132542ee2SRicardo Neri #ifndef _ASM_X86_INSN_EVAL_H 232542ee2SRicardo Neri #define _ASM_X86_INSN_EVAL_H 332542ee2SRicardo Neri /* 432542ee2SRicardo Neri * A collection of utility functions for x86 instruction analysis to be 532542ee2SRicardo Neri * used in a kernel context. Useful when, for instance, making sense 632542ee2SRicardo Neri * of the registers indicated by operands. 732542ee2SRicardo Neri */ 832542ee2SRicardo Neri 932542ee2SRicardo Neri #include <linux/compiler.h> 1032542ee2SRicardo Neri #include <linux/bug.h> 1132542ee2SRicardo Neri #include <linux/err.h> 1232542ee2SRicardo Neri #include <asm/ptrace.h> 1332542ee2SRicardo Neri 144efea85fSRicardo Neri #define INSN_CODE_SEG_ADDR_SZ(params) ((params >> 4) & 0xf) 154efea85fSRicardo Neri #define INSN_CODE_SEG_OPND_SZ(params) (params & 0xf) 164efea85fSRicardo Neri #define INSN_CODE_SEG_PARAMS(oper_sz, addr_sz) (oper_sz | (addr_sz << 4)) 174efea85fSRicardo Neri 184b5305deSPeter Zijlstra int pt_regs_offset(struct pt_regs *regs, int regno); 194b5305deSPeter Zijlstra 205901781aSJoerg Roedel bool insn_has_rep_prefix(struct insn *insn); 2132542ee2SRicardo Neri void __user *insn_get_addr_ref(struct insn *insn, struct pt_regs *regs); 22e5e45f11SRicardo Neri int insn_get_modrm_rm_off(struct insn *insn, struct pt_regs *regs); 237af1bd82SJoerg Roedel int insn_get_modrm_reg_off(struct insn *insn, struct pt_regs *regs); 24d5ec1877SKirill A. Shutemov unsigned long *insn_get_modrm_reg_ptr(struct insn *insn, struct pt_regs *regs); 25bd5a410aSRicardo Neri unsigned long insn_get_seg_base(struct pt_regs *regs, int seg_reg_idx); 26e2a5dca7SBorislav Petkov int insn_get_code_seg_params(struct pt_regs *regs); 27b968e84bSPeter Zijlstra int insn_get_effective_ip(struct pt_regs *regs, unsigned long *ip); 28172b75e5SJoerg Roedel int insn_fetch_from_user(struct pt_regs *regs, 29172b75e5SJoerg Roedel unsigned char buf[MAX_INSN_SIZE]); 30bffe30ddSJoerg Roedel int insn_fetch_from_user_inatomic(struct pt_regs *regs, 31bffe30ddSJoerg Roedel unsigned char buf[MAX_INSN_SIZE]); 329e761296SBorislav Petkov bool insn_decode_from_regs(struct insn *insn, struct pt_regs *regs, 33172639d7SJoerg Roedel unsigned char buf[MAX_INSN_SIZE], int buf_size); 3432542ee2SRicardo Neri 35*72bb8f8cSJason A. Donenfeld enum insn_mmio_type { 36*72bb8f8cSJason A. Donenfeld INSN_MMIO_DECODE_FAILED, 37*72bb8f8cSJason A. Donenfeld INSN_MMIO_WRITE, 38*72bb8f8cSJason A. Donenfeld INSN_MMIO_WRITE_IMM, 39*72bb8f8cSJason A. Donenfeld INSN_MMIO_READ, 40*72bb8f8cSJason A. Donenfeld INSN_MMIO_READ_ZERO_EXTEND, 41*72bb8f8cSJason A. Donenfeld INSN_MMIO_READ_SIGN_EXTEND, 42*72bb8f8cSJason A. Donenfeld INSN_MMIO_MOVS, 4370a81f99SKirill A. Shutemov }; 4470a81f99SKirill A. Shutemov 45*72bb8f8cSJason A. Donenfeld enum insn_mmio_type insn_decode_mmio(struct insn *insn, int *bytes); 4670a81f99SKirill A. Shutemov 4732542ee2SRicardo Neri #endif /* _ASM_X86_INSN_EVAL_H */ 48