cif.S
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/* 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:
save %sp, -192, %sp
sethi %hi(p1275buf), %o1
or %o1, %lo(p1275buf), %o1
ldx [%o1 + 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