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#ifdef USE_MS_ABI
/* Store registers and move four first input arguments from MS ABI to
* SYSV ABI. */
#define FUNC_ENTRY() \
pushq %rsi; \
pushq %rdi; \
movq %rdx, %rsi; \
movq %rcx, %rdi; \
movq %r8, %rdx; \
movq %r9, %rcx;
/* Restore registers. */
#define FUNC_EXIT() \
popq %rdi; \
popq %rsi;
#else
#define FUNC_ENTRY() /**/
#define FUNC_EXIT() /**/
#endif
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