1 #ifndef __ASM_SH_KPROBES_H 2 #define __ASM_SH_KPROBES_H 3 4 #ifdef CONFIG_KPROBES 5 6 #include <linux/types.h> 7 #include <linux/ptrace.h> 8 9 typedef u16 kprobe_opcode_t; 10 #define BREAKPOINT_INSTRUCTION 0xc3ff 11 12 #define MAX_INSN_SIZE 16 13 #define MAX_STACK_SIZE 64 14 #define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \ 15 (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \ 16 ? (MAX_STACK_SIZE) \ 17 : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) 18 19 #define regs_return_value(regs) ((regs)->regs[0]) 20 #define flush_insn_slot(p) do { } while (0) 21 #define kretprobe_blacklist_size 0 22 23 struct kprobe; 24 25 void arch_remove_kprobe(struct kprobe *); 26 void kretprobe_trampoline(void); 27 void jprobe_return_end(void); 28 29 /* Architecture specific copy of original instruction*/ 30 struct arch_specific_insn { 31 /* copy of the original instruction */ 32 kprobe_opcode_t insn[MAX_INSN_SIZE]; 33 }; 34 35 struct prev_kprobe { 36 struct kprobe *kp; 37 unsigned long status; 38 }; 39 40 /* per-cpu kprobe control block */ 41 struct kprobe_ctlblk { 42 unsigned long kprobe_status; 43 unsigned long jprobe_saved_r15; 44 struct pt_regs jprobe_saved_regs; 45 kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE]; 46 struct prev_kprobe prev_kprobe; 47 }; 48 49 extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); 50 extern int kprobe_exceptions_notify(struct notifier_block *self, 51 unsigned long val, void *data); 52 extern int kprobe_handle_illslot(unsigned long pc); 53 #else 54 55 #define kprobe_handle_illslot(pc) (-1) 56 57 #endif /* CONFIG_KPROBES */ 58 #endif /* __ASM_SH_KPROBES_H */ 59