Defines starting with `x' in osfmk/i386

• X osfmk/i386/db_disasm.c:245
• XA osfmk/i386/db_disasm.c:246
• X_DB_MAX_DIFF osfmk/i386/db_gcc_aout.c:495
• XPR_TIMESTAMP osfmk/i386/xpr.h:66