eb46ee98bc
Lack of them causes random instructions to be executed before the jump really happens. Signed-off-by: Vladimir Serbinenko <phcoder@google.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
70 lines
1.1 KiB
ArmAsm
70 lines
1.1 KiB
ArmAsm
|
|
#include <grub/symbol.h>
|
|
|
|
.set noreorder
|
|
.set nomacro
|
|
|
|
FUNCTION (grub_arch_sync_caches)
|
|
#include "cache_flush.S"
|
|
j $ra
|
|
nop
|
|
|
|
FUNCTION (grub_arch_sync_dma_caches)
|
|
move $t2, $a0
|
|
addu $t3, $a0, $a1
|
|
srl $t2, $t2, 5
|
|
sll $t2, $t2, 5
|
|
addu $t3, $t3, 0x1f
|
|
srl $t3, $t3, 5
|
|
sll $t3, $t3, 5
|
|
move $t0, $t2
|
|
subu $t1, $t3, $t2
|
|
1:
|
|
cache_op 1, 0($t0)
|
|
#ifdef GRUB_MACHINE_MIPS_LOONGSON
|
|
cache_op 1, 1($t0)
|
|
cache_op 1, 2($t0)
|
|
cache_op 1, 3($t0)
|
|
|
|
addiu $t1, $t1, -0x20
|
|
bne $t1, $zero, 1b
|
|
addiu $t0, $t0, 0x20
|
|
#else
|
|
addiu $t1, $t1, -4
|
|
bne $t1, $zero, 1b
|
|
addiu $t0, $t0, 0x4
|
|
#endif
|
|
sync_op
|
|
move $t0, $t2
|
|
subu $t1, $t3, $t2
|
|
2:
|
|
#ifdef GRUB_MACHINE_MIPS_LOONGSON
|
|
cache_op 0, 0($t0)
|
|
addiu $t1, $t1, -0x20
|
|
bne $t1, $zero, 2b
|
|
addiu $t0, $t0, 0x20
|
|
#else
|
|
cache_op 0, 0($t0)
|
|
addiu $t1, $t1, -4
|
|
bne $t1, $zero, 2b
|
|
addiu $t0, $t0, 0x4
|
|
#endif
|
|
sync_op
|
|
move $t0, $t2
|
|
subu $t1, $t3, $t2
|
|
2:
|
|
#ifdef GRUB_MACHINE_MIPS_LOONGSON
|
|
cache_op 23, 0($t0)
|
|
addiu $t1, $t1, -0x20
|
|
bne $t1, $zero, 2b
|
|
addiu $t0, $t0, 0x20
|
|
#else
|
|
cache_op 23, 0($t0)
|
|
addiu $t1, $t1, -0x4
|
|
bne $t1, $zero, 2b
|
|
addiu $t0, $t0, 0x4
|
|
#endif
|
|
sync_op
|
|
|
|
jr $ra
|
|
nop
|