1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_RMWcc 3 #define _ASM_X86_RMWcc 4 5 #include <linux/args.h> 6 7 #define __CLOBBERS_MEM(clb...) "memory", ## clb 8 9 #define __GEN_RMWcc(fullop, _var, cc, clobbers, ...) \ 10 ({ \ 11 bool c; \ 12 asm_inline volatile (fullop \ 13 : [var] "+m" (_var), "=@cc" #cc (c) \ 14 : __VA_ARGS__ : clobbers); \ 15 c; \ 16 }) 17 18 #define GEN_UNARY_RMWcc_4(op, var, cc, arg0) \ 19 __GEN_RMWcc(op " " arg0, var, cc, __CLOBBERS_MEM()) 20 21 #define GEN_UNARY_RMWcc_3(op, var, cc) \ 22 GEN_UNARY_RMWcc_4(op, var, cc, "%[var]") 23 24 #define GEN_UNARY_RMWcc(X...) CONCATENATE(GEN_UNARY_RMWcc_, COUNT_ARGS(X))(X) 25 26 #define GEN_BINARY_RMWcc_6(op, var, cc, vcon, _val, arg0) \ 27 __GEN_RMWcc(op " %[val], " arg0, var, cc, \ 28 __CLOBBERS_MEM(), [val] vcon (_val)) 29 30 #define GEN_BINARY_RMWcc_5(op, var, cc, vcon, val) \ 31 GEN_BINARY_RMWcc_6(op, var, cc, vcon, val, "%[var]") 32 33 #define GEN_BINARY_RMWcc(X...) CONCATENATE(GEN_BINARY_RMWcc_, COUNT_ARGS(X))(X) 34 35 #define GEN_UNARY_SUFFIXED_RMWcc(op, suffix, var, cc, clobbers...) \ 36 __GEN_RMWcc(op " %[var]\n\t" suffix, var, cc, \ 37 __CLOBBERS_MEM(clobbers)) 38 39 #define GEN_BINARY_SUFFIXED_RMWcc(op, suffix, var, cc, vcon, _val, clobbers...)\ 40 __GEN_RMWcc(op " %[val], %[var]\n\t" suffix, var, cc, \ 41 __CLOBBERS_MEM(clobbers), [val] vcon (_val)) 42 43 #endif /* _ASM_X86_RMWcc */ 44