insn.h File Reference

#include <asm/inat.h>

Go to the source code of this file.

Data Structures
struct	insn_field
struct	insn

Macros
#define	MAX_INSN_SIZE   16
#define	X86_MODRM_MOD(modrm)   (((modrm) & 0xc0) >> 6)
#define	X86_MODRM_REG(modrm)   (((modrm) & 0x38) >> 3)
#define	X86_MODRM_RM(modrm)   ((modrm) & 0x07)
#define	X86_SIB_SCALE(sib)   (((sib) & 0xc0) >> 6)
#define	X86_SIB_INDEX(sib)   (((sib) & 0x38) >> 3)
#define	X86_SIB_BASE(sib)   ((sib) & 0x07)
#define	X86_REX_W(rex)   ((rex) & 8)
#define	X86_REX_R(rex)   ((rex) & 4)
#define	X86_REX_X(rex)   ((rex) & 2)
#define	X86_REX_B(rex)   ((rex) & 1)
#define	X86_VEX_W(vex)   ((vex) & 0x80) /* VEX3 Byte2 */
#define	X86_VEX_R(vex)   ((vex) & 0x80) /* VEX2/3 Byte1 */
#define	X86_VEX_X(vex)   ((vex) & 0x40) /* VEX3 Byte1 */
#define	X86_VEX_B(vex)   ((vex) & 0x20) /* VEX3 Byte1 */
#define	X86_VEX_L(vex)   ((vex) & 0x04) /* VEX3 Byte2, VEX2 Byte1 */
#define	X86_VEX3_M(vex)   ((vex) & 0x1f) /* VEX3 Byte1 */
#define	X86_VEX2_M   1 /* VEX2.M always 1 */
#define	X86_VEX_V(vex)   (((vex) & 0x78) >> 3) /* VEX3 Byte2, VEX2 Byte1 */
#define	X86_VEX_P(vex)   ((vex) & 0x03) /* VEX3 Byte2, VEX2 Byte1 */
#define	X86_VEX_M_MAX   0x1f /* VEX3.M Maximum value */

Functions
void	insn_init (struct insn *insn, const void *kaddr, int x86_64)
void	insn_get_prefixes (struct insn *insn)
void	insn_get_opcode (struct insn *insn)
void	insn_get_modrm (struct insn *insn)
void	insn_get_sib (struct insn *insn)
void	insn_get_displacement (struct insn *insn)
void	insn_get_immediate (struct insn *insn)
void	insn_get_length (struct insn *insn)
int	insn_rip_relative (struct insn *insn)

Macro Definition Documentation

#define MAX_INSN_SIZE   16

Definition at line 71 of file insn.h.

#define X86_MODRM_MOD

(

modrm

)

(((modrm) & 0xc0) >> 6)

Definition at line 73 of file insn.h.

#define X86_MODRM_REG

(

modrm

)

(((modrm) & 0x38) >> 3)

Definition at line 74 of file insn.h.

#define X86_MODRM_RM

(

modrm

)

((modrm) & 0x07)

Definition at line 75 of file insn.h.

#define X86_REX_B

(

rex

)

((rex) & 1)

Definition at line 84 of file insn.h.

#define X86_REX_R

(

rex

)

((rex) & 4)

Definition at line 82 of file insn.h.

#define X86_REX_W

(

rex

)

((rex) & 8)

Definition at line 81 of file insn.h.

#define X86_REX_X

(

rex

)

((rex) & 2)

Definition at line 83 of file insn.h.

#define X86_SIB_BASE

(

sib

)

((sib) & 0x07)

Definition at line 79 of file insn.h.

#define X86_SIB_INDEX

(

sib

)

(((sib) & 0x38) >> 3)

Definition at line 78 of file insn.h.

#define X86_SIB_SCALE

(

sib

)

(((sib) & 0xc0) >> 6)

Definition at line 77 of file insn.h.

#define X86_VEX2_M   1 /* VEX2.M always 1 */

Definition at line 94 of file insn.h.

#define X86_VEX3_M

(

vex

)

((vex) & 0x1f) /* VEX3 Byte1 */

Definition at line 93 of file insn.h.

#define X86_VEX_B

(

vex

)

((vex) & 0x20) /* VEX3 Byte1 */

Definition at line 90 of file insn.h.

#define X86_VEX_L

(

vex

)

((vex) & 0x04) /* VEX3 Byte2, VEX2 Byte1 */

Definition at line 91 of file insn.h.

#define X86_VEX_M_MAX   0x1f /* VEX3.M Maximum value */

Definition at line 97 of file insn.h.

#define X86_VEX_P

(

vex

)

((vex) & 0x03) /* VEX3 Byte2, VEX2 Byte1 */

Definition at line 96 of file insn.h.

#define X86_VEX_R

(

vex

)

((vex) & 0x80) /* VEX2/3 Byte1 */

Definition at line 88 of file insn.h.

#define X86_VEX_V

(

vex

)

(((vex) & 0x78) >> 3) /* VEX3 Byte2, VEX2 Byte1 */

Definition at line 95 of file insn.h.

#define X86_VEX_W

(

vex

)

((vex) & 0x80) /* VEX3 Byte2 */

Definition at line 87 of file insn.h.

#define X86_VEX_X

(

vex

)

((vex) & 0x40) /* VEX3 Byte1 */

Definition at line 89 of file insn.h.

Function Documentation

void insn_get_displacement

(

struct insn *

insn

)

insn_get_displacement() - Get the displacement of instruction : &struct insn containing instruction

If necessary, first collects the instruction up to and including the SIB byte. Displacement value is sign-expanded.

Definition at line 331 of file insn.c.

void insn_get_immediate

(

struct insn *

insn

)

insn_get_immediate() - Get the immediates of instruction : &struct insn containing instruction

If necessary, first collects the instruction up to and including the displacement bytes. Basically, most of immediates are sign-expanded. Unsigned-value can be get by bit masking with ((1 << (nbytes * 8)) - 1)

Definition at line 502 of file insn.c.

void insn_get_length

(

struct insn *

insn

)

insn_get_length() - Get the length of instruction : &struct insn containing instruction

If necessary, first collects the instruction up to and including the immediates bytes.

Definition at line 572 of file insn.c.

void insn_get_modrm

(

struct insn *

insn

)

insn_get_modrm - collect ModRM byte, if any : &struct insn containing instruction

Populates ->modrm and updates ->next_byte to point past the ModRM byte, if any. If necessary, first collects the preceding bytes (prefixes and opcode(s)). No effect if ->modrm.got is already 1.

Definition at line 240 of file insn.c.

void insn_get_opcode

(

struct insn *

insn

)

insn_get_opcode - collect opcode(s) : &struct insn containing instruction

Populates ->opcode, updates ->next_byte to point past the opcode byte(s), and set ->attr (except for groups). If necessary, first collects any preceding (prefix) bytes. Sets ->opcode.value = opcode1. No effect if ->opcode.got is already 1.

Definition at line 189 of file insn.c.

void insn_get_prefixes

(

struct insn *

insn

)

insn_get_prefixes - scan x86 instruction prefix bytes : &struct insn containing instruction

Populates the ->prefixes bitmap, and updates ->next_byte to point to the (first) opcode. No effect if ->prefixes.got is already set.

Definition at line 74 of file insn.c.

void insn_get_sib

(

struct insn *

insn

)

insn_get_sib() - Get the SIB byte of instruction : &struct insn containing instruction

If necessary, first collects the instruction up to and including the ModRM byte.

Definition at line 300 of file insn.c.

void insn_init	(	struct insn *	insn,
		const void *	kaddr,
		int	x86_64
	)

insn_init() - initialize struct insn : &struct insn to be initialized : address (in kernel memory) of instruction (or copy thereof) : !0 for 64-bit kernel or 64-bit app

Definition at line 53 of file insn.c.

int insn_rip_relative

(

struct insn *

insn

)

insn_rip_relative() - Does instruction use RIP-relative addressing mode? : &struct insn containing instruction

If necessary, first collects the instruction up to and including the ModRM byte. No effect if ->x86_64 is 0.

Definition at line 278 of file insn.c.