#ifndef _TOOLS_LINUX_ASM_X86_RMWcc #define _TOOLS_LINUX_ASM_X86_RMWcc #ifdef CC_HAVE_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 /* !CC_HAVE_ASM_GOTO */ #define __GEN_RMWcc(fullop, var, cc, ...) \ do { \ char c; \ asm volatile (fullop "; set" cc " %1" \ : "+m" (var), "=qm" (c) \ : __VA_ARGS__ : "memory"); \ return c != 0; \ } 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 /* CC_HAVE_ASM_GOTO */ #endif /* _TOOLS_LINUX_ASM_X86_RMWcc */ |