^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef _ASM_POWERPC_KPROBES_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define _ASM_POWERPC_KPROBES_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <asm-generic/kprobes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #ifdef __KERNEL__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Kernel Probes (KProbes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Copyright (C) IBM Corporation, 2002, 2004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * 2002-Oct Created by Vamsi Krishna S <vamsi_krishna@in.ibm.com> Kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Probes initial implementation ( includes suggestions from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Rusty Russell).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * 2004-Nov Modified for PPC64 by Ananth N Mavinakayanahalli
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * <ananth@in.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/percpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/probes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/code-patching.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #ifdef CONFIG_KPROBES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define __ARCH_WANT_KPROBES_INSN_SLOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct pt_regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct kprobe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) typedef ppc_opcode_t kprobe_opcode_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) extern kprobe_opcode_t optinsn_slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /* Optinsn template address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) extern kprobe_opcode_t optprobe_template_entry[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) extern kprobe_opcode_t optprobe_template_op_address[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) extern kprobe_opcode_t optprobe_template_call_handler[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) extern kprobe_opcode_t optprobe_template_insn[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) extern kprobe_opcode_t optprobe_template_call_emulate[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) extern kprobe_opcode_t optprobe_template_ret[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) extern kprobe_opcode_t optprobe_template_end[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* Fixed instruction size for powerpc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define MAX_INSN_SIZE 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define MAX_OPTIMIZED_LENGTH sizeof(kprobe_opcode_t) /* 4 bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define MAX_OPTINSN_SIZE (optprobe_template_end - optprobe_template_entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define RELATIVEJUMP_SIZE sizeof(kprobe_opcode_t) /* 4 bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define flush_insn_slot(p) do { } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define kretprobe_blacklist_size 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void kretprobe_trampoline(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) extern void arch_remove_kprobe(struct kprobe *p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* Architecture specific copy of original instruction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct arch_specific_insn {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* copy of original instruction */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) kprobe_opcode_t *insn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * Set in kprobes code, initially to 0. If the instruction can be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * eumulated, this is set to 1, if not, to -1.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) int boostable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct prev_kprobe {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct kprobe *kp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) unsigned long status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) unsigned long saved_msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* per-cpu kprobe control block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct kprobe_ctlblk {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) unsigned long kprobe_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) unsigned long kprobe_saved_msr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct prev_kprobe prev_kprobe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct arch_optimized_insn {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) kprobe_opcode_t copied_insn[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* detour buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) kprobe_opcode_t *insn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) extern int kprobe_exceptions_notify(struct notifier_block *self,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) unsigned long val, void *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) extern int kprobe_handler(struct pt_regs *regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) extern int kprobe_post_handler(struct pt_regs *regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static inline int kprobe_handler(struct pt_regs *regs) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static inline int kprobe_post_handler(struct pt_regs *regs) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #endif /* CONFIG_KPROBES */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #endif /* __KERNEL__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #endif /* _ASM_POWERPC_KPROBES_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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