diff options
Diffstat (limited to 'include/asm-powerpc/kprobes.h')
| -rw-r--r-- | include/asm-powerpc/kprobes.h | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/include/asm-powerpc/kprobes.h b/include/asm-powerpc/kprobes.h deleted file mode 100644 index d0e7701fa1f6..000000000000 --- a/include/asm-powerpc/kprobes.h +++ /dev/null | |||
| @@ -1,118 +0,0 @@ | |||
| 1 | #ifndef _ASM_POWERPC_KPROBES_H | ||
| 2 | #define _ASM_POWERPC_KPROBES_H | ||
| 3 | #ifdef __KERNEL__ | ||
| 4 | /* | ||
| 5 | * Kernel Probes (KProbes) | ||
| 6 | * | ||
| 7 | * This program is free software; you can redistribute it and/or modify | ||
| 8 | * it under the terms of the GNU General Public License as published by | ||
| 9 | * the Free Software Foundation; either version 2 of the License, or | ||
| 10 | * (at your option) any later version. | ||
| 11 | * | ||
| 12 | * This program is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 15 | * GNU General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License | ||
| 18 | * along with this program; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
| 20 | * | ||
| 21 | * Copyright (C) IBM Corporation, 2002, 2004 | ||
| 22 | * | ||
| 23 | * 2002-Oct Created by Vamsi Krishna S <vamsi_krishna@in.ibm.com> Kernel | ||
| 24 | * Probes initial implementation ( includes suggestions from | ||
| 25 | * Rusty Russell). | ||
| 26 | * 2004-Nov Modified for PPC64 by Ananth N Mavinakayanahalli | ||
| 27 | * <ananth@in.ibm.com> | ||
| 28 | */ | ||
| 29 | #include <linux/types.h> | ||
| 30 | #include <linux/ptrace.h> | ||
| 31 | #include <linux/percpu.h> | ||
| 32 | |||
| 33 | #define __ARCH_WANT_KPROBES_INSN_SLOT | ||
| 34 | |||
| 35 | struct pt_regs; | ||
| 36 | struct kprobe; | ||
| 37 | |||
| 38 | typedef unsigned int kprobe_opcode_t; | ||
| 39 | #define BREAKPOINT_INSTRUCTION 0x7fe00008 /* trap */ | ||
| 40 | #define MAX_INSN_SIZE 1 | ||
| 41 | |||
| 42 | #define IS_TW(instr) (((instr) & 0xfc0007fe) == 0x7c000008) | ||
| 43 | #define IS_TD(instr) (((instr) & 0xfc0007fe) == 0x7c000088) | ||
| 44 | #define IS_TDI(instr) (((instr) & 0xfc000000) == 0x08000000) | ||
| 45 | #define IS_TWI(instr) (((instr) & 0xfc000000) == 0x0c000000) | ||
| 46 | |||
| 47 | #ifdef CONFIG_PPC64 | ||
| 48 | /* | ||
| 49 | * 64bit powerpc uses function descriptors. | ||
| 50 | * Handle cases where: | ||
| 51 | * - User passes a <.symbol> or <module:.symbol> | ||
| 52 | * - User passes a <symbol> or <module:symbol> | ||
| 53 | * - User passes a non-existant symbol, kallsyms_lookup_name | ||
| 54 | * returns 0. Don't deref the NULL pointer in that case | ||
| 55 | */ | ||
| 56 | #define kprobe_lookup_name(name, addr) \ | ||
| 57 | { \ | ||
| 58 | addr = (kprobe_opcode_t *)kallsyms_lookup_name(name); \ | ||
| 59 | if (addr) { \ | ||
| 60 | char *colon; \ | ||
| 61 | if ((colon = strchr(name, ':')) != NULL) { \ | ||
| 62 | colon++; \ | ||
| 63 | if (*colon != '\0' && *colon != '.') \ | ||
| 64 | addr = *(kprobe_opcode_t **)addr; \ | ||
| 65 | } else if (name[0] != '.') \ | ||
| 66 | addr = *(kprobe_opcode_t **)addr; \ | ||
| 67 | } else { \ | ||
| 68 | char dot_name[KSYM_NAME_LEN]; \ | ||
| 69 | dot_name[0] = '.'; \ | ||
| 70 | dot_name[1] = '\0'; \ | ||
| 71 | strncat(dot_name, name, KSYM_NAME_LEN - 2); \ | ||
| 72 | addr = (kprobe_opcode_t *)kallsyms_lookup_name(dot_name); \ | ||
| 73 | } \ | ||
| 74 | } | ||
| 75 | |||
| 76 | #define is_trap(instr) (IS_TW(instr) || IS_TD(instr) || \ | ||
| 77 | IS_TWI(instr) || IS_TDI(instr)) | ||
| 78 | #else | ||
| 79 | /* Use stock kprobe_lookup_name since ppc32 doesn't use function descriptors */ | ||
| 80 | #define is_trap(instr) (IS_TW(instr) || IS_TWI(instr)) | ||
| 81 | #endif | ||
| 82 | |||
| 83 | #define flush_insn_slot(p) do { } while (0) | ||
| 84 | #define kretprobe_blacklist_size 0 | ||
| 85 | |||
| 86 | void kretprobe_trampoline(void); | ||
| 87 | extern void arch_remove_kprobe(struct kprobe *p); | ||
| 88 | |||
| 89 | /* Architecture specific copy of original instruction */ | ||
| 90 | struct arch_specific_insn { | ||
| 91 | /* copy of original instruction */ | ||
| 92 | kprobe_opcode_t *insn; | ||
| 93 | /* | ||
| 94 | * Set in kprobes code, initially to 0. If the instruction can be | ||
| 95 | * eumulated, this is set to 1, if not, to -1. | ||
| 96 | */ | ||
| 97 | int boostable; | ||
| 98 | }; | ||
| 99 | |||
| 100 | struct prev_kprobe { | ||
| 101 | struct kprobe *kp; | ||
| 102 | unsigned long status; | ||
| 103 | unsigned long saved_msr; | ||
| 104 | }; | ||
| 105 | |||
| 106 | /* per-cpu kprobe control block */ | ||
| 107 | struct kprobe_ctlblk { | ||
| 108 | unsigned long kprobe_status; | ||
| 109 | unsigned long kprobe_saved_msr; | ||
| 110 | struct pt_regs jprobe_saved_regs; | ||
| 111 | struct prev_kprobe prev_kprobe; | ||
| 112 | }; | ||
| 113 | |||
| 114 | extern int kprobe_exceptions_notify(struct notifier_block *self, | ||
| 115 | unsigned long val, void *data); | ||
| 116 | extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); | ||
| 117 | #endif /* __KERNEL__ */ | ||
| 118 | #endif /* _ASM_POWERPC_KPROBES_H */ | ||