tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_PARISC_JUMP_LABEL_H
3#define _ASM_PARISC_JUMP_LABEL_H
4
5#ifndef __ASSEMBLY__
6
7#include <linux/types.h>
8#include <linux/stringify.h>
9#include <asm/assembly.h>
10
11#define JUMP_LABEL_NOP_SIZE 4
12
13static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
14{
15 asm goto("1:\n\t"
16 "nop\n\t"
17 ".pushsection __jump_table, \"aw\"\n\t"
18 ".align %1\n\t"
19 ".word 1b - ., %l[l_yes] - .\n\t"
20 __stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
21 ".popsection\n\t"
22 : : "i" (&((char *)key)[branch]), "i" (sizeof(long))
23 : : l_yes);
24
25 return false;
26l_yes:
27 return true;
28}
29
30static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
31{
32 asm goto("1:\n\t"
33 "b,n %l[l_yes]\n\t"
34 ".pushsection __jump_table, \"aw\"\n\t"
35 ".align %1\n\t"
36 ".word 1b - ., %l[l_yes] - .\n\t"
37 __stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
38 ".popsection\n\t"
39 : : "i" (&((char *)key)[branch]), "i" (sizeof(long))
40 : : l_yes);
41
42 return false;
43l_yes:
44 return true;
45}
46
47#endif /* __ASSEMBLY__ */
48#endif