108 lines
1.9 KiB
C
108 lines
1.9 KiB
C
|
uint16_t oldcs;
|
||
|
|
uint32_t oldpc;
|
||
|
|
extern uint32_t rmdat32;
|
||
|
|
int oldcpl;
|
||
|
|
|
||
|
|
extern int nmi_enable;
|
||
|
|
|
||
|
|
int tempc;
|
||
|
|
int cycles,output;
|
||
|
|
int ssegs;
|
||
|
|
int firstrepcycle;
|
||
|
|
|
||
|
|
uint32_t easeg,eaaddr,ealimit,ealimitw;
|
||
|
|
|
||
|
|
int skipnextprint;
|
||
|
|
int inhlt;
|
||
|
|
|
||
|
|
uint8_t opcode;
|
||
|
|
int ins,noint;
|
||
|
|
|
||
|
|
uint16_t lastcs,lastpc;
|
||
|
|
int timetolive,keyboardtimer;
|
||
|
|
|
||
|
|
#define setznp168 setznp16
|
||
|
|
|
||
|
|
#define getr8(r) ((r&4)?cpu_state.regs[r&3].b.h:cpu_state.regs[r&3].b.l)
|
||
|
|
#define getr16(r) cpu_state.regs[r].w
|
||
|
|
#define getr32(r) cpu_state.regs[r].l
|
||
|
|
|
||
|
|
#define setr8(r,v) if (r&4) cpu_state.regs[r&3].b.h=v; \
|
||
|
|
else cpu_state.regs[r&3].b.l=v;
|
||
|
|
#define setr16(r,v) cpu_state.regs[r].w=v
|
||
|
|
#define setr32(r,v) cpu_state.regs[r].l=v
|
||
|
|
|
||
|
|
uint8_t znptable8[256];
|
||
|
|
uint16_t znptable16[65536];
|
||
|
|
|
||
|
|
int use32;
|
||
|
|
int stack32;
|
||
|
|
|
||
|
|
#define fetchea() { rmdat=readmemb(cs+pc); pc++; \
|
||
|
|
reg=(rmdat>>3)&7; \
|
||
|
|
mod=(rmdat>>6)&3; \
|
||
|
|
rm=rmdat&7; \
|
||
|
|
if (mod!=3) fetcheal(); }
|
||
|
|
|
||
|
|
|
||
|
|
int optype;
|
||
|
|
#define JMP 1
|
||
|
|
#define CALL 2
|
||
|
|
#define IRET 3
|
||
|
|
#define OPTYPE_INT 4
|
||
|
|
|
||
|
|
uint32_t oxpc;
|
||
|
|
|
||
|
|
extern uint16_t *mod1add[2][8];
|
||
|
|
extern uint32_t *mod1seg[8];
|
||
|
|
|
||
|
|
|
||
|
|
#define IRQTEST ((flags&I_FLAG) && (pic.pend&~pic.mask) && !noint)
|
||
|
|
|
||
|
|
extern int cgate32;
|
||
|
|
|
||
|
|
|
||
|
|
extern uint32_t *eal_r, *eal_w;
|
||
|
|
|
||
|
|
|
||
|
|
extern uint32_t flags_zn;
|
||
|
|
extern uint8_t flags_p;
|
||
|
|
#define FLAG_N (flags_zn>>31)
|
||
|
|
#define FLAG_Z (flags_zn)
|
||
|
|
#define FLAG_P (znptable8[flags_p]&P_FLAG)
|
||
|
|
|
||
|
|
extern int gpf;
|
||
|
|
|
||
|
|
|
||
|
|
enum
|
||
|
|
{
|
||
|
|
ABRT_NONE = 0,
|
||
|
|
ABRT_GEN,
|
||
|
|
ABRT_TS = 0xA,
|
||
|
|
ABRT_NP = 0xB,
|
||
|
|
ABRT_SS = 0xC,
|
||
|
|
ABRT_GPF = 0xD,
|
||
|
|
ABRT_PF = 0xE
|
||
|
|
};
|
||
|
|
|
||
|
|
extern int abrt;
|
||
|
|
extern uint32_t abrt_error;
|
||
|
|
|
||
|
|
void x86_doabrt(int x86_abrt);
|
||
|
|
|
||
|
|
extern uint8_t opcode2;
|
||
|
|
|
||
|
|
extern uint16_t rds;
|
||
|
|
extern uint32_t rmdat32;
|
||
|
|
|
||
|
|
extern int inscounts[256];
|
||
|
|
|
||
|
|
void x86illegal();
|
||
|
|
|
||
|
|
void x86seg_reset();
|
||
|
|
void x86gpf(char *s, uint16_t error);
|
||
|
|
|
||
|
|
extern uint16_t zero;
|
||
|
|
|
||
|
|
extern int x86_was_reset;
|