1ffa11abfe
Since we have an in-kernel disassembler we can make sure that there won't be any kprobes set on random data. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* Disassemble s390 instructions.
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*
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* Copyright IBM Corp. 2007
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
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*/
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#ifndef __ASM_S390_DIS_H__
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#define __ASM_S390_DIS_H__
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/* Type of operand */
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#define OPERAND_GPR 0x1 /* Operand printed as %rx */
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#define OPERAND_FPR 0x2 /* Operand printed as %fx */
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#define OPERAND_AR 0x4 /* Operand printed as %ax */
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#define OPERAND_CR 0x8 /* Operand printed as %cx */
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#define OPERAND_DISP 0x10 /* Operand printed as displacement */
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#define OPERAND_BASE 0x20 /* Operand printed as base register */
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#define OPERAND_INDEX 0x40 /* Operand printed as index register */
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#define OPERAND_PCREL 0x80 /* Operand printed as pc-relative symbol */
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#define OPERAND_SIGNED 0x100 /* Operand printed as signed value */
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#define OPERAND_LENGTH 0x200 /* Operand printed as length (+1) */
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struct s390_operand {
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int bits; /* The number of bits in the operand. */
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int shift; /* The number of bits to shift. */
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int flags; /* One bit syntax flags. */
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};
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struct s390_insn {
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const char name[5];
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unsigned char opfrag;
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unsigned char format;
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};
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static inline int insn_length(unsigned char code)
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{
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return ((((int) code + 64) >> 7) + 1) << 1;
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}
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void show_code(struct pt_regs *regs);
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void print_fn_code(unsigned char *code, unsigned long len);
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int insn_to_mnemonic(unsigned char *instruction, char *buf, unsigned int len);
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struct s390_insn *find_insn(unsigned char *code);
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static inline int is_known_insn(unsigned char *code)
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{
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return !!find_insn(code);
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}
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#endif /* __ASM_S390_DIS_H__ */
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