cpu-i386.h
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#ifndef CPU_I386_H
#define CPU_I386_H
#define R_EAX 0
#define R_ECX 1
#define R_EDX 2
#define R_EBX 3
#define R_ESP 4
#define R_EBP 5
#define R_ESI 6
#define R_EDI 7
#define R_AL 0
#define R_CL 1
#define R_DL 2
#define R_BL 3
#define R_AH 4
#define R_CH 5
#define R_DH 6
#define R_BH 7
#define R_ES 0
#define R_CS 1
#define R_SS 2
#define R_DS 3
#define R_FS 4
#define R_GS 5
#define CC_C 0x0001
#define CC_P 0x0004
#define CC_A 0x0010
#define CC_Z 0x0040
#define CC_S 0x0080
#define CC_O 0x0800
#define TRAP_FLAG 0x0100
#define INTERRUPT_FLAG 0x0200
#define DIRECTION_FLAG 0x0400
#define IOPL_FLAG_MASK 0x3000
#define NESTED_FLAG 0x4000
#define BYTE_FL 0x8000 /* Intel reserved! */
#define RF_FLAG 0x10000
#define VM_FLAG 0x20000
/* AC 0x40000 */
enum {
CC_OP_DYNAMIC, /* must use dynamic code to get cc_op */
CC_OP_EFLAGS, /* all cc are explicitely computed, CC_SRC = flags */
CC_OP_MUL, /* modify all flags, C, O = (CC_SRC != 0) */
CC_OP_ADDB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
CC_OP_ADDW,
CC_OP_ADDL,
CC_OP_SUBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
CC_OP_SUBW,
CC_OP_SUBL,
CC_OP_LOGICB, /* modify all flags, CC_DST = res */
CC_OP_LOGICW,
CC_OP_LOGICL,
CC_OP_INCB, /* modify all flags except, CC_DST = res */
CC_OP_INCW,
CC_OP_INCL,
CC_OP_DECB, /* modify all flags except, CC_DST = res */
CC_OP_DECW,
CC_OP_DECL,
CC_OP_SHLB, /* modify all flags, CC_DST = res, CC_SRC.lsb = C */
CC_OP_SHLW,
CC_OP_SHLL,
CC_OP_NB,
};
typedef struct CPU86State {
/* standard registers */
uint32_t regs[8];
uint32_t pc; /* cs_case + eip value */
/* eflags handling */
uint32_t eflags;
uint32_t cc_src;
uint32_t cc_dst;
uint32_t cc_op;
int32_t df; /* D flag : 1 if D = 0, -1 if D = 1 */
/* segments */
uint8_t *segs_base[6];
uint32_t segs[6];
/* emulator internal variables */
uint32_t t0; /* temporary t0 storage */
uint32_t t1; /* temporary t1 storage */
uint32_t a0; /* temporary a0 storage (address) */
} CPU86State;
static inline int ldub(void *ptr)
{
return *(uint8_t *)ptr;
}
static inline int ldsb(void *ptr)
{
return *(int8_t *)ptr;
}
static inline int lduw(void *ptr)
{
return *(uint16_t *)ptr;
}
static inline int ldsw(void *ptr)
{
return *(int16_t *)ptr;
}
static inline int ldl(void *ptr)
{
return *(uint32_t *)ptr;
}
static inline void stb(void *ptr, int v)
{
*(uint8_t *)ptr = v;
}
static inline void stw(void *ptr, int v)
{
*(uint16_t *)ptr = v;
}
static inline void stl(void *ptr, int v)
{
*(uint32_t *)ptr = v;
}
void port_outb(int addr, int val);
void port_outw(int addr, int val);
void port_outl(int addr, int val);
int port_inb(int addr);
int port_inw(int addr);
int port_inl(int addr);
#endif /* CPU_I386_H */