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118 lines
3.1 KiB
118 lines
3.1 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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#ifndef _ASM_KPROBES_H |
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#define _ASM_KPROBES_H |
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/* |
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* Kernel Probes (KProbes) |
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* |
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* Copyright (C) IBM Corporation, 2002, 2004 |
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* Copyright (C) Intel Corporation, 2005 |
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* |
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* 2005-Apr Rusty Lynch <[email protected]> and Anil S Keshavamurthy |
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* <[email protected]> adapted from i386 |
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*/ |
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#include <asm-generic/kprobes.h> |
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#include <asm/break.h> |
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#define BREAK_INST (long)(__IA64_BREAK_KPROBE << 6) |
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#ifdef CONFIG_KPROBES |
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#include <linux/types.h> |
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#include <linux/ptrace.h> |
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#include <linux/percpu.h> |
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#define __ARCH_WANT_KPROBES_INSN_SLOT |
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#define MAX_INSN_SIZE 2 /* last half is for kprobe-booster */ |
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#define NOP_M_INST (long)(1<<27) |
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#define BRL_INST(i1, i2) ((long)((0xcL << 37) | /* brl */ \ |
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(0x1L << 12) | /* many */ \ |
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(((i1) & 1) << 36) | ((i2) << 13))) /* imm */ |
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typedef union cmp_inst { |
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struct { |
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unsigned long long qp : 6; |
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unsigned long long p1 : 6; |
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unsigned long long c : 1; |
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unsigned long long r2 : 7; |
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unsigned long long r3 : 7; |
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unsigned long long p2 : 6; |
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unsigned long long ta : 1; |
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unsigned long long x2 : 2; |
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unsigned long long tb : 1; |
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unsigned long long opcode : 4; |
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unsigned long long reserved : 23; |
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}f; |
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unsigned long long l; |
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} cmp_inst_t; |
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struct kprobe; |
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typedef struct _bundle { |
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struct { |
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unsigned long long template : 5; |
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unsigned long long slot0 : 41; |
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unsigned long long slot1_p0 : 64-46; |
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} quad0; |
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struct { |
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unsigned long long slot1_p1 : 41 - (64-46); |
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unsigned long long slot2 : 41; |
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} quad1; |
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} __attribute__((__aligned__(16))) bundle_t; |
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struct prev_kprobe { |
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struct kprobe *kp; |
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unsigned long status; |
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}; |
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#define MAX_PARAM_RSE_SIZE (0x60+0x60/0x3f) |
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/* per-cpu kprobe control block */ |
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#define ARCH_PREV_KPROBE_SZ 2 |
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struct kprobe_ctlblk { |
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unsigned long kprobe_status; |
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unsigned long *bsp; |
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unsigned long cfm; |
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atomic_t prev_kprobe_index; |
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struct prev_kprobe prev_kprobe[ARCH_PREV_KPROBE_SZ]; |
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}; |
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#define kretprobe_blacklist_size 0 |
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#define SLOT0_OPCODE_SHIFT (37) |
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#define SLOT1_p1_OPCODE_SHIFT (37 - (64-46)) |
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#define SLOT2_OPCODE_SHIFT (37) |
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#define INDIRECT_CALL_OPCODE (1) |
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#define IP_RELATIVE_CALL_OPCODE (5) |
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#define IP_RELATIVE_BRANCH_OPCODE (4) |
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#define IP_RELATIVE_PREDICT_OPCODE (7) |
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#define LONG_BRANCH_OPCODE (0xC) |
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#define LONG_CALL_OPCODE (0xD) |
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#define flush_insn_slot(p) do { } while (0) |
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typedef struct kprobe_opcode { |
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bundle_t bundle; |
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} kprobe_opcode_t; |
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/* Architecture specific copy of original instruction*/ |
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struct arch_specific_insn { |
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/* copy of the instruction to be emulated */ |
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kprobe_opcode_t *insn; |
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#define INST_FLAG_FIX_RELATIVE_IP_ADDR 1 |
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#define INST_FLAG_FIX_BRANCH_REG 2 |
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#define INST_FLAG_BREAK_INST 4 |
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#define INST_FLAG_BOOSTABLE 8 |
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unsigned long inst_flag; |
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unsigned short target_br_reg; |
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unsigned short slot; |
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}; |
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extern int kprobe_fault_handler(struct pt_regs *regs, int trapnr); |
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extern int kprobe_exceptions_notify(struct notifier_block *self, |
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unsigned long val, void *data); |
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extern void invalidate_stacked_regs(void); |
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extern void flush_register_stack(void); |
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extern void arch_remove_kprobe(struct kprobe *p); |
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#endif /* CONFIG_KPROBES */ |
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#endif /* _ASM_KPROBES_H */
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