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kernel/linux-rt-4.4.41/arch/x86/include/asm/uprobes.h 1.57 KB
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  #ifndef _ASM_UPROBES_H
  #define _ASM_UPROBES_H
  /*
   * User-space Probes (UProbes) for x86
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
   *
   * Copyright (C) IBM Corporation, 2008-2011
   * Authors:
   *	Srikar Dronamraju
   *	Jim Keniston
   */
  
  #include <linux/notifier.h>
  
  typedef u8 uprobe_opcode_t;
  
  #define MAX_UINSN_BYTES			  16
  #define UPROBE_XOL_SLOT_BYTES		 128	/* to keep it cache aligned */
  
  #define UPROBE_SWBP_INSN		0xcc
  #define UPROBE_SWBP_INSN_SIZE		   1
  
  struct uprobe_xol_ops;
  
  struct arch_uprobe {
  	union {
  		u8			insn[MAX_UINSN_BYTES];
  		u8			ixol[MAX_UINSN_BYTES];
  	};
  
  	const struct uprobe_xol_ops	*ops;
  
  	union {
  		struct {
  			s32	offs;
  			u8	ilen;
  			u8	opc1;
  		}			branch;
  		struct {
  			u8	fixups;
  			u8	ilen;
  		} 			defparam;
  	};
  };
  
  struct arch_uprobe_task {
  #ifdef CONFIG_X86_64
  	unsigned long			saved_scratch_register;
  #endif
  	unsigned int			saved_trap_nr;
  	unsigned int			saved_tf;
  };
  
  #endif	/* _ASM_UPROBES_H */