36 #define TRAP_FLAG 0x0100
37 #define INTERRUPT_FLAG 0x0200
38 #define DIRECTION_FLAG 0x0400
39 #define IOPL_FLAG_MASK 0x3000
40 #define NESTED_FLAG 0x4000
41 #define BYTE_FL 0x8000 /* Intel reserved! */
42 #define RF_FLAG 0x10000
43 #define VM_FLAG 0x20000
47 CC_OP_DYNAMIC, /* must use dynamic code to get cc_op */
48 CC_OP_EFLAGS, /* all cc are explicitely computed, CC_SRC = flags */
49 CC_OP_MUL, /* modify all flags, C, O = (CC_SRC != 0) */
51 CC_OP_ADDB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
55 CC_OP_SUBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
59 CC_OP_LOGICB, /* modify all flags, CC_DST = res */
63 CC_OP_INCB, /* modify all flags except, CC_DST = res */
67 CC_OP_DECB, /* modify all flags except, CC_DST = res */
71 CC_OP_SHLB, /* modify all flags, CC_DST = res, CC_SRC.lsb = C */
79 #define USE_X86LDOUBLE
83 typedef long double CPU86_LDouble;
85 typedef double CPU86_LDouble;
88 typedef struct CPU86State {
89 /* standard registers */
91 uint32_t pc; /* cs_case + eip value */
98 int32_t df; /* D flag : 1 if D = 0, -1 if D = 1 */
101 uint8_t *segs_base[6];
105 CPU86_LDouble fpregs[8];
106 uint8_t fptags[8]; /* 0 = valid, 1 = empty */
107 unsigned int fpstt; /* top of stack index */
111 /* emulator internal variables */
112 uint32_t t0; /* temporary t0 storage */
113 uint32_t t1; /* temporary t1 storage */
114 uint32_t a0; /* temporary a0 storage (address) */
118 static inline int ldub(void *ptr)
120 return *(uint8_t *)ptr;
123 static inline int ldsb(void *ptr)
125 return *(int8_t *)ptr;
128 static inline int lduw(void *ptr)
130 return *(uint16_t *)ptr;
133 static inline int ldsw(void *ptr)
135 return *(int16_t *)ptr;
138 static inline int ldl(void *ptr)
140 return *(uint32_t *)ptr;
143 static inline uint64_t ldq(void *ptr)
145 return *(uint64_t *)ptr;
148 static inline void stb(void *ptr, int v)
153 static inline void stw(void *ptr, int v)
155 *(uint16_t *)ptr = v;
158 static inline void stl(void *ptr, int v)
160 *(uint32_t *)ptr = v;
163 static inline void stq(void *ptr, int v)
165 *(uint64_t *)ptr = v;
170 static inline float ldfl(void *ptr)
172 return *(float *)ptr;
175 static inline double ldfq(void *ptr)
177 return *(double *)ptr;
180 static inline void stfl(void *ptr, float v)
185 static inline void stfq(void *ptr, double v)
191 void port_outb(int addr, int val);
192 void port_outw(int addr, int val);
193 void port_outl(int addr, int val);
194 int port_inb(int addr);
195 int port_inw(int addr);
196 int port_inl(int addr);
199 #endif /* CPU_I386_H */