tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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_volatile_goto("1:\n\t"
16 "nop\n\t"
17 ".pushsection __jump_table, \"aw\"\n\t"
18 ".word 1b - ., %l[l_yes] - .\n\t"
19 __stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
20 ".popsection\n\t"
21 : : "i" (&((char *)key)[branch]) : : l_yes);
22
23 return false;
24l_yes:
25 return true;
26}
27
28static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
29{
30 asm_volatile_goto("1:\n\t"
31 "b,n %l[l_yes]\n\t"
32 ".pushsection __jump_table, \"aw\"\n\t"
33 ".word 1b - ., %l[l_yes] - .\n\t"
34 __stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
35 ".popsection\n\t"
36 : : "i" (&((char *)key)[branch]) : : l_yes);
37
38 return false;
39l_yes:
40 return true;
41}
42
43#endif /* __ASSEMBLY__ */
44#endif