1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _TOOLS_LINUX_ASM_X86_RMWcc 3 #define _TOOLS_LINUX_ASM_X86_RMWcc 4 5 #ifdef CONFIG_CC_HAS_ASM_GOTO 6 7 #define __GEN_RMWcc(fullop, var, cc, ...) \ 8 do { \ 9 asm_volatile_goto (fullop "; j" cc " %l[cc_label]" \ 10 : : "m" (var), ## __VA_ARGS__ \ 11 : "memory" : cc_label); \ 12 return 0; \ 13 cc_label: \ 14 return 1; \ 15 } while (0) 16 17 #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ 18 __GEN_RMWcc(op " " arg0, var, cc) 19 20 #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ 21 __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val)) 22 23 #else /* !CONFIG_CC_HAS_ASM_GOTO */ 24 25 #define __GEN_RMWcc(fullop, var, cc, ...) \ 26 do { \ 27 char c; \ 28 asm volatile (fullop "; set" cc " %1" \ 29 : "+m" (var), "=qm" (c) \ 30 : __VA_ARGS__ : "memory"); \ 31 return c != 0; \ 32 } while (0) 33 34 #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ 35 __GEN_RMWcc(op " " arg0, var, cc) 36 37 #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ 38 __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val)) 39 40 #endif /* CONFIG_CC_HAS_ASM_GOTO */ 41 42 #endif /* _TOOLS_LINUX_ASM_X86_RMWcc */ 43