void
Compile_X_Shift ( Compiler * compiler, int32 op, int32 stackFlag )
{
//if ( CheckOptimizeOperands ( compiler, 5 ) )
int optFlag = CheckOptimizeOperands ( compiler, 5 ) ;
if ( optFlag == OPTIMIZE_DONE ) return ;
else if ( optFlag )
{
// _Compile_Group2 ( int mod, int regOpCode, int rm, int sib, cell disp, cell imm )
_Compile_Group2 ( compiler->Optimizer->Optimize_Mod,
op, compiler->Optimizer->Optimize_Rm, 0, compiler->Optimizer->Optimize_Disp, compiler->Optimizer->Optimize_Imm ) ;
if ( stackFlag && ( compiler->Optimizer->Optimize_Rm != DSP ) ) // if the result is not already tos
{
Word *zero = Compiler_WordStack ( compiler, 0 ) ; // refers to this current multiply insn word
if ( compiler->Optimizer->Optimize_Rm != EAX ) _Compile_Move_Rm_To_Reg ( EAX, compiler->Optimizer->Optimize_Rm,
compiler->Optimizer->Optimize_Disp ) ;
zero->StackPushRegisterCode = Here ;
_Compile_Stack_Push_Reg ( DSP, EAX ) ;
}
}
else
{
_Compile_Move_StackN_To_Reg ( ECX, DSP, 0 ) ;
Compile_SUBI ( REG, ESI, 0, CELL, BYTE ) ;
//_Compile_Group2_CL ( int mod, int regOpCode, int rm, int sib, cell disp )
_Compile_Group2_CL ( MEM, op, DSP, 0, 0 ) ;
}
}
void
Compile_Poke ( Compiler * compiler, int32 stackReg ) // =
{
//if ( CheckOptimizeOperands ( compiler, 3 ) )
int optFlag = CheckOptimizeOperands ( compiler, 4 ) ;
if ( optFlag == OPTIMIZE_DONE ) return ;
else if ( optFlag )
{
// _Compile_MoveImm ( cell direction, cell rm, cell disp, cell imm, cell operandSize )
if ( compiler->Optimizer->OptimizeFlag & OPTIMIZE_IMM ) _Compile_MoveImm ( compiler->Optimizer->Optimize_Dest_RegOrMem,
compiler->Optimizer->Optimize_Rm, 0, compiler->Optimizer->Optimize_Disp, compiler->Optimizer->Optimize_Imm, CELL ) ;
else if ( compiler->Optimizer->OptimizeFlag & OPTIMIZE_REGISTER )
{
// allow for one of these to be EAX which is 0
if ( compiler->Optimizer->Optimize_SrcReg || compiler->Optimizer->Optimize_DstReg ) _Compile_Move_Reg_To_Reg ( compiler->Optimizer->Optimize_DstReg, compiler->Optimizer->Optimize_SrcReg ) ;
//_Compile_Move ( int32 direction, int32 reg, int32 rm, int32 sib, int32 disp )
else _Compile_Move ( compiler->Optimizer->Optimize_Dest_RegOrMem, compiler->Optimizer->Optimize_Reg, compiler->Optimizer->Optimize_Rm, 0, 0 ) ;
}
else _Compile_Move_Reg_To_Rm ( compiler->Optimizer->Optimize_Rm, compiler->Optimizer->Optimize_Disp, compiler->Optimizer->Optimize_Reg ) ;
}
else
{
_Compile_Move_Rm_To_Reg ( ECX, stackReg, 0 ) ;
_Compile_Move_Rm_To_Reg ( EAX, stackReg, - CELL_SIZE ) ;
_Compile_Move_Reg_To_Rm ( EAX, 0, ECX ) ;
Compile_SUBI ( REG, stackReg, 0, 8, BYTE ) ;
}
}
// n = *m
// ( n m -- )
//
void
Compile_AtEqual ( int32 stackReg ) // !
{
_Compile_Move_Rm_To_Reg ( EAX, stackReg, 0 ) ;
_Compile_Move_Rm_To_Reg ( EAX, EAX, 0 ) ;
_Compile_Move_Rm_To_Reg ( ECX, stackReg, - CELL_SIZE ) ;
_Compile_Move_Reg_To_Rm ( ECX, 0, EAX ) ;
Compile_SUBI ( REG, stackReg, 0, CELL_SIZE * 2, BYTE ) ;
}
void
_Compiler_RemoveLocalFrame ( Compiler * compiler )
{
int32 parameterVarsSubAmount, returnValueFlag ;
Compiler_SetLocalsFrameSize_AtItsCellOffset ( compiler ) ;
parameterVarsSubAmount = ( compiler->NumberOfParameterVariables * CELL ) ;
if ( GetState ( _Context_, C_SYNTAX ) && ( ! String_Equal ( compiler->CurrentWord->S_ContainingNamespace->Name, "void" ) ) )
{
SetState ( compiler, RETURN_TOS, true ) ;
}
//returnValueFlag = rvf = ( _Context_->CurrentRunWord->CProperty & C_RETURN ) || ( GetState ( compiler, RETURN_TOS | RETURN_EAX ) ) || IsWordRecursive || compiler->ReturnVariableWord ;
returnValueFlag = ( _Context_->CurrentlyRunningWord->CProperty & C_RETURN ) || ( GetState ( compiler, RETURN_TOS | RETURN_EAX ) ) || IsWordRecursive || compiler->ReturnVariableWord ;
Word * word = compiler->ReturnVariableWord ;
#if 0
if ( GetState ( _Context_->Compiler0, SAVE_ESP ) )
{
_Compile_ESP_Restore ( ) ;
}
#endif
if ( word )
{
_Compile_GetVarLitObj_RValue_To_Reg ( word, EAX, 0 ) ; // nb. these variables have no lasting lvalue - they exist on the stack - therefore we can only return there rvalue
}
//else if ( compiler->NumberOfParameterVariables && returnValueFlag && ( ! compiler->NumberOfRegisterVariables ) && ( ! GetState ( compiler, RETURN_EAX ) ) )
else if ( compiler->NumberOfParameterVariables && returnValueFlag && ( ! GetState ( compiler, RETURN_EAX ) ) )
{
#if 0 // for some unknown reason this code will overwrite the function call address also
byte add_esi_eax [ ] = { 0x01, 0x06 } ; //0106 add [esi], eax
byte * here = _Q_CodeByteArray->EndIndex ;
if ( memcmp ( add_esi_eax, here - 2, 2 ) )
{
//_ByteArray_UnAppendSpace ( _Q_CodeByteArray, 2 ) ;
SetHere ( Here - 2 ) ;
_Compile_X_Group1 ( ADD, REG, MEM, EAX, DSP, 0, 0, CELL ) ; // result is on TOS
}
//{returnValueFlag ++ ; rvf = 0 ;}
//else
#else
Compile_Move_TOS_To_EAX ( DSP ) ; // save TOS to EAX so we can set return it as TOS below
#endif
//else { parameterVarsSubAmount += CELL ; rvf = 0 ; }
}
else if ( GetState ( compiler, RETURN_TOS ) )
{
Compile_Move_TOS_To_EAX ( DSP ) ;
}
_Compile_LEA ( DSP, FP, 0, - LocalVarIndex_Disp ( 1 ) ) ; // restore sp - release locals stack frame
_Compile_Move_StackN_To_Reg ( FP, DSP, 1 ) ; // restore the saved pre fp - cf AddLocalsFrame
// remove the incoming parameters -- like in C
parameterVarsSubAmount -= returnValueFlag * CELL ; // reduce the subtract amount to make room for the return value
if ( parameterVarsSubAmount > 0 )
{
Compile_SUBI ( REG, DSP, 0, parameterVarsSubAmount, CELL ) ; // remove stack variables
}
else if ( parameterVarsSubAmount < 0 )
{
Compile_ADDI ( REG, DSP, 0, - parameterVarsSubAmount, CELL ) ; // add a place on the stack for return value
}
//if ( rvf && returnValueFlag && ( ! GetState ( compiler, RETURN_EAX ) ) )
if ( returnValueFlag && ( ! GetState ( compiler, RETURN_EAX ) ) )
{
// nb : stack was already adjusted accordingly for this above by reducing the SUBI subAmount or adding if there weren't any parameter variables
Compile_Move_EAX_To_TOS ( DSP ) ;
}
}