9e367d8592
AFAICT now that jprobe.entry is a void *, JPROBE_ENTRY doesn't do anything useful - so remove it .. I've left a do-nothing version so that out-of-tree jprobes code will still compile without modifications. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
#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 <rusty.lynch@intel.com> and Anil S Keshavamurthy
|
|
* <anil.s.keshavamurthy@intel.com> adapted from i386
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/percpu.h>
|
|
#include <asm/break.h>
|
|
|
|
#define __ARCH_WANT_KPROBES_INSN_SLOT
|
|
#define MAX_INSN_SIZE 1
|
|
#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 */
|
|
#define ARCH_PREV_KPROBE_SZ 2
|
|
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;
|
|
atomic_t prev_kprobe_index;
|
|
struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ];
|
|
};
|
|
|
|
#define ARCH_SUPPORTS_KRETPROBES
|
|
#define ARCH_INACTIVE_KPROBE_COUNT 1
|
|
|
|
#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 flush_insn_slot(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;
|
|
unsigned short slot;
|
|
};
|
|
|
|
extern int kprobes_fault_handler(struct pt_regs *regs, int trapnr);
|
|
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);
|
|
extern void arch_remove_kprobe(struct kprobe *p);
|
|
|
|
#endif /* _ASM_KPROBES_H */
|