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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_UPROBES_H
#define _ASM_UPROBES_H
/*
* User-space Probes (UProbes) for x86
*
* Copyright (C) IBM Corporation, 2008-2011
* Authors:
* Srikar Dronamraju
* Jim Keniston
*/
#include <linux/notifier.h>
typedef u8 uprobe_opcode_t;
#define MAX_UINSN_BYTES 16
#define UPROBE_XOL_SLOT_BYTES 128 /* to keep it cache aligned */
#define UPROBE_SWBP_INSN 0xcc
#define UPROBE_SWBP_INSN_SIZE 1
struct uprobe_xol_ops;
struct arch_uprobe {
union {
u8 insn[MAX_UINSN_BYTES];
u8 ixol[MAX_UINSN_BYTES];
};
const struct uprobe_xol_ops *ops;
union {
struct {
s32 offs;
u8 ilen;
u8 opc1;
} branch;
struct {
u8 fixups;
u8 ilen;
} defparam;
struct {
u8 reg_offset; /* to the start of pt_regs */
u8 ilen;
} push;
};
};
struct arch_uprobe_task {
#ifdef CONFIG_X86_64
unsigned long saved_scratch_register;
#endif
unsigned int saved_trap_nr;
unsigned int saved_tf;
};
#endif /* _ASM_UPROBES_H */
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