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Because the arm64 calling standard allows stacked function arguments to be anywhere in the stack frame, do not attempt to duplicate the stack frame for jprobes handler functions. Documentation changes to describe this issue have been broken out into a separate patch in order to simultaneously address them in other architecture(s). Signed-off-by: David A. Long <dave.long@linaro.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/*
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* arch/arm64/include/asm/kprobes.h
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*
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* Copyright (C) 2013 Linaro Limited
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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 version 2 as
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* published by the Free Software Foundation.
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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 GNU
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* General Public License for more details.
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*/
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#ifndef _ARM_KPROBES_H
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#define _ARM_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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#define __ARCH_WANT_KPROBES_INSN_SLOT
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#define MAX_INSN_SIZE 1
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#define flush_insn_slot(p) do { } while (0)
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#define kretprobe_blacklist_size 0
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#include <asm/probes.h>
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struct prev_kprobe {
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struct kprobe *kp;
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unsigned int status;
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};
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/* Single step context for kprobe */
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struct kprobe_step_ctx {
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unsigned long ss_pending;
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unsigned long match_addr;
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};
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/* per-cpu kprobe control block */
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struct kprobe_ctlblk {
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unsigned int kprobe_status;
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unsigned long saved_irqflag;
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struct prev_kprobe prev_kprobe;
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struct kprobe_step_ctx ss_ctx;
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struct pt_regs jprobe_saved_regs;
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};
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void arch_remove_kprobe(struct kprobe *);
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int kprobe_fault_handler(struct pt_regs *regs, unsigned int fsr);
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int kprobe_exceptions_notify(struct notifier_block *self,
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unsigned long val, void *data);
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int kprobe_breakpoint_handler(struct pt_regs *regs, unsigned int esr);
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int kprobe_single_step_handler(struct pt_regs *regs, unsigned int esr);
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void kretprobe_trampoline(void);
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void __kprobes *trampoline_probe_handler(struct pt_regs *regs);
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#endif /* _ARM_KPROBES_H */
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