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 save %sp, -192, %sp 15 sethi %hi(p1275buf), %o1 16 or %o1, %lo(p1275buf), %o1 17 ldx [%o1 + 0x0008], %l2 ! prom_cif_handler 18 mov %g4, %l0 19 mov %g5, %l1 20 mov %g6, %l3 21 call %l2 22 mov %i0, %o0 ! prom_args 23 mov %l0, %g4 24 mov %l1, %g5 25 mov %l3, %g6 26 ret 27 restore 28 29 .globl prom_cif_callback 30prom_cif_callback: 31 sethi %hi(p1275buf), %o1 32 or %o1, %lo(p1275buf), %o1 33 save %sp, -192, %sp 34 TRAP_LOAD_THREAD_REG(%g6, %g1) 35 LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0) 36 ldx [%g6 + TI_TASK], %g4 37 call prom_world 38 mov 0, %o0 39 ldx [%i1 + 0x000], %l2 40 call %l2 41 mov %i0, %o0 42 mov %o0, %l1 43 call prom_world 44 mov 1, %o0 45 ret 46 restore %l1, 0, %o0 47 48