#ifndef _ASM_KPROBES_H #define _ASM_KPROBES_H /* * Kernel Probes (KProbes) * include/asm-x86_64/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 * * 2004-Oct Prasanna S Panchamukhi and Jim Keniston * kenistoj@us.ibm.com adopted from i386. */ #include #include struct pt_regs; typedef u8 kprobe_opcode_t; #define BREAKPOINT_INSTRUCTION 0xcc #define MAX_INSN_SIZE 15 #define MAX_STACK_SIZE 64 #define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \ (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \ ? (MAX_STACK_SIZE) \ : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) #define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry #define ARCH_SUPPORTS_KRETPROBES void kretprobe_trampoline(void); /* Architecture specific copy of original instruction*/ struct arch_specific_insn { /* copy of the original instruction */ kprobe_opcode_t *insn; }; /* trap3/1 are intr gates for kprobes. So, restore the status of IF, * if necessary, before executing the original int3/1 (trap) handler. */ static inline void restore_interrupts(struct pt_regs *regs) { if (regs->eflags & IF_MASK) local_irq_enable(); } extern int post_kprobe_handler(struct pt_regs *regs); extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); extern int kprobe_handler(struct pt_regs *regs); extern int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *data); #endif /* _ASM_KPROBES_H */