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-rw-r--r--lldb/source/Expression/IRInterpreter.cpp1266
1 files changed, 19 insertions, 1247 deletions
diff --git a/lldb/source/Expression/IRInterpreter.cpp b/lldb/source/Expression/IRInterpreter.cpp
index bfd8abe793a..509e4636d70 100644
--- a/lldb/source/Expression/IRInterpreter.cpp
+++ b/lldb/source/Expression/IRInterpreter.cpp
@@ -83,7 +83,6 @@ public:
ValueMap m_values;
PlacedValueVector m_placed_values;
DataLayout &m_target_data;
- lldb_private::ClangExpressionDeclMap *m_decl_map;
lldb_private::IRMemoryMap &m_memory_map;
const BasicBlock *m_bb;
BasicBlock::const_iterator m_ii;
@@ -97,10 +96,8 @@ public:
size_t m_addr_byte_size;
InterpreterStackFrame (DataLayout &target_data,
- lldb_private::ClangExpressionDeclMap *decl_map,
lldb_private::IRMemoryMap &memory_map) :
m_target_data (target_data),
- m_decl_map (decl_map),
m_memory_map (memory_map)
{
m_byte_order = (target_data.isLittleEndian() ? lldb::eByteOrderLittle : lldb::eByteOrderBig);
@@ -396,68 +393,6 @@ public:
return Malloc(m_target_data.getTypeAllocSize(type), m_target_data.getPrefTypeAlignment(type));
}
- lldb::addr_t PlaceLLDBValue (const llvm::Value *value, lldb_private::Value lldb_value)
- {
- if (!m_decl_map)
- return false;
-
- lldb_private::Error alloc_error;
- lldb_private::RegisterInfo *reg_info = lldb_value.GetRegisterInfo();
-
- lldb::addr_t ret;
-
- size_t value_size = m_target_data.getTypeStoreSize(value->getType());
- size_t value_align = m_target_data.getPrefTypeAlignment(value->getType());
-
- if (reg_info && (reg_info->encoding == lldb::eEncodingVector))
- value_size = reg_info->byte_size;
-
- if (!reg_info && (lldb_value.GetValueType() == lldb_private::Value::eValueTypeLoadAddress))
- return lldb_value.GetScalar().ULongLong();
-
- ret = Malloc(value_size, value_align);
-
- if (ret == LLDB_INVALID_ADDRESS)
- return LLDB_INVALID_ADDRESS;
-
- lldb_private::DataBufferHeap buf(value_size, 0);
-
- m_decl_map->ReadTarget(m_memory_map, buf.GetBytes(), lldb_value, value_size);
-
- lldb_private::Error write_error;
-
- m_memory_map.WriteMemory(ret, buf.GetBytes(), buf.GetByteSize(), write_error);
-
- if (!write_error.Success())
- {
- lldb_private::Error free_error;
- m_memory_map.Free(ret, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- m_placed_values.push_back(PlacedValue(lldb_value, ret, value_size));
-
- return ret;
- }
-
- void RestoreLLDBValues ()
- {
- if (!m_decl_map)
- return;
-
- for (PlacedValue &placed_value : m_placed_values)
- {
- lldb_private::DataBufferHeap buf(placed_value.size, 0);
-
- lldb_private::Error read_error;
-
- m_memory_map.ReadMemory(buf.GetBytes(), placed_value.process_address, buf.GetByteSize(), read_error);
-
- if (read_error.Success())
- m_decl_map->WriteTarget(m_memory_map, placed_value.lldb_value, buf.GetBytes(), buf.GetByteSize());
- }
- }
-
std::string PrintData (lldb::addr_t addr, llvm::Type *type)
{
size_t length = m_target_data.getTypeStoreSize(type);
@@ -507,395 +442,9 @@ public:
m_values[value] = data_address;
return data_address;
-
- const GlobalValue *global_value = dyn_cast<GlobalValue>(value);
-
- // If the variable is indirected through the argument
- // array then we need to build an extra level of indirection
- // for it. This is the default; only magic arguments like
- // "this", "self", and "_cmd" are direct.
- bool variable_is_this = false;
-
- // If the variable is a function pointer, we do not need to
- // build an extra layer of indirection for it because it is
- // accessed directly.
- bool variable_is_function_address = false;
-
- // Attempt to resolve the value using the program's data.
- // If it is, the values to be created are:
- //
- // data_region - a region of memory in which the variable's data resides.
- // ref_region - a region of memory in which its address (i.e., &var) resides.
- // In the JIT case, this region would be a member of the struct passed in.
- // pointer_region - a region of memory in which the address of the pointer
- // resides. This is an IR-level variable.
- do
- {
- lldb_private::Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
-
- lldb_private::Value resolved_value;
- lldb_private::ClangExpressionVariable::FlagType flags = 0;
-
- if (global_value)
- {
- clang::NamedDecl *decl = IRForTarget::DeclForGlobal(global_value, &module);
-
- if (!decl)
- break;
-
- if (isa<clang::FunctionDecl>(decl))
- variable_is_function_address = true;
-
- resolved_value = m_decl_map->LookupDecl(decl, flags);
- }
- else
- {
- // Special-case "this", "self", and "_cmd"
-
- std::string name_str = value->getName().str();
-
- if (name_str == "this" ||
- name_str == "self" ||
- name_str == "_cmd")
- {
- resolved_value = m_decl_map->GetSpecialValue(lldb_private::ConstString(name_str.c_str()));
- variable_is_this = true;
- }
- }
-
- if (resolved_value.GetScalar().GetType() != lldb_private::Scalar::e_void)
- {
- if (resolved_value.GetContextType() == lldb_private::Value::eContextTypeRegisterInfo)
- {
- if (variable_is_this)
- {
- lldb_private::Error alloc_error;
- lldb::addr_t ref_addr = Malloc(value->getType());
-
- if (ref_addr == LLDB_INVALID_ADDRESS)
- return LLDB_INVALID_ADDRESS;
-
- lldb_private::Error write_error;
- m_memory_map.WritePointerToMemory(ref_addr, resolved_value.GetScalar().ULongLong(), write_error);
-
- if (!write_error.Success())
- return LLDB_INVALID_ADDRESS;
-
- if (log)
- {
- log->Printf("Made an allocation for \"this\" register variable %s", PrintValue(value).c_str());
- log->Printf(" Data region : %llx", (unsigned long long)resolved_value.GetScalar().ULongLong());
- log->Printf(" Ref region : %llx", (unsigned long long)ref_addr);
- }
-
- m_values[value] = ref_addr;
- return ref_addr;
- }
- else if (flags & lldb_private::ClangExpressionVariable::EVBareRegister)
- {
- lldb::addr_t data_address = PlaceLLDBValue(value, resolved_value);
-
- if (!data_address)
- return LLDB_INVALID_ADDRESS;
-
- lldb::addr_t ref_address = MallocPointer();
-
- if (ref_address == LLDB_INVALID_ADDRESS)
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- lldb_private::Error write_error;
-
- m_memory_map.WritePointerToMemory(ref_address, data_address, write_error);
-
- if (!write_error.Success())
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- m_memory_map.Free(ref_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- if (log)
- {
- log->Printf("Made an allocation for bare register variable %s", PrintValue(value).c_str());
- log->Printf(" Data contents : %s", PrintData(data_address, value->getType()).c_str());
- log->Printf(" Data region : 0x%llx", (unsigned long long)data_address);
- log->Printf(" Ref region : 0x%llx", (unsigned long long)ref_address);
- }
-
- m_values[value] = ref_address;
- return ref_address;
- }
- else
- {
- lldb::addr_t data_address = PlaceLLDBValue(value, resolved_value);
-
- if (data_address == LLDB_INVALID_ADDRESS)
- return LLDB_INVALID_ADDRESS;
-
- lldb::addr_t ref_address = MallocPointer();
-
- if (ref_address == LLDB_INVALID_ADDRESS)
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- lldb::addr_t pointer_address = MallocPointer();
-
- if (pointer_address == LLDB_INVALID_ADDRESS)
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- m_memory_map.Free(ref_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- lldb_private::Error write_error;
-
- m_memory_map.WritePointerToMemory(ref_address, data_address, write_error);
-
- if (!write_error.Success())
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- m_memory_map.Free(ref_address, free_error);
- m_memory_map.Free(pointer_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- write_error.Clear();
-
- m_memory_map.WritePointerToMemory(pointer_address, ref_address, write_error);
-
- if (!write_error.Success())
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- m_memory_map.Free(ref_address, free_error);
- m_memory_map.Free(pointer_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- if (log)
- {
- log->Printf("Made an allocation for ordinary register variable %s", PrintValue(value).c_str());
- log->Printf(" Data contents : %s", PrintData(data_address, value->getType()).c_str());
- log->Printf(" Data region : 0x%llx", (unsigned long long)data_address);
- log->Printf(" Ref region : 0x%llx", (unsigned long long)ref_address);
- log->Printf(" Pointer region : 0x%llx", (unsigned long long)pointer_address);
- }
-
- m_values[value] = pointer_address;
- return pointer_address;
- }
- }
- else
- {
- bool no_extra_redirect = (variable_is_this || variable_is_function_address);
-
- lldb::addr_t data_address = PlaceLLDBValue(value, resolved_value);
-
- if (data_address == LLDB_INVALID_ADDRESS)
- return LLDB_INVALID_ADDRESS;
-
- lldb::addr_t ref_address = MallocPointer();
-
- if (ref_address == LLDB_INVALID_ADDRESS)
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- lldb::addr_t pointer_address = LLDB_INVALID_ADDRESS;
-
- if (!no_extra_redirect)
- {
- pointer_address = MallocPointer();
-
- if (pointer_address == LLDB_INVALID_ADDRESS)
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- m_memory_map.Free(ref_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
- }
-
- lldb_private::Error write_error;
-
- m_memory_map.WritePointerToMemory(ref_address, data_address, write_error);
-
- if (!write_error.Success())
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- m_memory_map.Free(ref_address, free_error);
- if (pointer_address != LLDB_INVALID_ADDRESS)
- m_memory_map.Free(pointer_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
-
- if (!no_extra_redirect)
- {
- write_error.Clear();
-
- m_memory_map.WritePointerToMemory(pointer_address, ref_address, write_error);
-
- if (!write_error.Success())
- {
- lldb_private::Error free_error;
- m_memory_map.Free(data_address, free_error);
- m_memory_map.Free(ref_address, free_error);
- if (pointer_address != LLDB_INVALID_ADDRESS)
- m_memory_map.Free(pointer_address, free_error);
- return LLDB_INVALID_ADDRESS;
- }
- }
-
- if (log)
- {
- log->Printf("Made an allocation for %s", PrintValue(value).c_str());
- log->Printf(" Data contents : %s", PrintData(data_address, value->getType()).c_str());
- log->Printf(" Data region : %llx", (unsigned long long)data_address);
- log->Printf(" Ref region : %llx", (unsigned long long)ref_address);
- if (!variable_is_this)
- log->Printf(" Pointer region : %llx", (unsigned long long)pointer_address);
- }
-
- if (no_extra_redirect)
- {
- m_values[value] = ref_address;
- return ref_address;
- }
- else
- {
- m_values[value] = pointer_address;
- return pointer_address;
- }
- }
- }
- }
- while(0);
- }
-
- bool ConstructResult (lldb::ClangExpressionVariableSP &result,
- const GlobalValue *result_value,
- const lldb_private::ConstString &result_name,
- lldb_private::TypeFromParser result_type,
- Module &module)
- {
- if (!m_decl_map)
- return false;
-
- // The result_value resolves to P, a pointer to a region R containing the result data.
- // If the result variable is a reference, the region R contains a pointer to the result R_final in the original process.
-
- if (!result_value)
- return true; // There was no slot for a result – the expression doesn't return one.
-
- ValueMap::iterator i = m_values.find(result_value);
-
- if (i == m_values.end())
- return false; // There was a slot for the result, but we didn't write into it.
-
- lldb::addr_t P = i->second;
-
- Type *pointer_ty = result_value->getType();
- PointerType *pointer_ptr_ty = dyn_cast<PointerType>(pointer_ty);
- if (!pointer_ptr_ty)
- return false;
- Type *R_ty = pointer_ptr_ty->getElementType();
-
- lldb_private::Error read_error;
- lldb::addr_t R;
- m_memory_map.ReadPointerFromMemory(&R, P, read_error);
- if (!read_error.Success())
- return false;
-
- lldb_private::Value base;
-
- bool transient = false;
- bool maybe_make_load = false;
-
- if (m_decl_map->ResultIsReference(result_name))
- {
- PointerType *R_ptr_ty = dyn_cast<PointerType>(R_ty);
- if (!R_ptr_ty)
- return false;
-
- read_error.Clear();
- lldb::addr_t R_pointer;
- m_memory_map.ReadPointerFromMemory(&R_pointer, R, read_error);
- if (!read_error.Success())
- return false;
-
- // We got a bare pointer. We are going to treat it as a load address
- // or a file address, letting decl_map make the choice based on whether
- // or not a process exists.
-
- bool was_placed = false;
-
- for (PlacedValue &value : m_placed_values)
- {
- if (value.process_address == R_pointer)
- {
- base = value.lldb_value;
- was_placed = true;
- break;
- }
- }
-
- if (!was_placed)
- {
- base.SetContext(lldb_private::Value::eContextTypeInvalid, NULL);
- base.SetValueType(lldb_private::Value::eValueTypeFileAddress);
- base.GetScalar() = (unsigned long long)R_pointer;
- maybe_make_load = true;
- }
- }
- else
- {
- base.SetContext(lldb_private::Value::eContextTypeInvalid, NULL);
- base.SetValueType(lldb_private::Value::eValueTypeLoadAddress);
- base.GetScalar() = (unsigned long long)R;
- }
-
- return m_decl_map->CompleteResultVariable (result, m_memory_map, base, result_name, result_type, transient, maybe_make_load);
}
};
-bool
-IRInterpreter::maybeRunOnFunction (lldb_private::ClangExpressionDeclMap *decl_map,
- lldb_private::IRMemoryMap &memory_map,
- lldb_private::Stream *error_stream,
- lldb::ClangExpressionVariableSP &result,
- const lldb_private::ConstString &result_name,
- lldb_private::TypeFromParser result_type,
- Function &llvm_function,
- Module &llvm_module,
- lldb_private::Error &err)
-{
- if (supportsFunction (llvm_function, err))
- return runOnFunction(decl_map,
- memory_map,
- error_stream,
- result,
- result_name,
- result_type,
- llvm_function,
- llvm_module,
- err);
- else
- return false;
-}
-
static const char *unsupported_opcode_error = "Interpreter doesn't handle one of the expression's opcodes";
//static const char *interpreter_initialization_error = "Interpreter couldn't be initialized";
static const char *interpreter_internal_error = "Interpreter encountered an internal error";
@@ -904,15 +453,16 @@ static const char *memory_allocation_error = "Interpreter couldn't allo
static const char *memory_write_error = "Interpreter couldn't write to memory";
static const char *memory_read_error = "Interpreter couldn't read from memory";
static const char *infinite_loop_error = "Interpreter ran for too many cycles";
-static const char *bad_result_error = "Result of expression is in bad memory";
+//static const char *bad_result_error = "Result of expression is in bad memory";
bool
-IRInterpreter::supportsFunction (Function &llvm_function,
- lldb_private::Error &err)
+IRInterpreter::CanInterpret (llvm::Module &module,
+ llvm::Function &function,
+ lldb_private::Error &error)
{
lldb_private::Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
- for (Function::iterator bbi = llvm_function.begin(), bbe = llvm_function.end();
+ for (Function::iterator bbi = function.begin(), bbe = function.end();
bbi != bbe;
++bbi)
{
@@ -926,8 +476,8 @@ IRInterpreter::supportsFunction (Function &llvm_function,
{
if (log)
log->Printf("Unsupported instruction: %s", PrintValue(ii).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(unsupported_opcode_error);
+ error.SetErrorToGenericError();
+ error.SetErrorString(unsupported_opcode_error);
return false;
}
case Instruction::Add:
@@ -942,22 +492,22 @@ IRInterpreter::supportsFunction (Function &llvm_function,
if (!icmp_inst)
{
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
+ error.SetErrorToGenericError();
+ error.SetErrorString(interpreter_internal_error);
return false;
}
switch (icmp_inst->getPredicate())
{
default:
- {
- if (log)
- log->Printf("Unsupported ICmp predicate: %s", PrintValue(ii).c_str());
-
- err.SetErrorToGenericError();
- err.SetErrorString(unsupported_opcode_error);
- return false;
- }
+ {
+ if (log)
+ log->Printf("Unsupported ICmp predicate: %s", PrintValue(ii).c_str());
+
+ error.SetErrorToGenericError();
+ error.SetErrorString(unsupported_opcode_error);
+ return false;
+ }
case CmpInst::ICMP_EQ:
case CmpInst::ICMP_NE:
case CmpInst::ICMP_UGT:
@@ -995,785 +545,7 @@ IRInterpreter::supportsFunction (Function &llvm_function,
}
}
- return true;
-}
-
-bool
-IRInterpreter::runOnFunction (lldb_private::ClangExpressionDeclMap *decl_map,
- lldb_private::IRMemoryMap &memory_map,
- lldb_private::Stream *error_stream,
- lldb::ClangExpressionVariableSP &result,
- const lldb_private::ConstString &result_name,
- lldb_private::TypeFromParser result_type,
- Function &llvm_function,
- Module &llvm_module,
- lldb_private::Error &err)
-{
- lldb_private::Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS));
-
- DataLayout target_data(&llvm_module);
-
- InterpreterStackFrame frame(target_data, decl_map, memory_map);
-
- uint32_t num_insts = 0;
-
- frame.Jump(llvm_function.begin());
-
- while (frame.m_ii != frame.m_ie && (++num_insts < 4096))
- {
- const Instruction *inst = frame.m_ii;
-
- if (log)
- log->Printf("Interpreting %s", PrintValue(inst).c_str());
-
- switch (inst->getOpcode())
- {
- default:
- break;
- case Instruction::Add:
- case Instruction::Sub:
- case Instruction::Mul:
- case Instruction::SDiv:
- case Instruction::UDiv:
- case Instruction::SRem:
- case Instruction::URem:
- case Instruction::Shl:
- case Instruction::LShr:
- case Instruction::AShr:
- case Instruction::And:
- case Instruction::Or:
- case Instruction::Xor:
- {
- const BinaryOperator *bin_op = dyn_cast<BinaryOperator>(inst);
-
- if (!bin_op)
- {
- if (log)
- log->Printf("getOpcode() returns %s, but instruction is not a BinaryOperator", inst->getOpcodeName());
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- Value *lhs = inst->getOperand(0);
- Value *rhs = inst->getOperand(1);
-
- lldb_private::Scalar L;
- lldb_private::Scalar R;
-
- if (!frame.EvaluateValue(L, lhs, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(lhs).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- if (!frame.EvaluateValue(R, rhs, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(rhs).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- lldb_private::Scalar result;
-
- switch (inst->getOpcode())
- {
- default:
- break;
- case Instruction::Add:
- result = L + R;
- break;
- case Instruction::Mul:
- result = L * R;
- break;
- case Instruction::Sub:
- result = L - R;
- break;
- case Instruction::SDiv:
- result = L / R;
- break;
- case Instruction::UDiv:
- result = L.GetRawBits64(0) / R.GetRawBits64(1);
- break;
- case Instruction::SRem:
- result = L % R;
- break;
- case Instruction::URem:
- result = L.GetRawBits64(0) % R.GetRawBits64(1);
- break;
- case Instruction::Shl:
- result = L << R;
- break;
- case Instruction::AShr:
- result = L >> R;
- break;
- case Instruction::LShr:
- result = L;
- result.ShiftRightLogical(R);
- break;
- case Instruction::And:
- result = L & R;
- break;
- case Instruction::Or:
- result = L | R;
- break;
- case Instruction::Xor:
- result = L ^ R;
- break;
- }
-
- frame.AssignValue(inst, result, llvm_module);
-
- if (log)
- {
- log->Printf("Interpreted a %s", inst->getOpcodeName());
- log->Printf(" L : %s", frame.SummarizeValue(lhs).c_str());
- log->Printf(" R : %s", frame.SummarizeValue(rhs).c_str());
- log->Printf(" = : %s", frame.SummarizeValue(inst).c_str());
- }
- }
- break;
- case Instruction::Alloca:
- {
- const AllocaInst *alloca_inst = dyn_cast<AllocaInst>(inst);
-
- if (!alloca_inst)
- {
- if (log)
- log->Printf("getOpcode() returns Alloca, but instruction is not an AllocaInst");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- if (alloca_inst->isArrayAllocation())
- {
- if (log)
- log->Printf("AllocaInsts are not handled if isArrayAllocation() is true");
- err.SetErrorToGenericError();
- err.SetErrorString(unsupported_opcode_error);
- return false;
- }
-
- // The semantics of Alloca are:
- // Create a region R of virtual memory of type T, backed by a data buffer
- // Create a region P of virtual memory of type T*, backed by a data buffer
- // Write the virtual address of R into P
-
- Type *T = alloca_inst->getAllocatedType();
- Type *Tptr = alloca_inst->getType();
-
- lldb::addr_t R = frame.Malloc(T);
-
- if (R == LLDB_INVALID_ADDRESS)
- {
- if (log)
- log->Printf("Couldn't allocate memory for an AllocaInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_allocation_error);
- return false;
- }
-
- lldb::addr_t P = frame.Malloc(Tptr);
-
- if (P == LLDB_INVALID_ADDRESS)
- {
- if (log)
- log->Printf("Couldn't allocate the result pointer for an AllocaInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_allocation_error);
- return false;
- }
-
- lldb_private::Error write_error;
-
- memory_map.WritePointerToMemory(P, R, write_error);
-
- if (!write_error.Success())
- {
- if (log)
- log->Printf("Couldn't write the result pointer for an AllocaInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_write_error);
- lldb_private::Error free_error;
- memory_map.Free(P, free_error);
- memory_map.Free(R, free_error);
- return false;
- }
-
- frame.m_values[alloca_inst] = P;
-
- if (log)
- {
- log->Printf("Interpreted an AllocaInst");
- log->Printf(" R : 0x%llx", R);
- log->Printf(" P : 0x%llx", P);
- }
- }
- break;
- case Instruction::BitCast:
- case Instruction::ZExt:
- {
- const CastInst *cast_inst = dyn_cast<CastInst>(inst);
-
- if (!cast_inst)
- {
- if (log)
- log->Printf("getOpcode() returns %s, but instruction is not a BitCastInst", cast_inst->getOpcodeName());
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- Value *source = cast_inst->getOperand(0);
-
- lldb_private::Scalar S;
-
- if (!frame.EvaluateValue(S, source, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(source).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- frame.AssignValue(inst, S, llvm_module);
- }
- break;
- case Instruction::Br:
- {
- const BranchInst *br_inst = dyn_cast<BranchInst>(inst);
-
- if (!br_inst)
- {
- if (log)
- log->Printf("getOpcode() returns Br, but instruction is not a BranchInst");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- if (br_inst->isConditional())
- {
- Value *condition = br_inst->getCondition();
-
- lldb_private::Scalar C;
-
- if (!frame.EvaluateValue(C, condition, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(condition).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- if (C.GetRawBits64(0))
- frame.Jump(br_inst->getSuccessor(0));
- else
- frame.Jump(br_inst->getSuccessor(1));
-
- if (log)
- {
- log->Printf("Interpreted a BrInst with a condition");
- log->Printf(" cond : %s", frame.SummarizeValue(condition).c_str());
- }
- }
- else
- {
- frame.Jump(br_inst->getSuccessor(0));
-
- if (log)
- {
- log->Printf("Interpreted a BrInst with no condition");
- }
- }
- }
- continue;
- case Instruction::GetElementPtr:
- {
- const GetElementPtrInst *gep_inst = dyn_cast<GetElementPtrInst>(inst);
-
- if (!gep_inst)
- {
- if (log)
- log->Printf("getOpcode() returns GetElementPtr, but instruction is not a GetElementPtrInst");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- const Value *pointer_operand = gep_inst->getPointerOperand();
- Type *pointer_type = pointer_operand->getType();
-
- lldb_private::Scalar P;
-
- if (!frame.EvaluateValue(P, pointer_operand, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(pointer_operand).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- typedef SmallVector <Value *, 8> IndexVector;
- typedef IndexVector::iterator IndexIterator;
-
- SmallVector <Value *, 8> indices (gep_inst->idx_begin(),
- gep_inst->idx_end());
-
- SmallVector <Value *, 8> const_indices;
-
- for (IndexIterator ii = indices.begin(), ie = indices.end();
- ii != ie;
- ++ii)
- {
- ConstantInt *constant_index = dyn_cast<ConstantInt>(*ii);
-
- if (!constant_index)
- {
- lldb_private::Scalar I;
-
- if (!frame.EvaluateValue(I, *ii, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(*ii).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- if (log)
- log->Printf("Evaluated constant index %s as %llu", PrintValue(*ii).c_str(), I.ULongLong(LLDB_INVALID_ADDRESS));
-
- constant_index = cast<ConstantInt>(ConstantInt::get((*ii)->getType(), I.ULongLong(LLDB_INVALID_ADDRESS)));
- }
-
- const_indices.push_back(constant_index);
- }
-
- uint64_t offset = target_data.getIndexedOffset(pointer_type, const_indices);
-
- lldb_private::Scalar Poffset = P + offset;
-
- frame.AssignValue(inst, Poffset, llvm_module);
-
- if (log)
- {
- log->Printf("Interpreted a GetElementPtrInst");
- log->Printf(" P : %s", frame.SummarizeValue(pointer_operand).c_str());
- log->Printf(" Poffset : %s", frame.SummarizeValue(inst).c_str());
- }
- }
- break;
- case Instruction::ICmp:
- {
- const ICmpInst *icmp_inst = dyn_cast<ICmpInst>(inst);
-
- if (!icmp_inst)
- {
- if (log)
- log->Printf("getOpcode() returns ICmp, but instruction is not an ICmpInst");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- CmpInst::Predicate predicate = icmp_inst->getPredicate();
-
- Value *lhs = inst->getOperand(0);
- Value *rhs = inst->getOperand(1);
-
- lldb_private::Scalar L;
- lldb_private::Scalar R;
-
- if (!frame.EvaluateValue(L, lhs, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(lhs).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- if (!frame.EvaluateValue(R, rhs, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(rhs).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- lldb_private::Scalar result;
-
- switch (predicate)
- {
- default:
- return false;
- case CmpInst::ICMP_EQ:
- result = (L == R);
- break;
- case CmpInst::ICMP_NE:
- result = (L != R);
- break;
- case CmpInst::ICMP_UGT:
- result = (L.GetRawBits64(0) > R.GetRawBits64(0));
- break;
- case CmpInst::ICMP_UGE:
- result = (L.GetRawBits64(0) >= R.GetRawBits64(0));
- break;
- case CmpInst::ICMP_ULT:
- result = (L.GetRawBits64(0) < R.GetRawBits64(0));
- break;
- case CmpInst::ICMP_ULE:
- result = (L.GetRawBits64(0) <= R.GetRawBits64(0));
- break;
- case CmpInst::ICMP_SGT:
- result = (L > R);
- break;
- case CmpInst::ICMP_SGE:
- result = (L >= R);
- break;
- case CmpInst::ICMP_SLT:
- result = (L < R);
- break;
- case CmpInst::ICMP_SLE:
- result = (L <= R);
- break;
- }
-
- frame.AssignValue(inst, result, llvm_module);
-
- if (log)
- {
- log->Printf("Interpreted an ICmpInst");
- log->Printf(" L : %s", frame.SummarizeValue(lhs).c_str());
- log->Printf(" R : %s", frame.SummarizeValue(rhs).c_str());
- log->Printf(" = : %s", frame.SummarizeValue(inst).c_str());
- }
- }
- break;
- case Instruction::IntToPtr:
- {
- const IntToPtrInst *int_to_ptr_inst = dyn_cast<IntToPtrInst>(inst);
-
- if (!int_to_ptr_inst)
- {
- if (log)
- log->Printf("getOpcode() returns IntToPtr, but instruction is not an IntToPtrInst");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- Value *src_operand = int_to_ptr_inst->getOperand(0);
-
- lldb_private::Scalar I;
-
- if (!frame.EvaluateValue(I, src_operand, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(src_operand).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- frame.AssignValue(inst, I, llvm_module);
-
- if (log)
- {
- log->Printf("Interpreted an IntToPtr");
- log->Printf(" Src : %s", frame.SummarizeValue(src_operand).c_str());
- log->Printf(" = : %s", frame.SummarizeValue(inst).c_str());
- }
- }
- break;
- case Instruction::PtrToInt:
- {
- const PtrToIntInst *ptr_to_int_inst = dyn_cast<PtrToIntInst>(inst);
-
- if (!ptr_to_int_inst)
- {
- if (log)
- log->Printf("getOpcode() returns PtrToInt, but instruction is not an PtrToIntInst");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- Value *src_operand = ptr_to_int_inst->getOperand(0);
-
- lldb_private::Scalar I;
-
- if (!frame.EvaluateValue(I, src_operand, llvm_module))
- {
- if (log)
- log->Printf("Couldn't evaluate %s", PrintValue(src_operand).c_str());
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- frame.AssignValue(inst, I, llvm_module);
-
- if (log)
- {
- log->Printf("Interpreted a PtrToInt");
- log->Printf(" Src : %s", frame.SummarizeValue(src_operand).c_str());
- log->Printf(" = : %s", frame.SummarizeValue(inst).c_str());
- }
- }
- break;
- case Instruction::Load:
- {
- const LoadInst *load_inst = dyn_cast<LoadInst>(inst);
-
- if (!load_inst)
- {
- if (log)
- log->Printf("getOpcode() returns Load, but instruction is not a LoadInst");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- // The semantics of Load are:
- // Create a region D that will contain the loaded data
- // Resolve the region P containing a pointer
- // Dereference P to get the region R that the data should be loaded from
- // Transfer a unit of type type(D) from R to D
-
- const Value *pointer_operand = load_inst->getPointerOperand();
-
- Type *pointer_ty = pointer_operand->getType();
- PointerType *pointer_ptr_ty = dyn_cast<PointerType>(pointer_ty);
- if (!pointer_ptr_ty)
- {
- if (log)
- log->Printf("getPointerOperand()->getType() is not a PointerType");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
- Type *target_ty = pointer_ptr_ty->getElementType();
-
- lldb::addr_t D = frame.ResolveValue(load_inst, llvm_module);
- lldb::addr_t P = frame.ResolveValue(pointer_operand, llvm_module);
-
- if (D == LLDB_INVALID_ADDRESS)
- {
- if (log)
- log->Printf("LoadInst's value doesn't resolve to anything");
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- if (P == LLDB_INVALID_ADDRESS)
- {
- if (log)
- log->Printf("LoadInst's pointer doesn't resolve to anything");
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- lldb::addr_t R;
- lldb_private::Error read_error;
- memory_map.ReadPointerFromMemory(&R, P, read_error);
-
- if (!read_error.Success())
- {
- if (log)
- log->Printf("Couldn't read the address to be loaded for a LoadInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_read_error);
- return false;
- }
-
- size_t target_size = target_data.getTypeStoreSize(target_ty);
- lldb_private::DataBufferHeap buffer(target_size, 0);
-
- read_error.Clear();
- memory_map.ReadMemory(buffer.GetBytes(), R, buffer.GetByteSize(), read_error);
- if (!read_error.Success())
- {
- if (log)
- log->Printf("Couldn't read from a region on behalf of a LoadInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_read_error);
- return false;
- }
-
- lldb_private::Error write_error;
- memory_map.WriteMemory(D, buffer.GetBytes(), buffer.GetByteSize(), write_error);
- if (!write_error.Success())
- {
- if (log)
- log->Printf("Couldn't write to a region on behalf of a LoadInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_read_error);
- return false;
- }
-
- if (log)
- {
- log->Printf("Interpreted a LoadInst");
- log->Printf(" P : 0x%llx", P);
- log->Printf(" R : 0x%llx", R);
- log->Printf(" D : 0x%llx", D);
- }
- }
- break;
- case Instruction::Ret:
- {
- frame.RestoreLLDBValues();
-
- if (result_name.IsEmpty())
- return true;
-
- GlobalValue *result_value = llvm_module.getNamedValue(result_name.GetCString());
-
- if (!frame.ConstructResult(result, result_value, result_name, result_type, llvm_module))
- {
- if (log)
- log->Printf("Couldn't construct the expression's result");
- err.SetErrorToGenericError();
- err.SetErrorString(bad_result_error);
- return false;
- }
-
- return true;
- }
- case Instruction::Store:
- {
- const StoreInst *store_inst = dyn_cast<StoreInst>(inst);
-
- if (!store_inst)
- {
- if (log)
- log->Printf("getOpcode() returns Store, but instruction is not a StoreInst");
- err.SetErrorToGenericError();
- err.SetErrorString(interpreter_internal_error);
- return false;
- }
-
- // The semantics of Store are:
- // Resolve the region D containing the data to be stored
- // Resolve the region P containing a pointer
- // Dereference P to get the region R that the data should be stored in
- // Transfer a unit of type type(D) from D to R
-
- const Value *value_operand = store_inst->getValueOperand();
- const Value *pointer_operand = store_inst->getPointerOperand();
-
- Type *pointer_ty = pointer_operand->getType();
- PointerType *pointer_ptr_ty = dyn_cast<PointerType>(pointer_ty);
- if (!pointer_ptr_ty)
- return false;
- Type *target_ty = pointer_ptr_ty->getElementType();
-
- lldb::addr_t D = frame.ResolveValue(value_operand, llvm_module);
- lldb::addr_t P = frame.ResolveValue(pointer_operand, llvm_module);
-
- if (D == LLDB_INVALID_ADDRESS)
- {
- if (log)
- log->Printf("StoreInst's value doesn't resolve to anything");
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- if (P == LLDB_INVALID_ADDRESS)
- {
- if (log)
- log->Printf("StoreInst's pointer doesn't resolve to anything");
- err.SetErrorToGenericError();
- err.SetErrorString(bad_value_error);
- return false;
- }
-
- lldb::addr_t R;
- lldb_private::Error read_error;
- memory_map.ReadPointerFromMemory(&R, P, read_error);
-
- if (!read_error.Success())
- {
- if (log)
- log->Printf("Couldn't read the address to be loaded for a LoadInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_read_error);
- return false;
- }
-
- size_t target_size = target_data.getTypeStoreSize(target_ty);
- lldb_private::DataBufferHeap buffer(target_size, 0);
-
- read_error.Clear();
- memory_map.ReadMemory(buffer.GetBytes(), D, buffer.GetByteSize(), read_error);
- if (!read_error.Success())
- {
- if (log)
- log->Printf("Couldn't read from a region on behalf of a StoreInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_read_error);
- return false;
- }
-
- lldb_private::Error write_error;
- memory_map.WriteMemory(R, buffer.GetBytes(), buffer.GetByteSize(), write_error);
- if (!write_error.Success())
- {
- if (log)
- log->Printf("Couldn't write to a region on behalf of a StoreInst");
- err.SetErrorToGenericError();
- err.SetErrorString(memory_read_error);
- return false;
- }
-
- if (log)
- {
- log->Printf("Interpreted a StoreInst");
- log->Printf(" D : 0x%llx", D);
- log->Printf(" P : 0x%llx", P);
- log->Printf(" R : 0x%llx", R);
- }
- }
- break;
- }
-
- ++frame.m_ii;
- }
-
- if (num_insts >= 4096)
- {
- err.SetErrorToGenericError();
- err.SetErrorString(infinite_loop_error);
- return false;
- }
-
- return false;
-}
-
-// new api
-
-bool
-IRInterpreter::CanInterpret (llvm::Module &module,
- llvm::Function &function,
- lldb_private::Error &error)
-{
- return supportsFunction(function, error);
-}
+ return true;}
bool
IRInterpreter::Interpret (llvm::Module &module,
@@ -1798,7 +570,7 @@ IRInterpreter::Interpret (llvm::Module &module,
DataLayout data_layout(&module);
- InterpreterStackFrame frame(data_layout, NULL, memory_map);
+ InterpreterStackFrame frame(data_layout, memory_map);
if (frame.m_frame_process_address == LLDB_INVALID_ADDRESS)
{
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