| #ifndef _ASM_KPROBES_H |
| #define _ASM_KPROBES_H |
| /* |
| * Kernel Probes (KProbes) |
| * include/asm-ia64/kprobes.h |
| * |
| * 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, 2002, 2004 |
| * Copyright (C) Intel Corporation, 2005 |
| * |
| * 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy |
| * <anil.s.keshavamurthy@intel.com> adapted from i386 |
| */ |
| #include <linux/types.h> |
| #include <linux/ptrace.h> |
| #include <asm/break.h> |
| |
| #define MAX_INSN_SIZE 16 |
| #define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6) |
| |
| typedef union cmp_inst { |
| struct { |
| unsigned long long qp : 6; |
| unsigned long long p1 : 6; |
| unsigned long long c : 1; |
| unsigned long long r2 : 7; |
| unsigned long long r3 : 7; |
| unsigned long long p2 : 6; |
| unsigned long long ta : 1; |
| unsigned long long x2 : 2; |
| unsigned long long tb : 1; |
| unsigned long long opcode : 4; |
| unsigned long long reserved : 23; |
| }f; |
| unsigned long long l; |
| } cmp_inst_t; |
| |
| struct kprobe; |
| |
| typedef struct _bundle { |
| struct { |
| unsigned long long template : 5; |
| unsigned long long slot0 : 41; |
| unsigned long long slot1_p0 : 64-46; |
| } quad0; |
| struct { |
| unsigned long long slot1_p1 : 41 - (64-46); |
| unsigned long long slot2 : 41; |
| } quad1; |
| } __attribute__((__aligned__(16))) bundle_t; |
| |
| #define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry |
| |
| #define ARCH_SUPPORTS_KRETPROBES |
| |
| #define SLOT0_OPCODE_SHIFT (37) |
| #define SLOT1_p1_OPCODE_SHIFT (37 - (64-46)) |
| #define SLOT2_OPCODE_SHIFT (37) |
| |
| #define INDIRECT_CALL_OPCODE (1) |
| #define IP_RELATIVE_CALL_OPCODE (5) |
| #define IP_RELATIVE_BRANCH_OPCODE (4) |
| #define IP_RELATIVE_PREDICT_OPCODE (7) |
| #define LONG_BRANCH_OPCODE (0xC) |
| #define LONG_CALL_OPCODE (0xD) |
| |
| typedef struct kprobe_opcode { |
| bundle_t bundle; |
| } kprobe_opcode_t; |
| |
| struct fnptr { |
| unsigned long ip; |
| unsigned long gp; |
| }; |
| |
| /* Architecture specific copy of original instruction*/ |
| struct arch_specific_insn { |
| /* copy of the instruction to be emulated */ |
| kprobe_opcode_t insn; |
| #define INST_FLAG_FIX_RELATIVE_IP_ADDR 1 |
| #define INST_FLAG_FIX_BRANCH_REG 2 |
| unsigned long inst_flag; |
| unsigned short target_br_reg; |
| }; |
| |
| /* ia64 does not need this */ |
| static inline void arch_copy_kprobe(struct kprobe *p) |
| { |
| } |
| |
| #ifdef CONFIG_KPROBES |
| extern int kprobe_exceptions_notify(struct notifier_block *self, |
| unsigned long val, void *data); |
| |
| /* ia64 does not need this */ |
| static inline void jprobe_return(void) |
| { |
| } |
| |
| #else /* !CONFIG_KPROBES */ |
| static inline int kprobe_exceptions_notify(struct notifier_block *self, |
| unsigned long val, void *data) |
| { |
| return 0; |
| } |
| #endif |
| #endif /* _ASM_KPROBES_H */ |