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some FPU added :)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@81
This commit is contained in:
Felix Jakschitsch 2002-07-28 14:51:12 +00:00
parent 42e5d0b779
commit 5f69f14962
8 changed files with 359 additions and 27 deletions
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25
include/regs.h
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@ -35,6 +35,23 @@ struct Flag_Info {
bool oldcf;
};
struct FPU_Flag_Info {
struct {
Real64 r;
Bit8u tag;
} var1,var2, result;
struct {
bool bf,c3,c2,c1,c0,ir,sf,pf,uf,of,zf,df,in;
Bit8s tos;
} sw;
struct {
bool ic,ie,sf,pf,uf,of,zf,df,in;
Bit8u rc,pc;
} cw;
Bitu type;
Bitu prev_type;
};
struct Segment {
@ -51,6 +68,7 @@ enum { cs=0,ds,es,fs,gs,ss};
extern Segment Segs[6];
extern Flag_Info flags;
extern FPU_Flag_Info fpu_flags;
//extern Regs regs;
void SetSegment_16(Bit32u seg,Bit16u val);
@ -66,6 +84,13 @@ struct CPU_Regs {
} ax,bx,cx,dx,si,di,sp,bp,ip;
};
struct FPU_Regs {
struct {
Real64 r;
Bit8u tag;
} st[8];
};
extern CPU_Regs cpu_regs;
#define reg_al cpu_regs.ax.b.l