/* cif.S: PROM entry/exit assembler trampolines. | |
* | |
* Copyright (C) 1996, 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
* Copyright (C) 2005, 2006 David S. Miller <davem@davemloft.net> | |
*/ | |
#include <asm/pstate.h> | |
#include <asm/cpudata.h> | |
#include <asm/thread_info.h> | |
.text | |
.globl prom_cif_direct | |
prom_cif_direct: | |
sethi %hi(p1275buf), %o1 | |
or %o1, %lo(p1275buf), %o1 | |
ldx [%o1 + 0x0010], %o2 ! prom_cif_stack | |
save %o2, -192, %sp | |
ldx [%i1 + 0x0008], %l2 ! prom_cif_handler | |
mov %g4, %l0 | |
mov %g5, %l1 | |
mov %g6, %l3 | |
call %l2 | |
mov %i0, %o0 ! prom_args | |
mov %l0, %g4 | |
mov %l1, %g5 | |
mov %l3, %g6 | |
ret | |
restore | |
.globl prom_cif_callback | |
prom_cif_callback: | |
sethi %hi(p1275buf), %o1 | |
or %o1, %lo(p1275buf), %o1 | |
save %sp, -192, %sp | |
TRAP_LOAD_THREAD_REG(%g6, %g1) | |
LOAD_PER_CPU_BASE(%g5, %g6, %g4, %g3, %o0) | |
ldx [%g6 + TI_TASK], %g4 | |
call prom_world | |
mov 0, %o0 | |
ldx [%i1 + 0x000], %l2 | |
call %l2 | |
mov %i0, %o0 | |
mov %o0, %l1 | |
call prom_world | |
mov 1, %o0 | |
ret | |
restore %l1, 0, %o0 | |