Variables starting with `r' in machdep/ppc

• r0 machdep/ppc/cswtch.s:90
• r1 machdep/ppc/mcount.s:47
• r11 machdep/ppc/cswtch.s:88
• r2 machdep/ppc/cswtch.s:103
• r4 machdep/ppc/mcount.s:48
• r6 machdep/ppc/movc.s:103
• r7 machdep/ppc/movc.s:103
• RB_DEBUG machdep/ppc/swapgeneric.m:97
• reboot_how machdep/ppc/machdep.c:53
• rootdevice machdep/ppc/swapgeneric.m:92
• round machdep/ppc/frame.h:149