1 #ifndef _ASM_X86_RMWcc 2 #define _ASM_X86_RMWcc 3 4 #if !defined(__GCC_ASM_FLAG_OUTPUTS__) && defined(CC_HAVE_ASM_GOTO) 5 6 /* Use asm goto */ 7 8 #define __GEN_RMWcc(fullop, var, cc, ...) \ 9 do { \ 10 asm_volatile_goto (fullop "; j" #cc " %l[cc_label]" \ 11 : : "m" (var), ## __VA_ARGS__ \ 12 : "memory" : cc_label); \ 13 return 0; \ 14 cc_label: \ 15 return 1; \ 16 } while (0) 17 18 #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ 19 __GEN_RMWcc(op " " arg0, var, cc) 20 21 #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ 22 __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val)) 23 24 #else /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */ 25 26 /* Use flags output or a set instruction */ 27 28 #define __GEN_RMWcc(fullop, var, cc, ...) \ 29 do { \ 30 bool c; \ 31 asm volatile (fullop ";" CC_SET(cc) \ 32 : "+m" (var), CC_OUT(cc) (c) \ 33 : __VA_ARGS__ : "memory"); \ 34 return c; \ 35 } while (0) 36 37 #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ 38 __GEN_RMWcc(op " " arg0, var, cc) 39 40 #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ 41 __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val)) 42 43 #endif /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */ 44 45 #endif /* _ASM_X86_RMWcc */ 46