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arch
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powerpc
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include
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asm
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uprobes.h

uprobes.h 2.0 KB
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  1. #ifndef _ASM_UPROBES_H
    2. 

  2. #define _ASM_UPROBES_H
    3. 

  3. /*
    4. 

  4.  * User-space Probes (UProbes) for powerpc
    5. 

  5.  *
    6. 

  6.  * This program is free software; you can redistribute it and/or modify
    7. 

  7.  * it under the terms of the GNU General Public License as published by
    8. 

  8.  * the Free Software Foundation; either version 2 of the License, or
    9. 

  9.  * (at your option) any later version.
    10. 

  10.  *
    11. 

  11.  * This program is distributed in the hope that it will be useful,
    12. 

  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    13. 

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14. 

  14.  * GNU General Public License for more details.
    15. 

  15.  *
    16. 

  16.  * You should have received a copy of the GNU General Public License
    17. 

  17.  * along with this program; if not, write to the Free Software
    18. 

  18.  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
    19. 

  19.  *
    20. 

  20.  * Copyright IBM Corporation, 2007-2012
    21. 

  21.  *
    22. 

  22.  * Adapted from the x86 port by Ananth N Mavinakayanahalli <ananth@in.ibm.com>
    23. 

  23.  */
    24. 

  24. 

  25. #include <linux/notifier.h>
    26. 

  26. #include <asm/probes.h>
    27. 

  27. 

  28. typedef ppc_opcode_t uprobe_opcode_t;
    29. 

  29. 

  30. #define MAX_UINSN_BYTES		4
    31. 

  31. #define UPROBE_XOL_SLOT_BYTES	(MAX_UINSN_BYTES)
    32. 

  32. 

  33. /* The following alias is needed for reference from arch-agnostic code */
    34. 

  34. #define UPROBE_SWBP_INSN	BREAKPOINT_INSTRUCTION
    35. 

  35. #define UPROBE_SWBP_INSN_SIZE	4 /* swbp insn size in bytes */
    36. 

  36. 

  37. struct arch_uprobe {
    38. 

  38. 	union {
    39. 

  39. 		u8	insn[MAX_UINSN_BYTES];
    40. 

  40. 		u32	ainsn;
    41. 

  41. 	};
    42. 

  42. };
    43. 

  43. 

  44. struct arch_uprobe_task {
    45. 

  45. 	unsigned long	saved_trap_nr;
    46. 

  46. };
    47. 

  47. 

  48. extern int  arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long addr);
    49. 

  49. extern int  arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
    50. 

  50. extern int  arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
    51. 

  51. extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
    52. 

  52. extern int  arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data);
    53. 

  53. extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs);
    54. 

  54. extern unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr, struct pt_regs *regs);
    55. 

  55. #endif	/* _ASM_UPROBES_H */
    56.