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| 1 | +/* SPDX-License-Identifier: GPL-2.0-only */ |
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| 1 | 2 | /* |
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| 2 | 3 | * Copyright (C) 2013 Huawei Ltd. |
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| 3 | 4 | * Author: Jiang Liu <liuj97@gmail.com> |
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| 4 | 5 | * |
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| 5 | 6 | * Based on arch/arm/include/asm/jump_label.h |
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| 6 | | - * |
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| 7 | | - * This program is free software; you can redistribute it and/or modify |
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| 8 | | - * it under the terms of the GNU General Public License version 2 as |
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| 9 | | - * published by the Free Software Foundation. |
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| 10 | | - * |
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| 11 | | - * This program is distributed in the hope that it will be useful, |
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| 12 | | - * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | | - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | | - * GNU General Public License for more details. |
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| 15 | | - * |
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| 16 | | - * You should have received a copy of the GNU General Public License |
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| 17 | | - * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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| 18 | 7 | */ |
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| 19 | 8 | #ifndef __ASM_JUMP_LABEL_H |
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| 20 | 9 | #define __ASM_JUMP_LABEL_H |
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| .. | .. |
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| 26 | 15 | |
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| 27 | 16 | #define JUMP_LABEL_NOP_SIZE AARCH64_INSN_SIZE |
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| 28 | 17 | |
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| 29 | | -static __always_inline bool arch_static_branch(struct static_key *key, bool branch) |
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| 18 | +static __always_inline bool arch_static_branch(struct static_key *key, |
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| 19 | + bool branch) |
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| 30 | 20 | { |
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| 31 | | - asm_volatile_goto("1: nop\n\t" |
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| 32 | | - ".pushsection __jump_table, \"aw\"\n\t" |
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| 33 | | - ".align 3\n\t" |
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| 34 | | - ".quad 1b, %l[l_yes], %c0\n\t" |
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| 35 | | - ".popsection\n\t" |
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| 21 | + asm_volatile_goto( |
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| 22 | + "1: nop \n\t" |
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| 23 | + " .pushsection __jump_table, \"aw\" \n\t" |
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| 24 | + " .align 3 \n\t" |
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| 25 | + " .long 1b - ., %l[l_yes] - . \n\t" |
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| 26 | + " .quad %c0 - . \n\t" |
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| 27 | + " .popsection \n\t" |
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| 36 | 28 | : : "i"(&((char *)key)[branch]) : : l_yes); |
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| 37 | 29 | |
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| 38 | 30 | return false; |
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| .. | .. |
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| 40 | 32 | return true; |
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| 41 | 33 | } |
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| 42 | 34 | |
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| 43 | | -static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch) |
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| 35 | +static __always_inline bool arch_static_branch_jump(struct static_key *key, |
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| 36 | + bool branch) |
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| 44 | 37 | { |
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| 45 | | - asm_volatile_goto("1: b %l[l_yes]\n\t" |
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| 46 | | - ".pushsection __jump_table, \"aw\"\n\t" |
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| 47 | | - ".align 3\n\t" |
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| 48 | | - ".quad 1b, %l[l_yes], %c0\n\t" |
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| 49 | | - ".popsection\n\t" |
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| 38 | + asm_volatile_goto( |
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| 39 | + "1: b %l[l_yes] \n\t" |
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| 40 | + " .pushsection __jump_table, \"aw\" \n\t" |
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| 41 | + " .align 3 \n\t" |
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| 42 | + " .long 1b - ., %l[l_yes] - . \n\t" |
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| 43 | + " .quad %c0 - . \n\t" |
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| 44 | + " .popsection \n\t" |
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| 50 | 45 | : : "i"(&((char *)key)[branch]) : : l_yes); |
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| 51 | 46 | |
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| 52 | 47 | return false; |
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| 53 | 48 | l_yes: |
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| 54 | 49 | return true; |
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| 55 | 50 | } |
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| 56 | | - |
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| 57 | | -typedef u64 jump_label_t; |
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| 58 | | - |
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| 59 | | -struct jump_entry { |
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| 60 | | - jump_label_t code; |
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| 61 | | - jump_label_t target; |
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| 62 | | - jump_label_t key; |
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| 63 | | -}; |
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| 64 | 51 | |
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| 65 | 52 | #endif /* __ASSEMBLY__ */ |
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| 66 | 53 | #endif /* __ASM_JUMP_LABEL_H */ |
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