map<int,STACK_TYPE>::iterator, bool> result=push_types.insert(make_pair(local_ip,type));
return result.first->second;
}
llvm::FunctionType* method_info::synt_method_prototype(const llvm::Type* pointerType)
{
std::vector<const llvm::Type*> struct_elems;
struct_elems.push_back(llvm::PointerType::getUnqual(pointerType));
struct_elems.push_back(llvm::PointerType::getUnqual(pointerType));
struct_elems.push_back(llvm::IntegerType::get(getVm()->llvm_context,32));
llvm::Type* context_type=llvm::PointerType::getUnqual(llvm::StructType::get(getVm()->llvm_context,struct_elems,true));
//Initialize LLVM representation of method
vector<const llvm::Type*> sig;
sig.push_back(context_type);
return llvm::FunctionType::get(pointerType, sig, false);
}
void method_info::consumeStackForRTMultiname(static_stack_types_vector& stack, int multinameIndex) const
{
int rtdata=context->getMultinameRTData(multinameIndex);
for(int i=0;i<rtdata;i++)
{
if(!stack.empty())
stack.pop_back();
else
break;
}
}
inline pair<unsigned int,STACK_TYPE> method_info::popTypeFromStack(static_stack_types_vector& stack, unsigned int local_ip) const
{
pair<unsigned int, STACK_TYPE> ret;
if(!stack.empty())
{
ret=stack.back();
stack.pop_back();
}
else
ret=make_pair(local_ip,STACK_OBJECT);
return ret;
}
block_info::block_info(const method_info* mi, const char* blockName):blockEnd(0),terminatedBlock(false)
{
BB=llvm::BasicBlock::Create(getVm()->llvm_context, blockName, mi->llvmf);
locals_start.resize(mi->body->local_count,STACK_NONE);
locals_reset.resize(mi->body->local_count,false);
locals_used.resize(mi->body->local_count,false);
}
void method_info::addBlock(map<unsigned int,block_info>& blocks, unsigned int ip, const char* blockName)
{
if(blocks.find(ip)==blocks.end())
blocks.insert(make_pair(ip, block_info(this, blockName)));
}
void method_info::doAnalysis(std::map<unsigned int,block_info>& blocks, llvm::IRBuilder<>& Builder, uint32_t start, uint32_t end)
{
bool stop;
istringstream code(body->code);
code.seekg(start);
vector<stack_entry> static_locals(body->local_count,make_stack_entry(NULL,STACK_NONE));
llvm::LLVMContext& llvm_context=getVm()->llvm_context;
llvm::ExecutionEngine* ex=getVm()->ex;
const llvm::Type* int_type=ex->getTargetData()->getIntPtrType(llvm_context);
const llvm::Type* voidptr_type=llvm::PointerType::getUnqual(int_type);
const llvm::Type* number_type=llvm::Type::getDoubleTy(llvm_context);
const llvm::Type* bool_type=llvm::IntegerType::get(llvm_context,1);
//We try to analyze the blocks first to find if locals can survive the jumps
while(1)
{
//This is initialized to true so that on first iteration the entry block is used
bool last_is_branch=true;
code.clear();
code.seekg(start);
stop=true;
block_info* cur_block=NULL;
static_stack_types_vector static_stack_types;
unsigned int local_ip=0;
u30 localIndex=0;
u8 opcode;
while(1)
{
local_ip=code.tellg();
if(local_ip>=end)
break;
code >> opcode;
if(code.eof())
break;
//Check if we are expecting a new block start
map<unsigned int,block_info>::iterator it=blocks.find(local_ip);
if(it!=blocks.end())
{
if(cur_block)
{
it->second.preds.insert(cur_block);
cur_block->terminatedBlock=true;
cur_block->seqs.insert(&it->second);
}
cur_block=&it->second;
LOG(LOG_TRACE,_("New block at ") << local_ip);
cur_block->locals=cur_block->locals_start;
last_is_branch=false;
static_stack_types.clear();
}
else if(last_is_branch)
{
//TODO: Check this. It seems that there may be invalid code after
//block end
LOG(LOG_TRACE,_("Ignoring at ") << local_ip);
continue;
}
switch(opcode)
{
case 0x03: //throw
{
//see also returnvoid
last_is_branch=true;
cur_block->terminatedBlock=true;
static_stack_types.clear();
for(unsigned int i=0;i<body->local_count;i++)
{
if(cur_block->locals_used[i]==false)
cur_block->locals_reset[i]=true;
}
break;
}
case 0x04: //getsuper
case 0x05: //setsuper
{
u30 t;
code >> t;
static_stack_types.clear();
break;
}
case 0x08: //kill
{
LOG(LOG_TRACE, _("block analysis: kill") );
u30 t;
code >> t;
cur_block->locals[t]=STACK_NONE;
break;
}
case 0x09: //label
{
//Create a new block and insert it in the mapping
unsigned int here=local_ip;
addBlock(blocks,here,"label");
last_is_branch=false;
blocks[here].preds.insert(cur_block);
cur_block->seqs.insert(&blocks[here]);
cur_block->terminatedBlock=true;
static_stack_types.clear();
cur_block=&blocks[here];
LOG(LOG_TRACE,_("New block at ") << local_ip);
cur_block->locals=cur_block->locals_start;
break;
}
case 0x0c: //ifnlt
case 0x0d: //ifnle
case 0x0e: //ifngt
case 0x0f: //ifnge
case 0x10: //jump
case 0x11: //iftrue
case 0x12: //iffalse
case 0x13: //ifeq
case 0x14: //ifne
case 0x15: //iflt
case 0x16: //ifle
case 0x17: //ifge
case 0x18: //ifgt
case 0x19: //ifstricteq
case 0x1a: //ifstrictne
{
LOG(LOG_TRACE, _("block analysis: branches") );
//TODO: implement common data comparison
last_is_branch=true;
s24 t;
code >> t;
int here=code.tellg();
int dest=here+t;
//Create a block for the fallthrough code and insert in the mapping
addBlock(blocks,here,"fall");
blocks[here].preds.insert(cur_block);
cur_block->terminatedBlock=true;
cur_block->seqs.insert(&blocks[here]);
//And for the branch destination, if they are not in the blocks mapping
addBlock(blocks,dest,"then");
blocks[dest].preds.insert(cur_block);
cur_block->seqs.insert(&blocks[dest]);
static_stack_types.clear();
break;
}
case 0x1b: //lookupswitch
{
LOG(LOG_TRACE, _("synt lookupswitch") );
last_is_branch=true;
//TODO: change here to local_ip
int here=int(code.tellg())-1; //Base for the jumps is the instruction itself for the switch
s24 t;
code >> t;
int defaultdest=here+t;
LOG(LOG_TRACE,_("default ") << int(t));
u30 count;
code >> count;
LOG(LOG_TRACE,_("count ")<< int(count));
vector<s24> offsets(count+1);
for(unsigned int i=0;i<count+1;i++)
{
code >> offsets[i];
LOG(LOG_TRACE,_("Case ") << i << _(" ") << offsets[i]);
}
static_stack_types.clear();
addBlock(blocks,defaultdest,"switchdefault");
blocks[defaultdest].preds.insert(cur_block);
cur_block->terminatedBlock=true;
cur_block->seqs.insert(&blocks[defaultdest]);
for(unsigned int i=0;i<offsets.size();i++)
{
int casedest=here+offsets[i];
addBlock(blocks,casedest,"switchcase");
blocks[casedest].preds.insert(cur_block);
cur_block->seqs.insert(&blocks[casedest]);
}
break;
}
case 0x1c: //pushwith
case 0x30: //pushscope
{
static_stack_types.clear();
break;
}
case 0x1d: //popscope
{
break;
}
case 0x1e: //nextname
{
popTypeFromStack(static_stack_types,local_ip);
popTypeFromStack(static_stack_types,local_ip);
static_stack_types.push_back(make_pair(local_ip,STACK_OBJECT));
cur_block->checkProactiveCasting(local_ip,STACK_OBJECT);
break;
}
case 0x20: //pushnull
case 0x21: //pushundefined
case 0x28: //pushnan
{
static_stack_types.push_back(make_pair(local_ip,STACK_OBJECT));
cur_block->checkProactiveCasting(local_ip,STACK_OBJECT);
break;
}
case 0x23: //nextvalue
{
popTypeFromStack(static_stack_types,local_ip);
popTypeFromStack(static_stack_types,local_ip);
static_stack_types.push_back(make_pair(local_ip,STACK_OBJECT));
cur_block->checkProactiveCasting(local_ip,STACK_OBJECT);
break;
}
case 0x24: //pushbyte
{
int8_t t;
code.read((char*)&t,1);
static_stack_types.push_back(make_pair(local_ip,STACK_INT));
cur_block->checkProactiveCasting(local_ip,STACK_INT);
break;
}
case 0x25: //pushshort
{
u30 t;
code >> t;
static_stack_types.push_back(make_pair(local_ip,STACK_INT));
cur_block->checkProactiveCasting(local_ip,STACK_INT);
break;
}
case 0x26: //pushtrue
case 0x27: //pushfalse
{
static_stack_types.push_back(make_pair(local_ip,STACK_BOOLEAN));
cur_block->checkProactiveCasting(local_ip,STACK_BOOLEAN);
break;
}
case 0x29: //pop
{
popTypeFromStack(static_stack_types,local_ip);
break;
}
case 0x2a: //dup
{
pair <int, STACK_TYPE> val=popTypeFromStack(static_stack_types,local_ip);
static_stack_types.push_back(val);
val.first=local_ip;
static_stack_types.push_back(val);
cur_block->checkProactiveCasting(local_ip,val.second);
break;
}
case 0x2b: //swap
{
pair <int, STACK_TYPE> t1,t2;
t1=popTypeFromStack(static_stack_types,local_ip);
t2=popTypeFromStack(static_stack_types,local_ip);
static_stack_types.push_back(t1);
static_stack_types.push_back(t2);
break;
}
case 0x2c: //pushstring
{
u30 t;
code >> t;
static_stack_types.push_back(make_pair(local_ip,STACK_OBJECT));
cur_block->checkProactiveCasting(local_ip,STACK_OBJECT);
break;
}
case 0x2d: //pushint
case 0x2e: //pushuint
{
u30 t;
code >> t;
static_stack_types.push_back(make_pair(local_ip,STACK_INT));
cur_block->checkProactiveCasting(local_ip,STACK_INT);
break;
}
case 0x2f: //pushdouble
{
u30 t;
code >> t;
static_stack_types.push_back(make_pair(local_ip,STACK_NUMBER));
cur_block->checkProactiveCasting(local_ip,STACK_NUMBER);
break;
}
case 0x32: //hasnext2
{
u30 t;
code >> t;
cur_block->locals[t]=STACK_NONE;
code >> t;
cur_block->locals[t]=STACK_NONE;
static_stack_types.push_back(make_pair(local_ip,STACK_BOOLEAN));
cur_block->checkProactiveCasting(local_ip,STACK_BOOLEAN);
break;
}
case 0x40: //newfunction
{
u30 t;
code >> t;
static_stack_types.push_back(make_pair(local_ip,STACK_OBJECT));
cur_block->checkProactiveCasting(local_ip,STACK_OBJECT);
break;
}
case 0x41: //call
case 0x42: //construct
case 0x49: //constructsuper
case 0x53: //constructgenerictype
{
static_stack_types.clear();
u30 t;
code >> t;
break;
}
case 0x45: //callsuper
case 0x46: //callproperty
case 0x4a: //constructprop
case 0x4e: //callsupervoid
case 0x4f: //callpropvoid
{
static_stack_types.clear();
u30 t;
code >> t;
code >> t;
break;
}
case 0x47: //returnvoid
case 0x48: //returnvalue
{
last_is_branch=true;
cur_block->terminatedBlock=true;
static_stack_types.clear();
for(unsigned int i=0;i<body->local_count;i++)
{
if(cur_block->locals_used[i]==false)
cur_block->locals_reset[i]=true;
}
break;
}
case 0x55: //newobject
case 0x56: //newarray
case 0x58: //newclass
case 0x59: //getdescendants
case 0x60: //getlex
{
static_stack_types.clear();
u30 t;
code >> t;
break;
}
case 0x5d: //findpropstrict
case 0x5e: //findproperty
{
u30 t;
code >> t;
//We only need to sync the stack if we need RT data for the multiname
if(this->context->getMultinameRTData(t)!=0)
static_stack_types.clear();
static_stack_types.push_back(make_pair(local_ip,STACK_OBJECT));
cur_block->checkProactiveCasting(local_ip,STACK_OBJECT);
break;
}
case 0x57: //newactivation
{
static_stack_types.push_back(make_pair(local_ip,STACK_OBJECT));
cur_block->checkProactiveCasting(local_ip,STACK_OBJECT);