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

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