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kprobes.h
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kprobes.h
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#ifndef _ASM_KPROBES_H
#define _ASM_KPROBES_H
/*
* Kernel Probes (KProbes)
* include/asm-ia64/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
* Copyright (C) Intel Corporation, 2005
*
* 2005-Apr Rusty Lynch <[email protected]> and Anil S Keshavamurthy
* <[email protected]> adapted from i386
*/
#include <linux/types.h>
#include <linux/ptrace.h>
#include <linux/percpu.h>
#include <asm/break.h>
#define MAX_INSN_SIZE 16
#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6)
typedef union cmp_inst {
struct {
unsigned long long qp : 6;
unsigned long long p1 : 6;
unsigned long long c : 1;
unsigned long long r2 : 7;
unsigned long long r3 : 7;
unsigned long long p2 : 6;
unsigned long long ta : 1;
unsigned long long x2 : 2;
unsigned long long tb : 1;
unsigned long long opcode : 4;
unsigned long long reserved : 23;
}f;
unsigned long long l;
} cmp_inst_t;
struct kprobe;
typedef struct _bundle {
struct {
unsigned long long template : 5;
unsigned long long slot0 : 41;
unsigned long long slot1_p0 : 64-46;
} quad0;
struct {
unsigned long long slot1_p1 : 41 - (64-46);
unsigned long long slot2 : 41;
} quad1;
} __attribute__((__aligned__(16))) bundle_t;
struct prev_kprobe {
struct kprobe *kp;
unsigned long status;
};
#define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f)
/* per-cpu kprobe control block */
struct kprobe_ctlblk {
unsigned long kprobe_status;
struct pt_regs jprobe_saved_regs;
unsigned long jprobes_saved_stacked_regs[MAX_PARAM_RSE_SIZE];
unsigned long *bsp;
unsigned long cfm;
struct prev_kprobe prev_kprobe;
};
#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
#define ARCH_SUPPORTS_KRETPROBES
#define SLOT0_OPCODE_SHIFT (37)
#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46))
#define SLOT2_OPCODE_SHIFT (37)
#define INDIRECT_CALL_OPCODE (1)
#define IP_RELATIVE_CALL_OPCODE (5)
#define IP_RELATIVE_BRANCH_OPCODE (4)
#define IP_RELATIVE_PREDICT_OPCODE (7)
#define LONG_BRANCH_OPCODE (0xC)
#define LONG_CALL_OPCODE (0xD)
#define arch_remove_kprobe(p) do {} while (0)
typedef struct kprobe_opcode {
bundle_t bundle;
} kprobe_opcode_t;
struct fnptr {
unsigned long ip;
unsigned long gp;
};
/* Architecture specific copy of original instruction*/
struct arch_specific_insn {
/* copy of the instruction to be emulated */
kprobe_opcode_t insn;
#define INST_FLAG_FIX_RELATIVE_IP_ADDR 1
#define INST_FLAG_FIX_BRANCH_REG 2
#define INST_FLAG_BREAK_INST 4
unsigned long inst_flag;
unsigned short target_br_reg;
};
extern int kprobe_exceptions_notify(struct notifier_block *self,
unsigned long val, void *data);
/* ia64 does not need this */
static inline void jprobe_return(void)
{
}
extern void invalidate_stacked_regs(void);
extern void flush_register_stack(void);
#endif /* _ASM_KPROBES_H */