d39f545014
Initial support for kprobes/kretprobes for 32-bit SH platforms. [ General cleanup and some rework for the kretprobe hash lock. -- PFM ] Signed-off-by: Chris Smith <chris.smith@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#ifndef __ASM_SH_KPROBES_H
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#define __ASM_SH_KPROBES_H
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#ifdef CONFIG_KPROBES
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#include <linux/types.h>
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#include <linux/ptrace.h>
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struct pt_regs;
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typedef u16 kprobe_opcode_t;
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#define BREAKPOINT_INSTRUCTION 0xc3ff
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#define MAX_INSN_SIZE 16
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#define MAX_STACK_SIZE 64
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#define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \
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(((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \
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? (MAX_STACK_SIZE) \
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: (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR)))
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#define regs_return_value(regs) ((regs)->regs[0])
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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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struct kprobe;
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void arch_remove_kprobe(struct kprobe *);
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void kretprobe_trampoline(void);
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void jprobe_return_end(void);
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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[MAX_INSN_SIZE];
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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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};
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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 jprobe_saved_r15;
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struct pt_regs jprobe_saved_regs;
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kprobe_opcode_t jprobes_stack[MAX_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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extern int kprobe_handle_illslot(unsigned long pc);
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#else
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#define kprobe_handle_illslot(pc) (-1)
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#endif /* CONFIG_KPROBES */
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#endif /* __ASM_SH_KPROBES_H */
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