Symbol: r29
sys/arch/rs6000/rs6000/machdep.c
150
li %r29,0x30 /* put serial addr to r29*/
sys/arch/rs6000/rs6000/machdep.c
151
addis %r29,%r29,0xc000 /* r29 now holds serial addr*/
sys/arch/rs6000/rs6000/machdep.c
152
stb %r28,0(%r29) /* slam it to serial port*/