1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _TOOLS_LINUX_ASM_X86_RMWcc 3*4882a593Smuzhiyun #define _TOOLS_LINUX_ASM_X86_RMWcc 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #ifdef CONFIG_CC_HAS_ASM_GOTO 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #define __GEN_RMWcc(fullop, var, cc, ...) \ 8*4882a593Smuzhiyun do { \ 9*4882a593Smuzhiyun asm_volatile_goto (fullop "; j" cc " %l[cc_label]" \ 10*4882a593Smuzhiyun : : "m" (var), ## __VA_ARGS__ \ 11*4882a593Smuzhiyun : "memory" : cc_label); \ 12*4882a593Smuzhiyun return 0; \ 13*4882a593Smuzhiyun cc_label: \ 14*4882a593Smuzhiyun return 1; \ 15*4882a593Smuzhiyun } while (0) 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ 18*4882a593Smuzhiyun __GEN_RMWcc(op " " arg0, var, cc) 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ 21*4882a593Smuzhiyun __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val)) 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #else /* !CONFIG_CC_HAS_ASM_GOTO */ 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #define __GEN_RMWcc(fullop, var, cc, ...) \ 26*4882a593Smuzhiyun do { \ 27*4882a593Smuzhiyun char c; \ 28*4882a593Smuzhiyun asm volatile (fullop "; set" cc " %1" \ 29*4882a593Smuzhiyun : "+m" (var), "=qm" (c) \ 30*4882a593Smuzhiyun : __VA_ARGS__ : "memory"); \ 31*4882a593Smuzhiyun return c != 0; \ 32*4882a593Smuzhiyun } while (0) 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun #define GEN_UNARY_RMWcc(op, var, arg0, cc) \ 35*4882a593Smuzhiyun __GEN_RMWcc(op " " arg0, var, cc) 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \ 38*4882a593Smuzhiyun __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val)) 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun #endif /* CONFIG_CC_HAS_ASM_GOTO */ 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #endif /* _TOOLS_LINUX_ASM_X86_RMWcc */ 43