1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #ifndef __ASM_CSKY_JUMP_LABEL_H 4 #define __ASM_CSKY_JUMP_LABEL_H 5 6 #ifndef __ASSEMBLY__ 7 8 #include <linux/types.h> 9 10 #define JUMP_LABEL_NOP_SIZE 4 11 12 static __always_inline bool arch_static_branch(struct static_key *key, 13 bool branch) 14 { 15 asm_volatile_goto( 16 "1: nop32 \n" 17 " .pushsection __jump_table, \"aw\" \n" 18 " .align 2 \n" 19 " .long 1b - ., %l[label] - . \n" 20 " .long %0 - . \n" 21 " .popsection \n" 22 : : "i"(&((char *)key)[branch]) : : label); 23 24 return false; 25 label: 26 return true; 27 } 28 29 static __always_inline bool arch_static_branch_jump(struct static_key *key, 30 bool branch) 31 { 32 asm_volatile_goto( 33 "1: bsr32 %l[label] \n" 34 " .pushsection __jump_table, \"aw\" \n" 35 " .align 2 \n" 36 " .long 1b - ., %l[label] - . \n" 37 " .long %0 - . \n" 38 " .popsection \n" 39 : : "i"(&((char *)key)[branch]) : : label); 40 41 return false; 42 label: 43 return true; 44 } 45 46 #endif /* __ASSEMBLY__ */ 47 #endif /* __ASM_CSKY_JUMP_LABEL_H */ 48