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New lazy flag header file

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1377
This commit is contained in:
Sjoerd van der Berg 2003-10-26 18:58:46 +00:00
parent 4f130819d6
commit e92e17addd
2 changed files with 8 additions and 28 deletions
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3
include/cpu.h
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@ -88,13 +88,12 @@ void CPU_Push32(Bitu value);
void CPU_SetFlags(Bitu word);
INLINE void CPU_SetFlagsd(Bit32u word) {
CPU_SetFlags(word);
};
INLINE void CPU_SetFlagsw(Bit16u word) {
CPU_SetFlags((flags.word&0xffff0000)|word);
CPU_SetFlags((cpu_regs.flags&0xffff0000)|word);
};

33
include/regs.h
View file

@ -21,19 +21,6 @@
#include <mem.h>
struct Flag_Info {
union {
Bit8u b;
Bit16u w;
Bit32u d;
} var1,var2,result;
Bitu type;
Bitu prev_type;
Bitu oldcf;
Bitu word;
};
#define FLAG_CF 0x00000001
#define FLAG_PF 0x00000004
#define FLAG_AF 0x00000010
@ -50,11 +37,10 @@ struct Flag_Info {
#define FLAG_NT 0x00004000
#define FLAG_VM 0x00020000
#define SETFLAGBIT(TYPE,TEST) if (TEST) reg_flags|=FLAG_ ## TYPE; else reg_flags&=~FLAG_ ## TYPE
#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 )
#define GETFLAG(TYPE) (reg_flags & FLAG_ ## TYPE)
#define GETFLAGBOOL(TYPE) ((reg_flags & FLAG_ ## TYPE) ? true : false )
struct Segment {
Bit16u val;
@ -91,17 +77,13 @@ union GenReg32 {
#endif
struct CPU_Regs {
GenReg32 regs[8],ip;
GenReg32 regs[8],ip;
Bitu flags;
};
extern Segments Segs;
extern Flag_Info flags;
extern CPU_Regs cpu_regs;
//#define SegPhys(index) Segs[index].phys
//#define SegValue(index) Segs[index].val
INLINE PhysPt SegPhys(SegNames index) {
return Segs.phys[index];
}
@ -109,7 +91,6 @@ INLINE PhysPt SegPhys(SegNames index) {
INLINE Bit16u SegValue(SegNames index) {
return Segs.val[index];
}
INLINE RealPt RealMakeSeg(SegNames index,Bit16u off) {
return RealMake(SegValue(index),off);
@ -121,7 +102,6 @@ INLINE void SegSet16(Bitu index,Bit16u val) {
Segs.phys[index]=val << 4;
}
enum {
REGI_AX, REGI_CX, REGI_DX, REGI_BX,
REGI_SP, REGI_BP, REGI_SI, REGI_DI
@ -140,7 +120,6 @@ enum {
#define reg_16(reg) (cpu_regs.regs[(reg)].word[W_INDEX])
#define reg_32(reg) (cpu_regs.regs[(reg)].dword[DW_INDEX])
#define reg_al cpu_regs.regs[REGI_AX].byte[BL_INDEX]
#define reg_ah cpu_regs.regs[REGI_AX].byte[BH_INDEX]
#define reg_ax cpu_regs.regs[REGI_AX].word[W_INDEX]
@ -176,5 +155,7 @@ enum {
#define reg_ip cpu_regs.ip.word[W_INDEX]
#define reg_eip cpu_regs.ip.dword[DW_INDEX]
#define reg_flags cpu_regs.flags
#endif