Defines starting with `b' in machdep/i386

• B_ARG0 machdep/i386/asm.h:41
• B_ARG1 machdep/i386/asm.h:42
• B_ARG2 machdep/i386/asm.h:43
• B_ARG3 machdep/i386/asm.h:44
• BIOSC32_SEL machdep/i386/seg.h:168
• BIOSD32_SEL machdep/i386/seg.h:175
• BIOSDATA_SEL machdep/i386/seg.h:98