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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 
insn_length(unsigned char code)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 
is_known_insn(unsigned char * code)48 static inline int is_known_insn(unsigned char *code)
49 {
50 	return !!find_insn(code);
51 }
52 
53 #endif /* __ASM_S390_DIS_H__ */
54