/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef _ASM_S390_KPROBES_H
#define _ASM_S390_KPROBES_H
/*
* Kernel Probes ( KProbes )
*
* 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 /ctlreg.h>
#include <asm -generic/kprobes.h>
#define BREAKPOINT_INSTRUCTION 0 x0002
#define FIXUP_PSW_NORMAL 0 x08
#define FIXUP_BRANCH_NOT_TAKEN 0 x04
#define FIXUP_RETURN_REGISTER 0 x02
#define FIXUP_NOT_REQUIRED 0 x01
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 0 x0003
#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
/* Architecture specific copy of original instruction */
struct arch_specific_insn {
/* copy of original instruction */
kprobe_opcode_t *insn;
};
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;
struct ctlreg kprobe_saved_ctl[3 ];
struct prev_kprobe prev_kprobe;
};
void arch_remove_kprobe(struct kprobe *p);
int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
#define flush_insn_slot(p) do { } while (0 )
#endif /* CONFIG_KPROBES */
#endif /* _ASM_S390_KPROBES_H */
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