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New lazy flag header file and endian fixes for flags

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1378
This commit is contained in:
Sjoerd van der Berg 2003-10-26 19:00:47 +00:00
parent e92e17addd
commit 66df37b533
21 changed files with 614 additions and 3833 deletions
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45
src/cpu/lazyflags.h
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@ -16,6 +16,9 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined __LAZYFLAGS_H
#define __LAZYFLAG_H
//Flag Handling
Bitu get_CF(void);
Bitu get_AF(void);
@ -26,22 +29,48 @@ Bitu get_PF(void);
void FillFlags(void);
#include "regs.h"
struct LazyFlags {
GenReg32 var1,var2,res;
Bitu type;
Bitu prev_type;
Bitu oldcf;
};
extern LazyFlags lfags;
#define lf_var1b lflags.var1.byte[BL_INDEX]
#define lf_var2b lflags.var2.byte[BL_INDEX]
#define lf_resb lflags.res.byte[BL_INDEX]
#define lf_var1w lflags.var1.word[W_INDEX]
#define lf_var2w lflags.var2.word[W_INDEX]
#define lf_resw lflags.res.word[W_INDEX]
#define lf_var1d lflags.var1.dword[DW_INDEX]
#define lf_var2d lflags.var2.dword[DW_INDEX]
#define lf_resd lflags.res.dword[DW_INDEX]
extern LazyFlags lflags;
#define SETFLAGSb(FLAGB) \
{ \
SETFLAGBIT(OF,get_OF()); \
flags.type=t_UNKNOWN; \
CPU_SetFlags((flags.word&0xffffff00)|((FLAGB) & 0xff)); \
lflags.type=t_UNKNOWN; \
CPU_SetFlags((reg_flags&0xffffff00)|((FLAGB) & 0xff)); \
}
#define SETFLAGSw(FLAGW) \
{ \
flags.type=t_UNKNOWN; \
lflags.type=t_UNKNOWN; \
CPU_SetFlagsw(FLAGW); \
}
#define SETFLAGSd(FLAGD) \
{ \
flags.type=t_UNKNOWN; \
lflags.type=t_UNKNOWN; \
CPU_SetFlags(FLAGD); \
}
@ -82,3 +111,11 @@ enum {
t_LASTFLAG
};
INLINE void SetTypeCF(void) {
if (lflags.type!=t_CF) {
lflags.prev_type=lflags.type;
lflags.type=t_CF;
}
}
#endif