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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_RMWcc
#define _ASM_X86_RMWcc
#define __CLOBBERS_MEM "memory"
#define __CLOBBERS_MEM_CC_CX "memory", "cc", "cx"
#if !defined(__GCC_ASM_FLAG_OUTPUTS__) && defined(CC_HAVE_ASM_GOTO)
/* Use asm goto */
#define __GEN_RMWcc(fullop, var, cc, clobbers, ...) \
do { \
asm_volatile_goto (fullop "; j" #cc " %l[cc_label]" \
: : [counter] "m" (var), ## __VA_ARGS__ \
: clobbers : cc_label); \
return 0; \
cc_label: \
return 1; \
} while (0)
#define __BINARY_RMWcc_ARG " %1, "
#else /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */
/* Use flags output or a set instruction */
#define __GEN_RMWcc(fullop, var, cc, clobbers, ...) \
do { \
bool c; \
asm volatile (fullop CC_SET(cc) \
: [counter] "+m" (var), CC_OUT(cc) (c) \
: __VA_ARGS__ : clobbers); \
return c; \
} while (0)
#define __BINARY_RMWcc_ARG " %2, "
#endif /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */
#define GEN_UNARY_RMWcc(op, var, arg0, cc) \
__GEN_RMWcc(op " " arg0, var, cc, __CLOBBERS_MEM)
#define GEN_UNARY_SUFFIXED_RMWcc(op, suffix, var, arg0, cc) \
__GEN_RMWcc(op " " arg0 "\n\t" suffix, var, cc, \
__CLOBBERS_MEM_CC_CX)
#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \
__GEN_RMWcc(op __BINARY_RMWcc_ARG arg0, var, cc, \
__CLOBBERS_MEM, vcon (val))
#define GEN_BINARY_SUFFIXED_RMWcc(op, suffix, var, vcon, val, arg0, cc) \
__GEN_RMWcc(op __BINARY_RMWcc_ARG arg0 "\n\t" suffix, var, cc, \
__CLOBBERS_MEM_CC_CX, vcon (val))
#endif /* _ASM_X86_RMWcc */
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