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M68k_Cmpi.c
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M68k_Cmpi.c
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/*
* Copyright (c) 2014-2024 Rene W. Olsen < renewolsen @ gmail . com >
*
* This software is released under the GNU General Public License, version 3.
* For the full text of the license, please visit:
* https://www.gnu.org/licenses/gpl-3.0.html
*
* You can also find a copy of the license in the LICENSE file included with this software.
*/
// --
#include "ReSrc4.h"
// --
void Cmd_CMPI( struct M68kStruct *ms )
{
int size;
size = ( ms->ms_Opcode & 0x00c00000 ) >> 22;
switch( size )
{
case 0:
{
ms->ms_Str_Opcode = ( ShortOpcodes ) ? "Cmp.b" : "Cmpi.b" ;
ms->ms_ArgType = OS_Byte;
break;
}
case 1:
{
ms->ms_Str_Opcode = ( ShortOpcodes ) ? "Cmp.w" : "Cmpi.w" ;
ms->ms_ArgType = OS_Word;
break;
}
case 2:
{
ms->ms_Str_Opcode = ( ShortOpcodes ) ? "Cmp.l" : "Cmpi.l" ;
ms->ms_ArgType = OS_Long;
break;
}
default:
{
printf( "Unsupported 'Cmpi' Opcode (Mode: %d)\n", size );
ms->ms_DecodeStatus = MSTAT_Error;
goto bailout;
}
}
// --
ms->ms_ArgEMode = 7;
ms->ms_ArgEReg = 4;
ms->ms_CurRegister = & ms->ms_SrcRegister;
M68k_EffectiveAddress( ms );
// --
ms->ms_ArgEMode = ( ms->ms_Opcode & 0x00380000 ) >> 19;
ms->ms_ArgEReg = ( ms->ms_Opcode & 0x00070000 ) >> 16;
ms->ms_CurRegister = & ms->ms_DstRegister;
M68k_EffectiveAddress( ms );
ms->ms_OpcodeSize = ms->ms_ArgSize;
// --
bailout:
return;
}