1 /* SPDX-License-Identifier: GPL-2.0 */
5 #define __CLOBBERS_MEM "memory"
6 #define __CLOBBERS_MEM_CC_CX "memory", "cc", "cx"
8 #if !defined(__GCC_ASM_FLAG_OUTPUTS__) && defined(CC_HAVE_ASM_GOTO)
12 #define __GEN_RMWcc(fullop, var, cc, clobbers, ...) \
14 asm_volatile_goto (fullop "; j" #cc " %l[cc_label]" \
15 : : [counter] "m" (var), ## __VA_ARGS__ \
16 : clobbers : cc_label); \
22 #define __BINARY_RMWcc_ARG " %1, "
25 #else /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */
27 /* Use flags output or a set instruction */
29 #define __GEN_RMWcc(fullop, var, cc, clobbers, ...) \
32 asm volatile (fullop ";" CC_SET(cc) \
33 : [counter] "+m" (var), CC_OUT(cc) (c) \
34 : __VA_ARGS__ : clobbers); \
38 #define __BINARY_RMWcc_ARG " %2, "
40 #endif /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */
42 #define GEN_UNARY_RMWcc(op, var, arg0, cc) \
43 __GEN_RMWcc(op " " arg0, var, cc, __CLOBBERS_MEM)
45 #define GEN_UNARY_SUFFIXED_RMWcc(op, suffix, var, arg0, cc) \
46 __GEN_RMWcc(op " " arg0 "\n\t" suffix, var, cc, \
49 #define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \
50 __GEN_RMWcc(op __BINARY_RMWcc_ARG arg0, var, cc, \
51 __CLOBBERS_MEM, vcon (val))
53 #define GEN_BINARY_SUFFIXED_RMWcc(op, suffix, var, vcon, val, arg0, cc) \
54 __GEN_RMWcc(op __BINARY_RMWcc_ARG arg0 "\n\t" suffix, var, cc, \
55 __CLOBBERS_MEM_CC_CX, vcon (val))
57 #endif /* _ASM_X86_RMWcc */