grub/grub-core/kern/mips/cache_flush.S
Vladimir 'phcoder' Serbinenko ed24c31201 Avoid flushing the same line multiple times on loongson.
* grub-core/kern/mips/cache.S [GRUB_MACHINE_MIPS_LOONGSON]:
	Step in 32 bytes and not 1 byte.
	* grub-core/kern/mips/cache_flush.S [GRUB_MACHINE_MIPS_LOONGSON]:
	Likewise.
2012-06-22 23:36:33 +02:00

40 lines
675 B
ArmAsm

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, $t2
1:
cache 1, 0($t0)
/* All four ways. */
#ifdef GRUB_MACHINE_MIPS_LOONGSON
cache 1, 1($t0)
cache 1, 2($t0)
cache 1, 3($t0)
addiu $t1, $t1, -0x20
bne $t1, $zero, 1b
addiu $t0, $t0, 0x20
#else
addiu $t1, $t1, -0x4
bne $t1, $zero, 1b
addiu $t0, $t0, 0x4
#endif
sync
move $t0, $t2
subu $t1, $t3, $t2
2:
cache 0, 0($t0)
#ifdef GRUB_MACHINE_MIPS_LOONGSON
addiu $t1, $t1, -0x20
bne $t1, $zero, 2b
addiu $t0, $t0, 0x20
#else
addiu $t1, $t1, -0x4
bne $t1, $zero, 2b
addiu $t0, $t0, 0x4
#endif
sync