1/* cif.S: PROM entry/exit assembler trampolines. 2 * 3 * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 4 * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net> 5 */ 6 7#include <asm/pstate.h> 8#include <asm/cpudata.h> 9#include <asm/thread_info.h> 10 11 .text 12 .globl prom_cif_direct 13prom_cif_direct: 14 sethi %hi(p1275buf), %o1 15 or %o1, %lo(p1275buf), %o1 16 ldx [%o1 + 0x0010], %o2 ! prom_cif_stack 17 save %o2, -192, %sp 18 ldx [%i1 + 0x0008], %l2 ! prom_cif_handler 19 mov %g4, %l0 20 mov %g5, %l1 21 mov %g6, %l3 22 call %l2 23 mov %i0, %o0 ! prom_args 24 mov %l0, %g4 25 mov %l1, %g5 26 mov %l3, %g6 27 ret 28 restore 29 30 .globl prom_cif_callback 31prom_cif_callback: 32 sethi %hi(p1275buf), %o1 33 or %o1, %lo(p1275buf), %o1 34 save %sp, -192, %sp 35 TRAP_LOAD_THREAD_REG(%g6, %g1) 36 LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0) 37 ldx [%g6 + TI_TASK], %g4 38 call prom_world 39 mov 0, %o0 40 ldx [%i1 + 0x000], %l2 41 call %l2 42 mov %i0, %o0 43 mov %o0, %l1 44 call prom_world 45 mov 1, %o0 46 ret 47 restore %l1, 0, %o0 48