#ifndef _ASM_X86_RMWcc #define _ASM_X86_RMWcc #if !defined(__GCC_ASM_FLAG_OUTPUTS__) && defined(CC_HAVE_ASM_GOTO) /* Use asm goto */ #define __GEN_RMWcc(fullop, var, cc, ...) \ do { \ asm_volatile_goto (fullop "; j" #cc " %l[cc_label]" \ : : "m" (var), ## __VA_ARGS__ \ : "memory" : cc_label); \ return 0; \ cc_label: \ return 1; \ } while (0) #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ __GEN_RMWcc(op " " arg0, var, cc) #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val)) #else /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */ /* Use flags output or a set instruction */ #define __GEN_RMWcc(fullop, var, cc, ...) \ do { \ bool c; \ asm volatile (fullop ";" CC_SET(cc) \ : "+m" (var), CC_OUT(cc) (c) \ : __VA_ARGS__ : "memory"); \ return c; \ } while (0) #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ __GEN_RMWcc(op " " arg0, var, cc) #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val)) #endif /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */ #endif /* _ASM_X86_RMWcc */ |