LXR linux/arch/parisc/include/asm/jump

   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 <asm/assembly.h>
   9
  10#define JUMP_LABEL_NOP_SIZE 4
  11
  12static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
  13{
  14        asm_volatile_goto("1:\n\t"
  15                 "nop\n\t"
  16                 ".pushsection __jump_table,  \"aw\"\n\t"
  17                 ".word 1b - ., %l[l_yes] - .\n\t"
  18                 __stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
  19                 ".popsection\n\t"
  20                 : :  "i" (&((char *)key)[branch]) :  : l_yes);
  21
  22        return false;
  23l_yes:
  24        return true;
  25}
  26
  27static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
  28{
  29        asm_volatile_goto("1:\n\t"
  30                 "b,n %l[l_yes]\n\t"
  31                 ".pushsection __jump_table,  \"aw\"\n\t"
  32                 ".word 1b - ., %l[l_yes] - .\n\t"
  33                 __stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
  34                 ".popsection\n\t"
  35                 : :  "i" (&((char *)key)[branch]) :  : l_yes);
  36
  37        return false;
  38l_yes:
  39        return true;
  40}
  41
  42#endif  /* __ASSEMBLY__ */
  43#endif
  44