HelenOS sources

SKI_PUTCHAR        66 boot/arch/ia64/src/ski.c 	    : [cmd] "i" (SKI_PUTCHAR), [ch] "r" (ch)
SKI_PUTCHAR       191 kernel/arch/ia64/src/drivers/ski.c 	    : [cmd] "i" (SKI_PUTCHAR), [ch] "r" (ch)
SKI_PUTCHAR       253 uspace/drv/char/ski-con/ski-con.c 	    : "i" (SKI_PUTCHAR), "r" (ch)