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New lazyflag testing and fillflags returns the flags

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1404
This commit is contained in:
Sjoerd van der Berg 2003-11-05 19:49:30 +00:00
parent b4753c5c62
commit 814ed9bef5
1 changed files with 20 additions and 11 deletions
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31
src/cpu/lazyflags.h
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@ -27,7 +27,7 @@ Bitu get_SF(void);
Bitu get_OF(void);
Bitu get_PF(void);
void FillFlags(void);
Bitu FillFlags(void);
#include "regs.h"
@ -80,6 +80,23 @@ extern LazyFlags lflags;
#define LoadOF SETFLAGBIT(OF,get_OF());
#define LoadAF SETFLAGBIT(AF,get_AF());
#define TFLG_O (get_OF())
#define TFLG_NO (!get_OF())
#define TFLG_B (get_CF())
#define TFLG_NB (!get_CF())
#define TFLG_Z (get_ZF())
#define TFLG_NZ (!get_ZF())
#define TFLG_BE (get_CF() || get_ZF())
#define TFLG_NBE (!get_CF() && !get_ZF())
#define TFLG_S (get_SF())
#define TFLG_NS (!get_SF())
#define TFLG_P (get_PF())
#define TFLG_NP (!get_PF())
#define TFLG_L ((get_SF()!=0) != (get_OF()!=0))
#define TFLG_NL ((get_SF()!=0) == (get_OF()!=0))
#define TFLG_LE (get_ZF() || ((get_SF()!=0) != (get_OF()!=0)))
#define TFLG_NLE (!get_ZF() && ((get_SF()!=0) == (get_OF()!=0)))
//Types of Flag changing instructions
enum {
t_UNKNOWN=0,
@ -102,8 +119,7 @@ enum {
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,
@ -111,11 +127,4 @@ enum {
t_LASTFLAG
};
INLINE void SetTypeCF(void) {
if (lflags.type!=t_CF) {
lflags.prev_type=lflags.type;
lflags.type=t_CF;
}
}
#endif
#endif