Initial submission of the PCem-Experimental source code.

2016-06-26 00:34:39 +02:00
parent 09d7c4384f
commit fd2a5bc9f5
610 changed files with 184352 additions and 0 deletions
--- a/src/x86.h
+++ b/src/x86.h
@@ -0,0 +1,108 @@
+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 rm,reg,mod,rmdat;
+
+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;