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 CPUX86State {
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 */
115 static inline int ldub(void *ptr)
117 return *(uint8_t *)ptr;
120 static inline int ldsb(void *ptr)
122 return *(int8_t *)ptr;
125 static inline int lduw(void *ptr)
127 return *(uint16_t *)ptr;
130 static inline int ldsw(void *ptr)
132 return *(int16_t *)ptr;
135 static inline int ldl(void *ptr)
137 return *(uint32_t *)ptr;
140 static inline uint64_t ldq(void *ptr)
142 return *(uint64_t *)ptr;
145 static inline void stb(void *ptr, int v)
150 static inline void stw(void *ptr, int v)
152 *(uint16_t *)ptr = v;
155 static inline void stl(void *ptr, int v)
157 *(uint32_t *)ptr = v;
160 static inline void stq(void *ptr, int v)
162 *(uint64_t *)ptr = v;
167 static inline float ldfl(void *ptr)
169 return *(float *)ptr;
172 static inline double ldfq(void *ptr)
174 return *(double *)ptr;
177 static inline void stfl(void *ptr, float v)
182 static inline void stfq(void *ptr, double v)
188 void cpu_x86_outb(int addr, int val);
189 void cpu_x86_outw(int addr, int val);
190 void cpu_x86_outl(int addr, int val);
191 int cpu_x86_inb(int addr);
192 int cpu_x86_inw(int addr);
193 int cpu_x86_inl(int addr);
196 CPUX86State *cpu_x86_init(void);
197 int cpu_x86_exec(CPUX86State *s);
198 void cpu_x86_close(CPUX86State *s);
200 /* internal functions */
201 int cpu_x86_gen_code(uint8_t *gen_code_buf, int *gen_code_size_ptr,
204 #endif /* CPU_I386_H */