1#ifndef _ASM_X86_INSN_EVAL_H
2#define _ASM_X86_INSN_EVAL_H
3/*
4 * A collection of utility functions for x86 instruction analysis to be
5 * used in a kernel context. Useful when, for instance, making sense
6 * of the registers indicated by operands.
7 */
8
9#include <linux/compiler.h>
10#include <linux/bug.h>
11#include <linux/err.h>
12#include <asm/ptrace.h>
13
14#define INSN_CODE_SEG_ADDR_SZ(params) ((params >> 4) & 0xf)
15#define INSN_CODE_SEG_OPND_SZ(params) (params & 0xf)
16#define INSN_CODE_SEG_PARAMS(oper_sz, addr_sz) (oper_sz | (addr_sz << 4))
17
18void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs);
19int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs);
20unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx);
21int insn_get_code_seg_params(struct pt_regs *regs);
22
23#endif /* _ASM_X86_INSN_EVAL_H */
24