84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
#ifndef __ASM_E2K_KPROBES_H
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#define __ASM_E2K_KPROBES_H
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#include <asm-generic/kprobes.h>
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#ifdef CONFIG_KPROBES
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#include <linux/ptrace.h>
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#include <linux/types.h>
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#include <asm/kdebug.h>
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#include <asm/cpu_regs_types.h>
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#include <asm/trap_def.h>
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#include <asm/cacheflush.h>
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#define __ARCH_WANT_KPROBES_INSN_SLOT
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typedef u8 kprobe_opcode_t;
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#define KPROBE_BREAK_1 0x0dc0c04004000001UL
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/*
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* We need to store one additional instruction after the copied one
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* to make sure processor won't generate exc_illegal_opcode instead
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* of exc_last_wish/exc_instr_debug (exc_illegal_opcode has priority).
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*/
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#define MAX_INSN_SIZE (E2K_INSTR_MAX_SIZE + sizeof(unsigned long))
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struct arch_specific_insn {
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kprobe_opcode_t *insn;
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};
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/* per-cpu kprobe control block */
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#define MAX_STACK_SIZE 256
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struct kprobe_ctlblk {
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int kprobe_status;
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};
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#define kretprobe_blacklist_size 0
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#define arch_remove_kprobe(p) do { } while (0)
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#define flush_insn_slot(p) \
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do { \
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unsigned long slot = (unsigned long) p->ainsn.insn; \
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flush_icache_range(slot, slot + \
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MAX_INSN_SIZE * sizeof(kprobe_opcode_t)); \
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} while (0)
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extern int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr);
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extern int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
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unsigned long val, void *data);
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static inline int is_kprobe_break1_trap(struct pt_regs *regs)
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{
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u64 *instr = (u64 *)GET_IP_CR0_HI(regs->crs.cr0_hi);
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if (cpu_has(CPU_HWBUG_BREAKPOINT_INSTR))
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return (*instr & ~E2K_INSTR_HS_LNG_MASK) ==
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(KPROBE_BREAK_1 & ~E2K_INSTR_HS_LNG_MASK);
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else
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return *instr == KPROBE_BREAK_1;
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}
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extern void kprobe_instr_debug_handle(struct pt_regs *);
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#else
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static inline int is_kprobe_break1_trap(struct pt_regs *regs)
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{
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return false;
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}
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static inline void kprobe_instr_debug_handle(struct pt_regs *regs) { }
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#endif /* #ifdef CONFIG_KPROBES */
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#ifdef CONFIG_KRETPROBES
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extern int kretprobe_last_wish_handle(struct pt_regs *);
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#else
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static inline int kretprobe_last_wish_handle(struct pt_regs *regs)
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{
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return 0;
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}
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#endif
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#endif /*__ASM_E2K_KPROBES_H */
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