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DOSBox-X
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DOSBox-X
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00001 /* 00002 * Copyright (C) 2002-2020 The DOSBox Team 00003 * 00004 * This program is free software; you can redistribute it and/or modify 00005 * it under the terms of the GNU General Public License as published by 00006 * the Free Software Foundation; either version 2 of the License, or 00007 * (at your option) any later version. 00008 * 00009 * This program is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 * GNU General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU General Public License along 00015 * with this program; if not, write to the Free Software Foundation, Inc., 00016 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00017 */ 00018 00019 /* Write the data from the opcode */ 00020 switch (inst.code.save) { 00021 /* Byte */ 00022 case S_C_Eb: 00023 inst_op1_b=inst.cond ? 1 : 0; 00024 case S_Eb: 00025 if (inst.rm<0xc0) SaveMb(inst.rm_eaa,inst_op1_b); 00026 else reg_8(inst.rm_eai)=inst_op1_b; 00027 break; 00028 case S_Gb: 00029 reg_8(inst.rm_index)=inst_op1_b; 00030 break; 00031 case S_EbGb: 00032 if (inst.rm<0xc0) SaveMb(inst.rm_eaa,inst_op1_b); 00033 else reg_8(inst.rm_eai)=inst_op1_b; 00034 reg_8(inst.rm_index)=inst_op2_b; 00035 break; 00036 /* Word */ 00037 case S_Ew: 00038 if (inst.rm<0xc0) SaveMw(inst.rm_eaa,inst_op1_w); 00039 else reg_16(inst.rm_eai)=inst_op1_w; 00040 break; 00041 case S_Gw: 00042 reg_16(inst.rm_index)=inst_op1_w; 00043 break; 00044 case S_EwGw: 00045 if (inst.rm<0xc0) SaveMw(inst.rm_eaa,inst_op1_w); 00046 else reg_16(inst.rm_eai)=inst_op1_w; 00047 reg_16(inst.rm_index)=inst_op2_w; 00048 break; 00049 /* Dword */ 00050 case S_Ed: 00051 if (inst.rm<0xc0) SaveMd(inst.rm_eaa,inst_op1_d); 00052 else reg_32(inst.rm_eai)=inst_op1_d; 00053 break; 00054 case S_EdMw: /* Special one 16 to memory, 32 zero extend to reg */ 00055 if (inst.rm<0xc0) SaveMw(inst.rm_eaa,inst_op1_w); 00056 else reg_32(inst.rm_eai)=inst_op1_d; 00057 break; 00058 case S_Gd: 00059 reg_32(inst.rm_index)=inst_op1_d; 00060 break; 00061 case S_EdGd: 00062 if (inst.rm<0xc0) SaveMd(inst.rm_eaa,inst_op1_d); 00063 else reg_32(inst.rm_eai)=inst_op1_d; 00064 reg_32(inst.rm_index)=inst_op2_d; 00065 break; 00066 00067 case S_REGb: 00068 reg_8(inst.code.extra)=inst_op1_b; 00069 break; 00070 case S_REGw: 00071 reg_16(inst.code.extra)=inst_op1_w; 00072 break; 00073 case S_REGd: 00074 reg_32(inst.code.extra)=inst_op1_d; 00075 break; 00076 case S_SEGm: 00077 if (CPU_SetSegGeneral((SegNames)inst.rm_index,inst_op1_w)) RunException(); 00078 break; 00079 case S_SEGGw: 00080 if (CPU_SetSegGeneral((SegNames)inst.code.extra,inst_op2_w)) RunException(); 00081 reg_16(inst.rm_index)=inst_op1_w; 00082 break; 00083 case S_SEGGd: 00084 if (CPU_SetSegGeneral((SegNames)inst.code.extra,inst_op2_w)) RunException(); 00085 reg_32(inst.rm_index)=inst_op1_d; 00086 break; 00087 case S_PUSHw: 00088 Push_16(inst_op1_w); 00089 break; 00090 case S_PUSHd: 00091 Push_32(inst_op1_d); 00092 break; 00093 00094 case S_C_AIPw: 00095 if (!inst.cond) goto nextopcode; 00096 case S_AIPw: 00097 SaveIP(); 00098 reg_eip+=inst_op1_d; 00099 reg_eip&=0xffff; 00100 continue; 00101 case S_C_AIPd: 00102 if (!inst.cond) goto nextopcode; 00103 case S_AIPd: 00104 SaveIP(); 00105 reg_eip+=inst_op1_d; 00106 continue; 00107 case S_IPIw: 00108 reg_esp+=Fetchw(); 00109 case S_IP: 00110 SaveIP(); 00111 reg_eip=inst_op1_d; 00112 continue; 00113 case 0: 00114 break; 00115 default: 00116 LOG(LOG_CPU,LOG_ERROR)("SAVE:Unhandled code %d entry %lx",inst.code.save,(unsigned long)inst.entry); 00117 }
1.8.0
