| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | #ifndef _ASM_UPROBES_H |
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| 3 | #define _ASM_UPROBES_H |
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| 4 | /* |
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| 5 | * User-space Probes (UProbes) for x86 |
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| 6 | * |
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| 7 | * Copyright (C) IBM Corporation, 2008-2011 |
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| 8 | * Authors: |
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| 9 | * Srikar Dronamraju |
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| 10 | * Jim Keniston |
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| 11 | */ |
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| 12 | |
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| 13 | #include <linux/notifier.h> |
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| 14 | |
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| 15 | typedef u8 uprobe_opcode_t; |
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| 16 | |
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| 17 | #define MAX_UINSN_BYTES 16 |
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| 18 | #define UPROBE_XOL_SLOT_BYTES 128 /* to keep it cache aligned */ |
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| 19 | |
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| 20 | #define UPROBE_SWBP_INSN 0xcc |
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| 21 | #define UPROBE_SWBP_INSN_SIZE 1 |
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| 22 | |
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| 23 | struct uprobe_xol_ops; |
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| 24 | |
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| 25 | struct arch_uprobe { |
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| 26 | union { |
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| 27 | u8 insn[MAX_UINSN_BYTES]; |
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| 28 | u8 ixol[MAX_UINSN_BYTES]; |
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| 29 | }; |
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| 30 | |
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| 31 | const struct uprobe_xol_ops *ops; |
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| 32 | |
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| 33 | union { |
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| 34 | struct { |
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| 35 | s32 offs; |
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| 36 | u8 ilen; |
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| 37 | u8 opc1; |
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| 38 | } branch; |
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| 39 | struct { |
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| 40 | u8 fixups; |
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| 41 | u8 ilen; |
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| 42 | } defparam; |
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| 43 | struct { |
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| 44 | u8 reg_offset; /* to the start of pt_regs */ |
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| 45 | u8 ilen; |
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| 46 | } push; |
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| 47 | }; |
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| 48 | }; |
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| 49 | |
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| 50 | struct arch_uprobe_task { |
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| 51 | #ifdef CONFIG_X86_64 |
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| 52 | unsigned long saved_scratch_register; |
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| 53 | #endif |
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| 54 | unsigned int saved_trap_nr; |
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| 55 | unsigned int saved_tf; |
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| 56 | }; |
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| 57 | |
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| 58 | #endif /* _ASM_UPROBES_H */ |
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| 59 | |
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