1*4882a593Smuzhiyun #ifndef _ASM_X86_INSN_EVAL_H 2*4882a593Smuzhiyun #define _ASM_X86_INSN_EVAL_H 3*4882a593Smuzhiyun /* 4*4882a593Smuzhiyun * A collection of utility functions for x86 instruction analysis to be 5*4882a593Smuzhiyun * used in a kernel context. Useful when, for instance, making sense 6*4882a593Smuzhiyun * of the registers indicated by operands. 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/compiler.h> 10*4882a593Smuzhiyun #include <linux/bug.h> 11*4882a593Smuzhiyun #include <linux/err.h> 12*4882a593Smuzhiyun #include <asm/ptrace.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun #define INSN_CODE_SEG_ADDR_SZ(params) ((params >> 4) & 0xf) 15*4882a593Smuzhiyun #define INSN_CODE_SEG_OPND_SZ(params) (params & 0xf) 16*4882a593Smuzhiyun #define INSN_CODE_SEG_PARAMS(oper_sz, addr_sz) (oper_sz | (addr_sz << 4)) 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun bool insn_has_rep_prefix(struct insn *insn); 19*4882a593Smuzhiyun void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs); 20*4882a593Smuzhiyun int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs); 21*4882a593Smuzhiyun int insn_get_modrm_reg_off(struct insn *insn, struct pt_regs *regs); 22*4882a593Smuzhiyun unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx); 23*4882a593Smuzhiyun int insn_get_code_seg_params(struct pt_regs *regs); 24*4882a593Smuzhiyun unsigned long insn_get_effective_ip(struct pt_regs *regs); 25*4882a593Smuzhiyun int insn_fetch_from_user(struct pt_regs *regs, 26*4882a593Smuzhiyun unsigned char buf[MAX_INSN_SIZE]); 27*4882a593Smuzhiyun int insn_fetch_from_user_inatomic(struct pt_regs *regs, 28*4882a593Smuzhiyun unsigned char buf[MAX_INSN_SIZE]); 29*4882a593Smuzhiyun bool insn_decode_from_regs(struct insn *insn, struct pt_regs *regs, 30*4882a593Smuzhiyun unsigned char buf[MAX_INSN_SIZE], int buf_size); 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #endif /* _ASM_X86_INSN_EVAL_H */ 33