| #ifndef _ASM_S390_KPROBES_H | |
| #define _ASM_S390_KPROBES_H | |
| /* | |
| * Kernel Probes (KProbes) | |
| * | |
| * 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 IBM Corp. 2002, 2006 | |
| * | |
| * 2002-Oct Created by Vamsi Krishna S <vamsi_krishna@in.ibm.com> Kernel | |
| * Probes initial implementation ( includes suggestions from | |
| * Rusty Russell). | |
| * 2004-Nov Modified for PPC64 by Ananth N Mavinakayanahalli | |
| * <ananth@in.ibm.com> | |
| * 2005-Dec Used as a template for s390 by Mike Grundy | |
| * <grundym@us.ibm.com> | |
| */ | |
| #include <linux/types.h> | |
| #include <asm-generic/kprobes.h> | |
| #define BREAKPOINT_INSTRUCTION 0x0002 | |
| #define FIXUP_PSW_NORMAL 0x08 | |
| #define FIXUP_BRANCH_NOT_TAKEN 0x04 | |
| #define FIXUP_RETURN_REGISTER 0x02 | |
| #define FIXUP_NOT_REQUIRED 0x01 | |
| int probe_is_prohibited_opcode(u16 *insn); | |
| int probe_get_fixup_type(u16 *insn); | |
| int probe_is_insn_relative_long(u16 *insn); | |
| #ifdef CONFIG_KPROBES | |
| #include <linux/ptrace.h> | |
| #include <linux/percpu.h> | |
| #include <linux/sched/task_stack.h> | |
| #define __ARCH_WANT_KPROBES_INSN_SLOT | |
| struct pt_regs; | |
| struct kprobe; | |
| typedef u16 kprobe_opcode_t; | |
| /* Maximum instruction size is 3 (16bit) halfwords: */ | |
| #define MAX_INSN_SIZE 0x0003 | |
| #define MAX_STACK_SIZE 64 | |
| #define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \ | |
| (((unsigned long)task_stack_page(current)) + THREAD_SIZE - (ADDR))) \ | |
| ? (MAX_STACK_SIZE) \ | |
| : (((unsigned long)task_stack_page(current)) + THREAD_SIZE - (ADDR))) | |
| #define kretprobe_blacklist_size 0 | |
| #define KPROBE_SWAP_INST 0x10 | |
| /* Architecture specific copy of original instruction */ | |
| struct arch_specific_insn { | |
| /* copy of original instruction */ | |
| kprobe_opcode_t *insn; | |
| unsigned int is_ftrace_insn : 1; | |
| }; | |
| struct prev_kprobe { | |
| struct kprobe *kp; | |
| unsigned long status; | |
| }; | |
| /* per-cpu kprobe control block */ | |
| struct kprobe_ctlblk { | |
| unsigned long kprobe_status; | |
| unsigned long kprobe_saved_imask; | |
| unsigned long kprobe_saved_ctl[3]; | |
| struct prev_kprobe prev_kprobe; | |
| struct pt_regs jprobe_saved_regs; | |
| kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE]; | |
| }; | |
| void arch_remove_kprobe(struct kprobe *p); | |
| void kretprobe_trampoline(void); | |
| int kprobe_fault_handler(struct pt_regs *regs, int trapnr); | |
| int kprobe_exceptions_notify(struct notifier_block *self, | |
| unsigned long val, void *data); | |
| #define flush_insn_slot(p) do { } while (0) | |
| #endif /* CONFIG_KPROBES */ | |
| #endif /* _ASM_S390_KPROBES_H */ |