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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_RMWcc
#define _ASM_X86_RMWcc
#include <linux/args.h>
#define __CLOBBERS_MEM(clb...) "memory", ## clb
#ifndef __GCC_ASM_FLAG_OUTPUTS__
/* Use asm goto */
#define __GEN_RMWcc(fullop, _var, cc, clobbers, ...) \
({ \
bool c = false; \
asm goto (fullop "; j" #cc " %l[cc_label]" \
: : [var] "m" (_var), ## __VA_ARGS__ \
: clobbers : cc_label); \
if (0) { \
cc_label: c = true; \
} \
c; \
})
#else /* defined(__GCC_ASM_FLAG_OUTPUTS__) */
/* Use flags output or a set instruction */
#define __GEN_RMWcc(fullop, _var, cc, clobbers, ...) \
({ \
bool c; \
asm volatile (fullop CC_SET(cc) \
: [var] "+m" (_var), CC_OUT(cc) (c) \
: __VA_ARGS__ : clobbers); \
c; \
})
#endif /* defined(__GCC_ASM_FLAG_OUTPUTS__) */
#define GEN_UNARY_RMWcc_4(op, var, cc, arg0) \
__GEN_RMWcc(op " " arg0, var, cc, __CLOBBERS_MEM())
#define GEN_UNARY_RMWcc_3(op, var, cc) \
GEN_UNARY_RMWcc_4(op, var, cc, "%[var]")
#define GEN_UNARY_RMWcc(X...) CONCATENATE(GEN_UNARY_RMWcc_, COUNT_ARGS(X))(X)
#define GEN_BINARY_RMWcc_6(op, var, cc, vcon, _val, arg0) \
__GEN_RMWcc(op " %[val], " arg0, var, cc, \
__CLOBBERS_MEM(), [val] vcon (_val))
#define GEN_BINARY_RMWcc_5(op, var, cc, vcon, val) \
GEN_BINARY_RMWcc_6(op, var, cc, vcon, val, "%[var]")
#define GEN_BINARY_RMWcc(X...) CONCATENATE(GEN_BINARY_RMWcc_, COUNT_ARGS(X))(X)
#define GEN_UNARY_SUFFIXED_RMWcc(op, suffix, var, cc, clobbers...) \
__GEN_RMWcc(op " %[var]\n\t" suffix, var, cc, \
__CLOBBERS_MEM(clobbers))
#define GEN_BINARY_SUFFIXED_RMWcc(op, suffix, var, cc, vcon, _val, clobbers...)\
__GEN_RMWcc(op " %[val], %[var]\n\t" suffix, var, cc, \
__CLOBBERS_MEM(clobbers), [val] vcon (_val))
#endif /* _ASM_X86_RMWcc */