| Ananth N Mavinakayanahalli | 8b7b80b | 2012-08-23 21:31:32 +0000 | [diff] [blame] | 1 | #ifndef _ASM_UPROBES_H |
| 2 | #define _ASM_UPROBES_H |
| 3 | /* |
| 4 | * User-space Probes (UProbes) for powerpc |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | * |
| 20 | * Copyright IBM Corporation, 2007-2012 |
| 21 | * |
| 22 | * Adapted from the x86 port by Ananth N Mavinakayanahalli <ananth@in.ibm.com> |
| 23 | */ |
| 24 | |
| 25 | #include <linux/notifier.h> |
| 26 | #include <asm/probes.h> |
| 27 | |
| Ananth N Mavinakayanahalli | 28e1e58 | 2012-09-05 22:17:04 +0000 | [diff] [blame] | 28 | typedef ppc_opcode_t uprobe_opcode_t; |
| Ananth N Mavinakayanahalli | 8b7b80b | 2012-08-23 21:31:32 +0000 | [diff] [blame] | 29 | |
| 30 | #define MAX_UINSN_BYTES 4 |
| 31 | #define UPROBE_XOL_SLOT_BYTES (MAX_UINSN_BYTES) |
| 32 | |
| 33 | /* The following alias is needed for reference from arch-agnostic code */ |
| 34 | #define UPROBE_SWBP_INSN BREAKPOINT_INSTRUCTION |
| 35 | #define UPROBE_SWBP_INSN_SIZE 4 /* swbp insn size in bytes */ |
| 36 | |
| 37 | struct arch_uprobe { |
| 38 | union { |
| 39 | u8 insn[MAX_UINSN_BYTES]; |
| 40 | u32 ainsn; |
| 41 | }; |
| 42 | }; |
| 43 | |
| 44 | struct arch_uprobe_task { |
| 45 | unsigned long saved_trap_nr; |
| 46 | }; |
| 47 | |
| 48 | extern int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long addr); |
| 49 | extern int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs); |
| 50 | extern int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs); |
| 51 | extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk); |
| 52 | extern int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data); |
| 53 | extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs); |
| Anton Arapov | f15706b | 2013-04-03 18:00:34 +0200 | [diff] [blame] | 54 | extern unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr, struct pt_regs *regs); |
| Ananth N Mavinakayanahalli | 8b7b80b | 2012-08-23 21:31:32 +0000 | [diff] [blame] | 55 | #endif /* _ASM_UPROBES_H */ |