| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 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 */ |