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97 lines
2.6 KiB
97 lines
2.6 KiB
/* |
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* Kernel Probes (KProbes) |
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* include/asm-mips/kprobes.h |
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* |
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* Copyright 2006 Sony Corp. |
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* Copyright 2010 Cavium Networks |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; version 2 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#ifndef _ASM_KPROBES_H |
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#define _ASM_KPROBES_H |
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#include <linux/ptrace.h> |
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#include <linux/types.h> |
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#include <asm/cacheflush.h> |
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#include <asm/kdebug.h> |
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#include <asm/inst.h> |
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#define __ARCH_WANT_KPROBES_INSN_SLOT |
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struct kprobe; |
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struct pt_regs; |
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typedef union mips_instruction kprobe_opcode_t; |
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#define MAX_INSN_SIZE 2 |
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#define flush_insn_slot(p) \ |
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do { \ |
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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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} while (0) |
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#define kretprobe_blacklist_size 0 |
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void arch_remove_kprobe(struct kprobe *p); |
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/* Architecture specific copy of original instruction*/ |
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struct arch_specific_insn { |
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/* copy of the original instruction */ |
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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 old_SR; |
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unsigned long saved_SR; |
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unsigned long saved_epc; |
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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 - 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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#define SKIP_DELAYSLOT 0x0001 |
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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_old_SR; |
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unsigned long kprobe_saved_SR; |
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unsigned long kprobe_saved_epc; |
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unsigned long jprobe_saved_sp; |
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struct pt_regs jprobe_saved_regs; |
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/* Per-thread fields, used while emulating branches */ |
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unsigned long flags; |
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unsigned long target_epc; |
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u8 jprobes_stack[MAX_JPROBES_STACK_SIZE]; |
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struct prev_kprobe prev_kprobe; |
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}; |
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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_KPROBES_H */
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