3fa17c395b
This change includes support for Kprobes, Jprobes and Return Probes. Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Tony Lu <zlu@tilera.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
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* arch/tile/include/asm/kprobes.h
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*
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* Copyright 2012 Tilera Corporation. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, version 2.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for
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* more details.
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*/
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#ifndef _ASM_TILE_KPROBES_H
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#define _ASM_TILE_KPROBES_H
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#include <linux/types.h>
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#include <linux/ptrace.h>
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#include <linux/percpu.h>
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#include <arch/opcode.h>
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#define __ARCH_WANT_KPROBES_INSN_SLOT
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#define MAX_INSN_SIZE 2
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#define kretprobe_blacklist_size 0
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typedef tile_bundle_bits kprobe_opcode_t;
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#define flush_insn_slot(p) \
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flush_icache_range((unsigned long)p->addr, \
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(unsigned long)p->addr + \
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(MAX_INSN_SIZE * sizeof(kprobe_opcode_t)))
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struct kprobe;
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/* Architecture specific copy of original instruction. */
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struct arch_specific_insn {
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kprobe_opcode_t *insn;
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};
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struct prev_kprobe {
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struct kprobe *kp;
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unsigned long status;
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unsigned long saved_pc;
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};
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#define MAX_JPROBES_STACK_SIZE 128
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#define MAX_JPROBES_STACK_ADDR \
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(((unsigned long)current_thread_info()) + THREAD_SIZE - 32 \
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- sizeof(struct pt_regs))
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#define MIN_JPROBES_STACK_SIZE(ADDR) \
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((((ADDR) + MAX_JPROBES_STACK_SIZE) > MAX_JPROBES_STACK_ADDR) \
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? MAX_JPROBES_STACK_ADDR - (ADDR) \
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: MAX_JPROBES_STACK_SIZE)
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/* per-cpu kprobe control block. */
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struct kprobe_ctlblk {
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unsigned long kprobe_status;
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unsigned long kprobe_saved_pc;
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unsigned long jprobe_saved_sp;
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struct prev_kprobe prev_kprobe;
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struct pt_regs jprobe_saved_regs;
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char jprobes_stack[MAX_JPROBES_STACK_SIZE];
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};
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extern tile_bundle_bits breakpoint2_insn;
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extern tile_bundle_bits breakpoint_insn;
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void arch_remove_kprobe(struct kprobe *);
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extern int kprobe_exceptions_notify(struct notifier_block *self,
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unsigned long val, void *data);
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#endif /* _ASM_TILE_KPROBES_H */
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