45fec05f80
If we're just switching between different alternate global sets, nop it out on sun4v. Also, get rid of all of the alternate global save/restore in the OBP CIF trampoline code. Signed-off-by: David S. Miller <davem@davemloft.net>
49 lines
1000 B
ArmAsm
49 lines
1000 B
ArmAsm
/* 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_interface
|
|
prom_cif_interface:
|
|
sethi %hi(p1275buf), %o0
|
|
or %o0, %lo(p1275buf), %o0
|
|
ldx [%o0 + 0x010], %o1 ! prom_cif_stack
|
|
save %o1, -192, %sp
|
|
ldx [%i0 + 0x008], %l2 ! prom_cif_handler
|
|
mov %g4, %l0
|
|
mov %g5, %l1
|
|
mov %g6, %l3
|
|
call %l2
|
|
add %i0, 0x018, %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
|
|
|