50 lines
1,009 B
C
50 lines
1,009 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_ARM_JUMP_LABEL_H
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#define _ASM_ARM_JUMP_LABEL_H
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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#include <asm/unified.h>
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#define JUMP_LABEL_NOP_SIZE 4
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static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
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{
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asm_volatile_goto("1:\n\t"
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WASM(nop) "\n\t"
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".pushsection __jump_table, \"aw\"\n\t"
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".word 1b, %l[l_yes], %c0\n\t"
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".popsection\n\t"
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: : "i" (&((char *)key)[branch]) : : l_yes);
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return false;
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l_yes:
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return true;
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}
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static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
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{
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asm_volatile_goto("1:\n\t"
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WASM(b) " %l[l_yes]\n\t"
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".pushsection __jump_table, \"aw\"\n\t"
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".word 1b, %l[l_yes], %c0\n\t"
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".popsection\n\t"
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: : "i" (&((char *)key)[branch]) : : l_yes);
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return false;
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l_yes:
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return true;
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}
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typedef u32 jump_label_t;
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struct jump_entry {
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jump_label_t code;
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jump_label_t target;
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jump_label_t key;
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};
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#endif /* __ASSEMBLY__ */
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#endif
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