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Removed lazy flag stuff

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1085
This commit is contained in:
Sjoerd van der Berg 2003-07-06 13:08:18 +00:00
parent 2b61bd2759
commit cbd33bfa95
2 changed files with 8 additions and 71 deletions
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78
include/cpu.h
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@ -37,37 +37,6 @@ extern CPU_Decoder * cpudecoder;
//CPU Stuff
void SetCPU16bit( );
//Types of Flag changing instructions
enum {
t_UNKNOWN=0,
t_ADDb,t_ADDw,t_ADDd,
t_ORb,t_ORw,t_ORd,
t_ADCb,t_ADCw,t_ADCd,
t_SBBb,t_SBBw,t_SBBd,
t_ANDb,t_ANDw,t_ANDd,
t_SUBb,t_SUBw,t_SUBd,
t_XORb,t_XORw,t_XORd,
t_CMPb,t_CMPw,t_CMPd,
t_INCb,t_INCw,t_INCd,
t_DECb,t_DECw,t_DECd,
t_TESTb,t_TESTw,t_TESTd,
t_SHLb,t_SHLw,t_SHLd,
t_SHRb,t_SHRw,t_SHRd,
t_SARb,t_SARw,t_SARd,
t_ROLb,t_ROLw,t_ROLd,
t_RORb,t_RORw,t_RORd,
t_RCLb,t_RCLw,t_RCLd,
t_RCRb,t_RCRw,t_RCRd,
t_NEGb,t_NEGw,t_NEGd,
t_CF,t_ZF,
t_DSHLw,t_DSHLd,
t_DSHRw,t_DSHRd,
t_MUL,t_DIV,
t_NOTDONE,
t_LASTFLAG
};
extern bool parity_lookup[256];
void CPU_LLDT(Bitu selector);
@ -110,51 +79,18 @@ Bitu CPU_Pop32(void);
void CPU_Push16(Bitu value);
void CPU_Push32(Bitu value);
//Flag Handling
Bitu get_CF(void);
Bitu get_AF(void);
Bitu get_ZF(void);
Bitu get_SF(void);
Bitu get_OF(void);
Bitu get_PF(void);
void CPU_SetFlags(Bitu word);
#define SETFLAGSb(FLAGB) \
{ \
SETFLAGBIT(OF,get_OF()); \
flags.type=t_UNKNOWN; \
flags.word&=0xffffff00;flags.word|=(FLAGB&0xff); \
}
INLINE void CPU_SetFlagsd(Bit32u word) {
CPU_SetFlags(word);
};
#define SETFLAGSw(FLAGW) \
{ \
flags.type=t_UNKNOWN; \
flags.word&=0xffff0000;flags.word|=(FLAGW&0xffff); \
}
INLINE void CPU_SetFlagsw(Bit16u word) {
CPU_SetFlags((flags.word&0xffff0000)|word);
};
#define SETFLAGSd(FLAGD) \
{ \
flags.type=t_UNKNOWN; \
flags.word=FLAGD; \
}
#define FILLFLAGS \
{ \
flags.word=(flags.word & ~FLAG_MASK) | \
(get_CF() ? FLAG_CF : 0 ) | \
(get_PF() ? FLAG_PF : 0 ) | \
(get_AF() ? FLAG_AF : 0 ) | \
(get_ZF() ? FLAG_ZF : 0 ) | \
(get_SF() ? FLAG_SF : 0 ) | \
(get_OF() ? FLAG_OF : 0 ); \
flags.type=t_UNKNOWN; \
}
#define LoadCF SETFLAGBIT(CF,get_CF());
#define LoadZF SETFLAGBIT(ZF,get_ZF());
#define LoadSF SETFLAGBIT(SF,get_SF());
#define LoadOF SETFLAGBIT(OF,get_OF());
#define LoadAF SETFLAGBIT(AF,get_AF());
// *********************************************************************
// Descriptor

1
include/regs.h
View file

@ -54,6 +54,7 @@ struct Flag_Info {
#define SETFLAGBIT(TYPE,TEST) if (TEST) flags.word|=FLAG_ ## TYPE; else flags.word&=~FLAG_ ## TYPE
#define GETFLAG(TYPE) (flags.word & FLAG_ ## TYPE)
#define GETFLAGBOOL(TYPE) ((flags.word & FLAG_ ## TYPE) ? true : false )
struct Segment {
Bit16u val;