diff options
Diffstat (limited to 'arch/s390/include/asm/kprobes.h')
| -rw-r--r-- | arch/s390/include/asm/kprobes.h | 55 |
1 files changed, 24 insertions, 31 deletions
diff --git a/arch/s390/include/asm/kprobes.h b/arch/s390/include/asm/kprobes.h index dcf6948a875c..01f1682a73b7 100644 --- a/arch/s390/include/asm/kprobes.h +++ b/arch/s390/include/asm/kprobes.h @@ -1,22 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ #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 @@ -28,36 +15,46 @@ * <grundym@us.ibm.com> */ #include <linux/types.h> +#include <asm/ctlreg.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; -#define BREAKPOINT_INSTRUCTION 0x0002 /* 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)current_thread_info()) + THREAD_SIZE - (ADDR))) \ + (((unsigned long)task_stack_page(current)) + THREAD_SIZE - (ADDR))) \ ? (MAX_STACK_SIZE) \ - : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) + : (((unsigned long)task_stack_page(current)) + THREAD_SIZE - (ADDR))) #define kretprobe_blacklist_size 0 -#define KPROBE_SWAP_INST 0x10 - -#define FIXUP_PSW_NORMAL 0x08 -#define FIXUP_BRANCH_NOT_TAKEN 0x04 -#define FIXUP_RETURN_REGISTER 0x02 -#define FIXUP_NOT_REQUIRED 0x01 - /* Architecture specific copy of original instruction */ struct arch_specific_insn { /* copy of original instruction */ - kprobe_opcode_t insn[MAX_INSN_SIZE]; + kprobe_opcode_t *insn; }; struct prev_kprobe { @@ -69,19 +66,15 @@ struct prev_kprobe { struct kprobe_ctlblk { unsigned long kprobe_status; unsigned long kprobe_saved_imask; - unsigned long kprobe_saved_ctl[3]; + struct ctlreg 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 */ |