Release 4.11 arch/x86/include/asm/rmwcc.h

#ifndef _ASM_X86_RMWcc

#define _ASM_X86_RMWcc

#if !defined(__GCC_ASM_FLAG_OUTPUTS__) && defined(CC_HAVE_ASM_GOTO)

/* Use asm goto */


#define __GEN_RMWcc(fullop, var, cc, ...)				\
do {                                                                    \
        asm_volatile_goto (fullop "; j" #cc " %l[cc_label]"             \
                        : : "m" (var), ## __VA_ARGS__                   \
                        : "memory" : cc_label);                         \
        return 0;                                                       \
cc_label:                                                               \
        return 1;                                                       \
} while (0)


#define GEN_UNARY_RMWcc(op, var, arg0, cc) 				\
	__GEN_RMWcc(op " " arg0, var, cc)


#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc)			\
	__GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val))

#else /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */

/* Use flags output or a set instruction */


#define __GEN_RMWcc(fullop, var, cc, ...)				\
do {                                                                    \
        bool c;                                                         \
        asm volatile (fullop ";" CC_SET(cc)                             \
                        : "+m" (var), CC_OUT(cc) (c)                    \
                        : __VA_ARGS__ : "memory");                      \
        return c;                                                       \
} while (0)


#define GEN_UNARY_RMWcc(op, var, arg0, cc)				\
	__GEN_RMWcc(op " " arg0, var, cc)


#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc)			\
	__GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val))

#endif /* defined(__GCC_ASM_FLAG_OUTPUTS__) || !defined(CC_HAVE_ASM_GOTO) */

#endif /* _ASM_X86_RMWcc */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Peter Zijlstra
98
80.99%
1
25.00%
H. Peter Anvin
23
19.01%
3
75.00%
Total
121
100.00%
4
100.00%
Directory: arch/x86/include/asm

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