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/* NOTE: this header is included in op-i386.c where global register
variable are used. Care must be used when including glibc headers.
*/
#ifndef CPU_I386_H
#define CPU_I386_H
#include <setjmp.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 */
#define EXCP00_DIVZ 1
#define EXCP01_SSTP 2
#define EXCP02_NMI 3
#define EXCP03_INT3 4
#define EXCP04_INTO 5
#define EXCP05_BOUND 6
#define EXCP06_ILLOP 7
#define EXCP07_PREX 8
#define EXCP08_DBLE 9
#define EXCP09_XERR 10
#define EXCP0A_TSS 11
#define EXCP0B_NOSEG 12
#define EXCP0C_STACK 13
#define EXCP0D_GPF 14
#define EXCP0E_PAGE 15
#define EXCP10_COPR 17
#define EXCP11_ALGN 18
#define EXCP12_MCHK 19
#define EXCP_SIGNAL 256 /* async signal */
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_ADCB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
CC_OP_ADCW,
CC_OP_ADCL,
CC_OP_SUBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
CC_OP_SUBW,
CC_OP_SUBL,
CC_OP_SBBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
CC_OP_SBBW,
CC_OP_SBBL,
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_SRC = C */
CC_OP_INCW,
CC_OP_INCL,
CC_OP_DECB, /* modify all flags except, CC_DST = res, CC_SRC = C */
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_SARB, /* modify all flags, CC_DST = res, CC_SRC.lsb = C */
CC_OP_SARW,
CC_OP_SARL,
CC_OP_NB,
};
#ifdef __i386__
//#define USE_X86LDOUBLE
#endif
#ifdef USE_X86LDOUBLE
typedef long double CPU86_LDouble;
#else
typedef double CPU86_LDouble;
#endif
typedef struct CPUX86State {
/* standard registers */
uint32_t regs[8];
uint32_t pc; /* cs_case + eip value */
uint32_t eflags;
/* emulator internal eflags handling */
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];
/* FPU state */
unsigned int fpstt; /* top of stack index */
unsigned int fpus;
unsigned int fpuc;
uint8_t fptags[8]; /* 0 = valid, 1 = empty */
CPU86_LDouble fpregs[8];
/* segments */
uint32_t segs[6];
/* emulator internal variables */
CPU86_LDouble ft0;
/* exception handling */
jmp_buf jmp_env;
int exception_index;
} CPUX86State;
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 uint64_t ldq(void *ptr)
{
return *(uint64_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;
}
static inline void stq(void *ptr, uint64_t v)
{
*(uint64_t *)ptr = v;
}
/* float access */
static inline float ldfl(void *ptr)
{
return *(float *)ptr;
}
static inline double ldfq(void *ptr)
{
return *(double *)ptr;
}
static inline void stfl(void *ptr, float v)
{
*(float *)ptr = v;
}
static inline void stfq(void *ptr, double v)
{
*(double *)ptr = v;
}
#ifndef IN_OP_I386
void cpu_x86_outb(int addr, int val);
void cpu_x86_outw(int addr, int val);
void cpu_x86_outl(int addr, int val);
int cpu_x86_inb(int addr);
int cpu_x86_inw(int addr);
int cpu_x86_inl(int addr);
#endif
CPUX86State *cpu_x86_init(void);
int cpu_x86_exec(CPUX86State *s);
void cpu_x86_close(CPUX86State *s);
/* internal functions */
int cpu_x86_gen_code(uint8_t *gen_code_buf, int max_code_size,
int *gen_code_size_ptr, uint8_t *pc_start);
#endif /* CPU_I386_H */
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