HRESULT MethodCompiler::Opcode::Initialize( MethodCompiler* mc, CLR_OFFSET offset, CLR_OFFSET* targets )
{
TINYCLR_HEADER();
CLR_PMETADATA ip = mc->m_ipStart + offset;
//--//
memset( this, 0, sizeof(*this) );
m_op = CLR_ReadNextOpcodeCompressed( ip );
m_ol = &c_CLR_RT_OpcodeLookup[ m_op ];
m_ipOffset = offset;
m_stackPop = m_ol->StackPop ();
m_stackPush = m_ol->StackPush();
m_token = CLR_EmptyToken;
m_value.SetDataId( CLR_RT_HEAPBLOCK_RAW_ID(DATATYPE_FIRST_INVALID, 0, 1) );
//--//
switch(m_ol->m_opParam)
{
case CLR_OpcodeParam_Field:
{
FETCH_ARG_COMPRESSED_FIELDTOKEN(arg,ip);
m_token = arg;
}
break;
case CLR_OpcodeParam_Method:
{
FETCH_ARG_COMPRESSED_METHODTOKEN(arg,ip);
m_token = arg;
}
break;
case CLR_OpcodeParam_Type:
{
FETCH_ARG_COMPRESSED_TYPETOKEN(arg,ip);
m_token = arg;
}
break;
case CLR_OpcodeParam_String:
{
FETCH_ARG_COMPRESSED_STRINGTOKEN(arg,ip);
m_token = arg;
}
break;
case CLR_OpcodeParam_Tok:
{
FETCH_ARG_TOKEN(arg,ip);
m_token = arg;
}
break;
case CLR_OpcodeParam_Sig:
TINYCLR_SET_AND_LEAVE(CLR_E_JITTER_OPCODE_UNSUPPORTED);
case CLR_OpcodeParam_BrTarget:
{
FETCH_ARG_INT16(arg,ip);
m_numTargets = 1;
if(targets)
{
*targets++ = (CLR_OFFSET)(ip - mc->m_ipStart + arg);
}
}
break;
case CLR_OpcodeParam_ShortBrTarget:
{
FETCH_ARG_INT8(arg,ip);
m_numTargets = 1;
if(targets)
{
*targets++ = (CLR_OFFSET)(ip - mc->m_ipStart + arg);
}
}
break;
case CLR_OpcodeParam_I:
{
FETCH_ARG_INT32(arg,ip);
m_value.SetInteger( arg );
}
break;
case CLR_OpcodeParam_I8:
{
FETCH_ARG_INT64(arg,ip);
m_value.SetInteger( arg );
}
break;
case CLR_OpcodeParam_None:
if(m_ol->m_flags & CLR_RT_OpcodeLookup::ATTRIB_HAS_INDEX)
{
m_value.SetInteger( (CLR_UINT32)m_ol->m_index );
}
if(m_ol->m_flags & CLR_RT_OpcodeLookup::ATTRIB_HAS_I4)
{
m_value.SetInteger( (CLR_INT32)m_ol->m_index );
}
break;
case CLR_OpcodeParam_R:
{
FETCH_ARG_UINT64(arg,ip);
m_value.SetDoubleFromBits( arg );
}
break;
case CLR_OpcodeParam_Switch:
{
FETCH_ARG_UINT8(arg,ip);
m_numTargets = arg;
CLR_UINT32 base = (CLR_UINT32)(ip - mc->m_ipStart + arg * sizeof(CLR_INT16));
while(arg--)
{
CLR_INT32 offset; TINYCLR_READ_UNALIGNED_INT16( offset, ip );
if(targets)
{
*targets++ = (CLR_OFFSET)(base + offset);
}
}
}
break;
case CLR_OpcodeParam_Var:
{
FETCH_ARG_UINT16(arg,ip);
m_value.SetInteger( (CLR_UINT32)m_ol->m_index );
}
break;
case CLR_OpcodeParam_ShortI:
{
FETCH_ARG_INT8(arg,ip);
m_value.SetInteger( (CLR_INT32)arg );
}
break;
case CLR_OpcodeParam_ShortR:
{
FETCH_ARG_UINT32(arg,ip);
m_value.SetFloatFromBits( arg );
}
break;
case CLR_OpcodeParam_ShortVar:
{
FETCH_ARG_UINT8(arg,ip);
m_value.SetInteger( (CLR_UINT32)arg );
}
break;
}
if(m_token != CLR_EmptyToken)
{
CLR_RT_Assembly* assm = mc->m_mdInst.m_assm;
switch(CLR_TypeFromTk( m_token ))
{
case TBL_TypeRef:
case TBL_TypeDef:
{
if(m_tdInst.ResolveToken( m_token, assm ) == false)
{
TINYCLR_SET_AND_LEAVE(CLR_E_JITTER_OPCODE_INVALID_TOKEN__TYPE);
}
}
break;
case TBL_MethodRef:
case TBL_MethodDef:
{
if(m_mdInst.ResolveToken( m_token, assm ) == false)
{
TINYCLR_SET_AND_LEAVE(CLR_E_JITTER_OPCODE_INVALID_TOKEN__METHOD);
}
if(m_ol->m_flowCtrl == CLR_FlowControl_CALL)
{
m_stackPop += m_mdInst.m_target->numArgs;
if(m_ol->m_logicalOpcode == LO_NewObject)
{
m_stackPop -= 1;
}
if(m_mdInst.m_target->retVal != DATATYPE_VOID)
{
m_stackPush += 1;
}
}
}
break;
case TBL_FieldRef:
case TBL_FieldDef:
{
if(m_fdInst.ResolveToken( m_token, assm ) == false)
{
TINYCLR_SET_AND_LEAVE(CLR_E_JITTER_OPCODE_INVALID_TOKEN__FIELD);
}
}
break;
case TBL_TypeSpec:
{
CLR_RT_TypeSpec_Instance sig;
CLR_RT_TypeDescriptor desc;
if(sig.ResolveToken( m_token, assm ) == false)
{
TINYCLR_SET_AND_LEAVE(CLR_E_JITTER_OPCODE_INVALID_TOKEN__TYPE);
}
TINYCLR_CHECK_HRESULT(desc.InitializeFromTypeSpec( sig ));
m_tdInst.InitializeFromIndex( desc.m_reflex.m_data.m_type );
m_tdInstLevels = desc.m_reflex.m_levels;
}
break;
case TBL_Strings:
break;
default:
TINYCLR_SET_AND_LEAVE(CLR_E_JITTER_OPCODE_INVALID_SIGNATURE);
}
}
m_ipLength = (CLR_OFFSET)(ip - mc->m_ipStart - m_ipOffset);
TINYCLR_NOCLEANUP();
}
HRESULT MetaData::ByteCode::Parse_ByteCode( const MethodDef& md, COR_ILMETHOD_DECODER& il )
{
TINYCLR_HEADER();
const CLR_UINT8* ip = il.Code;
const CLR_UINT8* ipStart = ip;
const CLR_UINT8* ipEnd = ip + il.GetCodeSize();
//wprintf( L"Method: %s : %d\n", m_name.c_str(), il.GetMaxStack() );
while(ip < ipEnd)
{
const CLR_UINT8* ipPre = ip;
CLR_OPCODE op = CLR_ReadNextOpcode( ip );
const CLR_RT_OpcodeLookup& ol = c_CLR_RT_OpcodeLookup[op];
//printf( " %08X %s\n", ip - ipStart, opcodeName[op] );
if(ol.m_flags & CLR_RT_OpcodeLookup::COND_OVERFLOW)
{
std::wstring str;
if(SUCCEEDED(ErrorReporting::ConstructErrorOrigin( str, md.m_method.m_holder->m_pSymReader, md.m_md, (ULONG32)(ipPre - ipStart) )))
{
ErrorReporting::Print( str.c_str(), NULL, FALSE, 0, L"opcode '%S' -- overflow will not throw exception", ol.m_name );
}
}
if(op < CEE_COUNT && ol.m_logicalOpcode != LO_Unsupported)
{
const CLR_UINT8* ipEnd = CLR_SkipBodyOfOpcode( ip, op );
LogicalOpcodeDesc& ref = *(m_opcodes.insert( m_opcodes.end(), LogicalOpcodeDesc( ol, op, ipPre, ipEnd ) ));
switch(ol.m_opParam)
{
case CLR_OpcodeParam_Field:
{
FETCH_ARG_UINT32(arg,ip);
ref.m_token = (mdToken)arg;
}
break;
case CLR_OpcodeParam_Method:
{
FETCH_ARG_UINT32(arg,ip);
ref.m_token = (mdToken)arg;
}
break;
case CLR_OpcodeParam_Type:
{
FETCH_ARG_UINT32(arg,ip);
ref.m_token = (mdToken)arg;
}
break;
case CLR_OpcodeParam_String:
{
FETCH_ARG_UINT32(arg,ip);
ref.m_token = (mdToken)arg;
}
break;
case CLR_OpcodeParam_Tok:
{
FETCH_ARG_UINT32(arg,ip);
ref.m_token = (mdToken)arg;
}
break;
case CLR_OpcodeParam_Sig:
TINYCLR_SET_AND_LEAVE(CLR_E_UNSUPPORTED_INSTRUCTION);
case CLR_OpcodeParam_BrTarget:
{
FETCH_ARG_INT32(arg,ip);
ref.m_targets.resize( 1 );
ref.m_targets[0] = ref.m_ipLength + arg;
}
break;
case CLR_OpcodeParam_ShortBrTarget:
{
FETCH_ARG_INT8(arg,ip);
ref.m_targets.resize( 1 );
ref.m_targets[0] = ref.m_ipLength + arg;
}
break;
case CLR_OpcodeParam_I:
{
FETCH_ARG_INT32(arg,ip);
ref.m_arg_I4 = arg;
}
break;
case CLR_OpcodeParam_I8:
{
FETCH_ARG_INT64(arg,ip);
ref.m_arg_I8 = arg;
}
break;
case CLR_OpcodeParam_None:
if(ol.m_flags & CLR_RT_OpcodeLookup::ATTRIB_HAS_INDEX)
{
ref.m_index = ol.m_index;
}
if(ol.m_flags & CLR_RT_OpcodeLookup::ATTRIB_HAS_I4)
{
ref.m_arg_I4 = ol.m_index;
}
break;
case CLR_OpcodeParam_R:
{
FETCH_ARG_UINT64(arg,ip);
ref.m_arg_R8 = arg;
}
break;
case CLR_OpcodeParam_Switch:
{
FETCH_ARG_UINT32(arg,ip);
ref.m_targets.resize( arg );
for(CLR_UINT32 i=0; i<arg; i++)
{
CLR_INT32& val = ref.m_targets[i];
memcpy( &val, ip, sizeof(CLR_INT32) );
ip += sizeof(CLR_INT32);
val = (CLR_INT32)ref.m_ipLength + val;
}
}
break;
case CLR_OpcodeParam_Var:
{
FETCH_ARG_UINT16(arg,ip);
ref.m_index = arg;
}
break;
case CLR_OpcodeParam_ShortI:
{
FETCH_ARG_INT8(arg,ip);
ref.m_arg_I4 = arg;
}
break;
case CLR_OpcodeParam_ShortR:
{
FETCH_ARG_UINT32(arg,ip);
ref.m_arg_R4 = arg;
}
break;
case CLR_OpcodeParam_ShortVar:
{
FETCH_ARG_UINT8(arg,ip);
ref.m_index = arg;
}
break;
}
}
else
{
wprintf( L"Method: %s\n", m_name.c_str() );
wprintf( L" %08X %S -- Not supported\n", ipPre - ipStart, op < CEE_COUNT ? c_CLR_RT_OpcodeLookup[op].m_name : "<invalid>" );
TINYCLR_SET_AND_LEAVE(CLR_E_FAIL);
}
}
TINYCLR_NOCLEANUP();
}
