LXR linux/arch/s390/include/asm/dis.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Disassemble s390 instructions.
   4 *
   5 * Copyright IBM Corp. 2007
   6 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
   7 */
   8
   9#ifndef __ASM_S390_DIS_H__
  10#define __ASM_S390_DIS_H__
  11
  12/* Type of operand */
  13#define OPERAND_GPR     0x1     /* Operand printed as %rx */
  14#define OPERAND_FPR     0x2     /* Operand printed as %fx */
  15#define OPERAND_AR      0x4     /* Operand printed as %ax */
  16#define OPERAND_CR      0x8     /* Operand printed as %cx */
  17#define OPERAND_VR      0x10    /* Operand printed as %vx */
  18#define OPERAND_DISP    0x20    /* Operand printed as displacement */
  19#define OPERAND_BASE    0x40    /* Operand printed as base register */
  20#define OPERAND_INDEX   0x80    /* Operand printed as index register */
  21#define OPERAND_PCREL   0x100   /* Operand printed as pc-relative symbol */
  22#define OPERAND_SIGNED  0x200   /* Operand printed as signed value */
  23#define OPERAND_LENGTH  0x400   /* Operand printed as length (+1) */
  24
  25
  26struct s390_operand {
  27        int bits;               /* The number of bits in the operand. */
  28        int shift;              /* The number of bits to shift. */
  29        int flags;              /* One bit syntax flags. */
  30};
  31
  32struct s390_insn {
  33        const char name[5];
  34        unsigned char opfrag;
  35        unsigned char format;
  36};
  37
  38
  39static inline int insn_length(unsigned char code)
  40{
  41        return ((((int) code + 64) >> 7) + 1) << 1;
  42}
  43
  44struct pt_regs;
  45
  46void show_code(struct pt_regs *regs);
  47void print_fn_code(unsigned char *code, unsigned long len);
  48int insn_to_mnemonic(unsigned char *instruction, char *buf, unsigned int len);
  49struct s390_insn *find_insn(unsigned char *code);
  50
  51static inline int is_known_insn(unsigned char *code)
  52{
  53        return !!find_insn(code);
  54}
  55
  56#endif /* __ASM_S390_DIS_H__ */
  57