arch/x86/include/asm/insn-eval.h

   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
  18 void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs);
  19 int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs);
  20 unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx);
  21 char insn_get_code_seg_params(struct pt_regs *regs);
  22
  23 #endif /* _ASM_X86_INSN_EVAL_H */