1 /* 2 * User-space Probes (UProbes) for s390 3 * 4 * Copyright IBM Corp. 2014 5 * Author(s): Jan Willeke, 6 */ 7 8 #ifndef _ASM_UPROBES_H 9 #define _ASM_UPROBES_H 10 11 #include <linux/notifier.h> 12 13 typedef u16 uprobe_opcode_t; 14 15 #define UPROBE_XOL_SLOT_BYTES 256 /* cache aligned */ 16 17 #define UPROBE_SWBP_INSN 0x0002 18 #define UPROBE_SWBP_INSN_SIZE 2 19 20 struct arch_uprobe { 21 union{ 22 uprobe_opcode_t insn[3]; 23 uprobe_opcode_t ixol[3]; 24 }; 25 unsigned int saved_per : 1; 26 unsigned int saved_int_code; 27 }; 28 29 struct arch_uprobe_task { 30 }; 31 32 int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm, 33 unsigned long addr); 34 int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs); 35 int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs); 36 bool arch_uprobe_xol_was_trapped(struct task_struct *tsk); 37 int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, 38 void *data); 39 void arch_uprobe_abort_xol(struct arch_uprobe *ap, struct pt_regs *regs); 40 unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline, 41 struct pt_regs *regs); 42 #endif /* _ASM_UPROBES_H */ 43