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
  25 struct 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
  31 struct s390_insn {
  32         const char name[5];
  33         unsigned char opfrag;
  34         unsigned char format;
  35 };
  36
  37
  38 static inline int insn_length(unsigned char code)
  39 {
  40         return ((((int) code + 64) >> 7) + 1) << 1;
  41 }
  42
  43 void show_code(struct pt_regs *regs);
  44 void print_fn_code(unsigned char *code, unsigned long len);
  45 int insn_to_mnemonic(unsigned char *instruction, char *buf, unsigned int len);
  46 struct s390_insn *find_insn(unsigned char *code);
  47
  48 static inline int is_known_insn(unsigned char *code)
  49 {
  50         return !!find_insn(code);
  51 }
  52
  53 #endif /* __ASM_S390_DIS_H__ */