setlos.p #0,gr8
bra __syscall_exit
+ .globl ret_from_kernel_thread
+ret_from_kernel_thread:
+ lddi.p @(gr28,#REG_GR(8)),gr20
+ call schedule_tail
+ or.p gr20,gr20,gr8
+ calll @(gr21,gr0)
+ bra sys_exit
+
###################################################################################################
#
# Return to user mode is not as complex as all this looks,