#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 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 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 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); extern void flush_insn_slot(struct kprobe *p); #endif /* _ASM_KPROBES_H */