_a6                65 mtcp/NOTES-x86_64/example.c   register long int _a6 asm ("r9") = __arg6;            \
_a6                67 mtcp/NOTES-x86_64/example.c #define ASM_ARGS_6      ASM_ARGS_5, "r" (_a6)
_a6               310 mtcp/sysdep/sysdep-x86_64.h   register long int _a6 asm ("r9") = __arg6;		\
_a6               312 mtcp/sysdep/sysdep-x86_64.h #define ASM_ARGS_6	ASM_ARGS_5, "r" (_a6)