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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 #ifndef DOSBOX_LAZYFLAGS_H 00020 #define DOSBOX_LAZYFLAGS_H 00021 00022 //Flag Handling 00023 Bit32u get_CF(void); 00024 Bit32u get_AF(void); 00025 Bit32u get_ZF(void); 00026 Bit32u get_SF(void); 00027 Bit32u get_OF(void); 00028 Bit32u get_PF(void); 00029 00030 Bitu FillFlags(void); 00031 void FillFlagsNoCFOF(void); 00032 void DestroyConditionFlags(void); 00033 00034 #ifndef DOSBOX_REGS_H 00035 #include "regs.h" 00036 #endif 00037 00038 struct LazyFlags { 00039 GenReg32 var1,var2,res; 00040 Bitu type; 00041 Bitu prev_type; 00042 Bit8u oldcf; 00043 }; 00044 00045 extern LazyFlags lfags; 00046 00047 #define lf_var1b lflags.var1.byte[BL_INDEX] 00048 #define lf_var2b lflags.var2.byte[BL_INDEX] 00049 #define lf_resb lflags.res.byte[BL_INDEX] 00050 00051 #define lf_var1w lflags.var1.word[W_INDEX] 00052 #define lf_var2w lflags.var2.word[W_INDEX] 00053 #define lf_resw lflags.res.word[W_INDEX] 00054 00055 #define lf_var1d lflags.var1.dword[DW_INDEX] 00056 #define lf_var2d lflags.var2.dword[DW_INDEX] 00057 #define lf_resd lflags.res.dword[DW_INDEX] 00058 00059 00060 extern LazyFlags lflags; 00061 00062 #define SETFLAGSb(FLAGB) \ 00063 { \ 00064 SETFLAGBIT(OF,get_OF()); \ 00065 lflags.type=t_UNKNOWN; \ 00066 CPU_SetFlags(FLAGB,FMASK_NORMAL & 0xff); \ 00067 } 00068 00069 #define SETFLAGSw(FLAGW) \ 00070 { \ 00071 lflags.type=t_UNKNOWN; \ 00072 CPU_SetFlagsw(FLAGW); \ 00073 } 00074 00075 #define SETFLAGSd(FLAGD) \ 00076 { \ 00077 lflags.type=t_UNKNOWN; \ 00078 CPU_SetFlagsd(FLAGD); \ 00079 } 00080 00081 #define LoadCF SETFLAGBIT(CF,get_CF()); 00082 #define LoadZF SETFLAGBIT(ZF,get_ZF()); 00083 #define LoadSF SETFLAGBIT(SF,get_SF()); 00084 #define LoadOF SETFLAGBIT(OF,get_OF()); 00085 #define LoadAF SETFLAGBIT(AF,get_AF()); 00086 00087 #define TFLG_O (get_OF()) 00088 #define TFLG_NO (!get_OF()) 00089 #define TFLG_B (get_CF()) 00090 #define TFLG_NB (!get_CF()) 00091 #define TFLG_Z (get_ZF()) 00092 #define TFLG_NZ (!get_ZF()) 00093 #define TFLG_BE (get_CF() || get_ZF()) 00094 #define TFLG_NBE (!get_CF() && !get_ZF()) 00095 #define TFLG_S (get_SF()) 00096 #define TFLG_NS (!get_SF()) 00097 #define TFLG_P (get_PF()) 00098 #define TFLG_NP (!get_PF()) 00099 #define TFLG_L ((get_SF()!=0) != (get_OF()!=0)) 00100 #define TFLG_NL ((get_SF()!=0) == (get_OF()!=0)) 00101 #define TFLG_LE (get_ZF() || ((get_SF()!=0) != (get_OF()!=0))) 00102 #define TFLG_NLE (!get_ZF() && ((get_SF()!=0) == (get_OF()!=0))) 00103 00104 //Types of Flag changing instructions 00105 enum { 00106 t_UNKNOWN=0, 00107 t_ADDb,t_ADDw,t_ADDd, 00108 t_ORb,t_ORw,t_ORd, 00109 t_ADCb,t_ADCw,t_ADCd, 00110 t_SBBb,t_SBBw,t_SBBd, 00111 t_ANDb,t_ANDw,t_ANDd, 00112 t_SUBb,t_SUBw,t_SUBd, 00113 t_XORb,t_XORw,t_XORd, 00114 t_CMPb,t_CMPw,t_CMPd, 00115 t_INCb,t_INCw,t_INCd, 00116 t_DECb,t_DECw,t_DECd, 00117 t_TESTb,t_TESTw,t_TESTd, 00118 t_SHLb,t_SHLw,t_SHLd, 00119 t_SHRb,t_SHRw,t_SHRd, 00120 t_SARb,t_SARw,t_SARd, 00121 t_ROLb,t_ROLw,t_ROLd, 00122 t_RORb,t_RORw,t_RORd, 00123 t_RCLb,t_RCLw,t_RCLd, 00124 t_RCRb,t_RCRw,t_RCRd, 00125 t_NEGb,t_NEGw,t_NEGd, 00126 00127 t_DSHLw,t_DSHLd, 00128 t_DSHRw,t_DSHRd, 00129 t_MUL,t_DIV, 00130 t_NOTDONE, 00131 t_LASTFLAG 00132 }; 00133 00134 #endif
1.8.0
