1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* cif.S: PROM entry/exit assembler trampolines. 3 * 4 * Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 5 * Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net> 6 */ 7 8 #include <asm/pstate.h> 9 #include <asm/cpudata.h> 10 #include <asm/thread_info.h> 11 12 .text 13 .globl prom_cif_direct 14 prom_cif_direct: 15 save %sp, -192, %sp 16 sethi %hi(p1275buf), %o1 17 or %o1, %lo(p1275buf), %o1 18 ldx [%o1 + 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 31 prom_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 49